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Section:	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.(4-20%). Claim 3 CoPol. MW=3000-.4000. Claim 4 2-Me-1,5-PentaneDi.Amine (> 80% of Chain Extender) &.Bal.: Ethylenediamine. Claim 5.3-Me-THF pres. in CoPol. (10-15%) &.Chain Extender is 2-Me-1,5-Pentane.Diamine. Patent Assignee
Code:	66488
Product:	USA. D
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