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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 10550246 B1

PDFFull Text
Date of Patent:
Feb. 04, 2020

Filed:

Nov. 11, 2015

Rubber composition for tire, and pneumatic tire

Applicant:

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

Inventors:

Naoya Kitamura, Kobe, JP;

Ryuichi Tokimune, Kobe, JP;

Assignee:

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

Attorney:

Birch, Stewart, Kolasch & Birch LLP

Primary Examiner:

Angela C Scott

Int. Cl.
CPC ...
C08L 7/00 (2006.01); C08L 9/00 (2006.01); C08K 5/09 (2006.01); C08K 5/47 (2006.01); C08K 3/04 (2006.01); C08K 5/18 (2006.01); C08L 71/02 (2006.01); C08L 81/04 (2006.01); C08K 3/36 (2006.01); B60C 1/00 (2006.01); C08L 91/06 (2006.01); C08K 3/06 (2006.01); C08K 3/22 (2006.01); C08L 91/00 (2006.01);
U.S. Cl.
CPC ...
C08L 7/00 (2013.01); B60C 1/0025 (2013.01); C08K 3/04 (2013.01); C08K 3/06 (2013.01); C08K 3/22 (2013.01); C08K 3/36 (2013.01); C08K 5/09 (2013.01); C08K 5/18 (2013.01); C08K 5/47 (2013.01); C08L 9/00 (2013.01); C08L 71/02 (2013.01); C08L 81/04 (2013.01); C08L 91/00 (2013.01); C08L 91/06 (2013.01); B60C 2001/005 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2205/035 (2013.01);
Abstract

Provided are: a rubber composition for tires that achieves a balanced improvement in handling stability, crack resistance, ozone resistance, discoloration resistance, tire appearance, fuel economy, tensile strength, and scorch resistance; and a pneumatic tire formed from the rubber composition. The invention relates to a rubber composition for tires containing: a rubber component having a combined content of polybutadiene rubber, natural rubber, and polyisoprene rubber of 90% by mass or more based on 100% by mass of the rubber component; sulfur; and at least one nonionic surfactant selected from the group consisting of a Pluronic nonionic surfactant, and a nonionic surfactant represented by the formula (1) below and/or a nonionic surfactant represented by the formula (2) below, the rubber composition containing, per 100 parts by mass of the rubber component, 2-70 parts by mass of carbon black and 1-5 parts by mass of silica, and being free of silane coupling agents, wherein Rrepresents a C6-C26 hydrocarbon group having an unsaturated bond, and d represents an integer, wherein Rand Rare the same or different and each represent a C6-C26 hydrocarbon group, and e represents an integer.

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