Patent · US Expired

Mixtures of monoazo dyes containing halogen and cyano substituents

US4985043A · kind A · utility

3Cited by

4References

7Claims

0Family size

Assignee

Cassella Aktiengesellschaft · DE

Inventors

Ulrich Buhler · Alzenau, DE
Manfred Hahnke · Kelkheim, DE
Reinhard Kuhn · Frankfurt am Main, DE
Margarete Boos · Hattersheim, DE

Key dates

Filing date	Mar 15, 1989
Grant date	Jan 15, 1991
Priority date	—
Expiry date	Mar 15, 2009

Classification

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

Abstract

Mixtures of monoazo dyes suitable for dyeing and printing hydrophobic fiber materials and mixtures thereof with natural fibers contain one or more dyes of the formula I ##STR1## and one or more dyes of the formula II ##STR2## in which Hal denotes bromo or chloro; R.sup.1 and R.sup.2, independently of one another, denote methyl or ethyl; R.sup.3, R.sup.4, R.sup.5 and R.sup.6, independently of one another, denote linear alkyl having 1 to 4 carbon atoms or alkenyl having 3 or 4 carbon atoms; and R denotes methyl, acetylamino, propionylamino, i-butyrylamino, or n-butyrylamino.

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