Sulfo- or carboxy-aryl amino sulfonyl phenyl azo hydroxpyridine heavy metal complex dyes
US4193916A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1977 |
| Grant date | Mar 18, 1980 |
| Priority date | — |
| Expiry date | Sep 28, 1997 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A heavy metal complex of an azo compound of the formula ##STR1## in which A is a substituted or unsubstituted carboxy- or sulpho-phenyl radical or a carboxy- or sulpho- naphthyl radical, p is 1 or 2, R.sub.1 is hydrogen, chlorine, bromine, nitro, alkyl, alkoxy, aryloxy or acylamino, R.sub.2 is hydrogen or alkyl, R.sub.3 is hydroxyl or amino, R.sub.4 is hydrogen, chlorine, bromine, cyano, amino, amino substituted by 1 or 2 alkyl radicals, arylamino, morpholino, pyrrolidino, piperidino, mercapto, alkylthio, arylthio, sulpho or arylsulphonyl and R.sub.5 is hydrogen, chlorine or bromine and one of the radicals R.sub.1 and --SO.sub.2 --NR.sub.2 --A is bonded to the benzene ring in the 4-position and the other is bonded to the benzene ring in the 5-position or 6-position, and 1 or 2 molecules of the azo compound of the formula (1) are bonded to one atom of copper, nickel, chromium or cobalt; such dyes being suitable for dyeing and printing polyamide materials, such as wool, silk, leather and synthetic polyamides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.