Preparation containing gypsum from flue gas desulphurisation, method for using the same and use thereof

US7071254B1 · kind B1 · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien (Henkel KGAA) · DE

Inventors

• Johann Klein · Goldkronach, DE
• Gaby Schilling · Goldkronach, DE
• Sabine Sipmann · Monheim, DE
• Ralph Schuetze · Hilden, DE
• Friedheim Koepnick · Goldkronach, DE
• Helmut Loth · Essen, DE
• Klaus Helpenstein · Rheydt, DE
• Wolfgang Klauck · Meerbusch, DE
• Claudia Mai · Goldkronach, DE

Key dates

• Filing date: Nov 10, 1999
• Grant date: Jul 4, 2006
• Expiry date: Nov 10, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D7/69
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a composition, and a method of preparing and using the same. The composition contains at least one water-soluble or water-dispersible polymer or combinations thereof, and one or more filler particles that includes WDP gypsum particles. The WDP gypsum particles are obtained from waste gas-desulphurization plants and have a particles size distribution mean diameter ranging from 13 μm to 500 μm. The composition is particularly useful as a surface coating, a surfacing compound, a sealing compound, an adhesive or a molding composition.