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Section:	Main.TEXTILES.Fibers.Elastomer Fiber..Spandex/Elastane PolyUrethane Fiber.Co.: USA. I (Producer/Patents).Patent.Claims Etc.Claim 1 Spandex Heat-Set Efficiency.at 175-190C of .gtoreq.85% Reaction.Prodt.: (A) THF-3-Me-THF CoPol..Glycol, (B) Mixt. of.1-Isocyanato-4-[(4-IsocyanatoPh)Me].Benzene & 23-55% of 1-Isocyanato-2-.[(4-IsocyanatoPh)Me]Benzene. (C).Chain Extender. Claim 2.Unload Power=.gtoreq.0.020 dN/tex..Claims 3,4 (C) Select:.EthyleneDiamine, 1,4-ButaneDiamine.Etc. resp. Claim 6 Spandex Mfg.:.(1) (A)+(B)=Prodt. Contg 2.4-4.6%.NCO Moiety. (2) Add Solvent. (3).Add Chain Extender & (4) Spinning..Patent Assignee
Code:	66499
Product:	USA. D
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