Quaternary ammonium compounds and their use as dyeing assistants for polyamide fibers
US4441884A · kind A · utility
9Cited by
10References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1978 |
| Grant date | Apr 10, 1984 |
| Priority date | — |
| Expiry date | Nov 9, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/924
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
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); PA1 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.