Patent ID: 7297400
Filing Date: 2007-11-20
Classification: C08F,C08G,C08L,C09J,Y10S,Y10T

Abstract:
1. An optical construction comprising an optical film having a major surface; an adhesive applied to at least a portion of said major surface, wherein said adhesive comprises an acrylate copolymer; wherein said mono-acrylate oligomer is present in an amount greater than the amount of said multi-acrylate oligomer, and wherein said mono-acrylate oligomer, multi-acrylate oligomer and photoinitiator, when blended with said acrylate copolymer, forms a pressure sensitive adhesive, and when cured, forms a cured adhesive comprising at least a semi-interpenetrating polymer network having an average molecular weight between crosslinks (M a substrate bonded to said optical film, having said adhesive cured therebetween.