Copolymers, preparation thereof and use as wetting agents and dispersants

US7317062B2 · kind B2 · utility

Assignee

• BYK-CHEMIE GMBH · DE

Inventors

• Wolfgang Pritschins · Wesel, DE
• Karlheinz Haubennestel · Wesel, DE
• Werner Tiegs · Rees, DE

Key dates

• Filing date: Sep 13, 2005
• Grant date: Jan 8, 2008
• Expiry date: Sep 13, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F222/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to copolymers, suitable as wetting agents and dispersants, obtainable by copolymerizing (a) 1 to 80 mol % of at least one ethylenically unsaturated 1,2-dicarboxylic acid derivative, (b) 2 to 80 mol % of at least one unsaturated monocarboxylic acid derivative having 12 to 30 carbon atoms, (c) 1 to 90 mol % of at least one polyalkyleneoxyallyl ether having a number-average molecular weight of up to 5000 g/mol and (d) 0 to 30 mol % of further, unsaturated monomers; and also reaction products of the copolymers with ammonia, amines, water, alcohols, amino alcohols and/or alkali metal hydroxides or alkaline earth metal hydroxides. The invention further relates to a process for preparing the copolymers and to their use as wetting agents and dispersants in coating materials and moulding compounds.