Surface layer, optical member, and glasses

Abstract

To provide a surface layer that achieves both stability of fixation during processing and anti-fouling characteristics, and an optical member and glasses having the surface layer.SOLUTION: Provided is a surface layer including at least a component A and a component B. The component A has a siloxane moiety containing a siloxane bond, and the component B is an alkyl compound having an organic moiety having at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond, and having a structure represented by the following general formula (3). A moiety represented by Y includes a prescribed moiety. The content ratio of the component B relative to the component A in the surface layer is 0.04-3.00. Also provided is a material for forming a surface layer. (3) R3-Y-R4.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a surface layer having excellent processability and antifouling properties, an optical member having the surface layer, and eyeglasses having the optical member. The present disclosure also relates to a surface layer-forming material that forms a surface layer having excellent processability and antifouling properties, a surface layer formed using the surface layer-forming material, an optical member having the surface layer, and eyeglasses having the optical member. [Background technology]

[0002] Optical components such as anti-reflection films, optical filters, optical lenses, and eyeglass lenses are generally made of an inorganic material to suppress light reflection. Anti-reflection films made of inorganic materials have high surface free energy. Due to the high surface free energy, stains such as fingerprints, sebum, sweat, and cosmetics are often attached to the surface when used by humans. In addition, there is a problem that the attached stains are difficult to remove. As a means for solving the problem of stain attachment and removal, Patent Documents 1 and 2 propose a technology for imparting a performance to the surface of an optical component that makes it difficult for stains to attach and easy to remove even if stains do attach.

[0003] However, optical components having a surface that is imparted with properties that make it difficult for dirt to adhere and that make it easy to remove even if dirt does adhere (hereinafter, such properties will be referred to as "anti-fouling properties" or "anti-fouling characteristics") have a low frictional force and a slippery surface, which means that it is difficult to stably fix the optical components when processing their shape, making them difficult to process.

[0004] In response to the above-mentioned problems, Patent Document 3 discloses a spectacle lens that, by forming a protective film on an oil-repellent coating film and using a coating liquid containing as active ingredients a resin made of an organic compound, inorganic oxide fine particles, and an organosilicon compound represented by a specific general formula or a hydrolysate thereof, and by setting the composition ratio of the resin made of an organic compound and the inorganic oxide fine particles and the content of the organosilicon compound represented by the specific general formula or a hydrolysate thereof within a specified range, enables edging processing to be performed using the same holding method as for conventional spectacle lenses, even though the spectacle lens has an oil-repellent coating film. Furthermore, Patent Document 4 discloses a spectacle lens having an anti-soiling layer formed on its surface from two or more silane compounds, at least one of which is a fluorine-containing silane compound, in which the highest kinetic friction coefficient of the lens surface formed with each of the two or more silane compounds as a single component is at least 1.4 times the lowest kinetic friction coefficient, thereby enabling the lubricity of the lens surface to be reduced to a level that allows edging without reducing the excellent anti-soiling effect of the anti-soiling layer. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2000-144097 A [Patent Document 2] JP 2003-238577 A [Patent Document 3] JP 2013-050652 A [Patent Document 4] JP 2005-003817 A [Non-patent literature]

[0006] [Non-Patent Document 1] Silicone Encyclopedia, Technology Encyclopedia Series, Pages 10-11 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the solutions described in Patent Documents 3 and 4 are still not sufficient in terms of fixation during processing, and there is a demand for an antifouling surface that combines better processing stability with antifouling properties.

[0008] The present disclosure provides a surface layer that combines fixation stability during processing with antifouling properties, an optical member and eyeglasses having the surface layer, and a material for forming a surface layer that forms a surface layer that combines fixation stability during processing with antifouling properties. [Means for solving the problem]

[0009] The surface layer of the present disclosure is a surface layer including at least component A and component B, Component A has a siloxane moiety containing a siloxane bond, The component B has an organic moiety having at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond, and is represented by the following general formula (3): R3-Y-R4(3) is an alkyl compound having a structure represented by The site represented by Y is [C i H 2i-2 ] j1 , [C i H 2i ] j2 , [C6H4] j3、 [C i+1 H 2i-1 Cl] j4 , [C i H i Cl] j5 , [C5H4O3] j6 , [C3H6N] j7 and [C4H6O2N] j8 and The i, j1, j2, j3, j4, j5, j6, j7, and j8 satisfy 32≦i×(j1+j2+j3+j4+j5+j6+j7+j8)≦750, j1, j2, j3, j4, j5, j6, j7, and j8 each independently represent an integer of 0 or more, The i's are each independently an integer of 1 or more for each moiety, R3 and R4 each independently represent a hydrolyzable group, a silanol group, a hydroxyl group, a reactive organic group, an organic group containing a hydrolyzable group-containing silyl group, an alkylsilyl group, or a hydrogen atom; A surface layer characterized in that a composition ratio of component B to component A in the surface layer is 0.04 to 3.00. It is. The optical member of the present disclosure is an optical member having the above-mentioned surface layer. Furthermore, glasses according to the present disclosure include glasses having the above-mentioned optical member.

[0010] Furthermore, the surface layer forming material of the present disclosure is a surface layer forming material containing at least component A and component B, Component A has at least a siloxane moiety containing a siloxane bond, The component B has an organic moiety having at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond, and is represented by the following general formula (3): R3-Y-R4(3) is an alkyl compound having a structure represented by The site represented by Y is [C i H 2i-2 ] j1 , [C i H 2i ] j2 , [C6H4] j3、 [C i+1 H 2i-1 Cl] j4 , [C i H i Cl] j5、 [C5H4O3] j6 , [C3H6N] j7 and [C4H6O2N] j8 and The i, j1, j2, j3, j4, j5, j6, j7, and j8 satisfy 32≦i×(j1+j2+j3+j4+j5+j6+j7+j8)≦750, j1, j2, j3, j4, j5, j6, j7, and j8 each independently represent an integer of 0 or more, The i's are each independently an integer of 1 or more for each moiety, R3 and R4 each independently represent a hydrolyzable group, a silanol group, a hydroxyl group, a reactive organic group, an organic group containing a hydrolyzable group-containing silyl group, an alkylsilyl group, or a hydrogen atom; The material for forming a surface layer is characterized in that the mass ratio of component B to component A in the material for forming a surface layer is 0.04 to 3.00. Effect of the Invention

[0011] According to the present disclosure, it is possible to provide a surface layer that has both fixation stability during processing and antifouling properties, and an optical component and eyeglasses having the surface layer. In addition, the present disclosure can provide a surface layer-forming material that forms a surface layer that has both fixation stability during processing and antifouling properties. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a schematic diagram showing a configuration of a surface layer according to a first embodiment; [Diagram 2] FIG. 13 is a schematic diagram showing a configuration of a surface layer according to a second embodiment; [Diagram 3] FIG. 1 is a schematic diagram showing a configuration of an optical member according to a first embodiment; [Figure 4] FIG. 11 is a schematic diagram showing a configuration of an optical member according to a second embodiment. [Diagram 5] FIG. 1 is a schematic diagram showing a configuration of an embodiment of eyeglasses using an optical member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, preferred embodiments of the surface layer, the optical member having the surface layer, the eyeglasses having the optical member, and the material for forming the surface layer according to the present disclosure will be described. The present disclosure is not limited to the following embodiments. In the present disclosure, the description of a numerical range such as "XX to YY" or "XX to YY" means a numerical range including the upper and lower 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.

[0014] According to the present disclosure, the frictional force when a high load is applied to the surface layer of the base material or optical member is kept high, thereby suppressing slipperiness, and the base material or optical member can be stably fixed during processing of the base material or optical member. In addition, the frictional force is low within the range of the load applied to the surface layer of the base material or optical part when the user uses the base material or optical member in daily life, and antifouling properties can be expressed. As a result, it is possible to provide a surface layer that combines processability and antifouling properties, an optical member having the surface layer, and a pair of glasses having the optical member. In addition, it is possible to provide a material for forming a surface layer that imparts the above properties to the surface layer.

[0015] The inventors consider the mechanism by which the surface layer according to the present disclosure and the optical component having the surface layer achieve both stability during processing and antifouling properties as follows. A compound having a siloxane moiety containing a siloxane bond is selected as component A contained in the surface layer, and a compound having an organic moiety having at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond is selected as component B.

[0016] Component A, which has a siloxane moiety containing a siloxane bond, exhibits antifouling properties, but tends to have low frictional force when a load is applied. The inventor believes that the reason for this is as follows. According to Non-Patent Document 1, a siloxane bond is a bond consisting of a silicon atom and an oxygen atom, and is represented by the following chemical formula (1). Si-O-Si (1) The rotational energy of the silicon-oxygen bond in the above formula (1) is small, less than 0.8 kJ / mol. Because of this characteristic, it is believed that when a surface having a siloxane moiety with a siloxane bond is subjected to a load in order to be fixed, the siloxane moiety with the siloxane bond will deform and be able to release the force, resulting in low friction.

[0017] On the other hand, component B has an organic moiety having at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond, and therefore tends to be less prone to deformation under load and to have higher frictional force than component A. Therefore, when a surface layer containing at least components A and B comes into contact with an object, component A deforms under high load, but component B does not deform easily. As a result, a high frictional force is obtained by increasing the proportion of component B in contact with the object in contact with the surface layer. Furthermore, it is preferable that component B has an organic moiety having at least one bond selected from the group consisting of an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond, because it is less likely to deform under load and has a high frictional force. In addition, by adjusting the composition ratio of component B to component A in the surface layer within a specified range, high antifouling properties can be obtained when the surface layer comes into contact with an object under a low load.

[0018] The term "surface layer" refers to an interface that is in contact with a base material and is in contact with a solid, liquid, or gas. That is, in this specification, the term "surface layer" refers to the surface of a base material, and this specification also discloses a base material having such a surface. The base material may be any material that is a solid and capable of forming the undercoat layer 12, surface layer 13, intermediate layer 14, or hard coat layer 15 described below, but is preferably a film made of glass, ceramic, resin, metal, or glass, resin, or the like.

[0019] The optical member is an optical member having a base material having the above-mentioned surface layer. Examples of the optical member include an optical filter, an optical lens, a spectacle lens, a photographic lens, a cover glass for a display, a touch panel for a display, and various films.

[0020] The eyeglasses are eyeglasses having the optical member described above. The eyeglasses include any device worn around the eyes, and are not limited to ordinary eyeglasses for vision correction, but also include fashion eyeglasses, protective goggles, head-mounted displays, sunglasses, and smart glasses.

[0021] Component A according to the present disclosure will be described. Component A has a siloxane moiety containing a siloxane bond. The siloxane moiety containing a siloxane bond is preferably at least one moiety selected from the group consisting of a dimethylsiloxane moiety, a diphenylsiloxane moiety, a methylphenylsiloxane moiety, a methylhydrogensiloxane moiety, and a phenylhydrogensiloxane moiety, and more preferably at least one moiety selected from the group consisting of a dimethylsiloxane moiety, a diphenylsiloxane moiety, and a methylphenylsiloxane moiety.

[0022] Specifically, component A is, for example, a compound represented by the following general formula (2): R1-X-R2(2) and is preferably at least one selected from the group consisting of a dimethylsiloxane compound, a diphenylsiloxane compound, a methylphenylsiloxane compound, a methylhydrogensiloxane compound, and a phenylhydrogensiloxane compound, and more preferably at least one selected from the group consisting of a dimethylsiloxane compound, a diphenylsiloxane compound, and a methylphenylsiloxane compound.

[0023] In a preferred embodiment, the moiety represented by X in formula (2) is composed of any combination of at least one moiety selected from the moieties shown in Table 1 below.

[0024] [Table 1] In the table, SiC2H6 represents -Si(CH3)2-, SiC7H8 represents -Si(CH3)Ph-, SiC6H6 represents -SiHPh-, and SiC 12 H 10 represents -Si(Ph)2-, and SiCH4 represents -Si(CH3)H-. Ph represents a phenyl group.

[0025] In Table 1, m1, m2, m3, m4, and m5 preferably satisfy 2≦m1+m2+m3+m4+m5≦150. A more preferable range for m1+m2+m3+m4+m5 is 5≦m1+m2+m3+m4+m5≦120, and an even more preferable range is 10≦m1+m2+m3+m4+m5≦50.

[0026] In Table 1, m1, m2, m3, m4, and m5 are each independently an integer of equal to or greater than 0. In other words, m1, m2, m3, m4, and m5 in Table 1 may each have a different value for each site. Here, m1, m2, m3, m4, and m5 being 0 means that the respective moieties shown in Table 1 are not included in the moiety represented by X in formula (2). Also, O in Table 1 represents oxygen constituting a siloxane bond.

[0027] In addition, the site represented by X may have a part of the side chain substituted with an organic group such as an amino group, an epoxy group, a thiol group, a carboxy group, a polyether group, a long-chain alkyl group or a fluoroalkyl group.

[0028] R1 and R2 in the general formula (2) are preferably each independently a hydrolyzable group, a silanol group, a hydroxy group, a reactive organic group, an organic group containing a hydrolyzable group-containing silyl group, an alkylsilyl group, or a hydrogen atom. Examples of the hydrolyzable group include alkoxy groups having 1 to 10 carbon atoms, such as a methoxy group, an ethoxy group, a propoxy group, and a butoxy group; alkoxyalkoxy groups having 2 to 10 carbon atoms, such as a methoxymethoxy group and a methoxyethoxy group; acyloxy groups having 1 to 10 carbon atoms, such as an acetoxy group; alkenyloxy groups having 2 to 10 carbon atoms, such as an isopropenoxy group; halogen groups, such as a chloro group, a bromo group, and an iodo group; and amino groups. Among these, methoxy, ethoxy, isopropenoxy, and chloro groups are preferred. Examples of the reactive organic group include a methacryl group, a carboxy group, an epoxy group, and a thiol group. Among these, methacryl and carboxy groups are preferred. The organic group containing a hydrolyzable group-containing silyl group is, for example, an organic group in which a hydrolyzable group is directly or indirectly bonded to a silicon atom. Examples of the hydrolyzable group include alkoxy groups having 1 to 10 carbon atoms such as methoxy, ethoxy, propoxy, and butoxy groups, alkoxyalkoxy groups having 2 to 10 carbon atoms such as methoxymethoxy and methoxyethoxy groups, acyloxy groups having 1 to 10 carbon atoms such as acetoxy groups, alkenyloxy groups having 2 to 10 carbon atoms such as isopropenoxy groups, halogen groups such as chloro, bromo, and iodo groups, and amino groups. The number of hydrolyzable groups in the organic group containing a hydrolyzable group-containing silyl group is preferably 1 to 3, more preferably 2 to 3, and even more preferably 3. Hydrolyzable group-containing silyl The organic group containing a group may have an alkylsilyl group as described below. That is, examples of the organic group containing a hydrolyzable group-containing silyl group include a trimethoxysilyl group, a dimethoxymethylsilyl group, an ethyldimethoxysilyl group, a methoxydimethylsilyl group, a diethylmethoxysilyl group, an ethylmethoxymethylsilyl group, a triethoxysilyl group, a diethoxyethylsilyl group, a diethoxymethylsilyl group, an ethoxydiethylsilyl group, and an ethoxyethylmethylsilyl group. Examples of the alkylsilyl group include alkylsilyl groups having 1 to 10 carbon atoms, and the number of carbon atoms in the alkylsilyl group is preferably 1 to 5, more preferably 1 to 3, and particularly preferably 1. The number of alkyl groups is preferably 1 to 3, more preferably 2 to 3, and even more preferably 3. That is, examples of the alkylsilyl group include a trimethylsilyl group, a triethylsilyl group, an ethyldimethylsilyl group, and a diethylmethylsilyl group.

[0029] Specific examples of component A include the compounds shown in Tables 2-1 and 2-2, but are not limited to these compounds. As component A, a compound having a siloxane moiety having a siloxane bond may be used alone or in combination of two or more kinds. [Table 2-1] [Table 2-2] In Tables 2-1 and 2-2, SiC2H6 represents -Si(CH3)2-, SiC7H8 represents -Si(CH3)Ph-, SiC6H6 represents -SiHPh-, and SiC 12 H 10 represents -Si(Ph)2-, SiCH4 represents -Si(CH3)H-, C4H5O2 represents a methacryl group, Me represents a methyl group, Et represents an ethyl group, and Ph represents a phenyl group.

[0030] Component B according to the present disclosure will now be described. Component B has an organic moiety having at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond. Preferably, component B has an organic moiety having an unsaturated hydrocarbon bond, the unsaturated hydrocarbon bond being derived from at least one compound selected from the group consisting of 1,2-polybutadiene, 1,4-polybutadiene, 1,2-polyisoprene, 1,4-polyisoprene, 1,2-polychloroprene and 1,4-polychloroprene. More preferably, the unsaturated hydrocarbon bond is derived from at least one compound selected from the group consisting of 1,2-polybutadiene and 1,2-polyisoprene. Here, the unsaturated hydrocarbon bond being derived from the at least one compound means that the unsaturated hydrocarbon bond in the organic portion corresponds to the unsaturated hydrocarbon bond contained in the at least one compound. In another preferred embodiment, component B has a polyolefin having, in its side chain, an organic moiety having at least one bond selected from the group consisting of an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond.

[0031] Specifically, component B is, for example, a compound represented by the following general formula (3): R3-Y-R4(3) It is an alkyl compound having the structure shown below. Here, when component B is a compound having a structure represented by general formula (3) above, the "organic moiety having at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond" refers to the moiety represented by Y in general formula (3) above.

[0032] The moiety represented by Y in the above general formula (3) is a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, or the like, as shown in Table 3. The compound includes one or more moieties including at least one bond selected from the group consisting of a hydride bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond. In addition, the compound may include one or more of only one type of bond as the saturated hydrocarbon bond, the unsaturated hydrocarbon bond, the carbon-oxygen double bond, and the carbon-nitrogen double bond, or may include a combination of two or more types of bonds. [Table 3] In the table, C6H4 represents a phenylene group.

[0033] i, j1, j2, and j in Table 3 3、 j4, j 5、 j 6、 It is preferable that j7 and j8 satisfy 32≦i×(j1+j2+j3+j4+j5+j6+j7+j8)≦750, and it is more preferable that j7 and j8 satisfy 40≦i×(j1+j2+j3+j4+j5+j6+j7+j8)≦180. In Table 3, each i is independently an integer of 1 or more, and may have a different value for each site. j1, j2, and j in Table 3 3、 j4, j 5、 j 6、 j7 and j8 are each independently an integer of 0 or more. That is, j1, j2, and j 3、 j4, j 5、 j 6、 j7 and j8 may each have a different value for each part. Here, j1, j2, j 3、 j4, j 5、 j 6、 When j7 and j8 are 0, this means that the respective moieties described in Table 3 are not included in the moiety represented by Y in formula (3). Within the range of possible values ​​of i×(j1+j2+j3+j4+j5+j6+j7+j8) above, a side chain branched in the middle of the molecular chain and having at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond may be present within the moiety represented by Y.

[0034] In Table 3, C5H4O3 refers to a bond formed by grafting maleic anhydride to part of the side chain of a polyolefin such as polyethylene or polypropylene. In addition, in Table 3, C3H6N indicates a bond in which a part of the side chain of a polyolefin such as polyethylene or polypropylene is substituted with an amino group. Furthermore, in Table 3, C4H6O2N indicates a bond in which a part of the side chain of a polyolefin such as polyethylene or polypropylene is substituted with an isocyanate group.

[0035] The moiety represented by Y in the above general formula (3) preferably includes one or more moieties including at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond, as shown in Table 4. [Table 4]

[0036] k1, k2, and k in Table 4 3、 k4, k5, k6, k7, k8, k9 and k 10 is 8≦k1+k2+k3+k4+k6+k7+k8+k 9+ k 10 It is preferable that k1+k2+k3+k4+k6+k7+k8+k 9+ k 10 It is more preferable that the value satisfies ≦120. k1, k2, and k in Table 4 3、 k4, k5, k6, k7, k8, k9 and k 10 Each of k1, k2, and k3 in Table 4 is an integer of 0 or more. 3、 k4, k5, k6, k7, k8, k9 and k 10 may be different values ​​for each part. Here, k1, k2, k 3、 k4, k5, k6, k7, k8, k9 and k 10 is 0, this means that each of the moieties described in Table 4 is not included in the moiety represented by Y in formula (3). above k1+k2+k3+k4+k6+k7+k8+k 9+ k 10 Within the range of possible values, a side chain branched in the middle of the molecular chain and having at least one bond selected from the group consisting of an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond may be present within the moiety represented by Y.

[0037] A preferred structure of component B is one in which an unsaturated hydrocarbon bond, a carbon-oxygen double bond, or a carbon-nitrogen double bond, or any combination thereof, exists on the side chain side. More preferably, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, or any combination thereof, exists on the side chain side.

[0038] R3 and R4 in the above general formula (3) may each independently be a hydrolyzable group, a silanol group, a hydroxy group, a reactive organic group, an organic group containing a hydrolyzable group-containing silyl group, an alkylsilyl group, or a hydrogen atom. Preferably, they are an organic group containing a hydrolyzable group-containing silyl group, a hydroxy group, or a hydrogen atom. More preferably, they are a hydroxy group or a hydrogen atom. Examples of the hydrolyzable group include alkoxy groups having 1 to 10 carbon atoms such as a methoxy group, an ethoxy group, a propoxy group, or a butoxy group, alkoxyalkoxy groups having 2 to 10 carbon atoms such as a methoxymethoxy group or a methoxyethoxy group, acyloxy groups having 1 to 10 carbon atoms such as an acetoxy group, alkenyloxy groups having 2 to 10 carbon atoms such as an isopropenoxy group, halogen groups such as a chloro group, a bromo group, or an iodo group, or an amino group. Among them, a methoxy group, an ethoxy group, an isopropenoxy group, or a chloro group is preferable. Examples of the reactive organic group include a methacryl group, a carboxy group, an epoxy group, and a thiol group. Among these, methacryl groups and carboxy groups are preferred. The organic group containing a hydrolyzable group-containing silyl group is, for example, an organic group in which a hydrolyzable group is directly or indirectly bonded to a silicon atom. Examples of the hydrolyzable group include alkoxy groups having 1 to 10 carbon atoms such as methoxy, ethoxy, propoxy, and butoxy groups, alkoxyalkoxy groups having 2 to 10 carbon atoms such as methoxymethoxy and methoxyethoxy groups, acyloxy groups having 1 to 10 carbon atoms such as acetoxy groups, alkenyloxy groups having 2 to 10 carbon atoms such as isopropenoxy groups, halogen groups such as chloro, bromo, and iodo groups, and amino groups. The number of hydrolyzable groups in the organic group containing a hydrolyzable group-containing silyl group is preferably 1 to 3, more preferably 2 to 3, and even more preferably 3. The organic group containing a hydrolyzable group-containing silyl group may have an alkylsilyl group described below. That is, examples of organic groups containing a hydrolyzable group-containing silyl group include a trimethoxysilyl group, a dimethoxymethylsilyl group, an ethyldimethoxysilyl group, a methoxydimethylsilyl group, a diethylmethoxysilyl group, an ethylmethoxymethylsilyl group, a triethoxysilyl group, a diethoxyethylsilyl group, a diethoxymethylsilyl group, an ethoxydiethylsilyl group, and an ethoxyethylmethylsilyl group. Examples of the alkylsilyl group include alkylsilyl groups having 1 to 10 carbon atoms, and the number of carbon atoms in the alkylsilyl group is preferably 1 to 5, more preferably 1 to 3, and particularly preferably 1. The number of alkyl groups is preferably 1 to 3, more preferably 2 to 3, and further preferably 3. That is, examples of the alkylsilyl group include a trimethylsilyl group, a triethylsilyl group, an ethyldimethylsilyl group, and a diethylmethylsilyl group.

[0039] Specific examples of Component B include, but are not limited to, the compounds shown in Table 5. Component B may be a compound having one or more moieties containing at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond, and may be used singly or in combination of two or more kinds. [Table 5]

[0040] Specific examples of component B include the compounds shown in Table 6, but are not limited to these compounds. [Table 6]

[0041] The compounds shown in Table 6 are alkyl compounds having either a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, or a carbon-nitrogen double bond, and d-1 to d-4 are modified polyolefins in which a part of the side chain has been replaced with a different moiety. Examples of the replaced moiety include an imino moiety, a vinyl moiety, a carboxylic acid moiety, a carboxylic anhydride moiety, a ketene moiety, and an isocyanate moiety.

[0042] The composition ratio of component B to component A in the surface layer of the present disclosure is determined by measuring the peak intensity attributable to component A when the surface layer is measured with a micro Raman spectrometer. A , the peak intensity due to component B is P B When B / P A and can be expressed in the range of 0.04 to 3.00. The composition ratio of component B to component A in the surface layer of the present disclosure can be adjusted by the mass ratio of component B to component A in the material for forming the surface layer of the present disclosure. The composition ratio is preferably 0.10 to 1.00, and more preferably 0.20 to 0.60. If the composition ratio of component B to component A is less than 0.04, the stain-resistant properties are exhibited, but the frictional force does not increase when a high load is applied during processing, and the slipperiness is not suppressed, making it difficult to process the base material. Also, if the composition ratio of component B to component A is more than 3.00, not only does the stain-resistant properties decrease, but the frictional force becomes high even within the range of loads that users use on a daily basis, resulting in problems with usability such as the cloth getting caught when wiping off dirt.

[0043] The composition ratio of component B to component A can be determined by the following method. First, the area of ​​the surface layer to be measured by the 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 is also referred to as the "measurement area." Next, the measurement area is irradiated with an excitation laser beam, and the scattered light generated is measured to obtain a Raman spectrum. The measurement conditions are as follows: Measurement equipment: Thermo Fisher Scientific Raman microscope Objective lens magnification: 10x Excitation laser wavelength: 532nm Aperture diameter: 25μm ·Measurement area: 2μm Among the peaks in the obtained Raman spectrum, the peak derived from the siloxane bond was determined as the peak derived from component A, and the peak intensity of the peak was determined as P A Also, the obtained llama When peaks derived from C=C bonds, C=O bonds, or C=N bonds are obtained from the peaks in the NMR spectrum, the peaks derived from C=C bonds, C=O bonds, or C=N bonds are regarded as peaks derived from component B, and the peak intensities of the peaks are expressed as P B Let us assume that. In addition, when the peaks in the obtained Raman spectrum do not include peaks derived from C=C bonds, C=O bonds, or C=N bonds, the peak derived from CC bonds is regarded as the peak derived from component B, and the peak intensity of the peak is P B Let us assume that.

[0044] The friction force measured when the load applied to the surface layer is 14 kgf and the friction speed is 2.5 mm / sec is defined as X. When the load applied to the surface layer is 70 kgf and the friction force measured at a friction speed of 2.5 mm / sec is Y, The rate of change in frictional force represented by (YX) / X×100 is preferably 50% to 200%, and more preferably 80% to 140%. The rate of change can be controlled by the type of component A, the type of component B, and the composition ratio of component B to component A.

[0045] The surface layer of the present disclosure may contain any compound other than Component A and Component B as long as the effects of the present disclosure are not impaired.

[0046] First Embodiment FIG. 1 is a schematic diagram showing a configuration of a surface layer according to a first embodiment, and shows a configuration example in which a base layer is formed on a base material, and the surface layer is formed on the base layer. In FIG. 1, a base layer 12 is present on a base material 11, and a surface layer 13 is formed on the base layer 12. It should be noted that FIG. 1 is a schematic representation of a configuration having a surface layer, and does not represent the actual thicknesses of the base material 11, underlayer 12, and surface layer 13 to an accurate ratio.

[0047] (Base material 11) The base material 11 may be any material that is solid and capable of forming the undercoat layer 12, the surface layer 13, or the intermediate layer 14 or hard coat layer 15 described below, and examples of such material include glass, ceramic, resin, or a film made of metal, glass, resin, etc. When the above-mentioned materials are used as the base material of the optical component having a surface layer of the present disclosure, the base material is preferably one that can transmit visible light or light of a specific wavelength. The thickness of the base material is not particularly limited and can be appropriately set depending on the application.

[0048] (base layer 12) If necessary, a base layer may be formed. The base layer 12 is a layer that serves as a base for forming the surface layer 13, and improves the adhesion between the base material 11 and the surface layer 13. In this embodiment, in order to further improve the adhesion between the base material 11 and the surface layer 13, the underlayer 12 is formed on the base material 11, and the surface layer 13 is formed on the underlayer 12. The method for forming the underlayer is not particularly limited, and examples thereof include a vapor deposition method, a dipping method, a coating method, a spray method, and a spin coating method. The thickness of the underlayer 12 is not particularly limited, but is 2 nm to 150 nm, preferably 5 nm to 125 nm. The material forming the underlayer 12 is preferably a substance having a hydroxyl group on the surface thereof, such as metal oxides having a hydroxyl group on the surface thereof, such as SiO2 or Al2O3, or alkyl compounds having a hydroxyl group.

[0049] (Surface layer 13) The surface layer 13 is a surface layer of component A and component B of the present disclosure. The thickness of the surface layer 13 is not particularly limited, but is preferably 4 nm to 20 nm. If the thickness is 4 nm or more, sufficient antifouling properties are obtained, and if the thickness is 20 nm or less, transparency is good. The method for forming the surface layer is not particularly limited, but examples thereof include a vapor deposition method and a coating method. Examples of the coating method include spin coating, dip coating, bar coating, and spray coating. By using component A and component B in the method for forming the surface layer, a surface layer of component A and component B can be formed. For example, the surface layer is a vapor deposition layer. For example, the surface layer is a coating layer.

[0050] Second Embodiment FIG. 2 is a schematic diagram showing the configuration of a second embodiment of a surface layer, showing an example configuration having an intermediate layer formed on a base material, a base layer formed on the intermediate layer, and a surface layer on the base layer. 2, an intermediate layer 14 is formed on a base material 11, in which intermediate layers 14a, 14c having a low refractive index material and intermediate layers 14b, 14d having a high refractive index material are alternately laminated. A surface layer 13 is formed on a base layer 12 provided on the intermediate layer 14. It should be noted that FIG. 2 is a schematic representation of the configuration of the surface layer, and does not represent the actual thicknesses of the base material 11, intermediate layer 14, underlayer 12, and surface layer 13 to an accurate ratio.

[0051] (Middle class 14) As shown in FIG. 2, in the intermediate layer 14, the intermediate layers 14a and 14c stacked at odd positions from the base material 11 side are made of a low refractive index material, and the intermediate layers 14b and 14d stacked at even positions are made of a high refractive index material. In this embodiment, the underlayer 12 is also made of a low refractive index material, is laminated on the intermediate layer 14, and exerts an anti-reflection function together with the intermediate layer 14. In this embodiment, as an example, the intermediate layer 14 is four layers, and the underlayer 12 is formed on the intermediate layer 14d having a high refractive index material, so that the underlayer 12 is preferably made of a low refractive index material. In addition, for example, when the intermediate layer 14 is three layers, and the underlayer 12 is formed on the intermediate layer 14b having a high refractive index material, the underlayer 12 is preferably made of a low refractive index material. Moreover, the intermediate layer 14 is not limited to that in this embodiment, and layers made of a material with a medium refractive index may be appropriately laminated.

[0052] Examples of low refractive index materials include SiO2 (silicon dioxide), Al2O3-doped SiO2 (alumina-doped silicon dioxide), etc. However, low refractive index materials are not limited to these. Examples of high refractive index materials include alumina-containing titanium oxide-lanthanum oxide based mixed materials, titanium oxide, other mixed oxides mainly composed of titanium oxide, zirconium oxide, mixed materials mainly composed of zirconium oxide, niobium oxide, mixed materials mainly composed of niobium oxide, tantalum oxide, mixed materials mainly composed of tantalum oxide, tungsten oxide, mixed materials mainly composed of tungsten oxide, etc. However, the high refractive index materials are not limited to these. Examples of the medium refractive index material include aluminum oxide, other mixed compounds mainly composed of aluminum oxide, magnesium oxide, other mixed compounds mainly composed of magnesium oxide, yttrium fluoride, cerium fluoride, etc. However, the medium refractive index material is not limited to these.

[0053] There are no particular limitations on the thickness of intermediate layer 14 and each of the layers constituting intermediate layer 14 (14a, 14b, 14c, and 14d in FIG. 2); for example, the thickness of each layer constituting intermediate layer 14 can be set to 10 nm to 200 nm, and intermediate layer 14 can be formed by stacking the required number of layers. Although the intermediate layer 14 in this embodiment has a four-layer structure, the present disclosure is not limited to this at all, and the number of layers may be any number.

[0054] In addition, in this embodiment, the intermediate layer 14 is provided as a part of the anti-reflection film formed by alternately laminating low refractive index layers and high refractive index layers as described above, but the present disclosure is not limited thereto. For example, at least one layer having a function selected from other filters, mirrors, antistatic, anti-scratch hard coats, etc. may be formed between the base material 11 and the intermediate layer 14.

[0055] The base material, underlayer and surface layer in the second embodiment of the surface layer may be similar to those in the first embodiment of the surface layer.

[0056] <Optical components> FIG. 3 is a schematic diagram showing the configuration of the optical member according to the first embodiment. This embodiment is an optical member that can be used for eyeglass lenses. The optical member in Fig. 3 includes a base material 11 made of resin, a hard coat layer 15 for preventing scratches, an intermediate layer 14 having an anti-reflection function as described in the second embodiment of the surface layer, a base layer 12, and a surface layer 13. In Fig. 3, the intermediate layer 14 has a two-layer structure in which the intermediate layer 14a stacked at the odd-numbered positions from the base material 11 side is made of a low refractive index material, and the intermediate layer 14b stacked at the even-numbered positions is made of a high refractive index material, but the present invention is not limited to this and the number of layers may be any number. In addition, layers made of a medium refractive index material may be stacked as appropriate. Furthermore, for example, a melamine resin, a urethane resin, an acrylic resin, or a mixture of the above resins, a silane compound, etc. can be used for the hard coat layer 15. However, the material used for the hard coat layer is not limited to these. The optical member having the configuration in the first embodiment is not limited to a spectacle lens, but can be used for other known purposes.

[0057] FIG. 4 is a schematic diagram showing the configuration of an optical member according to a second embodiment. This embodiment is an optical member that can be used in an optical lens used in a camera or the like. The optical member in Fig. 4 includes a base material 11 made of glass, an intermediate layer 14 having an anti-reflection function as described in the second embodiment of the surface layer, a base layer 12, and a surface layer 13. In Fig. 4, the intermediate layer 14 has a two-layer structure in which the intermediate layer 14a stacked at the odd-numbered positions from the base material 11 side is made of a low refractive index material and the intermediate layer 14b stacked at the even-numbered positions is made of a high refractive index material, but the present invention is not limited to this and the number of layers may be any number. In addition, layers made of a medium refractive index material may be stacked as appropriate. The optical member shown in the configuration of the second embodiment is not limited to those used in optical lenses for cameras, but can also be used for optical filters, touch panels for displays, various films, and the like.

[0058] ≪Glasses≫ FIG. 5 is a schematic diagram showing the configuration of one embodiment of eyeglasses using the optical member of the present disclosure. This embodiment is composed of a spectacle lens 31 which is the optical member of the present disclosure described above, and a spectacle frame 32.

[0059] The surface layer forming material of the present disclosure is a surface layer forming material containing at least component A and component B, Component A has at least a siloxane moiety containing a siloxane bond, The component B has an organic moiety having at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond, and is represented by the following general formula (3): R3-Y-R4(3) is an alkyl compound having a structure represented by The site represented by Y is [C i H2i-2 ] j1 , [C i H 2i ] j2 , [C6H4] j3、 [C i+1 H 2i-1 Cl] j4 , [C i H i Cl] j5、 [C5H4O3] j6 , [C3H6N] j7 and [C4H6O2N] j8 and the i, j1, j2, j3, j4, j5, j6, j7, and j8 satisfy 32≦i×(j1+j2+j3+j4+j5+j6+j7+j8)≦750, and the j1, j2, j3, j4, j5, j6, j7, and j8 are each independently an integer of 0 or more; The i's are each independently an integer of 1 or more for each moiety, R3 and R4 each independently represent a hydrolyzable group, a silanol group, a hydroxyl group, a reactive organic group, an organic group containing a hydrolyzable group-containing silyl group, an alkylsilyl group, or a hydrogen atom; The mass ratio of component B to component A in the surface layer forming material is 0.04 to 3.00.

[0060] The surface layer forming material according to the present disclosure will be described. Components A and B constituting the surface layer forming material of the present disclosure are the same as components A and B constituting the surface layer of the present disclosure. The mass ratio of component A to component B in the surface layer forming material of the present disclosure is in the range of 0.04 to 3.00 when the mass of component A is 1. That is, the mass ratio of component B to component A in the surface layer forming material is 0.04 to 3.00. The mass ratio is preferably 0.10 to 1.00, and more preferably 0.20 to 0.60. When the mass ratio of component B to component A is less than 0.04, the surface layer formed using the surface layer forming material exhibits antifouling properties, but the frictional force does not increase when a high load is applied during processing of the base material or optical component having the surface layer, and the slipperiness is not suppressed, making it difficult to process the base material or optical component. Also, when the mass ratio of component B to component A is more than 3.00, the frictional force becomes high even within the range of load used daily by users, and not only does the antifouling properties of the surface layer formed using the surface layer forming material decrease, but also the cloth gets caught when wiping off dirt, resulting in poor usability. The mass ratio of component B to component A in the surface layer forming material can be determined by liquid chromatography mass spectrometry. Alternatively, it can be determined by using the mass values ​​of component A and component B weighed on a balance when preparing the surface layer forming material.

[0061] The surface layer forming material according to the present disclosure is not particularly limited as long as the mass ratio of component B to component A in the surface layer forming material is in the range of 0.04 to 3.00, and may contain other materials. The surface layer forming material may be solid or liquid. For example, it is possible to dissolve component A and component B in an organic solvent such as hexane or toluene to form a liquid solution. When the surface forming material is liquid, the surface layer can be formed by a coating method. The surface forming material may contain an organic solvent. The organic solvent is not particularly limited, but may be at least one selected from the group consisting of ketone solvents such as acetone and methyl ethyl ketone, ether solvents such as dimethyl ether, diethyl ether, and tetrahydrofuran, aromatic hydrocarbon solvents such as benzene, toluene, chlorobenzene, and xylene, and aliphatic hydrocarbon solvents such as isohexane (i.e., 2-methylpentane), 3-methylpentane, 2,2-dimethylbutane, and 2,3-dimethylbutane, normal hexane, heptane, and cyclohexane. The content of the organic solvent is not particularly limited, but can be, for example, 50 to 150 parts by mass when the total content of components A and B in the surface layer forming material is taken as 100 parts by mass. EXAMPLES

[0062] The present disclosure will be described more specifically below with reference to examples, but the present disclosure is not limited to the following examples.

[0063] [Example 1] (Preparation of surface layer forming material) The compound (A-3) described in Table 2-1 as component A and the compound (a-3) described in Table 5 as component B were mixed in a metal container so that the mass ratio of component B to component A was 0.20, thereby obtaining a surface layer forming material 1.

[0064] (Creation of the base layer) A 10 nm thick underlayer 12 made of SiO2 was formed by deposition using a vacuum deposition apparatus (dome diameter Φ900 mm, deposition distance 890 mm) on a 3 mm thick borosilicate glass substrate 11. The thickness of the underlayer 12 was measured using a spectroscopic ellipsometry (JA WOOLLAM-ESM300).

[0065] (Creation of surface layer) On the underlayer 12, the surface layer 13 of the present disclosure made of the surface layer forming material 1 was formed by deposition using a vacuum deposition apparatus (dome diameter Φ900 mm, deposition distance 890 mm) to produce an optical member of Example 1. The thickness of the surface layer 13 was measured using a spectroscopic ellipsometry (JA WOOLLAM-ESM300) and found to be 10 nm. In addition, the composition ratio of component B to component A in the obtained surface layer was measured using a micro-Raman spectrometer and found to be 0.20, which was the same as the mass ratio of component B to component A in the surface layer forming material. The structure of the obtained optical member is the same as that of the optical member having the surface layer of the present disclosure shown in FIG.

[0066] (Evaluation of friction force) For the surface layer of the produced optical member, the frictional force of the surface layer was measured according to the following method. The friction force was measured using an automatic friction and wear analyzer, Triboster 500, manufactured by Kyowa Interface Science Co., Ltd. The contact for measuring the friction force was 2 mm. 2 A rubber pad (lens blocking pad manufactured by 3M) cut into pieces was used, and the rubber pad was brought into contact with the surface layer of the optical component to measure the friction force. At this time, the load applied to the device was adjusted so that the load applied to the surface layer was 14 kgf and 70 kgf. The friction speed was 2.5 mm / sec. The results are shown in Table 7-1.

[0067] (Evaluation of antifouling properties) The antifouling properties of the surface layer of the prepared optical member were evaluated according to the following method. The degree of repelling of highlighter ink and the ease of wiping it off were used as indicators of the stain-resistant properties, and the evaluation was carried out based on the following criteria. The results are shown in Table 7-1. (Evaluation Criteria) A: After the pen tip is applied to the surface layer, the ink forms a ball and is bounced off over the course of 1 to 5 seconds, allowing it to be wiped off with Clint paper. B: After the pen tip is applied to the surface layer, the ink is not repelled even after more than 5 seconds, and it cannot be wiped off unless it is rubbed hard with Clint paper.

[0068] [Examples 2 to 214] The compounds shown in Tables 2-1 and 2-2 used as component A, the compounds shown in Tables 5 and 6 used as component B, and the composition ratio of component B to component A after the surface layer is formed are shown in Tables 2-1 and 2-2. The materials for forming the surface layer were prepared in a metal container in the same manner as in Example 1, except that the materials were changed to be as shown in Tables 7-1, 7-2, 8-1, and 8-2, respectively, and then a base layer and a surface layer were formed to prepare an optical member having a surface layer of the present disclosure. In addition, evaluation of frictional force and antifouling performance were performed in the same manner as in Example 1. The results are shown in Tables 7-1, 7-2, 8-1, and 8-2. In addition, in Examples 2 to 214, similarly to Example 1, the composition ratio of component B to component A in the obtained surface layer was consistent with the mass ratio of component B to component A in the surface layer forming material. [Table 7-1] [Table 7-2] [Table 8-1] [Table 8-2]

[0069] In Tables 7-1, 7-2, 8-1, and 8-2, the unit of friction force is gf. [Comparative Example 1] Only the compound (A-3) described in Table 2-1 was poured into a metal container to prepare a surface layer forming material, and then a base layer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. In addition, the frictional force and the antifouling performance were evaluated in the same manner as in Example 1. The results are shown in Table 9.

[0070] [Comparative Example 2] Only the compound (A-8) described in Table 2-1 was poured into a metal container to prepare a material for forming a surface layer, and then a base layer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. In addition, evaluation of frictional force and antifouling performance were performed in the same manner as in Example 1. The results are shown in Table 9.

[0071] [Comparative Example 3] Only the compound (B-3) described in Table 2-2 was poured into a metal container to prepare a material for forming a surface layer, and then an underlayer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. The results are shown in Table 9.

[0072] [Comparative Example 4] Only the compound (C-1) described in Table 2-2 was poured into a metal container to obtain a material for forming a surface layer, and then an underlayer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. The results are shown in Table 9.

[0073] [Comparative Example 5] Only the compound (D-1) described in Table 2-2 was poured into a metal container to obtain a material for forming a surface layer, and then an underlayer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. The results are shown in Table 9.

[0074] [Comparative Example 6] Only the compound (a-3) listed in Table 5 was poured into a metal container to obtain a material for forming a surface layer, and then an underlayer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. The results are shown in Table 9.

[0075] [Comparative Example 7] Only the compound (a-4) listed in Table 5 was poured into a metal container to obtain a material for forming a surface layer, and then an underlayer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. The results are shown in Table 9.

[0076] [Comparative Example 8] Only the compound (b-3) listed in Table 5 was poured into a metal container to obtain a material for forming a surface layer, and then an underlayer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. The results are shown in Table 9.

[0077] [Comparative Example 9] Only the compound (b-4) listed in Table 5 was poured into a metal container to obtain a material for forming a surface layer, and then an underlayer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. The results are shown in Table 9.

[0078] [Comparative Example 10] Only the compound (c-1) listed in Table 5 was poured into a metal container to obtain a material for forming a surface layer, and then an underlayer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. The results are shown in Table 9.

[0079] [Comparative Example 11] Only the compound (c-2) listed in Table 5 was poured into a metal container to obtain a material for forming a surface layer, and then an underlayer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. The results are shown in Table 9.

[0080] [Comparative Example 12] Only the compound (d-1) listed in Table 6 was poured into a metal container to obtain a material for forming a surface layer, and then an underlayer and a surface layer were formed in the same manner as in Example 1 to prepare an optical member. The results are shown in Table 9.

[0081] [Comparative Examples 13 and 14] An undercoat layer and a surface layer were formed and an optical member was produced in the same manner as in Example 1, except that the compounds used as component A and those used as component B and the composition ratios of components A and B after the formation of the surface layer were changed to those shown in Table 9. The results are shown in Table 9. In Comparative Examples 13 and 14, the composition ratio of component B to component A in the obtained surface layer was consistent with the mass ratio of component B to component A in the surface layer-forming material, as in Example 1. [Table 9] In Table 9, OL indicates that the friction force could not be measured due to an overload.

[0082] In Table 9, the unit of friction force is gf. [Example 215] The optical member (glass lens) obtained by the same process as in Example 5 was processed and attached to a commercially available frame to produce eyeglasses. The optical member of the eyeglasses thus produced was evaluated for frictional force and antifouling performance in the same manner as in Example 1. The results are shown in Table 7-1.

[0083] [Example 216] (Preparation of surface layer forming material) Compound (A-3) listed in Table 2-1 as component A and compound (a-3) listed in Table 5 as component B were mixed in a glass container so that the mass ratio of component B to component A was 0.30. Then, isohexane (product name: isohexane, manufactured by Tokyo Chemical Industry Co., Ltd.) in an amount equal to the total weight of components A and B was added to the glass container containing components A and B, and the mixture in the glass container was stirred until components A and B could no longer be visually confirmed, to obtain surface layer forming material 2.

[0084] (Creation of surface layer) The surface layer forming material 2 was applied to a 3 mm thick borosilicate glass substrate 11 using a bar coater, and then dried at 25°C for 24 hours to produce an optical member having a surface layer according to the present disclosure. The frictional force and antifouling performance were evaluated in the same manner as in Example 1. The results are shown in Table 7-1. In Example 216, as in Example 1, the composition ratio of component B relative to component A in the obtained surface layer and the composition ratio of component B relative to component A in the surface layer forming material were also evaluated. The mass ratio of component B to component B was consistent. [Explanation of symbols]

[0085] 11 Base material 12 Base layer 13 Surface layer 14 Middle Class 14a, 14c Intermediate layer having low refractive index material 14b, 14d Intermediate layer having high refractive index material 15 Hard coat layer 31 Eyeglass Lenses 32 Eyeglass frames

Claims

1. A surface layer, 2mm as contact ２ Using a rubber pad (3M lens blocking pad) cut into When the friction force was measured by bringing the rubber pad into contact with the surface layer, The friction force measured when the load applied to the surface layer is 14 kgf and the friction speed is 2.5 mm / sec is defined as X. When the load applied to the surface layer is 70 kgf and the friction force measured at a friction speed of 2.5 mm / sec is Y, X is 140 gf to 328 gf, A surface layer characterized in that a change rate of frictional force expressed by the formula (Y-X) x 100 / X based on X and Y is 50% to 200%.

2. The surface layer contains at least component A and component B. Component A is a compound having a siloxane moiety containing a siloxane bond, 2. The surface layer according to claim 1, wherein component B has an organic moiety having at least one bond selected from the group consisting of a saturated hydrocarbon bond, an unsaturated hydrocarbon bond, a carbon-oxygen double bond, and a carbon-nitrogen double bond.

3. An optical member having the surface layer according to claim 1 or 2.

4. Eyeglasses comprising the optical member according to claim 3.

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