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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.: i) Polymeric Glycol; ii).DiIsocyanate Compn Contg > One.OrthoAlkyl-MDI Select Formula I ##.STR2## (> 20%), iii) Chain Extender.Compn.: Bulky Diamine Selected:.2,2-DiMe 1.3-PentaneDiamine Etc.(> 80%). Polyurethaneurea is.Amide Soluble. Claims 2,3:.OrthoAlkyl-MDI is Selected:.Bis(3,5-Di-R-4-IsocyanatoPh)Methane.R=Me,Et resp. Claim 4 PolyEther Gly.col. Claim 7: (i) Poly(THF)Glycol,.THF-3-Me-THF CoPolymer Glycol..(ii) OrthoAlkyl-MDI Selected:.Bis(3,5-Di-R-4-IsocyanatoPh)Methane., R=Me,Et. & (iv) Chain Extender.Compn. 2,2-DiMe-1,3-DiAminoPentane.(> 90%). Claims 9,10: Spandex.PolyUrethaneUrea Cl. 1,7 resp..Patent Assignee
Code:	66506
Product:	USA. D
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