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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 10017634 B1

PDFFull Text
Date of Patent:
Jul. 10, 2018

Filed:

Apr. 22, 2016

Pneumatic tire and run-flat tire

Applicant:

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

Inventors:

Sumiko Miyazaki, Kobe, JP;

Kenya Watanabe, Kobe, JP;

Ryo Miyamori, Tokyo, JP;

Assignee:

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

Attorney:

Birch, Stewart, Kolasch & Birch LLP

Primary Examiner:

Sanza L McClendon

Int. Cl.
CPC ...
C08L 9/00 (2006.01); B60C 1/00 (2006.01); C08L 7/00 (2006.01); D01F 2/28 (2006.01); B60C 11/00 (2006.01); B60C 17/00 (2006.01); C08L 9/06 (2006.01); C08L 23/22 (2006.01);
U.S. Cl.
CPC ...
C08L 9/00 (2013.01); B60C 1/0008 (2013.01); B60C 1/0016 (2013.01); B60C 1/0041 (2013.01); B60C 11/0008 (2013.01); B60C 17/00 (2013.01); C08L 7/00 (2013.01); C08L 9/06 (2013.01); C08L 23/22 (2013.01); D01F 2/28 (2013.01); B60C 1/0025 (2013.01); B60C 2001/005 (2013.01); B60C 2001/0033 (2013.01); B60C 2001/0058 (2013.01); B60C 2001/0066 (2013.01); B60C 2001/0083 (2013.01); Y02T 10/862 (2013.01);
Abstract

Provided is a pneumatic tire including a sidewall that has a good balance of excellent handling stability, rolling resistance, and durability and further has excellent flex crack growth resistance. The sidewall is formed from a modified cellulose fiber-containing rubber composition that is allowed to simultaneously achieve excellent rigidity, excellent tensile properties, and low energy loss by improving the dispersibility of the cellulose fiber in rubber. The present invention relates to a pneumatic tire including a sidewall formed from a modified cellulose fiber-containing rubber composition, the modified cellulose fiber-containing rubber composition containing a modified cellulose fiber (A) obtained by adding a C15 or higher cyclic polybasic acid anhydride (a) containing a hydrophobic group to a cellulose fiber through esterification, a dispersing polymer (B) having a softening point of 135° C. or lower, and a rubber component (C).

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