Tire rubber composition with balanced reinforcement network
AssigneeThe Goodyear Tire & Rubber Company
InventorsRoberto Cerrato Meza, Warren James Busch
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Abstract
A sulfur-curable rubber composition for incorporation into tires comprises, based on 100 parts by weight of elastomer (phr): (A) at least three diene elastomers each being a different rubber material, a first elastomer being characterized by a high molecular weight in a range of from about 300,000 to about 500,000 and a second elastomer being characterized by a molecular weight in the range of from about 250,000 to 350,000; the at least three elastomers each comprising between 25 and 40 phr; and (B) a reinforcement network comprising a balance of carbon black to silica in about a 3:1 to about 4:1 ratio.
Claims20
A sulfur-curable rubber composition comprising, based on 100 parts by weight of elastomer (phr):
- (A) at least three diene elastomers each being a different rubber material, a first elastomer being characterized by a high molecular weight in a range of from about 300,000 to about 500,000 and a second elastomer being characterized by a molecular weight in the range of from about 250,000 to 350,000;
- the at least three elastomers each comprising between 25 and 40 phr;
- and
- (B) a reinforcement network comprising a balance of carbon black to silica in about a 3:1 to about 4:1 ratio.
A tire component formed from a sulfur-curable rubber composition comprising, based on 100 parts by weight of elastomer (phr):
- (A) at least two diene elastomers in a 1:1 ratio and each being a different rubber material, a first elastomer being a polybutadiene characterized by a higher molecular weight than a second elastomer, the second elastomer being a functional or non-functional solution polymerized styrene-butadiene rubber (SSBR);
- (B) a third diene elastomer being a different rubber material than the first two diene elastomers, the third diene elastomer being in a minority amount;
- (C) a reinforcement network comprising a balance of carbon black to silica in about a 3:1 to about 4:1 ratio;
- and
- (D) a plasticizer in less than 5 phr.
Dependencies are inferred from the claim text.