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:
Dec. 23, 2014
Filed:
May. 27, 2008
Applicants:
Patrick A. C. Gane, Rothrist, CH;
Daniel Gantenbein, Gempen, CH;
Joachim Schoelkopf, Killwangen, CH;
Inventors:
Patrick A. C. Gane, Rothrist, CH;
Daniel Gantenbein, Gempen, CH;
Joachim Schoelkopf, Killwangen, CH;
Assignee:
Mondo Minerals B.V., Amsterdam, NL;
Primary Examiner:
Int. Cl.
CPC ...
C01B 33/22 (2006.01); C01B 33/24 (2006.01); C09C 1/02 (2006.01); C01B 33/38 (2006.01); C09D 7/12 (2006.01); C08K 3/34 (2006.01);
U.S. Cl.
CPC ...
C09C 1/028 (2013.01); C01B 33/38 (2013.01); C09C 1/02 (2013.01); C09D 7/1216 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2006/12 (2013.01); C01P 2006/60 (2013.01); C08K 3/34 (2013.01);
Abstract
The present invention is directed to a process for the treatment of talc, comprising the steps of (a) providing a talc having a first brightness value B1, measured according to ISO 2469, and forming a suspension of the talc in a liquid phase, the liquid phase of the suspension comprising at least one organic solvent, (b) delaminating and/or reducing the weight median particle size dof the talc, wherein the treated talc has a brightness value B2, measured according to ISO 2469, and B2≧B1.