Triaminotriarylmethane colorants

US4477381A · kind A · utility

Assignee

• BASF SE

Inventors

• Udo Mayer · Bischofswerda, DE
• Erwin Hahn · Heidelberg, DE
• Joachim Jesse · Bad Dürkheim, DE

Key dates

• Filing date: Feb 19, 1982
• Grant date: Oct 16, 1984
• Expiry date: Feb 19, 2002

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B11/20
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Triaminotriarylmethane colorants are obtainable by first reacting an aluminum or iron trihalide complex of a 4,4',4"-trihalotriphenylmethyl halide with a metanilic acid, a sulfanilic acid or a .beta.-naphthylaminesulfonic acid and then reacting the product with one or more anilines to replace the halogen atoms located in the 4-positions. The compounds according to the invention are very useful as pigments, for example in printing inks, or for toning carbon black.