Patent ID: 7531595

Claim:
A pressure-sensitive adhesive comprising: a) a polymer component comprising: i) 90 to 99 parts by weight of monomer units of an (meth)acrylic acid ester of non-tertiary alcohol, said alcohol having from 1 to 14 carbon atoms; ii) 1 to 10 parts by weight of monomer units of an acid functional monomer; iii) 0 to 10 parts by weight of monomer units of a second polar monomer; iv) 0 to 5 parts vinyl monomer units; and v) 0 to 1 part crosslinking agent; and b) 1 to 8 parts by weight, based on 100 parts of polymer, of silica nanoparticles having an average particle diameter of 9-25 nm with a length of 40-300 nm.