Patent ID: 9527948
Filing Date: 2016-12-27
CPC Classification: C08G,C08K,G02B,G02C

Claim Text:
1. A polymerizable composition comprising polyisocyanate(s) (A), polythiol(s) (B), thiol(s) (C) and catalyst(s) (D), wherein the polyisocyanate(s) (A) is at least one selected from 1,3-bis(isocyanatemethyl)cyclohexane, 1,4-bis(isocyanatemethyl)cyclohexane, bis(4-isocyanatecyclohexyl)methane, and bis(isocyanatemethyl)-bicyclo-[2.2.1]heptane, the polythiol(s) (B) is at least one selected from ethylene glycol bis(3-mercaptopropionate) and 1,4-butanediol bis(3-mercaptopropionate), the thiol(s) (C) is at least one selected from 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane, and 4,8-, 4,7-, or 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-tri-thiaundecane, and the catalyst(s) (D) is at least one polymerization catalyst selected from metal compounds, quaternary ammonium salts, and organic sulfonic acids.