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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 9688825 B1

PDFFull Text
Date of Patent:
Jun. 27, 2017

Filed:

Oct. 03, 2011

Method for manufacturing rubber composition

Applicants:

Seiichi Katou, Tokyo, JP;

Satoshi Horie, Tokyo, JP;

Inventors:

Seiichi Katou, Tokyo, JP;

Satoshi Horie, Tokyo, JP;

Assignee:

BRIDGESTONE CORPORATION, Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Hannah Pak

Int. Cl.
CPC ...
C08J 3/20 (2006.01); C08J 3/22 (2006.01); C08K 3/00 (2006.01); C08K 3/04 (2006.01); C08K 3/36 (2006.01); C08K 5/00 (2006.01); C08K 5/31 (2006.01); C08K 5/38 (2006.01); C08K 5/39 (2006.01); C08K 5/40 (2006.01); C08K 5/44 (2006.01); C08K 5/47 (2006.01); C08K 5/548 (2006.01); C08K 9/06 (2006.01); C08K 5/405 (2006.01); C08L 7/00 (2006.01);
U.S. Cl.
CPC ...
C08J 3/22 (2013.01); C08J 3/20 (2013.01); C08K 3/0033 (2013.01); C08K 3/04 (2013.01); C08K 3/36 (2013.01); C08K 5/0025 (2013.01); C08K 5/31 (2013.01); C08K 5/38 (2013.01); C08K 5/39 (2013.01); C08K 5/40 (2013.01); C08K 5/44 (2013.01); C08K 5/47 (2013.01); C08K 5/548 (2013.01); C08K 9/06 (2013.01); C08J 2309/00 (2013.01); C08K 5/405 (2013.01); C08L 7/00 (2013.01);
Abstract

The present invention relates to a method for producing a rubber composition containing a rubber component (A) of at least one selected from natural rubbers and synthetic dienic rubbers, a filler containing an inorganic filler (B), a silane coupling agent (C) and at least one vulcanization promoter (D) selected from guanidines, sulfenamides, thiazoles, thiurams, dithiocarbamate salts, thioureas and xanthate salts, wherein the rubber composition is kneaded in at least three stages, in the first stage (X) of kneading, the rubber component (A), all or a part of the inorganic filler (B), and all or a part of the silane coupling agent (C) are kneaded, then in the stage (Y) on and after the second stage of kneading but before the final stage, the vulcanization promoter (D) is added and kneaded, and in the final stage (Z) of kneading, a vulcanizing agent is added and kneaded.

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