Patent ID: 6734273
Filing Date: 2004-05-11
Classification: C08G,Y10T

Abstract:
A thermoplastic polyurethane comprising the reaction product of:a polyol component including a randomly polymerized polyether polyol having at least 75 percent by weight of propylene oxide repeat units and having a high secondary hydroxyl group content of about 51 to about 100 percent based on the total number of hydroxyl group present in said high secondary polyether polyols, and wherein the number average molecular weight of said polyol component is from about 800 to about 1,500, and wherein said polyol component has a hydroxyl functionality of from about 1.8 to about 2.2; a polyisocyanate; a chain extender; and a polyurethane catalyst, and wherein said thermoplastic polyurethane has a molecular weight of from about 75,000 to about 400,000 weight average.