Patent · US Expired

Process for coloring cellulose on polyester with water-insoluble red mono-azo dyes

US4908042A · kind A · utility

2Cited by

4References

1Claims

0Family size

Inventors

Ulrich Buhler · Alzenau, DE
Manfred Hahnke · Kelkheim, DE
Michael Kunze · Rain, DE
Albert Bode · Schwalbach, DE

Key dates

Filing date	Apr 4, 1988
Grant date	Mar 13, 1990
Priority date	—
Expiry date	Apr 4, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S534/01
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Azo dyes of the formula ##STR1## wherein R.sup.1 is alkyl having 1 to 4 carbon atoms; R.sup.2 is alkyl having 1 to 3 carbon atoms; R.sup.3 is alkylcarbonyloxyethyl having 1 to 3 carbon atoms in the alkyl moiety, alkoxycarbonyloxyethyl having 1 to 4 carbon atoms in the alkoxy moiety, methoxyethoxycarbonyloxyethyl or ethoxyethoxycarbonyloxyethyl; and R.sup.4 is one of the definitions of R.sup.3 or cyanoethyl; or mixtures of at least two species of said formula are used for dyeing and printing hydrophobic fiber materials.

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