Abstract: A pneumatic rubber tire having a rubber sidewall composition containing trans 1,4-polybutadiene rubber and at least one additional rubber.

Abstract: There is disclosed a method for adhering rubber to reinforcing materials which comprises embedding a textile fiber or metal reinforcing material in a vulcanizable rubber composition comprising rubber, a vulcanizing agent, reinforcement, a methylene donor, a methylene acceptor and a maleic anhydride functionalized triblock copolymer having polystyrene endblocks and poly-(ethylene/butylene) midblocks.

Abstract: The invention relates to a method of preparing a sulfur curable rubber composition by first forming a pre-blend of polyoctenamer and silica and then blending the pre-blend with at least one additional sulfur curable rubber. The invention also relates to a pneumatic rubber tire having a sulfur cured rubber tread comprised of the aforesaid rubber composition.

Abstract: The present invention relates to a rubber stock containing 0.1 to 10.0 phr of phenoxyacetic acid. Addition of the phenoxyacetic acid to a rubber stock increases the low strain stiffness properties of the rubber stock and results in increased treadwear when the stock is used in tread stocks. The phenoxyacetic acid may also be used in a rubber stock as a methylene acceptor or resorcinol replacement. In addition, the phenoxyacetic acid functions as a silica coupling agent and provides lower viscosities for processing the rubber stock compared to rubber stocks containing conventional silane coupling agents.

Abstract: The present invention relates to a sulfur cured rubber composition particularly suited for use in tire treads and carcass ply compounds. The sulfur cured rubber composition is composed of, based on 100 parts by weight of rubber, from about 5 to 95 parts by weight of epoxidized rubber; from about 5 to 85 parts of a silica filler; from about 0.5 to 8.5 parts by weight of a silica coupling agent; and 95 to 5 parts by weight of a rubber selected from the group consisting of medium vinyl polybutadiene, styrene-butadiene rubber, synthetic cis-1,4-polyisoprene, synthetic 3,4-polyisoprene, natural rubber, cis-polybutadiene, styrene-isoprene rubber, styrene-isoprene-butadiene rubber, acrylonitrile-butadiene rubber and mixtures thereof.

Abstract: A pneumatic rubber tire having a rubber sidewall composition containing trans 1,4-polybutadiene rubber and at least one additional rubber.

Abstract: A pneumatic tire is provided having good rolling resistance properties without sacrificing traction. The tire has a tread that contains 2 to 15 phr thermoplastic reinforcing polymer as a replacement for 5 to 25 phr carbon black.

Abstract: The present invention relates to polymeric alloys which comprise the reaction product of a mixture of:(a) a polyester resin produced from the precondensation reaction of a diol and a dicarboxylic compound, said polyester subsequently condensed and having an intrinsic viscosity from about 0.13 to about 0.35 dl/g, a glass transition temperature of at least 50.degree. C., an acid number from about 5 to 50;(b) at least one polyepoxide having at least two epoxy groups per molecule; and(c) an unvulcanized rubber.

Abstract: The present invention relates to a pneumatic tire sidewall and to elastomeric compositions useful therefor. The elastomeric compositions are comprised of:(a) natural rubber, polybutadiene, or mixtures thereof;(b) from about 1.0 to 5.0 phr of a precipitated silica filler having a BET surface area of between 100 and 250 square meters per gram and a pH of from 4.0 to 6.5;(c) from about 1.5 to 10.0 phr of an antidegradant selected from the group consisting of amines, phenolics and mixtures thereof.

Abstract: The present invention relates to the use of a mixture of alkyl (C.sub.6 -C.sub.18) esters of rosin acids which are useful as a total or partial replacement for conventional waxes and diamine antidegradants in rubber formulations. Addition of the mixture of alkyl (C.sub.6 -C.sub.18) esters of rosin acid improve the weathering resistance of cured rubber compositions.