Method of coating a shaped mineral article

US6645563B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Cheng-Le Zhao · Charlotte, US
• Manfred Schwartz · Bischofswerda, DE
• Bertold Bechert
• Harm Wiese · Heidelberg, DE
• Wolfgang Hümmer · Birkenheide, DE

Key dates

• Filing date: Dec 7, 2000
• Grant date: Nov 11, 2003
• Expiry date: Dec 7, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2111/21
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Aqueous formulations comprising as film-forming constituent at least one copolymer P, synthesized from ethylenically unsaturated monomers M, are used for coating shaped mineral articles, the copolymer P having a glass transition temperature in the range from −25 to +80° C. and the monomers M comprising more than 0.2% by weight and up to 5% by weight, based on their overall weight, of itaconic acid as monomer M1.