Patent ID: 9688805
Date: 2017-06-27
CPC Classifications: C08G,C08L,D01D,D01F,Y10T

Claim:
1. A melt-spun fiber made from a resin comprising the reaction product of (i) a hydroxyl terminated polyester intermediate derived from a dicarboxylic acid and a blend of at least two alkylene glycols wherein two of the alkylene glycols have a number average molecular weight that differs by at least 20 percent; (ii) a diisocyanate and (iii) a linear alkylene glycol chain extender; wherein the resin has a weight average molecular weight of at least 600,000; and wherein the resin is further reacted with: (iv) an agent comprising the reaction product of a polyalkylene ether glycol and a diisocyanate; wherein said fiber has a weight average molecular weight of at least 700,000.