Patent · US Expired

Red pigment obtained by coupling diazotized 4-aminonaphthalimide with 2,6-dihydroxy-3-cyano-4-methylpyridine

US4052378A · kind A · utility

1Cited by

4References

1Claims

0Family size

Assignee

BASF Farben Fasern Aktiengesellschaft · DE

Inventors

Leonhard Heckl
Egon Liedek · Eßlingen, DE
Wolfgang Ruff · Stuttgart, DE

Key dates

Filing date	Jan 21, 1976
Grant date	Oct 4, 1977
Priority date	—
Expiry date	Jan 21, 1996

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B43/00
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The azo dye of the formula ##STR1## is a brilliantly red pigment which imparts lightfast and migration resistant color to printing inks, plastics, and the like.

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