Main > TEXTILES > Fibers > Elastomer Fiber. > Spandex/Elastane PolyUrethane Fiber > Co.: USA. I (Producer/Patents) > Patent > Claims Etc > Claim 1 Spandex PolyUrethaneUrea > (A) CoPoly(Alkylene Ether) Glycol > Select: > Poly(Tetramethylene-Co-Ethylene Eth > er)Glycols, WHEREIN > Ethylene Ether Moiety (15-37%). (B > ) DiIsocyanate & (C) Chain Extender > Select: DiAmine. Claim 2

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1-Isocyanato4[(4-Isocyanato-Ph)

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