Aqueous primary dispersion, substantially or completely devoid of volatile organic substances, method for the production thereof and use of the same

US7157526B2 · kind B2 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Ralf Nickolaus · Drensteinfurt, DE
• Heinz-Peter Rink · Hachenburg, DE
• Reinhold Clauss · Steinfurt, DE
• Elisabeth Wessling · Emsdetten, DE
• Wilma Locken · Haltern, DE
• Nicole Freitag · Hachenburg, DE
• Dunja Mikolajetz · Ascheberg, DE

Key dates

• Filing date: Feb 13, 2002
• Grant date: Jan 2, 2007
• Expiry date: Sep 2, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J151/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aqueous primary dispersion, substantially or entirely free of volatile organic compounds, and comprising dispersed and/or emulsified, solid and/or liquid polymer particles and/or dispersed solid core/shell particles with a particle diameter≦500 nm, preparable by free-radical micro- or miniemulsion polymerization of at least one olefinically unsaturated monomer in the presence of at least one hydrophobic additive and of at least one oligomeric polyester with a number-average molecular weight of from 150 to 1 500 daltons, a hydroxyl number of from 100 to 1 000 mg KOH/g, and an acid number<20 mg KOH/g and also a process for preparing it and its use as a coating material, adhesive or sealing compound or to prepare a coating material, an adhesive or a sealing compound.