Air maintenance tire

Patent metadata

Field	Value
Publication number	US-9809068-B2
Application number	US-201414550055-A
Country	US
Kind code	B2
Filing date	Nov 21, 2014
Priority date	Dec 13, 2013
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

The present invention is directed to a pneumatic tire comprising a sidewall component, the sidewall component including an air passageway extending at least partially about the circumference of the tire, the air passageway surrounded by and in fluid communication with a surface comprising a rubber composition, the rubber composition comprising: a diene based rubber; from 0.25 to 5 parts by weight, per 100 parts by weight of rubber (phr), of a self-lubrication agent capable of migrating from the rubber composition to the groove surface and disposing on the groove surface as a liquid; and from 1 to 15 parts by weight, per 100 parts by weight of rubber (phr), of a vulcanization modifier for use in the second rubber composition include α,ω-bis(N,N′-dihydrocarbylthiocarbamamoyldithio)alkanes, bismaleimides, and biscitraconimides.

First claim

What is claimed is:

1. A pneumatic tire comprising a sidewall component, the sidewall component including an air passageway extending at least partially about the circumference of the tire, the air passageway surrounded by and in fluid communication with a surface comprising a rubber composition, the rubber composition comprising:
a diene based rubber;
from 0.25 to 5 parts by weight, per 100 parts by weight of rubber (phr), of castor oil; and
from 1 to 15 parts by weight, per 100 parts by weight of rubber (phr), of a vulcanization modifier selected from the group consisting of α,ω-bis(N,N′-dihydrocarbylthiocarbamamoyldithio)alkanes, bismaleimides, and biscitraconimides.

2. The pneumatic tire of claim 1 , wherein the rubber composition comprises from 0.5 to 1.5 phr of the castor oil.

Assignees

• Goodyear Tire & Rubber

Inventors

• Welter Carolin Anna
• Frantzen Andreas
• Frieden Jeannot
• Peronnet-Paquin Anne Therese
• Rodewald Stephan
• Kulig Joseph John
• Du Mingliang

Classifications

• Y10T152/10495

  Pneumatic tire or inner tube · CPC title

• B60C23/12 Primary

  operated by a running wheel · CPC title

• B60C1/0025 Primary

  Compositions of the sidewalls · CPC title

• B60C23/123 Primary

  Elongate peristaltic pumps · CPC title

• B60C23/135

  activated due to tyre deformation · CPC title