Patent ID: 6150495
Filing Date: 2000-11-21
Classification: C08G,C08J,D01F,Y10T

Abstract:
A process for preparing superabsorbing polyamide fibers comprising:i) reacting about 1 to about 20% of the succinimide groups of a polysuccinimide (PSI) with one or more monoamines to form an internally plasticized poly(imide-co-amide) intermediate;ii) hydrolyzing about 60 to 90% of the succinimide groups of the poly(imide-co-amide) intermediate of i);iii) admixing crosslinker with the partially hydrolyzed poly(imide-co-amide) of ii) under non-crosslinking conditions to form a crosslinkable, uncrosslinked, partially hydrolyzed, internally plasticized PSI composition;iv) drawing fibers from the composition of iv); andv) subjecting the fibers to crosslinking conditions to crosslink a portion of uncrosslinked succinimide groups and form the superabsorbing polyamide fibers.