Process for the manufacture of metal complex dyes

US4171300A · kind A · utility

Assignee

• Ciba-Geigy · US

Inventors

• Peter Donath · Grenzach, DE
• Gerhard Back · Lörrach, DE

Key dates

• Filing date: Apr 3, 1978
• Grant date: Oct 16, 1979
• Expiry date: Apr 3, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B45/01
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the manufacture of metal complex dyes, wherein a metallisable dye is reacted with a metal compound in a solvent and in the presence of a hydroxycarboxylate.