The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2025
Filed:
Apr. 06, 2020
Applicant:
Omya International Ag, Oftringen, CH;
Inventor:
Daniel E. Gerard, Basel, CH;
Assignee:
OMYA INTERNATIONAL AG, Oftringen, CH;
Primary Examiner:
Int. Cl.
CPC ...
C01F 11/18 (2005.12); C09C 1/02 (2005.12);
U.S. Cl.
CPC ...
C09C 1/022 (2012.12); C01F 11/18 (2012.12); C01F 11/185 (2012.12); C01P 2004/61 (2012.12); C01P 2006/12 (2012.12); C01P 2006/14 (2012.12);
Abstract
The present invention relates to a process for producing a surface-reacted calcium carbonate, wherein a calcium carbonate-comprising material is treated with at least one inorganic acid and carbon dioxide in an aqueous medium to form an aqueous suspension of surface-reacted calcium carbonate, wherein the at least one water-soluble, inorganic magnesium salt is added before, during and/or after the treatment step. Furthermore, the present invention relates to a surface-reacted calcium carbonate obtained from said process and its use.