Copper-complex formazan compounds having a fiber-reactive group of the vinylsulfone series, suitable as dyestuffs
US5028700A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1989 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Dec 20, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/5036
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Copper complex formazan compounds of the general formula (1) ##STR1## in which A and B both independently of one another denote a benzene or naphthalene ring, both of which can be substituted by substitutents customary in fiber-reactive dyestuffs, these substituents being, in particular, the groups Z which confer water-solubility and fiber-reactive groups --SO.sub.2 --Y shown in formula (1); PA1 Z is a group which confers water-solubility, such as a carboxy of sulfo group, and can be bonded to A, B and R; PA1 m is the number 1, 2, 3 or 4; PA1 R is an aryl radical, for example phenyl or naphthyl, which can be substituted by one or two groups Z of the above meaning and/or by halogen, lower alkyl and/or lower alkoxy, or is a lower alkyl radical, which can be substituted by halogen, sulfo and/or carboxy; PA1 the group --SO.sub.2 --Y can be bonded to A and B; PA1 n is the number 1 or 2; PA1 Y is vinyl or an ethyl group, which is substituted in the .beta.-position by a substituent which can be eliminated by alkali; PA1 X is an oxygen atom or a carbonyloxy or sulfo group; PA1 M is hydrogen or a salt-forming metal, such as an alkali metal. The copper complex formazan compounds of the formu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.