Optical article, composition for forming underlayer, and set for surface treatment

Abstract

Provided is an optical article having a substrate, an underlayer, and a surface-treated layer arranged in this order, wherein: the underlayer is a layer formed using a composition for forming an underlayer, the composition including a silane compound other than silica; and the surface-treated layer is a layer formed using a surface treatment agent including a compound having a chain group and a reactive silyl group.

Description

Optical article, base layer forming composition, and surface treatment set

[0001] The present disclosure relates to an optical article, a composition for forming an undercoat layer, and a surface treatment set.

[0002] In recent years, there has been a demand for technologies that make surfaces of articles less susceptible to fingerprints and that make them easier to remove stains, in order to improve performance such as appearance and visibility. As a specific method, a method of performing a surface treatment on the surface of an article using a surface treatment agent is known.

[0003] For example, Patent Document 1 describes an article including a substrate and a layer formed on the substrate from a composition containing a silane compound containing a siloxane group.

[0004] International Publication No. 2023 / 017830

[0005] There is a demand for improved liquid repellency in the surface treatment layer formed by the surface treatment agent.

[0006] The present disclosure has been made in view of these circumstances, and a problem to be solved by one embodiment of the present invention is to provide an optical article having a surface treatment layer with excellent abrasion resistance. Another problem to be solved by one embodiment of the present invention is to provide a base layer-forming composition used to form a base layer in an optical article having a surface treatment layer with excellent abrasion resistance. Another problem to be solved by one embodiment of the present invention is to provide a surface treatment set including a base layer-forming composition used to form a base layer in an optical article having a surface treatment layer with excellent abrasion resistance, and a surface treatment agent used to form the surface treatment layer.

[0007] The present disclosure includes the following aspects. <1> An optical article comprising a substrate, an underlayer, and a surface treatment layer arranged in this order, wherein the underlayer is a layer formed using a composition for forming an underlayer containing a silane compound other than silica, and the surface treatment layer is a layer formed using a surface treatment agent containing a compound having a chain group and a reactive silyl group. <2> The optical article according to <1>, wherein the compound having a chain group and a reactive silyl group is a compound having a chain organo(poly)siloxane residue and a reactive silyl group. <3> The silane compound is a compound represented by the following formula (1A １ ) and a compound represented by the following formula (1A ２ The optical article according to <1> or <2>, comprising at least one compound A selected from the group consisting of compounds having a structure represented by SiX １ ４ …(1A １ ) -(SiH ２ NH) ｎ - ... (1A ２ ) Formula (1A １ ) Medium, X １ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group. ２ In the formula (2B), n is an integer that provides a number average molecular weight of the compound of 3,000 to 100,000. １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２ The optical article according to <3>, further comprising at least one compound selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D): ２０ Six ２ ３ …(2B １ ) X ３ ３ Si-(CH ２ ) ｍ -SiX ３ ３ …(2B ２ ) R ３０ Six ４２ R ３１ …(2C １ ) R ３２ X ５ ２ Si-(CH ２ ) ｍ -SiX ５ ２ R ３３ …(2C ２ ) -(SiR ４０ R ４１ -NR ４２ ) ｋ -...(2D) Formula (2B １ ), (2B ２ ), formula (2C １ ), formula (2C ２ ), and in formula (2D), R ２０ , R ３０ , R ３１ , R ３２ , R ３３ , R ４０ , and R ４１ are each independently an alkyl group; R ４２ are each independently a hydrogen atom or an alkyl group, ２ , X ３ , X ４ , and X ５ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group, and each m is independently an integer of 1 or more. In formula (2D), k is an integer that makes the number average molecular weight of the compound 3,000 to 100,000. <5> The silane compound is a compound A and a compound B represented by formula (2B １ ) and a compound represented by formula (2B ２<4> The optical article according to <4>, comprising at least one compound B selected from the group consisting of compounds represented by the formula (I), wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain to the number of silicon atoms in compound B is 1 or less. <6> The optical article according to <5>, wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain in compound B to the total number of silicon atoms in compound A and compound B is 0.005 to 0.1. <7> The optical article according to any one of <1> to <6>, wherein the substrate is glass. <8> The optical article according to any one of <1> to <7>, wherein the optical article is a display or a touch panel. <9> An underlayer-forming composition containing a silane compound other than silica, used to form the underlayer in an optical article having a substrate, an underlayer, and a surface-treated layer containing a compound having a chain group and a reactive silyl group, which are arranged in this order. <10> The composition for forming an undercoat layer according to <9>, wherein the compound having a chain group and a reactive silyl group is a compound having a chain organo(poly)siloxane residue and a reactive silyl group. <11> The silane compound is a compound represented by the following formula (1A １ ) and a compound represented by the following formula (1A ２ The composition for forming an undercoat layer according to <9> or <10>, comprising at least one compound A selected from the group consisting of compounds having a structure represented by SiX １ ４ …(1A １ ) -(SiH ２ NH) ｎ - ... (1A ２ ) Formula (1A １ ) Medium, X １ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group. ２ In the formula (2B), n is an integer that provides a number average molecular weight of the compound of 3,000 to 100,000. １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２The composition for forming an undercoat layer according to <11>, further comprising at least one compound selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D): ２０ Six ２ ３ …(2B １ ) X ３ ３ Si-(CH ２ ) ｍ -SiX ３ ３ …(2B ２ ) R ３０ Six ４ ２ R ３１ …(2C １ ) R ３２ X ５ ２ Si-(CH ２ ) ｍ -SiX ５ ２ R ３３ …(2C ２ ) -(SiR ４０ R ４１ -NR ４２ ) ｋ -...(2D) Formula (2B １ ), (2B ２ ), formula (2C １ ), formula (2C ２ ), and in formula (2D), R ２０ , R ３０ , R ３１ , R ３２ , R ３３ , R ４０ , and R ４１ are each independently an alkyl group; R ４２ are each independently a hydrogen atom or an alkyl group, ２ , X ３ , X ４ , and X ５ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group, and each m is independently an integer of 1 or more. In formula (2D), k is an integer such that the average molar mass of the compound is 3,000 to 100,000. <13> The silane compound is a compound A and a compound B represented by formula (2B１ ) and a compound represented by the following formula (2B ２ <14> The composition for forming a primer layer according to <13>, wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain of compound B to the total number of silicon atoms in compound A and compound B is 0.005 to 0.1. <15> A surface treatment set for an optical article having a base, a primer layer, and a surface treatment layer arranged in this order, the surface treatment set comprising a primer layer forming composition used to form the primer layer and a surface treatment agent used to form the surface treatment layer, the primer layer forming composition including a silane compound other than silica, and the surface treatment agent including a compound having a chain group and a reactive silyl group. <16> The surface treatment set according to <15>, wherein the compound having a chain group and a reactive silyl group is a compound having a chain organo(poly)siloxane residue and a reactive silyl group. <17> The silane compound is a compound represented by the following formula (1A １ ) and a compound represented by the following formula (1A ２ The surface treatment set according to <15> or <16>, comprising at least one compound A selected from the group consisting of compounds having a structure represented by SiX １ ４ …(1A １ ) -(SiH ２ NH) ｎ - ... (1A ２ ) Formula (1A １ ) Medium, X １ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group. ２ In the formula (2B), n is an integer that provides an average molar mass of the compound of 3,000 to 100,000. １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２The surface treatment set according to <17>, further comprising at least one compound selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D): ２０ Six ２ ３ …(2B １ ) X ３ ３ Si-(CH ２ ) ｍ -SiX ３ ３ …(2B ２ ) R ３０ Six ４ ２ R ３１ …(2C １ ) R ３２ X ５ ２ Si-(CH ２ ) ｍ -SiX ５ ２ R ３３ …(2C ２ ) -(SiR ４０ R ４１ -NR ４２ ) ｋ -...(2D) Formula (2B １ ), (2B ２ ), formula (2C １ ), formula (2C ２ ), and in formula (2D), R ２０ , R ３０ , R ３１ , R ３２ , R ３３ , R ４０ , and R ４１ are each independently an alkyl group; R ４２ are each independently a hydrogen atom or an alkyl group, ２ , X ３ , X ４ , and X ５ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group, and each m is independently an integer of 1 or more. In formula (2D), k is an integer such that the average molar mass of the compound is 3,000 to 100,000. <19> The silane compound is a compound A and a compound B represented by formula (2B１ ) and a compound represented by the following formula (2B ２ The set for surface treatment according to <18>, wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain of compound B to the total number of silicon atoms in compound A and compound B is 0.005 to 0.1.

[0008] According to one embodiment of the present invention, an optical article having a surface treatment layer with excellent abrasion resistance is provided. According to one embodiment of the present invention, a base layer forming composition used to form a base layer in an optical article having a surface treatment layer with excellent abrasion resistance is provided. According to one embodiment of the present invention, a surface treatment set is provided, the set including a base layer forming composition used to form a base layer in an optical article having a surface treatment layer with excellent abrasion resistance, and a surface treatment agent used to form the surface treatment layer.

[0009] In the present disclosure, when a numerical range is indicated using "to", the numerical values ​​before and after "to" are included as the minimum and maximum values, respectively. In the present disclosure, when a numerical range is indicated in a stepped manner, the upper or lower limit value of one numerical range may be replaced with the upper or lower limit value of another stepped numerical range. Furthermore, in the numerical ranges described herein, the upper or lower limit value of that numerical range may be replaced with a value shown in the Examples. In the present disclosure, the term "surface treatment layer" refers to a layer formed on the surface of a substrate by surface treatment. In the present disclosure, when a compound or group is represented by a specific formula (X), the compound or group represented by the formula (X) may be referred to as compound (X) or compound X, and group (X) or group X, respectively. In the present disclosure, the term "organo(poly)siloxane residue" refers to an organosiloxane residue or an organopolysiloxane residue. In the present disclosure, "Me" may refer to a methyl group and "Et" may refer to an ethyl group.

[0010] [Optical Article] The optical article of the present disclosure comprises a substrate, a primer layer, and a surface treatment layer arranged in this order, the primer layer being a layer formed using a primer layer-forming composition containing a silane compound other than silica, and the surface treatment layer being a layer formed using a surface treatment agent containing a compound having a chain group and a reactive silyl group. In one embodiment, the optical article of the present disclosure comprises a substrate, a primer layer, and a surface treatment layer arranged in this order, the primer layer being a layer formed using a primer layer-forming composition containing a silane compound other than silica, and the surface treatment layer being a layer formed using a surface treatment agent containing a compound having a chain organo(poly)siloxane residue and a reactive silyl group. Hereinafter, the compound having a chain group and a reactive silyl group will also be referred to as a "specific silane compound", and among these, the compound having a chain organo(poly)siloxane residue and a reactive silyl group will also be referred to as a "specific silane compound A". In the present disclosure, the description of the specific silane compound also applies when the "specific silane compound" is read as the "specific silane compound A" unless there is a contradiction.

[0011] The optical article according to the present disclosure has a surface treatment layer with excellent abrasion resistance. The reason why such an effect is obtained is not clear, but is presumed as follows.

[0012] It is believed that the reactive silyl groups contained in the surface treatment layer react with the silane compound contained in the underlayer, improving the adhesion between the surface treatment layer and the underlayer, thereby resulting in excellent abrasion resistance.

[0013] On the other hand, Patent Document 1 does not disclose a composition for forming an undercoat layer that contains a silane compound other than silica.

[0014] Hereinafter, each configuration of the optical article of the present disclosure will be described in detail.

[0015] The optical article of the present disclosure has a substrate, an underlayer, and a surface treatment layer arranged in this order.

[0016] Preferred examples of the optical article include a wide variety of optical articles, including optical articles related to displays, etc. Examples of the optical article include displays such as cathode ray tubes (CRTs; for example, personal computer monitors), liquid crystal displays, plasma displays, organic EL displays, inorganic thin-film EL dot matrix displays, rear projection displays, vacuum fluorescent displays (VFDs), and field emission displays (FEDs), as well as protective plates for such displays, and displays whose surfaces have been treated with an anti-reflection film.

[0017] Examples of optical articles of the present disclosure include car navigation systems, mobile phones, smartphones, digital cameras, digital video cameras, PDAs, portable audio players, car audio, game consoles, eyeglass lenses, camera lenses, lens filters, sunglasses, medical equipment such as gastroscopes, copiers, PCs, displays (e.g., liquid crystal displays, organic EL displays, plasma displays, touch panel displays), touch panels, protective films, and anti-reflection films. Examples of optical articles of the present disclosure also include front protective plates, anti-reflection plates, polarizing plates, and anti-glare plates for displays such as PDPs and LCDs; disc surfaces of optical discs such as Blu-ray (registered trademark) discs, DVD discs, CD-Rs, and MO discs; optical fibers; and the display surfaces of watches. In particular, the optical article of the present disclosure is preferably a display or a touch panel.

[0018] <Substrate> The type of substrate is not particularly limited, and examples thereof include substrates that are required to be water-repellent. Examples of substrates include substrates that may be used by contacting other articles (e.g., stylus) or human fingers; substrates that may be held by human fingers during operation; and substrates that may be placed on other articles (e.g., a mounting table). Examples of substrate materials include metal, resin, glass, sapphire, ceramic, semiconductor, stone, fiber, nonwoven fabric, paper, wood, fur, natural leather, artificial leather, ceramics, and composite materials thereof. Glass may be chemically strengthened. For optical applications, the substrate material is preferably glass or transparent resin.

[0019] The substrate may be in the form of a plate or a film.

[0020] The substrate is preferably a substrate for a touch panel, a substrate for a display, or a lens for glasses, and is particularly preferably a substrate for a touch panel.The material of the substrate for a touch panel is preferably glass or a transparent resin.

[0021] For optical applications, the substrate is more preferably glass, which may be chemically strengthened.

[0022] The substrate may be a substrate whose one or both surfaces have been subjected to a surface treatment such as corona discharge treatment, plasma treatment, or plasma graft polymerization treatment. A surface-treated substrate has better adhesion to the underlayer and further improves the abrasion resistance of the surface-treated layer. Therefore, it is preferable to perform the surface treatment on the surface of the substrate that comes into contact with the underlayer.

[0023] <Underlayer> The underlayer is a layer formed using a composition for forming an underlayer that contains a silane compound other than silica.

[0024] The components contained in the composition for forming the undercoat layer will be described below.

[0025] (Silane Compound) The silane compound other than silica (hereinafter simply referred to as "silane compound") is not particularly limited as long as it is a compound other than silica and contains a silicon atom.

[0026] The silane compound may be an organic silane or an inorganic silane (except silica).

[0027] The silane compound may be a low molecular weight compound having a molecular weight of less than 1,000, or may be a high molecular weight compound having a number average molecular weight of 1,000 or more.

[0028] Among them, the silane compound is represented by the following formula (1A １ ) and a compound represented by the following formula (1A ２ It is preferable that the compound A contains at least one compound A selected from the group consisting of compounds containing a structure represented by the formula (I).

[0029] Six １ ４ …(1A １ ) -(SiH ２ NH) ｎ - ... (1A ２ )

[0030] Formula (1A １ ) Medium, X １ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group.

[0031] Formula (1A ２ In the formula (I), n is an integer that gives the compound a number average molecular weight of 3,000 to 100,000.

[0032] Because compound A is highly reactive, when compound A is contained in the composition for forming the undercoat layer, the adhesion between the substrate and the undercoat layer and the adhesion between the undercoat layer and the surface treatment layer are improved, resulting in improved abrasion resistance of the surface treatment layer.

[0033] Formula (1A １ ) Medium, X １ The number of carbon atoms in the alkoxy group represented by the formula (I) is preferably 1 to 4, and more preferably 1 to 2. Examples of the alkoxy group include a methoxy group and an ethoxy group.

[0034] Formula (1A １ ) Medium, X １ Examples of the halogen atom represented by the formula (I) include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom, with a chlorine atom being preferred.

[0035] Formula (1A １ From the viewpoint of the balance between the stability of the compound represented by X) and the ease of hydrolysis, １ is preferably an alkoxy group or an isocyanato group.

[0036] Formula (1A １ Examples of the compound represented by the formula (I) include tetramethoxysilane, tetraethoxysilane, tetraisocyanatosilane, tetrachlorosilane, and tetrabromosilane.

[0037] In the present disclosure, the number average molecular weight is a polystyrene-equivalent molecular weight measured by gel permeation chromatography (GPC) using tetrahydrofuran as an eluent, with a calibration curve prepared using polystyrene polymers of known molecular weights.

[0038] Formula (1A ２ The compound having a number average molecular weight of 3,000 to 100,000 is represented by the formula (1A ２ When the composition for forming an undercoat layer contains a compound having a structure represented by the formula (1A), the adhesion between the substrate and the undercoat layer and the adhesion between the undercoat layer and the surface treatment layer are improved, and as a result, the abrasion resistance of the surface treatment layer is improved. ２ This is thought to be because the silane compound produced from the compound containing the structure represented by the formula (I) has an excellent balance between the reaction sites and film-forming properties, and the reaction with the reactive silyl groups contained in the surface treatment layer proceeds, thereby improving the adhesion between the surface treatment layer and the underlayer.

[0039] The composition for forming an undercoat layer is a compound represented by the formula (1A １ When the compound represented by formula (1A) is contained, １ The compound represented by the formula (1A) may contain a hydrolyzate or a hydrolyzed condensate. １ The hydrolyzate of the compound represented by the formula (1A １ The compound represented by formula (1A) is a compound in which a part or all of the hydrolyzable groups of the compound represented by formula (1A) are hydrolyzed. １ The hydrolysis condensate of the compound represented by the formula (1A １ or a compound produced by condensation of hydrolyzates of a compound represented by formula (1A １) and another compound.

[0040] The composition for forming an undercoat layer is a compound represented by the formula (1A ２ When the composition for forming an undercoat layer contains a compound having a structure represented by formula (1A ２ The hydrolyzate and hydrolyzed condensate may be the same as those defined above.

[0041] Formula (1A １ ) and a compound represented by formula (1A ２ ) is easily hydrolyzed in the composition for forming an underlayer, and it is difficult to identify the molecular structure in the composition for forming an underlayer. Therefore, in the present disclosure, a composition for forming an underlayer containing compound A can also be said to be a "composition for forming an underlayer prepared using compound A."

[0042] When the composition for forming a base layer contains compound A, it is preferable that the surface treatment agent used for forming the surface treatment layer contains a compound in which the number of Si atoms contained in the chain group is smaller than the number of non-Si atoms constituting the main chain of the chain group. In particular, compound A is represented by the formula (1A １ ), the surface treatment agent preferably contains a compound in which the number of Si atoms contained in the chain group is smaller than the number of non-Si atoms constituting the main chain of the chain group. The main chain of the chain group means the relatively longest bonding chain in the compound. The non-Si atom means an atom other than a Si atom.

[0043] By combining the silane compound contained in the composition for forming the undercoat layer with the surface treatment agent used to form the surface treatment layer as described above, the abrasion resistance of the surface treatment layer is improved. Therefore, it is possible to reduce the amount of components other than compound A (e.g., compound B) added to the undercoat layer. The undercoat layer may contain only compound A.

[0044] The silane compound is represented by the following formula (2B １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C１ ), a compound represented by the following formula (2C ２ It is preferable that the compound further contains at least one selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D):

[0045] R ２０ Six ２ ３ …(2B １ ) X ３ ３ Si-(CH ２ ) ｍ -SiX ３ ３ …(2B ２ ) R ３０ Six ４ ２ R ３１ …(2C １ ) R ３２ X ５ ２ Si-(CH ２ ) ｍ -SiX ５ ２ R ３３ …(2C ２ ) -(SiR ４０ R ４１ -NR ４２ ) ｋ - ... (2D)

[0046] Formula (2B １ ), (2B ２ ), formula (2C １ ), and formula (2C ２ ) middle, R ２０ , R ３０ , R ３１ , R ３２ , R ３３ , R ４０ , and R ４１ are each independently an alkyl group; R ４２ are each independently a hydrogen atom or an alkyl group, ２ , X ３ , X ４ , and X ５are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group, and each m is independently an integer of 1 or greater. In formula (2D), k is an integer that provides a number average molecular weight of the compound of 3,000 to 100,000.

[0047] In addition to the compound A, the composition for forming an undercoat layer further contains a compound represented by the formula (2B １ a compound represented by formula (2B ２ a compound represented by formula (2C １ a compound represented by formula (2C ２ When the surface treatment layer contains at least one selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D), durability is improved. This is thought to be because bonding between the reactive silyl groups contained in the surface treatment layer and the reaction sites of the silane compound generated from compound A is further promoted, thereby improving adhesion between the surface treatment layer and the underlayer.

[0048] Formula (2B １ ), (2B ２ ), formula (2C １ ), formula (2C ２ ), and in formula (2D), R ２０ , R ３０ , R ３１ , R ３２ , R ３３ , R ４０ , R ４１ , and R ４２ The alkyl group represented by X may be a linear alkyl group, a branched alkyl group, or a cyclic alkyl group. The alkyl group is preferably a linear alkyl group. The number of carbon atoms in the alkyl group is preferably 1 to 4, and more preferably 1 to 2. ２ , X ３ , X ４ , and X ５ A preferred embodiment of the alkoxy group represented by X １ The preferred embodiments are the same as those of the alkoxy group represented by X. ２ , X ３ , X ４ , and X ５ A preferred embodiment of the halogen atom represented by X １The preferred embodiments are the same as those of the halogen atom represented by the formula (2B ２ In formula (2C), m is preferably 1 to 10, more preferably 1 to 6, and even more preferably 1 or 2. ２ In formula (2D), m is preferably 1 to 10, more preferably 1 to 6, and even more preferably 1 or 2. ４２ is preferably a hydrogen atom.

[0049] Formula (2B １ Examples of the compound represented by the formula (I) include methyltrimethoxysilane, methyltrichlorosilane, and methyltriethoxysilane.

[0050] Formula (2B ２ Examples of the compound represented by the formula (2C) include bistriethoxysilylmethane, bistrimethoxysilylmethane, bistrichlorosilylmethane, bistrimethoxysilylethane, bistrichlorosilylethane, and bistriethoxysilylethane. １ Examples of the compound represented by formula (2C) include dimethyldimethoxysilane, dimethyldiethoxysilane, and dichlorodimethylsilane. ２ Examples of the compound represented by formula (2D) include bis(methyldichlorosilyl)methane, bis(methyldichlorosilyl)ethane, bis(methyldimethoxysilyl)methane, bis(methyldimethoxysilyl)ethane, bis(methyldiethoxysilyl)methane, and bis(methyldiethoxysilyl)ethane. Examples of the compound containing a structure represented by formula (2D) include DURAZANE 1033 manufactured by Merck and poly(1,1-dimethylsilazane) telomer manufactured by Gelest.

[0051] The compound having a structure represented by formula (2D) has a number average molecular weight of 3,000 to 100,000. Therefore, when the compound having a structure represented by formula (2D) is contained in the composition for forming an undercoat layer, the adhesion between the substrate and the undercoat layer and the adhesion between the undercoat layer and the surface treatment layer are improved, and as a result, the abrasion resistance of the surface treatment layer is improved.

[0052] The composition for forming an undercoat layer is a compound represented by the formula (2B １When the composition for forming an undercoat layer contains a compound represented by formula (2B １ Similarly, the composition for forming an undercoat layer may contain a hydrolyzate or hydrolysis condensate of a compound represented by the formula (2B ２ a compound represented by formula (2C １ a compound represented by formula (2C ２ ) and a hydrolyzate or hydrolysis condensate of a compound having a structure represented by formula (2D).

[0053] The following formula (2B １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２ ) and compounds containing a structure represented by the following formula (2D) are easily hydrolyzed in the composition for forming an underlayer, and it is difficult to identify the molecular structure in the composition for forming an underlayer. １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２ The composition for forming an undercoat layer containing a compound represented by the following formula (2B) and a compound having a structure represented by the following formula (2D) is １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２ The compound represented by formula (2D) may be used to form a base layer.

[0054] The composition for forming an undercoat layer is a compound represented by the formula (2B １ a compound represented by formula (2B ２ a compound represented by formula (2C １ a compound represented by formula (2C ２When the composition for forming a base layer contains at least one selected from the group consisting of a compound represented by formula (2A), and a compound having a structure represented by formula (2D), the surface treatment agent used to form the surface treatment layer preferably contains a compound in which the number of Si atoms contained in the chain group is greater than the number of non-Si atoms constituting the main chain of the chain group. In particular, when the composition for forming a base layer contains compound B, the surface treatment agent preferably contains a compound in which the number of Si atoms contained in the chain group is greater than the number of non-Si atoms constituting the main chain of the chain group.

[0055] By combining the silane compound contained in the composition for forming an undercoat layer with the surface treatment agent used to form the surface treatment layer as described above, the abrasion resistance of the surface treatment layer is improved.

[0056] The composition for forming an undercoat layer is a compound represented by the formula (2B １ a compound represented by formula (2B ２ a compound represented by formula (2C １ a compound represented by formula (2C ２ When the composition for forming an undercoat layer contains at least one compound selected from the group consisting of a compound represented by formula (1A) and a compound having a structure represented by formula (2D), the composition for forming an undercoat layer preferably also contains compound A. １ ) is preferred, and tetraethoxysilane is more preferred.

[0057] In order to further improve the abrasion resistance of the surface treatment layer, the silane compound may be selected from the group consisting of Compound A and a silane compound represented by the formula (2B １ ) and a compound represented by formula (2B ２ In the compound B, the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain to the number of silicon atoms is preferably 1 or less.

[0058] The combination of Compound A and Compound B further improves the adhesion between the surface treatment layer and the undercoat layer, resulting in even more excellent abrasion resistance.

[0059] In compound B, when the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain to the number of silicon atoms (hereinafter also referred to as "ratio A") is 1 or less, the adhesion between the surface treatment layer and the underlayer is further improved, resulting in even more excellent abrasion resistance.

[0060] The ratio A is preferably equal to or less than 5, more preferably equal to or less than 3, and even more preferably equal to or less than 2. The lower limit of the ratio A is not particularly limited, and is, for example, 0.1 or 0.3.

[0061] For example, methyltrimethoxysilane and methyltriethoxysilane have a ratio A of 1. Bistriethoxysilylethane has a ratio A of 1. Bistriethoxysilylmethane has a ratio A of 0.5.

[0062] When the silane compound contains compound A and compound B, the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain in the second compound to the total number of silicon atoms in compound A and compound B is preferably 0.005 to 0.1.

[0063] When the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain in compound B to the total number of silicon atoms in compound A and compound B (hereinafter also referred to as "ratio B") is 0.005 to 0.1, the adhesion between the surface treatment layer and the underlayer is further improved, resulting in even more excellent abrasion resistance.

[0064] Ratio B is preferably 0.005 to 0.1, and more preferably 0.01 to 0.1. In particular, when compound B is methyltrimethoxysilane, ratio B is preferably 0.01 to 0.05. When compound B is bistriethoxysilylmethane, ratio B is preferably 0.03 to 0.08. When compound B is bistriethoxysilylethane, ratio B is preferably 0.03 to 0.07.

[0065] The content of the silane compound is preferably 0.01 to 20% by mass, more preferably 0.1 to 10% by mass, based on the total amount of the composition for forming an undercoat layer.

[0066] The type and content of the silane compound contained in the undercoat layer-forming composition can be analyzed using thermal desorption spectroscopy (TDS), time-of-flight secondary ion mass spectroscopy (TOF-SIMS), X-ray photoelectron spectroscopy (XPS), nuclear magnetic resonance spectroscopy (NMR), or the like.

[0067] (Liquid Medium) The composition for forming an undercoat layer preferably contains a liquid medium in addition to the silane compound.

[0068] Examples of the liquid medium include the same liquid medium that may be contained in the surface treatment agent described below.

[0069] The content of the liquid medium is preferably 80 to 99.99 mass %, more preferably 90 to 99.9 mass %, based on the total amount of the undercoat layer-forming composition.

[0070] (Other Components) The composition for forming an undercoat layer may contain other components in addition to the silane compound, as long as the effects of the present disclosure are not impaired.

[0071] The underlayer-forming composition may contain a catalyst to promote condensation between hydrolyzates of the underlayer-forming composition. The catalyst may be any of an acid catalyst, an alkali catalyst, an amine catalyst, and a metal complex catalyst. Examples of acid catalysts include hydrochloric acid, nitric acid, acetic acid, sulfuric acid, phosphoric acid, sulfonic acid, methanesulfonic acid, and p-toluenesulfonic acid. Examples of alkali catalysts include sodium hydroxide, potassium hydroxide, and ammonia. Examples of amine catalysts include methylamine, dimethylamine, trimethylamine, and tetramethylhexanediamine. Examples of metal complex catalysts include acetylacetonate complexes of Ni, Pt, Pd, Al, and Rh. The underlayer-forming composition may also contain water necessary for hydrolysis by using an aqueous solution of these catalysts. The water content is preferably 1 to 50% by mass based on the total Si content of Compound A and Compound B. The catalyst content is preferably 0.01 to 5% by mass based on the total Si content of Compound A and Compound B.

[0072] (Method of Forming Underlayer) The underlayer is preferably formed on the substrate by a wet coating method using a composition for forming an underlayer.

[0073] Specific examples of wet coating methods for forming the underlayer include spin coating, wipe coating, spray coating, squeegee coating, dip coating, die coating, inkjet coating, flow coating, roll coating, casting, Langmuir-Blodgett coating, and gravure coating.

[0074] After wet-coating the undercoat layer-forming composition, it is preferable to dry the coating film. The drying temperature for the coating film is preferably 20 to 200°C, and more preferably 80 to 160°C.

[0075] <Surface Treatment Layer> The surface treatment layer may be formed on a portion of the surface of the base layer, or may be formed on the entire surface of the base layer. The surface treatment layer may spread in the form of a film on the surface of the base layer, or may be scattered in the form of dots. In the surface treatment layer, the compound having a chain group and a reactive silyl group is contained in a state in which hydrolysis of some or all of the reactive silyl groups has progressed, and a dehydration condensation reaction of the silanol groups has progressed.

[0076] The thickness of the surface treatment layer is preferably 1 to 100 nm, more preferably 1 to 50 nm. If the thickness of the surface treatment layer is 1 nm or more, the effect of the surface treatment is likely to be sufficient. If the thickness of the surface treatment layer is 100 nm or less, the utilization efficiency is high. The thickness of the surface treatment layer can be calculated from the oscillation period of the interference pattern obtained by X-ray reflectivity using a thin film analysis X-ray diffractometer (product name "ATX-G", manufactured by RIGAKU Corporation).

[0077] (Surface Treatment Agent) The surface treatment layer is a layer formed using a surface treatment agent containing a compound having a chain group and a reactive silyl group (specific silane compound).

[0078] Each component contained in the surface treatment agent will be described in detail below.

[0079] <Specific silane compound> The specific silane compound has a chain group and a reactive silyl group. The specific silane compound A has a chain organo(poly)siloxane residue and a reactive silyl group. The composition of the present disclosure may contain only one type of specific silane compound, or may contain two or more types.

[0080] (Chain Group) The specific silane compound contains a chain group. The chain group may be linear without a branch, or may contain a branch. As long as the specific silane compound contains a chain group, it may or may not have another structure, such as a cyclic structure.

[0081] The chain group is not particularly limited as long as it has a chain structure in which two or more atoms are linked, and may include a chain hydrocarbon group; a chain organo(poly)siloxane residue; —O—, —S—, —C(═O)NH—, —NHC(═O)—, —N(R ｄ )-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ -, and a group having at least one selected from the group consisting of a phenylene group; and combinations thereof. ｄ is a hydrogen atom or an alkyl group (preferably having 1 to 10 carbon atoms).

[0082] Examples of the chain hydrocarbon group include linear or branched chain hydrocarbon groups having 2 to 100 carbon atoms, preferably 5 to 90 carbon atoms, and more preferably 10 to 80 carbon atoms. As the chain hydrocarbon group, an alkylene group is preferred, and an alkylene group having the above carbon number is more preferred. From the viewpoint of forming a surface treatment layer that is excellent in acid resistance, hot water resistance, abrasion resistance, etc., the chain hydrocarbon group is preferably an alkylene group having 13 or more carbon atoms. At the terminal or between carbon atoms of the chain hydrocarbon group, -O-, -S-, -C(=O)NH-, -NHC(=O)-, -N(R ｄ )-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ The number of carbon atoms of the group having at least one selected from the group consisting of - and phenylene groups is the same as above.ｄ is a hydrogen atom or an alkyl group (preferably having 1 to 10 carbon atoms).

[0083] In one embodiment, the chain group is preferably a chain organo(poly)siloxane residue. The chain organo(poly)siloxane residue will be described in detail below.

[0084] (Linear Organo(Poly)siloxane Residue) The number of linear organo(poly)siloxane residues contained in the specific silane compound may be one or two or more. When the specific silane compound contains two or more linear organo(poly)siloxane residues, the two or more linear organo(poly)siloxane residues may be the same or different.

[0085] Examples of the linear organo(poly)siloxane residue include linear organo(poly)siloxane residues represented by the following formula (B1) or (B2).

[0086]

[0087]

[0088] In formula (B1), R ３ are each independently a hydrocarbon group, k1 is a number of 1 or more, and * is a bonding site to an adjacent atom.

[0089] In formula (B2), R ４ are each independently a hydrocarbon group or T １１ -B ｒ -(SiR ３ ２ -O) ｋ１ - and T １１ are each independently a monovalent group; B is each independently —O— or —C(═O)—; r is each independently 0 or 1; R ３ are each independently a hydrocarbon group; each k1 is independently a number of 1 or more; * is a bonding site to an adjacent atom.

[0090] In formulas (B1) and (B2), R ３Examples of the hydrocarbon group represented by the formula (I) include an aliphatic hydrocarbon group and an aromatic hydrocarbon group. Among these, the hydrocarbon group is preferably an aliphatic hydrocarbon group, and more preferably an alkyl group. The alkyl group may be any of a linear alkyl group, a branched alkyl group, and a cyclic alkyl group, but a linear alkyl group is preferred, and a methyl group, an ethyl group, an n-propyl group, or an n-butyl group is more preferred, and a methyl group is even more preferred. Furthermore, the aromatic hydrocarbon group is preferably a phenyl group.

[0091] In formulas (B1) and (B2), k1 is a number of 1 or more, preferably a number from 1 to 600, more preferably a number from 1 to 500, still more preferably a number from 3 to 500, particularly preferably a number from 9 to 50, extremely preferably a number from 11 to 30, and most preferably a number from 11 to 25.

[0092] In formula (B2), R ４ are each independently a hydrocarbon group or T １１ -B ｒ -(SiR ３ ２ -O) ｋ１ -, and a hydrocarbon group is preferred. Details of the hydrocarbon group are as follows: R ３ The hydrocarbon group is the same as the hydrocarbon group represented by the following formula:

[0093] T １１ are each independently a monovalent group, and specific embodiments thereof are as shown in T in formula (C) described later. １１ Specific embodiments of B and r are the same as those of B and r in formula (C) described below.

[0094] (Reactive Silyl Group) The number of reactive silyl groups contained in the specific silane compound is 1 or more, and from the viewpoint of further improving the abrasion resistance of the surface treatment layer, it is preferably 1 to 18, more preferably 1 to 12, even more preferably 1 to 8, particularly preferably 1 to 6, and extremely preferably 1 to 4. In one embodiment, the number of reactive silyl groups contained in the specific silane compound is preferably 2 to 18, more preferably 2 to 12, even more preferably 2 to 8, and particularly preferably 2 to 6. The number of reactive silyl groups may be 1.

[0095] The reactive silyl group means a group in which a reactive group is bonded to a Si atom. The reactive group is preferably a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group.

[0096] The hydrolyzable group is a group that becomes a hydroxyl group through a hydrolysis reaction. １ (L １ The hydrolyzable silyl groups represented by (wherein ) are hydrolyzable groups become silanol groups represented by Si—OH through a hydrolysis reaction. The silanol groups further react with each other to form Si—O—Si bonds. The silanol groups can also undergo a dehydration condensation reaction with silanol groups derived from oxides present on the surface of the substrate to form Si—O—Si bonds.

[0097] Examples of the hydrolyzable group include an alkoxy group, an aryloxy group, a halogen atom, an acyl group, an acyloxy group, an amino group, and —O—N═CR ｒ ２ and an isocyanato group (-NCO). The alkoxy group is preferably an alkoxy group having 1 to 4 carbon atoms. The aryloxy group is preferably an aryloxy group having 3 to 10 carbon atoms. However, the aryl group of the aryloxy group includes a heteroaryl group. The halogen atom is preferably a chlorine atom. The acyl group is preferably an acyl group having 1 to 6 carbon atoms. The acyloxy group is preferably an acyloxy group having 1 to 6 carbon atoms. R ｒ are each independently an alkyl group having 1 to 10 carbon atoms.

[0098] Examples of the group having a hydrolyzable group include the groups having a hydrolyzable group exemplified above. Ａ -L Ｂ is preferred. Ａ is an alkylene group, and L Ｂ is a hydrolyzable group. The alkylene group preferably has 1 to 10 carbon atoms. Ｂ The hydrolyzable group represented by the formula (I) has the same meaning as the hydrolyzable group described above, and the preferred embodiments are also the same.

[0099] The reactive silyl group is preferably a group represented by the following formula (S1): —Si(R ２ ) ｎ L ３－ｎ ...(S1)

[0100] In formula (S1), R ２ are each independently a monovalent hydrocarbon group; each L is independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; and n is an integer of 0 to 2.

[0101] When a molecule contains a plurality of reactive silyl groups, the plurality of reactive silyl groups may be the same or different from each other. From the viewpoints of availability of raw materials and ease of production of the compound, it is preferable that the plurality of reactive silyl groups are the same.

[0102] R ２ are each independently a monovalent hydrocarbon group, and preferably a monovalent saturated hydrocarbon group. ２ The number of carbon atoms is preferably 1 to 6, more preferably 1 to 3, and even more preferably 1 or 2.

[0103] Each L is independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group. Details of the hydrolyzable group and the group having a hydrolyzable group are as described above.

[0104] Among these, from the viewpoint of ease of production of the compound, L is preferably an alkoxy group having 1 to 4 carbon atoms or a halogen atom. L is preferably an alkoxy group having 1 to 4 carbon atoms, more preferably an ethoxy group or a methoxy group, from the viewpoint of less outgassing during coating and better storage stability of the compound.

[0105] n is an integer of 0 to 2, preferably 0 or 1, and more preferably 0. The presence of a plurality of Ls strengthens the adhesion of the surface treatment layer to the substrate.

[0106] When n is 1 or less, the plurality of L's present in one molecule may be the same or different from each other. From the viewpoint of availability of raw materials and ease of production of the compound, it is preferable that the plurality of L's are the same. When n is 2, the plurality of R's present in one molecule may be different from each other. ２may be the same or different from each other. From the viewpoint of availability of raw materials and ease of production of the compound, it is preferable to use a plurality of R ２ are preferably the same.

[0107] From the viewpoint of excellent uniformity and durability of the surface treatment layer, the reactive silyl group is preferably an alkoxysilyl group or a trichlorosilyl group. From the viewpoint of ease of handling of by-products generated in the reaction with the substrate, the reactive silyl group is more preferably an alkoxysilyl group. As the alkoxysilyl group, a dialkoxysilyl group or a trialkoxysilyl group is preferred, and a trialkoxysilyl group is more preferred.

[0108] The reactive silyl group may be a group represented by the following formula (S2): >SiL ２ ...(S2) L is the same as L in formula (S1).

[0109] The reactive silyl group is also preferably a group represented by the following formula (S3): -[Si(L ２ ) ２ -P] ｒ１ -Si(L ２ ) ３ ...(S3)

[0110] In formula (S3), L ２ are each independently a hydrolyzable group, a group having a hydrolyzable group, a hydroxyl group, or a hydrocarbon group; ２ At least four L ２ represents a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; each P is independently an oxygen atom or an organic group having one carbon atom bonded to adjacent Si atoms on both sides; and r1 is an integer of 1 to 3.

[0111] When a molecule contains a plurality of groups (S3), the groups (S3) may be the same or different from each other. From the viewpoint of availability of raw materials and ease of production of the compound, it is preferable that the groups (S3) are the same.

[0112] L ２are each independently a hydrolyzable group, a group having a hydrolyzable group, a hydroxyl group, or a hydrocarbon group. Details of the hydrolyzable group and the group having a hydrolyzable group are as described above. ２ From the viewpoint of ease of production of the compound, the hydrolyzable group or the group having a hydrolyzable group in L is preferably an alkoxy group having 1 to 4 carbon atoms, an alkylene oxide-modified alkoxy group, or a halogen atom. ２ From the viewpoints of reducing outgassing during application and improving the storage stability of the compound, L is preferably an alkoxy group having 1 to 4 carbon atoms, and more preferably an ethoxy group or a methoxy group. ２ Examples of the hydrocarbon group represented by the formula (I) include an alkyl group, a cycloalkyl group, an alkenyl group, and an allyl group. From the viewpoint of ease of synthesis, a saturated hydrocarbon group is preferred, and an alkyl group is more preferred. The number of carbon atoms in the hydrocarbon group is preferably 1 to 6, more preferably 1 to 3, and even more preferably 1 or 2.

[0113] r1 is an integer of 1 to 3, and from the viewpoint of ease of synthesis, 1 or 2 is preferred, and 1 is more preferred.

[0114] A plurality of Ls in one group (S3) ２ Among these, it is preferred that at least four of them are hydrolyzable groups, groups having a hydrolyzable group, or hydroxyl groups. This allows the group (S3) to bond more firmly to the substrate, resulting in a surface treatment layer with excellent durability. From this viewpoint, the number of hydrolyzable groups, groups having a hydrolyzable group, and hydroxyl groups in the group (S3) is preferably 4 to 9, more preferably 4 to 7, and even more preferably 4 or 5. In addition, when multiple Ls exist in one molecule, ２ may be the same or different from each other. For example, ２ may be the same hydrolyzable group.

[0115] Each P is independently an oxygen atom or an organic group having one carbon atom that bonds to adjacent Si on both sides. Here, "an organic group having one carbon atom that bonds to adjacent Si on both sides" means that Si is linked to itself via one carbon atom. Examples of P include hydrocarbon groups, such as -CH ２ -, -C(CH３ ) ２ From the viewpoint of durability of the surface treatment layer, P may be an oxygen atom, —CH ２ -, or -C(CH ３ ) ２ - is preferred, and an oxygen atom or -CH ２ - is more preferred, and an oxygen atom is even more preferred.

[0116] From the viewpoint of excellent durability of the surface treatment layer, the group (S3) is -[Si(OR １２ ) ２ -O] ｒ１ -Si(OR １２ ) ３ is preferred, and among these, -Si(OR １２ ) ２ —O—Si(OR １２ ) ３ is particularly preferred. １２ R are each independently a hydrocarbon group. Examples of the hydrocarbon group include an alkyl group, a cycloalkyl group, an alkenyl group, and an allyl group. From the viewpoint of ease of synthesis, a saturated hydrocarbon group is preferred, and an alkyl group is more preferred. １２ The number of carbon atoms is preferably 1 to 6, more preferably 1 to 3, and even more preferably 1 or 2.

[0117] Specific examples of the group (S3) include —Si(OCH ３ ) ２ —O—Si(OCH ３ ) ３ , -Si(OCH ３ ) ２ -CH ２ -Si(OCH ３ ) ３ , -Si(OCH ３ ) ２ -C(CH ３ ) ２ -Si(OCH ３ ) ３ , -Si(OCH ２ CH ３ ) ２ —O—Si(OCH ３ ) ３ , -Si(OCH ３ ) ２ —O—Si(OCH２ CH ３ ) ３ ,-Si(OCH ２ CH ３ ) ２ -O-Si(OCH ２ CH ３ ) ３ ,-Si(OCH ２ CH ３ ) ２ -CH ２ -Si(OCH ３ ) ３ ,-Si(OCH ３ ) ２ -CH ２ -Si(OCH ２ CH ３ ) ３ ,-Si(OCH ２ CH ３ ) ２ -CH ２ -Si(OCH ２ CH ３ ) ３ ,-Si(OCH ２ CH ３ ) ２ -C(CH) ３ ) ２ -Si(OCH ３ ) ３ ,-Si(OCH ３ ) ２ -C(CH) ３ ) ２ -Si(OCH ２ CH ３ ) ３ ,-Si(OCH ２ CH ３ ) ２ -C(CH) ３ ) ２ -Si(OCH ２ CH ３ ) ３ ,-Si(OH) ２ -O-Si(OH) ３ ,-Si(OH) ２ -O-Si(OCH ３ ) ３ ,-Si(OCH ３ ) ２ -O-Si(OH) ３ ,-Si(OH) ２ -CH２ -Si(OH) ３ , —Si(OH) ２ -CH ２ -Si(OCH ３ ) ３ , -Si(OCH ３ ) ２ -CH ２ -Si(OH) ３ , —Si(OH) ２ -C(CH ３ ) ２ -Si(OH) ３ , —Si(OH) ２ -C(CH ３ ) ２ -Si(OCH ３ ) ３ , -Si(OCH ３ ) ２ -C(CH ３ ) ２ -Si(OH) ３ , etc.

[0118] The number average molecular weight (Mn) of the specific silane compound is preferably 500 to 20,000, more preferably 600 to 18,000, and even more preferably 700 to 15,000. When Mn is 500 or more, the abrasion resistance of the surface treatment layer is superior. When Mn is 20,000 or less, the viscosity can be easily adjusted within an appropriate range and solubility is improved, resulting in excellent handling during film formation.

[0119] The surface treatment agent may contain impurities such as by-products generated in the manufacturing process of the specific silane compound.

[0120] The content of the specific silane compound is preferably 0.001 to 50% by mass, more preferably 0.01 to 20% by mass, and even more preferably 0.1 to 10% by mass, relative to the total amount of the surface treatment agent. In the case of a surface treatment agent used in a wet coating method, the content of the specific silane compound may be 0.01 to 10% by mass, 0.02 to 5% by mass, 0.03 to 3% by mass, or 0.05 to 2% by mass, relative to the total amount of the surface treatment agent.

[0121] Examples of the specific silane compound include a compound having a chain organo(poly)siloxane residue and a reactive silyl group linked to only one end of the chain organo(poly)siloxane residue (hereinafter also referred to as the "first compound"), and a compound having a chain organo(poly)siloxane residue and a reactive silyl group linked to both ends of the chain organo(poly)siloxane residue (hereinafter also referred to as the "second compound"). As the specific silane compound, the first compound may be used alone, the second compound may be used alone, or a combination of the first compound and the second compound may be used. In either case, the first compound may be used alone or in combination of two or more types, and the second compound may be used alone or in combination of two or more types.

[0122] [First Compound] The first compound has a linear organo(poly)siloxane residue and a reactive silyl group linked to only one end of the linear organo(poly)siloxane residue. In the present disclosure, the term "reactive silyl group linked to only one end of the linear organo(poly)siloxane residue" refers to a reactive silyl group linked to only one end of the linear organo(poly)siloxane residue, either directly or indirectly via another chemical structure.

[0123] (Linear Organo(Poly)siloxane Residue) The first compound contains a linear organo(poly)siloxane residue. The linear organo(poly)siloxane residue contained in the first compound may be one or two or more. When the first compound contains two or more linear organo(poly)siloxane residues, the two or more linear organo(poly)siloxane residues may be the same or different. When the first compound contains two or more linear organo(poly)siloxane residues, it is sufficient that there is no linear organo(poly)siloxane residue having reactive silyl groups linked to both terminals, and that at least one linear organo(poly)siloxane residue has a reactive silyl group linked to one terminal.

[0124] Details of the linear organo(poly)siloxane residue are as described above in the section on the linear organo(poly)siloxane residue contained in the specific silane compound. In particular, the linear organo(poly)siloxane residue is preferably represented by formula (B1) or (B2), and more preferably represented by formula (B1).

[0125] (Reactive Silyl Group) Details of the reactive silyl group are as described above in the section on the reactive silyl group contained in the specific silane compound. The number of reactive silyl groups contained in the first compound is one or more per one end of the linear organo(poly)siloxane residue, and from the viewpoint of further improving the abrasion resistance of the surface treatment layer, it is preferably 1 to 18, more preferably 1 to 12, even more preferably 1 to 8, particularly preferably 1 to 6, and extremely preferably 1 to 4 per one end of the linear organo(poly)siloxane residue. In one aspect, the number of reactive silyl groups contained in the first compound is preferably 2 to 18, more preferably 2 to 12, even more preferably 2 to 8, and particularly preferably 2 to 6 per one end of the linear organo(poly)siloxane residue. The number of reactive silyl groups may be one per one end of the linear organo(poly)siloxane residue.

[0126] (Compound (C)) In one embodiment, the first compound is preferably represented by the following formula (C).

[0127]

[0128] In formula (C), T １１ is a monovalent group that does not contain a reactive silyl group, each B is independently —O— or —C(═O)—, each r is independently 0 or 1, and R ３ are each independently a hydrocarbon group, k1 is each independently a number of 1 or more, p1 is an integer of 1 or more, and A １１ is a (p1+q1)-valent linking group, q1 is an integer of 1 or more, R ２ are each independently a hydrocarbon group; each L is independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; and each n is independently an integer of 0 to 2.

[0129] In formula (C), R ３ and k1 is R in formula (B1). ３ and k1. R ２ , L, and n are R in formula (S1). ２ , L, and n.

[0130] In formula (C), T １１ is a monovalent group. １１ Examples of the alkyl group include alkyl groups, T １ ３ M １ - (where M １ is Si, Sn, or Ge, and T １ are each independently a hydrocarbon group or a trialkylsilyloxy group; T １ ３ M １ -R １ - (where M １ is Si, Sn, or Ge, and T １ are each independently a hydrocarbon group or a trialkylsilyloxy group, and R １ represents an alkylene group), a monovalent cyclic polysiloxane residue or a monovalent cage-like polysiloxane residue, and a combination of a monovalent cyclic polysiloxane residue or a monovalent cage-like polysiloxane residue with a divalent hydrocarbon group.

[0131] T １１ The alkyl group represented by the formula (I) may be any of a linear alkyl group, a branched alkyl group, and a cyclic alkyl group, with a linear alkyl group or a branched alkyl group being preferred. The alkyl group may have 1 carbon atom or 2 or more carbon atoms. When the alkyl group has 2 or more carbon atoms, the number of carbon atoms is preferably 2 to 30, more preferably 3 to 28, and even more preferably 4 to 22.

[0132] T １ ３ M １ - and T １ ３ M １ -R １ M in - １ As the element, Si is preferred.

[0133] T １ ３ M １ - and T １ ３ M １ -R １ T in - １ As the group, an alkyl group or a trialkylsilyloxy group is preferable, and a methyl group, a butyldimethylsilyloxy group, a trimethylsilyloxy group, or a triethylsilyloxy group is more preferable.

[0134] R １ As the alkylene group, an alkylene group having 1 to 20 carbon atoms is preferable, an alkylene group having 1 to 10 carbon atoms is more preferable, an alkylene group having 1 to 5 carbon atoms is even more preferable, and an ethylene group is preferable.

[0135] In one embodiment, T １１ is preferably an alkyl group or a trialkylsilyl group, more preferably a methyl group or a trimethylsilyl group.

[0136] The monovalent cyclic polysiloxane residue is preferably a group represented by the following formula (T1): Ｔ are each independently a hydrocarbon group or a hydrocarbon group having a substituent, and s is an integer of 1 to 4.

[0137]

[0138] R Ｔ Examples of the hydrocarbon group represented by the formula (I) include an aliphatic hydrocarbon group and an aromatic hydrocarbon group. Among these, the hydrocarbon group is preferably an aliphatic hydrocarbon group, and more preferably an alkyl group.

[0139] R Ｔ Among the hydrocarbon groups represented by the formula (I), the alkyl group may be any of a linear alkyl group, a branched alkyl group, and a cyclic alkyl group, but a linear alkyl group is preferred. The number of carbon atoms in the alkyl group is preferably 1 to 10, more preferably 1 to 8, and even more preferably 1 to 4. Specifically, the alkyl group is preferably a methyl group, an ethyl group, an n-propyl group, or an n-butyl group, and more preferably a methyl group.

[0140] R Ｔ Examples of the hydrocarbon group contained in the hydrocarbon group having a substituent represented by the formula (I) include an aliphatic hydrocarbon group and an aromatic hydrocarbon group. Among these, the hydrocarbon group is preferably an aliphatic hydrocarbon group, and more preferably an alkyl group. The alkyl group may be any of a linear alkyl group, a branched alkyl group, and a cyclic alkyl group, but a linear alkyl group is preferred. The number of carbon atoms in the alkyl group contained in the substituted alkyl group is preferably 1 to 10, more preferably 1 to 8, and even more preferably 2 to 4.

[0141] R Ｔ Examples of the substituent in the hydrocarbon group having a substituent represented by the formula (I) include a halogen atom, a hydroxyl group, an alkoxy group, a trialkylsilyl ether group, a trialkylsilyl group, an amino group, a nitro group, a cyano group, a sulfonyl group, and a trifluoromethyl group.

[0142] Multiple R Ｔ may be the same or different from each other, but from the viewpoint of ease of production, it is preferable that they are the same.

[0143] Examples of the monovalent cyclic polysiloxane residue include the following groups.

[0144]

[0145] The monovalent cage-like polysiloxane residue is preferably a group represented by the following formula (T2): ５ are each independently a hydrocarbon group or a trialkylsilyloxy group.

[0146]

[0147] R ５Examples of the hydrocarbon group represented by the formula (I) include an aliphatic hydrocarbon group and an aromatic hydrocarbon group. Among these, the hydrocarbon group is preferably an aliphatic hydrocarbon group, and more preferably an alkyl group. The alkyl group may be any of a linear alkyl group, a branched alkyl group, and a cyclic alkyl group, but a linear alkyl group or a branched alkyl group is preferred, and a methyl group, an ethyl group, an n-propyl group, an n-butyl group, or an isobutyl group is more preferred, and an isobutyl group is even more preferred.

[0148] R ５ The alkyl group contained in the trialkylsilyloxy group represented by the formula (R) may be any of a linear alkyl group, a branched alkyl group, and a cyclic alkyl group, but is preferably a linear alkyl group, more preferably a methyl group, an ethyl group, an n-propyl group, or an n-butyl group, and even more preferably a methyl group. ５ is a trialkylsilyloxy group, the three alkylsilyloxy groups may be the same or different from one another, but from the viewpoint of ease of production, they are preferably the same.

[0149] Examples of the monovalent cage-like polysiloxane residue include the following groups.

[0150]

[0151] The divalent hydrocarbon group in the combination of the monovalent cyclic polysiloxane residue or the monovalent cage polysiloxane residue with the divalent hydrocarbon group is, for example, an alkylene group, preferably having 1 to 20 carbon atoms, more preferably 1 to 10 carbon atoms, and even more preferably 1 to 5 carbon atoms.

[0152] In formula (C), each B is independently —O— or —C(═O)—, and —O— is preferred.

[0153] In formula (C), p1 is an integer of 1 or more, preferably an integer of 1 to 3, more preferably 1 or 2, and even more preferably 1. When p1 is 2 or more, a plurality of T １１ -B ｒ -[Si(R ３ ) ２ -O] ｋ１ -Si(R３ ) ２ - may be the same or different from each other.

[0154] In formula (C), A １１ is a (p1+q1)-valent linking group. １１ Examples of the alkylene group include an alkylene group, an organo(poly)siloxane residue, a polyalkylene oxide group, and a combination thereof; and a combination thereof with a (p1+1)-valent group and / or a (q1+1)-valent group. Examples of the alkylene group include an etheric oxygen atom, a sulfur atom, -C(=O)NH-, -NHC(=O)-, -N(R ｄ )-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ Examples of the organo(poly)siloxane residue include a group represented by the formula (B1) above. Examples of the polyalkylene oxide group include a group represented by the formula (XO) ｍ Here, X is independently an alkylene group having 1 to 5 carbon atoms, and m is an integer of 1 or more. The number of carbon atoms in X is preferably 1 to 4, more preferably 2 or 3. m is preferably 1 to 200, more preferably 1 to 20, and even more preferably 1 to 10. A １１ As the compound represented by the formula A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ Examples of the A in the above formula include:

[0155] In formula (C), q1 is an integer of 1 or more, preferably 1 to 18, more preferably 1 to 12, even more preferably 1 to 8, particularly preferably 1 to 6, and extremely preferably 1 to 4. In one embodiment, q1 is preferably 2 to 18, more preferably 2 to 12, even more preferably 2 to 8, particularly preferably 2 to 6, and extremely preferably 2 to 4. q1 may be 1. When q1 is an integer of 2 or more, a plurality of [Si(R ２ ) ｎ L ３－ｎ ] may be the same or different from each other.

[0156] In one embodiment, T in formula (C) １１ is preferably a trialkylsilyl group or an alkyl group, more preferably a trimethylsilyl group or a methyl group. r is preferably 0. ３ is preferably a methyl group. k1 is preferably 1 to 100. p1 is preferably 1. A １１ represents an alkylene group having 1 to 30 carbon atoms, or a group selected from the group (3-1A) to Si(R ２ ) ｎ L ３－ｎ is preferably an alkylene group having 1 to 30 carbon atoms, or a group selected from the group (3-1A-4) to Si(R ２ ) ｎ L ３－ｎ It is more preferable that q1 is a group excluding the following:

[0157] When the composition for forming an undercoat layer contains compound A, the abrasion resistance of the surface treatment layer is improved by combining it with a compound represented by formula (C) as the specific silane compound contained in the surface treatment agent. １ When the specific silane compound contained in the surface treatment agent is a compound represented by formula (C) (preferably tetraethoxysilane), the abrasion resistance of the surface treatment layer is improved by combining the specific silane compound contained in the surface treatment agent with a compound represented by formula (C).

[0158] In formula (C), [T １１ -B ｒ -{Si(R ３ )２ O} ｋ１ -Si(R ３ ) ２ ]- (hereinafter referred to as "group H Ｃ The number of Si atoms contained in the １１ The number of atoms contained in the main chain of the group H is preferably smaller than that of the group H. Ｃ A relative to the number of Si atoms contained in １１ The ratio of the number of atoms contained in the main chain is preferably 1.2 or more, more preferably 2 or more, and even more preferably 5 or more. The upper limit of the ratio is 15, for example.

[0159] When the ratio is 1.2 or more, the abrasion resistance of the surface treatment layer is further improved.

[0160] A １１ The number of atoms contained in the main chain is preferably 11 to 60, more preferably 15 to 40, and even more preferably 15 to 30.

[0161] Group H Ｃ The number of Si atoms contained therein is preferably 1 to 100, more preferably 2 to 70, and even more preferably 2 to 30.

[0162] The composition for forming an undercoat layer is a compound represented by the formula (2B １ a compound represented by formula (2B ２ a compound represented by formula (2C １ a compound represented by formula (2C ２ When the composition for forming a base layer contains at least one selected from the group consisting of a compound represented by formula (2A), a compound represented by formula (2B), and a compound having a structure represented by formula (2D), the abrasion resistance of the surface treatment layer is improved by combining the compound represented by formula (C) as the specific silane compound contained in the surface treatment agent. In particular, when the composition for forming a base layer contains compound B, the abrasion resistance of the surface treatment layer is improved by combining the compound represented by formula (C) as the specific silane compound contained in the surface treatment agent.

[0163] By combining the silane compound contained in the composition for forming an undercoat layer with the surface treatment agent used to form the surface treatment layer as described above, the abrasion resistance of the surface treatment layer is improved.

[0164] In formula (C), group HＣ The number of Si atoms contained in A １１ It is preferable that the number of atoms contained in the main chain of the group H Ｃ A relative to the number of Si atoms contained in １１ The ratio of the number of atoms contained in the main chain of is preferably 0.9 or less, more preferably 0.6 or less, and even more preferably 0.3 or less. The lower limit of the ratio is, for example, more than 0.

[0165] When the ratio is 0.9 or less, the abrasion resistance of the surface treatment layer is further improved.

[0166] A １１ The number of atoms contained in the main chain is preferably 1 to 30, more preferably 1 to 15, and even more preferably 1 to 10.

[0167] Group H Ｃ The number of Si atoms contained therein is preferably 15 to 100, and more preferably 25 to 70.

[0168] (Compound (C2)) In a further embodiment, the first compound is preferably represented by the following formula (C2).

[0169]

[0170] In formula (C2), L ２ are each independently a hydrolyzable group, a group having a hydrolyzable group, a hydroxyl group, or a hydrocarbon group; ２ At least four L ２ represents a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; each P is independently an oxygen atom or an organic group having one carbon atom bonded to adjacent Si atoms on both sides; r1 is an integer of 1 to 3; T １１ , B, r, R ３ , k1, p1, A １１ The definitions of q and q1 are the same as those in formula (C).

[0171] In formula (C2), T １１ , B, r, R ３ , k1, p1, A １１ Specific embodiments of q1 and q2 are the same as those in formula (C). ２Specific embodiments of P and r1 are L in formula (S3). ２ , P and r1 are the same as specific embodiments thereof.

[0172] When the composition for forming an undercoat layer contains compound A, the abrasion resistance of the surface treatment layer is improved by combining it with a compound represented by formula (C2) as the specific silane compound contained in the surface treatment agent. １ When the specific silane compound contained in the surface treatment agent is a compound represented by formula (C1) (preferably tetraethoxysilane), the abrasion resistance of the surface treatment layer is improved by combining the specific silane compound contained in the surface treatment agent with a compound represented by formula (C2).

[0173] In formula (C2), group H Ｃ The number of Si atoms contained in A １１ The number of atoms contained in the main chain of the group H is preferably smaller than that of the group H. Ｃ A relative to the number of Si atoms contained in １１ The ratio of the number of atoms contained in the main chain is preferably 1.2 or more, more preferably 2 or more, and even more preferably 5 or more. The upper limit of the ratio is 15, for example.

[0174] When the ratio is 1.2 or more, the abrasion resistance of the surface treatment layer is further improved.

[0175] A １１ The number of atoms contained in the main chain is preferably 11 to 60, more preferably 15 to 40, and even more preferably 15 to 30.

[0176] Group H Ｃ The number of Si atoms contained therein is preferably 1 to 100, more preferably 2 to 70, and even more preferably 2 to 30.

[0177] The composition for forming an undercoat layer is a compound represented by the formula (2B １ a compound represented by formula (2B ２ a compound represented by formula (2C １ a compound represented by formula (2C ２When the composition for forming a base layer contains at least one selected from the group consisting of a compound represented by formula (2A), a compound represented by formula (2B), and a compound having a structure represented by formula (2D), the abrasion resistance of the surface treatment layer is improved by combining the compound represented by formula (C2) as the specific silane compound contained in the surface treatment agent. In particular, when the composition for forming a base layer contains compound B, the abrasion resistance of the surface treatment layer is improved by combining the compound represented by formula (C2) as the specific silane compound contained in the surface treatment agent.

[0178] By combining the silane compound contained in the composition for forming an undercoat layer with the surface treatment agent used to form the surface treatment layer as described above, the abrasion resistance of the surface treatment layer is improved.

[0179] In formula (C2), group H Ｃ The number of Si atoms contained in A １１ It is preferable that the number of atoms contained in the main chain of the group H Ｃ A relative to the number of Si atoms contained in １１ The ratio of the number of atoms contained in the main chain of is preferably 0.9 or less, more preferably 0.6 or less, and even more preferably 0.3 or less. The lower limit of the ratio is, for example, more than 0.

[0180] When the ratio is 0.9 or less, the abrasion resistance of the surface treatment layer is further improved.

[0181] A １１ The number of atoms contained in the main chain is preferably 1 to 30, more preferably 1 to 15, and even more preferably 1 to 10.

[0182] Group H Ｃ The number of Si atoms contained therein is preferably 15 to 100, and more preferably 25 to 70.

[0183] The number average molecular weight (Mn) of the first compound is preferably 500 to 20,000, more preferably 600 to 18,000, and even more preferably 700 to 15,000. In one embodiment, the Mn of the first compound may be 500 to 5,000 or 500 to 3,000. When Mn is 500 or more, the abrasion resistance of the surface treatment layer is superior. When Mn is 20,000 or less, the viscosity can be easily adjusted within an appropriate range, and solubility is improved, resulting in excellent handling during film formation.

[0184] The surface treatment agent may contain only one type of the first compound, or may contain two or more types of the first compound.

[0185] The surface treatment agent may contain impurities such as by-products produced in the manufacturing process of the first compound.

[0186] The content of the first compound is preferably 0.001 to 50 mass%, more preferably 0.01 to 20 mass%, and even more preferably 0.1 to 10 mass%, relative to the total amount of the surface treatment agent. In the case of a surface treatment agent used in a wet coating method, the content of the first compound may be 0.01 to 10 mass%, 0.02 to 5 mass%, 0.03 to 3 mass%, or 0.05 to 2 mass%, relative to the total amount of the surface treatment agent.

[0187] The content of the first compound is preferably 5% by mass or more and less than 65% by mass, more preferably 10 to 64% by mass, may be 20 to 60% by mass, or may be 30 to 50% by mass, based on the total solid content of the surface treatment agent.

[0188] [Second Compound] The second compound has a linear organo(poly)siloxane residue and reactive silyl groups linked to both ends of the linear organo(poly)siloxane residue. In the present disclosure, the term "reactive silyl groups linked to both ends of the linear organo(poly)siloxane residue" refers to reactive silyl groups linked to both ends of the linear organo(poly)siloxane residue directly or indirectly via other chemical structures.

[0189] (Linear organo(poly)siloxane residue) The second compound contains a linear organo(poly)siloxane residue. The linear organo(poly)siloxane residue contained in the second compound may be one or two or more. When the second compound contains two or more linear organo(poly)siloxane residues, the two or more linear organo(poly)siloxane residues may be the same or different. When the second compound contains two or more linear organo(poly)siloxane residues, it is sufficient that at least one linear organo(poly)siloxane residue has reactive silyl groups linked to both terminal sides.

[0190] Details of the linear organo(poly)siloxane residue are as described above in the section on the linear organo(poly)siloxane residue contained in the specific silane compound. In particular, the linear organo(poly)siloxane residue is preferably represented by formula (B1) or (B2), and more preferably represented by formula (B1).

[0191] (Reactive Silyl Group) Details of the reactive silyl group are as described above in the section on the reactive silyl group contained in the specific silane compound. The number of reactive silyl groups contained in the second compound is one or more per one end of the linear organo(poly)siloxane residue, and from the viewpoint of further improving the abrasion resistance of the surface treatment layer, it is preferably 1 to 18, more preferably 1 to 12, even more preferably 1 to 8, particularly preferably 1 to 6, and extremely preferably 1 to 4 per one end of the linear organo(poly)siloxane residue. In one embodiment, the number of reactive silyl groups contained in the second compound is preferably 2 to 18, more preferably 2 to 12, even more preferably 2 to 8, and particularly preferably 2 to 6 per one end of the linear organo(poly)siloxane residue. The number of reactive silyl groups may be one per one end of the linear organo(poly)siloxane residue.

[0192] (Compound (D)) In one embodiment, the second compound is preferably represented by the following formula (D).

[0193]

[0194] In formula (D), R ４are each independently a hydrocarbon group or T １１ -B ｒ -(SiR ３ ２ -O) ｋ１ - and T １１ are each independently a monovalent group; B is each independently —O— or —C(═O)—; r is each independently 0 or 1; R ３ are each independently a hydrocarbon group; k1 is each independently a number of 1 or more; A １２ are each independently a (q1+1)-valent linking group, each q1 is independently an integer of 1 or more, R ２ are each independently a hydrocarbon group; each L is independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; and each n is independently an integer of 0 to 2.

[0195] In formula (D), R ４ and k1 is R in formula (B2). ４ and k1. R ２ , L, and n are R in formula (S1). ２ , L, and n.

[0196] A １２ Examples of the alkylene group include an alkylene group, an organo(poly)siloxane residue, a polyalkylene oxide group, and a combination thereof; and a combination thereof with a (q1+1)-valent group. Examples of the alkylene group include an etheric oxygen atom, a sulfur atom, -C(=O)NH-, -NHC(=O)-, -N(R ｄ )-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２Examples of the organo(poly)siloxane residue include a group represented by the above formula (B1) or (B2). Examples of the polyalkylene oxide group include a group represented by the formula (XO): ｍ Here, X is independently an alkylene group having 1 to 5 carbon atoms, and m is an integer of 1 or more. The number of carbon atoms in X is preferably 1 to 4, more preferably 2 or 3. m is preferably 1 to 100, more preferably 1 to 10, and even more preferably 1 to 5. A １２ As the compound represented by the formula A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ In the above formula, A is a (q1+1)-valent group.

[0197] Each q1 is independently an integer of 1 or more, and each q1 is independently preferably 1 to 18, more preferably 1 to 12, even more preferably 1 to 8, particularly preferably 1 to 6, and extremely preferably 1 to 4. In one embodiment, q1 is preferably 2 to 18, more preferably 2 to 12, even more preferably 2 to 8, particularly preferably 2 to 6, and extremely preferably 2 to 4. q1 may be 1. When q1 is an integer of 2 or more, a plurality of [Si(R ２ ) ｎ L ３－ｎ ] may be the same or different from each other.

[0198] In one embodiment, R ４ is preferably a methyl group. k1 is preferably a number from 1 to 100. １２ represents an alkylene group having 1 to 30 carbon atoms, or a group selected from the group (3-1A) to Si(R ２ ) ｎ L ３－ｎ is preferably an alkylene group having 1 to 30 carbon atoms, or a group selected from the group (3-1A-4) to Si(R ２ ) ｎ L ３－ｎIt is more preferable that q1 is a group excluding the following:

[0199] (Compound (D2)) In a further embodiment, the second compound is preferably represented by the following formula (D2).

[0200]

[0201] In formula (D2), L ２ are each independently a hydrolyzable group, a group having a hydrolyzable group, a hydroxyl group, or a hydrocarbon group; ２ At least four L ２ is a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; each P is independently an oxygen atom or an organic group having one carbon atom bonded to adjacent Si atoms on both sides; each r1 is independently an integer of 1 to 3; ４ , k1, A １２ The definitions of q and q1 are the same as those in formula (D).

[0202] In formula (D2), R ４ , k1, A １２ Specific embodiments of q1 and q2 are the same as those in formula (D). ２ Specific embodiments of P and r1 are L in formula (S3). ２ , P and r1 are the same as specific embodiments thereof.

[0203] The number average molecular weight (Mn) of the second compound is preferably 500 to 20,000, more preferably 600 to 18,000, and even more preferably 700 to 15,000. In one embodiment, the Mn of the second compound may be 500 to 5,000, or may be 500 to 3,000.

[0204] If Mn is 500 or more, the abrasion resistance of the surface treatment layer is superior. If Mn is 20,000 or less, the viscosity can be easily adjusted within an appropriate range, and the solubility is improved, resulting in excellent handling properties during film formation.

[0205] The surface treatment agent may contain only one type of second compound, or may contain two or more types.

[0206] The surface treatment agent may contain impurities such as by-products produced in the production process of the second compound.

[0207] The content of the second compound is preferably 0.001 to 50 mass%, more preferably 0.01 to 20 mass%, and even more preferably 0.1 to 10 mass%, relative to the total amount of the surface treatment agent. In the case of a surface treatment agent used in a wet coating method, the content of the second compound may be 0.01 to 10 mass%, 0.02 to 5 mass%, 0.03 to 3 mass%, or 0.05 to 2 mass%, relative to the total amount of the surface treatment agent.

[0208] The content of the second compound is preferably more than 35 mass % and not more than 95 mass %, more preferably 36 to 90 mass %, may be 40 to 80 mass %, or may be 50 to 70 mass %, based on the total solid content of the surface treatment agent. The content of the second compound may be 35 to 95 mass %.

[0209] [Compound (E) or (E2)] In one embodiment, the specific silane compound may be a compound represented by formula (E).

[0210]

[0211] In formula (E), B １１ is a monovalent group containing at least one selected from the group consisting of Si, Ge, and Sn, to which a hydroxyl group or a hydrolyzable group is not directly bonded; or a monovalent group containing a branched alkyl group, u1 is an integer of 1 or more, A １３ is a (q1+u1)-valent linking group, q1 is an integer of 1 or more, R ２ are each independently a hydrocarbon group; each L is independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; and each n is independently an integer of 0 to 2.

[0212] In formula (E), R ２ , L, and n are R in formula (S1). ２ , L, and n are the same as q1 in formula (C).

[0213] B １１is a monovalent group containing at least one selected from the group consisting of Si, Ge, and Sn to which a hydroxyl group or a hydrolyzable group is not directly bonded; or a monovalent group containing a branched alkyl group. The monovalent group containing at least one selected from the group consisting of Si, Ge, and Sn to which a hydroxyl group or a hydrolyzable group is not directly bonded may or may not contain Si, Ge, or Sn to which a hydroxyl group or a hydrolyzable group is directly bonded.

[0214] In one embodiment, B １１ may be a group having group (a) or group (b).

[0215]

[0216]

[0217] In formula (a), R ５１ is -(R ６１ -SiR ５３ ２ ) ｍａ -R ５３ where R ６１ are each independently an oxygen atom or an alkylene group having 1 to 6 carbon atoms, and R ５３ are each independently a hydrocarbon group or R ５１’ and R ５１’ is R ５１ and ma is an integer of 1 to 5, provided that R ５１ Medium, R ５１’ The number of is 20 or less, and R ５２ is a hydrocarbon group, na is an integer of 1 to 3, z is 0 or 1, and * represents a bonding site with an adjacent atom.

[0218] In formula (b), R ５４ are each independently a hydrocarbon group, nb is an integer of 1 to 5, z is 0 or 1, and * represents a bonding site to an adjacent atom.

[0219] R ６１The alkylene group having 1 to 6 carbon atoms in the formula (I) may be a straight chain or a branched chain. The alkylene group having 1 to 6 carbon atoms is preferably an alkylene group having 1 to 4 carbon atoms, and more preferably an alkylene group having 2 to 4 carbon atoms.

[0220] R ５３ The hydrocarbon group represented by the formula (I) is preferably an alkyl group or an aryl group. The alkyl group may be linear or branched. The alkyl group is preferably an alkyl group having 1 to 6 carbon atoms, more preferably an alkyl group having 1 to 4 carbon atoms, and even more preferably a methyl group, an ethyl group, an n-propyl group, an isopropyl group, or a tert-butyl group.

[0221] R ５２ The hydrocarbon group represented by the formula (I) is preferably an alkyl group or an aryl group. The alkyl group may be linear or branched. The alkyl group is preferably an alkyl group having 1 to 6 carbon atoms, more preferably an alkyl group having 1 to 4 carbon atoms, and even more preferably a methyl group, an ethyl group, an n-propyl group, an isopropyl group, or a tert-butyl group.

[0222] R ５４ The hydrocarbon group represented by the formula (I) is preferably an alkyl group or an aryl group. The alkyl group may be linear or branched. The alkyl group is preferably an alkyl group having 1 to 6 carbon atoms, more preferably an alkyl group having 1 to 4 carbon atoms, and even more preferably a methyl group, an ethyl group, an n-propyl group, an isopropyl group, or a tert-butyl group.

[0223] nb is an integer of 1 to 5, preferably 2 or 3.

[0224] Examples of the group having the group (a) or the group (b) include the group (a) or the group (b) alone, and groups in which a chain group is linked to the group (a) or the group (b). Examples of the chain group include a chain hydrocarbon group; a chain organo(poly)siloxane residue; -O-, -S-, -C(=O)NH-, -NHC(=O)-, -N(R ｄ )-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２-, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ -, and a group having at least one selected from the group consisting of a phenylene group; and combinations thereof. ｄ is a hydrogen atom or an alkyl group (preferably having 1 to 10 carbon atoms).

[0225] Examples of the chain hydrocarbon group include linear or branched chain hydrocarbon groups having 2 to 100 carbon atoms, preferably 5 to 90 carbon atoms, and more preferably 10 to 80 carbon atoms. The chain hydrocarbon group is preferably an alkylene group, and from the viewpoint of forming a surface treatment layer excellent in acid resistance, hot water resistance, abrasion resistance, etc., the chain hydrocarbon group is preferably an alkylene group having 13 or more carbon atoms. The chain hydrocarbon group may have at its terminal or between carbon atoms -O-, -S-, -C(=O)NH-, -NHC(=O)-, -N(R ｄ )-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ The number of carbon atoms of the group having at least one selected from the group consisting of - and phenylene groups is the same as above. ｄ is a hydrogen atom or an alkyl group (preferably having 1 to 10 carbon atoms).

[0226] Examples of the chain organo(poly)siloxane residue include the examples of the chain organo(poly)siloxane residue in the specific silane compound described above.

[0227] In one embodiment, B １１ may be a group having group (c). ３１ (R ３１ ) ２ -...(c) In formula (c), M ３１ is Sn or Ge, R ３１ are each independently a hydrocarbon group or a trialkylsilyloxy group.

[0228] M ３１is Sn or Ge. Ge has a larger atomic size than Sn, and can further reduce the surface free energy, thereby forming a surface treatment layer with excellent fingerprint removal properties. ３１ is preferably Ge.

[0229] R ３１ R is a hydrocarbon group or a trialkylsilyloxy group. Examples of the hydrocarbon group include an alkyl group, a cycloalkyl group, an alkenyl group, and an allyl group. From the viewpoint of ease of synthesis, a saturated hydrocarbon group is preferred, and an alkyl group is more preferred. ３１ The number of carbon atoms in —CH is preferably 1 to 6, more preferably 1 to 3, and particularly preferably —CH ３ or -CH ２ CH ３ The trialkylsilyloxy group is preferably —O—SiR ４０ ３ Preferably, R ４０ are each independently a hydrocarbon group. ４０ The hydrocarbon group in R is preferably an alkyl group or an aryl group, and more preferably an alkyl group. ４０ The number of carbon atoms in R is preferably 1 to 6, more preferably 1 to 4, and even more preferably 1 or 2. ４０ Specific examples of the hydrocarbon group in ３ , -CH ２ CH ３ , -C(CH ３ ) ３ Examples include:

[0230] The group having the group (c) may be the group (c) alone or a group (c) M ３１ Examples of the organic group include a monovalent organic group, a divalent organic group, and a combination thereof. However, the monovalent organic group is not connected to both sides. Examples of the monovalent organic group include a hydrocarbon group, a trialkylsilyloxy group, and an organopolysiloxane group. The group (c) is M ３１ (R ３１ ) ３The divalent organic group may be a chain hydrocarbon group; a chain organo(poly)siloxane residue; -O-, -S-, -C(=O)NH-, -NHC(=O)-, -N(R ｄ )-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ -, and a group having at least one selected from the group consisting of a phenylene group; and combinations thereof. ｄ is a hydrogen atom or an alkyl group (preferably having 1 to 10 carbon atoms).

[0231] Examples of the chain hydrocarbon group include linear or branched chain hydrocarbon groups having 2 to 100 carbon atoms, preferably 5 to 90 carbon atoms, and more preferably 10 to 80 carbon atoms. Examples of the chain hydrocarbon group include alkyl groups and alkylene groups. From the viewpoint of forming a surface treatment layer that is excellent in acid resistance, hot water resistance, abrasion resistance, etc., the chain hydrocarbon group is preferably an alkylene group having 13 or more carbon atoms. The chain hydrocarbon group may have at its terminal or between carbon atoms -O-, -S-, -C(=O)NH-, -NHC(=O)-, -N(R ｄ )-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ The number of carbon atoms of the group having at least one selected from the group consisting of - and phenylene groups is the same as above. ｄ is a hydrogen atom or an alkyl group (preferably having 1 to 10 carbon atoms).

[0232] Examples of the chain organo(poly)siloxane residue include the examples of the chain organo(poly)siloxane residue in the specific silane compound described above.

[0233] In one embodiment, B １１may be a monovalent group containing a branched alkyl group. The branched alkyl group is preferably unsubstituted. The branched alkyl group is preferably a tert-butyl group or contains a tert-butyl group. The branched alkyl group may contain one branch or multiple branches. The number of branches in the branched alkyl group may be 1 to 30, 1 to 20, 1 to 10, or 1 to 5.

[0234] Examples of branched alkyl groups include groups represented by the following formula: [(CH ３ ) ３ C-R ２２ -] ｍ２２ C(CH ３ ) ３－ｍ２２ - In the formula, R ２２ are each independently an alkylene group having 1 to 6 carbon atoms; and m22 is an integer of 0 to 3.

[0235] Examples of the monovalent group containing a branched alkyl group include a group in which a chain group is linked to a carbon atom that is a branch point of the branched alkyl group. Examples of the chain group include a chain hydrocarbon group; a chain organo(poly)siloxane residue; -O-, -S-, -C(=O)NH-, -NHC(=O)-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, and -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ -, and a group having at least one selected from the group consisting of a phenylene group; and combinations thereof.

[0236] Examples of the chain hydrocarbon group include linear or branched chain hydrocarbon groups having 2 to 100 carbon atoms, preferably 5 to 90 carbon atoms, and more preferably 10 to 80 carbon atoms. The chain hydrocarbon group is preferably an alkylene group, and from the viewpoint of forming a surface treatment layer excellent in acid resistance, hot water resistance, abrasion resistance, etc., the chain hydrocarbon group is preferably an alkylene group having 13 or more carbon atoms. The chain hydrocarbon group may have at its terminal or between carbon atoms -O-, -S-, -C(=O)NH-, -NHC(=O)-, -N(R ｄ)-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ The number of carbon atoms of the group having at least one selected from the group consisting of - and phenylene groups is the same as above. ｄ is a hydrogen atom or an alkyl group (preferably having 1 to 10 carbon atoms).

[0237] Examples of the chain organo(poly)siloxane residue include the examples of the chain organo(poly)siloxane residue in the specific silane compound described above.

[0238] In formula (E), u1 is an integer of 1 or more. From the viewpoint of ease of production, u1 is preferably 1 to 6, and more preferably 1 to 4.

[0239] In formula (E), A １３ is a (q1+u1)-valent linking group. １３ As for A in formula (C), １１ Similar examples include:

[0240] Compound (E) includes B １１ is a group (a) or M ３１ (R ３１ ) ３ -, u1 is 1, and A １３ between carbon atoms is —O—, —S—, —C(═O)NH—, —NHC(═O)—, —N(R ｄ )-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ Compound (E) may be a compound in which q1 is 1 and the compound is an alkylene group having 1 to 30 carbon atoms, which may or may not have at least one selected from the group consisting of phenylene groups. １１ is a group (a) or M ３１(R ３１ ) ３ -, u1 is 1, and A １３ between carbon atoms is —O—, —S—, —C(═O)NH—, —NHC(═O)—, —N(R ｄ )-, -C(=O)O-, -OC(=O)-, -C(=O)S-, -SC(=O)-, -S(=O) ２ NH-, -NHS (=O) ２ -, -S(=O) ２ -, -S(=O) ２ O-, -OS (=O) ２ -, and a phenylene group, and may or may not have at least one selected from the group consisting of a chain hydrocarbon group having 1 to 30 carbon atoms, and q1 is 2 or 3. ｄ is a hydrogen atom or an alkyl group (preferably having 1 to 10 carbon atoms).

[0241] Specific examples of compound (E) include the following compounds: In the following formula, sa is preferably 1 to 30, more preferably 4 to 20, and even more preferably 5 to 15.

[0242]

[0243] When the composition for forming an undercoat layer contains compound A, the abrasion resistance of the surface treatment layer is improved by combining it with a compound represented by formula (E) as the specific silane compound contained in the surface treatment agent. １ When the specific silane compound contained in the surface treatment agent is a compound represented by formula (E) (preferably tetraethoxysilane), the abrasion resistance of the surface treatment layer is improved by combining the specific silane compound contained in the surface treatment agent with a compound represented by formula (E).

[0244] In formula (E), (B １１ ) ｕ１ The number of Si atoms contained in A １３ It is preferable that the number of atoms contained in the main chain of (B １１ ) ｕ１ A relative to the number of Si atoms contained in １３The ratio of the number of atoms contained in the main chain is preferably 1.2 or more, more preferably 2 or more, and even more preferably 5 or more. The upper limit of the ratio is 50, for example.

[0245] When the ratio is 1.2 or more, the abrasion resistance of the surface treatment layer is further improved.

[0246] A １３ The number of atoms contained in the main chain is preferably 11 to 60, more preferably 15 to 40, and even more preferably 15 to 30.

[0247] (B １１ ) ｕ１ The number of Si atoms contained in is preferably 1 to 100, more preferably 2 to 70, and even more preferably 2 to 30. (B １１ ) ｕ１ The number of Si atoms contained therein may be 0.

[0248] The composition for forming an undercoat layer is a compound represented by the formula (2B １ a compound represented by formula (2B ２ a compound represented by formula (2C １ a compound represented by formula (2C ２ When the composition for forming a base layer contains at least one selected from the group consisting of a compound represented by formula (2A), a compound represented by formula (2B), and a compound having a structure represented by formula (2C), the abrasion resistance of the surface treatment layer is improved by combining the compound represented by formula (C) as the specific silane compound contained in the surface treatment agent with the compound represented by formula (D). In particular, when the composition for forming a base layer contains compound B, the abrasion resistance of the surface treatment layer is improved by combining the compound represented by formula (D) as the specific silane compound contained in the surface treatment agent with the compound represented by formula (E).

[0249] By combining the silane compound contained in the composition for forming an undercoat layer with the surface treatment agent used to form the surface treatment layer as described above, the abrasion resistance of the surface treatment layer is improved.

[0250] In formula (E), (B １１ ) ｕ１ The number of Si atoms contained in A １３ It is preferable that the number of atoms contained in the main chain of (B １１ ) ｕ１ A relative to the number of Si atoms contained in１３ The ratio of the number of atoms contained in the main chain of is preferably 0.9 or less, more preferably 0.6 or less, and even more preferably 0.3 or less. The lower limit of the ratio is, for example, more than 0.

[0251] When the ratio is 0.9 or less, the abrasion resistance of the surface treatment layer is further improved.

[0252] A １３ The number of atoms contained in the main chain is preferably 1 to 30, more preferably 1 to 15, and even more preferably 1 to 10.

[0253] (B １１ ) ｕ１ The number of Si atoms contained therein is preferably 15 to 100, and more preferably 25 to 70.

[0254] In one embodiment, the specific silane compound may be a compound represented by formula (E2).

[0255] In formula (E2), L ２ are each independently a hydrolyzable group, a group having a hydrolyzable group, a hydroxyl group, or a hydrocarbon group; ２ At least four L ２ represents a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; each P independently represents an oxygen atom or an organic group having one carbon atom bonded to adjacent Si atoms on both sides; each r1 independently represents an integer of 1 to 3; １１ , u1, A １３ The definitions of q and q1 are the same as those in formula (E).

[0256] B １１ , u1, A １３ Specific embodiments of q1 and q2 are the same as those in formula (E). ２ , P, and r1 are the same as those in formula (S3).

[0257] When the composition for forming an undercoat layer contains compound A, the abrasion resistance of the surface treatment layer is improved by combining it with a compound represented by formula (E2) as the specific silane compound contained in the surface treatment agent. １When the specific silane compound contained in the surface treatment agent is a compound represented by formula (E1) (preferably tetraethoxysilane), the abrasion resistance of the surface treatment layer is improved by combining the specific silane compound contained in the surface treatment agent with a compound represented by formula (E2).

[0258] In formula (E2), A １３ The number of atoms contained in the main chain of (B １１ ) ｕ１ It is preferable that the number of Si atoms contained in B １１ ) ｕ１ A relative to the number of Si atoms contained in １３ The ratio of the number of atoms contained in the main chain is preferably 1.2 or more, more preferably 2 or more, and even more preferably 5 or more. The upper limit of the ratio is 50, for example.

[0259] When the ratio is 1.2 or more, the abrasion resistance of the surface treatment layer is further improved.

[0260] A １３ The number of atoms contained in the main chain is preferably 11 to 60, more preferably 15 to 40, and even more preferably 15 to 30.

[0261] (B １１ ) ｕ１ The number of Si atoms contained in is preferably 1 to 100, more preferably 2 to 70, and even more preferably 2 to 30. (B １１ ) ｕ１ The number of Si atoms contained therein may be 0.

[0262] The composition for forming an undercoat layer is a compound represented by the formula (2B １ a compound represented by formula (2B ２ a compound represented by formula (2C １ a compound represented by formula (2C ２ When the composition for forming a base layer contains at least one selected from the group consisting of a compound represented by formula (2A), a compound represented by formula (2B), and a compound having a structure represented by formula (2C), the abrasion resistance of the surface treatment layer is improved by combining the compound represented by formula (E2) as the specific silane compound contained in the surface treatment agent. In particular, when the composition for forming a base layer contains compound B, the abrasion resistance of the surface treatment layer is improved by combining the compound represented by formula (E2) as the specific silane compound contained in the surface treatment agent.

[0263] By combining the silane compound contained in the composition for forming an undercoat layer with the surface treatment agent used to form the surface treatment layer as described above, the abrasion resistance of the surface treatment layer is improved.

[0264] In formula (E2), (B １１ ) ｕ１ The number of Si atoms contained in A １３ It is preferable that the number of atoms contained in the main chain of (B １１ ) ｕ１ A relative to the number of Si atoms contained in １３ The ratio of the number of atoms contained in the main chain of is preferably 0.9 or less, more preferably 0.6 or less, and even more preferably 0.3 or less. The lower limit of the ratio is, for example, more than 0.

[0265] When the ratio is 0.9 or less, the abrasion resistance of the surface treatment layer is further improved.

[0266] A １３ The number of atoms contained in the main chain is preferably 1 to 30, more preferably 1 to 15, and even more preferably 15 to 10.

[0267] (B １１ ) ｕ１ The number of Si atoms contained therein is preferably 15 to 100, and more preferably 25 to 70.

[0268] [Partial Structures of the First Compound, the Second Compound, and the Compound (E)] １１ (Si(R ２ ) ｎ L ３－ｎ ) ｑ１ , A in formula (D) １２ (Si(R ２ ) ｎ L ３－ｎ ) ｑ１ and A in formula (E) １３ (Si(R ２ ) ｎ L ３－ｎ ) ｑ１ A preferred embodiment of the formula (C) will be described below. １１ (Si(R ２ ) ｎ L ３－ｎ) ｑ１ , A in formula (D) １２ (Si(R ２ ) ｎ L ３－ｎ ) ｑ１ and A in formula (E) １３ (Si(R ２ ) ｎ L ３－ｎ ) ｑ１ A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ However, in the case of formula (C), A is a (p1+q1)-valent group, in the case of formula (D), A is a (q1+1)-valent group, and in the case of formula (E), A is a (q1+u1)-valent group.

[0269] A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ The group represented by the formula (3-1A) is preferably the group (3-1A) or the group (3-1B), and more preferably the group (3-1A).

[0270] -Q ａ -X ３１ (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ ) ｈ (-R ３１ ) ｉ …(3-1A) -Q ｃ - [CH ２ C (R ３２ ) (-Q ｄ -Si(R ２ ) ｎ L ３－ｎ )] ｙ -R ３３ ...(3-1B) In addition, in the formula (3-1A) and the formula (3-1B), R ２ , L, and n are defined as above.

[0271] In formula (3-1A), Q ａ is a single bond or a divalent linking group. Examples of the divalent linking group include a divalent hydrocarbon group, a divalent heterocyclic group, —O—, —S—, and —SO ２ -, -N(R ｄ)-, -C(O)-, -Si(R ａ ) ２ - and groups obtained by combining two or more of these. The divalent hydrocarbon group may be a divalent saturated hydrocarbon group, a divalent aromatic hydrocarbon group, an alkenylene group, or an alkynylene group. The divalent saturated hydrocarbon group may be linear, branched, or cyclic, and examples thereof include alkylene groups. The alkylene group preferably has 1 to 30 carbon atoms, more preferably 1 to 20, even more preferably 4 to 20, and particularly preferably 5 to 15. Furthermore, the divalent aromatic hydrocarbon group preferably has 5 to 20 carbon atoms, and examples thereof include a phenylene group. In addition, the group may be an alkenylene group having 2 to 20 carbon atoms or an alkynylene group having 2 to 20 carbon atoms. The R ａ is an alkyl group (preferably having 1 to 10 carbon atoms) or a phenyl group. ｄ is a hydrogen atom or an alkyl group (preferably having 1 to 10 carbon atoms). Examples of groups formed by combining two or more of these groups include -OC(O)-, -C(O)O-, -C(O)S-, and -C(O)N(R ｄ ) -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ ) -, -N(R ｄ )C(O)O-, -OC(O)N(R ｄ ) -, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -C(O)N(R ｄ an alkylene group having —N(R ｄ )C(O)-, an alkylene group having —OC(O)N(R ｄ an alkylene group having —OC(O)—, an alkylene group having —C(O)O—, an alkylene group having —C(O)S—, an alkylene group having —N(R ｄ an alkylene group having —N(R ｄ )C(O)N(R ｄ an alkylene group having —SO ２ N (Rｄ )- and alkylene groups -Si(R ａ ) ２ -phenylene group -Si(R ａ ) ２ Examples include:

[0272] In formula (3-1A), X ３１ is a single bond, an alkylene group, a carbon atom, a nitrogen atom, a silicon atom, a divalent to octavalent organo(poly)siloxane residue, or a group having a (h+i+1)-valent ring. The alkylene group may have -O-, a silphenylene skeleton group, a divalent organo(poly)siloxane residue, or a dialkylsilylene group. The alkylene group may have a plurality of groups selected from the group consisting of -O-, a silphenylene skeleton group, a divalent organo(poly)siloxane residue, and a dialkylsilylene group. X ３１ The number of carbon atoms in the alkylene group represented by the formula (I) is preferably 1 to 20, and more preferably 1 to 10. Examples of the divalent to octavalent organo(poly)siloxane residue include a divalent organo(poly)siloxane residue and a (w2+1)-valent organo(poly)siloxane residue described below.

[0273] In formula (3-1A), X ３１ is a group having a (h+i+1)-valent ring, Q ａ , (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ ) and R ３１ is directly bonded to an atom constituting the ring, provided that the ring is a ring other than an organopolysiloxane ring. ３１The ring in may be any of a monocycle, a fused polycycle, a bridged ring, a spiro ring, and an aggregate polycycle, and the atoms constituting the ring may be a carbocycle consisting of only carbon atoms, or a heterocycle consisting of a heteroatom having a valence of divalent or higher and a carbon atom. The bond between the atoms constituting the ring may be a single bond or a multiple bond. Furthermore, the ring may be an aromatic ring or a non-aromatic ring. As the monocycle, a 4- to 8-membered ring is preferred, and a 5- or 6-membered ring is more preferred. As the fused polycycle, a fused polycycle in which two or more 4- to 8-membered rings are fused is preferred, and a fused polycycle in which two or three rings selected from 5- and 6-membered rings are bonded, and a fused polycycle in which one or two rings selected from 5- or 6-membered rings are bonded to one 4-membered ring are more preferred. The bridged ring is preferably a bridged ring having a 5-membered or 6-membered ring as the largest ring, and the spiro ring is preferably a spiro ring consisting of two 4- to 6-membered rings. The assembled polycycle is preferably an assembled polycycle in which two or three rings selected from the 5-membered and 6-membered rings are bonded via a single bond, 1 to 3 carbon atoms, or one heteroatom having a valence of 2 or 3. In the assembled polycycle, each ring may have a Q ａ , (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ ) and R ３１ (when i = 1 or more) is preferably bonded. As heteroatoms constituting the ring, nitrogen atoms, oxygen atoms, and sulfur atoms are preferred, and nitrogen atoms and oxygen atoms are more preferred. The number of heteroatoms constituting the ring is preferably 3 or less. Furthermore, when the number of heteroatoms constituting the ring is 2 or more, the heteroatoms may be different.

[0274] X ３１In terms of ease of production of the compound and further excellent abrasion resistance of the surface treatment layer, the ring in the formula (I) is preferably one selected from the group consisting of a 3- to 8-membered aliphatic ring, a benzene ring, a 3- to 8-membered heterocyclic ring, a fused ring in which two or three of these rings are fused, a bridged ring in which the largest ring is a 5- or 6-membered ring, and an assembled polycyclic ring having two or more of these rings and in which the linking group is a single bond, an alkylene group having 3 or less carbon atoms, an oxygen atom, or a sulfur atom. Preferred rings are a benzene ring, a 5- or 6-membered aliphatic ring, a 5- or 6-membered heterocyclic ring having a nitrogen atom or an oxygen atom, and a fused ring of a 5- or 6-membered carbocyclic ring with a 4- to 6-membered heterocyclic ring. Specific examples of the ring include the rings shown below, as well as a 1,3-cyclohexadiene ring, a 1,4-cyclohexadiene ring, an anthracene ring, a cyclopropane ring, a decahydronaphthalene ring, a norbornene ring, a norbornadiene ring, a furan ring, a pyrrole ring, a thiophene ring, a pyrazine ring, a morpholine ring, an aziridine ring, an isoquinoline ring, an oxazole ring, an isoxazole ring, a thiazole ring, an imidazole ring, a pyrazole ring, a pyran ring, a pyridazine ring, a pyrimidine ring, and an indene ring. Rings having an oxo group (═O) are also shown below.

[0275]

[0276] X ３１ The bond that does not constitute the ring of the atom that constitutes the ring in ａ , (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ ) or R ３１ When there are remaining bonds, the remaining bonds are bonded to a hydrogen atom or a substituent. Examples of the substituent include a halogen atom, an alkyl group (which may contain an etheric oxygen atom between carbon atoms), a cycloalkyl group, an alkenyl group, an allyl group, an alkoxy group, and an oxo group (=O). In addition, when one of the carbon atoms constituting the ring is bonded to Q ａ , (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ ) or R ３１When there are two bonds bonded to one of the carbon atoms, Q ａ and (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ ) may be bonded to two (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ ) may be bonded. ａ and (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ ) or R ３１ It is preferable that h (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ ) may be bonded to different ring-constituting atoms, and two of them may be bonded to one ring-constituting carbon atom, and two (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ There may be two or more ring-constituting carbon atoms to which i R ３１ may be bonded to different ring-constituting atoms, two of which may be bonded to one ring-constituting carbon atom, and two R ３１ There may be two or more ring-constituting carbon atoms to which is bonded.

[0277] Among them, X ３１ From the viewpoint of improving the abrasion resistance of the surface treatment layer, is preferably a carbon atom, a nitrogen atom, a silicon atom, a tetravalent to octavalent organo(poly)siloxane residue, or a group having a (h+i+1)-valent ring, and more preferably a carbon atom.

[0278] In formula (3-1A), Q ｂ is a single bond or a divalent linking group. The definition of a divalent linking group is the same as that of Q ａ This is the same as the definition explained in

[0279] Among them, Q ｂis preferably an alkylene group which may have an etheric oxygen atom. The number of carbon atoms in the alkylene group is preferably 1 to 30, more preferably 1 to 20, and even more preferably 2 to 20, and may be 2 to 10, 2 to 6, or 2 to 5. Examples include 2, 3, 8, 9, and 11. The number of carbon atoms may also be 1 to 10.

[0280] In formula (3-1A), R ３１ is a hydrogen atom, a hydroxyl group, or an alkyl group. The alkyl group preferably has 1 to 5 carbon atoms, more preferably 1 to 3 carbon atoms, and even more preferably 1 carbon atom.

[0281] X ３１ When X is a single bond or an alkylene group, h is 1 and i is 0; ３１ is a nitrogen atom, h is an integer of 1 to 2, i is an integer of 0 to 1, and h+i=2 is satisfied; ３１ When X is a carbon atom or a silicon atom, h is an integer of 1 to 3, i is an integer of 0 to 2, and h+i=3 is satisfied; ３１ When X is a divalent to octavalent organo(poly)siloxane residue, h is an integer of 1 to 7, i is an integer of 0 to 6, and h+i=1 to 7. ３１ is a group having a (h+i+1)-valent ring, h is an integer of 1 to 7, i is an integer of 0 to 6, and h+i=1 to 7 is satisfied. ｂ -Si(R) ｎ L ３－ｎ If there are two or more (-Q ｂ -Si(R) ｎ L ３－ｎ ) may be the same or different. ３１ If there are two or more, there are two or more (-R ３１ ) may be the same or different.

[0282] In particular, it is preferable that i is 0 from the viewpoint of improving the abrasion resistance of the surface treatment layer.

[0283] In formula (3-1B), Q ｃ is a single bond or a divalent linking group. The definition of a divalent linking group is the same as that of Q ａ This is the same as the definition explained in

[0284] In formula (3-1B), R ３２ is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, and is preferably a hydrogen atom in view of ease of production of the compound. As the alkyl group, a methyl group is preferred.

[0285] In formula (3-1B), Q ｄ is a single bond or an alkylene group. The number of carbon atoms in the alkylene group is preferably 1 to 10, more preferably 1 to 6. From the viewpoint of ease of production of the compound, Q ｄ is a single bond or CH ２ It is preferable that −.

[0286] In formula (3-1B), R ３３ is a hydrogen atom or a halogen atom, and is preferably a hydrogen atom in view of ease of producing the compound.

[0287] y is an integer of 1 to 10, preferably an integer of 1 to 6. ２ C (R ３２ ) (-Q ｄ -Si(R ２ ) ｎ L ３－ｎ ) )] may be the same or different.

[0288] As the group (3-1A), groups (3-1A-1) to (3-1A-7) are preferred.

[0289] -(X ３２ ) ｓ１ -Q ｂ１ -Si(R ２ ) ｎ L ３－ｎ ...(3-1A-1) -(X ３３ ) ｓ２ -Q ａ２ -N[-Q ｂ２ -Si(R ２ ) ｎ L ３－ｎ ] ２ ...(3-1A-2) -Q ａ３ -Si(R ｇ ) [-Q ｂ３ -Si(R ２ ) ｎ L ３－ｎ ]２ ...(3-1A-3) -[Q ｅ ] ｓ４ -Q ａ４ -(O) ｔ４ -C[-(O) ｕ４ -Q ｂ４ -Si(R ２ ) ｎ L ３－ｎ ] ３－ｗ１ (-R ３１ ) ｗ１ ...(3-1A-4) -Q ａ５ -Si[-Q ｂ５ -Si(R ２ ) ｎ L ３－ｎ ] ３ ...(3-1A-5) -[Q ｅ ] ｖ -Q ａ６ -Z ａ [-Q ｂ６ -Si(R ２ ) ｎ L ３－ｎ ] ｗ２ ...(3-1A-6) -[Q ｅ ] ｓ４ -Q ａ４ -(O) ｔ４ -Z ｃ [-(O-Q ｂ４ ) ｕ４ -Si(R ２ ) ｎ L ３－ｎ ] ｗ３ (-OH) ｗ４ ...(3-1A-7) In the formulas (3-1A-1) to (3-1A-7), R ２ , L, and n are defined as above.

[0290] Among these, the group (3-1A) is preferably the group (3-1A-4).

[0291] In the group (3-1A-1), X ３２ is -O-, -S-, -N(R ｄ )-, -C(O)-, -C(O)O-, -C(O)S-, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -N(R ｄ)C(O)-,-N(R ｄ )C(O)N(R ｄ )-,-OC(O)N(R ｄ )- or -C(O)N(R ｄ )-; or a combination of these with a divalent linking group (wherein N in the formula is Q ｂ１ (Binds to R ｄ The definition of is as described above. s1 is 0 or 1.

[0292] X ３２ However, -O-, -S-, -N(R ｄ )-, -C(O)-, -C(O)O-, -C(O)S-, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ )-,-OC(O)N(R ｄ )- or -C(O)N(R ｄ )- and a divalent linking group, the divalent linking group is Si(R ３ ) ２ or Si(R ４ ) ２ or B of formula (E) １１ The divalent linking group includes an alkylene group, an organo(poly)siloxane residue, a polyalkylene oxide group, and combinations thereof.

[0293] Q ｂ１ is a single bond or an alkylene group. The alkylene group may have -O-, a silphenylene skeletal group, or a dialkylsilylene group. The alkylene group may have a plurality of groups selected from the group consisting of -O-, a silphenylene skeletal group, a divalent organo(poly)siloxane residue, and a dialkylsilylene group. When the alkylene group has -O-, a silphenylene skeletal group, a divalent organo(poly)siloxane residue, or a dialkylsilylene group, it is preferable that these groups be present between carbon atoms. Q ｂ１The number of carbon atoms in the alkylene group represented by the formula (I) is preferably 1 to 30, more preferably 1 to 20, still more preferably 2 to 20, and particularly preferably 2 to 6. The number of carbon atoms may also be 1 to 10.

[0294] In the group (3-1A-2), X ３３ is -O-, -S-, -N(R ｄ )-, -C(O)-, -C(O)O-, -C(O)S-, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ )-,-OC(O)N(R ｄ )- or -C(O)N(R ｄ )-; or a combination of these with a divalent linking group. ｄ The definition of is as described above. s2 is 0 or 1. s2 is preferably 0 in view of ease of production of the compound.

[0295] X ３３ However, -O-, -S-, -N(R ｄ )-, -C(O)-, -C(O)O-, -C(O)S-, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ )-,-OC(O)N(R ｄ )- or -C(O)N(R ｄ )- and a divalent linking group, the divalent linking group is Si(R ３ ) ２ or Si(R ４ ) ２ or B of formula (E) １１ The divalent linking group includes an alkylene group, an organo(poly)siloxane residue, a polyalkylene oxide group, and combinations thereof.

[0296] Q ａ２represents a single bond, an alkylene group, -C(O)-, or an etheric oxygen atom, -C(O)-, -C(O)O-, -OC(O)-, -C(O)N(R ｄ ) -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ ) -, -N(R ｄ )C(O)O-, -OC(O)N(R ｄ ) -, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -C(O)N(R ｄ )- or -NH-. ａ２ The number of carbon atoms in the alkylene group represented by the formula (I) is preferably 1 to 20, more preferably 1 to 10, even more preferably 1 to 6, and particularly preferably 1 to 3. ａ２ an etheric oxygen atom between carbon atoms of an alkylene group having two or more carbon atoms, represented by —C(O)—, —C(O)O—, —OC(O)—, —C(O)N(R ｄ ) -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ ) -, -N(R ｄ )C(O)O-, -OC(O)N(R ｄ ) -, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -C(O)N(R ｄ The group having — or —NH— preferably has 2 to 10 carbon atoms, more preferably 2 to 6 carbon atoms.

[0297] Q ａ２ is preferably a single bond in terms of ease of production of the compound.

[0298] Q ｂ２ is an alkylene group or a group having a divalent organo(poly)siloxane residue, an etheric oxygen atom, or —NH— between carbon atoms of an alkylene group having two or more carbon atoms. ｂ２The number of carbon atoms in the alkylene group represented by the formula (I) is preferably 1 to 30, more preferably 1 to 20, and even more preferably 2 to 20, and may be 2 to 10 or 2 to 6. Examples include 2, 3, 8, 9, and 11. The number of carbon atoms may also be 1 to 10. Q ｂ２ The number of carbon atoms in the divalent organo(poly)siloxane residue, the etheric oxygen atom, or the group having —NH— between carbon atoms in the alkylene group having 2 or more carbon atoms, represented by the following formula (I), is preferably 2 to 10, and more preferably 2 to 6.

[0299] Q ｂ２ As the compound, -CH ２ CH ２ CH ２ -, -CH ２ CH ２ OCH ２ CH ２ CH ２ - is preferred (where the right side is bonded to Si).

[0300] Two [-Q ｂ２ -Si(R ２ ) ｎ L ３－ｎ ] may be the same or different.

[0301] In the group (3-1A-3), Q ａ３ is a single bond or an alkylene group which may have an etheric oxygen atom. ａ３ The alkylene group which may have an etheric oxygen atom preferably has 1 to 10 carbon atoms, and particularly preferably has 2 to 6 carbon atoms.

[0302] R ｇ is a hydrogen atom, a hydroxyl group, or an alkyl group. ｇ From the viewpoint of ease of production of the compound, a hydrogen atom or an alkyl group is preferred. The alkyl group preferably has 1 to 10 carbon atoms, more preferably 1 to 4 carbon atoms, and further preferably is a methyl group.

[0303] Q ｂ３is an alkylene group or a group having an etheric oxygen atom or a divalent organo(poly)siloxane residue between carbon atoms of an alkylene group having two or more carbon atoms. ｂ３ The number of carbon atoms in the alkylene group represented by the formula (I) is preferably 1 to 30, more preferably 1 to 20, and even more preferably 2 to 20, and may be 2 to 10 or 2 to 6. Examples include 2, 3, 8, 9, and 11. The number of carbon atoms may also be 1 to 10. Q ｂ３ The number of carbon atoms in the group having an etheric oxygen atom or a divalent organo(poly)siloxane residue between carbon atoms in the alkylene group having 2 or more carbon atoms, represented by the formula (I), is preferably 2 to 20, more preferably 2 to 10, and even more preferably 2 to 6. ｂ３ is preferably -CH ２ CH ２ -, -CH ２ CH ２ CH ２ - or -CH ２ CH ２ CH ２ CH ２ CH ２ CH ２ CH ２ CH ２ - is preferred.

[0304] Two [-Q ｂ３ -Si(R ２ ) ｎ L ３－ｎ ] may be the same or different.

[0305] In the group (3-1A-4), Q ｅ is -C(O)O-, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -N(R ｄ )C(O)- or -C(O)N(R ｄ )-; or a combination of these with a divalent linking group. ｅ is -C(O)O-, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -N(Rｄ )C(O)- or -C(O)N(R ｄ )- and a divalent linking group, the divalent linking group is Si(R ３ ) ２ or Si(R ４ ) ２ or B of formula (E) １１ Examples of the divalent linking group include an alkylene group, an organo(poly)siloxane residue, a polyalkylene oxide group, and combinations thereof. ３１ The definition of is as described above. When w1 is 1 or 2, R ３１ is preferably a hydrogen atom. s4 is 0 or 1. Q ａ４ is a single bond or an alkylene group which may have an etheric oxygen atom. The number of carbon atoms in the alkylene group which may have an etheric oxygen atom is preferably 1 to 20, more preferably 1 to 10, still more preferably 1 to 6, and particularly preferably 1 to 3. t4 is 0 or 1 (provided that Q ａ４ If -Q is a single bond, it is 0. ａ４ -(O) ｔ４ When s4 is 0, a single bond or —CH ２ O-, -CH ２ OCH ２ -, -CH ２ OCH ２ CH ２ O-, -CH ２ OCH ２ CH ２ OCH ２ -, -CH ２ OCH ２ CH ２ CH ２ CH ２ OCH ２ When s4 is 1, a single bond or —CH ２ -, -CH ２ CH ２ - is preferred.

[0306] Q ｂ４ is an alkylene group, and the alkylene group is —O—, —C(O)N(Rｄ )-(R ｄ The definition of is as described above. ), may have a silphenylene skeleton group, a divalent organo(poly)siloxane residue, or a dialkylsilylene group. When the alkylene group has -O- or a silphenylene skeleton group, it is preferable that the alkylene group has -O- or a silphenylene skeleton group between carbon atoms. In addition, when the alkylene group is -C(O)N(R ｄ )-, dialkylsilylene group or divalent organo(poly)siloxane residue, carbon atom-carbon atom or (O) ｕ４ It is preferable that these groups are present at the end of the bond with Q. ｂ４ The number of carbon atoms in the alkylene group represented by the formula (I) is preferably 1 to 30, more preferably 1 to 20, and even more preferably 2 to 20, and may be 2 to 10 or 2 to 6. Examples include 2, 3, 8, 9, and 11. The number of carbon atoms may also be 1 to 10.

[0307] u4 is 0 or 1. -(O) ｕ４ -Q ｂ４ As the -, -CH is preferred from the viewpoint of ease of production of the compound. ２ CH ２ -, -CH ２ CH ２ CH ２ -, -CH ２ OCH ２ CH ２ CH ２ -, -CH ２ OCH ２ CH ２ CH ２ CH ２ CH ２ -, -OCH ２ CH ２ CH ２ -, -OSi(CH ３ ) ２ CH ２ CH ２ CH ２ -, -OSi(CH ３ ) ２ OSi(CH ３ ) ２ CH ２ CH ２ CH ２-, -CH ２ CH ２ CH ２ Si(CH ３ ) ２ PhSi(CH ３ ) ２ CH ２ CH ２ - is preferred (where the right side is bonded to Si).

[0308] w1 is an integer of 0 to 2, preferably 0 or 1, and more preferably 0. [-(O) ｕ４ -Q ｂ４ -Si(R ２ ) ｎ L ３－ｎ If there are two or more [-(O) ｕ４ -Q ｂ４ -Si(R ２ ) ｎ L ３－ｎ ] may be the same or different. ３１ If there are two or more, there are two or more (-R ３１ ) may be the same or different.

[0309] In the group (3-1A-5), Q ａ５ is an alkylene group which may have an etheric oxygen atom. The alkylene group which may have an etheric oxygen atom preferably has 1 to 10 carbon atoms, and particularly preferably has 2 to 6 carbon atoms. ａ５ As the compound, -OCH ２ CH ２ CH ２ -, -OCH ２ CH ２ OCH ２ CH ２ CH ２ -, -CH ２ CH ２ -, -CH ２ CH ２ CH ２ - is preferred (where the right side is bonded to Si).

[0310] Q ｂ５is an alkylene group or a group having an etheric oxygen atom or a divalent organo(poly)siloxane residue between carbon atoms of an alkylene group having two or more carbon atoms. ｂ５ The number of carbon atoms in the alkylene group represented by the formula (I) is preferably 1 to 30, more preferably 1 to 20, and even more preferably 2 to 20, and may be 2 to 10 or 2 to 6. Examples include 2, 3, 8, 9, and 11. The number of carbon atoms may also be 1 to 10. Q ｂ５ The number of carbon atoms in the group having an etheric oxygen atom or a divalent organo(poly)siloxane residue between carbon atoms in the alkylene group having 2 or more carbon atoms, represented by the formula (I), is preferably 2 to 20, more preferably 2 to 10, and even more preferably 2 to 6. ｂ５ As the compound, -CH ２ CH ２ CH ２ -, -CH ２ CH ２ OCH ２ CH ２ CH ２ - is preferred (however, the right side is Si(R ２ ) ｎ L ３－ｎ Bind to. ).

[0311] Three [-Q ｂ５ -Si(R ２ ) ｎ L ３－ｎ ] may be the same or different.

[0312] Q in group (3-1A-6) ｅ is as defined in the above group (3-1A-4). v is 0 or 1.

[0313] Q ａ６ is an alkylene group which may have an etheric oxygen atom. The alkylene group which may have an etheric oxygen atom preferably has 1 to 10 carbon atoms, and particularly preferably has 2 to 6 carbon atoms. ａ６ As the compound, -CH ２ OCH ２ CH ２ CH ２ -, -CH２ OCH ２ CH ２ OCH ２ CH ２ CH ２ -, -CH ２ CH ２ -, -CH ２ CH ２ CH ２ - is preferred (however, the right side is Z ａ Bind to. ).

[0314] Z ａ is a (w2+1)-valent organo(poly)siloxane residue, or a (w2+1)-valent group having an alkylene group between the organo(poly)siloxane residues. w2 is an integer from 2 to 7. Examples of the (w2+1)-valent organo(poly)siloxane residue and the (w2+1)-valent group having an alkylene group between the organo(poly)siloxane residues include the following groups. However, R in the following formula ａ * indicates a binding site.

[0315]

[0316] Q ｂ６ is an alkylene group or a group having an etheric oxygen atom or a divalent organo(poly)siloxane residue between carbon atoms of an alkylene group having two or more carbon atoms. ｂ６ The number of carbon atoms in the alkylene group represented by the formula (I) is preferably 1 to 30, more preferably 1 to 20, and even more preferably 2 to 20, and may be 2 to 10 or 2 to 6. Examples include 2, 3, 8, 9, and 11. The number of carbon atoms may also be 1 to 10. Q ｂ６ The number of carbon atoms in the group having an etheric oxygen atom or a divalent organo(poly)siloxane residue between carbon atoms in the alkylene group having 2 or more carbon atoms, represented by the formula (I), is preferably 2 to 20, more preferably 2 to 10, and even more preferably 2 to 6. ｂ６ As the compound, -CH ２ CH ２ -, -CH ２ CH２ CH ２ - is preferred. ｂ６ -Si(R ２ ) ｎ L ３－ｎ ] may be the same or different.

[0317] In the group (3-1A-7), Z ｃ is a hydrocarbon group having a valence of (w3+w4+1). w3 is an integer of 4 or more. w4 is an integer of 0 or more. Q ｅ , s4, Q ａ４ , t4, Q ｂ４ The definitions and preferred ranges of u4 and u5 are the same as those of the respective symbols in group (3-1A-4).

[0318] Z ｃ may be composed of a hydrocarbon chain, and may have an etheric oxygen atom between carbon atoms in the hydrocarbon chain, and is preferably composed of a hydrocarbon chain. ｃ The valence of Z is preferably from 5 to 20, more preferably from 5 to 10, still more preferably from 5 to 8, and particularly preferably from 5 to 6. ｃ The number of carbon atoms in [-(O-Q ｂ４ ) ｕ４ -Si(R ２ ) ｎ L ３－ｎ If there are two or more [-(O-Q ｂ４ ) ｕ４ -Si(R ２ ) ｎ L ３－ｎ ] may be the same or different.

[0319] Formula A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ A in the formula may be any of the groups (g2-1) to (g2-7).

[0320]

[0321] (-A １ -Q １２ -) ｅ１ C (R ｅ２ ) ４－ｅ１－ｅ２ (-Q ２２ -) ｅ２ ... (g2-2) -A １ -Q １３ -N(-Q ２３ -) ２ ...(g2-3) (-A １ -Q １４ -) ｈ１ Z ４ (-Q ２４ -) ｈ２ ...(g2-4) (-A １ -Q １５ -) ｉ１ Si(R ｅ３ ) ４－ｉ１－ｉ２ (-Q ２５ -) ｉ２ ... (g2-5) -A １ -Q ２６ - (g2-6) -A １ -Q １２ -CH(-Q ２２ -)-Si(R ｅ３ ) ３－ｉ３ (-Q ２５ -) ｉ３ …(g2-7)

[0322] However, in formulas (g2-1) to (g2-7), A １ The side is Si(R ３ ) ２ or Si(R ４ ) ２ and Q ２２ , Q ２３ , Q ２４ , Q ２５ or Q ２６ The side is [-Si(R ２ ) ｎ L ３－ｎ ]. １ represents a single bond, -C(O)NR ６ -, -C(O)-, -OC(O)O-, -NHC(O)O-, -NHC(O)NR ６ -, -O- or SO２ NR ６ - is. １１ represents a single bond, —O—, an alkylene group, or —C(O)NR between carbon atoms of an alkylene group having two or more carbon atoms. ６ -, -C(O)-, -NR ６ - or O- containing group. １２ represents a single bond, an alkylene group, or an alkylene group having two or more carbon atoms with —C(O)NR between carbon atoms. ６ -, -C(O)-, -NR ６ - or O-, and A is Q １２ If there are two or more, there are two or more Q １２ may be the same or different. １３ is a single bond (where A １ is —C(O)—), an alkylene group, an alkylene group having 2 or more carbon atoms having —C(O)NR between carbon atoms. ６ -, -C(O)-, -NR ６ Q is a group having - or O-, or a group having -C(O)- at the N-terminal of the alkylene group. １４ Is, Q １４ Z to which ４ If the atom in is a carbon atom, Q １２ and Q １４ Z to which ４ When the atom in is a nitrogen atom, Q １３ and A is Q １４ If there are two or more, there are two or more Q １４ may be the same or different. １５ represents an alkylene group or an alkylene group having two or more carbon atoms with —C(O)NR between carbon atoms. ６ -, -C(O)-, -NR ６ - or O-, and A is Q １５ If there are two or more, there are two or more Q １５ may be the same or different. ２２ represents an alkylene group, an alkylene group having 2 or more carbon atoms, and a —C(O)NR group between carbon atoms. ６ -, -C(O)-, -NR ６a group having - or O-, and -C(O)NR at the end of the alkylene group not connected to Si; ６ -, -C(O)-, -NR ６ A group having - or O-, or an alkylene group having 2 or more carbon atoms having -C(O)NR between carbon atoms. ６ -, -C(O)-, -NR ６ - or O- and -C(O)NR at the end not connected to Si ６ -, -C(O)-, -NR ６ - or O-, and A is Q ２２ If there are two or more, there are two or more Q ２２ may be the same or different. ２３ represents an alkylene group or an alkylene group having two or more carbon atoms with —C(O)NR between carbon atoms. ６ -, -C(O)-, -NR ６ - or O-, and two Q ２３ may be the same or different. ２４ Is, Q ２４ Z to which ４ If the atom in is a carbon atom, Q ２２ and Q ２４ Z to which ４ When the atom in is a nitrogen atom, Q ２３ and A is Q ２４ If there are two or more, there are two or more Q ２４ may be the same or different. ２５ represents an alkylene group or an alkylene group having two or more carbon atoms with —C(O)NR between carbon atoms. ６ -, -C(O)-, -NR ６ - or O-, and A is Q ２５ If there are two or more, there are two or more Q ２５ may be the same or different. ２６ represents an alkylene group or an alkylene group having two or more carbon atoms with —C(O)NR between carbon atoms. ６ -, -C(O)-, -NR ６ - or O- containing group. ２２ , Q ２３ , Q ２４ , Q ２５ , Q２６ When Z is an alkylene group, it preferably has 1 to 20 carbon atoms, more preferably 1 to 10 carbon atoms, and even more preferably 1 to 6 carbon atoms. ４ Is, Q １４ has a carbon atom or nitrogen atom to which Q is directly bonded, ２４ is a group having a (h1+h2)-valent ring structure having a carbon atom or nitrogen atom to which R is directly bonded. ｅ１ is a hydrogen atom or an alkyl group, and A is R ｅ１ When there are two or more R ｅ１ may be the same or different. ｅ２ is a hydrogen atom, a hydroxyl group, an alkyl group, or an acyloxy group. ｅ３ is an alkyl group. ６ is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a phenyl group.

[0323] d1 is an integer of 0 to 3, preferably 1 or 2. d2 is an integer of 0 to 3, preferably 1 or 2. d1 + d2 is an integer of 1 to 3. d3 is an integer of 0 to 3, preferably 0 or 1. d4 is an integer of 0 to 3, preferably 2 or 3. d3 + d4 is an integer of 1 to 3. d1 + d3 is an integer of 1 to 5, preferably 1 or 2. d2 + d4 is an integer of 1 to 5, preferably 4 or 5. e1 + e2 is 3 or 4. e1 is an integer of 1 to 3, preferably 1 or 2. e2 is an integer of 1 to 3, preferably 2 or 3. h1 is an integer of 1 or more, preferably 1 or 2. h2 is an integer of 1 or more, preferably 2 or 3. i1 + i2 is 3 or 4. i1 is an integer of 1 to 3, and preferably 1 or 2. i2 is an integer of 1 to 3, and preferably 2 or 3. i3 is 2 or 3.

[0324] Q １１ , Q １２ , Q １３ , Q １４ , Q １５ , Q ２２ , Q ２３, Q ２４ , Q ２５ and Q ２６ The number of carbon atoms in the alkylene group is preferably 1 to 30, more preferably 1 to 20, and even more preferably 2 to 20, from the viewpoints of ease of production of the compound and further superior abrasion resistance of the surface treatment layer, and may be 2 to 10 or 2 to 6. Examples include 2, 3, 8, 9, and 11. The number of carbon atoms may also be 1 to 10, 1 to 6, or 1 to 4. However, when a specific bond is present between carbon atoms, the lower limit of the number of carbon atoms in the alkylene group is 2.

[0325] Z ４ Examples of the ring structure in Z include the ring structures described above, and the preferred embodiments are also the same. ４ The ring structure in １４ YaQ ２４ is directly bonded to the ring structure, for example, an alkylene group is linked to the alkylene group, and Q １４ YaQ ２４ are never connected.

[0326] R ｅ１ , R ｅ２ or R ｅ３ The number of carbon atoms in the alkyl group of R is preferably 1 to 6, more preferably 1 to 3, and particularly preferably 1 or 2, from the viewpoint of ease of production of the compound. ｅ２ The number of carbon atoms in the alkyl group portion of the acyloxy group is preferably 1 to 6, more preferably 1 to 3, and particularly preferably 1 or 2, from the viewpoint of ease of production of the compound. h1 is preferably 1 to 6, more preferably 1 to 4, even more preferably 1 or 2, and particularly preferably 1, from the viewpoint of ease of production of the compound and further excellent abrasion resistance of the surface treatment layer. h2 is preferably 2 to 6, more preferably 2 to 4, and particularly preferably 2 or 3, from the viewpoint of ease of production of the compound and further excellent abrasion resistance of the surface treatment layer.

[0327] Formula A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ Other forms of A in the above formula include groups (g2-8) to (g2-14).

[0328]

[0329] (-A １ -Q １２ -) ｅ１ C (R ｅ２ ) ４－ｅ１－ｅ２ (-Q ２２ -G １ ) ｅ２ ... (g2-9) -A １ -Q １３ -N(-Q ２３ -G １ ) ２ ...(g2-10) (-A １ -Q １４ -) ｈ１ Z ４ (-Q ２４ -G １ ) ｈ２ ...(g2-11) (-A １ -Q １５ -) ｉ１ Si(R ｅ３ ) ４－ｉ１－ｉ２ (-Q ２５ -G １ ) ｉ２ ...(g2-12) -A １ -Q ２６ -G １ ...(g2-13) -A １ -Q １２ -CH(-Q ２２ -G １ )-Si(R ｅ３ ) ３－ｉ３ (-Q ２５ -G １ ) ｉ３ …(g2-14)

[0330] However, in formulas (g2-8) to (g2-14), A １ The side is Si(R ３ ) ２ or Si(R ４ ) ２ and binds to G １ The side is [-Si(R ２ ) ｎ L ３－ｎ ] and combine.

[0331] G １ is the following group (g3), and A has two or more G１ may be the same or different. １ The symbols other than are the same as those in formulas (g2-1) to (g2-7). １３ ) ３－ｋ３ (-Q ３ -) ｋ３ ...(g3) In the group (g3), the Si side is Q ２２ , Q ２３ , Q ２４ , Q ２５ and Q ２６ Connect to Q ３ The side is [-Si(R ２ ) ｎ L ３－ｎ ]. １３ is an alkyl group. ３ represents an alkylene group, an alkylene group having 2 or more carbon atoms, and a —C(O)NR group between carbon atoms. ６ -, -C(O)-, -NR ６ - or -O- containing group, or (OSi(R ９ ) ２ ) ｐ -O-, and two or more Q ３ may be the same or different. k3 is 2 or 3. R ６ is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a phenyl group. ９ is an alkyl group, a phenyl group, or an alkoxy group, and two R ９ may be the same or different. p is an integer of 0 to 5, and when p is 2 or more, there are two or more (OSi(R ９ ) ２ ) may be the same or different.

[0332] Q ３The number of carbon atoms in the alkylene group is preferably 1 to 30, more preferably 1 to 20, and even more preferably 2 to 20, from the viewpoint of ease of production of the compound and further superior abrasion resistance of the surface treatment layer, and may be 2 to 10 or 2 to 6. Examples include 2, 3, 8, 9, and 11. The number of carbon atoms may be 1 to 10, 1 to 6, or 1 to 4. However, when there is a specific bond between carbon atoms, the lower limit of the number of carbon atoms in the alkylene group is 2. R １３ The number of carbon atoms in the alkyl group of R is preferably 1 to 6, more preferably 1 to 3, and even more preferably 1 or 2, from the viewpoint of ease of production of the compound. ９ The number of carbon atoms in the alkyl group of R is preferably 1 to 6, more preferably 1 to 3, and even more preferably 1 or 2, from the viewpoint of ease of production of the compound. ９ In view of excellent storage stability of the compound, the number of carbon atoms in the alkoxy group is preferably 1 to 6, more preferably 1 to 3, and particularly preferably 1 or 2. p is preferably 0 or 1.

[0333] [Examples of the first compound and the second compound] Specific examples of the first compound and the second compound are described in detail below. Specific examples of the first compound include the following compounds (1) to (3), (4A), and (5). Specific examples of the second compound include the following compound (4B).

[0334] Compound (1) A compound containing the following group 1a, a chain organo(poly)siloxane residue, a partial structure which is an alkylene chain or polyalkylene oxide chain having 3 or more carbon atoms, and the following group 1b. Group 1a: -M １ T １ ３ Group 1b: -Si(R ２ ) ｎ L ３－ｎ M １ is Si, Sn, or Ge, and T １ are each independently a hydrocarbon group or a trialkylsilyloxy group, R ２are each independently a monovalent hydrocarbon group, each L is independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group, and each n is independently an integer of 0 to 2. ２ , L, and n are R in the above formula (S1). ２ , L, and n are the same as those of the group 1a. １１ T in the explanation of １ ３ M １ - Details are the same as above.

[0335] Compound (2) A compound containing an alkyl group having two or more carbon atoms, a linear organo(poly)siloxane residue, and a reactive silyl group.

[0336] Compound (3) A compound comprising the following group 3a, a partial structure containing a divalent linear organo(poly)siloxane residue, and the following group 3b, wherein the partial structure is a divalent linear organo(poly)siloxane residue or a combination of a divalent linear organo(poly)siloxane residue and at least one of an alkylene chain and a polyalkylene oxide chain. Group 3a: a monovalent cyclic polysiloxane residue or a monovalent cage polysiloxane residue Group 3b: -Si(R ２ ) ｎ L ３－ｎ R ２ are each independently a monovalent hydrocarbon group, each L is independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group, and each n is independently an integer of 0 to 2. ２ , L, and n are R in the above formula (S1). ２ , L, and n.

[0337] Compounds (4A) and (4B) Compounds represented by the following formula (4A) or (4B) (R Ｔ１ -R Ｓ -(-SiR Ｔ２ ２ -) ｑ４ ) α -X Ａ -R Ｈ β ...(4A) R Ｈ γ -XＡ -O ｐ４ -R Ｓ -(-SiR Ｔ２ ２ -) ｑ４ -X Ａ -R Ｈ γ ... (4B) In formulas (4A) and (4B), R Ｓ are each independently a divalent linear organosiloxane group, and R Ｔ１ are each independently a hydrocarbon group, R Ｔ２ are each independently a hydrocarbon group, p4 is 0 or 1, q4 is each independently 0 or 1, R Ｈ is a group represented by any one of the following formulas (W1) to (W4), Ｈ In the present invention, there are two or more Si atoms to which hydroxyl groups or hydrolyzable groups are bonded, and X Ａ are each independently a single bond or a group represented by the following formula (W5), α is an integer of 1 to 9, β is an integer of 1 to 9, and γ is each independently an integer of 1 to 9. -(CH ２ CR １０ (R １５ ) X １１ -Si(R ２ ) ｎ８１ L ３－ｎ８１ ) ｔ -R １４ ...(W1)-SiR ａ１ ｋ８１ L ｌ８１ R ｃ１ ｍ８１ ...(W2) -CR ｄ１ ｋ８２ R ｅ１ ｌ８２ R ｆ１ ｍ８２ ... (W3) -NR ｇ１ R ｈ１ ...(W4) In formulae (W1) to (W4), each L is independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group, and R ２ are each independently a monovalent hydrocarbon group, ８１ is (SiR ２ ｎ８１L ３－ｎ８１ ) units are each independently an integer of 0 to 3, １１ are each independently a single bond or a divalent organic group; R １０ are each independently a hydrogen atom or a monovalent organic group; each t is independently an integer of 2 or more; R １４ are each independently a hydrogen atom, a halogen atom, or -X １１ -Si(R ２ ) ｎ８１ L ３－ｎ８１ and R １５ are each independently a single bond, an oxygen atom, an alkylene group having 1 to 6 carbon atoms, or an alkyleneoxy group having 1 to 6 carbon atoms; R ａ１ are each independently -Z ８１ -SiR ２１ ｐ８１ L ｑ８１ R ２３ ｒ８１ and Z ８１ are each independently a divalent organic group; R ２１ are each independently -Z １’ -SiR ２１’ ｐ１’ L ｑ１’ R ２３’ ｒ１’ and R ２３ are each independently a monovalent organic group; p81 is each independently an integer of 0 to 3; q81 is each independently an integer of 0 to 3; r81 is each independently an integer of 0 to 3; p81 + q81 + r81 is 3; Z １’ are each independently a divalent organic group; R ２１’ are each independently -Z １” -SiL ｑ１” R ２３” ｒ１” and R ２３’ are each independently a monovalent organic group; each p1' is independently an integer of 0 to 3; each q1' is independently an integer of 0 to 3; each r1' is independently an integer of 0 to 3; p1' + q1' + r1' is 3; Z １”are each independently a divalent organic group; R ２３” are each independently a monovalent organic group; q1" is each independently an integer of 0 to 3; r1" is each independently an integer of 0 to 3; q1"+r1" is 3; R ｃ１ are each independently a monovalent organic group; k81 is each independently an integer of 0 to 3; l81 is each independently an integer of 0 to 3; m81 is each independently an integer of 0 to 3; k81 + l81 + m81 is 3; R ｄ１ are each independently -Z ８２ -CR ７１ ｐ８２ R ７２ ｑ８２ R ７３ ｒ８２ and Z ８２ are each independently a single bond, an oxygen atom, or a divalent organic group; R ７１ are each independently -Z ２’ -CR ３２’ ｑ２’ R ３３’ ｒ２’ and R ７２ are each independently -Z ８３ -SiL ｎ８２ R ３５ ３－ｎ８２ and R ７３ are each independently a hydrogen atom, a hydroxyl group or a monovalent organic group; p82 is each independently an integer of 0 to 3; q82 is each independently an integer of 0 to 3; r82 is each independently an integer of 0 to 3; p82 + q82 + r82 is 3; Z ２’ are each independently a single bond, an oxygen atom, or a divalent organic group; R ３２’ are each independently -Z ８３ -SiL ｎ８２ R ３５ ３－ｎ８２ and R ３３’are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group; q2' are each independently an integer of 0 to 3; r2' are each independently an integer of 0 to 3; q2'+r2' is 3; Z ８３ are each independently a single bond, an oxygen atom, or a divalent organic group; R ３５ are each independently a monovalent organic group; n82 are each independently an integer of 0 to 3; R ｅ１ are each independently -Z ８３ -SiL ｎ８２ R ３５ ３－ｎ８２ and R ｆ１ are each independently a hydrogen atom, a hydroxyl group, or a monovalent organic group; k82 is each independently an integer of 0 to 3; l82 is each independently an integer of 0 to 3; m82 is each independently an integer of 0 to 3. k82 + l82 + m82 is 3; R ｇ１ and R ｈ１ are each independently -Z ８４ -SiL ｎ８１ R ２ ３－ｎ８１ , -Z ８４ -SiR ａ１ ｋ８１ L ｌ８１ R ｃ１ ｍ８１ , or -Z ８４ -CR ｄ１ ｋ８２ R ｅ１ ｌ８２ R ｆ１ ｍ８２ and Z ８４ are each independently a single bond, an oxygen atom, or a divalent organic group; provided that in formulae (W1), (W2), (W3), and (W4), there are at least two Si atoms bonded to a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group. ２ and L is R in the above formula (S1). ２ and L.

[0338] - (R ５０ ) ｐ５ -(X ５１ ) ｑ５-...(W5) In formula (W5), R ５０ is a single bond, -(CH ２ ) ｓ５ - or an o-, m- or p-phenylene group, s5 is an integer of 1 to 20, X ５１ is -(X ５２ ) ｌ５ - and X ５２ each occurrence independently represents an —O—, —S—, o-, m-, or p-phenylene group, —CO—, —C(O)O—, or —CONR ５４ --, --O-CONR ５４ -, -NR ５４ - and - (CH ２ ) ｎ５ - is a group selected from the group consisting of R ５４ is independently in each occurrence a hydrogen atom or a monovalent organic group, n5 is independently in each occurrence an integer from 1 to 20, l5 is an integer from 1 to 10, p5 is 0 or 1, q5 is 0 or 1, at least one of p5 and q5 is 1, (R ５０ ) ｐ５ and (X ５１ ) ｑ５ The order in which they exist is arbitrary.

[0339] X Ａ are each independently a single bond, an alkylene group having 1 to 20 carbon atoms, or —(CH ２ ) ｓ５ -X ５３ -, -X ５３ - (CH ２ ) ｔ５ - or -(CH ２ ) ｓ５ -X ５３ - (CH ２ ) ｔ５ Preferably, X is -. ５３ represents a single bond, —O—, —CO—, or —CONR ５４ --, --O-CONR ５４ -, -O-(CH ２ ) ｕ５ -CONR ５４ -, or -O-(CH ２ ) ｕ５ -CO-, and R５４ are each independently a hydrogen atom, a phenyl group, an alkyl group having 1 to 6 carbon atoms, or an oxyalkylene-containing group having 1 to 10 carbon atoms, s5 is an integer of 1 to 20, t5 is an integer of 1 to 20, and u5 is an integer of 1 to 20.

[0340] Compound (5) A compound represented by the following formula (5):

[0341]

[0342] In formula (5), Y is a single bond or *-Si(R ｓ２ ) ２ -L ｓ１ -. * represents a bond to an oxygen atom. Z represents an oxygen atom or a divalent hydrocarbon group having 1 to 10 carbon atoms. R ａ９ each independently represents a hydrocarbon group or a trialkylsilyloxy group. ａ９ When all of are hydrocarbon groups, R ａ９ The hydrocarbon group represented by R is an alkyl group. ｓ１ , R ｓ２ each independently represents an alkyl group having 1 to 10 carbon atoms. ｓ１ represents a divalent hydrocarbon group having 1 to 10 carbon atoms. X represents a group represented by any one of the following formulas (X-1) to (X-3). n9 represents a number from 1 to 150.

[0343]

[0344] In formulas (X-1) to (X-3), L ｘ１ and L ｘ２ each independently represents a divalent hydrocarbon group having 1 to 20 carbon atoms, and the methylene group (—CH ２ -) is -O- or -O-Si(R ｘ７ ) ２ - may be replaced by R ｘ１ ~R ｘ７ each independently represents a hydrogen atom or a hydrocarbon group having 1 to 10 carbon atoms. ａ１ each independently represents a hydrolyzable group, a group having a hydrolyzable group, or a trialkoxysilyloxy group.ａ２ each independently represents a trialkylsilyl-containing group, a hydrocarbon chain-containing group, a siloxane skeleton-containing group, a hydrolyzable group, a group having a hydrolyzable group, or a trialkoxysilyloxy group; X ａ２ When is a hydrolyzable group, X ａ２ and X ａ１ may be the same or different. n2 represents an integer of 1 to 50. n3 represents a number of 2 to 5. n4 represents a number of 0 to 5. In formula (X-3), (Si(R ｘ４ ) (-L ｘ２ -Si(X ａ２ ) (X ａ１ ) ２ )—O—) and (Si(R ｘ５ ) (R ｘ６ The units represented by (a)-(O)-) may be in any order.

[0345] Compounds (1) to (5) will be explained below.

[0346] (Compound (1)) Compound (1) is preferably a compound represented by the following formula (1A): [T １ ３ M １ -(O) ｒ -Z １ ] ｐ１ A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ ... (1A) In formula (1A), M １ is Si, Sn, or Ge, and T １ are each independently a hydrocarbon group or a trialkylsilyloxy group, r is 0 or 1, and Z １ are each independently an alkylene chain or a polyalkylene oxide chain, or a combination of an alkylene chain and a divalent linear organo(poly)siloxane residue, A is a single bond or a (p1+q1)-valent linking group, R ２are each independently a monovalent hydrocarbon group, L is each independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group, n is each independently an integer of 0 to 2, and p1 and q1 are each independently an integer of 1 or more, provided that Z １ are each independently an alkylene chain or a polyalkylene oxide chain, A is a (p1+q1)-valent linking group containing a linear organo(poly)siloxane residue.

[0347] T １ and M １ represents T in the above group 1a １ and M １ Since it is the same as １ is preferably Si. １ is preferably a trialkylsilyloxy group, more preferably a butyldimethylsilyloxy group, a trimethylsilyloxy group or a triethylsilyloxy group. ２ , L, and n are R in the above formula (S1). ２ , L, and n. １ The combination of an alkylene chain and a divalent linear organo(poly)siloxane residue represented by the formula (D3), (D4), or (D5) below is preferred.

[0348]

[0349] In formula (D3), Ak １ and Ak ２ Each independently represents an alkylene chain. ３ is R in formula (B1). ３ k11 is a number of 1 or more. k12 is 0 or 1. In formula (D4), Ak ３ means an alkylene chain. ３ is R in formula (B1). ３ k21 and k22 are each independently a number of 1 or more. In formula (D5), Ak ４ means an alkylene chain. ３ is R in formula (B1). ３In formula (D3), (D4), or (D5), *1 is linked to the group 1a side, and *2 is linked to the group 1b side.

[0350] A may be any group as long as it does not impair the effects of the present disclosure, and examples thereof include alkylene groups which may have an etheric oxygen atom or a divalent linear organo(poly)siloxane residue, carbon atoms, nitrogen atoms, silicon atoms, divalent to octavalent organo(poly)siloxane residues, and Si(R ２ ) ｎ L ３－ｎ A may include a triptycene structure. The triptycene structure refers to a partial structure in which two or more hydrogen atoms have been removed from triptycene.

[0351] Furthermore, A may be any of the above groups (g2-1) to (g2-14).

[0352] p1 is an integer of 1 or more. In order to provide a surface treatment layer with better water repellency, p1 is preferably 1 to 6, and more preferably 2 to 4. p1 may also be 1.

[0353] When p1 is 2 or more, a plurality of [T １ ３ M １ -(O) ｒ -Z １ ] may be the same or different from each other.

[0354] q1 is an integer of 1 or more. In order to provide a surface treatment layer with better abrasion resistance, q1 is preferably 1 to 15, more preferably 1 to 6, even more preferably 2 to 6, particularly preferably 2 to 4, and extremely preferably 2 or 3. q1 may be 1.

[0355] When q1 is 2 or more, a plurality of [Si(R ２ ) ｎ L ３－ｎ ] may be the same or different from each other.

[0356] The group A (Si(R２ ) ｎ L ３－ｎ ) ｑ１ A preferred embodiment of the compound (B) is the group A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ However, the preferred embodiments of the group A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ A in formula (1A) is [T １ ３ M １ -(O) ｒ -Z １ ] ｐ１ Connect to Z １ When the terminal of the side bonded to A is an alkylene chain, Z of A １ The end of the bonded side to Z is not an alkylene chain. １ When the terminal of the side bonded to A is a polyalkylene oxide chain, Z of A １ The end of the side that is bonded to the alkylene group is not a polyalkylene oxide chain.

[0357] The compound (1) is preferably a compound represented by the following formula (1B):

[0358]

[0359] In formula (1B), T １ is T in group 1a １ It is the same as R ３ is R in formula (B1). ３ k31 is the same as k31 in formula (D5). A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ is the group represented by A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ Ak is the same as the group represented by ４ is A in formula (D5) ４ is the same as

[0360] The compound (1) is preferably a compound represented by the following formula (1C), formula (1D), or formula (1E).

[0361]

[0362]

[0363]

[0364] In formula (1C), formula (1D), and formula (1E), R ３ is R in formula (B1). ３ k31 is the same as k31 in formula (D5). A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ is the group represented by A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ Ak is the same as the group represented by ４ is A in formula (D5) ４ is the same as

[0365] Specific examples of compound (1) include the following compounds:

[0366] In the following formula, n10 is a number of 1 or more, and n10 is preferably a number of 1 to 60, may be a number of 3 to 50, may be a number of 5 to 30, or may be a number of 7 to 25.

[0367]

[0368] In the following formula, k is preferably 1 to 80, more preferably 3 to 50, and even more preferably 3 to 30. m is preferably 1 to 30, more preferably 3 to 20, and even more preferably 3 to 10. t is preferably 1 to 30, more preferably 3 to 20, and even more preferably 3 to 10. In the following formula, n10 is a number of 1 or more, and n10 is preferably a number of 1 to 60, but may be a number of 3 to 50, a number of 5 to 30, or a number of 7 to 25.

[0369]

[0370] In the following formula, n10 is a number of 1 or more, and n10 is preferably a number of 1 to 60, may be a number of 3 to 50, may be a number of 5 to 30, or may be a number of 7 to 25.

[0371]

[0372] (Compound (2)) In compound (2), the alkyl group means an unsubstituted alkyl group. The alkyl group may be any of a linear alkyl group, a branched alkyl group, and a cyclic alkyl group, but a linear alkyl group or a branched alkyl group is preferred. The alkyl group preferably has 2 to 30 carbon atoms, more preferably 3 to 28 carbon atoms, and even more preferably 4 to 22 carbon atoms. The compound may contain only one alkyl group, or two or more alkyl groups. Since the alkyl group is a monovalent group, it is located at the terminal of the compound.

[0373] The compound (2) is preferably a compound represented by the following formula (2A): (T ２ -Z ２ ) ｐ１ A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ ... (2A) In formula (2A), T ２ is an alkyl group having two or more carbon atoms; Z ２ is a divalent chain organo(poly)siloxane residue, A is a single bond or a (p1+q1)-valent linking group, R ２ are each independently a monovalent hydrocarbon group; each L is independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; n is an integer of 0 to 2; and p1 and q1 are each independently an integer of 1 or greater.

[0374] T ２ Preferred embodiments of the alkyl group having 2 or more carbon atoms represented by the formula: are as described above. ２ The divalent chain organo(poly)siloxane residue represented by the formula (B1) is preferably a group represented by the formula (B1). ２ , L, and n are R in the above formula (S1). ２, L, and n. A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ In addition to the contents shown below, the group represented by A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ p1 and q1 are the same as p1 and q1 in the above formula (1A).

[0375] A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ The group represented by the formula (3-1A) is preferably the group (3-1A) or the group (3-1B), and more preferably the group (3-1A). ａ is a single bond or a divalent linking group. ａ Z ２ The end of the bonded side is not an oxysilyl group.

[0376] In formula (3-1A), X ３１ is a single bond, an alkylene group, a carbon atom, a nitrogen atom, a silicon atom, a divalent to octavalent organo(poly)siloxane residue, or a group having a (h+i+1)-valent ring. ａ When is a single bond, X ３１ Z ２ The terminal on the side bonding to X is not an oxysilyl group. ３１ may be terminated with an oxysilyl group.

[0377] In formula (3-1A), Q ｂ is a single bond or a divalent linking group. ａ and X ３１ If is a single bond, Q ｂ Z ２ The terminal of the bonded side is not an oxysilyl group. ｂ The terminal of may be an oxysilyl group. ｂ When Q is an alkylene group, ａ -X ３１ Q ｂ The side terminal is not an alkylene group.

[0378] In formula (3-1B), Q ｃ is a single bond or a divalent linking group. ｃ Z ２ The end of the bonded side is not an oxysilyl group.

[0379] As the group (3-1A), groups (3-1A-1) to (3-1A-7) are preferred. However, Z ２ The end of the bonded side is not an oxysilyl group.

[0380] In the group (3-1A-1), X ３２ is -O-, -S-, -N(R ｄ )-, -C(O)O-, -C(O)S-, -N(R ｄ )C(O)N(R ｄ )-,-OC(O)N(R ｄ )-, or -C(O)N(R ｄ )- is preferred, and —C(O)O— or —C(O)N(R ｄ )- is more preferred. s1 is preferably 0, and Q ｂ１ is preferably an alkylene group having 2 to 6 carbon atoms.

[0381] In the group (3-1A-2), X ３３ is —O—, —C(O)O—, or —C(O)N(R ｄ )- is preferred.

[0382] A in formula (2A) may be any of groups (g2-1) to (g2-7).

[0383] However, in formulas (g2-1) to (g2-7), A １ Side is Z ２ and Q ２２ , Q ２３ , Q ２４ , Q ２５ or Q ２６ The side is [-Si(R ２ ) ｎ L ３－ｎ ] and combine.

[0384] Other embodiments of A include groups (g2-8) to (g2-14).

[0385] However, in formulas (g2-8) to (g2-14), A １ Side is Z ２ and binds to G １ The side is [-Si(R ２ ) ｎ L ３－ｎ ] and combine.

[0386] The compound (2) is preferably a compound represented by the following formula (2B):

[0387] In formula (2B), R ５１ is an alkyl group having two or more carbon atoms. ５２ and R ５４ are each independently an alkylene group. ５３ is -C(O)O-, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -N(R ｄ )C(O)- or -C(O)N(R ｄ )-. R ３ is R in formula (B1). ３ k1 is the same as k1 in formula (B1). X ３１ (-Q ｂ -Si(R ２ ) ｎ L ３－ｎ ) ｈ (-R ３１ ) ｉ is X in group (3-1A). ３１ (-Q ｂ -Si(R ３ ) ｎ L ３－ｎ ) ｈ (-R ３１ ) ｉ t1 is 0 or 1.

[0388] R ５１ Preferred embodiments of the alkyl group represented by the formula (I) are as explained above in the section on alkyl groups. ５２The alkylene group represented by the formula (I) may be linear, branched, or cyclic. The alkylene group preferably has 1 to 30 carbon atoms, more preferably 1 to 20 carbon atoms, even more preferably 4 to 20 carbon atoms, and particularly preferably 5 to 15 carbon atoms. ５４ The alkylene group represented by the formula (I) may be linear, branched, or cyclic. The alkylene group preferably has 1 to 20 carbon atoms, more preferably 1 to 10 carbon atoms, even more preferably 1 to 6 carbon atoms, and particularly preferably 1 to 3 carbon atoms.

[0389] Examples of compound (2) include the following compounds: In the following formula, n10 is a number of 1 or more, and n10 is preferably a number of 1 to 60, may be a number of 3 to 50, may be a number of 5 to 30, or may be a number of 7 to 25.

[0390]

[0391]

[0392]

[0393]

[0394]

[0395] (Compound (3)) Compound (3) is preferably a compound represented by the following formula (3A): [T ３ -(O) ｒ -Z ３ ] ｐ１ A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ ...(3A) In formula (3A), T ３ is a monovalent cyclic polysiloxane residue or a monovalent cage-like polysiloxane residue, r is 0 or 1, Z ３ is a divalent linear organo(poly)siloxane residue or a combination of a divalent linear organo(poly)siloxane residue and at least one of an alkylene chain and a polyalkylene oxide chain, A is a single bond or a (p1+q1)-valent linking group, R ２are each independently a monovalent hydrocarbon group; each L is independently a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; n is an integer of 0 to 2; and p1 and q1 are each independently an integer of 1 or greater.

[0396] R ２ , L, and n are R in the above formula (S1). ２ , L, and n. A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ In addition to the contents shown below, the group represented by A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ p1 and q1 are the same as p1 and q1 in the above formula (1A).

[0397] The details of the monovalent cyclic polysiloxane residue or the monovalent cage-like polysiloxane residue are as follows: T １１ This is as described above in the description of the first embodiment.

[0398] A(Si(R ２ ) ｎ L ３－ｎ ) ｑ１ The group represented by the formula (3-1A) is preferably the group (3-1A) or the group (3-1B), and more preferably the group (3-1A).

[0399] In formula (3-1A), Q ａ is a single bond or a divalent linking group. ａ Z ３ The terminal on the side bonding to Z is not an alkylene group, a polyalkylene oxide chain, or a divalent organo(poly)siloxane residue. ３ When the A-side terminal of is an alkylene chain, Q ａ represents a divalent hydrocarbon group other than an alkylene group, a divalent heterocyclic group, —O—, —S—, —SO ２ -, -N(R ｄ )-, -C(O)-, -Si(R ａ ) ２ -, -OC(O)-, -C(O)O-, -C(O)S-, -C(O)N(R ｄ) -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ ) -, -N(R ｄ )C(O)O-, -OC(O)N(R ｄ ) -, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -C(O)N(R ｄ an alkylene group having —N(R ｄ )C(O)-, an alkylene group having —OC(O)N(R ｄ an alkylene group having —OC(O)—, an alkylene group having —C(O)O—, an alkylene group having —C(O)S—, an alkylene group having —N(R ｄ an alkylene group having —N(R ｄ )C(O)N(R ｄ )- or -SO ２ N (R ｄ )- is preferred, and an alkylene group having —OC(O)—, —C(O)N(R ｄ )-, an alkylene group having —OC(O)N(R ｄ an alkylene group having —C(O)O—, an alkylene group having —C(O)S—, an alkylene group having —N(R ｄ an alkylene group having —N(R ｄ )C(O)N(R ｄ An alkylene group having —C(O)O— or —C(O)N(R ｄ Alkylene groups having Z are more preferred. ３ When the A-side terminal of Q is a polyalkylene oxide chain, ａ represents a divalent hydrocarbon group other than an alkylene group, a divalent heterocyclic group, or —SO ２ -, -C(O)-, -Si(R ａ ) ２ -, -C(O)O-, -C(O)S-, -C(O)N(R ｄ ) -, -SO２ N (R ｄ )-, -C(O)N(R ｄ an alkylene group having —C(O)O—, or —SO ２ N (R ｄ An alkylene group having —C(O)— is preferred, and —C(O)— is more preferred. ３ When the A-terminal of Q is a divalent linear organo(poly)siloxane residue, ａ represents a divalent hydrocarbon group other than an alkylene group, a divalent heterocyclic group, —O—, —S—, —SO ２ -, -N(R ｄ )-, -C(O)-, -Si(R ａ ) ２ -, -OC(O)-, -C(O)O-, -C(O)S-, -C(O)N(R ｄ ) -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ ) -, -N(R ｄ )C(O)O-, -OC(O)N(R ｄ ) -, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -C(O)N(R ｄ an alkylene group having —N(R ｄ )C(O)-, an alkylene group having —OC(O)N(R ｄ an alkylene group having —OC(O)—, an alkylene group having —C(O)O—, an alkylene group having —C(O)S—, an alkylene group having —N(R ｄ an alkylene group having —N(R ｄ )C(O)N(R ｄ )- or -SO ２ N (R ｄ )-containing alkylene groups are preferred.

[0400] In formula (3-1A), X ３１is a single bond, an alkylene group, a carbon atom, a nitrogen atom, a silicon atom, a divalent to octavalent organo(poly)siloxane residue, or a group having a (h+i+1)-valent ring. ａ When is a single bond, X ３１ Z ３ The terminal on the side bonding to X is not an alkylene group, a polyalkylene oxide chain, or a divalent organo(poly)siloxane residue. ３１ The terminal of the alkylene group may be any of an alkylene group, a polyalkylene oxide chain, and a divalent organo(poly)siloxane residue.

[0401] In formula (3-1A), Q ｂ is a single bond or a divalent linking group. ａ and X ３１ If is a single bond, Q ｂ Z ３ The terminal on the side bonding to Q is not an alkylene group, a polyalkylene oxide chain, or a divalent organo(poly)siloxane residue. ｂ The terminal of the alkylene group may be any of an alkylene group, a polyalkylene oxide chain, and a divalent organo(poly)siloxane residue.

[0402] In formula (3-1A), Q ａ , X ３１ , and Q ｂ is a single bond, [Si(R ２ ) ｎ L ３－ｎ ] is Z ３ directly bonded to Z ３ is an alkylene chain.

[0403] In formula (3-1B), Q ｃ is a single bond or a divalent linking group. ｃ Z ３ The terminal on the side bonding to is not an alkylene group, a polyalkylene oxide chain, or a divalent organo(poly)siloxane residue.

[0404] As the group (3-1A), groups (3-1A-1) to (3-1A-7) are preferred. However, Z ３The terminal on the side bonding to is not an alkylene group, a polyalkylene oxide chain, or a divalent organo(poly)siloxane residue.

[0405] In the group (3-1A-1), Z ３ When the A-side terminal of X is an alkylene chain, ３２ is -O-, -S-, -N(R ｄ )-, -C(O)-, -C(O)O-, -C(O)S-, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ )-,-OC(O)N(R ｄ )- or -C(O)N(R ｄ )- is preferred, and —O—, —S—, —N(R ｄ )-, -C(O)O-, -C(O)S-, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ )-,-OC(O)N(R ｄ )-, or -C(O)N(R ｄ )- is more preferred, and —C(O)O— or —N(R ｄ )C(O)- is more preferred. ３ When the A-side terminal of X is a polyalkylene oxide chain, ３２ is -C(O)-, -C(O)O-, -C(O)S-, -SO ２ N (R ｄ )-, or -C(O)N(R ｄ )- is preferred, and —C(O)- is more preferred. ３ When the A-side terminal of X is a divalent linear organo(poly)siloxane residue, ３２ is -O-, -S-, -N(R ｄ )-, -C(O)-, -C(O)O-, -C(O)S-, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(Rｄ )-,-OC(O)N(R ｄ )-, or -C(O)N(R ｄ )- is preferred, and -O- is more preferred.

[0406] Z ３ When the A-side terminal of is an alkylene chain, s1 is 0, and Q ｂ１ is a single bond, or s1 is 1 and Q ｂ１ is preferably an alkylene group having 2 to 6 carbon atoms. ３ When the A-side terminal of is a polyalkylene oxide chain, s1 is 1, and Q ｂ１ is preferably an alkylene group having 2 to 6 carbon atoms. ３ When the A-side terminal of is a divalent chain organo(poly)siloxane residue, s1 is 1, and Q ｂ１ is preferably a single bond.

[0407] In the group (3-1A-2), Z ３ When the A-side terminal of X is an alkylene chain or a divalent linear organo(poly)siloxane residue, ３３ is -O-, -S-, -N(R ｄ )-, -C(O)-, -C(O)O-, -C(O)S-, -SO ２ N (R ｄ ) -, -N(R ｄ ) SO ２ -, -N(R ｄ )C(O)-,-N(R ｄ )C(O)N(R ｄ )-,-OC(O)N(R ｄ )- or -C(O)N(R ｄ )- is preferred. ３ When the A-side terminal of X is a polyalkylene oxide chain, ３３ is -C(O)O-, -C(O)S-, -SO ２ N (R ｄ )-, or -C(O)N(R ｄ )- is preferred.

[0408] A in formula (3A) may be any of groups (g2-1) to (g2-7).

[0409] However, in formulas (g2-1) to (g2-7), A １ Side is Z ３ and Q ２２ , Q ２３ , Q ２４ , Q ２５ or Q ２６ The side is [-Si(R ２ ) ｎ L ３－ｎ ] and combine.

[0410] Other embodiments of A include groups (g2-8) to (g2-14).

[0411] However, in formulas (g2-8) to (g2-14), A １ Side is Z ３ and binds to G １ The side is [-Si(R ２ ) ｎ L ３－ｎ ] and combine.

[0412] Specific examples of compound (3) include the following compounds: In the following formula, n10 is a number of 1 or more, and is preferably a number from 1 to 60, and may be a number from 3 to 50, a number from 5 to 30, or a number from 7 to 25.

[0413]

[0414] (Compounds (4A) and (4B)) In compounds (4A) and (4B), X Ａ are each independently -(CH ２ ) ｓ７ -O-(CH ２ ) ｔ７ -, -(CH ２ ) ｓ７ -CONR ５４ - (CH ２ ) ｔ７ -, -(CH ２ ) ｓ７ -O-(CH ２ ) ｕ７ -CO-, or -(CH ２ ) ｓ７ -O-(CH ２ ) ｕ７ -CONR ５４ - (CH ２ )ｔ７ It is more preferable that -.

[0415] R ５４ are each independently a hydrogen atom, a phenyl group, an alkyl group having 1 to 6 carbon atoms, or an oxyalkylene-containing group having 1 to 10 carbon atoms; s7 is an integer of 1 to 20; t7 is an integer of 1 to 20; and u7 is an integer of 1 to 20.

[0416] X Ａ are each independently a group represented by the following formula (W6): ａ are each independently a single bond or a divalent organic group.

[0417]

[0418] Specific examples of the compound (4A) include the following compounds: (CH ３ ) ３ Si-(OSi(CH ３ ) ２ ) １９ - (CH ２ ) １０ -CONH-CH ２ C{CH ２ CH ２ CH ２ Si(OCH ３ ) ３} ３

[0419] (Compound (5)) When the surface treatment agent of the present disclosure contains compound (5), it is preferable that the surface treatment agent of the present disclosure further contains a metal compound.

[0420] The metal compound is preferably a compound represented by the following formula (M6a) or (M6b).

[0421]

[0422] In formula (M6a), R ｋ１ represents a siloxane skeleton-containing group, a hydrocarbon chain-containing group, or a hydrolyzable group; ｋ１ each independently represents a hydrolyzable group. ｋ２represents a siloxane skeleton-containing group, a hydrocarbon chain-containing group, or a hydrolyzable group. ｋ１ and X ｋ１ The number of elements in the siloxane skeleton-containing group is (R ａ９ ) ３ Si-Z-(Si(R ｓ１ ) ２ -O-) ｎ９ The number of elements in the trialkylsilyl group-containing molecular chain represented by -Y- is less than the number of elements in the trialkylsilyl group-containing molecular chain represented by R ｋ１ and X ｋ１ The number of carbon atoms in the longest linear hydrocarbon chain contained in the hydrocarbon chain-containing group in the compound (5) is ａ９ ) ３ Si-Z-(Si(R ｓ１ ) ２ -O-) ｎ９ The number of elements is less than the number of elements in the trialkylsilyl group-containing molecular chain represented by -Y-. ｋ１ and X ｋ２ is a siloxane skeleton-containing group or a hydrocarbon chain-containing group, R ｋ１ and X ｋ２ may be the same or different. ｋ２ When is a hydrolyzable group, X ｋ２ and X ｋ１ may be the same or different. ｋ１ and X ｋ２ may be the same or different. ４ represents a trivalent or tetravalent metal atom capable of forming a metal alkoxide. ４ represents an integer of 0 or 1 depending on the

[0423]

[0424] In formula (M6b), R ｋ３ represents a hydrolyzable silane oligomer residue, and X ｋ３ represents a hydrolyzable group, a fluorine-containing alkyl group having 1 to 4 carbon atoms, or an alkyl group having 1 to 4 carbon atoms.

[0425] Specific examples of compound (5) include the following compounds: In the following formula, n10 is a number of 1 or more, and is preferably a number from 1 to 60, and may be a number from 3 to 50, a number from 5 to 30, or a number from 7 to 25.

[0426]

[0427] <Liquid Medium> The surface treatment agent may contain a liquid medium. The liquid medium may be one type only, or two or more types.

[0428] The liquid medium is preferably an organic solvent. Examples of organic solvents include compounds consisting only of hydrogen atoms and carbon atoms, and compounds consisting only of hydrogen atoms, carbon atoms, and oxygen atoms. Specific examples include hydrocarbon organic solvents, ketone organic solvents, ether organic solvents, ester organic solvents, glycol organic solvents, and alcohol organic solvents. Specific examples of hydrocarbon organic solvents include pentane, hexane, heptane, octane, hexadecane, isohexane, isooctane, isononane, cycloheptane, cyclohexane, bicyclohexyl, benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, o-diethylbenzene, m-diethylbenzene, p-diethylbenzene, n-butylbenzene, sec-butylbenzene, and tert-butylbenzene. Specific examples of ketone-based organic solvents include acetone, methyl ethyl ketone, methyl isobutyl ketone, diisobutyl ketone, cyclohexanone, 2-heptanone, 4-heptanone, 3,5,5-trimethyl-2-cyclohexen-1-one, 3,3,5-trimethylcyclohexanone, and isophorone.Specific examples of ether-based organic solvents include diethyl ether, cyclopentyl methyl ether, tetrahydrofuran, and 1,4-dioxane.Specific examples of the ester-based organic solvent include methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, tert-butyl acetate, amyl acetate, isoamyl acetate, ethyl 3-ethoxypropionate, ethyl lactate, ethylene glycol monobutyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, dipropylene glycol methyl ether acetate, 3-methoxy-3-methylbutyl acetate, 3-methoxybutyl acetate, propylene glycol monomethyl acetate, propylene glycol dimethyl acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monomethyl ether acetate, diethylene glycol Cholesterol monoethyl ether acetate, cyclohexanol acetate, propylene glycol diacetate, propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether propionate, propylene glycol monoethyl ether acetate, propylene glycol monobutyl ether acetate, propylene glycol monopropyl ether acetate, dipropylene glycol methyl ether acetate, 1,3-butylene glycol diacetate, 1,4-butanediol diacetate, 1,3-butylene glycol diacetate, 1,6-hexanediol diacetate, γ-butyrolactone, triacetin, and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate.Specific examples of glycol-based organic solvents include ethylene glycol, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, tetraethylene glycol monobutyl ether, ethylene glycol monohexyl ether, diethylene glycol monohexyl ether, ethylene glycol mono-2-ethylhexyl ether, diethylene glycol mono-2-ethylhexyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol monopropyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monoethyl ether, ethylene glycol mono-tert-butyl ether, ethylene glycol monopropyl ether, ethylene glycol monomethyl ether, diethylene glycol monoisopropyl ether, diethylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monobutyl ether, and dipropylene glycol monopropyl ether. Examples of the glycol monopropyl ether include dipropylene glycol monomethyl ether, tripropylene glycol monobutyl ether, tripropylene glycol monomethyl ether, propylene glycol monophenyl ether, 1,3-butylene glycol, propylene glycol n-propyl ether, propylene glycol n-butyl ether, diethylene glycol monoethyl ether, dipropylene glycol n-propyl ether, dipropylene glycol n-butyl ether, tripropylene glycol methyl ether, tripropylene glycol n-butyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, diethylene glycol diethyl ether, diethylene glycol dimethyl ether, dipropylene glycol dimethyl ether, diethylene glycol dibutyl ether, tetraethylene glycol dimethyl ether, dipropylene glycol dimethyl ether pentane, triethylene glycol dimethyl ether, and polyethylene glycol dimethyl ether.Specific examples of alcohol-based organic solvents include methanol, ethanol, 1-propanol, isopropyl alcohol, n-butanol, diacetone alcohol, isobutanol, sec-butanol, tert-butanol, pentanol, 3-methyl-1,3-butanediol, 1,3-butanediol, 1,3-butylene glycol, octanediol, 2,4-diethylpentanediol, butylethylpropanediol, 2-methyl-1,3-propanediol, 4-hydroxy-4-methyl-2-pentanone, 2-ethyl-1-hexanol, 3,5,5-trimethyl-1-hexanol, isodecanol, isotridecanol, 3-methoxy-3-methyl-1-butanol, 2-methoxybutanol, 3-methoxybutanol, cyclohexanol, furfuryl alcohol, tetrahydrofurfuryl alcohol, benzyl alcohol, and methylcyclohexanol.

[0429] Examples of the organic solvent include halogen-based organic solvents, nitrogen-containing compounds, sulfur-containing compounds, siloxane compounds, and fluorine-containing organic solvents.

[0430] Specific examples of halogen-based organic solvents include dichloromethane, chloroform, carbon tetrachloride, dichloroethane, chlorobenzene, o-chlorotoluene, m-chlorotoluene, p-chlorotoluene, m-dichlorobenzene, and 1,2,3-trichloropropane.

[0431] Examples of the nitrogen-containing compound include nitrobenzene, acetonitrile, benzonitrile, N,N-dimethylformamide, N,N-dimethylacetamide, N-methylpyrrolidone, and 1,3-dimethyl-2-imidazolidinone.

[0432] Examples of sulfur-containing compounds include carbon disulfide and dimethyl sulfoxide.

[0433] Examples of the siloxane compound include hexamethyldisiloxane, hexaethyldisiloxane, octamethyltrisiloxane, octaethyltrisiloxane, hexamethylcyclotrisiloxane, hexaethylcyclotrisiloxane, octamethylcyclotetrasiloxane, octaethylcyclotetrasiloxane, and decamethyltetrasiloxane.

[0434] Examples of the fluorine-containing organic solvent include polyfluoroaromatic hydrocarbons (e.g., 1,3-bis(trifluoromethyl)benzene); polyfluoroaliphatic hydrocarbons (e.g., C ６ F １３ CH ２ CH ３ (e.g., Asahiklin (registered trademark) AC-6000 manufactured by AGC Corporation), 1,1,2,2,3,3,4-heptafluorocyclopentane (e.g., Zeorora (registered trademark) H manufactured by Zeon Corporation); hydrofluoroethers (HFEs) (e.g., perfluoropropyl methyl ether (C ３ F ７ OCH ３ ) (e.g., Novec™ 7000 manufactured by Sumitomo 3M Limited), perfluorobutyl methyl ether (C ４ F ９ OCH ３ ) (e.g., Novec (trademark) 7100 manufactured by Sumitomo 3M Limited), perfluorobutyl ethyl ether (C ４ F ９ O.C. ２ H ５ ) (e.g., Novec (trademark) 7200 manufactured by Sumitomo 3M Limited), perfluorohexyl methyl ether (C ２ F ５ CF (OCH ３ ) C ３ F ７ ) (e.g., Novec™ 7300 manufactured by Sumitomo 3M Limited) and other alkyl perfluoroalkyl ethers (the perfluoroalkyl group and the alkyl group may be linear or branched), CF ３ CH ２ OCF ２ CHF ２(e.g., Asahiklin (registered trademark) AE-3000 manufactured by AGC Corporation); and hydrofluoroolefins (HFOs) (e.g., 1-chloro-2,3,3-trifluoro-1-propene (HCFO-1233yd) (e.g., Amorea (registered trademark) AS-300 manufactured by AGC Corporation), Opteon (registered trademark) SF01, SF05, SF10, SF30, SF33, SF70, SF79, SF80 manufactured by Chemours).

[0435] The content of the liquid medium is preferably 50 to 99.999 mass%, more preferably 80 to 99.99 mass%, and even more preferably 90 to 99.9 mass%, based on the total amount of the surface treatment agent. In the case of a surface treatment agent used in a wet coating method, the content of the liquid medium may be 90 to 99.99 mass%, 95 to 99.98 mass%, 97 to 99.97 mass%, or 98 to 99.95 mass%, based on the total amount of the surface treatment agent.

[0436] <Other Components> In addition to the liquid medium, the surface treatment agent may contain other components within the scope that does not impair the effects of the present disclosure. Examples of other components include known additives such as acid catalysts and basic catalysts that promote the hydrolysis and condensation reaction of reactive silyl groups.

[0437] The catalyst may be any appropriate acid or base, transition metal (e.g., Ti, Ni, Sn, Zr, Al, B, etc.), sulfur-containing compounds having an unshared electron pair in their molecular structure, nitrogen-containing compounds (e.g., sulfoxide compounds, aliphatic amine compounds, aromatic amine compounds, phosphoric acid amide compounds, amide compounds, urea compounds), etc. Examples of acid catalysts include acetic acid, formic acid, trifluoroacetic acid, hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, sulfonic acid, methanesulfonic acid, and p-toluenesulfonic acid. Examples of base catalysts include ammonia, sodium hydroxide, potassium hydroxide, and organic amines such as triethylamine and diethylamine.

[0438] Other components also include metal compounds having a hydrolyzable group (hereinafter, metal compounds having a hydrolyzable group are also referred to as "specific metal compounds"). When the surface treatment agent contains a specific metal compound, the slip properties and antifouling properties of the surface treatment layer can be further improved. Examples of the specific metal compounds include those represented by the following formulae (M1) to (M3).

[0439] M (X ｂ１ ) ｍ１１ (X ｂ２ ) ｍ１２ (X ｂ３ ) ｍ１３ ... (M1) Si (X ｂ４ ) (X ｂ５ ) ３ ... (M2) (X ｂ６ ) ３ Si-(Y ｂ１ )-Si(X ｂ７ ) ３ …(M3)

[0440] In formula (M1), M represents a trivalent or tetravalent metal atom. ｂ１ each independently represents a hydrolyzable group. ｂ２ each independently represents a siloxane skeleton-containing group. ｂ３ each independently represents a hydrocarbon chain-containing group, m11 is an integer of 2 to 4, m12 and m13 are each independently an integer of 0 to 2, when M is a trivalent metal atom, m11 + m12 + m13 is 3, and when M is a tetravalent metal atom, m11 + m12 + m13 is 4.

[0441] In formula (M2), X ｂ４ represents a hydrolyzable silane oligomer residue. ｂ５ each independently represents a hydrolyzable group or an alkyl group having 1 to 4 carbon atoms.

[0442] In formula (M3), X ｂ６ and X ｂ７ each independently represents a hydrolyzable group or a hydroxyl group. ｂ１ represents a divalent organic group.

[0443] In formula (M1), the metal represented by M also includes semimetals such as Si and Ge. M is preferably a trivalent metal or a tetravalent metal, more preferably Al, Fe, In, Hf, Si, Ti, Sn, or Zr, still more preferably Al, Si, Ti, or Zr, and particularly preferably Si.

[0444] In formula (M1), X ｂ１ The hydrolyzable group represented by the formula (I) is the reactive silyl group represented by the formula (I). ２ ) ｎ L ３－ｎ Examples of the hydrolyzable group include the same as the hydrolyzable group represented by L in the formula (1).

[0445] X ｂ２ The siloxane skeleton-containing group represented by the formula (I) has a siloxane unit (—Si—O—) and may be linear or branched. Examples of the siloxane unit include a dialkylsilyloxy group, such as a dimethylsilyloxy group or a diethylsilyloxy group. The number of repeating siloxane units in the siloxane skeleton-containing group is 1 or more, preferably 1 to 5, more preferably 1 to 4, and even more preferably 1 to 3. The siloxane skeleton-containing group may contain a divalent hydrocarbon group as part of the siloxane skeleton. Specifically, some oxygen atoms in the siloxane skeleton may be replaced with a divalent hydrocarbon group. Examples of the divalent hydrocarbon group include alkylene groups such as methylene, ethylene, propylene, and butylene. A hydrolyzable group, a hydrocarbon group (preferably an alkyl group), or the like may be bonded to the terminal silicon atom of the siloxane skeleton-containing group. The number of elements in the siloxane skeleton-containing group is preferably 100 or less, more preferably 50 or less, and even more preferably 30 or less. The number of elements is preferably 10 or more. Examples of the siloxane skeleton-containing group include: ＊ -(O-Si(CH ３ ) ２ ) ｎ CH ３ In this case, n is an integer of 1 to 5, and * represents a bonding site with an adjacent atom.

[0446] X ｂ３The hydrocarbon chain-containing group represented by the formula (I) may be a group consisting of only a hydrocarbon chain, or may be a group having an etheric oxygen atom between carbon atoms in the hydrocarbon chain. The hydrocarbon chain may be a straight chain or a branched chain, with a straight chain being preferred. The hydrocarbon chain may be a saturated hydrocarbon chain or an unsaturated hydrocarbon chain, with a saturated hydrocarbon chain being preferred. The number of carbon atoms in the hydrocarbon chain-containing group is preferably 1 to 3, more preferably 1 to 2, and even more preferably 1. The hydrocarbon chain-containing group is preferably an alkyl group, and more preferably a methyl group, an ethyl group, or a propyl group.

[0447] Preferably, m1 is 3 or 4.

[0448] As the compound represented by formula (M1), compounds represented by the following formulas (M1-1) to (M1-5) in which M is Si are preferred, and the compound represented by formula (M1-1) is more preferred. As the compound represented by formula (M1-1), tetraethoxysilane, tetramethoxysilane, and triethoxymethylsilane are preferred.

[0449] Si(X ｂ１ ) ４ ... (M1-1) CH ３ -Si(X ｂ１ ) ３ 　 …(M1-2) C ２ H ５ -Si(X ｂ１ ) ３ ...(M1-3) n-C ３ H ７ -Si(X ｂ１ ) ３ ...(M1-4) (CH ３ ) ２ CH—Si(X ｂ１ ) ３ …(M1-5)

[0450] In formula (M2), X ｂ４The number of silicon atoms contained in the hydrolyzable silane oligomer residue represented by the formula (I) is preferably 3 or more, more preferably 5 or more, and even more preferably 7 or more. The number of silicon atoms is preferably 15 or less, more preferably 13 or less, and even more preferably 10 or less. The hydrolyzable silane oligomer residue may have an alkoxy group bonded to a silicon atom. Examples of the alkoxy group include a methoxy group, an ethoxy group, a propoxy group, and a butoxy group, with a methoxy group and an ethoxy group being preferred. The hydrolyzable silane oligomer residue may have one or more of these alkoxy groups, and preferably has one type. Examples of the hydrolyzable silane oligomer residue include (C ２ H ５ O) ３ Si-(OSi(OC) ２ H ５ ) ２ ) ４ O- ＊ Here, * represents a bonding site with an adjacent atom.

[0451] In formula (M2), X ｂ５ The hydrolyzable group represented by the formula (I) is the reactive silyl group represented by the formula (I). ２ ) ｎ L ３－ｎ Examples of the hydrolyzable group include the same as the hydrolyzable group represented by L in the formula (1), a cyano group, a hydrogen atom, and an allyl group, and an alkoxy group or an isocyanato group is preferred. The alkoxy group is preferably an alkoxy group having 1 to 4 carbon atoms. X ｂ５ As the group, a hydrolyzable group is preferred.

[0452] The compound represented by formula (M2) includes (H ５ C ２ O) ３ -Si-(OSi(OC) ２ H ５ ) ２ ) ４ O.C. ２ H ５ etc.

[0453] The compound represented by formula (M3) is a compound having reactive silyl groups at both ends of a divalent organic group, i.e., a bissilane. ｂ６and X ｂ７ Examples of the hydrolyzable group represented by formula (M3) include an alkoxy group, an acyloxy group, a ketoxime group, an alkenyloxy group, an amino group, an aminoxy group, an amide group, an isocyanato group, and a halogen atom, and an alkoxy group and an isocyanato group are preferred. As the alkoxy group, an alkoxy group having 1 to 4 carbon atoms is preferred, and a methoxy group and an ethoxy group are more preferred. In formula (M3), X ｂ６ and X ｂ７ may be the same group or different groups. ｂ６ and X ｂ７ are preferably the same group.

[0454] In formula (M3), Y ｂ１ is a divalent organic group that connects the reactive silyl groups at both ends. ｂ１ The number of carbon atoms in Y is preferably 1 to 8, and more preferably 1 to 3. ｂ１ Examples of the alkylene group include an alkylene group, a phenylene group, and an alkylene group having an etheric oxygen atom between carbon atoms. ２ CH ２ -, -CH ２ CH ２ CH ２ -, -CH ２ CH ２ CH ２ CH ２ -, -CH ２ CH ２ CH ２ CH ２ CH ２ -, -CH ２ CH ２ CH ２ CH ２ CH ２ CH ２ -, -CH ２ C(CH ３ ) ２ CH ２ -, -C(CH ３ ) ２ CH ２ CH ２ C(CH ３ ) ２ -, -CH ２ CH ２ OCH２ CH ２ -, -CH ２ CH ２ CH ２ OCH ２ CH ２ CH ２ -, -CH(CH ３ ) CH ２ OCH ２ CH (CH ３ ) -, -C ６ H ４ - are listed.

[0455] The compound represented by formula (M3) includes (CH ３ O) ３ Si(CH ２ ) ２ Si(OCH ３ ) ３ , (C ２ H ５ O) ３ Si(CH ２ ) ２ Si(OC ２ H ５ ) ３ , (OCN) ３ Si(CH ２ ) ２ Si(NCO) ３ , Cl ３ Si(CH ２ ) ２ SiCl ３ , (CH ３ O) ３ Si(CH ２ ) ６ Si(OCH ３ ) ３ , (C ２ H ５ O) ３ Si(CH ２ ) ６ Si(OC ２ H ５ ) ３ Examples include:

[0456] The content of other components that may be contained in the surface treatment agent is preferably 10% by mass or less, more preferably 1% by mass or less, based on the total amount of the surface treatment agent. When the surface treatment agent contains a specific metal compound, the content of the specific metal compound is preferably 0.01 to 30% by mass, more preferably 0.01 to 10% by mass, and even more preferably 0.05 to 5% by mass, based on the total amount of the surface treatment agent.

[0457] The total content of the specific silane compound and other components (hereinafter also referred to as "solid content concentration") is preferably 0.001 to 40 mass%, more preferably 0.01 to 20 mass%, and even more preferably 0.1 to 10 mass%, relative to the total amount of the surface treatment agent. The solid content concentration of the surface treatment agent is a value calculated from the mass before heating and the mass after heating for 4 hours in a convection dryer at 120°C.

[0458] Surface treatments include dry coating and wet coating methods.

[0459] Examples of dry coating methods include vacuum deposition, CVD, PVD, and sputtering. Vacuum deposition is preferred as a dry coating method from the viewpoints of suppressing decomposition of the compound and simplifying the equipment. For vacuum deposition, a pellet-shaped substance obtained by impregnating a metal porous body such as iron or steel with the compound of the present disclosure may be used. A composition containing the compound of the present disclosure and a liquid medium may be impregnated into a metal porous body such as iron or steel, and the liquid medium may be dried to obtain a pellet-shaped substance impregnated with the compound of the present disclosure.

[0460] Examples of wet coating methods include spin coating, wipe coating, spray coating, squeegee coating, dip coating, die coating, inkjet coating, flow coating, roll coating, casting, Langmuir-Blodgett coating, and gravure coating.

[0461] To improve the abrasion resistance of the surface-treated layer, if necessary, an operation may be performed to promote the reaction between the compound having a chain organo(poly)siloxane residue and a reactive silyl group and the underlayer. Examples of such an operation include heating, humidification, and light irradiation. For example, a substrate on which a surface-treated layer has been formed can be heated in a moist atmosphere to promote reactions such as the hydrolysis of hydrolyzable groups, the reaction of hydroxyl groups on the surface of the underlayer with silanol groups, and the formation of siloxane bonds through condensation reactions of silanol groups. After surface treatment, compounds in the surface-treated layer that are not chemically bonded to other compounds or the underlayer may be removed as needed. Examples of removal methods include pouring a solvent over the surface-treated layer or wiping with a cloth soaked in the solvent.

[0462] [Underlayer-forming composition] The underlayer-forming composition of the present disclosure is a composition used to form an underlayer in an optical article having a substrate, an underlayer, and a surface-treated layer containing a compound having a chain group and a reactive silyl group, arranged in this order. The underlayer-forming composition contains a silane compound other than silica. In one aspect, the underlayer-forming composition of the present disclosure is preferably a composition used to form an underlayer in an optical article having a substrate, an underlayer, and a surface-treated layer containing a compound having a chain organo(poly)siloxane residue and a reactive silyl group, arranged in this order.

[0463] The composition for forming a base layer according to the present disclosure can be used to form a base layer in the optical article according to the present disclosure. By forming a base layer using the composition for forming a base layer according to the present disclosure, the abrasion resistance of the surface treatment layer is excellent.

[0464] A preferred embodiment of the optical article having a substrate, an underlayer, and a surface treatment layer containing a compound having a chain group and a reactive silyl group, arranged in this order, is as described above. Also, a preferred embodiment of the composition for forming the underlayer is as described above.

[0465] [Surface Treatment Set] The surface treatment set of the present disclosure includes a base layer-forming composition used to form a base layer in an optical article having a substrate, a base layer, and a surface treatment layer arranged in this order, and a surface treatment agent used to form the surface treatment layer. The base layer-forming composition includes a silane compound other than silica, and the surface treatment agent includes a compound having a chain group and a reactive silyl group. In one embodiment, it is preferred that the base layer-forming composition includes a silane compound other than silica, and the surface treatment agent includes a compound having a chain organo(poly)siloxane residue and a reactive silyl group.

[0466] The surface treatment set of the present disclosure can be used to form the base layer and the surface treatment layer of the optical article of the present disclosure. By forming the base layer and the surface treatment layer using the surface treatment set of the present disclosure, the surface treatment layer has excellent abrasion resistance.

[0467] The preferred embodiments of the optical article having the substrate, the underlayer, and the surface treatment layer containing the compound having a chain group and a reactive silyl group, arranged in this order, are as described above. The preferred embodiments of the underlayer-forming composition and the surface treatment agent are as described above.

[0468] The present invention will be explained in more detail below using examples, but the present invention is not limited to these examples.

[0469] <Preparation of composition for forming base layer> In a glass container equipped with a stirrer and a thermometer, compound A and compound B were mixed to a total of 6% by mass, calculated as Si, pure water to 11.3% by mass, a 10% by mass aqueous solution of nitric acid to 0.54% by mass, and the remainder as a solvent (product name "Solmix AP-11" (manufactured by Nippon Alcohol Sales Co., Ltd.)) so that the total was 100% by mass, with ratio A and ratio B described below being the ratios shown in Table 1, and the mixture was stirred at 60° C. for 1 hour. Next, Solmix AP-11 was further added to obtain a composition for forming a base layer with a Si-equivalent concentration of 0.4% by mass.

[0470] Details of Compound A and Compound B are as follows.

[0471] -Compound A- ・TEOS:Si(OEt) ４, tetraethoxysilane IS:Si(NCO) ４ , tetraisocyanatosilane -Compound B- BTM: (EtO) ３ Si—CH ２ -Si(OEt) ３ , bistriethoxysilylmethane BTE: (EtO) ３ Si—CH ２ CH ２ -Si(OEt) ３ , bistriethoxysilylethane MTMS:CH ３ -Si(OEt) ３ , methyltrimethoxysilane MIS:CH ３ -Si(NCO) ３ , methyltriisocyanatosilane

[0472] <Preparation of Surface Treatment Agent> In a polypropylene container equipped with a stirrer and a thermometer, 0.05% by mass of a compound shown in Table 1 was added to 99.5% by mass of Solmix AP-11, and the mixture was stirred at 25°C for 30 minutes to obtain a surface treatment agent.

[0473] Details of the compounds contained in the surface treatment agent are as follows:

[0474] (Preparation of Compound 11) X-22-1968 (manufactured by Shin-Etsu Chemical Co., Ltd.) was used as Compound 11. Compound 11 is a compound containing a chain organo(poly)siloxane residue and a reactive silyl group.

[0475] (Synthesis of Compound 12) Compound 12 was synthesized with reference to Example 1 of WO 2023 / 017830. In compound 12, the average value of n10 was 19.

[0476]

[0477] (Synthesis of Compound 13) Compound 13 was synthesized with reference to Synthesis Example 1 of JP 2017-119849 A. In Compound 13, the average value of n10 was 24.

[0478]

[0479] (Synthesis of Compound 14) Compound 14 was synthesized with reference to Synthesis Example 4 of WO 2016-068138.

[0480]

[0481] (Synthesis of Compound 15) Synthesis of Compound 15A THF (tetrahydrofuran, 101 g) was added to hexamethylcyclotrisiloxane (65 g) and stirred at 25°C until dissolved. Next, a solution of lithium trimethylsilanol salt (5.1 g) suspended in THF (20 g) was added, and the mixture was stirred at 25°C for 2 hours. Next, chlorodimethylsilane (10.5 g) was added, and the mixture was stirred at 25°C for 1 hour. After extraction with hexane and water, the solvent and low-boiling components were distilled off under reduced pressure, and flash column chromatography using silica gel (developing solvent: hexane / dichloromethane) was performed to obtain 25 g of Compound 15A. The average value of n10 in Compound 15A was 13. The structure of Compound 15A was confirmed by the following NMR data.

[0482]

[0483] １ H-NMR (400MHz, CDCl ３ ) δ: 4.63 (hept, J=2.8Hz, 1H), 0.21-0.08 (m, 6H), 0.07-0.12 (m, 87H).

[0484] Synthesis of Compound 15B Dichloromethane (20 g) and 9-bromo-1-nonene (1.0 g) were added to Compound 15A (2.0 g) and stirred at 25°C until homogeneous. Next, a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3% by mass, 4.1 mg) was added and stirred at 25°C for 2 hours. Next, low-boiling point components were distilled off under reduced pressure, and then flash column chromatography using silica gel (developing solvent: hexane / dichloromethane) was performed to obtain 1.6 g of Compound 15B. The average value of n10 in Compound 15B was 13. The structure of Compound 15B was confirmed by the following NMR data.

[0485]

[0486] １ H-NMR (400MHz, CDCl ３ ​​) δ: 3.41 (td, J=6.9, 1.9Hz, 2H), 1.99-1.76 (m, 2H), 1.49-1.09 (m, 12H), 0.61-0.42 (m, 2H), 0.33-0.24 (m, 93H).

[0487] Synthesis of Compound 15C To compound 15B (1.6 g), THF (20 g), allyl magnesium chloride solution (in THF, 2.0 M) (20 mL), and copper (II) chloride (0.02 g) were added, and the mixture was stirred at 50°C for 2 hours. Hydrochloric acid and hexane were added for extraction, and low-boiling point components were distilled off under reduced pressure. Then, flash column chromatography using silica gel (developing solvent: hexane / dichloromethane) was performed to obtain 1.3 g of compound 15C. In compound 15C, the average value of n10 was 13. The structure of compound 15C was confirmed by the following NMR data.

[0488]

[0489] １ H-NMR (400MHz, CDCl ３ ) δ: 5.95-5.59 (m, 1H), 5.12-4.75 (m, 2H), 2.13-1.89 (m, 2H), 1.64-0.84 (m, 16H), 0.67-0.36 (m, 2H), 0.30-0.41 (m, 93H).

[0490] Synthesis of Compound 15 Compound 15C (1.3 g) was dissolved in dichloromethane (10 g). Next, a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3 mass%, 4.1 mg), aniline (2.6 mg), and trimethoxysilane (0.60 g) were added, and the mixture was stirred at 50°C for 2 hours. The solvent was distilled off under reduced pressure, yielding 1.4 g of Compound 15. The average value of n10 in Compound 15 was 13. The structure of Compound 15 was confirmed by the following NMR data.

[0491]

[0492] １ H-NMR (400MHz, CDCl ３ ​​) δ: 3.57 (s, 9H), 1.98-0.95 (m, 21H), 0.72-0.61 (m, 2H), 0.52 (t, J = 7.7Hz, 2H), 0.26-0.22 (m, 93H).

[0493] (Synthesis of Compound 16) Compound 16 was synthesized with reference to the synthesis method of compound 15. In compound 16, the average value of n10 was 28.

[0494]

[0495] (Synthesis of Compound 17) Synthesis of Compound 17A Dichloromethane (20 g) and 18-bromo-1-octadecene (1.0 g) were added to Compound 15A (2.0 g) and stirred at 25°C until homogeneous. Next, a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3% by mass, 4.1 mg) was added and stirred at 25°C for 2 hours. After distilling off low-boiling components under reduced pressure, flash column chromatography using silica gel (developing solvent: hexane / dichloromethane) was performed to obtain 1.2 g of Compound 17A. The average value of n10 in Compound 17A was 13. The structure of Compound 17A was confirmed by the following NMR data.

[0496]

[0497] １ H-NMR (400MHz, CDCl ３ ) δ: 3.41 (t, J=6.9Hz, 2H), 1.85 (p, J=7.1Hz, 2H), 1.75-0.95 (m, 30H), 0.53 (s, 2H), 0.34-0.25 (m, 93H).

[0498] ​Synthesis of Compound 17B To compound 17A (1.2 g), THF (20 g), allyl magnesium chloride solution (in THF, 2.0 M) (20 mL), and copper (II) chloride (0.02 g) were added, and the mixture was stirred at 50°C for 2 hours. Hydrochloric acid and hexane were added for extraction, and low-boiling point components were distilled off under reduced pressure. Then, flash column chromatography using silica gel (developing solvent: hexane / dichloromethane) was performed to obtain 1.1 g of compound 17B. In compound 17B, the average value of n10 was 13. The structure of compound 17B was confirmed by the following NMR data.

[0499]

[0500] １ H-NMR (400MHz, CDCl ３ ) δ: 5.74 (ddt, J = 16.9, 10.2, 6.7Hz, 1H), 5.01-4.74 (m, 2H), 2.08-1.84 (m , 2H), 1.75-0.95 (m, 34H), 0.45 (dd, J=9.4, 5.7Hz, 2H) 0.34-0.25 (m, 93H).

[0501] Synthesis of Compound 17 Compound 2-2 (1.1 g) was dissolved in dichloromethane (10 g). Next, a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3 mass%, 4.1 mg), aniline (2.6 mg), and trimethoxysilane (0.60 g) were added, and the mixture was stirred at 50°C for 2 hours. The solvent was distilled off under reduced pressure, yielding 1.1 g of Compound 17. The average value of n10 in Compound 17 was 13. The structure of Compound 17 was confirmed by the following NMR data.

[0502]

[0503] １ H-NMR (400MHz, CDCl ３ ) δ: 3.50 (s, 9H), 1.75-0.95 (m, 38H), 0.62-0.54 (m, 2H), 0.45 (dd, J=9.4, 5.9Hz, 2H), 0.34-0.25 (m, 93H).

[0504] ​​(Synthesis of Compound 18) Compound 18 was synthesized with reference to Synthesis Example 9 in JP-A-2024-25757. In Compound 18, the average value of n10 was 59.

[0505]

[0506] (Synthesis of Compound 19) - Synthesis of Compound 19A Dichloromethane (100 g) and trichloroisocyanuric acid (14 g) were added to 1,1,1,3,5,5,5-heptamethyltrisiloxane (10 g) and stirred at 25°C for 3 hours. Next, the reaction solution was filtered to remove insoluble matter, and the filtrate was then distilled off to remove low-boiling components. Water (20 g), THF (40 g), and triethylamine (10 g) were added to the resulting crude liquid and stirred at 25°C for 2 hours. Hexane and water were added for extraction, and the low-boiling components were removed by distillation. The resulting crude liquid was purified by flash column chromatography using silica gel (developing solvent: hexane / ethyl acetate), yielding 8.3 g of Compound 19A. The structure of Compound 19A was confirmed by the following NMR data.

[0507]

[0508] １ H-NMR (400MHz, CDCl ３ ) δ: 2.41 (q, J = 7.2Hz, 1H), 0.20-0.21 (m, 21H).

[0509] ​Synthesis of Compound 19B THF (20 g) was added to compound 19A (2.0 g) and cooled to 0°C. A methyllithium solution (3.1 M in diethoxymethane) (2.7 mL) was then added and stirred at 25°C for 10 minutes. A solution of hexamethylcyclotrisiloxane (5.6 g) dissolved in THF (20 g) was then added and stirred at 25°C for 4 hours. Chlorodimethylsilane (2.0 g) was then added and stirred at 25°C for 1 hour. Hexane and water were added for extraction, and low-boiling components were removed by distillation. The resulting crude liquid was purified by flash column chromatography using silica gel (developing solvent: hexane / dichloromethane), yielding 4.3 g of compound 19B. The average value of n10 in compound 19B was 9. The structure of compound 19B was confirmed by the following NMR data.

[0510]

[0511] １ H-NMR (400MHz, CDCl ３ ) δ: 4.63 (p, J=2.8Hz, 1H), 0.11 (d, J=2.8Hz, 6H), 0.09-0.12 (m, 75H).

[0512] Synthesis of Compound 19C Dichloromethane (20 g) and 18-bromo-1-octadecene (0.75 g) were added to Compound 19B (2.3 g) and stirred until homogeneous. Next, a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3% by mass, 4.1 mg) was added and stirred at 25°C for 2 hours. After distilling off low-boiling components under reduced pressure, flash column chromatography using silica gel (developing solvent: hexane / dichloromethane) was performed to obtain 1.8 g of Compound 19C. The average value of n10 in Compound 19C was 9. The structure of Compound 19C was confirmed by the following NMR data.

[0513]

[0514] １ H-NMR (400MHz, CDCl ３ ​​) δ: 3.33 (t, J=6.9Hz, 2H), 1.78 (dt, J=14.5, 7.0Hz, 2H), 1.42-1.08 (m, 30H), 0.45 (t, J=7.7Hz, 2H), 0.09-0.12 (m, 81H).

[0515] Synthesis of Compound 19D To compound 19C (1.8 g), THF (20 g), allyl magnesium chloride solution (in THF, 2.0 M) (20 mL), and copper (II) chloride (0.02 g) were added, and the mixture was stirred at 50°C for 2 hours. Hydrochloric acid and hexane were added for extraction, and low-boiling components were distilled off under reduced pressure. Then, flash column chromatography using silica gel (developing solvent: hexane / dichloromethane) was performed to obtain 1.5 g of compound 19D. In compound 19D, the average value of n10 was 9. The structure of compound 19D was confirmed by the following NMR data.

[0516]

[0517] １ H-NMR (400MHz, CDCl ３ ) δ: 5.74 (ddt, J=17.0, 10.2, 6.7Hz, 1H), 5.01-4.76 (m, 2H), 2.07-1.87 (m, 2H) , 1.41-0.97 (m, 34H), 0.45 (dd, J=9.5, 5.9Hz, 2H), 0.09-0.12 (m, 81H).

[0518] Synthesis of Compound 19 Compound 19D (1.5 g) was dissolved in dichloromethane (10 g). Next, a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3 mass%, 4.1 mg), aniline (2.6 mg), and trimethoxysilane (0.60 g) were added, and the mixture was stirred at 50°C for 2 hours. The solvent was distilled off under reduced pressure, yielding 1.6 g of compound 19. In compound 19, the average value of n10 was 9. The structure of compound 19 was confirmed by the following NMR data.

[0519]

[0520] １ H-NMR (400MHz, CDCl ３ ​​) δ: 3.49 (s, 9H), 1.81-0.97 (m, 38H), 0.65-0.51 (m, 2H), 0.45 (dd, J=9.8, 5.3Hz, 2H), 0.09-0.12 (m, 81H).

[0521] (Synthesis of Compound 20) Compound 20 was synthesized with reference to Synthesis Example 40 in JP-A No. 2024-25757.

[0522]

[0523] (Synthesis of Compound 21) Compound 21 was synthesized with reference to Synthesis Example 26 in JP-A-2024-25757.

[0524]

[0525] (Synthesis of Compound 22) Synthesis of Compound 22A THF (40 g) and magnesium (0.9 g) were added to 18-bromo-1-octadecene (10 g) and the mixture was stirred at 60°C for 2 hours. The reaction solution was filtered to obtain 50 g of Compound 22A. The concentration of the product was confirmed to be 0.4 M by titration with 1,10-phenanthroline.

[0526]

[0527] Synthesis of Compound 22B THF (20 g) and magnesium (1.1 g) were added to 11-bromo-1-undecene (10 g) and the mixture was stirred at 60°C for 2 hours. The reaction solution was filtered to obtain 30 g of Compound 22B. The concentration of the product was confirmed to be 0.8 M by titration with 1,10-phenanthroline.

[0528]

[0529] Synthesis of Compound 22C THF (10 g), compound 22A (0.4 M) (20 mL), and copper(II) chloride (0.05 g) were added to compound 22B (1 g), and the mixture was stirred at 60°C for 24 hours. Hydrochloric acid and hexane were added for extraction, and low-boiling components were removed by distillation under reduced pressure. 0.4 g of compound 22C was obtained by flash column chromatography using 10% silver nitrate silica gel (developing solvent: hexane / dichloromethane). The structure of compound 22C was confirmed by the following NMR data.

[0530]

[0531] １ H-NMR (400MHz, CDCl ３ ) δ: 5.81 (ddt, J=16.9, 10.2, 6.7Hz, 1H), 5.22-4.68 (m, 2H), 2.21-1.85 (m, 2H), 1.54-1.00 (m, 64H), 0.50 (t, J=7.1Hz, 2H), 0.25- -0.19 (m, 15H).

[0532] Synthesis of Compound 22 To a solution of Compound 22C (0.4 g) in dichloromethane (10 g) was added a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3 mass%, 5 mg), aniline (3 mg), and trimethoxysilane (0.60 g), followed by stirring at 50°C for 2 hours. The solvent was removed by distillation under reduced pressure, yielding 0.5 g of Compound 22. The structure of Compound 22 was confirmed by the following NMR data.

[0533]

[0534] １ H-NMR (400MHz, CDCl ３ ) δ: 3.57 (s, 9H), 1.54-1.00 (m, 68H), 0.77-0.61 (m, 2H), 0.50 (t, J=7.6Hz, 2H), 0.25- -0.19 (m, 15H).

[0535] (Synthesis of Compound 23) Synthesis of Compound 23A Dichloromethane (10 g), 1,1,1,3,3-pentamethyldisiloxane (15 g), and a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3% by mass, 50 mg) were added to 18-bromo-1-octadecene (10 g), and the mixture was stirred at 25°C for 24 hours. After distilling off low-boiling components under reduced pressure, flash column chromatography using silica gel (developing solvent: hexane / dichloromethane) was performed to obtain 12 g of Compound 23A. The structure of Compound 23A was confirmed by the following NMR data.

[0536]

[0537] ​​​１ H-NMR (400MHz, CDCl ３ ) δ: 3.41 (t, J = 6.9Hz, 2H), 1.85 (p, J = 7.0Hz, 2H), 1.49-1.04 (m, 30H), 0.50 (t, J = 7.6Hz, 2H), 0.25- -0.19 (m, 15H)

[0538] Synthesis of Compound 23B THF (10 g), compound 22B (0.8 M) (10 mL), and copper(II) chloride (0.05 g) were added to compound 9-1 (1 g), and the mixture was stirred at 60°C for 24 hours. Hydrochloric acid and hexane were added for extraction, and low-boiling components were distilled off under reduced pressure. Then, flash column chromatography using 10% silver nitrate silica gel (developing solvent: hexane / dichloromethane) was performed to obtain 0.5 g of compound 10-2. The structure of compound 23B was confirmed by the following NMR data.

[0539]

[0540] １ H-NMR (400MHz, CDCl ３ ) δ: 5.81 (ddt, J=16.9, 10.1, 6.7Hz, 1H), 5.08-4.82 (m, 2H), 2.13-1.93 (m, 2H), 1.54-1.00 (m, 50H), 0.63-0.41 (m, 2H) 0.25- -0.19 (m, 15H).

[0541] Synthesis of Compound 23 To a solution of Compound 23B (0.5 g) dissolved in dichloromethane (10 g), a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3 mass%, 5 mg), aniline (3 mg), and trimethoxysilane (0.60 g) were added, and the mixture was stirred at 50°C for 2 hours. The solvent was distilled off under reduced pressure, yielding 0.6 g of Compound 23. The structure of Compound 23 was confirmed by the following NMR data.

[0542]

[0543] １ H-NMR (400MHz, CDCl ３ ​​) δ: 3.57 (s, 9H), 1.54-1.00 (m, 54H), 0.77-0.61 (m, 2H), 0.50 (t, J=7.3Hz, 2H), 0.25- -0.19 (m, 15H).

[0544] (Synthesis of Compound 24) Compound 24 was synthesized with reference to Synthesis Example 12 in JP-A No. 2024-25757.

[0545] (Synthesis of Compound 25) Compound 25 was synthesized with reference to Synthesis Example 9 in JP-A No. 2024-25757. In Compound 25, the average value of n10 was 59.

[0546]

[0547] [Production of Optical Articles] <Examples 1 to 33, 36 to 77> A glass substrate (water contact angle: 5 degrees, 100 mm x 100 mm) cleaned by plasma treatment was used. 2 mL of the above-described composition for forming an undercoat layer was applied to the surface of the glass substrate by spin coating, and dried at 25°C for 1 minute. Next, 0.0074 mL / cm of the surface treatment agent was applied to the dried film. ２ was applied by a spray coating method and heat-treated at 140°C for 30 minutes. Thereafter, the substrate was held in a thermo-hygrostat set at a temperature of 60°C and a relative humidity of 90% RH for 16 hours. The surface of the coating film formed by application of the surface treatment agent was wiped with a paper cloth impregnated with ethanol, thereby obtaining an optical article in which the substrate, the underlayer, and the surface treatment layer were arranged in this order.

[0548] Example 34 A glass substrate (water contact angle 5 degrees, 100 mm x 100 mm) that had been cleaned by plasma treatment was used. 0.0074 mL / cm of the surface treatment agent was applied to the surface of the glass substrate. ２ was applied by a spray coating method and heat-treated at 140°C for 30 minutes. Thereafter, the substrate was kept in a thermo-hygrostat set at a temperature of 60°C and a relative humidity of 90% RH for 16 hours. The surface of the surface treatment layer was wiped with a paper cloth soaked in ethanol to obtain an optical article in which the substrate and the surface treatment layer were disposed in this order.

[0549] Example 35 A glass substrate (water contact angle: 5 degrees, 100 mm x 100 mm) that had been cleaned by plasma treatment was used. A silicon oxide layer was formed on the surface of the glass substrate by the following method. 30 g of silicon oxide (manufactured by Canon Optron Inc.) was placed as a deposition material (deposition source) in a molybdenum boat in a vacuum deposition apparatus (VTR-350M manufactured by ULVAC Kiko Co., Ltd.), the glass substrate was placed in the vacuum deposition apparatus, and the interior of the vacuum deposition apparatus was heated to a temperature of 5 x 10 －３ The boat containing the silicon oxide was heated to 2,000°C and vacuum-deposited onto the glass substrate to form a silicon oxide layer with a thickness of 10 nm. Next, 0.0074 mL / cm of the surface treatment agent was applied to the dried film. ２ was applied by a spray coating method and heat-treated at 140°C for 30 minutes. The resulting product was then held in a thermo-hygrostat chamber set at a temperature of 60°C and a relative humidity of 90% RH for 16 hours. The surface of the surface treatment layer was wiped with a paper cloth impregnated with ethanol to obtain an optical article in which the substrate, silicon oxide layer, and surface treatment layer were disposed in this order.

[0550] <Initial Water Contact Angle> 2 μL of pure water was dropped onto the surface treatment layer of the optical article. The initial water contact angle was measured using a contact angle measuring device (product name "DM-500", manufactured by Kyowa Interface Science Co., Ltd.). The average value measured at five points on the surface treatment layer was taken as the water contact angle. The 2θ method was used to calculate the water contact angle. After each measurement, the article was treated with an ionizer and air blown.

[0551] <Abrasion Resistance> A Kanakin No. 3 indenter (bottom area: 100 mm) was attached to the surface of the surface treatment layer of the optical article. ２The abrasion test was conducted using a triple-type flat abrasion tester (product name "PA-300A", manufactured by Daiei Scientific Instruments Manufacturing Co., Ltd.) equipped with a 1,000 g load, a rotation speed of 60 rpm, and a stroke length of 40 mm. The abrasion test was conducted with the Kanakin wetted with 1 mL of JIS standard artificial sweat. The water contact angle was measured every 10 rubs. The method for measuring the water contact angle was the same as that for measuring the initial water contact angle. If the water contact angle was 90 degrees or greater, the abrasion test was conducted another 10 times, and when the water contact angle became less than 90 degrees, the abrasion test was terminated. The number of rubs at which it was confirmed that the water contact angle was 90 degrees or greater is shown in Table 1.

[0552] <Si-Ka Line Intensity of Surface Treatment Layer> A sapphire substrate with vapor-deposited silica was prepared. The Si-Ka line intensity 1 of the sapphire substrate with vapor-deposited silica was measured by X-ray fluorescence analysis. An underlayer was formed on the sapphire substrate with vapor-deposited silica by the same method as in the production of the above-mentioned optical article. The Si-Ka line intensity 2 of the underlayer formed on the sapphire substrate with vapor-deposited silica was measured by X-ray fluorescence analysis. The Si-Ka line intensity of the underlayer was calculated by subtracting Si-Ka line intensity 1 from Si-Ka line intensity 2. Furthermore, an underlayer was formed on the sapphire substrate with vapor-deposited silica by the same method as in the production of the above-mentioned optical article, and then a surface treatment layer was formed and the excess was removed. The Si-Ka line intensity 3 of the film after the excess was removed was measured by X-ray fluorescence analysis. The Si-Ka line intensity of the surface treatment layer was calculated by subtracting Si-Ka line intensity 2 from Si-Ka line intensity 3. The unit is kcps (kilocounts per second).

[0553] The evaluation results are shown in Tables 1 to 3. Examples 1 to 33 and 36 to 77 are working examples, and Examples 34 and 35 are comparative examples.

[0554] In Tables 1 and 2, the column for specific silane compound lists the formula to which the specific silane compound contained in the surface treatment agent corresponds, the number of Si atoms, and the number of atoms in the linking group. When the specific silane compound is a compound represented by formula (C), the number of Si atoms refers to the number of atoms in the group H Ｃ When the specific silane compound is a compound represented by formula (E), the number of Si atoms means the number of Si atoms contained in (B １１ ) ｕ１When the specific silane compound is a compound represented by formula (C), the number of atoms in the linking group means the number of Si atoms contained in A １１ When the specific silane compound is a compound represented by formula (E), the number of atoms in the linking group refers to the number of atoms contained in the main chain of A １３ This means the number of atoms contained in the main chain.

[0555]

[0556]

[0557]

[0558] As shown in Tables 1 to 3, the articles of Examples 1 to 33 and 36 to 77 were found to have superior wear resistance compared to the articles of Examples 34 and 35. In particular, Examples 2 to 4 had high Si—Ka strength and were also superior in wear resistance.

[0559] The optical article of the present disclosure has excellent abrasion resistance. Examples of the optical article include display devices such as touch panel displays and optical elements. For example, the optical article can be used for optical components such as car navigation systems, mobile phones, smartphones, digital cameras, digital video cameras, PDAs, portable audio players, car audio, game consoles, medical devices such as gastroscopes, copiers, PCs, displays (e.g., liquid crystal displays, organic EL displays, plasma displays, touch panel displays), touch panels, protective films, and anti-reflection films.

[0560] (Additional Notes) The present disclosure includes the following aspects. <1> An optical article comprising a substrate, an underlayer, and a surface treatment layer arranged in this order, wherein the underlayer is a layer formed using a composition for forming an underlayer containing a silane compound other than silica, and the surface treatment layer is a layer formed using a surface treatment agent containing a compound having a chain organo(poly)siloxane residue and a reactive silyl group. <2> The silane compound is a compound represented by the following formula (1A １ ) and a compound represented by the following formula (1A ２ The optical article according to <1>, comprising at least one compound A selected from the group consisting of compounds having a structure represented by SiX１ ４ …(1A １ ) -(SiH ２ NH) ｎ - ... (1A ２ ) Formula (1A １ ) Medium, X １ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group. ２ In the formula (2B), n is an integer that provides a number average molecular weight of the compound of 3,000 to 100,000. １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２ The optical article according to <2>, further comprising at least one compound selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D): ２０ Six ２ ３ …(2B １ ) X ３ ３ Si-(CH ２ ) ｍ -SiX ３ ３ …(2B ２ ) R ３０ Six ４ ２ R ３１ …(2C １ ) R ３２ X ５ ２ Si-(CH ２ ) ｍ -SiX ５ ２ R ３３ …(2C ２ ) -(SiR ４０ R ４１ -NR ４２ ) ｋ -...(2D) Formula (2B １ ), (2B ２ ), formula (2C １ ), formula (2C ２ ), and in formula (2D), R ２０ , R３０ , R ３１ , R ３２ , R ３３ , R ４０ , and R ４１ are each independently an alkyl group; R ４２ are each independently a hydrogen atom or an alkyl group, ２ , X ３ , X ４ , and X ５ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group, and each m is independently an integer of 1 or more. In formula (2D), k is an integer that makes the number average molecular weight of the compound 3,000 to 100,000. <4> The silane compound is a compound A and a compound B represented by formula (2B １ ) and a compound represented by formula (2B ２ <5> The optical article according to <4>, wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain of compound B to the total number of silicon atoms in compound A and compound B is 0.005 to 0.1. <6> The optical article according to any one of <1> to <5>, wherein the substrate is glass. <7> The optical article according to any one of <1> to <6>, wherein the optical article is a display or a touch panel. <8> An optical article comprising a substrate, an underlayer, and a surface treatment layer containing a compound having a chain organo(poly)siloxane residue and a reactive silyl group, arranged in this order, and wherein the composition for forming an underlayer contains a silane compound other than silica, and is used to form the underlayer. <9> The silane compound is a compound represented by the following formula (1A １ ) and a compound represented by the following formula (1A ２ The composition for forming an undercoat layer according to <8>, comprising at least one compound A selected from the group consisting of compounds having a structure represented by SiX １ ４ …(1A １ ) -(SiH ２ NH)ｎ - ... (1A ２ ) Formula (1A １ ) Medium, X １ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group. ２ In the formula (2B), n is an integer that provides a number average molecular weight of the compound of 3,000 to 100,000. １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２ The composition for forming an undercoat layer according to <9>, further comprising at least one compound selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D): ２０ Six ２ ３ …(2B １ ) X ３ ３ Si-(CH ２ ) ｍ -SiX ３ ３ …(2B ２ ) R ３０ Six ４ ２ R ３１ …(2C １ ) R ３２ X ５ ２ Si-(CH ２ ) ｍ -SiX ５ ２ R ３３ …(2C ２ ) -(SiR ４０ R ４１ -NR ４２ ) ｋ -...(2D) Formula (2B １ ), (2B ２ ), formula (2C １ ), formula (2C ２ ), and in formula (2D), R ２０ , R ３０ , R ３１ , R ３２ , R ３３ , R４０ , and R ４１ are each independently an alkyl group; R ４２ are each independently a hydrogen atom or an alkyl group, ２ , X ３ , X ４ , and X ５ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group, and each m is independently an integer of 1 or more. In formula (2D), k is an integer such that the average molar mass of the compound is 3,000 to 100,000. <11> The silane compound is a compound A and a compound B represented by formula (2B １ ) and a compound represented by the following formula (2B ２ <12> The composition for forming a primer layer according to <11>, wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain of compound B to the total number of silicon atoms in compounds A and B is 0.005 to 0.1. <13> A surface treatment set for an optical article having a base, a primer layer, and a surface treatment layer arranged in this order, comprising: a primer layer forming composition used to form the primer layer; and a surface treatment agent used to form the surface treatment layer, wherein the primer layer forming composition contains a silane compound other than silica, and the surface treatment agent contains a compound having a chain organo(poly)siloxane residue and a reactive silyl group. <14> The silane compound is a compound represented by the following formula (1A): １ ) and a compound represented by the following formula (1A ２ The surface treatment set according to <13>, comprising at least one compound A selected from the group consisting of compounds having a structure represented by SiX １ ４ …(1A １ ) -(SiH ２ NH) ｎ - ... (1A ２ ) Formula (1A １ ) Medium, X １are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group. ２ In the formula (2B), n is an integer that provides an average molar mass of the compound of 3,000 to 100,000. １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２ The surface treatment set according to <14>, further comprising at least one compound selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D): ２０ Six ２ ３ …(2B １ ) X ３ ３ Si-(CH ２ ) ｍ -SiX ３ ３ …(2B ２ ) R ３０ Six ４ ２ R ３１ …(2C １ ) R ３２ X ５ ２ Si-(CH ２ ) ｍ -SiX ５ ２ R ３３ …(2C ２ ) -(SiR ４０ R ４１ -NR ４２ ) ｋ -...(2D) Formula (2B １ ), (2B ２ ), formula (2C １ ), formula (2C ２ ), and in formula (2D), R ２０ , R ３０ , R ３１ , R ３２ , R ３３ , R ４０ , and R ４１ are each independently an alkyl group; R ４２are each independently a hydrogen atom or an alkyl group, ２ , X ３ , X ４ , and X ５ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group, and each m is independently an integer of 1 or more. In formula (2D), k is an integer such that the average molar mass of the compound is 3,000 to 100,000. <16> The silane compound is a compound A and a compound B represented by formula (2B １ ) and a compound represented by the following formula (2B ２ The set for surface treatment according to <14> or <15>, wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain of compound B to the total number of silicon atoms in compound A and compound B is 0.005 to 0.1.

[0561] The disclosure of Japanese Patent Application No. 2023-174763, filed on October 6, 2023, is incorporated herein by reference in its entirety. All documents, patent applications, and technical standards described herein are incorporated herein by reference to the same extent as if each individual document, patent application, and technical standard was specifically and individually indicated to be incorporated by reference.

Claims

1. An optical article comprising a substrate, a primer layer, and a surface treatment layer arranged in this order, the primer layer being a layer formed using a composition for forming a primer layer containing a silane compound other than silica, and the surface treatment layer being a layer formed using a surface treatment agent containing a compound having a chain group and a reactive silyl group.

2. The optical article according to claim 1, wherein the compound having a chain group and a reactive silyl group is a compound having a chain organo(poly)siloxane residue and a reactive silyl group.

3. The silane compound is represented by the following formula (1A １ ) and a compound represented by the following formula (1A ２ The optical article according to claim 1, comprising at least one compound A selected from the group consisting of compounds having a structure represented by SiX １ ４ … (1A １ ) -(SiH ２ N.H. ｎ - ... (1A ２ ) Formula (1A １ ) Medium, X １ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group. ２ In the formula, n is an integer that provides a number average molecular weight of the compound of 3,000 to 100,000.

4. The silane compound is represented by the following formula (2B １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２ 4. The optical article according to claim 3, further comprising at least one selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D): ２０ Six ２ ３ … (2B １ ) X ３ ３ Si-(CH ２ ) ｍ -SiX ３ ３ … (2B ２ ) R ３０ Six ４ ２ R ３１ … (2C １ ) R ３２ X ５ ２ Si-(CH ２ ) ｍ -SiX ５ ２ R ３３ … (2C ２ ) -(SiR ４０ R ４１ -NR ４２ ) ｋ -...(2D) Formula (2B １ ), (2B ２ ), formula (2C １ ), formula (2C ２ ), and in formula (2D), R ２０ , R ３０ , R ３１ , R ３２ , R ３３ , R ４０ , and R ４１ are each independently an alkyl group; R ４２ are each independently a hydrogen atom or an alkyl group; ２ , X ３ , X ４ , and X ５ each independently represents an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group, and each m independently represents an integer of 1 or greater. In formula (2D), k is an integer that provides a number average molecular weight of the compound of 3,000 to 100,000.

5. The silane compound is the compound A and the compound represented by the formula (2B １ ) and the compound represented by the formula (2B ２ 5. The optical article according to claim 4, comprising at least one compound B selected from the group consisting of compounds represented by the formula (I) and (II), wherein the compound B has a ratio of the number of carbon atoms contained in an alkyl group or an alkylene chain to the number of silicon atoms of 1 or less.

6. The optical article according to claim 5, wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain in compound B to the total number of silicon atoms in compound A and compound B is 0.005 to 0.

1.

7. The optical article according to any one of claims 1 to 6, wherein the substrate is glass.

8. The optical article according to any one of claims 1 to 6, which is a display or a touch panel.

9. A composition for forming an underlayer, which contains a silane compound other than silica and is used to form an underlayer in an optical article having a substrate, an underlayer, and a surface treatment layer containing a compound having a chain group and a reactive silyl group, arranged in that order.

10. The composition for forming an undercoat layer according to claim 9, wherein the compound having a chain group and a reactive silyl group is a compound having a chain organo(poly)siloxane residue and a reactive silyl group.

11. The silane compound is represented by the following formula (1A １ ) and a compound represented by the following formula (1A ２ The composition for forming an undercoat layer according to claim 9, comprising at least one compound A selected from the group consisting of compounds having a structure represented by the formula: SiX １ ４ … (1A １ ) -(SiH ２ N.H. ｎ - ... (1A ２ ) Formula (1A １ ) Medium, X １ each independently represents an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group. ２ In the formula, n is an integer that provides a number average molecular weight of the compound of 3,000 to 100,000.

12. The silane compound is represented by the following formula (2B １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２ 12. The composition for forming an undercoat layer according to claim 11, further comprising at least one selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D): ２０ Six ２ ３ … (2B １ ) X ３ ３ Si-(CH ２ ) ｍ -SiX ３ ３ … (2B ２ ) R ３０ Six ４ ２ R ３１ … (2C １ ) R ３２ X ５ ２ Si-(CH ２ ) ｍ -SiX ５ ２ R ３３ … (2C ２ ) -(SiR ４０ R ４１ -NR ４２ ) ｋ -...(2D) Formula (2B １ ), (2B ２ ), formula (2C １ ), formula (2C ２ ), and in formula (2D), R ２０ , R ３０ , R ３１ , R ３２ , R ３３ , R ４０ , and R ４１ are each independently an alkyl group; R ４２ are each independently a hydrogen atom or an alkyl group; ２ , X ３ , X ４ , and X ５ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group, and each m is independently an integer of 1 or greater. In formula (2D), k is an integer such that the average molar mass of the compound is 3,000 to 100,000.

13. The silane compound is the compound A and the compound represented by the formula (2B １ ) and a compound represented by the following formula (2B ２ 13. The composition for forming an undercoat layer according to claim 12, comprising at least one compound B selected from the group consisting of compounds represented by the formula (I) and (II), wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain to the number of silicon atoms in the compound B is 1 or less.

14. The composition for forming a base layer according to claim 13, wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain in compound B to the total number of silicon atoms in compound A and compound B is 0.005 to 0.

1.

15. A surface treatment set comprising: a base layer forming composition used to form the base layer in an optical article having a base material, a base layer, and a surface treatment layer arranged in this order; and a surface treatment agent used to form the surface treatment layer, wherein the base layer forming composition contains a silane compound other than silica, and the surface treatment agent contains a compound having a chain group and a reactive silyl group.

16. The surface treatment set according to claim 15, wherein the compound having a chain group and a reactive silyl group is a compound having a chain organo(poly)siloxane residue and a reactive silyl group.

17. The silane compound is represented by the following formula (1A １ ) and a compound represented by the following formula (1A ２ The set for surface treatment according to claim 15, comprising at least one compound A selected from the group consisting of compounds having a structure represented by SiX １ ４ … (1A １ ) -(SiH ２ N.H. ｎ - ... (1A ２ ) Formula (1A １ ) Medium, X １ each independently represents an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group. ２ ), n is an integer such that the average molar mass of the compound is between 3,000 and 100,000.

18. The silane compound is represented by the following formula (2B １ ), a compound represented by the following formula (2B ２ ), a compound represented by the following formula (2C １ ), a compound represented by the following formula (2C ２ The set for surface treatment according to claim 17, further comprising at least one selected from the group consisting of a compound represented by formula (2A) and a compound having a structure represented by formula (2D): ２０ Six ２ ３ … (2B １ ) X ３ ３ Si-(CH ２ ) ｍ -SiX ３ ３ … (2B ２ ) R ３０ Six ４ ２ R ３１ … (2C １ ) R ３２ X ５ ２ Si-(CH ２ ) ｍ -SiX ５ ２ R ３３ … (2C ２ ) -(SiR ４０ R ４１ -NR ４２ ) ｋ -...(2D) Formula (2B １ ), (2B ２ ), formula (2C １ ), formula (2C ２ ), and in formula (2D), R ２０ , R ３０ , R ３１ , R ３２ , R ３３ , R ４０ , and R ４１ are each independently an alkyl group; R ４２ are each independently a hydrogen atom or an alkyl group; ２ , X ３ , X ４ , and X ５ are each independently an alkoxy group, an isocyanato group, a halogen atom, a carboxy group, or a hydroxyl group, and each m is independently an integer of 1 or greater. In formula (2D), k is an integer such that the average molar mass of the compound is 3,000 to 100,000.

19. The silane compound is the compound A and a compound represented by the formula (2B １ ) and a compound represented by the following formula (2B ２ 19. The set for surface treatment according to claim 18, comprising at least one compound B selected from the group consisting of compounds represented by the formula (I) and (II), wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain to the number of silicon atoms in the compound B is 1 or less.

20. The surface treatment set according to claim 19, wherein the ratio of the number of carbon atoms contained in the alkyl group or alkylene chain in compound B to the total number of silicon atoms in compound A and compound B is 0.005 to 0.1.