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Resin composition for optical material

A resin composition and optical material technology, applied in optics, optical components, instruments, etc., can solve problems such as inability to stir, increase in viscosity of dispersion liquid, etc., and achieve yellowing inhibition over time, excellent transparency and heat resistance Effect

Active Publication Date: 2017-02-15
DAI ICHI KOGYO SEIYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, if a large amount of zirconia is added, the viscosity of the dispersion itself will increase significantly, and stirring may not be possible depending on the situation.

Method used

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  • Resin composition for optical material
  • Resin composition for optical material
  • Resin composition for optical material

Examples

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Embodiment

[0080] Hereinafter, examples and comparative examples of the present invention will be described. Hereinafter, "parts" indicating a compounding amount are "parts by weight", and "%" indicates "% by weight". Although not described, the present invention is not limited to the following examples, and appropriate changes and corrections can be made without departing from the technical scope of the present invention.

[0081]

manufacture example 1

[0082] [Production Example 1 (Synthesis of Dispersant A)]

[0083] In the toluene solvent of the reactor, put into branched chain C11~14 alkyl alcohol (trade name: EXXAL13, EXXONMobile company production) oxirane 10 mole adducts 640g (1 mole) and sodium monochloroacetate 152g (1.3 mol), and stir well. Thereafter, 52 g of sodium hydroxide was added on condition that the temperature of the reaction system was 60°C. Next, the temperature of the reaction system was raised to 80° C., and aged for 3 hours. After aging, 117 g (1.2 moles) of 98% sulfuric acid was added dropwise to the reaction system at 50° C. to obtain a white suspension solution. Next, the white suspension was washed with distilled water, and the solvent was distilled off under reduced pressure to obtain a dispersant A (R: branched C11-14 alkyl, AO: ethylene oxide, n: 10, X: CH 2 ).

manufacture example 2

[0084] [Manufacturing example 2 (synthesis of dispersant B)]

[0085] In Production Example 1, instead of the 10-mol adduct of branched chain C11-14 alkyl alcohol ethylene oxide, 598 g (1 mole) of the 10-mol adduct of isodecyl alcohol ethylene oxide was used. Carry out in the same way as Manufacturing Example 1, obtain dispersant B (R: isodecyl, AO: oxirane, n: 10, X: CH 2 ).

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Abstract

Provided is a resin composition for an optical material. The resin composition has a low viscosity even if formulated having high quantities of zirconium oxide particles and an organic silicon compound, is capable of inhibiting yellowing, and forms a resin having a high refractive index and exhibiting excellent transparency and heat resistance. The resin composition for an optical material is characterized by including zirconium oxide particles having an average particle size in the range of 1-30nm, a dispersant comprising a compound represented by formula (1), an organic silicon compound, and a compound having polymerizable unsaturated groups. In formula (1), R is a branched-chain C3-24 alkyl and / or alkenyl group, AO is a C1-4 oxyalkylene group, n is a value in the range of 3-30 expressing the average number of moles of alkylene oxide added, and X is a linking group comprising carbon, hydrogen, and / or oxygen.

Description

technical field [0001] The present invention relates to a resin composition for optical materials. More specifically, it relates to a low-viscosity resin composition for optical materials capable of suppressing yellowing and having a large refractive index and Abbe's number obtained by curing. Background technique [0002] Lenses made of resin are widely used in cameras, OA equipment, glasses, and the like. Such a resin lens is required to have a high refractive index. In order to increase the refractive index of the resin, for example, in Patent Document 1, a dispersion liquid obtained by dispersing a large amount of fine particles of metal oxides such as zirconia surface-treated with an organic acid in a resin is studied. In addition, in Patent Document 2, a dispersion obtained by treating metal oxide fine particles with an organosilicon compound and dispersing a large amount in a resin is studied. [0003] However, such zirconia particles are dispersed in the resin, whi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L57/00H01L23/29H01L23/31C08K3/22C08K5/09C08K5/54G02B1/04
CPCG02B1/04C08K5/54C08K2003/2244
Inventor 大本真德池直树
Owner DAI ICHI KOGYO SEIYAKU CO LTD