Aqueous primary dispersions and coating agents, methods for producing them and their use

US7034074B2 · kind B2 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Maximilian Bendix · Hachenburg, DE
• Heinz-Peter Rink · Hachenburg, DE
• Elisabeth Wessling · Emsdetten, DE
• Reinhold Clauss · Steinfurt, DE
• Ralf Nicholaus · Drensteinfurt, DE

Key dates

• Filing date: Mar 10, 2001
• Grant date: Apr 25, 2006
• Expiry date: Aug 24, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31855
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aqueous primary dispersions and coating materials comprising dispersed and/or emulsified, solid and/or liquid polymer particles and/or dispersed solid core-shell particles having a diameter≦500 nm, preparable by free-radical microemulsion or miniemulsion polymerization of at least one olefinically unsaturated monomer (A) in the presence of at least one hydrophobic crosslinking agent for the (co)polymer resulting from the monomer or monomers (A), wherein said monomer or monomers (A) is or are dispersed prior to (co)polymerization in an aqueous dispersion of said crosslinking agent or agents; processes for preparing them, and their use.