Optionally substituted sulfophenyl-azo-naphthylene-azo-para-alkoxyphenyl dyes
US4049641A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1975 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Dec 18, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B31/065
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula ##STR1## wherein A is 1,4-naphthylene, substituted 1,4-naphthylene, 1,4-(5,6,7,8-tetrahydronaphthylene) or substituted 1,4-(5,6,7,8-tetrahydronaphthylene), PA2 Wherein each substituent of substituted 1,4-naphthylene and substituted 1,4-(5,6,7,8-tetrahydronaphthylene) is independently lower alkyl, lower alkoxy or halo, PA1 D is sulfophenyl or substituted sulfophenyl wherein each substituent is independently lower alkyl, lower alkoxy, nitro or halo, Each PA1 R is independently lower alkyl, and PA1 n is 0 to 2, And mixtures thereof, Are useful for dyeing and printing natural polyamides such as wool and silk, synthetic polyamides such as nylon, polyacrylonitrile, acrylonitrile copolymers and polyvinyl alcohol on which they build-up well. The dyeings are fast to light and wet treatments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.