Oxidatively cross-linkable, water dilutable binders, a process for their preparation and their use

US4985506A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Harald Blum · Wachtendonk, DE
• Peter Hohlein · Kempen, DE
• Michael Sonntag · Odenthal, DE
• Wolfgang Wellner · Bensberg, DE

Key dates

• Filing date: Jun 26, 1989
• Grant date: Jan 15, 1991
• Expiry date: Jun 26, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2810/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Oxidatively cross-linkable, water dilutable binders suitable for lacquers, coating compositions and sealing compounds are modified co-polymers of olefinically unsaturated compounds, having a molecular weight of 6000 to 160,000 and having for each 100 grams of solids content, a total of from 60 to 250 milliequivalents of chemically incorporated carboxyl groups, of which from 10 to 100% are neutralized thereby rendering the product dilutable in water and PA1 from 15 to 50% by weight of chemically incorporated moieties corresponding to the formula EQU --O--R wherein PA0 R represents an olefinically monounsaturated or polyunsaturated aliphatic hydrocarbon having a molecular weight above 166 and containing from 12 to 22 carbon atoms, are prepared by: PA0 (a) preparing a co-polymer having a molecular weight from 5000 to 80,000, determined by gel permeation chromatography, and having intramolecular carboxylic acid anhydride units corresponding to the formula ##STR1## and an anhydride equivalent weight of from 240 to 1960 by a radically initiated co-polymerization of olefinically unsaturated dicarboxylic acid anhydrides with other olefinically unsaturated monomers, PA0 (b) reacting at leas…