Deep black dye mixtures of fiber-reactive azo dyes and use thereof for dyeing hydroxy- and/or carboxamido-containing fiber material
US5931974A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1998 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Jul 28, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/924
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A dye mixture comprising one or more disazo dyes composed of 1-amino-3,6-disulfo-8-naphthol as the coupling component and of two diazo components of the aniline series containing each a fiber-reactive group of the vinylsulfone series, one or more monoazo dyes composed of a carboxy-substituted benzoylamino-sulfo-naphthol coupling component and a diazo component of the aniline series, containing a fiber-reactive group of the vinylsulfone series and optionally one or two monoazo dyes with 1-amino-3,6-disulfo-8-naphthol as a coupling component to which is coupled in the ortho-position to the amino group a diazo component of the aniline series substituted by a fiber-reactive group of the vinylsulfone series. The dye mixtures yield on hydroxy- and/or carboxamido-containing fiber materials, such as cellulose fibers, in particular cotton, or on, for example, wool and synthetic polyamide fibers, deep black dyeings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.