Patent ID: 6312805
Filing Date: 2001-11-06
Classification: C07C,C08G,D01F,Y10T

Abstract:
A cationic dyeability modifier for incorporation into polyesters and polyamides to increase their affinity for basic dyes, said cationic dyeability modifier having the following formula:R.sub.1 OOC--(CH.sub.2).sub.n --CH(CH.sub.2 CH.sub.2 SO.sub.3 X)--(CH.sub.2).sub.m --COOR.sub.2where n is an integer from 1 to 10, m is an integer from 1 to 10, X is an alkali metal selected from the group consisting of lithium, sodium and potassium, and R.sup.1 and R.sub.2 are independently hydrogen or alkyl groups having one to four carbon atoms.