Patent ID: 8343632

Claim:
A laminate having a substrate and a cured release coating on said substrate, wherein said substrate is a polyester film and wherein said cured release coating is the cured product of a release coating composition comprising: (A) an additive for anchorage of a release coating, said additive being a compound of the general formula: (R a SiO( 4−a )/ 2 ) n where n is an integer greater than 3, a ranges from about 1 to about 3, R is independently selected from the group consisting of: oxirane containing radicals having from one to forty carbon atoms, epoxide containing radicals having from one to forty carbon atoms, carboxylic acid anhydride containing radicals having from one to forty carbon atoms, monovalent hydrocarbon radicals, monovalent hydrocarbonoxy radicals, and hydride atoms, wherein at least one of said oxirane or epoxide or carboxylic acid anhydride containing radicals are present per molecule, and wherein at least one of said hydride atoms are present per molecule; (B) a curable alkenyl silicone having the formula M Vi a T b D c M d where M Vi =R 1 3−p R 2 p SiO 1/2 , where R 1 is selected from the group consisting of trifluoropropyl and one to forty carbon monovalent hydrocarbon radicals and R 2 is selected from the group consisting of two to forty carbon atom terminal olefinic monovalent hydrocarbon radicals, where p ranges from 1 to 3; T=R 3 SiO 3/2 where R 3 is selected from the group consisting of R 1 and R 2 ; D=R 4 R 5 SiO 2/2 where R 4 and R 5 are each independently selected from the group consisting of R 1 and R 2 ; and M=R 1 3 SiO 1/2 where each R 1 is as previously defined and is independently selected; wherein a and b have values ranging from 2 to 5, c is an integer ranging from about 50 to about 1,000 and d has a value ranging from 2 to about 0.5; (C) a hydrogen siloxane selected from the group of compounds; MD e D′ f M, MD′ f M, MD e D′ f M′, M′D e D′ f M, and M′D e M′, where M=R′ 3 SiO 1/2 , M′=H g R′ 3−g SiO 1/2 , and D=R′R′SiO 2/2 , and D′=R′HSiO 2/2 wherein each R′ in M, M′, D, and D′ is independently selected from the group consisting of trifluoropropyl and one to forty carbon monovalent hydrocarbon radicals wherein the subscripts e and f may be zero or positive whereby the sum of e and f ranges from about 10 to about 100 subject to the limitation that the sum of f and g is two or greater; (D) a hydrosilylation catalyst; and (E) an inhibitor.