Alkoxy- and cyclohexyloxycarbonylaminophenyl-azo-hydroxynaphthalenes containing at least one sulfo group
US3981858A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1973 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Jan 15, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Azo dyes bearing at least one sulphonic acid group and of formula I, ##SPC1## in which PA1 R signifies an alkyl radical of 6 to 18 carbon atoms or a cyclohexyl radical, PA1 R.sub.1 signifies hydrogen, halogen, alkyl, or --SO.sub.3 H, PA1 R.sub.2 signifies hydrogen, halogen or alkyl, and PA1 n signifies 0, 1 or 2, Which compounds, in free acid or salt form, dye textiles, paper and leather. The dyeings have good light fastness, especially on polyamides and basic dyeable polypropylene, and good fastness to wet treatments, rubbing, gas fumes and dry cleaning. The dyes have good build-up power, are well-soluble in hot and cold water and reserve polyesters and polyacrylonitrile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.