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:
Jul. 18, 2023
Filed:
May. 20, 2020
Applicant:
Shiraishi Kogyo Kaisha, Ltd., Osaka, JP;
Inventors:
Assignee:
SHIRAISHI KOGYO KAISHA, LTD., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K 9/04 (2006.01); C08K 3/26 (2006.01); C08L 27/06 (2006.01); C09C 3/08 (2006.01);
U.S. Cl.
CPC ...
C08K 9/04 (2013.01); C08K 3/26 (2013.01); C08L 27/06 (2013.01); C09C 3/08 (2013.01); C08K 2003/265 (2013.01);
Abstract
Provided is a surface-treated calcium carbonate that can make a vinyl chloride-based resin composition less colorable in a weathering test and excellent in impact strength. The surface-treated calcium carbonate is a calcium carbonate subjected to treatment with a surface treatment agent in which a proportion of saturated fatty acid contained in a fatty acid is 85% by mass or more, and has a content of elemental iron of 0.01% by mass or less, a content of elemental zinc of 0.1 to 2% by mass introduced by the treatment with the surface treatment agent, and a BET specific surface area of 5 to 30 m/g.