Fibre-reactive formazan dyes containing .beta.-halogenethyl or vinylsulfonyl-alkanoylamino fiber-reactive groups
US5023274A · kind A · utility
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7References
6Claims
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Key dates
| Filing date | Apr 25, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Apr 25, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0041
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The fibre-reactive formazan dyes of the formula ##STR1## where X is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, cyano or nitro, Y is .beta.-haloethyl or vinyl, m is 1, 2 or 3, n is 3 or 4, p is 0, 1 or 2 and q is 0 or 1, produce dyeings having good fastness properties on nitrogen-containing or hydroxyl-containing fibre materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.