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Resin composition for optical material and optical material using the same

A resin composition and optical material technology, applied in the field of optical materials, can solve the problems of reduced heat resistance, difficulty in realization, lack of practicability of lenses, etc., and achieve the effect of high strength and high heat resistance

Active Publication Date: 2009-07-29
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if a high-strength lens is to be obtained, the phenomenon of lowering heat resistance may sometimes occur (JP Patent No. 3541707, JP Patent Publication No. 2001-131257 and JP Patent No. 3562579), although it is necessary to have both strength and durability. hot, but hard to achieve
In addition, there is a phenomenon that the cured product is opacified or insufficiently cured, so that it is not practical as a lens for eyeglasses (JP Patent Laid-Open No. 11-352302, JP Patent No. 3642973, and JP Patent Laid-Open No. 2005-272788)
Furthermore, there is also a problem that it is difficult to put into practical use due to the use of difficult-to-synthesize materials (JP Patent No. 3706036)

Method used

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  • Resin composition for optical material and optical material using the same
  • Resin composition for optical material and optical material using the same
  • Resin composition for optical material and optical material using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Mix (a) 67 parts by weight of bis(β-epithiopropyl) sulfide as an episulfide compound, (b) 16 parts by weight of m-xylylenedithiol as a xylylenedithiol compound, ( c) 17 parts by weight of 1,3-bis(1-isocyanate-1-methylethyl)benzene as a xylylene diisocyanate compound, 0.005 parts by weight of polyoxyethylene lauryl ether sodium phosphate as an internal release agent Parts by weight, 0.05 parts by weight of dibutyltin dichloride as a polymerization regulator, 0.1 parts by weight of tetrabutylphosphonium bromide as a polymerization catalyst, 0.005 parts by weight of catechol as an antioxidant, and 0.005 parts by weight of catechol as an antioxidant, and as an ultraviolet absorber 0.5 parts by weight of 2-(2-hydroxy-5-tert-octylphenyl)benzotriazole was stirred at room temperature to form a homogeneous liquid. Next, the above-mentioned composition was degassed for 30 minutes under a reduced pressure of 10 Torr, and then poured into a lens mold, and the temperature was raised...

Embodiment 2～6

[0079] Carry out the operation of embodiment 1 by the composition shown in table 1. The obtained lenses were all transparent and had good appearance. Optical physical properties, strength, and heat resistance were measured, and the results are shown in Table 1.

Embodiment 7～14

[0081] As shown in Table 1, when the composition of (d) a compound containing both ester groups and mercapto groups was used in combination, the obtained lenses were all transparent and had a good appearance. Optical physical properties, strength, and heat resistance were measured, and the results are shown in Table 1.

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Abstract

Disclosed is a resin composition for an optical material, which comprises (a) an episulfide compound represented by a specific structural formula, (b) a xylylenedithiol compound and (c) a xylylenediisocyanate compound. The resin composition has excellent optical properties, high strength and high heat resistance. Also disclosed is an optical material produced by curing the resin composition.

Description

technical field [0001] The present invention relates to a resin composition for optical materials, and further relates to optical materials such as plastic lenses, prisms, optical fibers, information recording substrates, and filters using the resin composition. Among them, the present invention is suitably used as a plastic lens. 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 physical properties required in optical materials, especially as eye lenses, include low specific gravity, high transparency, low yellowness, high heat resistance, and high strength, and the optical properties include high refractive index. and a high Abbe number. A high refractive index can make the lens thinner, and a high Abbe number can reduce the chromatic aberration of the lens, but as the refractive index increases, the Abbe number de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/30C08G18/52G02B1/04
CPCC08G18/7642C08G18/3876C08G18/7635G02B1/041C08G18/765C08L75/04C08G18/30C08G18/52C08G18/16G02B1/04
Inventor 堀越裕竹内基晴
Owner MITSUBISHI GAS CHEM CO INC
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