Patent ID: 7371460
Filing Date: 2008-05-13
Classification: C08G,C09J,Y10S,Y10T

Abstract:
1. A highly adhesive pressure sensitive adhesive composition comprising at least: (A) a hydroxyl-group-containing acrylic polymer as a base polymer, in which the content of the hydroxyl-group-containing copolymerizable monomer is equal to or greater than 0.01 mole % and less than 20 mole % based on the total amount of monomer components; (B) an amine compound containing plural hydroxyl groups as a curing aid, said amine compound being represented by formula (1)  wherein: R X is a divalent hydrocarbon group; and p is an integer of equal to or more than 1; and (C) a polyisocyanate compound as a curing agent, wherein a dried or cured product of the composition has a gel fraction of equal to or more than 10% by weight and less than 70% by weight, wherein the composition satisfies the following conditions: (i) M (ii) M in which conditions M A , M B and M C are molar values, with: M A being the content of hydroxyl groups derived from the hydroxyl-group-containing acrylic polymer (A); M B being the content of hydroxyl groups derived from the amine compound (B) containing plural hydroxyl groups; and M C being the content of isocyanate groups derived from the polyisocyanate compound (C).