| abstract |
The polymerizable composition for optical materials of the present invention includes phenylene diisocyanate, 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, 4,8 or 4,7 or 5,7 Dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaoundecan, 2,5-bis (mercaptomethyl) -1,4-dithiane, bis (mercaptoethyl) sulphate Feed, 1,1,3,3-tetrakis (mercaptomethylthio) propane, 4,6-bis (mercaptomethylthio) -1,3-dithiane, 2- (2,2-bis (mercapto) Methylthio) ethyl) -1,3-dithiethane, 1,1,2,2-tetrakis (mercaptomethylthio) ethane, 3-mercaptomethyl-1,5-dimercapto-2,4-diti And polythiol compounds selected from the group consisting of apentane and tris (mercaptomethylthio) methane. |