Preservation of a mineral molding

US6306460A · kind A · utility

Assignee

• BASF SE

Inventors

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

Key dates

• Filing date: Oct 15, 1997
• Grant date: Oct 23, 2001
• Expiry date: Oct 15, 2017

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.