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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.:

US 10843932 B1

PDFFull Text
Date of Patent:
Nov. 24, 2020

Filed:

Mar. 03, 2016

Surface-coated calcium carbonate-containing material and process for the purification of water

Applicant:

Omya International Ag, Oftringen, CH;

Inventors:

Martine Poffet, Olten, CH;

Pascal Jäggi, Trimbach, CH;

Daniel E. Gerard, Basel, CH;

Peter Hess, Neuwied, DE;

Assignee:

Omya International AG, Oftringen, CH;

Attorney:

Fay Sharpe LLP

Primary Examiner:

Hoa (Holly) Le

Int. Cl.
CPC ...
B32B 5/16 (2006.01); C01F 11/18 (2006.01); C02F 1/28 (2006.01); C02F 11/14 (2019.01); C02F 1/52 (2006.01); B01J 20/32 (2006.01); B01J 20/26 (2006.01); B01J 20/04 (2006.01); B01J 20/24 (2006.01); B01J 20/28 (2006.01); B01J 20/30 (2006.01); C08L 31/06 (2006.01); C02F 103/00 (2006.01); C02F 103/08 (2006.01); C02F 103/10 (2006.01); C02F 103/28 (2006.01); C02F 1/56 (2006.01); C02F 101/10 (2006.01); C02F 103/14 (2006.01); C02F 103/22 (2006.01); C02F 103/36 (2006.01);
U.S. Cl.
CPC ...
C01F 11/185 (2013.01); B01J 20/043 (2013.01); B01J 20/24 (2013.01); B01J 20/261 (2013.01); B01J 20/262 (2013.01); B01J 20/264 (2013.01); B01J 20/28004 (2013.01); B01J 20/28057 (2013.01); B01J 20/3085 (2013.01); B01J 20/3204 (2013.01); B01J 20/327 (2013.01); B01J 20/3272 (2013.01); B01J 20/3274 (2013.01); B01J 20/3276 (2013.01); C02F 1/288 (2013.01); C02F 1/5236 (2013.01); C02F 11/14 (2013.01); C08L 31/06 (2013.01); C01P 2002/60 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/40 (2013.01); C02F 1/5263 (2013.01); C02F 1/56 (2013.01); C02F 2101/10 (2013.01); C02F 2103/007 (2013.01); C02F 2103/08 (2013.01); C02F 2103/10 (2013.01); C02F 2103/14 (2013.01); C02F 2103/22 (2013.01); C02F 2103/28 (2013.01); C02F 2103/365 (2013.01);
Abstract

The present invention relates to at least one surface-reacted calcium carbonate-comprising mineral material and/or a surface-reacted precipitated calcium carbonate that is/are coated with at least one anionic polymer to obtain a surface-coated calcium carbonate-comprising material as well as to a process for the preparation of the surface-coated calcium carbonate-comprising material. Furthermore, the present invention relates to a process for the purification of water and/or dewatering of sludges and/or suspended sediments and to the use of a surface-coated calcium carbonate-comprising material for water purification and/or dewatering of sludges and/or suspended sediments.

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