Short-prismatic aluminum hydroxide, process for preparing same from supersaturated sodium aluminate-liquor, and compositions containing same

US5127950A · kind A · utility

Assignee

• LONZA LTD · CH

Inventors

• Hans Bongartz · Elsdorf, DE
• Georg Kirschbaum · Nideggen, DE
• Klaus Kramer · Landau, DE

Key dates

• Filing date: Sep 11, 1990
• Grant date: Jul 7, 1992
• Expiry date: Sep 11, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/60
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Process for the production of a short-prismatic aluminum hydroxide by decomposing a supersaturated sodium aluminate liquor. The product can be used as a pigment and filler in the paper industry, as a flame-retardant filler in plastics and as a white pigment in paints and enamels.