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.
THF-3-Me-THF CoPolymer Glycol.'s subsections
(ii) OrthoAlkyl-MDI Selected:
THF-3-Me-THF CoPolymer Glycol.'s products
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