Quaternary ammonium compounds and their use as dyeing assistants for polyamide fibers
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United States of America Patent
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Apr 10, 1984
Issued Date -
N/A
app pub date -
Nov 9, 1978
filing date -
Dec 7, 1976
priority date (Note) -
Expired
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Abstract
The present invention relates to a process for treating a polyamide textile substrate to increase the affinity thereof for anionic dyes or to reserve the same against cationic dyes comprising applying thereto, in a weakly alkaline medium, a compound of formula I, ##STR1## wherein R is phenyl; naphthyl; (C.sub.5-6)cycloalkyl; or phenyl or naphthyl substituted by a total of up to 3 substituents selected from the group consisting of (C.sub.1-4)alkyl, chlorine and bromine (maximum of two of each of these); each of R.sub.1 and R.sub.2, independently, is (C.sub.1-4)alkyl, and X.sup..crclbar. is a non-chromophoric anion.
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