Aqueous secondary dispersion containing phosphate groups

US5041495A · kind A · utility

Assignee

• BASF SE

Inventors

• Thomas Schwerzel · Meckenheim, DE
• Gerhard Auchter · Bad Dürkheim, DE
• Eckehardt Wistuba · Bad Dürkheim, DE

Key dates

• Filing date: Aug 6, 1990
• Grant date: Aug 20, 1991
• Expiry date: Aug 6, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F230/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aqueous secondary dispersions containing phosphate groups are obtainable by copolymerization of PA1 (A) 25-98% by weight of acrylates and/or methacrylates, PA1 (B) 1-10% by weight of acrylic and/or methacrylic acid, PA1 (C) 1-8% by weight of a compound of the general formula ##STR1## where R.sup.1 and R.sup.2 are each hydrogen and/or a C.sub.1 -C.sub.8 -hydrocarbon radical and Z is a straight-chain or branched C.sub.1 -C.sub.8 -alkylene, and PA1 (D) 0-60% by weight of a copolymerizable olefinically unsaturated compound, in an organic solvent, neutralization of the copolymer solution and dilution with water and, if required, removal of solvent by distillation.