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:
Nov. 09, 2021
Filed:
Feb. 23, 2018
Applicant:
Shiraishi Kogyo Kaisha, Ltd., Osaka, JP;
Inventors:
Maya Yoshida, Amagasaki, JP;
Kenichiro Eguchi, Amagasaki, JP;
Assignee:
SHIRAISHI KOGYO KAISHA, LTD., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C01F 11/18 (2006.01); C08K 3/26 (2006.01); B01J 35/02 (2006.01); B01J 35/06 (2006.01); B01J 35/10 (2006.01);
U.S. Cl.
CPC ...
C01F 11/181 (2013.01); C01F 11/185 (2013.01);
Abstract
Provided are a calcium carbonate having a small particle diameter and easily dispersible in polymers and a production method therefor. A calcium carbonate has a magnesium content of 12000 to 120000 ppm, a BET specific surface area of 60 to 120 m/g, and a crystallite size of (104) plane of 20 to 50 nm, and particles of the calcium carbonate are concatenated.