Composition for resin and optical lens obtained therefrom

一种组合物、树脂的技术，应用在光学、光学元件、光学部件等方向，能够解决组合物粘度升高、材料色调变差、浇铸聚合操作困难等问题

Active Publication Date: 2010-12-29
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in these prepolymerization and degassing treatment steps, the viscosity of the composition increases, especially when the compounding amount of the inorganic compound having a sulfur atom and / or selenium atom is increased to obtain a high refractive index, it is possible that , the usual cast polymerization operations such as filtration or mold injection become difficult and the hue of the resulting material deteriorates significantly

Method used

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  • Composition for resin and optical lens obtained therefrom
  • Composition for resin and optical lens obtained therefrom
  • Composition for resin and optical lens obtained therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0168] At 50°C, 29 parts by weight of sulfur as compound (a) (hereinafter referred to as "compound a-1"), and 71 parts by weight of bis(β-epithiopropyl) sulfide as compound (b) (hereinafter referred to as referred to as "compound b-1"), and 14 parts by weight of bis(mercaptomethyl)disulfide (hereinafter referred to as "compound c-1") as compound (c) were thoroughly mixed until uniform. Next, 0.15 parts by weight of 2-mercapto-1-methylimidazole was added as a prepolymerization catalyst, and the prepolymerization was carried out while fully stirring at 50°C until no sulfur was precipitated even after cooling to 30°C. The time required for the reaction was 30 minutes. Thereafter, at 30° C., 1 part by weight of compound c-1 (15 parts by weight in total), 0.03 parts by weight of tetrabutylphosphonium bromide as compound (d), 0.1 parts by weight of 1 part of di-n-butyltin dichloride as compound (e), mixed thoroughly to form a homogeneous mixture. This mixture was degassed at 100 T...

Embodiment 2

[0171] Example 1 was repeated except that the added compound c-1 was changed from 14 parts by weight to 19 parts by weight. Table 1 shows the evaluation results of the viscosity of the resin composition after the degassing treatment and after 2 hours, the refractive index and Abbe number of the obtained optical material, heat resistance, and color tone.

Embodiment 3～14

[0187] In Example 1, compound a-1, compound b-1 and compound c-1 were changed to the compounds shown in the following table 2, and the addition amount of each compound was changed to the amount shown in the following table 2, Other than that, the resin composition was prepared in the same manner as in Example 1, the viscosity of the resin composition after the degassing treatment and after 2 hours, the refractive index and Abbe number of the obtained optical material, heat resistance, and color tone The evaluation of was carried out in the same manner as in Example 1.

[0188] Table 2

[0189]

[0190] According to the present invention, since the viscosity of the resin composition containing an inorganic compound having a sulfur atom and / or a selenium atom can be reduced, the casting polymerization operation including the filtration step becomes easy, and the color tone of the obtained optical material becomes good.

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Abstract

Provided is a composition for resins which comprises an inorganic compound having a sulfur atom and / or selenium atom, an episulfide compound, and a mercapto disulfide compound. The composition for resins may have a reduced viscosity to facilitate the operation of casting / polymerization and yield an optical material having an improved color tone. Furthermore provided is an optical material having a high refractive index and obtained by curing the resin composition.

Description

technical field [0001] The present invention relates to a composition for a resin, and further relates to an optical material having a high refractive index and an Abbe number obtained by using the composition for a resin containing an inorganic compound having a sulfur atom and / or a selenium atom. The optical material obtained by the present invention is suitable for optical products such as plastic lenses, prisms, optical fibers, information recording substrates, filters, adhesives, etc., especially for plastic lenses for glasses. Background technique [0002] In recent years, plastic materials have been widely used in various optical materials, especially eyeglass lenses, due to their light weight, high toughness, and easy dyeing. The most important properties required by optical materials, especially spectacle lenses, are high refractive index and high Abbe number. A high refractive index can make the lens wall thinner, and a high Abbe number reduces the chromatic aberra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/08G02B1/04C08G75/00G02C7/00
CPCC08G75/08
Inventor 竹内基晴青木崇
Owner MITSUBISHI GAS CHEM CO INC
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