Patent ID: 7750075

Claim:
An acrylic pressure sensitive adhesive composition comprising, a) 100 weight part of acrylic copolymer, wherein the acrylic copolymer is prepared by the polymerization of 90-99.9 weight part of (meth)acrylic acid ester monomer having C2-C8 alkyl and 0.1-10 weight part of vinyl and/or acrylic monomer having a functional group capable of crosslinking; b) 1.2-10.2 weight part of ester plasticizer having one or more ether linkages, represented by formula 1; c) 0.04-4.8 weight part of alkali metallic salt selected from a group consisting of LiClO 4 , NaClO 4 and their mixture; and d) 0.06-1.5 weight part of quaternary ammonium salt selected from a group consisting of tetrabutylammonium perchlorate, tetraethylammonium p-toluenesulfonate, tetrabutylammonium hexafluorophosphate and their mixtures; Wherein, each of R1 and R2 are C8 alkyl, R3 is H, and n is an integer of 4-10.