1:2 Chromium unsymmetrical complexes of azo and disazo dyes
US4314937A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1980 |
| Grant date | Feb 9, 1982 |
| Priority date | — |
| Expiry date | Mar 7, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P1/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Chromium complex dyes of the formula ##STR1## wherein represents a halogen atom, a C.sub.1 -C.sub.5 -alkyl group, a C.sub.1 -C.sub.2 -alkoxy group, a nitro group, a C.sub.2 -C.sub.3 -alkanoylamino or C.sub.2 -C.sub.3 -alkoxycarbonylamino group, PA1 Me.sym. represents a cation, and PA1 Ar represents the radical of an aromatic or heterocyclic diazo component which carries one to three SO.sub.3 H and/or COOH groups, preferably one to three SO.sub.3 H groups or one SO.sub.3 H and one COOH group, and is optionally further substituted by halogen, C.sub.1 -C.sub.5 -alkyl, C.sub.1 -C.sub.2 -alkoxy or nitro. These dyes are suitable for dyeing and printing nitrogen-containing material such as wool, silk, synthetic polyamide and especially leather.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.