Patent · US Expired

Black dye mixtures of fiber-reactive azo dyes, methods for their preparation and use thereof for dyeing hydroxy-and/or carboxamido-containing fiber material

US6623534B2 · kind B2 · utility

0Cited by

6References

9Claims

0Family size

Assignee

DyStar Textilfarben GmbH & Co. Deutschland KG · DE

Inventors

Ronald Pedemonte · Wesley Chapel, US
Joachim Steckelberg · Brunsbüttel, DE
Werner Russ · Flörsheim, DE

Key dates

Filing date	Dec 19, 2001
Grant date	Sep 23, 2003
Priority date	—
Expiry date	Mar 5, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/924
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Deep black-dyeing dye mixtures comprising a disazo dye conforming to the general formula (1), and one or more disazo dyes conforming to the general formula (2), wherein the amide group is in the 6, 7, or 8 position relative to the hydroxy group and wherein:M, n, W, R1, R2, R3, R4, R5, R11, L1, L2, L3 are as defined in claim 1 methods for their preparation and use thereof for dyeing hydroxyl- and/or carboxamido-containing fiber material.

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