Patent · US Expired

N-aminopyridone dyes

US5580980A · kind A · utility

11Cited by

2References

5Claims

0Family size

Assignee

BASF SE

Inventors

Karl-Heinz Etzbach · Bischofswerda, DE
Ernst Schefczik
Ruediger Sens · Mannheim, DE
Matthias Wiesenfeldt · Mutterstadt, DE

Key dates

Filing date	Nov 1, 1993
Grant date	Dec 3, 1996
Priority date	—
Expiry date	Nov 1, 2013

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB41M5/39
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Pyridone dyes useful for thermal transfer have the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, Y, X and Z are defined in the specification.

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