JPH11228802A - High refractive index type primer composition and plastic lens with primer using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition capable of forming a primer layer in a short time, improving the impact resistance of a plastic lens and reducing interference fringes observed between a lens base and a hard coated film, by including a metal compound sol having a high refractive index. SOLUTION: This composition comprises 60-95 wt.% of a polymerizable composition containing (A) a polycarbonate of formula I (R is an unsaturated group; R<1> is a bifunctional aliphatic group or aromatic group; (n) is 1-9) [preferably diethylene glycol bis(allyl carbonate)], (B) a polythiol of formula II (R<2> is a polyfunctional organic group; (m) is >=2) [preferably pentaerythritol tetra(3- mercaptopropionate)] and (C) a photopolymerization initiator and 5-40 wt.% of a metal compound sol having a high refractive index. Preferably, the composition comprises the component A and the component B in the equivalent ratio of 2:1 to 3:1 and 0.005-10 wt.% of the component C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-refractive-index type primer composition for a high-refractive-index plastic lens and a lens with a primer using the same.

[0002]

2. Description of the Related Art In general, a plastic lens is very easily damaged, so that a hard coat film is usually provided on the lens surface, and an antireflection film on which an inorganic substance is vapor-deposited is formed on the hard coat film to suppress surface reflection. Is provided. However, plastics provided with both a hard coat film and an anti-reflection film have a disadvantage that the impact resistance is remarkably inferior to a plastic lens provided with no film or a plastic lens provided only with a hard coat film. In order to solve this drawback, there has been known a method of providing a primer layer made of a urethane resin between a plastic lens and a hard coat film. However, since the urethane resin is formed by heat curing, a curing time of several hours is required. Also, with conventional primers,
The interference fringes observed between the lens substrate and the hard coat film could not be adjusted.

[0003]

According to the present invention, a primer layer can be formed in a short time, the impact resistance of a plastic lens can be improved, and a high refractive index lens substrate and a hard coat film can be formed. It is an object of the present invention to provide a primer composition that can reduce interference fringes seen between them, and a lens with a primer using the same.

[0004]

According to the present invention, it has been found that a film can be formed in a short time by using a photocurable resin, and interference fringes can be reduced by blending a metal compound sol having a high refractive index. It was completed based on this finding. The high refractive index type primer composition according to the present invention comprises (A) a compound represented by the following general formula (I): R—O—CO — [— O—R ¹ —O—CO—] n —OR (I) In the formula, R represents an unsaturated group, R ¹ represents a divalent aliphatic or aromatic group, and n represents a number of 1 to 9], a polycarbonate represented by the general formula (II) ^{) R 2 - (- SH)} m ··· (II) wherein, R ² represents a polyvalent organic group, m represents an integer of 2 or more] polythiol and (C) a photopolymerization initiator represented by The composition comprises 60 to 95% by weight of a polymerizable composition containing an agent and 5 to 40% by weight of a metal compound sol having a high refractive index. The plastic lens with a primer of the present invention is characterized by having a photocurable primer layer of the above primer composition on a plastic lens substrate.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION As described above, the high refractive index type primer composition of the present invention comprises a polycarbonate ester as the component (A), a polythiol as the component (B) and a light as the component (C). It comprises a polymerizable composition containing a polymerization initiator and a metal compound sol having a high refractive index. The polycarbonate used as the component (A) is a polycarbonate represented by the above general formula (I).
Is a monovalent unsaturated group, for example, a vinyl group, a 1-propenyl group, an allyl group, an isopropenyl group, a 1-butenyl group, a 2-butenyl group, a 2-pentynyl group, an ethynyl group and the like. R ¹ represents a divalent aliphatic or aromatic group, and specific examples thereof include trimethylene glycol,
Bivalent aliphatic hydrocarbon groups or bis (4-oxyphenyl) methane constituting aliphatic diols such as tetramethylene glycol, pentamethylene glycol, hexamethylene glycol, decamethylene glycol, diethylene glycol, p-xylylene glycol, etc. 1,1-bis (4-oxyphenyl) ethane, 1,1-bis (4-oxyphenyl) butane, 1,1-bis (4-oxyphenyl) isobutane, 1,1-bis (4-oxyphenyl) cyclohexane And divalent aromatic hydrocarbon groups constituting aromatic diols such as 2,2-bis (4-oxyphenyl) propane and 2,2-bis (4-oxyphenyl) butane. Of the polycarbonates represented by the general formula (I), trimethylene glycol bisallyl carbonate and diethylene glycol bis (allyl carbonate) are preferred.

As the component (B), a polythiol represented by the general formula (II) is used.

[0007]

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[0008] wherein, R ³ represents a divalent organic group, R ⁴
Represents a polyvalent organic group, and m represents an integer of 2 or more.], From the viewpoints of impact resistance and dyeing properties of the polymer. This compound is an ester of polythiol, and specific examples thereof include ethylene glycol bis (thioglycolate), ethylene glycol bis (3-mercaptopropionate), trimethylolpropane tris (thioglycolate), and trimethylolpropane. Tris (3-mercaptopropionate), pentaerythritol tetra (mercaptoacetate), pentaerythritol tetra (thioglycolate), pentaerythritol tetra (3-mercaptopropionate) and the like can be mentioned.

In the primer composition of the present invention, the above-mentioned polycarbonate (A) and polythiol (B) are used in an equivalent ratio of 2: 1 to 1: 3, preferably 1.2. : 1 to 1: 1.3. If the amount of the component (A) is larger than this equivalent ratio range, the polymerization is not completed, and if the amount of the component (B) is larger, a polymer having a strong monomer odor is obtained after the polymerization. The polymerizable composition used in the present invention may contain a monomer other than the components (A) and (B) as long as the object of the present invention is not impaired. Examples of monomers that can be contained include acrylic compounds,
Styrene-based compounds, epoxy compounds and the like can be mentioned.

[0010] The primer composition of the present invention further contains a photopolymerization initiator as a component (C). The photopolymerization initiator is preferably added so as to be contained in a ratio of 0.005 to 10% by weight based on the total amount of the polymerizable composition and the high refractive index metal compound sol. The amount of the photopolymerization initiator is 0.00
When the amount is less than 5% by weight, a polymerization reaction sufficient for curing does not occur and the adhesion becomes insufficient. When the amount exceeds 10% by weight, the reaction rapidly occurs after the photopolymerization initiator is added, and As a result, the stability is impaired. In these cases,
It can also cause serious troubles in manufacturing equipment.

The photopolymerization initiator is not particularly limited.
Various types can be used, for example, benzoin,
Benzyl, benzoin methyl ether, acetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1- (4-isopropylphenyl) -2
-Hydroxy-2-methylpropan-1-one, 4-
(2-hydroxyethoxy) phenyl- (2-hydroxy-2-propyl) ketone, 1-hydroxycyclohexylphenylketone, 2,2-dimethoxy-2-phenylacetophenone, 2-methyl-1- [4- (methylthio) phenyl 2-morpholinopropan-1-one,
2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butan-1-one, benzophenone,
4,4′-bis (dimethylamino) benzophenone,
4,4′-bis (diethylamino) benzophenone,
N, N-dimethylaminoacetophenone, 2-methylanthraquinone, 2-ethylanthraquinone, 1-chloroanthraquinone, 2,4-diethylthioxanthone,
2,4-diisopropylthioxanthone, 2,4,6-
Trichloromethyl-s-triazine, 2- (p-chlorophenyl) -4,6-bis (trichloromethyl) -s-
Triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) -s-triazine, 2,4-bis (trichloromethyl) -4′-methoxyphenyl-s-triazine, 2- (4-methoxy -Naphth-1-yl) -4,
6-bis (trichloromethyl) -s-triazine, 2-
p-methoxystyryl-4,6-bis (trichloromethyl) -s-triazine, 2- (2 ', 4'-dimethoxystyryl) -4,6-bis (trichloromethyl) -s-
Triazine, 2,2'-bis (o-chlorophenyl)-
4,4 ′, 5,5′-tetraphenylbisimidazolyl, 2,2′-bis (o-chlorophenyl) -4,
4 ', 5,5'-tetra- (p-methoxyphenyl) bisimidazolyl, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, bisacylphosphine oxide, triphenylphosphine, triphenylphosphite, trilauryl-trithiophosphite , Bis (2,6-dimethoxybenzoyl) -2,4,4-trimethylpentylphosphine oxide, (η ⁵ to 2,
4-cyclopentadien-1-yl) [(1,2,3,
4,5,6-η)-(1-methylethyl) benzene]-
Iron (1 +)-hexafluorophosphate (1
-) And the like, and these can be used alone or in combination of two or more. Among these, it is particularly preferable to use a combination of 2-hydroxy-2-methyl-1-phenylpropan-1-one and bisacylphosphine oxide. Further, such a photopolymerization initiator is used as N, N-dimethylaminobenzoic acid ethyl ester, N, N-dimethylaminobenzoic acid isoamyl ester, triethanolamine, 2-mercaptobenzothiazole, 2-mercaptobenzoxazole,
Mercaptobenzimidazole, 2-mercapto-5
It can be used in combination with one or more known photosensitizers such as methylthio-1,3,4-thiazole.

Further, the primer composition of the present invention contains a metal compound sol having a high refractive index, which can be adjusted so as to eliminate interference fringes between the lens substrate and the hard coat film. Here, as the metal compound sol having a high refractive index, an organic solvent dispersed sol containing a compound of at least one metal selected from the group consisting of Fe, Al, Ti, Zr, Sn and Sb is preferable. Such metal compounds are more specifically Fe, Al, T
Examples include oxides or composite oxides of metals selected from the group consisting of i, Zr, Sn and Sb, and metal oxides containing a trace amount of one of these metals. Examples of the organic solvent include methanol, isopropyl alcohol, methyl cellosolve, and ethyl cellosolve.

The primer composition of the present invention preferably contains the metal compound sol having a high refractive index as described above in an amount of 5 to 40% by weight, more preferably 13 to 38% by weight. When the content of the metal compound sol having a high refractive index is less than 5% by weight, the refractive index becomes low, and when it exceeds 40% by weight, cracks are easily formed. The mixing ratio of the high refractive index metal compound sol and the polymer composition in the primer composition of the present invention,
The mixing ratio (weight ratio) of the sol and the resin is 1: 1.5
１ ： 1: 19, preferably 1: 2.33〜1: 9
Is optimal. If the amount of sol is large, cracks are easily formed, and if the amount of resin is large, the refractive index is low.

The primer composition of the present invention may optionally contain an ultraviolet absorber in an amount of 0.01 to 3.0% by weight. The amount of UV absorber added is 0.01
If the amount is less than 30% by weight, a sufficient ultraviolet absorbing effect cannot be obtained. If the amount exceeds 3.0% by weight, the ultraviolet absorbing agent is saturated and does not dissolve. The ultraviolet absorber is not particularly limited as long as it is soluble in one or both of the monomers, and various types can be used. For example, benzophenone such as 2-hydroxybenzophenone and 2,4-dihydroxybenzophenone , Salicylate such as phenyl salicylate, (2′-hydroxyphenyl) benzotriazole, (2′-hydroxy-5′-methylphenyl) benzotriazole, 2,2-methylenebis [4-
(1,1,3,3-tetramethylbutyl) -6- (2H
-Benzotriazol-2-yl) phenol] and cyanoacrylate-based ultraviolet absorbers such as ethyl-2-cyano-3,3-diphenylacrylate. These may be used alone or in combination of two or more. They can be used in combination.

[0015] The primer composition of the present invention further comprises:
If necessary, a stabilizer, a curing accelerator, an antifoaming agent, a leveling agent, a surfactant, a pigment and the like can be added.
Since the primer composition of the present invention is cured by light irradiation, it is necessary to mix the above components in a dark place.

The plastic lens with a primer of the present invention is obtained by applying the above-described primer composition of the present invention onto a plastic lens substrate, irradiating the coating film with light to cause a polymerization / curing reaction, and Is obtained by forming a photocurable primer layer having a high value. At this time, the purpose of improving the coatability of the primer composition, viscosity adjustment,
The components can be diluted with a solvent for the purpose of uniformly mixing the components, but the organic solvent used here is not particularly limited. In order to obtain a composition having good coatability, for example, 3-methyl-3-methoxybutanol, propylene glycol monomethyl ether, dipropylene glycol monomethyl ether, tripropylene glycol monomethyl ether, ethyl cellosolve, methyl cellosolve, methyl carbitol And an organic solvent such as ethyl carbitol.

In addition, hydrocarbon solvents such as n-hexane, n-decane and cyclohexane, aromatic hydrocarbon solvents such as benzene, toluene and xylene, butyl acetate,
Examples include ester solvents such as benzyl acetate, butyl carbitol, methyl cellosolve acetate, alcohol solvents such as ethylene glycol and diethylene glycol, ketone solvents such as methyl ethyl ketone, and derivatives thereof.

In order to apply the primer composition of the present invention to a plastic lens substrate, any method such as a spin coating method, a spray coating method, and a dipping method can be applied. By irradiating ultraviolet rays immediately after application, the coating film is quickly cured to form a primer layer. At this time,
The thickness of the primer layer is preferably 0.01 to 2.0 μm, more preferably 0.05 to 0.5 μm. If the thickness of the primer layer is less than 0.01 μm, the effect as a primer is not seen,
If it exceeds μm, cracks are likely to enter.

The obtained primer layer has a shock absorbing property, improves the adhesion of the hard coat film, and can reduce interference fringes seen between the lens substrate and the heart coat film. In addition, it has high transparency and does not impair the appearance as a lens. Any known hard coat film and antireflection film can be formed on the primer layer. For example, a hard coat film is formed by immersing a hard coat liquid in which a hydrolyzate of an organoalkoxysilane, metal oxide fine particles and a curing catalyst are dispersed, a brush coating method,
After coating by spin coating or the like, it can be formed by heat curing. As the antireflection film, a single-layer or multi-layer film designed based on an optical theory is used. As a material, Z is used as a high refractive index material.
_{nO, TiO 2, CeO 2,} Sb 2 O 5, SnO 2, Z
rO ₂ , Al ₂ O ₃ , MgF ₂ as a low refractive index material, S
iO _x (x is 1.50 ≦ x ≦ 2.00), LiF, 3N
aF.AlF ₃ , AlF ₃ , Na ₃ AlF _{6 and the} like. The antireflection layer can be formed by any method such as a vacuum evaporation method, a sputtering method, an ion plating method, and an ion beam assist method.

Next, the present invention will be further described with reference to the drawings. FIG. 1 is a cross-sectional view of a plastic lens with a primer of the present invention, and FIG. 2 is a cross-sectional view of a plastic lens further provided with a hard coat film and an antireflection film on a primer layer. As shown in FIG. 1, the plastic lens with a primer of the present invention has a primer layer 2 obtained by applying the primer composition of the present invention on the surface of a plastic lens substrate 1 and photo-curing. . The primer layer 2 is excellent in transparency and shock absorption, and improves the adhesion with the hard coat film 3 formed thereon. By further forming the antireflection film 4 on the hard coat film 3, it is possible to provide a plastic lens with an antireflection film having no interference fringes and excellent in impact resistance.

[0021]

Next, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto. Note that diethylene glycol bis (allyl carbonate) used in the following examples is represented by the formula (I) in which R = —CH ₂ —CH ＝ CH ₂ and R ¹ = —CH ₂ —
It is a compound of CH ₂ —O—CH ₂ —CH ₂ —, and pentaerythritol tetra (3-mercaptopropionate) is represented by the formula (III) where m = 4 and R ³ = —C
H ₂ —CH ₂ —, R ⁴ =

[0022]

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Is a compound of the formula: Example 1 (1) Preparation of Primer Composition (A1) 20.0 parts by weight of methanol-dispersed titanium oxide / zirconium oxide composite sol (solid content: 30% by weight, trade name: Opto-Lake 1130Z), diethylene glycol bis (Allyl carbonate) 42.32 parts by weight, pentaerythritol tetra (3-mercaptopropionate) 37.68 parts by weight, 2 as a photopolymerization initiator
-Hydroxy-2-methyl-1-phenylpropane-1
0.8 parts by weight of ON (manufactured by Ciba Specialty Chemicals Co., Ltd., trade name: Darocur 1173) and 0.7 parts by weight of a silicon-based surfactant L-7001 (manufactured by Nippon Unicar Co., Ltd.) as a leveling agent in a dark place. And made uniform. The primer composition (A1) was covered so as not to be exposed to light.

(2) Preparation of Hard Coating Solution (B1) 180 parts by weight of γ-glycidoxypropyltrimethoxysilane was charged into a reaction vessel equipped with a rotor, and stirred at 0.01 N with a magnetic stirrer. An aqueous solution of -HCl (40 parts by weight) was added at a time, and hydrolysis was performed for 2 hours to obtain a hydrolyzate. The above hydrolyzate is mixed with methanol-dispersed tin oxide / tungsten oxide composite sol (solid content: 30%).
% By weight, manufactured by Nissan Chemical Industries, Ltd., trade name: HIS-30
M) 360 parts by weight, 4 parts by weight of aluminum acetylacetonate as a curing catalyst, and 0.45 parts by weight of a silicon-based surfactant SH30PA (manufactured by Toray Dow Corning Co., Ltd.) as a leveling agent, and after sufficient stirring, The solution was filtered through a 3 μm glass fiber filter to obtain a hard coat solution (B1).

(3) Coating A urethane plastic lens having a refractive index n = 1.67 is used.
After washing, the primer composition prepared in the above (1)
(A1) was coated on both sides by spin coating. This and
The rotation speed is 5000 rpm and the rotation time is 30 seconds.
Was. Immediately after coating, 100W metal halide lamp
Irradiation for 360 seconds, UV curing, 0.1μm thick
A primer layer was formed. Then, the primer layer
The hard coat liquid (B1) prepared in (2) above was
It was applied by a dip method. The lifting speed of the lens at this time
The degree was 300 mm / min. 100 applied lenses
Heat treatment at 4 ° C for 4 hours to form a 2 µm thick hard coat film
Formed. Furthermore, a vacuum evaporation method is applied on this hard coat layer.
From the lens side to the atmosphere side_Two , Zr
O_Two , SiO_Two , TiO_Two , SiO_Two Many consisting of five layers
A thin film is formed, and the optical film thickness of the first
_Two Layer, next ZrO_Two And SiO _Two Equivalent film thickness of the next TiO
_Two , Top layer SiO_Two Each layer is λ / 4 (here
And λ is 550 nm).
did.

Example 2 A mixture of 2-hydroxy-2-methyl-1-phenylpropan-1-one and bisacylphosphine oxide (Ciba Specialty Chemicals Co., Ltd.) was used as a component of the photopolymerization initiator of the primer composition. A plastic lens having a primer layer, a hard coat film and an anti-reflection film was produced in the same manner as in Example 1 except that 0.8 parts by weight of Irgacure 1700 (trade name) was used.

Example 3 Among the components of the primer composition, 40 parts by weight of trimethylene glycol bisallyl carbonate as the polycarbonate of the component (A) and pentaerythritol tetra (3-mercaptopropionate) as the polythiol of the component (B) A primer layer and a hard coat layer were produced in the same manner as in Example 1 except that 40 parts by weight were used.

Comparative Example 1 Hexamethylene diisocyanate type non-block polyisocyanate (manufactured by Nippon Polyurethane Industry Co., Ltd.)
100 parts by weight of brand name Coronate HX) and a polyester type polyol (manufactured by Nippon Polyurethane Industry Co., Ltd.
167 parts by weight of Nipporan 125), 2 parts by weight of zinc octylate as a curing catalyst, and Florade FC430 (manufactured by Sumitomo 3M Limited) as a leveling agent.
One part by weight, 500 parts by weight of ethyl acetate and 250 parts by weight of ethyl methyl ketone as a solvent were uniformly mixed. Using this primer composition, the curing conditions of the primer were set to 6
A plastic lens having a hard coat film and an antireflection film formed thereon was manufactured in the same manner as in Example 1 except that the temperature was set to 0 ° C. for 30 minutes.

Comparative Example 2 A plastic lens having a hard coat film and an antireflection film was produced using a urethane plastic lens having a refractive index of n = 1.67 without forming a primer layer.

The performance of the plastic lenses obtained in each of the above Examples and Comparative Examples was evaluated by the following methods, and the results are shown in Table 1. Evaluation method 1) Adhesion A cross cut tape test was performed to evaluate the adhesion of the film. Specifically, a 100 mm square of 1 mm square was made on the coating surface with a cutter knife, and then cellophane adhesive tape (Nichiban Co., Ltd., trade name Cellotape) was strongly adhered. Remove vigorously in the ° direction. This operation was repeated three times. Thereafter, the number of grids on the surface of the coating layer that had not been peeled off from the lens was examined, and the number of grids that were not peeled was represented by X / X / 100. In this case, the larger the value of X, the better the adhesion. That is, if the result of the cross cut tape test is “100/100”, it indicates that the film was not peeled at all. 2) Scratch resistance The surface of the anti-reflection film of the plastic lens is treated with steel wool (# 0000) under a load of 100 g to apply a force of 30 g.
The degree of scratching when rubbing was evaluated according to the following criteria. A: The area with the scratch is within 10%. B: The area with a scratch exceeds 10% and is within 50%. C: The area with the scratch exceeds 50%.

3) Impact resistance According to the FDA standard, a ball drop test was conducted in which a steel ball weighing 16 g was dropped from a height of 127 cm, and the impact resistance was examined by observing the lens. 4) Heat Resistance After leaving the plastic lens in a constant temperature oven at 100 ° C. for 10 minutes, the plastic lens was taken out under a normal temperature environment, and the presence or absence of cracks and the number of cracks at that time were evaluated according to the following criteria. A: No crack occurred. B: Fine cracks occurred on the lens. C: Extremely thick cracks occurred on the lens. 5) Interference fringes The presence or absence of the interference fringes of the plastic lens was visually confirmed when the light of the fluorescent lamp was reflected on the lens surface in a dark room, and the occurrence of the fringe pattern due to the light interference. The evaluation was performed based on the following criteria. A: No stripe pattern is observed. B: A slight stripe pattern is observed. C: A stripe pattern is remarkably observed. 6) Transmittance The transmittance of the plastic lens was measured using a spectrophotometer (U-4000, manufactured by Hitachi, Ltd.). The measurement results are shown as average values from 350 to 750 nm.

[0032]

[Table 1]

[0033]

Since the primer composition of the present invention is photocurable, it cures in a curing time of several minutes, has high transparency,
In addition, a lens with improved impact resistance and significantly reduced interference fringes between the substrate and the hard coat film can be obtained.
Further, the use of the lens with a primer of the present invention also improves the adhesion of the hard coat film.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a plastic lens with a primer of the present invention.

FIG. 2 is a sectional view of a lens of the present invention in which a hard coat film and an antireflection film are formed on a primer layer. Reference Signs List 1 plastic lens substrate 2 primer layer 3 hard coat film 4 anti-reflection film

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI G02B 1/10 G02B 1/10 A // C09D 169/00 Z

Claims (9)

[Claims] (A) General formula (I) R—O—CO — [— O—R ¹ —O—CO—] n—OR (I) wherein R is unsaturated R ¹ represents a divalent aliphatic or aromatic group, and n represents a number of 1 to 9], (B) a general formula (II) R ² -(-SH ) M (II) wherein R ² represents a polyvalent organic group, and m represents an integer of 2 or more, and (C) a photopolymerization initiator. A high refractive index type primer composition comprising 60 to 95% by weight of a product and 5 to 40% by weight of a metal compound sol having a high refractive index. 2. The plastic lens primer composition according to claim 1, wherein the component (A) and the component (B) are contained in an equivalent ratio of 2: 1 to 1: 3. 3. The primer composition for a plastic lens according to claim 2, wherein component (A) and component (B) are contained in an equivalent ratio of 1.2: 1 to 1: 1.3. 4. The high refractive index type primer composition according to claim 1, wherein the component (C) is contained at a ratio of 0.005 to 10% by weight. 5. The high refractive index primer composition according to claim 1, further comprising an ultraviolet absorber. 6. The high refractive index primer composition according to claim 1, wherein diethylene glycol bis (allyl carbonate) is used as the component (A) and pentaerythritol tetra (3-mercaptopropionate) is used as the component (B). 7. A trimethylene glycol bisallyl carbonate as the component (A) and pentaerythritol tetra (3-mercaptopropionate) as the component (B).
The high refractive index type primer composition according to claim 1, wherein 8. A high-refractive index metal compound sol comprising Fe, A
The high refractive index type primer composition according to claim 1, which is an organic solvent dispersed sol containing a compound of at least one metal selected from the group consisting of 1, Ti, Zr, Sn and Sb. 9. The plastic lens substrate according to claim 1, wherein
A plastic lens with a primer, comprising a light-cured primer layer of the primer composition according to any one of items 8 to 10.