Patent ID: 6441114
Filing Date: 2002-08-27
Classification: B32B,C09J,Y10T

Abstract:
A pressure sensitive adhesive comprising a copolymer comprising:at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having at least 4 carbons on average; at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester comprising an alkyl group having less than 4 carbons on average and which has a Tg of less than 50Â° C. as a homopolymer; and greater than 10 parts by weight, based on the total weight of monomers, of at least one copolymerized monoethylenically unsaturated monomer having a secondary or tertiary amide group of the formula â€”C(O)NR1R2 wherein R1 and R2 are each independently H or a saturated or unsaturated hydrocarbon moiety, which optionally forms a ring with the carbonyl carbon (â€”C(O)) of the amide group; wherein the pressure sensitive adhesive is removable, repositionable, or both within an initial period of about 24 hours and has a Tg of no greater than âˆ’15Â° C.