Abstract:
The present invention is directed to a pneumatic tire comprising at least one component, the at least one component comprising a rubber composition, the rubber composition comprising: at least one diene based elastomer; an alkylalkoxysilane of formula I wherein R1 is exclusive of sulfur and is an alkyl group of 1 to 18 carbon atoms or an aryl group of 6 to 18 carbon atoms, and R2, R3 and R4 are independently alkyl of 1 to 8 carbon atoms; and a silicone T resin.
Abstract:
A tread cap composition, in accordance with the principles of the invention, may be a composition resulting from a combination of components including: a conjugated diene-based elastomer; a reinforcing filler; an oil softener; a silane coupling agent; and an ultra high molecular weight polyethylene (“UHMWPE”).
Abstract:
A tire with a rubber containing component compound of, based on 100 parts by weight (phr) of rubber, (A) from 10 to 90 phr of a terpolymer rubber having pendant hydroxyl groups; and (B) from 10 to 90 phr of a rubber containing a nitrile moiety.
Abstract:
This invention relates to a tire having a tread intended for winter performance comprised cis 1,4-polybutadiene rubber (BR) and specialized solution polymerization prepared high vinyl styrene/butadiene rubber (HVS-SBR). Such tire tread is comprised of a compatible rubber blend of at least 40 phr of the BR in combination the HVS-SBR together with reinforcing filler composed of precipitated silica with a low BET nitrogen surface area and, optionally, rubber reinforcing carbon black. A disulfide silane based silica coupler is used to aid in coupling the precipitated silica to the elastomers. Compatibility of the combination of the BR with a relatively low glass transition temperature (Tg) of −100° C. or lower and the HVS-SBR with a relatively high Tg of at least 30° C. or higher, and therefore spaced apart Tg's of at least 70° C. is promoted by the high vinyl content of the HVS-SBR in a range of from about 40 to about 50 percent based upon its polybutadiene portion.
Abstract:
The plasticity of a tread composition may advantageously be increased by incorporating, for example, a relatively small amount of an ultra high molecular weight polyethylene (“UHMWPE”). A tread cap composition, in accordance with the principles of the invention, may be a composition resulting from the combination of components including: a sulfur-vulcanizable elastomer containing olefinic unsaturation; a reinforcing filler; a mineral oil softener; a silane coupling agent; and an ultra high molecular weight polyethylene (“UHMWPE”).