Asymmetrical 1:2-chromium complex azo dyestuffs
US4086223A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1977 |
| Grant date | Apr 25, 1978 |
| Priority date | — |
| Expiry date | Feb 9, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B45/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Asymmetrical 1:2-chromium complex dyestuffs having excellent fastness to light, rubbing, washing, alkali, milling sea water, decatizing and perspiration and having the formula ##STR1## WHEREIN A.sub.1 represents o-phenylene unsubstituted or substituted by halogen, nitro, lower alkyl, lower alkylsulphonyl, phenylsulphonyl, --SO.sub.3.sup.- M.sup.+ or ##STR2## wherein R.sub.1 represents hydrogen, lower alkyl and R.sub.2 represents hydrogen, lower alkyl or phenyl, or by a cellulosic fiber-reactive group, or o-naphthylene unsubstituted or substituted by --SO.sub.3.sup.- M.sup.+, PA1 A.sub.2 represents unsubstituted o-phenylene or o-naphthylene unsubstituted or substituted by hydroxyl or --SO.sub.3.sup.- M.sup.+, and PA1 A.sub.3 represents o-phenylene unsubstituted or substituted by halogen, nitro, lower alkyl, lower alkoxy, lower alkylsulphonyl, phenylsulphonyl, --SO.sub.3.sup.- M.sup.+ --or ##STR3## wherein R.sub.3 and R.sub.4 independently of each other represent hydrogen or lower alkyl, or o-naphthylene unsubstituted or substituted by nitro, --SO.sub.3.sup.- M.sup.+ or both PA1 B represents 1,2-naphthylene unsubstituted or substituted by halogen, phenylamino, --COO.sup.- M.sup.+, --…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.