Patent ID: 8394501

Claim:
A polyurethane resin composition comprising an active hydrogen compound (A) formed by adding m-xylylene diisocyanate and/or hexamethylene diisocyanate to a compound (C) at a reaction equivalent ratio of [the number of isocyanate groups]/[the number of hydroxyl groups] of 0.80 to 0.10; and an organic polyisocyanate compound (B) formed by adding a compound (D) to m-xylylene diisocyanate and/or hexamethylene diisocyanate at a reaction equivalent ratio of [the number of isocyanate groups]/[the number of hydroxyl groups] of 2 to 10, wherein the compound (C) is at least one compound selected from among ethylene glycol, 1,3-propanediol, propylene glycol, diethylene glycol, dipropylene glycol, m-xylylene glycol, trimethylolpropane, glycerin, an ethylene oxide adduct of aniline, a propylene oxide adduct of aniline, an ethylene oxide adduct of m-xylylenediamine, and a propylene oxide adduct of m-xylylenediamine; and the compound (D) is at least one compound selected from among ethylene glycol, 1,3-propanediol, propylene glycol, diethylene glycol, dipropylene glycol, m-xylylene glycol, trimethylolpropane, glycerin, an ethylene oxide adduct of aniline, a propylene oxide adduct of aniline, an ethylene oxide adduct of m-xylylenediamine, and a propylene oxide adduct of m-xylylenediamine; and the ratio of the total hydroxyl groups originating from a compound(s) having three or more hydroxyl functionalities to the total hydroxyl groups of the compound (C) is 5% or more and less than 70%.