IP Library › Granted Patent US 9,387,724
Granted Patent B2
US 9,387,724 · App. 14/283,343 · Granted Jul 12, 2016

Tire

Inventor: Michio Hirayama (Kobe, JP)
Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
B60C1/0016B60C9/2009B60C2011/0033
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Quick Facts
Patent No.
US 9,387,724
App. No.
14/283,343
Granted
Jul 12, 2016
Kind
B2
Abstract

The present invention aims to provide a tire having improved abrasion resistance and appearance, as well as reduced rolling resistance and therefore improved fuel economy. The present invention relates to a tire including a tread, the tread containing 0.9 to 1.5% by mass of a wax, 0.9 to 1.5% by mass of an amine antioxidant, 0.3 to 1.0% by mass of a quinoline antioxidant, and a tread rubber component containing 3% by mass or more of a polybutadiene rubber, the tread having a rubber thickness between a tread groove bottom and an outermost belt-reinforcing layer of 0.1 to 2.0 mm.

Claims (8)

1. A tire, said tire comprising a tread having a belt therein,

the tread containing 0.9 to 1.5% by mass of a wax, 0.9 to 1.5% by mass of an amine antioxidant, 0.3 to 1.0% by mass of a quinoline antioxidant, and a tread rubber component containing 3% by mass or more of a polybutadiene rubber,

the belt being disposed radially outward of a carcass of the tire and extending in a tire circumferential direction, the belt comprising a belt layer comprising a cord forming an angle with the tire circumferential direction of 15 to 30 degrees and at least one belt-reinforcing layer disposed radially outward of the belt layer, said belt-reinforcing layer comprising an organic fiber cord forming an angle with the tire circumferential direction of 0 to 5 degrees, and

the tread having a rubber thickness between a tread groove bottom and an outermost belt-reinforcing layer of 0.1 to 2.0 mm.

2. The tire according to claim 1 ,

wherein the amine antioxidant is N-1,3-dimethylbutyl-N′-phenyl-p-phenylenediamine.

3. The tire according to claim 1 ,

wherein the quinoline antioxidant is a 2,2,4-trimethyl-1,2-dihydroquinoline polymer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 22, 2014
From: HIRAYAMA, MICHIO
To: SUMITOMO RUBBER INDUSTRIES, LTD.
Reel/Frame 032948/0880 →
Priority Claims (1)
JP 2013-128698 · Jun 19, 2013 · national
Continuity (1)
Related Publication 20140373989A1 · Dec 25, 2014