Patent · US Active

Cyclic process for the preparation of barium sulphate and lithium metal phosphate compounds

US8420215B2 · kind B2 · utility

3Cited by

4References

16Claims

0Family size

Assignee

Sued-Chemie IP GmbH & Co. KG · DE

Inventors

Christian Vogler · Blaustein, DE
Klaus Langer · Erlangen, DE
Andreas Pollner · Moosburg an der Isar, DE
Gerhard Nuspl · Munich, DE

Key dates

Filing date	Jul 14, 2008
Grant date	Apr 16, 2013
Priority date	—
Expiry date	Aug 16, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A cyclic process for the preparation of barium sulphate and lithium-iron phosphate comprising (i) preparing an aqueous solution containing lithium and sulphate ions and (ii) adding solid barium hydroxide at a temperature of more than 50° C., wherein the barium hydroxide is added over a period of less than 15 minutes. Also, barium sulphate obtainable by the process according to the invention.

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