Latex paint containing titanium dioxide pigment

US11118083B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Immanuel WILLERICH · Schifferstadt, DE
• Volodymyr Boyko · Mannheim, DE
• Bernd Reck · Arnstadt, DE
• Jules Mikhael · Mannheim, DE
• Joost LESWIN · Mannheim, DE
• Matthias MAIER · Sandhausen, DE
• Tanja ROST · Mannheim, DE
• Markus Rueckel · Mannheim, DE

Key dates

• Filing date: Oct 6, 2017
• Grant date: Sep 14, 2021
• Expiry date: Aug 13, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K2003/2241
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to latex paints containing a) a multistage carboxylated polymer latex binder obtainable by multistage aqueous emulsion polymerisation of at least one non-ionic monomer which is selected from C1-C20-alkyl esters of acrylic acid, C1-C20-alkylesters of methacrylic acid, and vinyl aromatic monomers; one or more monoethylenically unsaturated monomers M2, which are selected from monoethylenically unsaturated monocarboxylic acids having 3 to 6 carbon atoms and monoethylenically unsaturated dicarboxylic acids having 4 to 6 carbon atoms, and where in at least one stage, monomers M2 added in this stage is at least 6% by weight; b) a titanium dioxide pigment; c) a polymeric dispersant selected from monoethylenically unsaturated monocarboxylic acids having 3 to 6 carbon atoms and monoethylenically unsaturated dicarboxylic acids having 4 to 6 carbon atoms, where the monomers make up at least 85% of the monomers forming the polymeric dispersant; and d) a thickener polymer.