Patent ID: 8148442
Filing Date: 2012-04-03
Classification: C08L,C09J,C09K,G02B,G02F,Y10T

Abstract:
1. A pressure sensitive adhesive for polarizing plates which has a storage elastic modulus (G′) at 23° C. of at least 0.3 MPa, comprising a tacky adhesive material that comprises (A) an acrylic copolymer and (B) an active energy beam-curable compound, said tacky adhesive material having been irradiated with an active energy beam, wherein: (B) is a multi-functional (meth)acrylate having a molecular weight of less than 1,000, said acrylic copolymer further comprises 0.01 to 10% by mass of a monomer bearing a crosslinkable functional group, the ratio by mass of component (A) to component (B) is 100:1 to 100:40, the tacky adhesive material further comprises a crosslinking agent (C) and a silane coupling agent (D), and said pressure sensitive adhesive has an adhesive strength for polycarbonate of at least 5 N/25 mm.