High molecular weight poly spandex from (tetramethylene - - co-ethylene ether) glycol

摘要

The present invention is poly having a number average molecular weight higher about 4000 daltons to about 1900 to provide a polyurethane urea composition comprising (tetramethylene - ethylene ether - co) glycol. In addition, the present invention is a high number average molecular weight of the poly as a soft segment-based material in spandex composition on the use of (tetramethylene - ethylene ether - co) glycol. The present invention has about 4000 daltons to about 1900 poly Such high number average molecular weight in the novel polyurethane composition comprising (tetramethylene - - co-ethylene ether) glycol, and their use in spandex.