Hardenable composition based on a Michael addition product, process for its preparation and its use

US5300571A · kind A · utility

Assignee

• Basf Lacke & Farben Aktiengesellschaft · DE

Inventors

• Werner-Alfons Jung · Ascheberg, DE
• Peter Hoffmann · Senden, DE

Key dates

• Filing date: Mar 26, 1991
• Grant date: Apr 5, 1994
• Expiry date: Mar 26, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F290/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a hardenable composition containing PA1 A) compounds having at least two activated double bonds (I) based on .alpha.,.beta.-unsaturated carbonyl compounds, .alpha.,.beta.-unsaturated carboxylic acid esters or .alpha.,.beta.-unsaturated nitrile groups, PA1 B) compounds containing either at least one primary amino group which is blocked by an aldehyde or ketone having not more than 10 C atoms or at least 2 groups which can be hydrolyzed to NH groups, and PA1 C) customary additives, if appropriate catalysts, if appropriate pigments and organic solvents. Either component A or component B or components A and B are based on a branched soluble acrylate copolymer P, which is obtainable by copolymerization of PA1 a) 5 to 30% by weight of monomers having at least two ethylenically unsaturated polymerizable double bonds, PA1 b) 5 to 60% by weight of monomers having a functional group and PA1 c) 5 to 90% by weight of other ethylenically unsaturated monomers, the sum of a, b and c being 100% by weight. PA1 The invention also relates to processes for the preparation of the hardenable composition and its use.