Abstract: The invention is directed to a pneumatic tire comprising a vulcanization rubber composition, the vulcanizable rubber composition comprising: from 30 to 90 phr of a first functionalized styrene-butadiene rubber having a glass transition temperature Tg1 ranging from ?70 to ?50° C.; from 10 to 50 phr of a second functionalized styrene-butadiene rubber having a glass transition temperature Tg2 ranging from ?110 to ?70° C.; wherein Tg2?Tg1 is at least 10° C.; from 0 to 40 phr of at least one additional elastomer; from 50 to 150 phr of silica; from 0 to 50 phr of a hydrocarbon resin; and from 10 to 50 phr of an oil.
Type:
Grant
Filed:
December 16, 2019
Date of Patent:
January 30, 2024
Assignee:
THE GOODYEAR TIRE & RUBBER COMPANY
Inventors:
Teresa Diane Martter, Nihat Ali Isitman, Becky Gerette Rickman, Anthony Joseph Ramic, Karmena Izabela Anyfantaki, Aaron Patrick Murray, Eric Engeldinger, Marc Weydert
Abstract: The present disclosure aims to provide a tire rubber composition and a tire which have good wet grip performance and an excellent ability to reduce deterioration of wet grip performance and abrasion resistance over time. The present disclosure relates to a tire rubber composition which contains one or more rubber components having a combined content of styrene-butadiene rubber and polybutadiene of 90% by mass or more, one or more fillers, and one or more vulcanizing agents, the rubber composition as a whole having a vinyl content of 20 mol % or higher and a trans content of 50 mol % or higher, each based on 100 mol % of the combined amount of the butadiene-based structural units in the butadiene portion of the styrene-butadiene rubber and the polybutadiene.