Main > TEXTILES > Fibers > Elastomer Fiber. > Spandex/Elastane PolyUrethane Fiber > Co.: USA. I (Producer/Patents) > Patent > Claims Etc > Claim 1 PolyUrethaneUrea Polymer: > Prodt. of PolyEther Glycol Selected > HomoPolymer of THF & CoPolymer > of THF & 3-Me-THF Monomers; > 1,1-MethyleneBis(4-IsocyanatoBenzen > e) & Diamine Chain Extender, > WHEREIN > 1 DiAmine is > 2-Methyl-1,5-PentaneDiamine (> 50% > when Glycol=Poly(THF) & >55% > when Glycol=THF-3-Me-THF CoPol.) > Claim 2 CoPol. Contg 3-Me-THF

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Claim 2 CoPol. Contg 3-Me-THF's subsections
(4-20%). Claim 3 CoPol. MW=3000-

Claim 2 CoPol. Contg 3-Me-THF's products
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