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. 21, 2021
Filed:
Apr. 07, 2016
Applicant:
Tokai Carbon Co., Ltd., Tokyo, JP;
Inventor:
Kengo Kurisu, Tokyo, JP;
Assignee:
TOKAI CARBON CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C09C 1/48 (2006.01); C08L 21/00 (2006.01);
U.S. Cl.
CPC ...
C09C 1/48 (2013.01); C08L 21/00 (2013.01);
Abstract
It is intended to provide a carbon black which can confer reinforcing properties and low exothermicity, which are usually incompatible, as well as excellent abrasion resistance, when mixed with a rubber component, and is suitable for tire tread rubber that is used particularly under severe driving conditions. The present invention provides a carbon black having surface free energy γof 50 to 200 mJ/mdetermined by a reverse-phase gas chromatography analysis method and a strongly acidic group concentration of 0 to 0.115 μmol/m.