Patent ID: 7534659
Filing Date: 2009-05-19
Classification: C08L,C09J,H01L

Abstract:
1. A silicone-based adhesive sheet comprising a first layer and a second layer disposed adjacent to and in contact with said first layer; wherein said first layer comprises (I) a hydrosilylation-curable silicone composition comprising (II) a slower curing hydrosilylation-curable silicone composition different than said hydrosilylation-curable silicone composition (I) of said first layer, said slower curing hydrosilylation-curable silicone composition (II) comprising wherein at least one of said hydrosilylation-curable silicone compositions (I) and (II) further comprises (F) a curing inhibitor; and wherein said slower curing hydrosilylation-curable silicone composition (II) of said second layer has a curing time at least five times greater than said hydrosilylation-curable silicone composition (I) of said first layer based on the 90% vulcanizing times of said first and second layers at 130° C. as specified by JIS K 6300.