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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 10294349 B1

PDFFull Text
Date of Patent:
May. 21, 2019

Filed:

Oct. 21, 2014

Rubber composition for tire, pneumatic tire, and method for manufacturing rubber composition for tire

Applicant:

Sumitomo Rubber Industries, Ltd., Kobe-shi, Hyogo, JP;

Inventors:

Tatsuya Miyazaki, Kobe, JP;

Ryuichi Tokimune, Kobe, JP;

Assignee:

SUMITOMO RUBBER INDUSTRIES, LTD., Kobe-Shi, Hyogo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch LLP

Primary Examiner:

Edward J Cain

Int. Cl.
CPC ...
C08K 5/18 (2006.01); B60C 1/00 (2006.01); C08J 3/22 (2006.01); C08K 3/36 (2006.01); C08L 9/00 (2006.01); C08L 71/02 (2006.01); C08K 5/101 (2006.01); C08K 5/11 (2006.01); C08K 13/02 (2006.01); C08L 7/00 (2006.01); C08K 5/103 (2006.01); C08K 5/47 (2006.01);
U.S. Cl.
CPC ...
C08K 5/18 (2013.01); B60C 1/00 (2013.01); B60C 1/0016 (2013.01); B60C 1/0025 (2013.01); C08J 3/22 (2013.01); C08K 3/36 (2013.01); C08K 5/101 (2013.01); C08K 5/103 (2013.01); C08K 5/11 (2013.01); C08K 5/47 (2013.01); C08K 13/02 (2013.01); C08L 7/00 (2013.01); C08L 9/00 (2013.01); C08L 71/02 (2013.01); B60C 2001/005 (2013.01); C08J 2307/00 (2013.01); C08J 2321/00 (2013.01); C08J 2409/00 (2013.01); C08K 2201/006 (2013.01);
Abstract

Provided is a rubber composition for tires which can prevent discoloration and improve ozone resistance while maintaining or improving good elongation at break, and further can be produced with high efficiency. Also provided are a pneumatic tire formed from the same, and a method for producing the same. Included is a rubber composition for tires, including: a rubber component; a phenylenediamine antioxidant; and a masterbatch, the masterbatch containing a specific nonionic surfactant and a silica having a BET value of 40-250 m/g at a mass ratio of 1:5 to 1:0.15, the rubber component containing a diene rubber in an amount of 70-100% by mass per 100% by mass of the rubber component, the rubber composition including, per 100 parts by mass of the rubber component, 1.0-10.0 parts by mass of the phenylenediamine antioxidant and 0.1-5.0 parts by mass of the nonionic surfactant introduced in the form of the masterbatch.

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