Patent ID: 7442438

Claim:
An adhesive composition comprising an adhesive blend of: a first hydrophilic pressure sensitive adhesive comprising a polymerization product of: (a) 15 to 85 parts by weight of a first (meth)acrylate ester monomer wherein the (meth)acrylate ester monomer, when polymerized, has a glass transition temperature (T g ) of less than about 10 degrees Celsius; (b) 85 to 15 parts by weight of a first hydrophilic acidic comonomer; and (c) at least 10 parts based on 100 parts of the sum of components (a)+(b) of a plasticizing agent comprising polyethylene propylene glycol butyl ether; a second pressure sensitive adhesive comprising a polymerization product of: (a) 75 to 99 parts by weight of a second (meth)acrylate ester monomer; and (b) 25 to 1 parts by weight of a second hydrophilic acidic comonomer; wherein, the second pressure sensitive adhesive is miscible in the first hydrophilic pressure sensitive adhesive; and a tackifying agent.