Patent ID: 6255431
Filing Date: 2001-07-03
Classification: C08G,C08L

Abstract:
A spandex fiber comprising the reaction product of:(A) a polyisocyanate;(B) a polyol composition comprising:(1) a polyoxytetramethylene ether glycol; and(2) a trifunctional active hydrogen compound-initiated polyoxyalkylene polyether polyol having a degree of unsaturation of from 0.04 milliequivalents per gram to 0.02 milliequivalents per gram of said polyether polyol, said polyoxyalkylene polyether polyol capped with oxyalkylene groups derived from ethylene oxide in an amount of from 4 to 30 weight percent based on the weight of all oxyalkylene groups; and(C) optionally, an active hydrogen chain extender.