Solids composition based on clay minerals and use thereof

US6025303A · kind A · utility

Assignee

• SKW Trostberg Aktiengesellschaft · DE

Inventors

• Gregor Keilhofer · Tacherting, DE
• Johann Plank · Kelheim, DE

Key dates

• Filing date: Jun 25, 1998
• Grant date: Feb 15, 2000
• Expiry date: Jun 25, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S507/904
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A solids composition based on clay minerals and consisting of a) 40-99.8 wt. % of a clay mineral with a reduced moisture content of .ltoreq.7 wt. %, b) 0.01-30 wt. % of a mixed metal hydroxide and c) 0.01-30 wt. % of a solid base, and if necessary other additives, is described. The solids composition of the invention is an easy-to-use thickening agent for water-based drilling fluids, and has a long-term stability of at least three months.