Azo dyes derived from 5-membered heterocyclic amines and aromatic amine couplers containing sulfo groups, or salts thereof
US4282144A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1979 |
| Grant date | Aug 4, 1981 |
| Priority date | — |
| Expiry date | Jun 1, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/3686
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are mono azo dyes derived from diazotized 5-membered heterocyclic amines and certain aniline, 1,2,3,4-tetrahydroquinoline, and benzomorpholine couplers containing sulfoalkyl groups. These dyes impart fast violet to blue shades on polyamide fibers and have the general formula EQU D--N.dbd.N--Coupler wherein D is a thiadiazol, isothiazol, pyrazol or thiophene type radical, and the Coupler is an aniline, tetrahydroquinoline, or benzomorpholine derivative wherein a --Z--SO.sub.3 M group is attached to the nitrogen thereof, the coupler ring may contain one or more substituents selected from lower alkyl, lower alkoxy, halogen, acylamido, alkylthio or aryloxy, the remaining hydrogen of the aniline coupler may be replaced by a substituent such as lower alkyl, substituted lower alkyl, lower alkenyl, aryl, or cycloalkyl, M is Na.sup.+, K.sup.+, NH.sub.4.sup.+ or H.sup.+, and Z is a linking group such as ethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.