JP2022157402A - Spectacle lens - Google Patents

Abstract

To provide a method for manufacturing a spectacle lens that has an excellent appearance and generates cleaning traces or uneven cleaning.SOLUTION: The method for manufacturing a spectacle lens includes a water-repellent layer formation layer for forming a water-repellent layer on a base material by using a water-repellent material composition. The water-repellent material composition contains a fluorine-containing silane compound. In the water-repellent layer formation step, the water-repellent material composition is heated at temperatures in the range between 400°C to lower than 600°C and is deposited so that a water-repellent layer is formed.SELECTED DRAWING: None

Description

The present disclosure relates to a method of manufacturing a spectacle lens.

When spectacles are worn, the surfaces of the spectacle lenses are likely to be stained with sweat, fingerprints, and the like. A water-repellent layer such as an antifouling film is provided on the surface of the spectacle lens in order to prevent such stains from adhering or to facilitate wiping off.

For example, in Patent Document 1, a light-transmitting substrate having a main surface and an antifouling film that covers the main surface and at least a part of itself is covered with a temporary topcoat, the antifouling film is a cured product of a polymerizable composition containing the following components:
55% to 80% by weight, preferably 60% to 70% by weight, of fluorine compounds, preferably perfluorinated compounds, containing at least one silanol group or silanol precursor at only one end of its main chain and mixtures thereof and 45% to 20% by weight, preferably 40 to 30% by weight, of a perfluoro compound, preferably a perfluoro compound, containing at least one silanol group or silanol precursor at both ends of its main chain. a second component B selected from among certain linear fluorine compounds and mixtures thereof, provided that the first component A and the second component B constitute 100% by weight;
the first component A and the second component B together being at least 50% by weight of the total weight of the membrane;
It is stated to preferably account for 60% by weight.

Japanese Patent Publication No. 2010-508541

In general, when a water-repellent layer of a spectacle lens is formed by vapor deposition using a water-repellent material composition containing a fluorine-containing silane compound, the water-repellent material composition is heated to 600° C. or higher. In addition, spectacle lenses are required to have no visible foreign matter, that is, to have no problems with the appearance of spectacle lenses, in order to ensure functions as spectacle lenses such as visibility. However, when the water-repellent material composition is heated to 600° C. or higher for vapor deposition, the water-repellent layer of the spectacle lens is unevenly vapor-deposited, and aggregates, which are unreacted vapor deposition components that can be visually confirmed, form the water-repellent layer. and looks like a foreign substance, resulting in a spectacle lens with an unfavorable appearance. In addition, when the spectacle lens deposited under the above conditions is wiped with a solvent or the like, there is also a problem that wiping unevenness and wiping marks occur.

An object of one embodiment of the present disclosure is to provide a method for manufacturing a spectacle lens that is excellent in appearance and suppresses occurrence of wiping unevenness and wiping marks in order to address the above-described problems.

As a result of intensive studies, the present inventors have solved the above problems by forming a water-repellent layer by heating and vapor-depositing a water-repellent material composition containing a fluorine-containing silane compound at 400° C. or more and less than 600° C. found to get.

Embodiments of the present disclosure relate to the following [1] to [7].
[1] A method for manufacturing a spectacle lens, comprising a water-repellent layer forming step of forming a water-repellent layer on a substrate using a water-repellent material composition,
The water-repellent material composition contains a fluorine-containing silane compound,
In the water-repellent layer forming step, the water-repellent layer is formed by heating and vapor-depositing the water-repellent material composition at 400° C. or more and less than 600° C., thereby forming a spectacle lens.
[2] The method for manufacturing a spectacle lens according to [1] above, wherein the water-repellent layer is formed by heating and vapor-depositing the water-repellent material composition at 450° C. or higher and 550° C. or lower.
[3] The method for manufacturing an eyeglass lens according to [1] or [2] above, wherein the water-repellent layer forming step is performed in a vapor deposition space controlled to a degree of vacuum of 3.0×10 ⁻² Pa or less.
[4] The method for manufacturing a spectacle lens according to any one of [1] to [3] above, wherein the vapor deposition time in the water-repellent layer forming step is 200 seconds or more and 1000 seconds or less.
[5] The method for manufacturing an eyeglass lens according to any one of [1] to [4] above, wherein the water-repellent material composition is heated using a halogen heater.
[6] The above [1] to [5], wherein the water-repellent material composition contains a fluorine-containing silane compound having a reactive silyl group at one end and a fluorinated alkyl group at the other end. A method for manufacturing an eyeglass lens according to any one of the items.
[7] The method for manufacturing a spectacle lens according to any one of [1] to [6] above, wherein the spectacle lens has a coefficient of dynamic friction of 0.028 or more.

According to an embodiment of the present disclosure, there is provided a spectacle lens that is excellent in appearance and that suppresses the occurrence of uneven wiping and after-wiping.

Hereinafter, embodiments and examples of the present disclosure will be described. The same reference numerals may be given to the same or corresponding parts, and the description thereof may not be repeated. In the embodiments and examples described below, when referring to the number, amount, etc., the scope of the present disclosure is not necessarily limited to the number, amount, etc., unless otherwise specified. In the following embodiments, each component is not necessarily essential for the embodiments and examples of the present disclosure unless otherwise specified.

In the description of a group (atomic group) in the present specification, a description without indicating whether it is substituted or unsubstituted includes both groups having no substituents and groups having substituents. For example, "alkyl group" includes an alkyl group having no substituent (unsubstituted alkyl group) and an alkyl group having a substituent (substituted alkyl group).
The “carbon number” of a group having a substituent means the carbon number of the portion excluding the substituent.

[Manufacturing method of spectacle lens]
A method for manufacturing a spectacle lens according to an embodiment of the present disclosure includes a water-repellent layer forming step of forming a water-repellent layer on a substrate using a water-repellent material composition. The water-repellent material composition contains a fluorine-containing silane compound, and the water-repellent layer-forming step heats and vapor-deposits the water-repellent material composition at 400° C. or more and less than 600° C. to form a water-repellent layer. It is a process of forming.

Thus, by forming the water-repellent layer formed on the substrate by vapor deposition by heating the water-repellent material composition at 400° C. or more and less than 600° C., the appearance is excellent, and wiping unevenness and wiping marks are reduced. It is possible to provide a spectacle lens in which the occurrence of is suppressed. Although the reason is not clear, it is considered as follows.

When the water-repellent layer of the spectacle lens is formed by vapor deposition using a water-repellent material composition containing a fluorine-containing silane compound, the fluorine-containing silane compound is included in the fluorine-containing silane compounds or in the water-repellent material composition during vapor deposition. It polymerizes with other ingredients that are Then, the polymer containing structural units derived from the fluorine-containing silane compound forms hydrogen bonds with the substrate surface.
When the water-repellent material composition is deposited by heating at a high temperature of 600° C. or higher, the deposition rate is high, so the deposition is performed on the surface of the substrate in an insufficiently polymerized state, resulting in aggregates that look like foreign matter. It is considered to be In addition, when the vapor deposition rate is high, the water-repellent layer does not have a dense structure and becomes a non-uniform layer, and vapor deposition occurs without sufficient hydrogen bonding between the surface of the substrate and the deposited material such as a polymer. Due to the presence of components such as polymers that do not have sufficient hydrogen bonds with the base material surface, when the lens is wiped with a solvent such as acetone for the purpose of cleaning the lens, uneven wiping occurs. and wiping marks may occur.
In the present disclosure, “unevenness in wiping” and “after wiping” refer to wiping paper, wiping cloth, etc., with organic solvents such as alcohols such as acetone, methanol, ethanol, and propanol for the purpose of cleaning spectacle lenses. After wiping the spectacle lens with the wiping paper or wiping cloth, it is produced on the spectacle lens and can be visually confirmed.

<Water-repellent layer forming process>
The water-repellent layer forming step is a step of forming a water-repellent layer on a substrate using a water-repellent material composition. This is the step of forming a water-repellent layer.
Here, heating at 400°C or higher and lower than 600°C means heating the pellets impregnated with the water repellent material composition at 400°C or higher and lower than 600°C.
The temperature for heating the water-repellent material composition is preferably 430° C. or higher, more preferably 450° C. or higher, and still more preferably 460° C. or higher from the viewpoint of forming a more uniform water-repellent layer. From the viewpoint of obtaining spectacle lenses in which unevenness and wiping marks are suppressed, the temperature is preferably 580° C. or lower, more preferably 550° C. or lower, and even more preferably 540° C. or lower.

In the present disclosure, vapor deposition is preferably performed by vacuum deposition. Vacuum deposition is preferably carried out in a deposition space controlled to a degree of vacuum of 3.0×10 ⁻² Pa or less, more preferably 1.0×10 ⁻² Pa or less.

A halogen heater, a resistance heater, an electron gun, or the like can be used for heating during vapor deposition. Among these, if a halogen heater is used for heating during vapor deposition, a thin film can be formed with high precision. The power of the halogen heater varies depending on the material used, the vapor deposition apparatus, the degree of vacuum, and the irradiation area, and can be adjusted as appropriate.

The vapor deposition time in the water-repellent layer forming step is preferably 200 seconds or longer, more preferably 300 seconds or longer, and even more preferably 400 seconds or longer, from the viewpoint of forming the water-repellent layer more uniformly. From the viewpoint of obtaining a spectacle lens in which wiping marks are suppressed, the time is preferably 1000 seconds or less, more preferably 800 seconds or less, and even more preferably 600 seconds or less.

Vapor deposition is preferably performed using pellets of porous material or the like impregnated with the vapor deposition material.
As the porous material, it is preferable to use a fused silica porous material, or a sintered filter obtained by sintering metal powder with high thermal conductivity such as copper or stainless steel. The mesh of the sintered filter is preferably 40 to 200 microns, more preferably 80 to 120 microns, from the viewpoint of obtaining an appropriate deposition rate.
In addition, pellets obtained by filling a copper container with steel wool are also preferably used.
The vapor deposition material may be used by impregnating the water repellent material composition as it is or by making a solution into a pellet such as a porous material.

In the present embodiment, after forming the water-repellent layer, a process of removing unreacted molecules with a fluorine-based solvent may be performed in order to remove unreacted molecules and molecules for which the reaction has not been completed from the water-repellent layer. good. By performing this step, the water repellency of the spectacle lens surface can be further enhanced.
Fluorinated solvents include perfluorohexane, perfluorocyclobutane, perfluorooctane, perfluorodecane, perfluoromethylcyclohexane, perfluoro-1,3-dimethylcyclohexane, perfluoro-4-methoxybutane, perfluoro-4- ethoxybutane, meta-xylene hexafluoride, and the like. Also, perfluoroether oil and chlorotrifluoroethylene oligomer oil can be used. _In addition, Freon _{225 (} a mixture of _CF3CF2CHCl2 and _{CClF2CF2CHClF} ) can be exemplified. One type of these fluorine-based solvents can be used alone, or two or more types can be used in combination. Among these, an organic compound having a perfluoro group and having 4 or more carbon atoms is preferable.
As a method for removing the unreacted portion of the water-repellent layer using a fluorine-based organic solvent, there is a method of wiping with paper or cloth impregnated with the chemical, or immersing the lens in a container (cleaning tank) containing the chemical. This is done by applying physical energy such as shaking or ultrasonic waves.

[Water-repellent material composition]
The water repellent material composition contains a fluorine-containing silane compound.
Water repellency is imparted to the water repellent layer by including the fluorine-containing silane compound in the water repellent material composition.

(Fluorine-containing silane compound)
From the viewpoint of obtaining spectacle lenses with excellent water repellency, the fluorine-containing silane compound according to the embodiment of the present disclosure preferably has a reactive silyl group at one end and a fluorinated alkyl group at the other end. .
In the present disclosure, one end of the fluorine-containing silane compound means one end of the main chain constituting the fluorine-containing silane compound, and the other end means the other end of the main chain constituting the fluorine-containing silane compound. refers to the end of
In the present disclosure, a reactive silyl group means a group having silicon and having reactivity with any component contained in the functional layer or the water-repellent material composition described below.
The reactive silyl group is preferably a group represented by formula (i) below.

In formula (i), R ¹ is a hydrolyzable group, R ² is hydrogen, a hydroxyl group, or an inert monovalent organic group, n is an integer from 0 to 2, * is represents the binding site.
R ¹ is preferably halogen, -OR ³ , -OCOR ³ , -OC(R ³ )=C(R ⁴ ) ₂ , -ON=C(R ³ ) ₂ or -ON=CR ⁵ , -OR ³ is more preferred. Here, R ³ is an aliphatic hydrocarbon group or an aromatic hydrocarbon group, R ⁴ is hydrogen or a lower aliphatic hydrocarbon group, and R ⁵ is a divalent aliphatic hydrocarbon group having 3 to 6 carbon atoms. is. Plural R ^1s may be the same or different.
R ³ is preferably an aliphatic hydrocarbon group having 1 to 3 carbon atoms, more preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group or an ethyl group. —OR ³ is preferably —OCH ₃ or —OC ₂ H ₅ , more preferably —OCH ₃ .
R ² is preferably a hydroxyl group or a monovalent hydrocarbon group having 1 to 4 carbon atoms. Plural R ² may be the same or different.
n is preferably 0 or 1, more preferably 0.

The fluorinated alkyl group is preferably a linear fluorinated alkyl group, more preferably a linear perfluoroalkyl group.
The fluorinated alkyl group preferably has 1 to 16 carbon atoms, more preferably 1 to 10 carbon atoms, still more preferably 1 to 6 carbon atoms, and still more preferably 1 to 3 carbon atoms.
Examples of fluorinated alkyl groups include perfluoromethyl group, perfluoroethyl group, perfluoro-n-propyl group, perfluoroisopropyl group, perfluoro-n-butyl group, perfluoro-tert-butyl group, perfluoro -n-hexyl group, perfluoro-n-octyl group, perfluoro-n-decyl group, perfluoro-n-dodecyl group and the like. Among these, a perfluoromethyl group, a perfluoroethyl group, or a perfluoro-n-propyl group is preferable, and a perfluoromethyl group is more preferable.

In one aspect of the present disclosure, the fluorine-containing silane compound is preferably a compound represented by the following formula (1) from the viewpoint of further improving water repellency.

In formula (1), R ⁶ is the reactive silyl group described above, preferably a group represented by formula (i), more preferably —Si(OR ³ ) ₃ . R ³ is preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group or an ethyl group. Plural R ^3s may be the same or different.

L ¹ is an alkylene group having 1 to 6 carbon atoms.
The alkylene group represented by L ¹ preferably has 1 to 5 carbon atoms, more preferably 2 to 4 carbon atoms.
Examples of the alkylene group represented by L ¹ include a methanediyl group, an ethane-1,2-diyl group, a propane-1,2-diyl group, a propane-1,3-diyl group, and a hexane-1,6-diyl group. mentioned. Among these, a propane-1,3-diyl group is preferred.
Rf ¹ is the above fluorinated alkyl group, preferably a linear or branched fluorinated alkyl group having 1 to 16 carbon atoms, more preferably a perfluoromethyl group.

p is an integer of 1 to 8, q is an integer of 1 to 6, s is an integer of 1 to 3, and (qs) is 1 or more.
a is 0-10, b is 0-10, c is 0-750, d is 0-800, and e is 0-200.
However, when a is 2 or more, a plurality of qs and a plurality of s may be the same or different, and when b is 2 or more, the plurality of b may be the same or different. The order is not limited.

p is preferably 1-8, more preferably 1-6, even more preferably 1-4.
q is preferably 1-5, more preferably 1-4, even more preferably 3.
s is preferably two.

a is preferably 1-8, more preferably 1-6, still more preferably 1-3.
b is preferably 1-8, more preferably 1-6, even more preferably 1-3.
c is preferably 1-500, more preferably 1-300, still more preferably 1-100.
d is preferably 1-500, more preferably 1-300, still more preferably 1-100.
e is preferably 0-100, more preferably 0-40, even more preferably 0-20.

The arrangement order of the structural unit represented by the repeating number a and the structural unit represented by the repeating number b is preferably the arrangement order represented by formula (1). In this case, the arrangement order of the structural units indicated by the repetition numbers c, d, and e is not limited.

The weight-average molecular weight of the compound represented by formula (1) obtained by gel permeation chromatography (GPC) in terms of polymethyl methacrylate is preferably 2,000 or more, more preferably 4,000 or more, and still more preferably 7, 000 or more, preferably 100,000 or less, more preferably 70,000 or less, and even more preferably 40,000 or less.

The compound represented by the following formula (1) is preferably a compound represented by the following formula (1-1) from the viewpoint of further improving the water repellency.

In formula (1-1), a, b, c, d, and e are as defined in formula (1), and preferred embodiments are also the same.

In another aspect of the present disclosure, the fluorine-containing silane compound is preferably a compound represented by the following formula (2) from the viewpoint of further improving water repellency.

In formula (2) above, X is iodine or hydrogen. Y is hydrogen or a lower alkyl group, and the lower alkyl group represented by Y is preferably an alkyl group having 1 to 3 carbon atoms. Z is fluorine or a trifluoromethyl group.

^R7 is the above reactive silyl group. R ⁷ is preferably a group represented by formula (i), more preferably -Si(OR ³ ) ₃ . R ³ is preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group or an ethyl group. Plural R ^3s may be the same or different.
^Rf2 is the above fluorinated alkyl group. Rf ² is preferably a linear or branched fluorinated alkyl group having 1 to 16 carbon atoms, more preferably CF ₃ --, C ₂ F ₅ --, C ₃ F ₇ --.
m is an integer of 0-2, f is an integer of 1-10, g is 0 or 1, h, i, j, and k are each independently an integer of 0-200.
m is preferably zero.
f is preferably an integer of 1-10.
h, i, j, and k are each independently preferably 1-50.
The fluorine-containing silane compound preferably has a molecular weight of 5×10 ² to 1×10 ⁵ , more preferably 5×10 ² to 1×10 ⁴ .

A preferred structure of the fluorine-containing silane compound represented by the above formula (2) is a compound represented by the following formula (2-1).

In the above formula (2-1), Y is hydrogen or a lower alkyl group, R ¹ is as defined in formula (i), l is an integer of 1 to 50, m is an integer of 0 to 2, r is Represents an integer from 1 to 10.

The trade name of the fluorine-containing silane compound represented by formula (2-1) includes, for example, Optool DSX and UF501 manufactured by Daikin Industries, Ltd., X-71-195 and KY-178 manufactured by Shin-Etsu Chemical Co., Ltd. are mentioned.

In one aspect of the present disclosure, the water repellent material composition may or may not contain the compound represented by the formula (2).In another aspect of the present disclosure, the water repellent material composition may not contain the compound represented by the above formula (2).

Other fluorine-containing silane compounds other than formulas (1) and (2) include, for example, 3,3,3-trifluoropropyltrimethoxysilane, tridecafluorooctyltrimethoxysilane, heptadecafluorodecyltrimethoxysilane, n-trifluoro(1,1,2,2-tetrahydro)propylsilazane, n-heptafluoro(1,1,2,2-tetrahydro)pentylsilazane, n-nonafluoro(1,1,2,2-tetrahydro) hexylsilazane, n-tridecafluoro(1,1,2,2-tetrahydro)octylsilazane, n-heptadecafluoro(1,1,2,2-tetrahydro)decylsilazane and the like.

In addition, as trade names, for example, Shin-Etsu Chemical Co., Ltd. KY-130, KY-500, KP-911, LS-1090, LS-4875, LS-4480, LS-2750, LS-1640, LS-410, LS-7150, GE Toshiba Silicone Co., Ltd. TSL-8257, TSL-8233, TSL-8185, TSL-8186, TSL-8183, XC95-A9715, etc. mentioned.

The content of the fluorine-containing silane compound in the water repellent material composition is preferably 50 to 100% by mass, more preferably 60 to 100% by mass, based on the total solid content of the water repellent material composition, More preferably 70 to 100% by mass, still more preferably 80 to 100% by mass.

The water-repellent material composition of the present embodiment may contain tetraalkylorthosilicate, fluororesin, and the like.

A tetraalkylorthosilicate has an alkyloxy group. The number of carbon atoms in the alkyloxy group is preferably 1-6, more preferably 1-3. Examples of alkyloxy groups include methoxy, ethoxy, propyloxy, and butoxy groups. Among these, a methoxy group or an ethoxy group is preferred. Examples of tetraalkylorthosilicates include tetraethylorthosilicate and tetramethylorthosilicate. Among these, tetraethyl orthosilicate is preferred.

The content of the tetraalkylorthosilicate in the water repellent material composition is preferably 1% by mass or more and 30% by mass or less, more preferably 2% by mass or more and 20% by mass, based on the total solid content of the water repellent material composition. % by mass or less, more preferably 3% by mass or more and 15% by mass or less.

Examples of fluororesins include polymers of fluorine-containing olefinic compounds and copolymers of fluorine-containing olefinic compounds and monomers copolymerizable therewith. More specifically, for example, polytetrafluoroethylene, tetraethylene-hexafluoropropylene copolymer, ethylene-tetrafluoroethylene copolymer, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, tetrafluoroethylene-hexafluoro Propylene copolymers, ethylene-chlorotrifluoroethylene copolymers, tetrafluoroethylene-hexafluoropropylene-perfluoroalkylvinyl ether copolymers, polychlorotrifluoroethylene, polyvinylidene fluoride, polyvinyl fluoride and the like can be mentioned.

The content of the fluororesin in the water repellent material composition is preferably 1% by mass or more and 30% by mass or less, more preferably 2% by mass or more and 20% by mass, relative to the total solid content of the water repellent material composition. or less, more preferably 3% by mass or more and 15% by mass or less.

The water repellent material composition may contain a solvent. Since the viscosity can be lowered by containing the solvent, when forming the water-repellent layer by vapor deposition, vapor deposition pellets used during vapor deposition can be easily impregnated with the solvent.
Examples of solvents include fluorine-modified solvents; hydrocarbon solvents such as petroleum benzine, mineral spirits, toluene and xylene; ketone solvents such as acetone, methyl ethyl ketone and methyl isobutyl ketone; alcohol solvents such as methanol, ethanol, isopropanol and n-propanol. are mentioned. These may be used alone or in combination of two or more. Among these solvents, fluorine-modified solvents are preferred.

Examples of fluorine-modified solvents include fluorine-modified aliphatic hydrocarbon solvents such as perfluoroheptane and perfluorooctane; fluorine-modified aromatic hydrocarbons such as 1,3-di(trifluoromethyl)benzene and trifluoromethylbenzene. system solvents; fluorine-modified ether-based solvents such as methyl perfluorobutyl ether and perfluoro(2-butyltetrahydrofuran); and fluorine-modified alkylamine-based solvents such as perfluorotributylamine and perfluorotripentylamine. These may be used alone or in combination of two or more. Among these, 1,3-di(trifluoromethyl)benzene, perfluoro(2-butyltetrahydrofuran) and perfluorotributylamine are preferred.

The total solid content in the water repellent material composition is preferably 50% by mass or more and 100% by mass or less, more preferably 60% by mass or more and 100% by mass or less, relative to the total amount of the water repellent material composition, More preferably, it is 70% by mass or more and 100% by mass or less.

[Glasses lens]
A spectacle lens according to an embodiment of the present disclosure has a base material and a water-repellent layer.
The spectacle lens of the present embodiment comprises a substrate, a hard coat layer, a primer layer, an interference fringe suppression layer, a polarizing layer, a photochromic layer, an antireflection layer, an ultraviolet absorption layer, an infrared absorption layer, an antistatic layer, and an antifogging layer. etc. may be provided. These functional layers may be used singly or in combination of two or more. For these functional layers, known techniques for spectacle lenses can be applied. Among these, it is preferable to provide a hard coat layer and an antireflection layer.

The spectacle lens preferably has a coefficient of dynamic friction of 0.028 or more. When the coefficient of dynamic friction is 0.028 or more, the slipperiness of the surface of the spectacle lens is good, and the anti-friction property is excellent.
In the present disclosure, the coefficient of dynamic friction is measured using a continuous weight surface property measuring machine "TYPE: 22H" (Shinto Kagaku Co., Ltd.), a φ10 steel ball, a vertical load of 62.4 gf, and a lens at a moving distance of 20 mm. It means the average value of the values obtained by measuring the surface average dynamic friction coefficient three times.

(Base material)
Resins made from various kinds of raw materials can be used as base materials for spectacle lenses.
Examples of resins that form the substrate include polycarbonate resins, urethane urea resins, (thio)urethane resins, polysulfide resins, polyamide resins, and polyester resins. (Thio)urethane resin means at least one selected from thiourethane resins and urethane resins. Among these, (thio)urethane resins and polysulfide resins are preferred.

Further, the substrate used for the spectacle lens of the present embodiment preferably has a refractive index of 1.50 or more, and more preferably a plastic substrate having a refractive index of 1.60 or more.
Preferable commercially available plastic lens substrates include acrylic allyl plastic lens "HILUX 1.50" (manufactured by HOYA Corporation, refractive index 1.50), thiourethane plastic lens "EYAS" (manufactured by HOYA Corporation, refractive index index 1.60), thiourethane plastic lens "MERIA" (manufactured by HOYA Corporation, refractive index 1.60), thiourethane plastic lens "EYNOA" (manufactured by HOYA Corporation, refractive index 1.67), polysulfide system Plastic lens "EYRY" (manufactured by HOYA Corporation, refractive index 1.70), polysulfide-based plastic lens "EYVIA" (manufactured by HOYA Corporation, refractive index 1.74), and the like.

The thickness and diameter of the substrate are not particularly limited, but the thickness is usually about 1 to 30 mm, and the diameter is usually about 50 to 100 mm.
The substrate may be either a finished lens or a semi-finished lens.
The surface shape of the substrate is not particularly limited, and may be flat, convex, concave, or the like.
The spectacle lens of the present disclosure may be any of a monofocal lens, a multifocal lens, a progressive power lens, and the like. As for the progressive power lens, the near portion region (near portion) and the progressive portion region (intermediate portion) are usually included in the aforementioned lower region, and the distance portion region (far portion) is included in the upper region. be

<Water repellent layer>
The water-repellent layer is formed on the substrate by vapor deposition using the water-repellent material composition described above. The water-repellent layer is preferably formed on functional layers such as the hard coat layer, antireflection layer, ultraviolet absorption layer, infrared absorption layer, photochromic layer, antistatic layer, and antifogging layer. Among these, it is more preferable to be formed on the antireflection layer. The water-repellent layer is preferably located on the outermost surface.
The film thickness of the water-repellent layer is preferably 5 nm or more and 20 nm or less, more preferably 6 nm or more and 17 nm or less, and even more preferably, from the viewpoint of obtaining a spectacle lens with excellent appearance and suppressed occurrence of wiping unevenness and wiping marks. It is 7 nm or more and 15 nm or less.

In the present invention, the examples, content, and various physical properties of each of the components described above may be arbitrarily combined with the items described as examples or preferred ranges in the detailed description of the invention.
Further, if the compositions described in the examples are adjusted to the compositions described in the detailed description of the invention, the invention can be implemented over the entire claimed composition range in the same manner as in the examples.

Specific examples are shown below, but the scope of the claims is not limited by the following examples.

(Examples 1 to 4 and Comparative Examples 1 to 3)
(1) Preparation of Vapor Deposition Pellets for Forming a Water-Repellent Layer “KY-1905” (manufactured by Shin-Etsu Chemical Co., Ltd.) was used as a water-repellent material composition containing a fluorine-containing silane compound, and the solid content after solvent evaporation was 50 mg. A metal pellet (a copper container filled with steel wool) was impregnated so that the solvent was evaporated by heating in an oven set at 50 ° C. for 60 minutes to obtain a pellet for vapor deposition.

(2) Formation of water-repellent layer In a glass container, 90 parts by weight of colloidal silica (Snowtex-40, Nissan Chemical Industries, Ltd.), 81.6 parts by weight of organosilicon compound methyltrimethoxysilane, γ-glycidoxy A solution prepared by adding 176 parts by mass of propyltrimethoxysilane, 2.0 parts by mass of 0.5N hydrochloric acid, 20 parts by mass of acetic acid, and 90 parts by mass of water was stirred at room temperature for 8 hours, left at room temperature for 16 hours, and added with water. A decomposition solution was obtained. To this solution were added 120 parts by mass of isopropyl alcohol, 120 parts by mass of n-butyl alcohol, 16 parts by mass of aluminum acetylacetone, 0.2 parts by mass of a silicone-based surfactant, and 0.1 part by mass of an ultraviolet absorber. After stirring for 2 hours, the mixture was aged at room temperature for 24 hours to obtain a coating liquid. A plastic lens substrate (manufactured by HOYA Corporation, trade name EYAS, prescription S0.00, C0.00, plastic lens for spectacles) pretreated with an alkaline aqueous solution is immersed in the coating liquid described above, and after immersion, The plastic lens was pulled up at a pulling speed of 20 cm/min and heated at 120° C. for 2 hours to form a cured film and a hard coat layer.

Next, on the hard coat layer, an antireflection layer was formed by alternately laminating silica and zirconia by a vacuum vapor deposition method.
After deposition of the antireflection layer, an ion gun treatment was performed to activate the surface. The ion gun treatment was performed under the following conditions.
Accelerating voltage: 200V
Accelerating current: 100mA
Introduced gas: oxygen (20 sccm)
Ion irradiation time: 45 seconds

After that, the dome on which the base material on which the hard coat and the antireflection layer were formed and the ion gun treatment was set was moved to a chamber for depositing the water-repellent layer. After setting the vapor deposition pellet prepared in (1) on the halogen heater heating table in the chamber, the vapor deposition pellet was heated at the vapor deposition temperature shown in Table 1 for 450 seconds with a halogen heater so that the vapor deposition pellet was heated. A spectacle lens on which a water-repellent layer was formed was obtained by vapor-depositing the component contained in.

[evaluation]
Various physical properties of the obtained spectacle lens were evaluated as follows.

<Appearance evaluation>
(Uneven wiping and after wiping)
The spectacle lenses obtained in the examples and comparative examples were wiped with an acetone-impregnated lens wiping paper "Dasper" (manufactured by Ozu Sangyo Co., Ltd.). The wiped spectacle lens was visually confirmed under a fluorescent lamp and evaluated according to the following criteria.
○: No wiping unevenness or wiping marks (It is difficult to find wiping unevenness or wiping marks.)
×: Wiping unevenness and wiping marks (either or both of wiping unevenness and wiping marks can be visually confirmed in the surface of the spectacle lens)

(Agglomerate)
Aggregates were evaluated according to the following criteria using a system microscope "OLYMPSU BX60" (manufactured by Olympus Corporation, reflection measurement).
○: Aggregates with a size of 1.0 μm or more cannot be confirmed ×: Aggregates with a size of 1.0 μm or more can be confirmed

(dynamic friction coefficient)
Using a continuous weighting surface property measuring machine "TYPE: 22H" (manufactured by Shinto Kagaku Co., Ltd.), the average dynamic friction coefficient was measured three times at a moving distance of 20 mm, the average value was obtained, and the evaluation was performed according to the following criteria.
○: The average value of the average coefficient of dynamic friction is 0.28 or more △: The average value of the average coefficient of dynamic friction is more than 0.026 and less than 0.28 ×: The average value of the average coefficient of dynamic friction is 0.026 or less The average of the average coefficient of dynamic friction When the value is 0.28 or more, the slipperiness is excellent and the abrasion resistance is excellent.

From Table 1, by forming a water-repellent layer by heating and vapor-depositing a water-repellent material composition containing a fluorine-containing silane compound at 400 ° C. or more and less than 600 ° C., the appearance is excellent, and the occurrence of wiping unevenness and wiping marks. It can be seen that a spectacle lens in which is suppressed is obtained.

Finally, the embodiments of the present invention will be summarized.
A method for manufacturing a spectacle lens, which is an embodiment of the present disclosure, includes:
A method for manufacturing a spectacle lens, comprising a water-repellent layer forming step of forming a water-repellent layer on a base material using a water-repellent material composition,
The water-repellent material composition contains a fluorine-containing silane compound,
In the water-repellent layer forming step, the water-repellent layer is formed by heating and vapor-depositing the water-repellent material composition at 400° C. or more and less than 600° C.
According to the embodiment described above, it is possible to provide a spectacle lens that is excellent in appearance and that suppresses the occurrence of wiping unevenness and wiping marks.

It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.
The present disclosure may arbitrarily combine the items described as examples or preferred ranges in the detailed description of the invention with respect to examples, contents, and various physical properties of each of the above components.
Further, if the compositions described in the examples are adjusted so as to achieve the compositions described in the detailed description of the invention, the disclosed embodiments can be carried out in the same manner as in the examples over the entire claimed composition range. can.

Claims (7)

A method for manufacturing a spectacle lens, comprising a water-repellent layer forming step of forming a water-repellent layer on a base material using a water-repellent material composition,
The water-repellent material composition contains a fluorine-containing silane compound,
In the water-repellent layer forming step, the water-repellent layer is formed by heating and vapor-depositing the water-repellent material composition at 400° C. or more and less than 600° C., thereby forming a spectacle lens. 2. The method of manufacturing a spectacle lens according to claim 1, wherein the water-repellent layer is formed by heating the water-repellent material composition at 450[deg.] C. or higher and 550[deg.] C. or lower for vapor deposition. 3. The method for manufacturing a spectacle lens according to claim 1, wherein the water-repellent layer forming step is performed in a vapor deposition space controlled to a degree of vacuum of 3.0×10 ⁻² Pa or less. The method for manufacturing a spectacle lens according to any one of claims 1 to 3, wherein the vapor deposition time in the water-repellent layer forming step is 200 seconds or more and 1000 seconds or less. The method for manufacturing an eyeglass lens according to any one of claims 1 to 4, wherein the water-repellent material composition is heated using a halogen heater. 6. The water-repellent material composition according to any one of claims 1 to 5, comprising a fluorine-containing silane compound having a reactive silyl group at one end and a fluorinated alkyl group at the other end. manufacturing method of spectacle lenses. The method for manufacturing a spectacle lens according to any one of claims 1 to 6, wherein the spectacle lens has a dynamic friction coefficient of 0.028 or more.