Abstract: There is disclosed a rubber composition comprising: (a) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (b) 1 to 150 phr of a precipitated organosilicon particles having a core and a shell, wherein the core is obtained by the condensation of at least one monomer of the formula: R1—Si(OR2)3  I  where R1 is selected from the group consisting of hydrogen, methyl, ethyl, vinyl, alkoxy having from 1 to 4 carbon atoms, and phenyl; R2 is selected from the group consisting of alkyls having from 1 to 4 carbon atoms and phenyl; and wherein said condensation of said monomer is in the presence of a surfactant; and wherein the shell is obtained by the subsequent addition to the core of a monomer of the formula: R3—Si(OR2)3  II  where R3 is selected from the group consisting of —CH═CH2, —CH2—CH═CH2, &Parenopenst;CH2&Parenclosest;nSH and mixtures thereof; and n is an integer of from 2 to 8.

Abstract: There is disclosed a pneumatic tire having a rubber component comprising a sulfur cured rubber composition composed of, based on 100 parts by weight of rubber (phr): (a) 99 to 50 parts by weight of a first rubber containing olefinic unsaturation; and (b) 1 to 50 parts by weight of a second rubber which is different from said first rubber and which is an elastomeric block copolymer of (1) from 15 to 65 percent by weight, based on the total block copolymer, of butadiene, and (2) from 35 to 85 percent by weight, based on the total block copolymer, of styrene, which block copolymer has: (a) at least two blocks A which have polymerized units of styrene, a glass transition temperature Tg above 25° C.

Abstract: The present invention relates to siloxy containing salts of the formula: wherein each R1 and R2 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms and alkyls having from 1 to 8 carbon atoms; R3 is selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms; each R4 is independently selected from the group consisting of alkylenes and having from 1 to 15 carbon atoms, arylenes alkyl substituted arylenes having from 6 to 10 carbon atoms, —R5—O—R6— and —R5—NH—R7—; R5 and R7 are independently selected from the group consisting of alkylenes having from 1 to 15 carbon atoms, arylenes and alkyl substituted arylenes having from 6 to 10 carbon atoms; R6 is selected from the group consisting of alkylenes having from 1 to 15 carbon atoms, arylenes and alkyl substituted arylenes having from 6 to 10 carbon atoms and alkenylenes having from 2 to 15 carbon atoms; and x is an integer

Abstract: There is disclosed a rubber composition comprising: (A) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (B) 1.5 to 50 phr of a silicon coupled oligomer of the formula: where R1 and 2 are individually selected from the group consisting of where R3 is selected from the group consisting of alkyls having 1 or 4 carbon atoms; w is an integer of from 9 to 149, x is an integer of from 1 to 100, y is an integer of from 1 to 100, and z is an integer of from 1 to 100 with the proviso that the sum total of x, y and z in each R1 and R2 ranges from 3 to 100.

Abstract: An endless power transmission belt comprising (a) a tension section; (b) a compression section; (c) a load-carrying section disposed between the tension section and cushion section; and (d) at least one drive surface having a flocked fabric facing layer bonded to an outer surface of the belt.

Abstract: There is disclosed a rubber composition comprising: (A) 100 parts by weight of at least one rubber containing olefinic unsaturation; and (B) 1.

Abstract: A pneumatic tire having a tread comprised of (a) a diene-based elastomer containing olefinic unsaturation and (b) from 1 to 150 phr of a metal oxide aerogel.

Abstract: There is disclosed a method for the preparation of a diene polymer interpenetrated with a polysiloxane comprising the polymerization of (A) at least one silane monomer of the formula: (B) at least one silane monomer of the formula: (C) at least one diene monomer, said polymerization being conducted in the presence of an anionic base, an inert solvent and a polymerization initiator, wherein each R1 is independently selected from the group consisting of alkyl radicals having from 1 to 4 carbon atoms and aryl radicals having 6 carbon atoms and R2 is selected from the group consisting of where x is an integer of from 1 to 8.

Abstract: The present invention relates to a process for improving the cured adhesion of at least two rubber components which contact each other in a pneumatic tire. The process involves the steps of assembling and vulcanizing a pneumatic tire wherein prior to vulcanization of the pneumatic tire, one of the components is a precured rubber compound and the other is an uncured rubber compound. The process involves using a precured rubber compound comprising from 40 to 100 parts by weight of natural rubber or emulsion-polymerized styrene-butadiene copolymer rubber containing 0.5 to 3 phr of a fatty acid, precipitated silica and no fatty acid other than contained in the natural rubber or emulsion-polymerized styrene-butadiene rubber.

Abstract: The present invention relates to a rubber composition comprising (A) an elastomer containing olefinic unsaturation and (B) 35 to 110 phr of silica filler, wherein said silica filler is comprised of (i) 10 to 100 phr of a first silica having a pore size distribution maximum of the aggregates in the first silica ranging from greater than 55 to 400 nm as determined by mercury porosimetry and an average specific surface area ranging from 60 to 135 m2/g as determined by N2 adsorption; and (ii) 10 to 100 phr of a second silica having a pore size distribution maximum of the aggregates in the second silica ranging from 5 to 50 nm as determined by mercury porosimetry and an average specific surface area ranging from 140 to 250 m2/g as determined by N2 adsorption.

Abstract: There is disclosed an endless power transmission belt having a tension section, a cushion section and a load-carrying section disposed between the tension section and cushion section; and the belt containing a free radically cured elastomeric composition comprising the reaction product of an ethylene alpha olefin elastomer, from 0.1 to 40 parts by weight per 100 parts by weight of total rubber (phr) of an acrylate polybutadiene having a molecular weight (MN) within the range of from about 500 to about 500,000 and from 0.1 to 40 phr of a curative coagent.

Abstract: A rubber composition is provided comprising a diene-based elastomer, a vulcanizing agent, a vulcanizing accelerator and a reinforcement comprising a conical carbon. The conical carbon comprises cones, flat plates, nanotubes and fullerenes. Also provided is a tire having at least one component fabricated from the rubber composition.

Abstract: A pneumatic tire having the apex area around the carcass ply turnup comprised of a rubber having 2.2 to 25 phr of the reaction product of a partially polymerized cashew nutshell oil resin and a methylene donor.

Abstract: An endless power transmission belt having (1) a tension section; (2) a cushion section; and (3) a load-carrying section disposed between said tension section and cushion section; and the belt containing an elastomeric composition comprising (a) 100 parts of a rubber derived from (i) 50 to 100 parts by weight of an ethylene alpha olefin elastomer; and (ii) 0 to 50 parts by weight of a rubber selected from the group consisting of silicone rubber, polychloroprene, epichlorohydrin, acrylonitrile rubber, hydrogenated acrylonitrile rubber, zinc salts of unsaturated carboxylic acid ester grafted hydrogenated nitrile butadiene-elastomer, natural rubber, styrene-butadiene rubber, 1,4-trans-polybutadiene, ethylene-vinyl-acetate copolymer, ethylene methacrylate copolymers and terpolymers, chlorinated polyethylene, chlorosulfonated polyethylene, alkylated chloro sulfonated polyethylene, trans-polyoctenamer, polyacrylic rubber, and mixtures thereof; (b) from 1 to 30 parts by weight per 100 parts by weight of total

Abstract: The present invention relates to siloxy compounds of the formulae wherein R1, R2 and R3 are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms; R4 is selected from the group consisting of alkylene groups having from 1 to 15 carbon atoms and arylene and alkyl substituted arylene groups having from 6 to 10 carbon atoms; R5 is selected from the group consisting of alkyl groups having from 1 to 15 carbon atoms, aryl and alkyl substituted aryl groups having 6 to 10 carbon atoms; x is 3 when M is Al and x is 4 when M is selected from the group consisting of C, Ti, Si and Zr.

Abstract: An endless power transmission belt comprising a tension section; a cushion section; a load-carrying section disposed between the tension section and cushion section; and a fabric layer bonded to the outer surface of the belt, the improvement comprising a coating layer on the fabric layer of a carboxylated acrylonitrile rubber.

Abstract: There is disclosed a method of thermomechanically mixing of a rubber composition containing a fatty acid selected from the group consisting of soya fatty acid, sunflower fatty acid and mixtures thereof.

Abstract: There is disclosed a rubber composition particularly suited for use in tires. The rubber composition is composed of 100 parts by weight of at least one rubber containing olefinic unsaturation; and from 1 to 150 parts per 100 parts by weight of rubber, of a silica having predispersed on the surface of the silica a liquid epoxidized butadiene polymer having a number average molecular weight of from 500 to 10,000.