Reactive azo dyes having a permanent quaternary ammonium group and a fiber-reactive group
US5932708A · kind A · utility
1Cited by
6References
12Claims
0Family size
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Key dates
| Filing date | May 1, 1998 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | May 1, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B69/001
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Fiber-reactive monoazo and disazo dyes, suitable for dyeing cellulose material, such as cotton, and also synthetic or natural polyamide material, such as wool, in high color depth and with good fastness properties, are described which contain a quaternary ammonium group, such as a trialkylammonium group, and contain, as a fiber-reactive group, a group of the vinyl-sulfone series, or a grouping containing a group of the vinyl-sulfone series, or a heterocyclic fiber-reactive group selected from a halogeno-substituted pyrimidine or triazine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.