Mixtures of optionally substituted sulfophenyl-azo-naphthylene or tetrahydronaphthylene-azo-para-alkoxyphenyl dyes
US3951590A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1973 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Mar 26, 1993 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S534/01
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula ##SPC1## Wherein PA1 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), 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, PA1 Each 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.