C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
18/104, 402/346,
C07D 339/08 (2006.01) B29D 11/00 (2006.01) C08G 18/38 (2006.01) C08G 18/52 (2006.01) C08G 75/08 (2006.01) G02B 1/04 (2006.01)
Patent
CA 2033239
This invention relates to a polythiol compound and an optical material therefrom. Having a rigid 1,4-dithian ring which increases the refractive index and Abbe's number, the polythiol compound used for the production of an optical material imparts the optical material with high heat resistance and excellent mechanical properties as well as excellent optical properties.
Nguyen Chau
Ohkubo Tsuyoshi
Okada Reisuke
Goudreau Gage Dubuc
Hoya Corporation
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