Patent ID: 9670391
Date: 2017-06-06
CPC Classifications: C08G,C09J,Y10T

Claim:
1. A moisture-curable polyurethane hot-melt resin composition comprising a urethane prepolymer having an isocyanate group, the urethane prepolymer being a reaction product of a polyol (A) and a polyisocyanate (B) only, wherein the polyol (A) contains a polypropylene glycol and/or polytetramethylene glycol (A-1), a crystalline polyester polyol (A-2), an amorphous polyester polyol (A-3), and an acrylic polyol (A-4), wherein: the amorphous polyester polyol (A-3) is produced through a reaction of an alkylene oxide adduct of bisphenol A with a polybasic acid, and a glass transition temperature of the amorphous polyester polyol (A-3) is in a range of −70° C. to −10° C., wherein the polyester polyol (A-2) is 20 to 400 parts by mass, the amorphous polyester polyol (A-3) is 10 to 300 parts by mass and the acrylic polyol (A-4) is 20 to 400 parts by mass relative to 100 parts by mass of the propylene glycol and/or polytetramethylene glycol (A-1).