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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 10689531 B1

PDFFull Text
Date of Patent:
Jun. 23, 2020

Filed:

Mar. 30, 2016

Coating composition comprising submicron calcium carbonate-comprising particles, process to prepare same and use of submicron calcium carbonate-comprising particles in coating compositions

Applicant:

Omya International Ag, Oftringen, CH;

Inventors:

Joseph McJunkins, Middleburg Heights, OH (US);

Charles Freeman, Rutland, VT (US);

Assignee:

Omya International AG, Oftringen, CH;

Attorney:

Heslin Rothenberg Farley & Mesiti P.C.

Primary Examiner:

Brieann R Johnston

Int. Cl.
CPC ...
C09D 7/40 (2018.01); C09D 175/06 (2006.01); A61K 8/02 (2006.01); C09C 1/02 (2006.01); B82Y 30/00 (2011.01); C08K 3/26 (2006.01); C09D 5/02 (2006.01); C09D 7/61 (2018.01); A61Q 19/00 (2006.01); A61K 8/19 (2006.01); C08K 3/20 (2006.01); A61Q 3/02 (2006.01); C09C 3/04 (2006.01); C01F 11/18 (2006.01);
U.S. Cl.
CPC ...
C09D 7/67 (2018.01); A61K 8/0241 (2013.01); A61K 8/19 (2013.01); A61Q 19/00 (2013.01); B82Y 30/00 (2013.01); C01F 11/18 (2013.01); C01F 11/185 (2013.01); C08K 3/26 (2013.01); C09C 1/02 (2013.01); C09C 1/021 (2013.01); C09C 3/04 (2013.01); C09D 5/028 (2013.01); C09D 7/61 (2018.01); C09D 7/68 (2018.01); C09D 175/06 (2013.01); A61K 2800/10 (2013.01); A61K 2800/412 (2013.01); A61Q 3/02 (2013.01); C01P 2004/03 (2013.01); C01P 2004/51 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01); C01P 2006/12 (2013.01); C01P 2006/22 (2013.01); C01P 2006/60 (2013.01); C08K 3/20 (2013.01); C08K 2003/265 (2013.01); Y10T 428/23943 (2015.04); Y10T 428/23986 (2015.04); Y10T 428/249953 (2015.04); Y10T 428/249962 (2015.04); Y10T 428/25 (2015.01); Y10T 442/20 (2015.04);
Abstract

A coating composition comprising an aqueous dispersion of submicron natural ground calcium carbonate particles contained in a liquid binder, wherein the resultant coating may constitute either a clear coat or a glossing and opacifying coating, depending upon the presence of certain additives such as a mineral pigment (e.g., TiO). The composition is characterised in that comprises, in the case of a clear coating, at least one ground natural calcium carbonate having a median diameter of between 0.05 and 0.15 μm, while in the case of a glossing and opacifying coating, at least one ground natural calcium carbonate having a median diameter of between 0.05 and 0.3 μm and at least one pigment having a refractive index of greater than or equal to 2.5.

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