Fibre reactive scarlet azo dyes
US6946549B2 · kind B2 · utility
2Cited by
2References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 2002 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Jul 21, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/043
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention refers to dyestoffs of the formula I wherein Ar is a group of the formula II or of the formula III, D is a group of the formula IV, or of the formula V wherein the variables are defined as given in claim 1, processes for their preparation and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.