Patent ID: 6887917

Claim:
An adhesive composition comprising: an acrylate copolymer; a mono-acrylate oligomer; a multi-acrylate oligomer having 2 to 5 acrylate functionalities; and a photoinitiator that initiates free radical polymerization; 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 c ) greater than about 3000, said cured adhesive having a peel strength greater than about 40 N/dm.