Bicyclic formazan compounds containing a beta-sulfatoethyl-sulfonyl or vinyl sulfonyl group, suitable as fiber reactive dyestuffs
US4757135A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1986 |
| Grant date | Jul 12, 1988 |
| Priority date | — |
| Expiry date | Oct 2, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/5036
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Water-soluble copper formazan compounds of the general formula ##STR1## in which: Y is vinyl or ethyl which is substituted by a substituent eliminatable under alkaline conditions; the benzene nucleus A can be substituted by further substituents; PA1 M is hydrogen or a metal; PA1 B is substituted or unsubstituted phenylene or naphthylene; PA1 Z.sup.1 is hydrogen or a water-solubilizing group, or --B--Z.sup.1 together denote hydrogen, carboxy, cyano or nitro; PA1 D is a substituted or unsubstituted benzene or naphthalene radical; and PA1 R is hydrogen or a group of the formula ##STR2## in which R* is hydrogen or a substituted or unsubstituted lower alkyl, n denotes the number zero or 1, and Y.sup.2 is defined in the same manner as Y. These copper formazan compounds possess fiber-reactive dye properties and dye particular cellulose fiber materials in deep reddish blue to greenish blue fast shades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.