| 摘要 |
PROBLEM TO BE SOLVED: To provide an adhesive composition excellent in adhesive strength, holding power at high temperatures and thermal stability.SOLUTION: There is provided an adhesive composition which comprises: 100 pts.wt. of a (meth)acrylate-based block copolymer having a structure represented by following general formula (1), -[a]-[b]-[a]- (1) (where, [a] is a methylmethacrylate polymer block; [b] is an alkyl(meth)acrylate polymer block having an alkyl group having 2 to 12 carbon atoms which has a glass transition point of -80 to -30°C) in a main chain of the polymer; 50 to 135 pts.wt. of a tackifier resin which contains a rosin-based tackifier resin (I) and a styrene-based tackifier resin (II) and in which the weight ratio [(I)/(II)] between the rosin-based tackifier resin (I) and a styrene-based tackifier resin (II) is 0.5 to 4; and 40 to 90 pts.wt. of a plasticizer. |
