Aqueous primary dispersions and coating matters, a method for producing same and the use thereof

US6884839B1 · kind B1 · utility

Assignee

• BASF COATINGS GMBH · DE

Inventors

• Maximilian Bendix · Hachenburg, DE
• Reinhold Clauss · Steinfurt, DE
• Ralf Nickolaus · Drensteinfurt, DE
• Wolfgang Bremser · Münster, DE

Key dates

• Filing date: Nov 8, 2000
• Grant date: Apr 26, 2005
• Expiry date: Aug 11, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F220/20
• 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 controlled free-radical microemulsion or miniemulsion polymerization of A) at least one olefinically unsaturated monomer and B) at least one olefinically unsaturated monomer which is different than the olefinically unsaturated monomer (A) and has the general formula I: R1R2C═CR3R4 (I), in which the radicals R1, R2, R3 and R4 independently of one another are hydrogen atoms or substituted or unsubstituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl, cycloalkylaryl, arylalkyl or arylcycloalkyl radicals, with the proviso that at least two of the variables R1, R2, R3 and R4 are substituted or unsubstituted aryl, arylalkyl or arylcycloalkyl radicals, especially substituted or unsubstituted aryl radicals; and in the presence of (C) at least one hydrophobic cross-linking agent for the copolymer resulting from the starting products (A) and (B).