Patent · US Expired

Azo dyes containing 2-amino-3-cyano-5-formylthiophene derivatives as diazo components and substituted aniline compounds as coupling components

US4751288A · kind A · utility

5Cited by

2References

2Claims

0Family size

Assignee

BASF SE

Inventors

Udo Bergmann · Darmstadt, DE
Erwin Hahn · Heidelberg, DE
Guenter Hansen · Ludwigshafen, DE
Helmut Reichelt · Neustadt, DE

Key dates

Filing date	Mar 24, 1986
Grant date	Jun 14, 1988
Priority date	—
Expiry date	Mar 24, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S534/02
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The compounds of the formula I ##STR1## where R is unsubstituted or substituted phenyl or naphthyl, R.sup.1 and R.sup.2 are each unsubstituted or substituted alkyl, alkenyl or cycloalkyl, and one of the radicals may furthermore be hydrogen, R.sup.3 is hydrogen, methyl, methoxy, ethoxy or chlorine, and R.sup.4 is acylamino, are particularly useful for dyeing polyesters.

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