| abstract |
[PROBLEMS] To provide a sufficient adhesive force to adherends having low polarity such as adherends made of polyolefins such as polyethylene and polypropylene, which have been difficult to adhere conventionally, and glass, stainless steel, A hot-melt pressure-sensitive adhesive composition that exhibits an appropriate adhesive force to other adherends such as acrylic and can be smoothly peeled off without contaminating the adherend, and the hot-melt pressure-sensitive adhesive Providing an adhesive tape and an adhesive film using the composition. At least one polymer block (P) comprising an aromatic vinyl compound unit and at least one conjugated diene compound unit in which at least a part of a carbon-carbon unsaturated double bond may be hydrogenated. An aromatic vinyl-conjugated diene block copolymer (I) having a number average molecular weight of 20,000 to 500,000 having at least one polymer block (Q), and at least one comprising a methacrylate unit. A hot-melt pressure-sensitive adhesive composition containing an acrylic block copolymer (II) having a polymer block (A) and an at least one polymer block (B) comprising an acrylate unit, The mass ratio of the aromatic vinyl-conjugated diene block copolymer (I): acrylic block copolymer (II) is 99: 1 to 41:59. Hot-melt pressure-sensitive adhesive composition. [Selection figure] None |