Binders for aqueous, physically drying anticorrosion coatings based on a polymer dispersion containing a monoalkyl phosphate

US4749735A · kind A · utility

Assignee

• BASF SE

Inventors

• Rolf Dersch · Bischofswerda, DE
• Heribert Kossmann · Ludwigshafen, DE
• Eckehardt Wistuba · Bad Dürkheim, DE

Key dates

• Filing date: Jun 20, 1986
• Grant date: Jun 7, 1988
• Expiry date: Jun 20, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D125/14
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous anticorrosion coatings which contain a binder based on styrene/alkyl (meth)acrylate copolymer dispersions which contain PA1 (a) from 0.5 to 4% by weight of a monoalkyl phosphate having a phosphorus content of not less than 7% and PA1 (b) from 0.1 to 3.5% by weight of an oxyethylated alkylphenol, where alkyl is of 8 or 9 carbon atoms, and/or of an oxyethylated C.sub.8 -C.sub.18 -fatty alcohol, the percentages by weight being based on the amount of copolymer and the copolymers having a mean particle diameter of from 0.01 to 0.5 .mu.m and an MFT of from 5.degree. to 50.degree. C., exhibit good adhesion, especially to iron and steel, and are particularly resistant to weathering.