Process for producing an anionic clay-containing composition

US6171991A · kind A · utility

Assignee

• AKZO NOBEL N.V. · NL

Inventors

• Dennis Stamires · Dana Point, US
• Michael Brady · West Hollywood, US
• William Jones · Cambridge, GB
• Fathi Kooli · Tsukuba, JP

Key dates

• Filing date: Feb 9, 1999
• Grant date: Jan 9, 2001
• Expiry date: Feb 9, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/32
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

This patent describes an economical and environment-friendly continuous process for the synthesis of anionic clay-containing compositions. It involves reacting a slurry comprising aluminium trihydrate and/or its calcined form, with a magnesium source. There is no necessity to wash or filter the product. It can be spray dried directly to form microspheres or can be extruded to form shaped bodies. The product can be combined with other ingredients in the manufacture of catalysts, absorbents, pharmaceuticals, cosmetics, detergents, and other commodity products.