| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive which is excellent in peeling touch, cold resistance, gloss degree restorability and repeating adhesion and is also excellent in elasticity. SOLUTION: This pressure-sensitive adhesive comprising (A) an acrylic polymer produced from a 4 to 12C alkyl acrylate in an amount of >=50 wt.% based on the total amount of the monomers for the polymer forming the pressure- sensitive adhesive and an active hydrogen-containing copolymerizable monomer having an active hydrogen atom in an amount of 0.01 to 20 wt.% as the polymer component of the main agent and (B) a polyisocyanate which is the reaction product of an aliphatic and/or an alicyclic diisocyanate with a polyhydric hydroxy compound having the hydroxy group-average functional group number of >=4 and a number-average mol.wt. of 300 to 5,000 as a curing agent component. In (B) the polyisocyanate, the average functional group number of the isocyanate groups in the molecule is 4 to 20. The rate of (B) the polyisocyanate is 0.2 to 20 pts.wt. per 100 pts.wt. of (A) the acrylic copolymer.
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