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Preparation method of high refractive index sulfur-containing optical copolymerized resin

A technology of copolymer resin and high refractive index, which is applied in the field of preparation of high refractive index sulfur-containing optical copolymer resin, can solve the problems of low refractive index and narrow range of refractive index, and achieve the effect of increasing the refractive index

Inactive Publication Date: 2018-12-07
望江县天长光学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with optical glass, the low refractive index and narrow range of refractive index are one of the disadvantages of optical resins. Therefore, how to improve the refractive index of optical resins has always been a main direction in the research of optical resins.

Method used

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  • Preparation method of high refractive index sulfur-containing optical copolymerized resin
  • Preparation method of high refractive index sulfur-containing optical copolymerized resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of high refractive index sulfur-containing optical copolymer resin, comprising the steps of:

[0021] S1, 2-naphthol is added to be dissolved in the mixed solvent that is 1:1 toluene and ethyl acetate by weight ratio and dissolve completely, add sulfur dichloride under ice-bath condition, sulfur dichloride and 2-naphthol The molar ratio is 1:2.1, stirring and reacting at 10°C for 4h, heating the reaction solution to 90°C, distilling off most of the solvent, freezing until solids are precipitated, filtering, recrystallizing from absolute ethanol, filtering, and drying to obtain 1 , 1'-thiobis(2-naphthol);

[0022] S2. Dissolve 1,1'-thiobis(2-naphthol) in dichloromethane, add excess triethylamine to carry out alkalization reaction under stirring condition, triethylamine and 1,1'-thiobis(2 -naphthol) at a weight ratio of 1:1, then dropwise add acryloyl chloride under salt bath conditions, control the temperature of the reaction system at 5°C, stir for...

Embodiment 2

[0025] A preparation method of high refractive index sulfur-containing optical copolymer resin, comprising the steps of:

[0026] S1, 2-naphthol is added to be dissolved in the mixed solvent that is 2:1 toluene and ethyl acetate by weight ratio and dissolve completely, add sulfur dichloride under ice-bath condition, sulfur dichloride and 2-naphthol The molar ratio was 1:1.9, stirred and reacted at 20°C for 2h, the temperature of the reaction liquid was raised to 100°C, and most of the solvent was distilled off, then frozen until solid precipitated, filtered, recrystallized from absolute ethanol, filtered, and dried to obtain 1 , 1'-thiobis(2-naphthol);

[0027] S2. Dissolve 1,1'-thiobis(2-naphthol) in dichloromethane, add excess triethylamine to carry out alkalization reaction under stirring condition, triethylamine and 1,1'-thiobis(2 -naphthol) with a weight ratio of 1:1.5, then dropwise add acryloyl chloride under salt bath conditions, control the temperature of the reactio...

Embodiment 3

[0030] A preparation method of high refractive index sulfur-containing optical copolymer resin, comprising the steps of:

[0031] S1, 2-naphthol is added to be dissolved in the mixed solvent that is 1.5:1 toluene and ethyl acetate by weight ratio and dissolve completely, add sulfur dichloride under ice-bath condition, sulfur dichloride and 2-naphthol The molar ratio was 1:2, stirred and reacted at 15°C for 3h, the temperature of the reaction solution was raised to 95°C, and most of the solvent was distilled off, then frozen until solid precipitated, filtered, recrystallized from absolute ethanol, filtered, and dried to obtain 1 , 1'-thiobis(2-naphthol);

[0032] S2. Dissolve 1,1'-thiobis(2-naphthol) in dichloromethane, add excess triethylamine to carry out alkalization reaction under stirring condition, triethylamine and 1,1'-thiobis(2 -naphthol) at a weight ratio of 1:1.2, then dropwise add acryloyl chloride under salt bath conditions, control the temperature of the reaction...

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Abstract

The invention discloses a preparation method of high refractive index sulfur-containing optical copolymerized resin. The preparation method comprises the following steps: stirring 2-naphthol and sulfur dichloride to react to obtain 1,1'-sulfobis(2-naphthol); adding the 1,1'-sulfobis(2-naphthol) into excessive triethylamine for quaternization, then dropwise adding acryloyl chloride, and stirring and reacting to obtain 2,2'-bis(2-acroloyloxyl)-1,1'-sulfobinaphthyl; and copolymerizing the 2,2'-bis(2-acroloyloxyl)-1,1'-sulfobinaphthyl, methyl methacrylate and styrene in a condition that azodiisobutyronitrile serves as an initiator, and heating and curing the mixture to obtain the high refractive index sulfur-containing optical copolymerized resin. By introducing a sulfur-containing monomer rich in electronic conjugated structural units with great molar refrangibility into a synthesized monomer of the optical copolymerized resin, the refractive index of the copolymerized resin is improved and the monomer is copolymerized with methyl methacrylate and styrene to prepare transparent resin.

Description

technical field [0001] The invention relates to the technical field of optical resins, in particular to a preparation method of a high refractive index sulfur-containing optical copolymer resin. Background technique [0002] Due to the advantages of light weight, impact resistance, low price, easy processing and molding, and easy dyeing, optical resin is gradually replacing traditional optical materials such as optical glass and optical crystals, and is used in spectacle lenses, optical disc substrates, building materials, optical lenses and Prism and other fields. Refractive index is one of the properties that optical resin must consider. For example, lenses with the same focal length, lenses made of optical resin with high refractive index are thinner than lenses made of low refractive index resin, which can reduce the quality of the lens. The size is further miniaturized. However, compared with optical glass, low refractive index and narrow range of refractive index are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/14C08F222/24
CPCC08F212/08C08F220/14C08F222/1006
Inventor 欧阳胜明
Owner 望江县天长光学科技有限公司
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