Aqueous (meth)acrylate polymer dispersion

US6569970B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Bernd Reck · Arnstadt, DE
• Gernot Franzmann · Worms, DE
• Bertold Bechert
• Reinhard Baecher · Bad Dürkheim, DE
• Gerd Rehmer · Beindersheim, DE

Key dates

• Filing date: Jul 24, 2001
• Grant date: May 27, 2003
• Expiry date: Jul 24, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F220/382
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In a process for preserving a mineral molding by coating the surface of the mineral molding with an aqueous composition comprising an aqueous polymer dispersion, the dispersed polymer P comprises an ethylenically unsaturated acid of the 2-acrylamido-2-methylpropanesulfonic acid type polymerized into it in free-radically polymerized form.