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. 08, 2016
Filed:
Jan. 25, 2007
Applicant:
Hajime Kondo, Tokyo, JP;
Inventor:
Hajime Kondo, Tokyo, JP;
Assignee:
BRIDGESTONE CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60C 1/00 (2006.01); C08C 1/14 (2006.01); C08C 1/15 (2006.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01); C08K 5/01 (2006.01); C08L 7/00 (2006.01);
U.S. Cl.
CPC ...
B60C 1/00 (2013.01); C08C 1/14 (2013.01); C08C 1/15 (2013.01); C08K 3/04 (2013.01); C08K 3/36 (2013.01); C08K 5/01 (2013.01); C08L 7/00 (2013.01);
Abstract
This invention relates to an oil-extended natural rubber capable of improving a tensile strength and a wear resistance of a rubber composition, and more particularly to an oil-extended natural rubber formed by adding an emulsified extension oil to a natural rubber latex and further coagulating and drying them. An amount of the extension oil added is preferable to be within a range of 5-80% by mass based on a rubber component in the natural rubber latex and the oil-extended natural rubber is preferable to have a weight average molecular weight as converted to polystyrene of a rubber component of not less than 1,500,000.