Patent ID: 6458866
Filing Date: 2002-10-01
Classification: C08G,D01F,Y10S

Abstract:
Elastomeric fibers prepared by1) melt spinning a polyurethane elastomer comprising structural units of: â€ƒwherein the grouping â€”O â€”R1 â€”Oâ€” is a macrodiol group having a molecular weight of 500 to 10000, X is an olefinically unsaturated moiety, Y is NH and each Y is on each side of X, R2 is a member selected from the group consisting of bivalaent aliphatics, cycloalipbatics, aliphatic-cycloaliphatic groups and mixture thereof, n is an integer from 1 to 10, m is an integer of at least 4, said olefinically unsaturated moiety X being derived from a diaminoalkene, diaminoalkyne, diaminocycloalkene or a mixture thereof, wherein the diaminoalkene is cis- or trans-1,4-diaminobut-2-ene, cis- or trans-4,4â€²-diaminostilbene, a diamino maleic acid dinitrile or a mixture thereof, the diaminoalkyne is 1,4-diaminobut-2-yne and the diaminocycloalkene is 3,6-diaminocyclohexene-(1), whereby fibers are obtained; and 2) exposing said fibers to high-energy radiation in order to cross-link the polyurethane elastomer at least partially.