| 摘要 |
The invention provides a pressure-sensitive adhesive composition including: an acrylic copolymer (A) containing 40% to 80% by mass of a constituent unit derived from a (meth)acrylic acid alkyl ester having a C1-5 alkyl group, 10% to 59.9% by mass of a constituent unit derived from a (meth)acrylic acid alkyl ester having a C6-18 alkyl group, and 0.1% to 10% by mass of a constituent unit derived from a monomer having a hydroxyl group; a polyoxyalkylene group-containing copolymer (B) having a weight average molecular weight of 3,000 to 100,000 and containing 60% by mass or less of a constituent unit derived from a polyoxyalkylene group-containing monomer having an average addition mole number of alkylene oxide units of 20 or more; an alkali metal salt (C); and a dimethylpolysiloxane compound (D) having a polyoxyalkylene group in a molecule and having an HLB value of 9 or less. |
