BASF patents thermally stable photocurable compositions

April 13, 2012

U.S. 8,084,522 B2
BASF SE has been granted a cationic photocurable composition comprised of at least one cationically polymerizable compound, at least one onium salt photoinitiator, at least one moisture scavenger, and at least one stabilizer selected from the group consisting of sterically hindered nitroxyl stabilizers, sterically hindered phenolic antioxidants, organic phosphorous stabilizers and mixtures thereof; wherein the moisture scavenger is an activated substantially water free zeolite or triethylorthoformate, wherein the weight ratio of the moisture scavenger to the stabilizer is from 100-0.1 to 100-10.