Main > TEXTILES > Fibers > Elastomer Fiber. > Spandex/Elastane PolyUrethane Fiber > Co.: USA. I (Producer/Patents) > Patent > Claims Etc > Claim 1 PolyUrethaneUrea Polymer: > Prodt. of a) PolyEther Glycol Selec > t: HomoPolymer of THF & CoPolymer > of THF & 3-Me-THF, (b) 1,1-Methylen > eBis(4-IsocyanatoBenzene) & (c) > DiAmine Chain Extenders, WHEREIN > One DiAmine is 1,3-DiAminoPentane > (35-90%) & Bal.: EthyleneDiAmine. > Claim 2 Polymeric Glycol is > HomoPolyEther of THF. Claim 3 > Polymeric Glycol is CoPolyEther of > THF & 3-Me-THF (4-20%). Claim 5: > Spandex Spun from PolyUrethaneUrea > Polymer Cl. 1. Claim 6 PolyUrethane > Polymer: Prodt. of a) PolyEster > Glycol Selected: CoPolyEster of > Ethylene Glycol and Butylene Glycol > with Adipic Acid & PolyEster of > 2,2-DiMethyl-1,3-Propane DiOl & > 1,12-DodecaneDioic Acid; b) & c) > Idem. to Cl.1(b-c), b/a=1.5-3.7. > Claim 7: Spandex Spun from > PolyUrethaneUrea Polymer Cl. 6.
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