Polyurethane, elastic polyurethane fiber and polyesterpolycarbon

Details Polyurethane, elastic polyurethane fiber and polyesterpolycarbon Polyurethane, elastic polyurethane fiber and polyesterpolycarbon

1991-03-08

1994-03-01

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 83, 528 84, 428902, C08G 1842, C08G 1844

Patent

active

052909050

ABSTRACT:
The present invention is directed to an elastic polyurethane obtained by copolymerization of a polymer diol of a polyesterpolycarbonate diol utilizing a long-chain diol having methyl branches or a mixed diol of a polyester diol and a polycarbonate diol, with an organic diisocyanate and a chain extender. Elastic fibers obtained by spinning said polyurethane have low tensile stress at low tensile strain zone and high tensile stress at high tensile strain zone.

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