Patent ID: 8124685

Claim:
An adhesive composition comprising a polymer obtained by copolymerizing a monomer composition containing a (meth)acrylic acid ester, a monomer having a maleimide group, and styrene, the (meth)acrylic acid ester having a structure represented by Formula (1): wherein R 1 is a hydrogen atom or a methyl group, and R 2 is a C4 to C20 alkyl group, the (meth)acrylic acid ester being contained in the monomer composition in an amount of 10 to 40 parts by mass based on 100 parts by mass of the monomer composition, the monomer having the maleimide group being contained in the monomer composition in an amount of 1 to 50 parts by mass based on 100 parts by mass of the monomer composition, and the styrene being contained in the monomer composition in an amount of 1 to 70 parts by mass based on 100 parts by mass of the monomer composition.