Solid matter, optical member, method for manufacturing solid matter, material for surface formation, surface formation method, spectacles, touch panel, smartphone, and tablet terminal

Abstract

This solid matter comprises a base layer, a portion having an alkyl group on the base layer, and a polyolefin, and is characterized in that: the portion having an alkyl group is bonded to the base layer via oxygen atoms and has an alkyl group with a carbon number of 14-70; the polyolefin is disposed on the side of the portion having an alkyl group when viewed from the base layer; the polyolefin has at least one branch; the median of the carbon numbers of the polyolefin is 14-1000; and, in the solid matter, the value of the mass-based ratio of the content of the polyolefin to the content of the portion having an alkyl group is 1.00-15.00.

Description

Solid body, optical member, method for manufacturing solid body, surface forming material, surface forming method, eyeglasses, touch panel, smartphone, and tablet terminal

[0001] The present disclosure relates to a solid material having excellent scratch resistance and ethanol resistance, a method for producing the same, an optical element having the solid material, and eyeglasses, a touch panel, a smartphone, and a tablet terminal having the optical element.

[0002] Optical components such as optical filters and eyeglass lenses, as well as products such as touch panels and smartphones, have an anti-fouling film formed on their outermost surface to prevent adhesion of dirt such as fingerprints, sebum, sweat, and cosmetics and to facilitate removal. Anti-fouling films are required to have excellent anti-fouling properties (water repellency and oil repellency) and scratch resistance, and organic fluorine-containing compounds (PFAS), such as perfluorooctanoic acid (PFOA) and perfluorosulfonic acid (PFOS), are often used. However, PFAS is a substance that may have an impact on the environment and ecosystems, and various countries are currently considering regulating it. As a result, it may become impossible to use PFAS in anti-fouling films in the future. Therefore, there is a demand for anti-fouling films that do not contain PFAS.

[0003] As a PFAS-free antifouling film, a solid material having a silicon oxide-containing layer and a long-chain alkyl bonded to the layer via an oxygen atom has been disclosed (Patent Document 1). Patent Document 1 discloses that the surface of the solid material has excellent properties in both scratch resistance and long-term antifouling properties.

[0004] International Publication No. 2024 / 154562

[0005] The inventors have conducted studies and found that the solid material disclosed in Patent Document 1 has excellent properties in terms of scratch resistance and long-term stain resistance. However, the inventors have found that the solid material disclosed in Patent Document 1 does not have sufficient ethanol resistance. If the ethanol resistance of the solid material is insufficient, the water repellency of the surface may not be sufficiently sustained when ethanol is used to clean the solid material.

[0006] The present disclosure provides a solid object having a surface that is both highly scratch-resistant and ethanol-resistant, a method for producing the same, and optical components, eyeglasses, touch panels, smartphones, and tablet terminals.

[0007] The solid material of the present disclosure is a solid material comprising: a base layer; a portion on the base layer having an alkyl group; and a polyolefin, wherein the portion having an alkyl group is bonded to the base layer via an oxygen atom and has an alkyl group having 14 to 70 carbon atoms; the polyolefin is arranged on the side of the portion having the alkyl group as viewed from the base layer; the polyolefin has at least one branch; the median carbon number of the polyolefin is 14 to 1,000; and the mass ratio of the content of the polyolefin to the content of the portion having the alkyl group is 1.00 to 15.00 in the solid material.

[0008] The optical member of the present disclosure is an optical member having the above solid material. The eyeglasses of the present disclosure are eyeglasses having the above optical member. The touch panel of the present disclosure is a touch panel having the above optical member. The smartphone of the present disclosure is a smartphone having the above optical member. The tablet terminal of the present disclosure is a tablet terminal having the above optical member.

[0009] The method for producing a solid material according to the present disclosure includes, in this order: a formation step of forming a base layer containing oxygen atoms; and a second vapor deposition step of vacuum-depositing a second vapor deposition material containing a first compound having a moiety having an alkyl group having from 14 to 70 carbon atoms and a hydroxyl group, and a second compound which is a polyolefin having at least one branch, to form the moiety having an alkyl group and the polyolefin, wherein the median carbon number of the polyolefin is from 14 to 1,000.

[0010] According to the present disclosure, it is possible to provide a solid object having a surface that is both excellent in scratch resistance and ethanol resistance, a method for producing the same, an optical element, eyeglasses, a touch panel, a smartphone, and a tablet terminal.

[0011] Schematic diagram showing the structure of a solid body of the present disclosure.

[0012] Preferred embodiments of the solid material and its manufacturing method, optical element, eyeglasses, smartphone, tablet device, surface-forming material, and surface-forming method according to the present disclosure will be described below. The present disclosure is not limited to the following embodiments. In the present disclosure, expressions such as "XX or more and YY or less" and "XX to YY" representing a numerical range refer to a numerical range including the lower and upper limits, which are the endpoints, unless otherwise specified. Furthermore, when a numerical range is described in stages, the upper and lower limits of each numerical range can be arbitrarily combined. In the present disclosure, expressions such as "at least one selected from the group consisting of XX, YY, and ZZ" refer to any of XX, YY, ZZ, a combination of XX and YY, a combination of XX and ZZ, a combination of YY and ZZ, or a combination of XX, YY, and ZZ. When XX is a group, multiple XXs may be selected, and the same applies to YY and ZZ. In the present disclosure, a polymer brush refers to a structure in which string-like polymers are immobilized on the surface of a substrate, for example, a molecular organization in which string-like polymers are arranged like a brush on the surface of a substrate.

[0013] The solid material described in Patent Document 1 has a polymer brush on a silicon oxide-containing layer, and the polymer brush has a moiety having an alkyl group with a specific carbon number, resulting in a solid material having a surface excellent in scratch resistance and long-term antifouling properties. However, as described above, the present inventors have found that the ethanol resistance of the solid material described in Patent Document 1 is not necessarily sufficient.

[0014] According to the present disclosure, a solid material has a moiety having an alkyl group, the moiety having an alkyl group bonded to a base layer via an oxygen atom and having an alkyl group with a specific carbon number, and the solid material further comprises a polyolefin, the polyolefin having a specific carbon number and at least one branch, and the polyolefin is present on the alkyl group side of the base layer at a specific ratio relative to the content of the alkyl group moiety. This is thought to facilitate the formation of a high-density, intricately entangled molecular organization. It is believed that this solid material has a surface with excellent scratch resistance and ethanol resistance. This is thought to be due to the fact that the solid material has a moiety having an alkyl group and a polyolefin, the alkyl group moiety having an alkyl group with a carbon number of 14 to 70, the median carbon number of the polyolefin being 14 to 1000, and the polyolefin having at least one branch. When the polyolefin has one or more branches, the affinity between the alkyl group moiety and the polyolefin is increased. Therefore, it is thought that a high-density, intricately entangled molecular organization is easily formed. It is thought that this solid material has a surface with excellent scratch resistance and ethanol resistance.

[0015] Furthermore, according to the manufacturing method of the present disclosure, by forming a solid by vacuum-depositing a second deposition material including a first compound having a moiety with an alkyl group having a specific number of carbon atoms and a hydroxyl group, and a second compound which is a polyolefin having at least one branch and a specific number of carbon atoms, it is believed that, for the reasons described above, it is possible to manufacture a solid having a surface with excellent scratch resistance and ethanol resistance.

[0016] <Solid> A solid having a surface according to the present disclosure will be described. The solid has a base layer, a moiety having an alkyl group on the base layer, and a polyolefin. The moiety having an alkyl group has an alkyl group having 14 to 70 carbon atoms. The moiety having an alkyl group is bonded to the base layer via an oxygen atom. In addition, the polyolefin is disposed on the side of the moiety having an alkyl group as viewed from the base layer. Furthermore, the polyolefin has at least one branch. The median carbon number of the polyolefin is 14 to 1,000. Furthermore, in the solid, the mass-based ratio of the polyolefin content to the alkyl group content is 1.00 to 15.00.

[0017] The alkyl group moiety has an alkyl group having a carbon number of 14 to 70. The number of carbon atoms in the alkyl group is preferably 16 to 60, more preferably 18 to 60, and even more preferably 18 to 40. The alkyl group may be linear or branched, but is preferably a linear alkyl group. The alkyl group moiety preferably has a linear aliphatic structure, more preferably a linear alkyl group. When the solid has such a structure and contains a polyolefin, as described below, it is believed that a more densely intertwined molecular organization is more likely to be formed. This results in a solid having a surface with excellent scratch resistance and ethanol resistance. It is preferable that the solid has a polymer brush on a base layer, and the alkyl group moiety forms a polymer brush.

[0018] The alkyl group-containing moiety is represented by the general formula: ｎ H ２ｎ＋１]-. In the formula, n represents the number of carbon atoms in the alkyl group, with n preferably ranging from 14 to 70, more preferably from 16 to 60, even more preferably from 18 to 60, and particularly preferably from 18 to 40. When the number of carbon atoms in the alkyl group is within the above range and the solid contains a polyolefin having at least one branch, as described below, it is believed that a more densely and intricately entangled molecular structure is more likely to be formed. This results in a solid having a surface with excellent scratch resistance and ethanol resistance. When the number of carbon atoms is less than 14, it is difficult to form a densely and intricately entangled molecular structure, resulting in reduced scratch resistance and ethanol resistance. When the number of carbon atoms exceeds 70, it is difficult to form a densely and intricately entangled molecular structure, resulting in reduced scratch resistance and ethanol resistance. The number of carbon atoms in the alkyl group can be adjusted by changing the type of the first compound having an alkyl group and a hydroxyl group.

[0019] The alkyl group-containing moiety may further include an oxyethylene group -(CH ２ ) ２ -O- and oxypropylene group -(CH(CH ３ ) CH ２ The moiety having an alkyl group and an oxyethylene group may be a group represented by the general formula: [C ｎ’ H ２ｎ’＋１ ]-O-[(CH ２ ) ２ O] ｍ-. In the formula, n' represents the number of carbon atoms in the alkyl group, and m represents the degree of polymerization of the oxyethylene group. In the moiety having an alkyl group and an oxyethylene group, n'+2m, which represents the total number of carbon atoms in the alkyl group and the oxyethylene group, is preferably in the range of 14 to 70, more preferably 16 to 60, even more preferably 18 to 60, and particularly preferably 18 to 40. The alkyl group may be linear or branched, but is preferably a linear alkyl group. Furthermore, the moiety having an alkyl group and an oxyethylene group is preferably a linear alkyl group having an oxyethylene group.

[0020] It is believed that when the total number of carbon atoms in the alkyl group and the oxyethylene group is within the above range, a high-density, intricately entangled molecular structure is easily formed. This makes it easy to obtain a solid having a surface with excellent scratch resistance and ethanol resistance. If the carbon number is less than 14, it becomes difficult to form a high-density, intricately entangled molecular structure, and scratch resistance and ethanol resistance tend to decrease. Furthermore, if the carbon number exceeds 70, it becomes difficult to form a high-density, intricately entangled molecular structure, and scratch resistance and ethanol resistance tend to decrease.

[0021] The degree of polymerization of the oxyethylene group is not particularly limited, but may be 1-20, 1-15, or 1-10.

[0022] The number of carbon atoms in the alkyl group, the total number of carbon atoms in the oxyalkylene group, and the degree of polymerization of the oxyalkylene group can be adjusted by changing the type of the first compound having a moiety having an alkyl group and an oxyalkylene group and a hydroxyl group.

[0023] The arrangement of polyolefins having at least one branch will be described below with reference to the drawings. Hereinafter, polyolefins having at least one branch may be simply referred to as polyolefins. Preferably, the polyolefins are intertwined with the alkyl group-containing moieties. Polyolefins 14 having at least one branch are arranged on the alkyl group-containing moiety 13 side as viewed from the base layer 12 ( FIG. 1 ). The arrangement of polyolefins 14 is not particularly limited as long as they are arranged on the alkyl group-containing moiety 13 side as viewed from the base layer 12. Examples of the arrangement of polyolefins 14 include those arranged on the base layer 12 ( FIGS. 2A and 2C ), those extending in a direction substantially perpendicular to the extension direction of the alkyl group-containing moiety 13, and those extending in a direction substantially parallel to the base layer 12 ( FIG. 2B ). More specifically, those include those in which polyolefins 14 on the base layer 12 coat the base layer 12 ( FIG. 2C ), and those in which polyolefins 14 on the base layer 12 extend in a direction substantially parallel to the extension direction of the alkyl group-containing moiety 13 ( FIG. 2A ).

[0024] The median carbon number of the polyolefin having at least one branch is 14 or more and 1000 or less. The median carbon number of the polyolefin is preferably 16 or more and 900 or less, more preferably 18 or more and 900 or less, and even more preferably 18 or more and 800 or less. In the present disclosure, the median carbon number of the polyolefin is a value determined from the weight average molecular weight of the polyolefin. Specifically, it is calculated by the following procedure.

[0025] The polyolefin is dissolved in trichlorobenzene at 150°C, filtered, and the resulting filtrate is used as a measurement sample and measured by gel permeation chromatography to determine the molecular weight distribution of the polyolefin and calculate the weight average molecular weight. ２ The value obtained by dividing by the molecular weight of methylene (14 g / mol) indicated by - is the median value of the carbon number of the polyolefin.

[0026] The median carbon number of the polyolefin can also be measured by measuring the solid matter according to the following procedure. A substrate having a coated solid matter is dissolved using an alkaline aqueous solution of sodium hydroxide (1 mol / L, 100 g), and then the component corresponding to the alkyl group moiety and the polyolefin are extracted using tetrahydrofuran. If the solid matter contains a linear polyolefin (described below), the linear polyolefin is also extracted. The component corresponding to the alkyl group moiety is alcohol (component A described below). Then, the component corresponding to the alkyl group moiety, the branched polyolefin, and the linear polyolefin are separated from the extract using high-performance liquid chromatography. Specific conditions are described below. The extracted branched polyolefin is measured using the above method to determine the median carbon number of the polyolefin.

[0027] The polyolefin has at least one branch. The number of branches of the polyolefin is preferably 1 to 300, more preferably 2 to 300, even more preferably 3 to 300, still more preferably 10 to 300, particularly preferably 50 to 300, and especially preferably 50 to 298, on average per molecule.

[0028] Examples of polyolefins having at least one branch include branched polyethylene and branched polypropylene. When the polyolefin is arranged on the alkyl group side as viewed from the base layer and has such a structure, it is believed that a high-density, intricately entangled molecular structure is likely to be formed for the reasons described above. This results in a solid having a surface with excellent scratch resistance and ethanol resistance. If the median carbon number of the polyolefin is less than 14, it is difficult to form a high-density, intricately entangled molecular structure, resulting in reduced scratch resistance and ethanol resistance. Furthermore, if the median carbon number of the polyolefin exceeds 1,000, it is difficult to form a high-density, intricately entangled molecular structure, resulting in reduced scratch resistance and ethanol resistance. If the polyolefin is only a linear polyolefin without branches, a high-density molecular structure is formed, but it is difficult to form a complexly entangled molecular structure, resulting in reduced ethanol resistance.

[0029] The carbon number and the number of branches of a polyolefin having at least one branch are measured by the following method. A substrate having a coated solid material is dissolved using an alkaline aqueous solution of sodium hydroxide (1 mol / L, 100 g), and then the component corresponding to the alkyl group moiety and the polyolefin are extracted using tetrahydrofuran. At this time, if the solid material contains a linear polyolefin described below, the linear polyolefin is also extracted. The component corresponding to the alkyl group moiety is alcohol (component A described below). Then, the component corresponding to the alkyl group moiety, the branched polyolefin, and the linear polyolefin are separated from the extract using high performance liquid chromatography. Specific conditions will be described later. The extracted branched polyolefin is then dissolved in a deuterated chloroform solution and subjected to DEPT measurement by NMR spectroscopy. １３A C-NMR spectrum and a DEPT spectrum at each flip angle are obtained. Analysis of the obtained spectrum confirms that the polyolefin has at least one branch. A polyolefin having at least one branch has a methine group or a quaternary carbon atom. That is, a polyolefin having a peak derived from a methine group or a peak derived from a quaternary carbon atom in the spectrum can be determined to have at least one branch. The ratios of methyl groups, methylene groups, methine groups, and quaternary carbon atoms can be quantified in the spectrum. The median number of methine groups and quaternary carbon atoms in the polyolefin can be calculated from the median number of carbon atoms estimated by the above method and the ratio. Using the median number of methine groups and quaternary carbon atoms obtained, the number of branches in the polyolefin is calculated as one branch per methine group and two branches per quaternary carbon atom.

[0030] The polyolefin having at least one branch is represented by the general formula: -[C ｍ H ２ｍ ]- and the general formula: -[C ｍ’ H ｍ’ ]- is preferred. A polyolefin may contain a plurality of these structures. Furthermore, the polyolefin is more preferably a compound having a methyl group at its terminal. The preferred range of m+m' in the formula is 12 or more and 980 or less, more preferably 14 or more and 880 or less, even more preferably 16 or more and 780 or less, and particularly preferably 16 or more and 680 or less. The preferred range of m in the formula is 11 or more and 979 or less, more preferably 12 or more and 879 or less, even more preferably 13 or more and 779 or less, and particularly preferably 14 or more and 630 or less. The preferred range of m' in the formula is 1 or more and 300 or less, more preferably 2 or more and 300 or less, even more preferably 3 or more and 300 or less, even more preferably 10 or more and 300 or less, particularly preferably 50 or more and 300 or less, and particularly preferably 50 or more and 298 or less.

[0031] In the solid material of the present disclosure, the mass ratio of the content of the polyolefin having at least one branch to the content of the alkyl group-containing moieties is 1.00 or more and 15.00 or less. Preferably, it is 1.50 or more and 15.00 or less, and more preferably, it is 2.75 or more and 10.00 or less. A mass ratio of the polyolefin content within the above range indicates the formation of a high-density molecular organization. Furthermore, it is possible to achieve better ethanol resistance. The mass ratio of the polyolefin content to the alkyl group-containing moieties is measured by the following method. A substrate having a coated solid material is dissolved using an alkaline aqueous solution of sodium hydroxide (1 mol / L, 100 g), and then the component corresponding to the alkyl group-containing moieties and the polyolefin are extracted using tetrahydrofuran. At this time, if the solid material contains a linear polyolefin as described below, the linear polyolefin is also extracted. The component corresponding to the alkyl group-containing moieties is alcohol (component A as described below). Thereafter, using high performance liquid chromatography, the component corresponding to the alkyl group-containing moiety, the branched polyolefin, and the linear polyolefin are separated from the extract under the following conditions, and each is quantified. When the mass of the component corresponding to the alkyl group-containing moiety quantified here is M1, the mass of the branched polyolefin is M2, and the mass of the linear polyolefin is M3, M2 / M1 represents the mass ratio of the branched polyolefin content to the alkyl group-containing moiety content in the solid. Furthermore, M3 / M1 represents the mass ratio of the linear polyolefin content to the alkyl group-containing moiety content in the solid.

[0032] (High-Performance Liquid Chromatography Conditions) An example of quantification using high-performance liquid chromatography is given below. A preparative high-performance liquid chromatography system is equipped with an InertSustain C18 preparative column manufactured by GL Sciences, and tetrahydrofuran is used as the developing solvent. The injection amount, flow rate, and number of recycles until separation are adjusted for each target to be separated.

[0033] The solid may further contain a linear polyolefin. The linear polyolefin is arranged on the alkyl group-containing moiety side as viewed from the base layer. The inclusion of a linear polyolefin in addition to a polyolefin having at least one branch facilitates the formation of a high-density, intricately entangled molecular structure, thereby enabling improved scratch resistance and ethanol resistance. The linear polyolefin is not particularly limited, and examples include linear polyethylene and linear polyolefin, with linear polyethylene being preferred. The median carbon number of the linear polyolefin is not particularly limited, but is preferably 14 to 70, and more preferably 20 to 60. The content of linear polyolefin in the solid is not particularly limited, but the mass ratio of the content of linear polyolefin to the content of alkyl group-containing moieties is preferably 0.01 to 1.00, and more preferably 0.10 to 0.50. The content of linear polyolefin in the solid is measured in the same manner as the mass ratio of the content of polyolefin having at least one branch to the content of alkyl group-containing moieties described above.

[0034] The base layer preferably contains oxygen atoms. The base layer may contain a metal oxide such as aluminum oxide, zirconium oxide, or titanium oxide, and preferably contains silicon oxide. When silicon oxide is contained, the silicon oxide is preferably SiO ｘ (x is, for example, 1 to 2), and compounds represented by the formula: ２ ・Al ２ O ３ SiO in complex inorganic oxides such as ２and the like. Here, the base layer is bonded to the alkyl group-containing moiety via an oxygen atom. That is, the alkyl group-containing moiety is bonded to the base layer via an oxygen atom. This improves the durability of the alkyl group-containing moiety and can improve the scratch resistance of the solid material. Here, the bond is a covalent bond. The bond via an oxygen atom may be a direct bond between the alkyl group-containing moiety and the base layer, or an indirect bond via another linking group. Furthermore, when the base layer contains oxygen atoms, active sites can be formed on the oxygen contained in the base layer. As a result, the alkyl group-containing moiety is more likely to bond to the base layer via the oxygen atom. That is, the alkyl group-containing moiety is more likely to be formed on the surface of the solid material. Methods for forming such active sites include a method of forming a base layer by the first vapor deposition process described below, and a method of modifying the surface by irradiating the substrate with ultraviolet light, plasma, or ion beams. Compounds that can be contained in the base layer include SiO ２ (silicon dioxide), Al ２ O ３ Added SiO ２ (alumina-added silicon dioxide), etc. However, the silicon oxide-containing compound is not limited to these. In addition, the oxygen-containing layer may be ITO (indium tin oxide), TiO ２ The inorganic oxide may be a composite oxide.

[0035] The solid material of the present disclosure preferably further contains a compound having a dimethyl silicone chain with a silicon number of 3 or more and 110 or less. The compound is preferably arranged on the side of the base layer that has the alkyl group. By including a compound having a dimethyl silicone chain, it is possible to further improve water repellency and oil repellency (stain resistance). The compound having a dimethyl silicone chain is represented by the general formula: -[Si(CH ３ ) ２ O] ｉ-. In the formula, i represents the degree of polymerization of the dimethylsilicone chain, i.e., the number of silicon atoms in the dimethylsilicone chain. The preferred range for i is 3 or more and 110 or less, more preferably 3 or more and 100 or less, and even more preferably 3 or more and 50 or less.

[0036] The compound having a dimethyl silicone chain may further have an alkylene group such as a methylene group or an ethylene group. The number of carbon atoms in the alkylene group is not particularly limited, but may be, for example, 1 to 6, 1 to 3, or 1 to 2. When the compound having a dimethyl silicone chain further has an alkylene group, the water repellency and oil repellency can be adjusted.

[0037] The molecular weight of the compound having a dimethylsilicone chain is preferably 200 or more and 8000 or less, more preferably 240 or more and 7600 or less, and even more preferably 300 or more and 7600 or less. It may also be 300 or more and 8000 or less. By having the molecular weight within the above range, it is possible to further improve the water repellency and oil repellency of the dimethylsilicone chain. By changing the type of the compound having a dimethylsilicone chain and the third compound having a reactive functional group, it is possible to adjust the number of silicon atoms in the dimethylsilicone chain, to have an alkylene group in the moiety having the dimethylsilicone chain, and to adjust the molecular weight of the moiety having the dimethylsilicone chain.

[0038] In the solid material of the present disclosure, the mass ratio of the moiety having a dimethylsilicone chain to the moiety having an alkyl group and the polyolefin having at least one branch is determined by measuring the surface of the solid material using a micro-Raman spectrometer, and calculating the sum of the peak intensity derived from the moiety having an alkyl group and the peak intensity derived from the polyolefin as P Ａ and the peak intensity derived from the compound having a dimethyl silicone chain is P Ｂ When P Ｂ / P Ａ It is expressed as: P Ｂ / P Ａis preferably 0.0 or more and 1.1 or less, more preferably 0.1 or more and 1.0 or less, and even more preferably 0.1 or more and 0.5 or less. By being in the above range, scratch resistance can be made more excellent. Ｂ / P Ａ may be 0.3 or more and 0.7 or less, and within this range, the solid matter can have better antifouling properties. Ｂ / P Ａ can be adjusted by changing the contents of the first compound and the second compound in the second vapor deposition material described below, or by changing the amount of the third compound added.

[0039] P Ｂ / P Ａ can be determined by the following method. The area on the surface of the solid to be measured with a micro-Raman spectrometer is determined. The area is determined by the magnification of the objective lens attached to the device, the wavelength of the excitation laser, and the aperture diameter. Hereinafter, the determined area will also be referred to as the measurement area. Next, the measurement area is irradiated with excitation laser light, and the generated scattered light is measured to obtain a peak. The measurement conditions are as follows: - Measurement device: Micro-Raman spectrometer manufactured by Thermo Fisher Scientific - Objective lens magnification: 10x - Excitation laser wavelength: 532 nm - Aperture diameter: 25 μm - Measurement area: 2 μm Of the peaks in the obtained Raman spectrum, the peaks derived from C-C bonds are considered to be peaks derived from the moiety having an alkyl group or peaks derived from the polyolefin, and the peak intensity of the peaks is determined as P Ａ Furthermore, among the peaks in the obtained Raman spectrum, the peak derived from the Si—C bond is regarded as the peak derived from the compound having a dimethyl silicone chain, and the peak intensity of this peak is expressed as P Ｂ The obtained P Ａ and P Ｂ From P Ｂ / P Ａ Calculate.

[0040] The solid material according to the present disclosure may have any material other than a polyolefin and a moiety having an alkyl group chemically bonded to the base layer via an oxygen atom, as long as the scratch resistance and ethanol resistance effects of the present disclosure are not impaired. The total content of the moiety having an alkyl group and the polyolefin in the total amount of materials constituting the base layer is preferably 80% by mass or more, more preferably 90% by mass or more, even more preferably 95% by mass or more, and particularly preferably 100% by mass. The upper limit is not particularly limited, but examples include 80 to 100% by mass, 90 to 100% by mass, and 95 to 100% by mass.

[0041] <Method for Producing Solid Material> Next, a method for producing a solid material according to the present disclosure will be described. The method for producing a solid material includes, in this order, a forming step of forming a base layer containing oxygen atoms, and a second vapor deposition step of vacuum-depositing a second vapor deposition material including a first compound having a moiety having an alkyl group having from 14 to 70 carbon atoms and a hydroxyl group, and a second compound which is a polyolefin having at least one branch, to form a moiety having an alkyl group and a polyolefin, wherein the central carbon number of the polyolefin is from 14 to 1,000.

[0042] The forming step may be, for example, a step of forming a base layer by vacuum-depositing a first deposition material containing oxygen atoms (first deposition step). By performing such a first deposition step, the base layer can be used as a foundation layer. By forming a layer containing oxygen atoms through the first deposition step, active sites can be formed in the layer. Known materials can be used as the substrate for the vacuum deposition. The first deposition material is not particularly limited as long as it contains oxygen atoms, but examples thereof include SiO ２ and Al ２ O ３ Added SiO ２ The first deposition material may further include Al ２ O ３ , ITO, TiO ２ The silicon oxide may contain inorganic oxides such as SiO ｘ (x is, for example, 1 to 2), and compounds represented by the formula: ２ ・Al ２ O３ SiO in complex inorganic oxides such as ２ Among these, the first vapor deposition material is preferably silicon oxide. When the first vapor deposition material is silicon oxide, a layer containing silicon oxide is formed by the first vapor deposition step, and active sites can be formed in the silicon oxide contained in the layer. The conditions for vacuum vapor deposition in the first vapor deposition step are not particularly limited, and known conditions can be used.

[0043] The forming step may also be, for example, a step of irradiating a substrate containing oxygen atoms with plasma. By performing such a step, the substrate containing oxygen atoms can be used as a base layer and an underlayer. By irradiating the substrate containing oxygen atoms with plasma in this forming step, active sites can be formed in the oxygen atoms contained in the layer. The substrate containing oxygen atoms is not particularly limited as long as it contains oxygen atoms, and examples thereof include borosilicate glass, float glass, alkali-free glass, acrylic resin, polycarbonate resin, etc. The conditions for irradiating plasma in this step are not particularly limited, and known conditions can be used.

[0044] In the second vapor deposition process, a second vapor deposition material is vacuum-deposited, the second vapor deposition material comprising a first compound having a moiety with an alkyl group having 14 to 70 carbon atoms and a hydroxyl group, and a second compound that is a polyolefin having at least one branch. The median carbon number of the polyolefin is 14 to 1000. By performing this second vapor deposition process after the formation process, a moiety with an alkyl group chemically bonded to the base layer can be formed on the base layer containing oxygen atoms. It is presumed that this oxygen atom is derived from a hydroxyl group contained in the first compound. Here, the bonding mode is a covalent bond. Additionally, the second vapor deposition process positions the polyolefin on the side of the moiety with the alkyl group relative to the base layer. That is, the solid preferably includes a vapor deposition of the first compound and a vapor deposition of the second compound. Furthermore, the solid more preferably includes a vapor deposition of a linear polyolefin. Furthermore, the solid even more preferably includes a vapor deposition of a third compound.

[0045] The first compound having a moiety having an alkyl group and a hydroxyl group, which is contained in the second vapor deposition material, is not particularly limited, but examples thereof include linear aliphatic alcohols and aliphatic alcohols having a branched structure, and is represented by the general formula: [C ｎ H ２ｎ＋１ ]-OH is preferred. The hydroxyl group in the formula may be located at the terminal or inside of the alkyl group, but is preferably located at the terminal. The first compound having a hydroxyl group allows it to bond with an oxygen atom contained in the base layer. In the formula, n represents the number of carbon atoms in the alkyl group, and n preferably ranges from 14 to 70, more preferably from 16 to 60, even more preferably from 18 to 60, and particularly preferably from 18 to 40. Specific examples of the first compound having a moiety having an alkyl group and a hydroxyl group include compounds A-1, A-2, A-3, and A-4 shown in Table 1.

[0046] The median carbon number of the polyolefin having at least one branch contained in the second vapor deposition material is 14 or more and 1000 or less. The median carbon number of the polyolefin is preferably 14 or more and 980 or less, more preferably 14 or more and 880 or less, even more preferably 16 or more and 780 or less, and a particularly preferred range is 16 or more and 680 or less. Specific examples of the polyolefin that is the second compound include compounds A''-1, A''-2, A''-3, A''-4, and A''-5 shown in the examples, and commercially available products include VYBAR polymer manufactured by NuCeraSolutions and Hiwax manufactured by Mitsui Chemicals, Inc.

[0047] In the method for producing the solid material, the first compound may be a linear alcohol alkoxylate or an alcohol alkoxylate having a branched structure, and may be represented by the general formula: [C ｎ’ H ２ｎ’＋１ ]-O-[(CH ２ ) ２ O] ｍA linear alcohol ethoxylate represented by -H is preferred. The alkoxylate has a terminal hydroxyl group, which allows it to bond with oxygen contained in the base layer. n' in the formula indicates the number of carbon atoms in the alkyl group, and m in the formula indicates the degree of polymerization of the oxyethylene group. The total number of carbon atoms in the linear alcohol ethoxylate, n' + 2m, is preferably in the range of 14 to 70, more preferably 16 to 60, even more preferably 18 to 60, and particularly preferably 18 to 40. The degree of polymerization of the oxyethylene group is not particularly limited, but may be 1 to 20, 1 to 15, or 1 to 10. Specific examples of linear alcohol alkoxylates include compounds A-11, A-12, A-13, and A-14 shown in Table 1.

[0048] In the method for producing a solid material, only one type of first compound may be used, or two or more types of compounds may be used in combination. That is, the first compound may be at least one selected from the group consisting of linear aliphatic alcohols, aliphatic alcohols having a branched structure, linear alcohol alkoxylates, and alcohol alkoxylates having a branched structure. For example, linear aliphatic alcohols include 1-tetradecanol, 1-stearyl alcohol, 1-icosanol, 1-docosanol, 1-triacontanol, 1-hexacontanol, and 1-heptacontanol, and linear alcohol ethoxylates include ethylene glycol monohexadecyl ether, ethylene glycol monooctadecyl ether, ethylene glycol monooctacosyl ether, and decaethylene glycol tetracontyl ether.

[0049] In the method for producing a solid material, only one type of second compound may be used, or two or more types of compounds may be used in combination. That is, the second compound may be at least one selected from the group consisting of polyolefins having at least one or more branched structures. For example, in the present disclosure, low-density polyethylene (LDPE) may be used as a polyolefin having at least one or more branched structures. Commercially available products include VYBAR polymer manufactured by NuCeraSolutions and Hiwax manufactured by Mitsui Chemicals, Inc.

[0050] In the second vapor deposition material, the ratio of the content of the second compound to the content of the first compound, based on mass, is preferably 1.00 or more and 15.00 or less, more preferably 1.50 or more and 15.00 or less, and even more preferably 2.75 or more and 10.00 or less. The second vapor deposition material can be any combination of the first compound and the second compound. Specific examples of the second vapor deposition material include, but are not limited to, a mixture of A-1 and A"-1, a mixture of A-2 and A"-2, a mixture of A-11 and A"-1, and a mixture of A-12 and A"-2. Specific examples of the second vapor deposition material include commercially available products such as UNILIN alcohol and UNITHOX ethoxylate manufactured by NuCeraSolutions.

[0051] In the method for producing a solid material, the second vapor deposition material may further contain a linear polyolefin. The linear polyolefin is not particularly limited, and examples include linear polyethylene and linear polyolefin, with linear polyethylene being preferred. The central carbon number of the linear polyolefin is not particularly limited, but is preferably 14 to 70, and more preferably 20 to 60. In the second vapor deposition material, the mass-based ratio of the content of the linear polyolefin to the content of the first compound is preferably 0.01 to 1.00, and more preferably 0.10 to 0.50.

[0052] In the method for producing a solid material, the second vapor deposition material may further contain a third compound having a dimethyl silicone chain in addition to the first compound and the second compound. The third compound having a dimethyl silicone chain is not particularly limited, but may be a compound represented by the general formula: R-[Si(CH ３ ) ２ O] ｉ Preferably, the compound has a structure represented by -R'. In the formula, i represents the degree of polymerization of the dimethylsilicone chain, i.e., the number of silicon atoms in the dimethylsilicone chain. The preferred range for i is 3 or more and 110 or less, more preferably 3 or more and 100 or less, and even more preferably 3 or more and 50 or less. At least one selected from the group consisting of R and R' in the formula is preferably a reactive functional group capable of bonding to the base layer via an oxygen atom. Here, this oxygen atom is presumed to be derived from a reactive functional group contained in the third compound. That is, the reactive functional group is not limited as long as it can bond to the base layer, but examples include alkoxy groups such as methoxy and ethoxy groups, and hydroxyl groups. Of these, a methoxy group is preferred. When at least one selected from the group consisting of R and R' is a reactive functional group capable of bonding to the base layer via an oxygen atom, the third compound can bond to the oxygen atom contained in the base layer. Here, the bonding mode is a covalent bond.

[0053] When at least one selected from the group consisting of R and R' is the reactive functional group, the functional group in the group consisting of R and R' that is not a reactive functional group is not particularly limited, and examples thereof include alkyl groups such as methyl groups and ethyl groups, and hydrogen. Of these, methyl groups are preferred. Alternatively, R and R' may be functional groups that are not reactive functional groups.

[0054] The method for producing a solid material may include a third vapor deposition step of vapor depositing a third compound before or after the second vapor deposition step.

[0055] The molecular weight of the third compound is preferably 200 or more and 8000 or less, more preferably 240 or more and 7600 or less, and even more preferably 300 or more and 7600 or less. It may also be 300 or more and 8000 or less. Specific examples of the third compound include compounds B-1, B-2, B-3, and B-4 shown in Table 1.

[0056] In the second deposition material, the mass ratio of the content of the third compound to the total content of the first compound and the second compound is preferably 0.0 or more and 1.1 or less, more preferably 0.1 or more and 1.0 or less, and even more preferably 0.1 or more and 0.5 or less. The mass ratio of the content of the third compound to the total content of the first compound and the second compound may be 0.3 to 0.7, and by setting it in the above range, P Ｂ / P Ａ It becomes easier to keep the value within the above range.

[0057] As the third compound, a compound having a dimethyl silicone chain and dimethylpolysiloxane may be used in combination.

[0058] Optical Members Optical members are optical members containing the solid material of the present disclosure, and examples of optical members include optical filters, optical lenses, eyeglass lenses, photographic lenses, display cover glasses, and various films.

[0059] <Eyeglasses> Eyeglasses are glasses having the optical element of the present disclosure. Eyeglasses encompass all devices worn around the eyes, and are not limited to ordinary eyeglasses for vision correction, but also include fashion glasses, protective goggles, head-mounted displays, sunglasses, smart glasses, and the like.

[0060] <Touch Panel> The touch panel is a touch panel having the optical member of the present disclosure. The touch panel according to the present disclosure is used in devices having touch panels in general. Examples of devices having touch panels include smartphones and tablet terminals. That is, the smartphone has the optical member of the present disclosure. Furthermore, the tablet terminal has the optical member of the present disclosure.

[0061] The analytical method of the present disclosure is described below. <Method for confirming that a moiety having an alkyl group is bonded to a base layer via an oxygen atom> Whether a moiety having an alkyl group is bonded to a base layer via an oxygen atom can be confirmed by the following procedure. A first vapor deposition material containing silicon oxide is vacuum-deposited on each of substrate A made of borosilicate glass and substrate B made of borosilicate glass, to form a base layer containing oxygen atoms. By forming a layer containing oxygen atoms through this first vapor deposition process, active sites can be formed on the oxygen atoms contained in the layer. Thereafter, while maintaining the vacuum state after the formation of the layer containing oxygen atoms, substrate A is subsequently vacuum-deposited with a second vapor deposition material, thereby obtaining a solid material of the present disclosure. After the formation of the layer containing oxygen atoms, substrate B is removed from the vacuum deposition apparatus and exposed to air at atmospheric pressure, thereby performing a treatment to eliminate the active sites of the oxygen atoms contained in the layer, and then vacuum-depositing the second vapor deposition material.

[0062] Substrate A and substrate B, on which the second deposition material was vacuum-deposited, were heated in a vacuum, and the temperatures at which the alkyl group moieties were detected using a mass spectrometer (product name: infiTOF-DUO, manufactured by Nippon Kanomax Co., Ltd.) were compared to confirm that the alkyl group moieties were bonded to the base layer via oxygen atoms. Because the alkyl group moieties of substrate A are bonded to the base layer via oxygen atoms, the temperature at which the alkyl group moieties were detected is higher than that of substrate B. The measurement conditions were as follows: Temperature range: room temperature to 1000°C; Heating rate: 10°C / min; Atmosphere: reduced pressure (5 x 10-7 Pa or less); Measurement mass range: m / z 1 to 1000. Furthermore, when the alkyl group moieties are bonded to the base layer via oxygen atoms using the above method, it can also be said that the solid has polymer brushes on the base layer.

[0063] The bond between the alkyl group moiety and the base layer via an oxygen atom can also be confirmed by the following procedure. Substrate A', made of borosilicate glass with a 100 nm thick ITO film formed on its surface, and substrate B', made of borosilicate glass with a 100 nm thick ITO film formed on its surface, are irradiated with an ion beam in a vacuum to modify their surfaces, thereby forming active sites on the surfaces of the substrates. Substrate A' is then vacuum-deposited with a second vapor deposition material while maintaining the vacuum, thereby obtaining a solid material of the present disclosure. Substrate B' is irradiated with an ion beam to modify its surface, and then removed from the vacuum deposition apparatus and exposed to air at atmospheric pressure to eliminate the active sites of the substrate, after which the second vapor deposition material is vacuum-deposited. Then, each substrate is measured using a mass spectrometer in the same manner as above, except that substrate A' is used instead of substrate A and substrate B' is used instead of substrate B.

[0064] First Embodiment Fig. 1 is a schematic diagram showing the configuration of a first embodiment of a solid material of the present disclosure, and shows an example of the configuration of a solid material in which a base layer 12 is formed on a substrate 11, a portion 13 having an alkyl group is formed on the base layer 12, and a polyolefin 14 is disposed on the side of the portion 13 having an alkyl group as viewed from the base layer 12. Note that Fig. 1 is a schematic representation of the configuration having a portion having an alkyl group, and does not represent the actual thicknesses of the substrate 11, base layer 12, portion 13 having an alkyl group, and polyolefin 14 to accurate proportions.

[0065] (Substrate 11) The substrate 11 may be a solid material capable of forming the base layer 12, the alkyl group-containing portion 13, and the polyolefin 14, and may be, for example, glass, ceramics, resin, or a film made of metal, glass, resin, or the like. When using the above-mentioned materials as the substrate of the optical component having a solid material of the present disclosure, the substrate is preferably capable of transmitting visible light or light of a specific wavelength. The thickness of the substrate is not particularly limited and can be set appropriately depending on the application.

[0066] (Base Layer 12) The base layer 12 is the oxygen atom-containing base layer of the present disclosure. There are no particular limitations on the thickness of the base layer 12, but examples include 2 nm to 50 nm and 4 nm to 20 nm.

[0067] (Moiety 13 Having an Alkyl Group) The moiety 13 having an alkyl group is a moiety having an alkyl group on the base layer of the present disclosure.

[0068] (Polyolefin 14) The polyolefin 14 is arranged on the side of the site 13 having the alkyl group as viewed from the base layer of the present disclosure.

[0069] For example, the solid material of the present disclosure may have a layer containing a moiety having an alkyl group and a polyolefin on a base layer. In this case, the thickness of the layer containing a moiety having an alkyl group and a polyolefin is preferably 1 nm or more and 100 nm or less, more preferably 10 nm or more and 80 nm or less, and even more preferably 20 nm or more and 60 nm or less. By being in the above range, a solid material having excellent scratch resistance and long-term antifouling properties is easily obtained. The thickness of the layer can be adjusted, for example, by the amounts of the first compound and the second compound added during the preparation of the surface-forming material. The thickness of the layer is measured using spectroscopic ellipsometry.

[0070] The present disclosure will be described in more detail below with reference to examples, but the present disclosure is not limited to the following examples.

[0071] Example 1 (Preparation of Surface-Forming Material) Table 2 shows combinations of component A (first compound) and component A' (linear polyethylene), the mass ratio of component A' to component A, combinations of component A'' (second compound), the mass ratio of component A'' to component A, combinations of component B (third compound), and the mass ratio of component B to the total mass of components A and A''. Table 1 shows the structures of substances corresponding to the symbols in Table 2. In Example 1, 16 mg of a linear alcohol having 50 carbon atoms (A-4 in Table 1) as component A and 84 mg of a branched polyethylene (A''-1) having a median carbon number of 500 and an average of 80 branches per molecule as component A'' were used as surface-forming materials and charged into a metal container (Production Example 1). Here, the median carbon number is a value determined from the weight-average molecular weight of the polymer.

[0072] (Preparation of base layer) SiO ２ (Canon Optron Inc., product name: SiO2-E-1-2) was used as the first deposition material, and SiO was deposited on a 3 mm thick borosilicate glass substrate 11. ２ A 10 nm thick base layer 12 was formed by vapor deposition using a vacuum vapor deposition apparatus (dome diameter Φ900 mm, deposition distance 890 mm). The thickness of the base layer 12 was measured using a spectroscopic ellipsometry (JA WOOLLAM - ESM300) and was found to be 10 nm.

[0073] (Preparation of alkyl group-containing moiety and polyolefin) Using the surface-forming material of Production Example 1 as a second deposition material, a polyolefin 14 and an alkyl group-containing moiety 13 bonded to the base layer 12 via an oxygen atom were formed on the base layer 12 by deposition using a vacuum deposition apparatus (dome diameter Φ900 mm, deposition distance 890 mm), thereby obtaining an optical member. The thicknesses of the alkyl group-containing moiety 13 and the polyolefin 14 were measured using a spectroscopic ellipsometry (JA WOOLLAM - ESM300) and found to be 40 nm.

[0074] (Evaluation of Ethanol Resistance) The ethanol resistance of the surface of the prepared optical component was evaluated according to the following method. First, the water contact angle of the surface of the prepared optical component was measured using the method described below. Then, 200 μL of ethanol (product name: Special Grade Ethanol (99.5), Kishida Chemical) was dropped onto a stack of eight sheets of clint paper (Cotton Wiper Clint, manufactured by Unitika Co., Ltd.) cut into squares with sides of 1.5 cm, to prepare an ethanol-soaked surface. The clint paper was brought into contact with the surface of the optical component and moved back and forth to perform an ethanol resistance test. The applied load was adjusted so that the load on the surface was 0.98 kgf, and the friction was performed under the conditions of a reciprocating speed of 60 reciprocating motions per minute and a travel distance of 10 mm. The clint paper was replaced every 10 reciprocating motions, for a total of 50 reciprocating motions. Then, the water contact angle was measured. The water contact angle is the angle between the tangent to the water droplet surface at the point where the solid and the water droplet come into contact and the solid surface. Here, the smaller the difference in water contact angle before and after the ethanol resistance test, the better the water-repellent function of the surface is maintained. In other words, the smaller the difference in water contact angle before and after the ethanol resistance test, the better the durability of the water-repellent performance against alcohol.

[0075] The water contact angle was measured using a contact angle meter (DM-701, manufactured by Kyowa Interface Science Co., Ltd.). The specific measurement procedure is as follows: 2.5 μL of ion-exchanged water was dropped onto the surface of the optical component. From an image obtained 5 seconds after the drop, the angle formed by the tangent to the water droplet surface at the point where the water droplet and the surface of the optical component came into contact with each other and the surface of the optical component was measured. The evaluation results of alcohol resistance are shown in Table 4.

[0076] (Evaluation of Scratch Resistance) The scratch resistance of the surface of the prepared optical member was evaluated according to the following method. First, the water contact angle of the surface of the prepared optical member was measured according to the method described below. ２A friction test was performed using steel wool (manufactured by Japan Steel Wool Co., Ltd., grade #0000, wire diameter: approximately 0.012 mm) cut into strips. The steel wool was brought into contact with the surface of the optical component and moved back and forth to perform the friction test. The applied load was adjusted so that the load on the surface was 9.8 kgf, and friction was performed under the conditions of a reciprocating speed of 60 reciprocations / min and a moving distance of 15 mm. The number of reciprocating cycles was 1,000. Thereafter, the water contact angle was measured in the same manner as in the evaluation of ethanol resistance. The evaluation results for scratch resistance are shown in Table 4.

[0077] Examples 2 to 31 Surface-forming materials were prepared in the same manner as in Example 1, except that the compounds shown in Table 1 as component A and component B were used in the combinations shown in Table 2, with the mass ratio of component A′ to component A, the mass ratio of component A″ to component A, and the mass ratio of component B to the total mass of components A and A″. These were designated Production Examples 2 to 31.

[0078] The following compounds were used as component A': A'-1: Linear polyethylene having a lower limit of 14 carbon atoms, an upper limit of 70 carbon atoms, and a central carbon number of 30; A'-2: Linear polyethylene having a lower limit of 20 carbon atoms, an upper limit of 70 carbon atoms, and a central carbon number of 50.

[0079] The following compounds were used as component A″. A″-2: An ethylene / propylene copolymer having a lower carbon number of 40, an upper carbon number of 120, a central carbon number of 80, and an average of 3 branches per molecule. A″-3: An ethylene / propylene copolymer having a lower carbon number of 400, an upper carbon number of 600, a central carbon number of 500, and an average of 50 branches per molecule. A″-4: A polypropylene having a lower carbon number of 800, an upper carbon number of 1200, a central carbon number of 1000, and an average of 300 branches per molecule. A″-5: A branched-chain polyethylene having a lower carbon number of 12, an upper carbon number of 18, a central carbon number of 15, and an average of 1 branch per molecule.

[0080] Optical members were obtained using the obtained Production Examples 2 to 31. Ethanol resistance was evaluated in the same manner as in Example 1. The results are shown in Table 4. The mass-based ratio of the polyolefin content to the alkyl group-containing moiety content in the obtained solid was measured using high-performance liquid chromatography as described above, and was found to be consistent with the mass ratio of Component A" to Component A in the surface-forming material. Furthermore, the composition ratio of Component B to the total mass of Component A and Component A" in the obtained solid was measured using a micro-Raman spectrometer, and was found to be consistent with the mass ratio of Component B to the total mass of Component A and Component A" in the surface-forming material.

[0081] Example 32 An optical member was obtained in the same manner as in Example 1, except that instead of using the first vapor deposition material for the base layer, a 3 mm-thick borosilicate glass substrate 11 was irradiated with plasma to activate the substrate surface, and then a second vapor deposition material was vacuum-deposited to bond the alkyl group-containing moiety to the base layer. Furthermore, ethanol resistance was evaluated in the same manner as in Example 1. The results are shown in Table 4.

[0082] [Examples 33 to 45] Surface-forming materials were prepared as Production Examples 33 to 45 in the same manner as in Example 1, except that the compounds shown in Table 3 were used as the second vapor deposition material and the third vapor deposition material in the combinations, mass ratios of component A" to component A, and mass ratios of component B to the total mass of components A and A" shown in Table 3. Optical members were obtained using the obtained Production Examples 33 to 45. Furthermore, ethanol resistance was evaluated in the same manner as in Example 1. The results are shown in Table 5.

[0083] [Comparative Examples 1 to 8] Surface-forming materials were prepared in the same manner as in Example 1, except that the compounds shown in Table 1 as component A and component B were used in the combinations shown in Table 2, the mass ratio of component A' to component A, the mass ratio of component A" to component A, and the mass ratio of component B to the total mass of components A and A" were used, and these surface-forming materials were designated as Comparative Production Examples 1 to 8. Optical members were obtained using the obtained Comparative Production Examples 1 to 8. Furthermore, evaluations of scratch resistance and antifouling properties were performed in the same manner as in Example 1. The results are shown in Table 4.

[0084] The following compounds were used as component A''. A''-6: Branched-chain polyethylene having a lower limit of 8 carbon atoms, an upper limit of 12 carbon atoms, a central value of 10 carbon atoms, and an average of 2 branches per molecule A''-7: Branched-chain polyethylene having a lower limit of 1200 carbon atoms, an upper limit of 1800 carbon atoms, a central value of 1500 carbon atoms, and an average of 100 branches per molecule

[0085] For example, a comparison between Example 1 and Comparative Example 1 shows that the addition of a branched polyolefin improves ethanol resistance.

[0086] A comparison between Example 1 and Comparative Example 2 shows that the addition of a branched polyolefin improves ethanol resistance.

[0087] 11: Substrate 12: Base layer 13: Portion having alkyl group 14: Polyolefin

Claims

1. A solid comprising a base layer, a moiety on the base layer having an alkyl group, and a polyolefin, wherein the moiety having an alkyl group is bonded to the base layer via an oxygen atom and has an alkyl group having 14 to 70 carbon atoms, the polyolefin is arranged on the side of the base layer on which the moiety having the alkyl group is located, the polyolefin has at least one branch, the median carbon number of the polyolefin is 14 to 1,000, and the mass ratio of the polyolefin content to the moiety having the alkyl group in the solid is 1.00 to 15.

00.

2. The solid of claim 1, wherein said solid comprises polymer brushes on said substrate, and said alkyl group-containing moieties form said polymer brushes.

3. A solid material according to claim 1 or 2, wherein the moiety having an alkyl group has a linear aliphatic structure.

4. A solid material according to any one of claims 1 to 3, wherein the solid material further contains a linear polyethylene having a center carbon number of 14 to 70, and the linear polyolefin is disposed on the side of the base layer that has the alkyl group.

5. A solid material according to any one of claims 1 to 4, wherein the solid material further comprises a compound having a dimethyl silicone chain with a silicon number of 3 or more and 110 or less, the compound being arranged on the side of the base layer that has the alkyl group.

6. The solid material according to claim 5, wherein the molecular weight of the compound having a dimethyl silicone chain is 200 or more and 8,000 or less.

7. The solid material according to any one of claims 1 to 6, wherein the layer containing the moiety having an alkyl group and the polyolefin has a thickness of 1 nm or more and 100 nm or less.

8. An optical member comprising the solid material according to any one of claims 1 to 7.

9. Eyeglasses having the optical element according to claim 8.

10. A touch panel having the optical member according to claim 8.

11. A smartphone having the optical member according to claim 8.

12. A tablet terminal having the optical member according to claim 8.

13. A method for producing a solid material according to any one of claims 1 to 7, comprising: a forming step of forming a base layer containing oxygen atoms; and a second vapor deposition step of vacuum-depositing a second vapor deposition material comprising a first compound having a moiety with an alkyl group having from 14 to 70 carbon atoms and a hydroxyl group, and a second compound which is a polyolefin having at least one branch, to form the moiety with the alkyl group and the polyolefin, in this order; wherein the median carbon number of the polyolefin is from 14 to 1,000.

14. The method for producing a solid material according to claim 13, wherein the forming step is a step of forming the base layer by vacuum-depositing a first deposition material containing silicon oxide, and the base layer contains silicon oxide.

15. The method for producing a solid material according to claim 13 or 14, wherein the forming step is a step of irradiating a substrate containing oxygen atoms with plasma.

16. A method for producing a solid material according to any one of claims 13 to 15, wherein the first compound is a straight-chain aliphatic alcohol.

17. A method for producing a solid material according to any one of claims 13 to 16, wherein the first compound is a linear alcohol ethoxylate.

18. The method for producing a solid material according to any one of claims 13 to 17, wherein the second vapor deposition material further contains linear polyethylene.

19. A method for producing a solid material according to any one of claims 13 to 18, wherein in the second vapor deposition material, the ratio of the content of the second compound to the content of the first compound, based on mass, is 1.00 or more and 15.00 or less.

20. The method for producing a solid material according to any one of claims 13 to 19, wherein the second vapor deposition material further contains a third compound having a dimethyl silicone chain.

21. A method for producing a solid material according to any one of claims 13 to 20, wherein in the second vapor deposition material, the ratio by mass of the content of the third compound to the total content of the first compound and the second compound is 0.1 or more and 1.0 or less.

Images