Bunte salt azo dye compound
US6515114B1 · kind B1 · utility
2Cited by
10References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2002 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jun 10, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a Bunte salt azo dye composition comprising an azo dye containing at least one Bunte salt group. The resulting dye is water soluble material which is useful in the rapid dying of natural and synthetic fibers. The Bunte salt azo dye of the present invention can be used without requiring a mordanting step or a concurrent or pre-reducing step to condition fibers of animal hair to accept the dye to achieve strong color performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.