Composition comprising the addition product of a vinyl-sulfone dye and a secondary amine and process for dyeing a polyamide therewith
US4762524A · kind A · utility
18Cited by
1References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1987 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Feb 5, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/924
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention is directed to a dyestuff composition comprising the reaction product of a water-soluble, vinyl-sulfone type, reactive dye and a N-alkyl-amino-alkyl sulfonic acid and/or carboxylic acid or the salts thereof wherein the N-alkyl-amino-alkyl acid or salt is reacted with said dye in an amount of about 0.5 to 1.0 mole per mole of dye. This dyestuff composition is used to dye synthetic polyamides according to a process where said composition is applied to a polyamide fiber from an aqueous solution having a pH from about 3 to about 4; preferably 3.5 and then fixed to said fiber by heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.