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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 10710409 B1

PDFFull Text
Date of Patent:
Jul. 14, 2020

Filed:

Jan. 11, 2018

Cap tread rubber composition and pneumatic tire

Applicant:

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

Inventors:

Yuka Yokoyama, Kobe, JP;

Suguru Izumo, Kobe, JP;

Assignee:

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

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Andrew J Oyer

Int. Cl.
CPC ...
B60C 1/00 (2006.01); B60C 11/00 (2006.01); C08C 19/22 (2006.01); C08C 19/25 (2006.01); C08C 19/34 (2006.01); C09K 3/22 (2006.01); C08K 3/36 (2006.01); C08K 5/00 (2006.01); C08L 15/00 (2006.01); C08L 57/02 (2006.01); C08L 7/00 (2006.01); C08L 9/00 (2006.01); C08L 9/06 (2006.01);
U.S. Cl.
CPC ...
B60C 1/0016 (2013.01); B60C 1/00 (2013.01); B60C 11/005 (2013.01); C08C 19/22 (2013.01); C08C 19/25 (2013.01); C08C 19/34 (2013.01); C08K 3/36 (2013.01); C08K 5/00 (2013.01); C08L 7/00 (2013.01); C08L 9/00 (2013.01); C08L 9/06 (2013.01); C08L 15/00 (2013.01); B60C 2001/0083 (2013.01); C08L 2205/02 (2013.01); C08L 2205/03 (2013.01);
Abstract

The present invention provides a cap tread rubber composition and a pneumatic tire formed from the rubber composition which are excellent in grip performance and abrasion resistance during high speed running. Provided is a cap tread rubber composition, containing: styrene butadiene rubber and/or polybutadiene rubber; an isoprene-based rubber; a filler; and a plasticizer, the rubber composition containing, based on 100% by mass of a rubber component therein, at least 90% by mass in total of the styrene butadiene rubber and/or polybutadiene rubber and 0.3% to 10% by mass of the isoprene-based rubber, the filler including, based on 100% by mass thereof, at least 80% by mass of silica, the rubber composition containing, per 100 parts by mass of the rubber component, at least 110 parts by mass of the silica and at least 50 parts by mass of the plasticizer.

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