Patent ID: 7794822
Filing Date: 2010-09-14
Classification: B32B,C08K,H01G,Y10S,Y10T

Abstract:
1. A multilayer polyester film comprising a hydrolysis stabilizer, wherein the hydrolysis stabilizer is an epoxidized alkyl ester of fatty acid or is a mixture of epoxidized alkyl esters of fatty acid or is an epoxidized fatty acid glyceride or is a mixture of epoxidized fatty acid glycerides, said film further comprising at least one external layer and at least one of said external layers does not comprise the hydrolysis stabilizer, wherein the resulting film has an SV loss after autoclaving which is higher than said hydrolysis-stabilized film including said hydrolysis stabilizer within said external layer(s) up to a loss of 202 SV units after 96 hours at 110° C. in an autoclave with water saturation.