Aqueous dyestuff or pigment dispersions

US4369070A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Volker Aign · Monheim, DE
• Karlheinz Wolf · Leverkusen, DE
• Reinhold Hornle
• Norbert Pusch · Leverkusen, DE
• Klaus Walz

Key dates

• Filing date: Aug 7, 1981
• Grant date: Jan 18, 1983
• Expiry date: Aug 7, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D17/001
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous dyestuff dispersions containing water-insoluble dyestuffs and water-soluble oxalkylation products which can be obtained by subjecting aromatic compounds containing phenolic OH groups to a condensation reaction with formaldehyde and amines which contain a NH group which is reactive towards formaldehyde, or containing derivatives of such oxalkylation products are suitable for pigmenting natural or synthetic materials.