Main > TEXTILES > Fibers > Elastomer Fiber. > Spandex/Elastane PolyUrethane Fiber > Co.: Japan. D (Patents) > Patent > Claims Etc > Claim 1 PolyUrethane CoPolymer of: > (i) PolyEster PolyOl Compn. (X): > CoPolymer of PolyOl (Al) having > UV Absorbing Group &/or > Lactone-Modified PolyOl (A2), > Optionally > 1 PolyOl Comp. (A3), & > Adipic Acid; & (ii) > Organic DiIsocyanate (Y). Claims > 3,4 Epsilon-CaproLactone. Claim 5

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3,4 Epsilon-CaproLactone. Claim 5's subsections
PolyEster DiOl MW=500-5,000.

3,4 Epsilon-CaproLactone. Claim 5's products
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