Patent · US Expired

Dye mixtures of fiber-reactive azo dyes and use thereof for dyeing material containing hydroxy-and/or carboxamido groups

US6159251A · kind A · utility

4Cited by

1References

7Claims

0Family size

Assignee

DyStar Textilfarben GmbH & Co. Deutschland KG · DE

Inventors

Ron Pedemonte · Eppstein, DE
Joachim Steckelberg · Brunsbüttel, DE
Christian Schumacher · Frankfurt am Main, DE

Key dates

Filing date	Oct 5, 1999
Grant date	Dec 12, 2000
Priority date	—
Expiry date	Oct 5, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/918
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention provides a mixture of dyes which comprise one or more monoazo dyestuffs corresponding to the general formula (1) and one or more monoazo dyestuffs corresponding to the formula (2) ##STR1## wherein R1, R2, R3, R4, R5, R6, Y.sub.1, Y.sub.2 and M are defined as given in claim 1, methods for preparing said dye mixtures and methods for dyeing hydroxy and/or carboxamido-containing materials using said dye mixtures.

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