abstract |
Tolylene diisocyanate, hexamethylene 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, pentaerythritol tetrakismercaptoacetate, pentaerythritol tetrakismercaptopropionate, 2,5-bis (mercaptomethyl) -1, 4-dithiane, bis (mercaptoethyl) sulfide, 1,1,3,3-tetrakis (mercaptomethylthio) propane, 4,6-bis (mercaptomethylthio) -1,3-dithiane And at least one polythiol selected from 2- (2,2-bis (mercaptomethylthio) ethyl) -1,3-dithiethane. |