Colecciones nacionales e internacionales de patentes

1. (WO2018043901) METHOD FOR PREPARING POLYTHIOL COMPOUND FOR OPTICAL MATERIAL

Pub. No.:    WO/2018/043901    International Application No.:    PCT/KR2017/007009
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Tue Jul 04 01:59:59 CEST 2017
IPC: G02B 1/04
C07C 321/02
C08G 18/38
C07C 319/02
Applicants: SKC CO., LTD.
에스케이씨 주식회사
Inventors: HONG, Seung Mo
홍승모
SHIM, Jongmin
심종민
SEO, Hyeon Myeong
서현명
SHIN, Junghwan
신정환
Title: METHOD FOR PREPARING POLYTHIOL COMPOUND FOR OPTICAL MATERIAL
Abstract:
One embodiment relates to a method for preparing a polythiol compound for an optical material. According to the method for preparing a polythiol compound, according to the embodiment, a particular type of base is used in a hydrolysis process when preparing a polythiol compound, and the concentration of the base is adequately controlled, and thus a desired polythiol compound may be economically and efficiently prepared by performing a sufficient degree of hydrolysis within a short time. Thus, a polymerizable composition and an optical material obtained thereby exhibit excellent optical properties such as refractive index, color, etc., and thus may be usefully employed in manufacturing various plastic optical materials such as an eyeglass lens, camera lens, etc.