Patent · US Expired

Azo pigments derived from 2-hydroxy-3-carboxynaphthalene containing a substituted or unsubstituted phthalimide

US3953420A · kind A · utility

3Cited by

2References

3Claims

0Family size

Assignee

Badische Anilin- & Soda-Fabrik Aktiengesellschaft

Inventors

Peter Dimroth · Ludwigshafen, DE
Frank Dost
Rolf Urtel

Key dates

Filing date	Jan 26, 1973
Grant date	Apr 27, 1976
Priority date	—
Expiry date	Jan 26, 1993

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/3192
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Azo pigments derived from 2-hydroxy-3-carboxy-naphthalene and containing a substituted or unsubstituted phthalimide radical. The majority give red colorations and due to their excellent fastness properties are particularly valuable for use in surface coatings and resins.

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