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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 10632788 B1

PDFFull Text
Date of Patent:
Apr. 28, 2020

Filed:

Apr. 11, 2016

Rubber composition and pneumatic tire

Applicant:

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

Inventor:

Tatsuya Miyazaki, Kobe, JP;

Assignee:

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

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Vickey Nerangis

Int. Cl.
CPC ...
B60C 1/00 (2006.01); C08K 5/10 (2006.01); C08K 3/06 (2006.01); C08K 5/521 (2006.01); C08L 33/00 (2006.01); C08L 101/00 (2006.01); C08L 15/00 (2006.01); C08C 19/44 (2006.01); C08L 21/00 (2006.01); C08K 5/12 (2006.01); C08K 5/52 (2006.01); C08K 5/092 (2006.01); C08L 33/08 (2006.01); C08L 33/20 (2006.01);
U.S. Cl.
CPC ...
B60C 1/0016 (2013.01); B60C 1/00 (2013.01); C08C 19/44 (2013.01); C08K 3/06 (2013.01); C08K 5/521 (2013.01); C08L 15/00 (2013.01); C08L 21/00 (2013.01); C08L 33/00 (2013.01); C08L 101/00 (2013.01); C08K 5/092 (2013.01); C08K 5/10 (2013.01); C08K 5/12 (2013.01); C08K 5/52 (2013.01); C08L 33/08 (2013.01); C08L 33/20 (2013.01);
Abstract

Provided are a rubber composition that achieves a balanced improvement in grip performance during the initial to late phases of running and abrasion resistance, and a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition containing a rubber component, sulfur, and a molten mixture of a solid resin and a plasticizer, the solid resin having an SP value of 9.2 to 13 and/or a softening point of 130° C. or higher, the plasticizer including at least one compound selected from the group consisting of phosphoric acid esters, phthalic acid esters, aliphatic polybasic acid esters, trimellitic acid esters, acetic acid esters, and ricinoleic acid esters, the solid resin being present in an amount of 1 part by mass or more per 100 parts by mass of the rubber component.

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