Preparation of spheroidal alumina particles

US3968225A · kind A · utility

Assignee

• Labofina, S.A. · BE

Inventors

• Jacques Andre · Sainte-Geneviève-des-Bois, FR
• Raymond Mark Cahen · Brussels, BE
• Henri Robert Debus · Meise, BE
• Rene Odon Lammers · Brussels, BE
• Hugo Van Thillo · Grimbergen, BE

Key dates

• Filing date: Feb 10, 1975
• Grant date: Jul 6, 1976
• Expiry date: Feb 10, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/22
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for preparing aluminium oxide beads from alumina hydrogel, which comprises polymerizing, in a hot and substantially water-immiscible fluid, an aqueous mixture comprising alumina hydrogel and alumina hydrosol and a water-soluble monomer whose uncross-linked polymer is water-soluble or forms a gel, this mixture being dispersed as droplets into a hot fluid in which substantial polymerization of the monomer occurs.