Reactive colorants, production and use thereof
US6518408B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2001 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Mar 19, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0057
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of formula (1) whereinK1 and K2 are each independently of the other the radical of a coupling component from the series benzene, naphthalene, 4-alkyl-6-hydroxypyridone-(2), 2,5-diamino-4-alkylpyridine, 1-arylpyrazolone-(5) and 1-aryl-5-aminopyrazole, at least one of which contains a fiber-reactive group, with the proviso that(i) the fiber-reactive group is not 2-(&bgr;-sulfatoethylsulfonyl)ethylamino when K1 and K2 are phenyl substituted by a fiber-reactive group, and(ii) the fiber-reactive group is not &bgr;-sulfatoethylsulfonyl when K1 and K2 are N-(&bgr;-sulfatoethyl)aniline substituted on the phenyl ring by a fiber-reactive group, are suitable for dyeing a wide variety of fiber materials, especially cellulosic fiber materials, and yield dyeings having good allround properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.