Patent ID: 6794446
Filing Date: 2004-09-21
Classification: C08G,C08L,D04H,D06N

Abstract:
A water-borne urethane resin composition for forming a microporous layer, comprising (1) a water-borne urethane resin having a heat-sensitive coagulation temperature of 40 to 90Â° C. and (2) an associative type thickener,wherein said water-borne urethane resin (1) comprises (A) a polyoxyalkylene glycol comprising at least 50% by weight or more of a repeating unit of ethylene oxide and/or (B) a polyoxyalkylene glycol monoalkylether, a polvoxvalkylene glycol component of said polvoxyalkylene glycol monoalkylether comprising at least 50% by weight or more of a repeating unit of ethylene oxide, and said associative type thickener (2) has a hydrophobic group located at at least one terminal and also has a urethane bond in its molecular chain.