Polymer, surface treatment agent, article, and method for producing article

Abstract

The present invention addresses the problem of providing: a polymer capable of forming a surface layer having excellent fingerprint removability and excellent durability; a surface treatment agent; an article having a surface layer formed by using the polymer; and a method for producing the article.　A polymer according to the present invention includes a repeating unit represented by formula (1) and has a reactive group.　(1): -(CH2-CR[C(=O)X-CH2-(CH2)m-CH2-(Si(CH3)2-O)n-(SiR1R2-O)p-Si(CH3)3])- Each sign in the formula is as described in the description.

Description

Polymers, surface treatment agents, articles, and methods for manufacturing articles

[0001] The present invention relates to polymers, surface treatment agents, articles, and methods for manufacturing articles.

[0002] In a wide variety of fields, including electrical and electronic materials, semiconductor materials, optical materials, building materials, and automotive parts, methods are known for forming a surface layer on the surface of materials (substrates) to suppress the adhesion of dirt to the materials used. The use of materials with such surface layers is expected to contribute to the realization of Goal 12 of the United Nations' Sustainable Development Goals (SDGs), "Responsible Consumption and Production," as it leads to a longer product lifecycle and, consequently, a reduction in waste.

[0003] Patent Document 1 discloses a mixed composition containing an organosilicon compound used for forming a liquid-repellent film, and a cured film of the mixed composition.

[0004] International Publication No. 2021 / 187184

[0005] In recent years, the performance requirements for surface layers have increased, and depending on the application, there is a demand for surface layers that are excellent in both the ability to easily remove fingerprints by wiping (fingerprint removal) and durability. When the present inventors evaluated a surface layer formed using a compound having a siloxane bond-containing group as described in Patent Document 1, they found that there is room for further improvement in the fingerprint removal and durability of the surface layer.

[0006] In view of the above circumstances, the object of the present invention is to provide a polymer capable of forming a surface layer with excellent fingerprint removal properties and durability, and a surface treatment agent, as well as an article having a surface layer with excellent fingerprint removal properties and durability, and a method for manufacturing the said article.

[0007] The present inventors have diligently studied the above problems and have found that the above problems can be solved by the following configurations: [1] A polymer having a reactive group and comprising a repeating unit represented by formula (1) described later. [2] The polymer according to [1], wherein the reactive group is a specific reactive group described later. [3] The polymer according to [1] or [2], wherein the polymer further comprises a repeating unit having the reactive group, or has the reactive group at the end of a polymer chain comprising a repeating unit represented by formula (1). [4] The polymer according to any one of [1] to [3], wherein n represents an integer from 0 to 4. [5] The polymer according to any one of [1] to [4], wherein n represents an integer from 1 to 3. [6] The polymer according to any one of [1] to [5], wherein m represents an integer from 12 to 30. [7] A surface treatment agent comprising the polymer according to any one of [1] to [6]. [8] The surface treatment agent according to [7], further comprising a liquid medium. [9] A surface treatment agent according to [7], which is an antifouling coating agent or a waterproof coating agent.

[10] A surface treatment agent according to [8], which is an antifouling coating agent or a waterproof coating agent.

[11] An article having a surface layer formed using any of the polymers according to [1] to [6] on the surface of a substrate.

[12] An article according to

[11] , which is an optical component.

[13] An article according to

[11] or

[12] , which has the above-mentioned surface layer on the surface of a component constituting the surface touched by a finger on a touch panel.

[14] A method for manufacturing an article, wherein a surface layer is formed by a dry coating method using the surface treatment agent according to [7] or [9].

[15] A method for manufacturing an article, wherein a surface layer is formed by a dry coating method using the surface treatment agent according to [8] or

[10] .

[16] A method for manufacturing an article, wherein a surface layer is formed by a wet coating method using the surface treatment agent according to [8] or

[10] .

[0008] According to the present invention, it is possible to provide a polymer capable of forming a surface layer with excellent fingerprint removal properties and excellent durability, and a surface treatment agent. Furthermore, according to the present invention, it is possible to provide an article having a surface layer with excellent fingerprint removal properties and excellent durability, and a method for manufacturing the said article.

[0009] This is a schematic cross-sectional view showing an example of an article of the present invention.

[0010] The meanings of terms used in this invention are as follows. In this specification, a repeating unit represented by formula (1) is referred to as unit 1. The same applies to repeating units represented by other formulas. In this specification, when a compound or group is represented by a specific formula (X), the compound or group represented by formula (X) may be referred to as compound (X) or compound X, or as group (X) or group X, respectively. Similarly, when a polymer is represented by a specific formula (X), the polymer represented by formula (X) may be referred to as polymer (X) or polymer X. "Fluoroalkyl group" is a general term encompassing both perfluoroalkyl groups and partial fluoroalkyl groups. "Perfluoroalkyl group" means a group in which all hydrogen atoms of the alkyl group are replaced with fluorine atoms. "Partial fluoroalkyl group" is an alkyl group in which one or more hydrogen atoms are replaced with fluorine atoms and which has one or more hydrogen atoms. In other words, a fluoroalkyl group is an alkyl group having one or more fluorine atoms. The same applies to fluoroalkylene groups. "Reactive silyl group" is a general term for hydrolyzable silyl groups and silanol groups (Si-OH), and "hydrolyzable silyl group" means a group that can form a silanol group through hydrolysis. "Organic group" means a hydrocarbon group that may have substituents and may have heteroatoms or other bonds in its carbon chain. "Hydrogen group" means an aliphatic hydrocarbon group (linear alkylene group, branched alkylene group, cycloalkylene group, etc.), an aromatic hydrocarbon group (phenylene group, etc.), or a group consisting of a combination thereof. "Surface layer" means a layer formed on the surface of the substrate. "Number average molecular weight" (Mn) and "weight average molecular weight" (Mw) are values ​​measured by size exclusion chromatography (gel permeation chromatography, GPC) using polystyrene as the standard substance. The "~" indicating a numerical range means that the values ​​written before and after it are included as the lower and upper limits. In numerical ranges described in stages within this disclosure, an upper or lower limit stated in one numerical range may be replaced by an upper or lower limit in another numerical range described in stages.Furthermore, in the numerical ranges described herein, the upper or lower limits of those ranges may be replaced with the values ​​shown in the examples. In this disclosure, each component may contain multiple types of the corresponding substance. If multiple types of the substance corresponding to each component are present in the composition, the content or amount of each component means the total content or amount of the multiple types of substances present in the composition unless otherwise specified. The bonding order in each divalent group is not limited unless otherwise specified. For example, L in formula (2) described later. Ｘ１ If is a (1+m1) valent hydrocarbon group having -C(=O)NH-, then the left bond of -C(=O)NH- is (T) in formula (2) ｘ１ ) ｍ１ It may be located to the side, or the right-hand coupling is in equation (2) (T ｘ１ ) ｍ１ They may be located to the side. Furthermore, if identical symbols exist within a single chemical formula, these identical symbols may represent identical structures, or they may represent different structures within a defined range. In this specification, "Me" may represent a methyl group, and "Et" may represent an ethyl group.

[0011] [Polymer] The polymer of the present invention is a polymer containing unit 1 described below and having a reactive group (hereinafter referred to as "specific polymer").

[0012] The specific polymer has multiple units 1, each having a polymethylene group with a trimethylsilyl group at its terminus (see formula (1) described later), and also possesses reactive groups. Because the specific polymer has multiple polymethylene groups with trimethylsilyl groups at their terminus, more trimethylsilyl groups are exposed on the surface of the surface layer, resulting in a surface layer with excellent fingerprint-removing properties. Furthermore, when forming a surface layer using the specific polymer, the reactive groups of the specific polymer are easily positioned on the substrate side, and these reactive groups strongly chemically bond with the substrate, resulting in a surface layer with excellent durability. This allows for the achievement of both fingerprint-removing properties and durability.

[0013] <Unit 1> Unit 1 is a repeating unit represented by formula (1). - (CH ２ -CR[C(=O)X-CH ２-(CH ２ ) ｍ -CH ２ -(Si(CH ３ )) ２ -O) ｎ -(SiR １ R ２ -O) ｐ -Si(CH ３ )) ３ )- (1) In formula (1), R represents a hydrogen atom, an alkyl group, or a halogen atom. X represents -O-, -NR ａ -, -O-L １ -OC(=O)-, -O-L １ -NR ｂ C(=O)-, -NR ａ -L １ -OC(=O)-, or -NR ａ -L １ -NR ｂ ​​​​​​​​​​​​​​​​​​​​​​​​​

[0015] R ａ and R ｂ The number of carbon atoms in the alkyl group may be, for example, 1 to 10, and preferably 1 to 3. If the alkyl group has 3 or more carbon atoms, the alkyl group with 3 or more carbon atoms may be linear, branched, or have a cyclic structure. ａ and R ｂ Each of these is preferably a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and more preferably a hydrogen atom. １ The alkylene group having 2 or 3 carbon atoms is preferred, and the ethylene group is more preferred. １ When the alkylene group represented by has 3 or more carbon atoms, the alkylene group having 3 or more carbon atoms may be linear or branched. X can be -O-, -NR ａ - or -OL -L １ -NR ｂ C(=O)- is preferred, -O-, -NH- or -O-(CH ２ ) ２ -NHC(=O)- is more preferred, and -NH- is even more preferred.

[0016] m is an integer between 1 and 30, and is preferably an integer between 6 and 30, and more preferably an integer between 12 and 30, in that it can form a surface layer with superior durability.

[0017] n is an integer from 0 to 40, and is preferably an integer from 0 to 8, more preferably an integer from 0 to 4, and even more preferably an integer from 1 to 3, in that it provides a good balance of fingerprint removal and durability of the surface layer.

[0018] p represents either 0 or 1. When p represents 1, unit 1 has a silane group at its terminal end, which has two or three trimethylsilyloxy groups and one or two methyl groups. It is preferable that p represents 0.

[0019] A particular polymer may contain multiple units of only one type, or it may contain two or more types of units. The bonding order of the two or more types of units is not limited and may be random, alternating, or arranged in blocks. Containing two or more types of units means that in the particular polymer, there are two or more types of units, each having at least one group with a different chemical structure.

[0020] The content of Unit 1 is preferably 50 to 100 mol%, and more preferably 70 to 100 mol%, relative to the total repeating units of the specific polymer. If the content of Unit 1 is above the lower limit of the above range, the fingerprint removal properties are better.

[0021] The following repeating units are specific examples of Unit 1. In the following repeating units, m represents an integer from 1 to 30. The preferred range for m is as described above.

[0022]

[0023]

[0024] <Reactive Groups> A particular polymer has reactive groups. Reactive groups may be groups that can react with other reactive groups of the same type or different types of reactive groups, and may also be groups that are reactive with respect to a substrate.

[0025] Examples of reactive groups include -Ar １ , -SR １０ , -NOR １０ , -C(=O)R １０ , -N(R １０ ) ２ , -N ＋ (R １０ ) ３ X ３ , -C≡N, -C(=NR １０ )-R １０ , -N ＋ ≡NX ３ -N=NR １０ , -C (=O) OR １０ -C(=O)OX ２ , -C(=O)X ４ , -C(=O)OC(=O)R １０ , -OC(=O)-CH２ =CH ２ -C(=O)OR １０ 、-SO ２ R １０ 、-SO ２ X ４ 、-SO ３ H、-SO ３ X ２ 、-P(=O)(-OR １０ ) ２ 、-O-P(=O)(-OR １０ ) ２ 、-O-P(=O)(-OR １０ )(-OX ２ )、-N=C=O、-N=C=S、-SiR<0**********84> ｚ１ R ａ１１ ３－ｚ１ 、-SiH(R １０ )<000008**********9>、-Si(-OC ２ H ４ -OCH ３ ) ３ 、-Si[-N(CH ３ ) ２ ３ 、-C≡C(R １０ )、-C(=O)N(R １０ ) ２ 、-N(R １０ )C(=O)R １０ 、-Si(R １０ ) ２ -CH ２ -Si(R １０ )[[ID=*******74]] ３ 、-NH-C(=O)R １０ 、-C(=O)NHR １０ 、-I、-Br、-B(OH ２ 、-N ３ 、and a group selected from the group consisting of the groups represented by the following (hereinafter referred to as "specific reactive group").

[0026]

[0027] However, R １０ is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms which may have a substituent, or an aryl group which may have a substituent, and Ar １ ​X is an aryl group which may have substituents, ２ X is an alkali metal ion or ammonium ion. ３ X is a halide ion. ４ R is a halogen atom. ａ１ R is a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group. ａ１１ is a hydrocarbon group, z1 is an integer from 1 to 3, Et is an ethyl group, R １０ , R ａ１ or R ａ１１ When there are multiple R １０ , R ａ１ or R ａ１１ These may be identical or different from each other. Preferably, the specific polymer has a specific reactive group.

[0028] Ar １ and R １０ The aryl group in this formula may be a phenyl group, a naphthyl group, etc., and may further have substituents. Substituents that the aryl group may have include fluorine atoms, halogen atoms such as chlorine atoms, alkyl groups having 1 to 6 carbon atoms, and those similar to those exemplified as the functionalizing group T. １０ The alkyl group in has 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms. The alkyl group may have other substituents. Examples of substituents that the alkyl group may have include halogen atoms such as chlorine atoms, and those similar to those exemplified as the functional group T described later.

[0029] Specific polymers having N-hydroxyl groups, aldehyde groups, ketone groups, amino groups, quaternary ammonium groups, nitrile groups, imino groups, diazo groups, carboxyl groups, carboxylates, acid anhydride groups, sulfo groups, sulfonates, phosphate groups, phosphates, or boronic acid groups (hereinafter referred to as "functionality-imparting groups T") as specific reactive groups are given various properties such as acidity, alkalinity, and hydrophilicity by the functionality-imparting groups T, and functions such as improved solubility in specific solvents or improved adhesion to specific substrates are imparted. Examples of counterions for quaternary ammonium groups include halide ions. Examples of counterions for carboxylates, sulfonates, and phosphates include alkali metal ions and ammonium ions. Furthermore, specific polymers having isocyanate groups, isothiocyanate groups, epoxy groups, glycidyl groups, oxetanyl groups, or mercapto groups as specific reactive groups can be combined with epoxy curing agents to prepare thermosetting or photocurable compositions. The cured coating obtained from this composition possesses both water-repellent and oil-repellent properties, as well as hard-coat properties. The amide bond, ester bond, ether bond, thioether bond, siloxane bond, or urea bond in the specific reactive group is a bond that connects alkyl groups, fluoroalkyl groups, aryl groups, heteroaryl groups, etc., contained in the specific reactive group. The specific polymer may also have other functional groups through these bonds.

[0030] When the specific reactive group contained in the specific polymer is an amino group, a carboxyl group, or a mercapto group, it is preferable in terms of ease of synthesis, chemical stability, and adhesion to the substrate.

[0031] Furthermore, when a specific polymer is used as a surface treatment agent to form a surface layer with excellent durability such as abrasion resistance, the reactive group is preferably a reactive silyl group. Examples of reactive silyl groups include groups having a silicon atom among the specific reactive groups mentioned above, and the group represented by the following formula (S1) is preferred.

[0032] -SiR ａ１ ｚ１ R ａ１１ ３－ｚ１ (S1)

[0033] In formula (S1), R ａ１ R is a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group. ａ１１ is a hydrocarbon group, z1 is an integer from 1 to 3, and R ａ１ , or R ａ１１ If there are multiple R ａ１ , or R ａ１１ They may be the same or different from one another.

[0034] R ａ１ When the group is a hydroxyl group, it forms a silanol (Si-OH) group together with the Si atom. Hydrolyzable groups are groups that become hydroxyl groups through hydrolysis. The silanol group further reacts intermolecularly to form a Si-O-Si bond. The silanol group also undergoes a dehydration condensation reaction with the hydroxyl group (substrate-OH) on the surface of the substrate to form a chemical bond (substrate-O-Si). When a particular polymer has one or more reactive silyl groups as reactive groups, the durability of the surface layer is superior.

[0035] R ａ１ Examples of hydrolyzable groups include alkoxy groups, aryloxy groups, alkenyloxy groups, halogen atoms, acyl groups, acyloxy groups, amino groups, isocyanate groups (-NCO), etc. As alkoxy groups, alkoxy groups having 1 to 4 carbon atoms are preferred. As acyl groups, acyl groups having 1 to 6 carbon atoms are preferred. As acyloxy groups, acyloxy groups having 1 to 6 carbon atoms are preferred.

[0036] R ａ１ The hydrolyzable group can be any of the hydrolyzable groups exemplified above. Ａ -L Ｂ L is preferable. Ａ L is an alkylene group, Ｂ This is a hydrolyzable group. The number of carbon atoms in the alkylene group is preferably 1 to 10. Ｂ The hydrolyzable group represented by the above R ａ１This is synonymous with the hydrolyzable group in and the preferred embodiment is the same. Other preferred embodiments of the hydrolyzable group include alkylene oxide-modified alkoxy groups. Examples of alkylene oxide-modified alkoxy groups include -(O-R ４１ ) ｎ１１ -L ４１ A group represented by R is preferred. Here, R ４１ L is an alkylene group having 1 to 10 carbon atoms. ４１ R is an alkoxy group having 1 to 6 carbon atoms, and n11 is an integer from 1 to 6. Among them, R ４１ The alkylene group has 1 to 6 carbon atoms, and n11 is preferably 1.

[0037] R ａ１ From the standpoint of ease of synthesis, alkoxy groups having 1 to 4 carbon atoms, and the aforementioned -O-L Ａ -L Ｂ Alternatively, halogen atoms are preferred. ａ１ In this compound, alkoxy groups having 1 to 4 carbon atoms are preferred because they offer excellent storage stability for specific polymers and suppress outgassing during the reaction. Ethoxy groups are more preferred for long-term storage stability, and methoxy groups are more preferred for shortening the hydrolysis reaction time. As for the halogen atom, chlorine atoms are preferred.

[0038] R ａ１１ This is a hydrocarbon group. Examples of hydrocarbon groups include alkyl groups, cycloalkyl groups, alkenyl groups, and allyl groups, and alkyl groups are preferred from the viewpoint of ease of synthesis. Furthermore, from the viewpoint of ease of synthesis, the number of carbon atoms in the hydrocarbon group is preferably 1 to 6, more preferably 1 to 3, and even more preferably 1 to 2.

[0039] In base S1, R ａ１ The number z1 can be 1 to 3, and from the viewpoint of excellent adhesion to the substrate, 2 or 3 is preferred, and 3 is more preferred. A specific example of group S1 is -Si(OCH ３ ) ３ ,-Si(CH ３ ) (OCH ３ ) ２ ,-Si(CH ３ ) ２ (OCH ３), -Si(OCH ２ CH ３ ) ３ , -Si(OCH ２ CH ２ OCH ３ ) ３ , -SiCl ３ , -Si(OC(=O)CH ３ ) ３ , -Si(NCO) ３ ,-Si(N(CH ３ ) ２ ) ３ -Si(OH) ３ , -Si(OSi(CH ３ ) ３ ) ３ One example is -Si(OCH) due to its ease of handling during manufacturing. ３ ) ３ , -Si(OCH ２ CH ３ ) ３ It is preferable.

[0040] The following structure is also a preferred embodiment of the specific reactive group. However, in the formula, R is the same as the R described above. １０ This represents a combination, and * indicates a bonding hand.

[0041]

[0042] The embodiments in which the reactive group is included in the specific polymer are not particularly limited, but examples include an embodiment in which the specific polymer further includes repeating units having a reactive group (hereinafter referred to as "Embodiment X"), and an embodiment in which a reactive group is located at the end of a polymer chain containing unit 1 (hereinafter referred to as "Embodiment Y"). Embodiments X and Y will be described in detail below.

[0043] (Aspect X (Unit 2)) Aspect X is an aspect in which the specific polymer includes repeating units having reactive groups. The repeating units having reactive groups are different from those of Unit 1. Preferably, the repeating units having reactive groups are repeating units (Unit 2) represented by the following formula (2).

[0044]

[0045] In formula (2), T Ｘ１is a reactive group, m1 is an integer greater than or equal to 1, and L Ｘ１ is an organic group with (1 + m1) valence, and R Ｘ１ and R Ｘ２ Each of these independently consists of a hydrogen atom, an alkyl group, or (T Ｘ１ ) ｍ１ -L Ｘ１ - and if m1 is an integer greater than or equal to 2, there are multiple T Ｘ１ They may be the same or different from one another.

[0046] T Ｘ１ The reactive group represented by is synonymous with the reactive group described above, and the preferred embodiment is also the same.

[0047] m1 is an integer greater than or equal to 1. From the viewpoint of ease of synthesis and ease of handling of the specific polymer, m1 is preferably 1 to 10, more preferably 1 to 3, and even more preferably 1 or 2.

[0048] L Ｘ１ L is an organic group with a (1 + m1) valency. Ｘ１ The organic group in this is preferably a hydrocarbon group. The hydrocarbon group is preferably an aliphatic hydrocarbon group (which may be saturated or unsaturated, and may be linear, branched, or cyclic), an aromatic hydrocarbon group, or a combination thereof. From the viewpoint of superior fingerprint removal properties of the surface layer, an aliphatic hydrocarbon group is more preferred, and a saturated aliphatic hydrocarbon group is even more preferred. The number of carbon atoms in the (1+m1) valence organic group is preferably 1 to 20. From the viewpoint of superior fingerprint removal properties, the number of carbon atoms in the (1+m1) valence organic group is preferably 1 to 3 or 8 to 20. The (1+m1) valence organic group is -O-, -C(=O)-, -C(=O)NH-, -C(=O)O-, -NR ３１ C(=O)O- and -NR ３２ C(=O)NR ３３ It may have at least one group selected from the group consisting of -. ３１ , R ３２ and R ３３ Each of these is independently either a hydrogen atom or an alkyl group. ３１ , R ３２ and R３３ The number of carbon atoms in the alkyl group is preferably 1 to 3. If the alkyl group has 3 or more carbon atoms, the alkyl group with 3 or more carbon atoms may be linear, branched, or have a ring structure.

[0049] L Ｘ１ A specific example is *-(CH ２ ) ｎｘ１ -**, *- (CH ２ ) ｎｘ２ -O-(CH ２ ) ｎｘ３ -**, *-C(=O)O-(CH ２ ) ｎｘ１ -**, *-C(=O)O-(CH ２ ) ｎｘ２ -OC(=O)NR ３１ - (CH ２ ) ｎｘ３ -**, *- (CH ２ ) ｎｘ２ -NR ３２ C(=O)NR ３３ - (CH ２ ) ｎｘ３ -**, *-OC(=O)NR ３１ - (CH ２ ) ｎｘ１ -** is an example. In the formula, * is a carbon atom of the main chain (i.e., R in formula (2)). Ｘ１ This indicates the bond position with the carbon atom bonded to it, and ** represents T Ｘ１ This represents the connection position with, where nx1 is an integer from 1 to 20, nx2 and nx3 are each independent integers of 1 or more, and the sum of nx2 and nx3 is from 2 to 20, R ３１ , R ３２ and R ３３ As stated above.

[0050] R Ｘ１ and R Ｘ２ Each of these independently consists of a hydrogen atom, an alkyl group, or (T Ｘ１ ) ｍ１ -L Ｘ１ - is R Ｘ１ and R Ｘ２The number of carbon atoms in the alkyl group is preferably 1 to 20, more preferably 1 to 3, and even more preferably 1. When the alkyl group has 3 or more carbon atoms, the alkyl group with 3 or more carbon atoms may be linear, branched, or have a cyclic structure. Ｘ１ and R Ｘ２ (T Ｘ１ ) ｍ１ -L Ｘ１ - In T Ｘ１ , m1 and L Ｘ１ The definition and preferred embodiment of R are as described above. Ｘ１ Preferably, it is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, more preferably a hydrogen atom or a methyl group, and even more preferably a hydrogen atom. Ｘ２ Preferably, the element is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and more preferably a hydrogen atom.

[0051] If a specific polymer contains unit 2, the bonding order of unit 1 and unit 2 within the specific polymer is not limited and may be arranged randomly, alternately, or in blocks.

[0052] If a particular polymer contains unit 2, it may contain multiple units of only one type of unit 2, or it may contain two or more types of unit 2. The bonding order of the two or more types of unit 2 is not limited and may be arranged randomly, alternately, or in blocks. Containing two or more types of unit 2 means that in the particular polymer, there are two or more types of unit 2 in which the chemical structure of at least one group is different from each other.

[0053] When the specific polymer contains unit 2, the content of unit 2 is preferably 1 to 50 mol%, and more preferably 1 to 30 mol%, relative to the total repeating units of the specific polymer. If the content of unit 2 is above the lower limit of the above range, durability is better. If the content of unit 2 is below the upper limit of the above range, fingerprint removal is better.

[0054] A concrete example of unit 2 is the repeating unit represented by the following formula.

[0055]

[0056]

[0057]

[0058] (Aspect Y) Aspect Y is an aspect in which a reactive group is located at the end of a polymer chain containing unit 1. In this case, the specific polymer is preferably a polymer represented by formula (1Y), for example.

[0059] P Ｙ１ -L Ｙ１ - (T Ｙ１ ) ｍ２ (1Y)

[0060] In formula (1Y), P Ｙ１ This is a polymer chain containing unit 1, L Ｙ１ is a single bond or a (1+m2) valence group, T Ｙ１ L is the reactive group mentioned above. Ｙ１ If it is a single bond, then m2 is 1, L Ｙ１ If is a (1 + m2) valence base, then m2 is an integer greater than or equal to 1.

[0061] P Ｙ１ This is a polymer chain containing unit 1. Ｙ１ In addition to unit 1, it may also include at least one of unit 2 (described above) and other units (described below). Ｙ１ If the combination includes unit 1, unit 2, and at least one of the other units, the order in which unit 1, unit 2, and at least one of the other units are combined is not limited and may be arranged randomly, alternately, or in blocks.

[0062] L Ｙ１ This is a single bond or a (1+m2) valence group. When m2 is 2 or more, the (1+m2) valence group is at least one branch point selected from the group consisting of C, N, Si, and a ring structure (hereinafter referred to as "branch point P"). ２ It is preferable to have the following:

[0063] Branch point P ２As for the ring structure constituting the ring, from the standpoint of ease of synthesis and superior friction resistance, light resistance, and chemical resistance of the surface layer, one selected from the group consisting of a 3- to 8-membered aliphatic ring, a 6-membered aromatic ring, a 5- to 6-membered heterocycle, and a fused ring consisting of two or more of these rings is preferred, and the ring structure shown in the following formula is more preferred. The ring structure may have substituents such as halogen atoms, alkyl groups (which may contain an etheric oxygen atom between carbon atoms), cycloalkyl groups, alkenyl groups, allyl groups, alkoxy groups, and oxo groups (=O).

[0064]

[0065] L Ｙ１ This includes alkylene groups, hydroxyalkylene groups, alkoxyalkylene groups, carbonyl groups, amide bonds, ether bonds, thioether bonds, urea bonds, urethane bonds, carbonate bonds, ester bonds, and -SO ２ NR ２６ -, -Si(R ２６ ) ２ -, -OSi(R ２６ ) ２ -, and -Si(CH ３ ) ２ -Ph １ -Si(CH ３ ) ２ - and a group comprising one or more divalent organopolysiloxane residues (hereinafter referred to as "group B") １０ It is written as follows: ) It may have R ２６ Ph is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a phenyl group. １ This is a phenylene group. ２６ The number of carbon atoms in the alkyl group is preferably 1 to 3, and more preferably 1 or 2, from the standpoint of facilitating the production of specific polymers.

[0066] Examples of divalent organopolysiloxane residues include the group shown in the following formula. However, R in the following formula... ２７ R is a hydrogen atom, an alkyl group, an alkoxy group, or a phenyl group. ２７ The number of carbon atoms in the alkyl and alkoxy groups is preferably 1 to 10, and more preferably 1.

[0067]

[0068] L Ｙ１ Preferred forms include one or more hydrocarbon groups, one or more hydrocarbon groups and one or more group B １０ In combination with, one or more hydrocarbon groups and one or more branching points P ２ In combination with, one or more hydrocarbon groups and one or more branching points P ２ and one or more base B １０ Examples of combinations include those with the above. Specific examples of hydrocarbon groups include aliphatic hydrocarbon groups (e.g., divalent aliphatic hydrocarbon groups such as alkylene groups and cycloalkylene groups) and aromatic hydrocarbon groups (e.g., divalent aromatic hydrocarbon groups such as phenylene groups). The number of carbon atoms in the hydrocarbon group is preferably 1 to 20. The number of carbon atoms in the hydrocarbon group may be 1 to 10, 1 to 6, or 1 to 4.

[0069] L Ｙ１ A specific example is *-(CH ２ ) ｎｃ１ -**, *- (CH ２ ) ｎｃ１ -C(-CH) ２ CH ２ CH ２ -**) ３ , *-CH(-**)-CH(CH ３ )-C(=O)O-(CH ２ ) ｎｃ１ -OCF ３ *-CH ２ -CH(-**)-(CH ２ ) ｎｃ１ -OCF ３ , *-CH(-**)-CH ２ - (CH ２ ) ｎｃ１ -OCF ３ *-CH ２ -C(Me)(-CH ２ CH ２ CH ２ -**) ２ , *-L Ｙ２ - (CH ２ ) ｎｃ１ -**, *-L Ｙ２ -CH２ -CH (-CH ２ CH ２ CH ２ -**) ２ , *-L Ｙ２ -CH ２ -C(Me)(-CH ２ CH ２ CH ２ -**) ２ , *-L Ｙ２ -CH ２ -C(-CH) ２ CH ２ CH ２ -**) ３ , *-L Ｙ２ - (CH ２ ) ｎｃ１ -C(=O)NH-CH ２ -CH (-CH ２ CH ２ CH ２ -**) ２ , *-(CH ２ ) ｎｃ１ -C(=O)NH-CH ２ -CH (-CH ２ CH ２ CH ２ -**) ２ , *-L Ｙ２ -C(=O)-C(-CH ２ CH ２ CH ２ -**) ３ Examples include: * is P Ｙ１ This indicates the connection position with T, where ** represents T Ｙ１ This represents the connection position, and nc1 is an integer from 1 to 20. Ｙ２ These are -O-, -S-, -C(=O)-, -NH-, -SO-, and -SO ２ - and also represent a divalent linking group formed by combining two or more of these linking groups. Ｙ２ Examples include -O-, -S-, -C(=O)NH-, -NHC(=O)NH-, -OC(=O)NH-, and -SO ２ NH- or -SO ３ - is preferred, and -S- is more preferred.

[0070] m2 is L Ｙ１ If it is a single bond, then it is 1, L Ｙ１If it is a (1 + m²) valence linking group, then it is an integer greater than or equal to 1. Ｙ１ When is a (1+m2) valent linking group, m2 is preferably 1 to 10, more preferably 1 to 6, and even more preferably 1 to 3, from the viewpoint of ease of synthesis and ease of handling of the polymer.

[0071] Specific examples of polymers represented by formula (1Y) include polymers represented by the following formula.

[0072]

[0073]

[0074]

[0075] <Other Units> The specified polymer may contain repeating units other than Unit 1 and Unit 2 (hereinafter referred to as "other units").

[0076] If a specific polymer contains other units, the bonding order between unit 1 and the other units in the specific polymer is not limited and may be random, alternating, or arranged in blocks.

[0077] If a particular polymer contains other units, it may contain multiple units of only one type of other unit, or it may contain two or more types of other units. The bonding order of the two or more types of other units is not limited and may be random, alternating, or arranged in blocks. Containing two or more types of other units means that there are two or more other units in which the chemical structure of at least one group contained in the repeating unit is different from that of the other units.

[0078] If the specific polymer contains other units, the content of the other units is preferably 1 to 30 mol%, and more preferably 1 to 10 mol%, relative to the total repeating units of the specific polymer.

[0079] <Physical Properties, etc.> The weight-average molecular weight (Mw) of the specific polymer is preferably 500 to 30,000, more preferably 500 to 20,000, and even more preferably 500 to 15,000. If Mw is above the lower limit of the above range, the durability of the surface layer is better. If Mw is below the upper limit of the above range, the viscosity is easier to adjust within an appropriate range, and the solubility is improved, resulting in excellent handling during film formation.

[0080] [Surface Treatment Agent] The surface treatment agent of the present invention (hereinafter referred to as "this surface treatment agent") contains the specific polymer described above. This surface treatment agent is suitably used as a surface treatment agent for forming a surface layer on the surface of components that make up the surface touched by fingers on touch panels, eyeglass lenses, and the displays of wearable devices, where long-term fingerprint removal is required. Furthermore, because this surface treatment agent has excellent slip resistance, it is also suitably used on glass-coated casings of portable devices such as smartphones and tablet terminals. This surface treatment agent is also suitably used as an anti-fouling coating agent or a waterproof coating agent.

[0081] This surface treatment agent may further contain a liquid medium. In the following description, this surface treatment agent containing a liquid medium may be referred to as a coating solution. The coating solution may be a liquid, a solution, or a dispersion. The coating solution may contain a specific polymer and may contain impurities such as by-products generated in the manufacturing process of the specific polymer. The concentration of the specific polymer in the coating solution is preferably 0.001 to 40% by mass, more preferably 0.01 to 20% by mass, and even more preferably 0.1 to 10% by mass.

[0082] As the liquid medium, an organic solvent is preferred. The organic solvent may be a fluorine-containing organic solvent, a non-fluorine-containing organic solvent, or a mixture of both. Specific examples of fluorine-containing organic solvents include fluorinated alkanes, fluorinated aromatic compounds, fluoroalkyl ethers, fluorinated alkylamines, fluoroalcohols, and hydrofluoroolefins (HFOs). As fluorinated alkanes, compounds having 4 to 8 carbon atoms are preferred. Specific examples of commercially available products include C６ F １３ H (AGC Corporation, Asahi Clean® AC-2000), C ６ F １３ C ２ H ５ (Manufactured by AGC Corporation, Asahi Clean® AC-6000), C ２ F ５ CHFCHFCF ３ (Chemours Bartrell® XF) is one example. Specific examples of fluorinated aromatic compounds include hexafluorobenzene, trifluoromethylbenzene, perfluorotoluene, and bis(trifluoromethyl)benzene. As for fluoroalkyl ethers, compounds with 4 to 12 carbon atoms are preferred. A specific example of a commercially available product is CF ３ CH ２ OCF ２ CF ２ H (manufactured by AGC Corporation, Asahi Clean® AE-3000), C ４ F ９ OCH ３ (Manufactured by 3M, Novec® 7100), C ４ F ９ OC ２ H ５ (Manufactured by 3M, Novec® 7200), C ２ F ５ CF(OCH) ３ ) C ３ F ７ Examples include Novec® 7300 (manufactured by 3M). Specific examples of fluorinated alkylamines include perfluorotripropylamine and perfluorotributylamine. Specific examples of fluoroalcohols include 2,2,3,3-tetrafluoropropanol, 2,2,2-trifluoroethanol, and hexafluoroisopropanol. Specific examples of HFOs include 1-chloro-2,3,3-trifluoro-1-propene (HCFO-1233yd) (Amorea® AS-300 (manufactured by AGC)).

[0083] As nonfluorinated organic solvents, compounds consisting only of hydrogen atoms and carbon atoms, or compounds consisting only of hydrogen atoms, carbon atoms, and oxygen atoms are preferred. Examples of compounds consisting only of hydrogen atoms and carbon atoms, and compounds consisting only of hydrogen atoms, carbon atoms, and oxygen atoms include hydrocarbon organic solvents, alcohol organic solvents, ketone organic solvents, ether organic solvents, ester organic solvents, and glycol organic solvents.

[0084] Specific examples of hydrocarbon organic solvents include pentane, hexane, heptane, octane, hexadecane, isohexane, isooctane, isononane, cycloheptane, cyclohexane, bicyclohexane, benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, o-diethylbenzene, m-diethylbenzene, p-diethylbenzene, n-butylbenzene, sec-butylbenzene, and tert-butylbenzene.

[0085] Specific examples of alcoholic 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.

[0086] Specific examples of ketone 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.

[0087] Specific examples of ether-based organic solvents include diethyl ether, cyclopentyl methyl ether, tetrahydrofuran, and 1,4-dioxane.

[0088] Specific examples of ester-based organic solvents 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, and ethylene glycol monoethyl ether acetate. Examples include ethylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, cyclohexanol acetate, propylene glycol diacetate, propylene glycol monomethyl ether propionate, propylene glycol monoethyl ether acetate, propylene glycol monobutyl ether acetate, propylene glycol monopropyl ether acetate, 1,3-butylene glycol diacetate, 1,4-butanediol diacetate, 1,6-hexanediol diacetate, γ-butyrolactone, triacetin, and 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate.

[0089] 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 monotert-butyl ether, ethylene glycol monopropyl ether, ethylene glycol monomethyl ether, diethylene glycol monoisopropyl ether, and diethylene glycol monomethyl ether. Examples include polymethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monobutyl ether, dipropylene glycol monopropyl ether, dipropylene glycol monomethyl ether, tripropylene glycol monobutyl ether, tripropylene glycol monomethyl ether, propylene glycol monophenyl ether, 1,3-butylene glycol, diethylene glycol monoethyl ether, dipropylene 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, triethylene glycol dimethyl ether, and polyethylene glycol dimethyl ether.

[0090] Other non-fluorinated organic solvents not mentioned above include chlorinated organic solvents, nitrogen-containing compounds, sulfur-containing compounds, and siloxane compounds. Specific examples of chlorinated organic solvents include dichloromethane, chloroform, carbon tetrachloride, 1,2-dichloroethane, chlorobenzene, o-chlorotoluene, m-chlorotoluene, p-chlorotoluene, m-dichlorobenzene, and 1,2,3-trichloropropane. Specific examples of nitrogen-containing compounds include nitrobenzene, acetonitrile, benzonitrile, N,N-dimethylformamide, N,N-dimethylacetamide, N-methylpyrrolidone, and 1,3-dimethyl-2-imidazolidinone. Specific examples of sulfur-containing compounds include carbon disulfide and dimethyl sulfoxide. Specific examples of siloxane compounds include hexamethyldisiloxane, octamethyltrisiloxane, and decamethyltetrasiloxane.

[0091] The content of the liquid medium in the coating solution is preferably 60 to 99.999% by mass, more preferably 80 to 99.99% by mass, even more preferably 90 to 99.9% by mass, and particularly preferably 99 to 99.9% by mass, based on the total mass of the coating solution.

[0092] The surface treatment agent may contain other components besides the specific polymer and liquid medium, to the extent that they do not impair the effects of the disclosed herein. Examples of other components include known additives such as acid catalysts and basic catalysts that promote the hydrolysis and condensation reactions of hydrolyzable silyl groups. The content of other components in the surface treatment agent is preferably 10% by mass or less, and more preferably 1% by mass or less, based on the total mass of the surface treatment agent.

[0093] The total concentration of the specific polymer and other components in the coating solution (hereinafter referred to as "solids concentration") is preferably 0.001 to 40% by mass, more preferably 0.01 to 20% by mass, even more preferably 0.01 to 10% by mass, and particularly preferably 0.01 to 1% by mass. The solids concentration of the coating solution is calculated from the mass of the coating solution before heating and the mass after heating in a convection dryer at 120°C for 4 hours.

[0094] [Article] The article of the present invention (hereinafter referred to as "the Article") has a surface layer formed from a specific polymer or the surface treatment agent on the surface of a substrate. An example of the Article will be described with reference to the drawings. Figure 1 is a schematic cross-sectional view showing a first article, which is an example of the Article. The first article is an article 20 having a substrate 12, a base layer 14, and a surface layer 22 in that order, wherein the base layer 14 contains an oxide containing silicon, and the surface layer 22 contains a condensate of the specific polymer.

[0095] The material and shape of the substrate 12 may be appropriately selected according to the intended use of the article 20. Examples of materials for the substrate 12 include glass, resin, sapphire, metal, ceramic, stone, and composite materials thereof. The glass may be chemically strengthened. Examples of substrates 12 that require water-repellent and oil-repellent properties include substrates for touch panels, substrates for displays, and substrates that constitute the housing of electronic devices. Substrates for touch panels and substrates for displays are translucent. "Translucent" means that the normal incidence visible light transmittance in accordance with JIS R3106:1998 (ISO 9050:1990) is 25% or more. Glass or transparent resin is preferred as the material for the substrate for touch panels.

[0096] The substrate 12 may have surface treatments such as corona discharge treatment, plasma treatment, and plasma graft polymerization treatment applied to the surface on which the underlayer 14 is provided. Surface treatment further improves the adhesion between the substrate 12 and the underlayer 14, and as a result, the abrasion resistance of the surface layer 22 is further improved. As for the surface treatment, corona discharge treatment or plasma treatment is preferred because it further improves the abrasion resistance of the surface layer 22.

[0097] The base layer 14 is a layer containing an oxide that includes at least silicon, and may also contain other elements. The presence of silicon oxide in the base layer 14 causes specific reactive groups of the specific polymer to undergo dehydration condensation, forming Si-O-Si bonds between them and the base layer 14, resulting in a surface layer 22 with superior abrasion resistance.

[0098] The silicon dioxide content in the base layer 14 is preferably 65% ​​by mass or more, more preferably 80% by mass or more, even more preferably 85% by mass or more, and particularly preferably 90% by mass or more. If the silicon dioxide content is above the lower limit of the above range, sufficient Si-O-Si bonds are formed in the base layer 14, and the mechanical properties of the base layer 14 are sufficiently ensured. The silicon dioxide content is the remainder obtained by subtracting the total content of other elements (or the amount converted to oxides in the case of oxides) from the mass of the base layer 14.

[0099] From the standpoint of excellent abrasion resistance of the surface layer 22, it is preferable that the oxide in the base layer 14 further contains one or more elements selected from alkali metal elements, alkaline earth metal elements, platinum group elements, boron, aluminum, phosphorus, titanium, zirconium, iron, nickel, chromium, molybdenum, and tungsten. By including these elements, the bond between the base layer 14 and the specific polymer is strengthened, improving abrasion resistance.

[0100] The thickness of the base layer 14 is preferably 1 to 200 nm, and more preferably 2 to 20 nm. If the thickness of the base layer 14 is above the lower limit of the above range, the adhesive improvement effect of the base layer 14 is easily obtained. If the thickness of the base layer 14 is below the upper limit of the above range, the abrasion resistance of the base layer 14 itself is increased. Methods for measuring the thickness of the base layer 14 include cross-sectional observation of the base layer 14 using an electron microscope (SEM, TEM, etc.), and methods using an optical interferometer, spectroscopic ellipsometer, or step meter.

[0101] Specific examples of methods for forming the underlayer 14 include a method of depositing a vapor deposition material having the desired underlayer 14 composition onto the surface of the substrate 12. One example of a vapor deposition method is the vacuum vapor deposition method. The vacuum vapor deposition method involves evaporating the vapor deposition material in a vacuum chamber and depositing it onto the surface of the substrate 12. The temperature during vapor deposition (for example, the temperature of the boat in which the vapor deposition material is placed when using a vacuum vapor deposition apparatus) is preferably 100 to 3,000°C, and more preferably 500 to 3,000°C. The pressure during vapor deposition (for example, the absolute pressure in the chamber in which the vapor deposition material is placed when using a vacuum vapor deposition apparatus) is preferably 1 Pa or less, and more preferably 0.1 Pa or less. When forming the underlayer 14 using a vapor deposition material, one vapor deposition material may be used, or two or more vapor deposition materials containing different elements may be used. Examples of evaporation methods for the vapor deposition material include the resistance heating method, in which the vapor deposition material is melted and evaporated on a resistance heating boat made of high melting point metal, and the electron gun method, in which an electron beam is irradiated onto the vapor deposition material to directly heat the material, melt the surface, and evaporate it.

[0102] The surface layer 22 on the base layer 14 contains a condensate of a specific polymer. The condensate of the specific polymer includes those formed by the reaction and bonding of reactive groups in the specific polymer, and those formed by the reaction of reactive groups in the specific polymer with silanol groups or Si-OM groups (where M is an alkali metal element) on the surface of the base layer 14. The surface layer 22 may also contain condensates of compounds other than the specific polymer contained in this surface treatment agent. The surface layer 22 may contain a polymer having reactive groups in a state where some or all of the reactive groups of the polymer have undergone a condensation reaction.

[0103] The thickness of the surface layer 22 is preferably 1 to 100 nm, and more preferably 1 to 50 nm. If the thickness of the surface layer 22 is above the lower limit of the above range, the effect of the surface layer 22 can be sufficiently obtained. If the thickness of the surface layer 22 is below the upper limit of the above range, the utilization efficiency is high. The thickness of the surface layer 22 is the thickness obtained by an X-ray diffractometer for thin film analysis. The thickness of the surface layer 22 can be calculated from the vibration period of the interference pattern obtained by the X-ray reflectivity method using an X-ray diffractometer for thin film analysis.

[0104] Another example of the article of the present invention is a second article. The second article is an article 20 having a substrate 10 with a base layer and a surface layer 22 in that order, wherein the substrate 10 with the base layer contains an oxide containing silicon, and the surface layer 22 contains a condensate of a specific polymer. In the second article, since the substrate 10 with the base layer has the composition of the base layer 14 in the first article, the surface layer 22 has excellent abrasion resistance even when the surface layer 22 is directly formed on the substrate 10 with the base layer. The material of the substrate 10 with the base layer in the second article may be any material having the composition of the base layer 14, for example, a glass substrate. Details of the material of the substrate 10 with the base layer are the same as those of the substrate 12 and the base layer 14, so a description is omitted here. Also, the composition of the surface layer 22 is the same as that of the first article, so a description is omitted here.

[0105] Specific examples of articles of the present invention include optical components, touch panels, anti-reflective films, anti-reflective glass, and SiO2 used as parts of the following products. ２ Examples include processed glass, tempered glass, sapphire glass, quartz substrates, and mold metals. Products include: car navigation systems, mobile phones, digital cameras, digital video cameras, personal digital assistants (PDAs), portable audio players, car audio systems, gaming devices, eyeglass lenses, camera lenses, lens filters, sunglasses, medical equipment (endoscopes, etc.), photocopiers, personal computers (PCs), liquid crystal displays, organic EL displays, plasma displays, touch panel displays, protective films, anti-reflective films, anti-reflective glass, nanoimprint templates, molds, etc.

[0106] [Method for Manufacturing Articles] The method for manufacturing articles of the present invention is to form a surface layer using a specific polymer or the surface treatment agent by a dry coating method or a wet coating method.

[0107] The specific polymer and this surface treatment agent can be used directly in a dry coating method and are suitable for forming a surface layer with excellent adhesion by the dry coating method. Examples of dry coating methods include vacuum deposition, CVD, and sputtering. Vacuum deposition is preferably used because it suppresses the decomposition of the specific polymer or this surface treatment agent and because of the simplicity of the equipment. For vacuum deposition, a pellet-like material in which the specific polymer is supported on a porous metal body made of metal material such as iron and steel may be used. The pellet-like material supported on the specific polymer can be manufactured by impregnating a porous metal body with a solution containing the specific polymer and drying it to remove the liquid medium.

[0108] This surface treatment agent (coating solution) containing a liquid medium can be suitably used in wet coating methods. 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-Bludget coating, and gravure coating.

[0109] To improve the abrasion resistance of the surface layer, operations to promote the reaction between a specific polymer and the substrate may be performed as needed. Such operations include heating, humidification, and light irradiation. For example, heating a substrate with a surface layer formed in a humid atmosphere can promote reactions such as the hydrolysis of hydrolyzable groups, the reaction between hydroxyl groups on the substrate surface and silanol groups, and the formation of siloxane bonds through the condensation reaction of silanol groups. After surface treatment, compounds in the surface layer that are not chemically bonded to other compounds or the substrate may be removed as needed. Specific methods include pouring a solvent onto the surface layer and wiping it with a cloth soaked in a solvent.

[0110] The present invention will be described in detail below with reference to examples. Of Examples 1 to 8, Examples 1 to 7 are examples, and Example 8 is a comparative example. However, the present invention is not limited to these examples.

[0111] <Example 1> [Synthesis of Compound 1-1] 65 g of hexamethylcyclotrisiloxane was mixed with 101 g of THF (tetrahydrofuran) and stirred at 25°C until dissolved. After cooling the reaction mixture to -30°C, 100 mL of methyllithium diethoxymethane solution (3.1 M concentration) was added to the reaction mixture and stirred at -30°C for 2 hours. 100 g of chlorodimethylsilane was added to the reaction mixture and stirred at -30°C for 1 hour. After raising the temperature to 25°C, the mixture was stirred for another hour. After removing the low-boiling components from the reaction mixture by distillation, hexane and water were added and liquid-liquid extraction was performed to separate the organic phase. The organic phase was purified by distillation to obtain 65 g of Compound 1-1. The structures of each compound synthesized in this example were confirmed by their respective NMR spectra.

[0112]

[0113] (NMR spectrum of compound 1-1) 1 H-NMR (400 MHz, CDCl3) δ 4.71 (p, J = 2.8 Hz, 1H), 0.50 - -0.23 (m, 27H).

[0114] [Synthesis of Compound 1-2] Compound 1-1 (50 g) was dissolved in toluene (100 g). To the resulting solution, a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3% by mass, 50 g), aniline (2.6 mg), and allylamine (50 g) were added, and the reaction mixture was stirred at 70°C for 24 hours. After removing the solvent from the reaction mixture under reduced pressure, the mixture was purified by flash column chromatography using silica gel (developing solvent: dichloromethane / methanol) to obtain 45 g of compound 1-2.

[0115]

[0116] (NMR spectra of compounds 1-2) 1 H NMR (400 MHz, CDCl3) δ 2.67 (p, J = 6.1 Hz, 2H), 1.64 - 1.36 (m, 2H), 0.75 (t, J = 7.9 Hz, 2H), 0.50 - -0.23 (m, 27H).

[0117] [Synthesis of Compound 1-3] Compound 1-2 (45 g) was dissolved in dichloromethane (100 g). Acryloyl chloride (50 g) and triethylamine (100 g) were added to the resulting solution, and the reaction mixture was stirred at 0°C for 24 hours. After removing the solvent from the reaction mixture under reduced pressure, the mixture was purified by flash column chromatography using silica gel (developing solvent: dichloromethane / methanol) to obtain 35 g of compound 1-3.

[0118]

[0119] (NMR spectra of compounds 1-3) 1 H NMR (400 MHz, CDCl3) δ 6.45 - 5.56 (m, 4H), 3.06 (td, J = 6.3, 5.2 Hz, 2H), 1.74 - 1.39 (m, 2H), 0.72 (t, J = 8.2 Hz, 2H), 0.50 - -0.23 (m, 27H).

[0120] [Synthesis of Polymer 1-4] Compound 1-3 (25 g), 3-mercaptopropyltrimethoxysilane (3.5 g), dimethylformamide (50 g), and 0.25 g of 2,2'-azobis(2,4-dimethylvaleronitrile) were mixed, and the mixture was heated to 65°C under a nitrogen stream to initiate the reaction. After stirring the reaction mixture at 65°C for 6 hours, it was cooled to room temperature and added to 3 L of ethyl acetate, whereupon a solid precipitated. The precipitated solid was filtered off, thoroughly washed with ethyl acetate, and dried to obtain polymer 1-4 (yield 18 g). The weight-average molecular weight Mw (polystyrene standard) of polymer 1-4, measured by GPC, was 12,000. In the structural formula, * indicates the bond position to the polymer. Polymer 1-4 has "(MeO)" at the end of the polymer chain. ３ Si(CH) ２ ) ３ It has a group represented as "S-".

[0121]

[0122] <Example 2> [Synthesis of Compound 2-1] Except for using 1,1,1,3,3,5,5-heptamethyltrisiloxane (50 g) instead of compound 1-1 (50 g), 37 g of compound 2-1 was obtained in the same manner as described in [Synthesis of Compound 1-2].

[0123]

[0124] (NMR spectrum of compound 2-1) 1 H NMR (400 MHz, CDCl3) δ 2.67 (p, J = 6.1 Hz, 2H), 1.59 - 1.35 (m, 2H), 0.75 (t, J = 7.9 Hz, 2H), 0.50 - -0.23 (m, 21H).

[0125] [Synthesis of Compound 2-2] 42 g of Compound 2-2 was obtained in the same manner as described in [Synthesis of Compound 1-3], except that Compound 2-1 (37 g) was used instead of Compound 1-2 (45 g).

[0126]

[0127] (NMR spectrum of compound 2-2) 1 H NMR (400 MHz, CDCl3) δ 6.50 - 5.62 (m, 4H), 3.06 (td, J = 6.3, 5.2 Hz, 2H), 1.62 - 1.37 (m, 2H), 0.72 (t, J = 8.2 Hz, 2H), 0.50 - -0.23 (m, 21H).

[0128] [Synthesis of Polymer 2-3] Polymer 2-3 was obtained in the same manner as described in [Synthesis of Polymer 1-4], except that compound 2-2 (25 g) was used instead of compound 1-3 (25 g) (yield 22 g). The weight-average molecular weight Mw (polystyrene standard) of polymer 2-3, measured by GPC, was 10,500. In the structural formula, * indicates the bond position to the polymer. Polymer 2-3 has "(MeO)" at the end of the polymer chain. ３ Si(CH) ２ ) ３ It has a group represented as "S-".

[0129]

[0130] <Example 3> [Synthesis of Compound 3-1] 45 g of Compound 3-1 was obtained in the same manner as described in [Synthesis of Compound 1-3], except that 3-aminopropylpentamethyldisiloxane (40 g) was used instead of Compound 1-2 (45 g).

[0131]

[0132] (NMR spectrum of compound 3-1) 1 H NMR (400 MHz, CDCl3) δ 6.48 - 5.70 (m, 4H), 3.06 (td, J = 6.3, 5.2 Hz, 2H), 1.67 - 1.34 (m, 2H), 0.70 (t, J = 8.2 Hz, 2H), 0.50 - -0.23 (m, 15H).

[0133] [Synthesis of Polymer 3-2] Polymer 3-2 was obtained in the same manner as described in [Synthesis of Polymer 1-4], except that compound 3-1 (25 g) was used instead of compound 1-3 (25 g) (yield 16 g). The weight-average molecular weight Mw (polystyrene standard) of polymer 3-2, measured by GPC, was 9,000. In the structural formula, * indicates the bond position to the polymer. Polymer 3-2 has "(MeO)" at the end of the polymer chain. ３ Si(CH) ２ ) ３ It has a group represented as "S-".

[0134]

[0135] <Example 4> [Synthesis of Compound 4-1] 44 g of Compound 4-1 was obtained in the same manner as described in [Synthesis of Compound 1-3], except that (3-aminopropyl)trimethylsilane (40 g) was used instead of Compound 1-2 (45 g).

[0136]

[0137] (NMR spectrum of compound 4-1) 1H NMR (400 MHz, CDCl3) δ 6.49 - 5.64 (m, 4H), 3.04 (td, J = 6.2, 5.3 Hz, 2H), 1.65 - 1.19 (m, 2H), 0.59 (t, J = 8.3 Hz, 2H), -0.13 (s, 9H).

[0138] [Synthesis of Polymer 4-2] Polymer 4-2 was obtained in the same manner as described in [Synthesis of Polymer 1-4], except that compound 4-1 (25 g) was used instead of compound 1-3 (25 g) (yield 16 g). The weight-average molecular weight Mw (polystyrene standard) of polymer 4-2, measured by GPC, was 14,000. In the structural formula, * indicates the bond position to the polymer. Polymer 4-2 has "(MeO)" at the end of the polymer chain. ３ Si(CH) ２ ) ３ It has a group represented as "S-".

[0139]

[0140] <Example 5> [Synthesis of Compound 5-1] Compound 1-1 (100 g) was mixed with dichloromethane (1,000 g) and trichloroisocyanuric acid (140 g) and stirred at 25°C for 3 hours. The reaction mixture was filtered to remove insoluble matter, and the low-boiling components were removed from the filtrate. Water (200 g), THF (400 g), and triethylamine (100 g) were added to the crude solution and stirred at 25°C for 2 hours. Hexane and water were added to the reaction mixture and liquid-liquid extraction was performed to separate the organic phase, and the low-boiling components were removed from the organic phase. Chlorodimethylsilane (100 g), triethylamine (200 g), and dichloromethane (1,000 g) were added to the crude solution and stirred at 25°C for 3 hours. The reaction mixture was filtered to remove insoluble matter, and the filtrate was purified by distillation to obtain 55 g of Compound 5-1.

[0141]

[0142] (NMR spectrum of compound 5-1) 1 H NMR (400 MHz, CDCl3) δ 4.89-4.23 (m, 1H), 0.50 - -0.23 (m, 33H).

[0143] [Synthesis of Compound 5-2] Except for using Compound 5-1 (50 g) instead of Compound 1-1 (50 g), 35 g of Compound 5-2 was obtained in the same manner as described in [Synthesis of Compound 1-2].

[0144]

[0145] (NMR spectrum of compound 5-2) 1 H NMR (400 MHz, CDCl3) δ 2.67 (p, J = 6.1 Hz, 2H), 1.59 - 1.33 (m, 2H), 0.75 (t, J = 7.9 Hz, 2H), 0.26 - -0.36 (m, 33H).

[0146] [Synthesis of Compound 5-3] Compound 5-3 was obtained in the same manner as described in [Synthesis of Compound 1-3], except that compound 5-2 (50 g) was used instead of compound 1-2 (45 g).

[0147]

[0148] (NMR spectrum of compound 5-3) 1 H NMR (400 MHz, CDCl3) δ 6.45 - 5.64 (m, 4H), 3.06 (td, J = 6.3, 5.2 Hz, 2H), 1.64 - 1.33 (m, 2H), 0.72 (t, J = 8.2 Hz, 2H), 0.27 - -0.21 (m, 33H).

[0149] [Synthesis of Polymer 5-4] Polymer 5-4 was obtained in the same manner as described in [Synthesis of Polymer 1-4], except that compound 5-3 (25 g) was used instead of compound 1-3 (25 g) (yield 12 g). The weight-average molecular weight Mw (polystyrene standard) of polymer 5-4, measured by GPC, was 13,000. In the structural formula, * indicates the bond position to the polymer. Polymer 5-4 has "(MeO)" at the end of the polymer chain. ３ Si(CH) ２ ) ３ It has a group represented as "S-".

[0150]

[0151] <Example 6> [Synthesis of Compound 6-1] Compound 1-1 (50 g) was mixed with dichloromethane (100 g) and 18-bromo-1-octadecene (50 g) and stirred at 25°C until uniformly dissolved. To the resulting solution, a toluene solution of platinum / 1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex (platinum content: 3% by mass, 0.5 g) was added, and the reaction mixture was stirred at 25°C for 2 hours. After removing the low-boiling point components from the reaction mixture under reduced pressure, the mixture was purified by flash column chromatography using silica gel (developing solvent: hexane / dichloromethane) to obtain 76 g of compound 6-1.

[0152]

[0153] (NMR spectrum of compound 6-1) 1 H NMR (400 MHz, CDCl3) δ 3.41 (t, J = 6.9 Hz, 2H), 1.94 - 1.78 (m, 2H), 1.52 - 1.10 (m, 30H), 0.53 (t, J = 7.7 Hz, 2H), 0.39 - -0.24 (m, 27H).

[0154] [Synthesis of Compound 6-2] Compound 6-1 (50 g) was mixed with DMF (N,N-dimethylformamide, 100 mL) and sodium azide (20 g) and heated and stirred at 60°C for 4 hours. Water and hexane were added to the reaction mixture and liquid-liquid extraction was performed to separate the organic phase, from which DMF was removed by vacuum distillation. THF (100 mL) and lithium aluminum hydride (10 g) were added to the resulting crude solution and stirred at 0°C for 1 hour. Sodium sulfate decahydrate was added to the reaction mixture until no more bubbles were generated, and then insoluble matter was removed by filtration. Low-boiling point components were removed from the filtrate by vacuum distillation, and then the mixture was purified by flash column chromatography using silica gel (developing solvent: dichloromethane / methanol) to obtain 31 g of compound 6-2.

[0155]

[0156] (NMR spectrum of compound 6-2) 1H NMR (400 MHz, CDCl3) δ 2.68 (tt, J = 6.5, 5.2 Hz, 2H), 1.85 (tt, J = 7.4, 5.2 Hz, 2H), 1.67 - 1.13 (m, 30H), 0.71 (t, J = 8.3 Hz, 2H), 0.39 - -0.24 (m, 27H).

[0157] [Synthesis of Compound 6-3] Compound 6-3 was obtained in the same manner as described in [Synthesis of Compound 1-3], except that compound 6-2 (30 g) was used instead of compound 1-2 (45 g).

[0158]

[0159] (NMR spectrum of compound 6-3) 1 H NMR (400 MHz, CDCl3) δ 6.82 - 5.63 (m, 4H), 3.17 (q, J = 5.7 Hz, 2H), 1.67 - 1.06 (m, 32H), 0.71 (t, J = 8.3 Hz, 2H), 0.39 - -0.24 (m, 27H).

[0160] [Synthesis of Polymer 6-4] Polymer 6-4 was obtained in the same manner as described in [Synthesis of Polymer 1-4], except that compound 6-3 (25 g) was used instead of compound 1-3 (25 g) (yield 6.0 g). The weight-average molecular weight Mw (polystyrene standard) of polymer 6-4, measured by GPC, was 18,000. In the structural formula, * indicates the bond position to the polymer. Polymer 6-4 has "(MeO)" at the end of the polymer chain. ３ Si(CH) ２ ) ３ It has a group represented as "S-".

[0161]

[0162] <Example 7> [Synthesis of Polymer 7-1] Compound 1-3 (25 g), 3-acrylamidopropyltrimethoxysilane (10 g), methanol (70 g), and 1.3 g of 2,2'-azobis(2-methylpropionic acid)dimethyl were mixed, and the mixture was heated to 80°C under a nitrogen stream to start the reaction. The reaction mixture was stirred at 65°C for 6 hours, and then cooled to room temperature. The reaction mixture was added to 2 L of acetone, and the precipitated solid was allowed to settle. The precipitated solid was filtered off, washed with ethyl acetate, and dried to obtain polymer 7-1 (yield 10.0 g). The weight-average molecular weight Mw (polystyrene standard) of polymer 7-1, measured by GPC, was 23,000. Note that the structural formula of polymer 7-1 shown below does not mean that each repeating unit is bonded in the order shown in the following structural formula.

[0163]

[0164] <Example 8> [Synthesis of Polymer 8-1] Polymer 8-1 was obtained according to the method described in Synthesis Example 2 of Japanese Patent Application Publication No. 2017-201010. The average value of the number of repeating units n was 9. The weight-average molecular weight Mw (polystyrene standard) of polymer 8-1, measured by GPC, was 1,100.

[0165]

[0166] [Manufacturing of Articles] Using n-heptane as a liquid medium, each compound was mixed with n-heptane to obtain a surface treatment agent in which the solid content concentration of each compound was 0.2% by mass. The substrate was surface-treated using the surface treatment agent to manufacture an article having a substrate and a surface layer. The following wet coating method was used as the surface treatment method.

[0167] <Wet Coating Method> 30g of silicon dioxide was placed as a deposition source in the copper hearth inside the vacuum deposition apparatus (ULVAC KIKO "VTR-350M"). A glass substrate was placed inside the vacuum deposition apparatus, and the inside of the vacuum deposition apparatus was 5 × 10 －３ The system was evacuated until the pressure was below Pa. The hearth was heated to approximately 2,000°C, and silicon dioxide was vacuum-deposited onto the surface of the substrate. This formed a silicon dioxide layer approximately 20 nm thick on the substrate.

[0168] A substrate with a silicon oxide layer formed on it was placed on the sample stage of a spray coater (API-90RS, manufactured by Apiros Co., Ltd.) with the silicon oxide layer facing upwards. Next, 13 g of the prepared surface treatment agent was put into a syringe inside the spray coater and sprayed onto the substrate at an atomization pressure of 130 kPa, a nozzle-to-sample surface distance of 50 mm, and a scanning speed of 300 mm / second. After that, the coated substrate was heat-treated at 140°C for 30 minutes. This resulted in obtaining an article having a substrate, a silicon oxide layer, and a surface layer.

[0169] [Evaluation] <Fingerprint Removal Performance> A 1 kg weight equipped with a 2 cm diameter red rubber stopper to serve as the fingerprint stamp portion was prepared. Next, 70 μL of artificial fingerprint solution (manufactured by Isekyu Co., Ltd.) was dropped onto a cloth, and the fingerprint stamp was left in the solution for 1 minute. To remove excess artificial fingerprint solution from the fingerprint stamp, the stamp was left on a new cloth for 20 seconds. After that, an article with a surface layer formed on it was placed on a hot plate heated to 23°C. The fingerprint stamp was pressed onto the surface layer. The article with the artificial fingerprint solution attached was placed in a sliding device (product name "HHS-2000", manufactured by Shinto Kagaku Co., Ltd.). A flat indenter with an area of ​​1 cm square was attached to a wiping cloth (Savina Minimax, manufactured by KB Seiren Co., Ltd.) using double-sided tape, and placed in the sliding device. With a load of 500 g, the attached artificial fingerprint solution was wiped off the surface layer in one direction with the wiping cloth. The haze of the wiped area was measured using a haze meter (product name "NDH7000SP", Nippon Denshoku Industries Co., Ltd.), and the fingerprint removal performance was evaluated based on the obtained haze value. The evaluation criteria for fingerprint removal performance are as follows: A: Haze value less than 0.3% B: Haze value 0.3% or more and less than 1.0% C: Haze value 1.0% or more

[0170] <Durability> A rubbing test was conducted by rubbing the surface layer (coating film) 500 times back and forth with a dishwashing sponge (manufactured by 3M) soaked in tap water. Afterwards, the haze was measured in the area where artificial fingerprint solution was wiped off using the same method as the fingerprint removal test, and the durability was evaluated based on the obtained haze value. The evaluation criteria for durability are as follows: A: Haze value less than 0.3% B: Haze value 0.3% or more and less than 1.0% C: Haze value 1.0% or more and less than 2.0% D: Haze value 2.0% or more

[0171] The following table shows the polymer structure of each example and the evaluation results. Each polymer synthesized in Examples 1 to 7 has a unit 1 in formula (1), where R represents a hydrogen atom, X represents -NH-, p represents 0, and m and n represent the numerical values ​​listed in the corresponding columns in the table.

[0172]

[0173] As shown in Table 1, it was found that by using surface treatment agents containing the polymers of Examples 1 to 7, a surface layer with excellent fingerprint removal properties and durability can be formed.

[0174] Articles having a surface layer formed using a specific polymer include, as an example, optical articles, touch panels, anti-reflective films, anti-reflective glass, and SiO2 used as parts of the following products. ２ It is useful as processed glass, tempered glass, sapphire glass, quartz substrates, mold metals, etc. Products: Car navigation systems, mobile phones, digital cameras, digital video cameras, personal digital assistants (PDAs), portable audio players, car audio systems, game consoles, eyeglass lenses, camera lenses, lens filters, sunglasses, medical equipment (endoscopes, etc.), photocopiers, personal computers (PCs), liquid crystal displays, organic EL displays, plasma displays, touch panel displays, protective films, anti-reflective films, anti-reflective glass, nanoimprint templates, molds, etc.

[0175] This application claims priority based on Japanese Patent Application No. 2024-232446, filed on 27 December 2024, and incorporates all of its disclosures herein.

[0176] 10 Substrate with undercoat 12 Substrate 14 Undercoat 20 Article 22 Surface layer

Claims

1. A polymer containing a repeating unit represented by formula (1) and having a reactive group. -(CH １ -CR[C(=O)X-CH ２ -(CH ２ ) ｍ -CH ２ -(Si(CH ３ ) ２ -O) ｎ -(SiR １ R ２ -O) ｐ -Si(CH ３ ) ３ )- (1) In formula (1), R represents a hydrogen atom, an alkyl group, or a halogen atom. X represents -O-, -NR ａ -, -O-L １ -OC(=O)-, -O-L １ -NR ｂ C(=O)-, -NR ａ -L １ -OC(=O)-, or -NR ａ -L １ -NR ｂ C(=O)-. R ａ represents a hydrogen atom or an alkyl group. L １ represents an alkylene group having 2 to 18 carbon atoms. R ｂ represents a hydrogen atom or an alkyl group. m represents an integer from 1 to 30. n represents an integer from​​​​​​​​​​​​​​ 2. The reactive group is -Ar １ , -SR １０ , -NOR １０ , -C(=O)R １０ , -N(R １０ ), -N ２ , -N ＋ (R １０ ), -NX ３ , -C≡N, -C(=NR ３ ), -R １０ , -N １０ , -NX ＋ , -N=NR ３ , -C(=O)OR １０ , -C(=O)OX １０ , -C(=O)X ２ , -C(=O)OC(=O)R<000005'0>, -O-C(=O)-CH １０ =CH ２ -C(=O)OR [[ID=4'1]] ２ , -SO １０ R ２ , -SO １０ , -SO ２ X<000005'8>, -SO ３ H, -SO ３ X<000'0061>, -P(=O)(-OR １０ ), -O-P(=O)(-OR ２ ), -O-P(=O)(-OR １０ )(-OX ２ ), -N=C=O, -N=C=S, -SiR ' １０ ２ ａ１ ｚ１ ａ１１ ３－ｚ１ [[ID=7'3]] １０ ２ ２ , -SiH(R ４ ), -Si(-OCH ３ ３ H ３ -OCH ２ ), -Si[-N(CH ３ １０ ), -C≡C(R １０ ), -C(=O)N(R ２ ), -N(R １０ ), -C(=O)R １０ ), -Si(R １０ ), -Si(R ２ ), -Si(R [[ID='03]] ２ ), -Si(R １０ ), -Si(R ２ -CH ２ -Si(R １０ ) ３ , -NH-C(=O)R １０ , -C(=O)NHR １０ , -I, -Br, -B(OH) ２ , -N ３ , The polymer according to claim 1, which is any one of the following: However,R １０ is a hydrogen atom, an optionally substituted alkyl group having 1 to 6 carbon atoms, or an optionally substituted aryl group; Ar １ is an optionally substituted aryl group; X ２ is an alkali metal ion or an ammonium ion; X ３ is a halide ion; X ４ is a halogen atom; R ａ１ is a hydrolyzable group, a group having a hydrolyzable group, or a hydroxyl group; R ａ１１ is a hydrocarbon group; z1 is an integer from 1 to 3; Et is an ethyl group; When there are a plurality of R １０ , R ａ１ or R ａ１１ , the plurality of R<00​​​​ 3. The polymer according to claim 1, wherein the polymer further comprises repeating units having the reactive group, or the polymer chain comprising repeating units represented by formula (1) has the reactive group at its terminal.

4. The polymer according to claim 1, wherein n represents an integer from 0 to 4.

5. The polymer according to claim 1, wherein n represents an integer from 1 to 3.

6. The polymer according to claim 1, wherein m represents an integer from 12 to 30.

7. A surface treatment agent comprising the polymer described in any one of claims 1 to 6.

8. The surface treatment agent according to claim 7, further comprising a liquid medium.

9. The surface treatment agent according to claim 7, which is an antifouling coating agent or a waterproof coating agent.

10. The surface treatment agent according to claim 8, which is an antifouling coating agent or a waterproof coating agent.

11. An article having a surface layer formed using a polymer according to any one of claims 1 to 6 on the surface of a substrate.

12. The article according to claim 11, which is an optical component.

13. The article according to claim 11, wherein the surface layer is provided on the surface of a component that constitutes the surface of a touch panel that is touched by a finger.

14. A method for manufacturing an article, comprising forming a surface layer by a dry coating method using the surface treatment agent described in claim 7.

15. A method for manufacturing an article, comprising forming a surface layer by a dry coating method using the surface treatment agent described in claim 8.

16. A method for manufacturing an article, comprising forming a surface layer by a wet coating method using the surface treatment agent described in claim 8.

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