Patent ID: 6066396
Filing Date: 2000-05-23
Classification: D01F,Y10T

Abstract:
A polyvinyl-alcohol-based flame retardant fiber comprising a vinyl-alcohol-based polymer (1) having a polymerization degree of 1000 or more and a saponification degree of 98 mole % or more, and a halogen-containing vinyl polymer (2),the fiber being a sea and island fiber wherein the vinyl-alcohol-based alcohol (1) is a sea component, and the halogen-containing vinyl polymer (2) is an island component, the size of the island of the halogen-containing vinyl polymer (2) in a cross section of the fiber being from 0.1 to 3 .mu.m, andthe crystallinity degree of the vinyl-alcohol-based polymer (1) being from 65 to 85%.