Aqueous polymer dispersions containing organic compounds having carbonate groups and carbonyl groups and paints and coating systems produced therewith

US5314936A · kind A · utility

Assignee

• BASF SE

Inventors

• Manfred Schwartz · Bischofswerda, DE
• Reinhard Baecher · Bad Dürkheim, DE
• Bernhard Dotzauer · Frankenthal (Pfalz), DE
• Eckehardt Wistuba · Bad Dürkheim, DE
• Andreas Boettcher · Leimen, DE

Key dates

• Filing date: Feb 12, 1992
• Grant date: May 24, 1994
• Expiry date: Feb 12, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2111/00586
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to an aqueous polymer dispersion which may optionally contain mineral additives and/or pigments and which essentially consists of a mixture of PA0 A) a 20% to 65% w/w aqueous dispersion of a copolymer of PA1 (a) an olefinically unsaturated compound containing one or more carboxyl groups and/or amide groups, and PA1 (b) at least two monomers selected from the group consisting of acrylates and methacrylates and vinylaromatic compounds, and PA0 B) from 0.1 to 5% w/w, based on the weight of the copolymer contained in component (A), of at least one aromatic ketone of the general formula (I) ##STR1## in which R stands for an alkyl or aryl radical and R.sup.1 stands for an aryl radical containing from 1 to 3 radicals of the formula --O--C(O)--O-- attached to one or more oxaalkylene groups. Such polymer dispersions are suitable for the manufacture of paints and coating systems.