Patent ID: 6245876
Filing Date: 2001-06-12
Classification: C08J,D01F

Abstract:
A polyurethaneurea continuous shaped article having a birefringence index (.DELTA.n) of from at least 1.0.times.10.sup.-4 to 8.0.times.10.sup.-4 in a nontensile state, a crosslinking point density at an elongation of 100% (N100) of at least 5.0.times.10.sup.26 /m.sup.3, a crosslinking point density at an elongation of 400% (N400) of from 4.0.times.10.sup.26 to 3.0.times.10.sup.27 /m.sup.3, and a crosslinking density at the time of break (Nt) of at least 1.6.times.10.sup.27 /m.sup.3, wherein the ratio of the crosslinking density at an elongation of 400% to that at an elongation of 100% (N400/N100) is from 0.9 to 1.3.