Water-soluble naphyhyl-azo-pyrazolone fiber reactive dyestuffs
US4046754A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1975 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Oct 17, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/51
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A water-soluble monoazo dyestuff having in form of the free acid the formula ##STR1## WHEREIN A represents the radical of a coupling component of the pyrazolone series, X represents the grouping --CH.dbd.CH.sub.2 or --CH.sub.2 --CH.sub.2 --Z, in which Z stands for a hydroxy group or an inorganic or organic radical capable of being split off by an alkaline agent, and m and n each represent the integer 1 or 2, said dyestuffs being highly suitable for the dyeing or printing of leather or textile materials consisting of wool, silk, polyamides, native or regenerated cellulose and yielding on cellulose fibrous materials in the presence of alkaline agents bright dyeings or prints of good to very good fastness to light and wet processing and of good resistance to alkaline agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.