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:
Jun. 16, 2026
Filed:
May. 23, 2023
Omya International Ag, Oftringen, CH;
Daniel Edward Gerard, Basel, CH;
Jamal Ftouni, Zofingen, CH;
Omya International AG, Oftringen, CH;
Abstract
The present invention refers to a process for producing white UV-absorbing surface-reacted calcium carbonate doped with a titanium species, comprising the steps of providing a calcium carbonate-comprising material, a calcium phosphate selected from monocalcium phosphate and/or dicalcium phosphate, and at least one titanium comprising substance, treating the calcium carbonate-comprising material with the calcium phosphate in an aqueous medium to form an aqueous suspension and grinding the aqueous suspension at a pH value of at least 4.2 to form an aqueous suspension of surface-reacted calcium carbonate, wherein the calcium carbonate-comprising material and the calcium phosphate in combination have a calcium ion to phosphate ion molar ratio (Ca:PO) in the range from 1.75:1 to 100:1, and wherein the at least one titanium comprising substance is added before and/or during and/or after the treatment step and/or before and/or during the grinding step.