SPANDEX FROM POLY (TETRAMETHYLENE-CO-ETHYLENEETHER) GLYCOLS BLENDED WITH POLYMERIC GLYCOLS

摘要

A kind of polyurethaneurea compositions include the reaction product of at least one diisocyanate, the glycol of polymerization, poly- (tetramethylene-copolymerization-ethyleneether) glycol include the Component units derived from combined polymerization tetrahydrofuran and ethylene oxide, wherein part (EO) Component units are present at least one diamine chain extender of from greater than about 37 to about 70 moles of % of poly- (tetramethylene-copolymerization-ethyleneether) glycol, and at least one chain terminating agent derived from ethylene oxide. The invention further relates to use mixture polymer diol and poly- (tetramethylene-copolymerization-ethyleneether) glycol as soft segment base Spandex composition. The present invention also relates to new urethane compositions, and it includes polymer diol and poly- (tetramethylene-copolymerization-ethyleneether) glycol and its purposes in elastic fibers.