Patent · US Expired

Mixtures of blue-dyeing fiber-reactive dyes and their use for dyeing hydroxy-and/or carboxamido-containing fiber material

US5704951A · kind A · utility

8Cited by

2References

7Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Daniele Negri · Busto Arsizio, IT
Andreas von der Eltz · Frankfurt am Main, DE
Werner Russ · Flörsheim, DE
Bengt-Thomas Grobel · Idstein, DE

Key dates

Filing date	Apr 1, 1996
Grant date	Jan 6, 1998
Priority date	—
Expiry date	Apr 1, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/0041
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A solid or dissolved dye mixture of azo dyes having fiber-reactive groups of the vinyl sulfone series, yielding dyeings of blue color shade, comprising one or more copper formazane dyes of the general formula (1) shown and defined in claim 1, one or more disazo dyes of the general formula (2) shown and defined in claim 1, and one or two monoazo dyes of the general formula (3) shown and defined in claim 1, respectively in the description part of the patent application, which dye mixtures are suitable for dyeing hydroxy- and/or caroboxamido groups containing materials, in particular fiber materials, such as cellulose fibers, for example cotton, wool and synthetic polyamide fibers, also together with other suitable dyes in trichromatic dyeing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.