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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 11220135 B1

PDFFull Text
Date of Patent:
Jan. 11, 2022

Filed:

Mar. 01, 2018

Pneumatic tire

Applicant:

Sumitomo Rubber Industries, Ltd., Kobe, JP;

Inventors:

Takuya Horiguchi, Kobe, JP;

Hiroki Nakajima, Kobe, JP;

Assignee:

SUMITOMO RUBBER INDUSTRIES, LTD., Kobe, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Jessica M Roswell

Int. Cl.
CPC ...
B60C 5/14 (2006.01); B60C 1/00 (2006.01); C08L 23/22 (2006.01); C08K 3/04 (2006.01); C08K 3/06 (2006.01); C08K 3/22 (2006.01);
U.S. Cl.
CPC ...
B60C 5/14 (2013.01); B60C 1/0008 (2013.01); B60C 1/0041 (2013.01); C08L 23/22 (2013.01); C08K 3/04 (2013.01); C08K 3/06 (2013.01); C08K 2003/2296 (2013.01);
Abstract

Provide is a pneumatic tire that is excellent in air retention properties and adhesion at the interface between the innerliner and the insulation, particularly in the joint portion. Included is a pneumatic tire including: a carcass; an insulation adjacent to the radially inner side of the carcass; and an innerliner adjacent to the radially inner side of the insulation, the innerliner including an innerliner rubber composition, the innerliner rubber composition containing a polymer component including, based on 100% by mass thereof, 80 to 100% by mass of a butyl-based rubber and containing, per 100 parts by mass of the polymer component, 40 to 70 parts by mass of carbon black, 0.5 to 5.0 parts by mass of zinc oxide, and 0.2 to 5.0 parts by mass of sulfur, the insulation including an insulation rubber composition, the insulation rubber composition containing a polymer component including, based on 100% by mass thereof, 20 to 90% by mass of a butyl-based rubber and 10 to 80% by mass of an isoprene-based rubber and containing, per 100 parts by mass of the polymer component, 40 to 80 parts by mass of carbon black and 0.2 to 5.0 parts by mass of sulfur, the innerliner and insulation rubber compositions having butyl-based rubber contents based on 100% by mass of the polymer component that satisfy the following relationship:

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