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Anti-impact super-tough lens material and preparation method thereof

An impact-resistant and super-tough technology, applied in the field of lenses, can solve the problems of reduced impact strength, reduced impact resistance of lenses, unsatisfactory adhesion between wear-resistant coatings and primers, etc., to achieve improved attachment Effects of poor grip, excellent abrasion resistance, and excellent UV resistance

Inactive Publication Date: 2020-01-17
无锡福照玻璃镜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the above-mentioned polysiloxane-containing coating improves the wear resistance of the lens, it also reduces the impact resistance of the lens, especially after the thin and light resin lens is coated with a wear-resistant hard coating , its impact strength tends to decrease compared to that before uncoating, and the adhesion between the above-mentioned wear-resistant coating and the base coat is not entirely satisfactory

Method used

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  • Anti-impact super-tough lens material and preparation method thereof
  • Anti-impact super-tough lens material and preparation method thereof
  • Anti-impact super-tough lens material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1, the consumption of raw material is as follows in the present embodiment:

[0029] Isocyanates: 4,4-dicyclohexylmethane diisocyanate (20g), hexamethylene diisocyanate (28g);

[0030] Polymercaptans: pentaerythritol tetrakis(3-mercaptopropionate) (13.5g) and thiodiglycol (13.5g);

[0031] Polyolamine: bis(2-hydroxymethyl)amino-tris(hydroxymethyl)methane (27g);

[0032] UV absorber: 2-(2'-hydroxyl-5'-tert-octylphenyl)benzotriazole (0.6g);

[0033] Release agent: HILUB-67 (0.08g);

[0034] Catalyst: isopropyl titanate (0.1 g).

[0035] 2. Preparation method

[0036] S1. Weigh each component in proportion, mix and stir the isocyanate and catalyst, then add UV absorber and release agent in sequence, after vacuum defoaming at 25°C for 70 minutes, add polythiol and polyol amine, mix and stir Vacuum defoaming at 18°C ​​for 35 minutes, then vacuum defoaming again for 15 minutes after stopping stirring, to obtain the resin lens composition ingredients;

[0037] S2. Dry ni...

Embodiment 2

[0039] 1, the consumption of raw material is as follows in the present embodiment:

[0040] Isocyanates: 4,4-dicyclohexylmethane diisocyanate (20g), hexamethylene diisocyanate (28g);

[0041] Polymercaptans: pentaerythritol tetrakis(3-mercaptopropionate) (13.5g) and thiodiglycol (13.5g);

[0042] Polyolamine: Bis(2-hydroxymethyl)amino-tris(hydroxymethyl)methane (27g);

[0043]UV absorber: 2-(2'-hydroxyl-5'-tert-octylphenyl)benzotriazole (0.6g);

[0044] Release agent: HILUB-67 (0.08g);

[0045] Catalyst: isopropyl titanate (0.1 g).

[0046] 2. Preparation method

[0047] S1. After mixing and stirring isocyanate and catalyst, add UV absorber and mold release agent in sequence, after vacuum degassing at 28°C for 50 minutes, add polythiol and polyol amine, mix, and vacuum defoam at 22°C for 30 minutes while stirring, After stopping the stirring, vacuum defoaming again for 10 minutes to obtain the resin lens composition ingredients;

[0048] S2. Dry nitrogen and pressurize, ...

Embodiment 3

[0050] 1, the consumption of raw material is as follows in the present embodiment:

[0051] Isocyanates: 4,4-dicyclohexylmethane diisocyanate (20g), hexamethylene diisocyanate (20g);

[0052] Polymercaptans: pentaerythritol tetrakis(3-mercaptopropionate) (27g) and thiodiethylene glycol (9g);

[0053] Polyolamine: Bis(2-hydroxymethyl)amino-tris(hydroxymethyl)methane (23g);

[0054] UV absorber: 2-(2'-hydroxyl-5'-tert-octylphenyl)benzotriazole (0.3g);

[0055] Release agent: HILUB-67 (0.18g);

[0056] Catalyst: isopropyl titanate (0.05 g).

[0057] 2. Preparation method

[0058] S1. Weigh each component in proportion, mix and stir the isocyanate and catalyst, then add UV absorber and mold release agent in turn, after vacuum defoaming at 25°C for 70 minutes, add polythiol and polyol amine, mix and stir Vacuum defoaming at 18°C ​​for 35 minutes, then vacuum defoaming again for 15 minutes after stopping stirring, to obtain the resin lens composition ingredients;

[0059] S2. ...

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Abstract

The invention discloses an anti-impact super-tough lens material and a preparation method thereof. The anti-impact super-tough lens material is prepared from 40-57 parts of isocyanate, 23-36 parts ofpolybasic mercaptan, 23-36 parts of polybasic alcohol amine, 0.3-1.4 parts of an ultraviolet absorbent, 0.05-0.18 part of a release agent and 0.05-0.2 part of a catalyst. According to the lens material, the isocyanate is used as a main material, the polybasic mercaptan and the polybasic alcohol amine are added, a stable crosslinking network is formed in a system, and the lens material is transparent, uniform and compact; and under the catalysis of lead acetate or titanate catalysts, cyanate ester, the polybasic mercaptan, the polybasic alcohol amine, the ultraviolet absorbent and the release agent react to form the lens material provided with a mutually-penetrating network structure, and the lens material has excellent impact resistance, wear resistance, adhesive force, hardness and lighttransmittance, thereby having good application prospects.

Description

technical field [0001] The invention relates to the field of lens technology, in particular to an impact-resistant super-tough lens material and a preparation method thereof. Background technique [0002] In recent years, the demand for optical resin lenses in the domestic and foreign glasses markets has been increasing. Compared with glass lenses, resin lenses have the advantages of light weight, good dyeing performance, and easy processing. Medium and high refractive index optical resin lenses are more transparent High efficiency, UV protection, ultra-thin and other unique advantages are favored by users. Generally, in the lens industry, the refractive index is above 1.60 as the high refractive index, the refractive index is 1.56 as the medium refractive index, and the refractive index is below 1.56 as the low refractive index. However, resin lenses are relatively soft, and are easily scratched and scratched to leave scratches during use. It has been widely recognized in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/73C08G18/38C08G18/32C08K5/3475C08K5/132C08K5/3492G02B1/04
CPCC08G18/3275C08G18/3278C08G18/3855C08G18/3876C08G18/73C08G18/751C08G18/758C08K5/132C08K5/3475C08K5/3492G02B1/04
Inventor 吴炳照
Owner 无锡福照玻璃镜业有限公司
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