Spandex compositons for high speed spinning

D - Textiles – Paper – 01 – F

Patent

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D01F 6/70 (2006.01) C08G 18/10 (2006.01) C08G 18/48 (2006.01)

Patent

CA 2606283

A spandex comprising a polyurethane or polyurethaneurea reaction product of at least one diisocyanate compound and a poly(tetramethylene-co-ethyleneether) glycol comprising constituent units derived by copolymerizing tetrahydrofuran and ethylene oxide wherein the percentage of ethylene ether moieties is from about 16 to about 70 mole percent with at least one chain extender selected from the group consisting of diamines and diols and at least one chain terminator wherein the spandex is spun at a speed in excess of about 750 meters per minute.

Un spandex comprenant un produit réactionnel de polyuréthanne ou de polyuréthanneurée d'au moins un composé de diisocyanate et un glycol polytétraméthylène éthyléther comprenant des unités constitutives dévirées par copolymération de tétrahydrofurane et d'oxyde d'éthylène, dont le pourcentage de fractions d'éther éthylène est compris entre environ 16 et environ 70 mole en pourcent avec au moins un extenseur de chaîne sélectionné dans le groupe constitué de diamines et de diols et d'au moins une terminaison de chaîne, le spandex étant filé à une vitesse excessive d'environ 750 mètres par minute.

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