Process for improving particle size distribution of calcium carbonate-comprising material

US10723885B2 · kind B2 · utility

Assignee

• OMYA INTERNATIONAL AG · CH

Inventors

• Michael Pohl · Villach, AT
• Christian Rainer · Klagenfurt, AT
• Martin Brunner · Pforzheim, DE
• Jürgen Spehn · Safenwil, CH
• Michael Tinkl · Weil am Rhein, DE
• Dennis Werner · Redmond, US
• Armelle Senti-Wenk · Wettingen, CH
• Emmanuel Goutard · Sarlat-la-Canéda, FR

Key dates

• Filing date: Sep 28, 2015
• Grant date: Jul 28, 2020
• Expiry date: Sep 28, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K2003/265
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the preparation of an aqueous suspension comprising at least one calcium carbonate-comprising material, the calcium carbonate-comprising material having a ratio of particles having an average particle size d80 value to particles having an average particle size d20 value [d80/d20] in the range from 1.5 to 4 and the use of the calcium carbonate-comprising material in paper and board applications, in cosmetics, in caulks and sealants, in adhesives, in paints and coatings, in fibre applications, in plastics applications or for the replacement of PCC in general.