Dye dispersants: aryl sulphonic acid-formaldehyde condensate or ligninsulfonate

US5186846A · kind A · utility

Assignee

• BASF SE

Inventors

• Ralf Brueckmann · Putlitz, DE
• Willi Bury · Ludwigshafen, DE
• Johannes P. Dix · Schifferstadt, DE
• Manfred Herrmann
• Waldemar Dlugosch · Ludwigshafen, DE
• Erich Kromm · Bad Dürkheim, DE
• Herbert Letter · Ludwigshafen, DE
• Norbert Zimmermann · Waldsee, DE
• Wolf-Dieter Kermer
• Klaus Taeger · Freinsheim, DE

Key dates

• Filing date: Jun 13, 1991
• Grant date: Feb 16, 1993
• Expiry date: Jun 13, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K23/12
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dispersants of increased bioeliminability or biodegradability for use in dye and pigment preparations, as tanning aids, in plastics production and in crop protection formulations contain from 3 to 50% by weight of one or more aromatic or long-chain aliphatic carboxylic acids, salts thereof or anhydrides thereof or a mixture thereof.