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 9920182 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 20, 2018

Filed:

Dec. 09, 2014
Applicant:

Kronos International, Inc., Leverkusen, DE;

Inventors:

Uwe Wilkenhoener, Wuppertal, DE;

Juergen Bender, Monehim, DE;

Ingo Grosser, Cologne, DE;

Assignee:

Kronos International, Inc., Leverkusen, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K 3/00 (2006.01); C08K 3/32 (2006.01); C08K 3/22 (2006.01); C08K 3/16 (2006.01); C08K 3/26 (2006.01); C09C 1/36 (2006.01); C09C 1/00 (2006.01); C09C 1/02 (2006.01);
U.S. Cl.
CPC ...
C08K 3/32 (2013.01); C08K 3/16 (2013.01); C08K 3/22 (2013.01); C08K 3/26 (2013.01); C09C 1/0084 (2013.01); C09C 1/3661 (2013.01); C01P 2004/51 (2013.01); C01P 2004/52 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C08K 2003/162 (2013.01); C08K 2003/2241 (2013.01); C08K 2003/262 (2013.01); C08K 2003/267 (2013.01); C08K 2003/324 (2013.01); C09C 1/02 (2013.01);
Abstract

The invention relates to a method for manufacturing composite particles, particularly composite particles based on titanium dioxide and carbonate, with the help of combined mixing, homogenization and precipitation in a pipeline mixer based on the rotor-stator principle. The method is based on an aqueous suspension of a particulate base component (e.g. titanium dioxide), which is preferably produced in an intermediate vessel equipped with a high-speed agitator. At least one of the required precursor substances and/or a pH-controlling component for precipitating calcium carbonate, for example, is metered into the pipeline mixer, and the calcium carbonate is precipitated. The method can be operated as a continuous process or as a batch process and permits shorter production times. The composite particles produced display homogeneous dispersion of the precipitated particles and the particulate base component.


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Wilkenhoener, Uwe. (2018). Method for manufacturing composite particles (U.S. Patent No. 9920182). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9920182

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