Patent · US Expired

Process for producing Mg-containing no-Al anionic clay

US6444188B1 · kind B1 · utility

7Cited by
20References
14Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 11, 2000
Grant dateSep 3, 2002
Priority date—
Expiry dateSep 18, 2020

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC01P2002/22
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

This patent describes economical and environment-friendly processes for the synthesis of Mg-containing non-Al anionic clays. It involves (hydro)thermally reacting a slurry comprising a Mg metals source with a trivalent metals source to directly obtain Mg-containing non-Al anionic clay, the Mg sources being an oxide, hydroxide or a carbonate. 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 that contain anionic clays.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.