Patent ID: 7825189

Claim:
An adhesive composition for optical films, comprising the following components (A-1), (B) and (C): (A-1) an acrylic-based polymer obtained by copolymerizing at least the following monomer components (a1), (a2), (a3) and (a4) and having a weight-average molecular weight of 800,000 to 1,600,000 and a value (Mw/Mn), as obtained by dividing the weight-average molecular weight of the copolymer by the number-average molecular weight thereof, of 10 to 50, (a1) a (meth)acrylic acid alkyl ester and/or a (meth)acrylic acid alkoxyalkyl ester in an amount of 4.5 to 89% by weight, (a2) an aromatic ring-containing monomer in an amount of 10 to 85% by weight, (a3) a hydroxyl group-containing monomer in an amount of 0.5 to 10% by weight, and (a4) a carboxyl group- or amino group-containing monomer in an amount of 0.05 to 0.5% by weight, (B) an isocyanate-based crosslinking agent in an amount of 0.005 to 5 parts by weight based on 100 parts by weight of the acrylic-based polymer, and (C) a silane coupling agent in an amount of 0.05 to 1.0 part by weight based on 100 parts by weight of the acrylic-based polymer.