Title:
COMPOSITION FOR HIGHLY REFRACTIVE EPISULFIDE-BASED OPTICAL MATERIAL, HAVING IMPROVED LIGHT RESISTANCE, AND METHOD FOR PREPARING OPTICAL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2021/172771
Kind Code:
A1
Abstract:
The present invention relates to a benzotriazole-based compound which improves the light resistance of a highly refractive episulfide-based optical material, a composition for an episulfide-based optical material, comprising same, and an optical material. The present invention provides a composition for an episulfide-based optical material, the composition comprising an episulfide compound represented by chemical formula 1, a benzotriazole-based compound represented by chemical formula 2, and a polymerization catalyst. The benzotriazole-based compound of chemical formula 2 addresses the problem of deterioration in light resistance that occurs in optical lenses of a highly refractive episulfide-based optical material and the like, and can improve the transparency of lenses. In the present invention, by comprising a small amount of the benzotriazole-based compound in the composition for an episulfide-based optical material, an episulfide-based optical material having good light resistance and transparency can be obtained.
Inventors:
JANG DONG GYU (KR)
ROH SOO GYUN (KR)
HAN BYUNG HEE (KR)
CHOI SOOK YOUNG (KR)
ROH SOO GYUN (KR)
HAN BYUNG HEE (KR)
CHOI SOOK YOUNG (KR)
Application Number:
PCT/KR2021/001040
Publication Date:
September 02, 2021
Filing Date:
January 27, 2021
Export Citation:
Assignee:
KOC SOLUTION CO LTD (KR)
International Classes:
C08G75/06; C08K3/06; C08K5/29; C08K5/3475; C08K5/37; G02B1/04
Foreign References:
| KR20170064529A | 2017-06-09 | |||
| JP2000212282A | 2000-08-02 | |||
| KR20140023493A | 2014-02-27 | |||
| KR20180040651A | 2018-04-20 | |||
| JP4152732B2 | 2008-09-17 |
Attorney, Agent or Firm:
YOU, Byung Sun (KR)
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