Abstract: Methods of making antidegradant compounds are disclosed in which a p-phenylenediamine is reacted with a diol to obtain mixtures comprising the antidegradant compounds.

Abstract: Methods of making antidegradant compounds are disclosed in which a p-phenylenediamine is reacted with a dicarbonyl to thereby obtain a diimine, which is reduced to obtain mixtures comprising the antidegradant compound.

Abstract: A method of making antidegradant compounds is disclosed, in which a p-phenylenediamine is reacted with an alpha-hydroxy carbonyl compound to thereby obtain an enediamine, which is reduced to thereby obtain a mixture comprising the antidegradant compound.

Abstract: A vulcanizing composition useful for the vulcanization of vulcanizable formulations is disclosed. The vulcanizing composition includes a vulcanizing agent which in turn includes a cyclododecasulfur compound. A cyclododecasulfur compound characterized by a DSC melt point onset of between 155° C. and 167° C. when measured at a DSC heat rate of 20° C./minute is also disclosed.

Abstract: An elastomeric composition is provided comprising at least one elastomeric compound, at least one vinyl acetal polymer, at least one filler, and optionally at least one coupling agent. A process of making the elastomeric composition is also provided as well as articles comprising the elastomeric composition. In particular, tires comprising the elastomeric composition are provided wherein the handling and processing characteristics are improved while other performance characteristics are retained.

Abstract: An elastomeric composition is provided comprising at least one elastomer, at least one ionomer, at least one filler, and optionally at least one coupling agent. A process of making the elastomeric composition is also provided as well as articles comprising the elastomeric composition. In particular, tires comprising the elastomeric composition are provided wherein the handling and processing characteristics are improved while other performance characteristics are retained.

Abstract: An elastomeric composition is provided comprising at least one elastomer, at least one ionomer, at least one filler, and optionally at least one coupling agent. A process of making the elastomeric composition is also provided as well as articles comprising the elastomeric composition. In particular, tires comprising the elastomeric composition are provided wherein the handling and processing characteristics are improved while other performance characteristics are retained.

Abstract: An elastomeric composition is provided comprising at least one elastomeric compound, at least one vinyl acetal polymer, at least one filler, and optionally at least one coupling agent. A process of making the elastomeric composition is also provided as well as articles comprising the elastomeric composition. In particular, tires comprising the elastomeric composition are provided wherein the handling and processing characteristics are improved while other performance characteristics are retained.

Abstract: Processes for mixing a filler with a rubber blend containing at least one isoprene elastomer and one butadiene elastomer are provided. Preferably, the processes include the steps of: combining elastomers or a blend of elastomers, a carbon black and/or silica filler(s) and a quinone diimine antidegradant in a rubber composition; mixing the rubber composition for a viscosity-reducing effective period of time to reduce the viscosity of the composition; and discharging the mixed composition. The compositions are preferably discharged from the mixing vessel at or near a minimum viscosity occurring at a temperature of about 120-160° C.

Abstract: A vulcanizable elastomeric composition and a method of forming said composition is presented. The method generally comprises the mixing of sulfur and an ultra-accelerator into a mixture of an elastomeric polymer matrix, fillers, and silane coupling agent during the silanization reaction step, prior to the occurrence of vulcanization. The addition of the ultra-accelerator, such as TBzTD, enhances the efficiency of the silanization reaction and forms at least one bond with the elastomeric polymer matrix. The silanization reaction step may comprise multiple mixing substeps in which the ultra-accelerator may be incorporated into the elastomeric composition.

Abstract: Processes for mixing a filler with a rubber blend containing at least one isoprene elastomer and one butadiene elastomer are provided. Preferably, the processes include the steps of: combining elastomers or a blend of elastomers, a carbon black and/or silica filler(s) and a quinone diimine antidegradant in a rubber composition; mixing the rubber composition for a viscosity-reducing effective period of time to reduce the viscosity of the composition; and discharging the mixed composition. The compositions are preferably discharged from the mixing vessel at or near a minimum viscosity occurring at a temperature of about 120-160° C.

Abstract: The invention comprises a composition comprising a combination of carbon black and at least one surface treating agent selected from the group consisting of quinone compounds, quinoneimine compounds and quinonediimine compounds, as well as methods of obtaining the composition and the use of the composition in dispersing carbon black in a natural or synthetic polymer. The composition achieves increased dispersibility and improved mixing characteristics of the carbon black and improved processability of the carbon black containing polymer.

Abstract: The invention comprises a composition comprising a combination of carbon black and at least one surface treating agent selected from the group consisting of quinone compounds, quinoneimine compounds and quinonediimine compounds, as well as methods of obtaining the composition and the use of the composition in dispersing carbon black in a natural or synthetic polymer. The composition achieves increased dispersibility and improved mixing characteristics of the carbon black and improved processability of the carbon black containing polymer.

Abstract: Rubber compositions in which the rubber is a halogenated butyl elastomer are crosslinkable by virtue of containing a crosslinking agent such as zinc oxide and an accelerator which is a salt of an organic thiosulfate.

Abstract: The invention relates to the high temperature mixing of elastomeric material in the presence of a quinone diimine antidegradant and carbon black, prior to vulcanization. By mixing the antidegradant quinone diimine with the elastomer prior to vulcanization, enhanced handling and processing qualities are realized in the vulcanized rubber.

Abstract: Rubber compositions which contain a complex of zinc hexasulfide with an amine, together with a vulcanization accelerator exhibit favorable vulcanization behavior, and their vulcanizates show improved properties.

Abstract: Vulcanizable rubber compositions are disclosed which contain co-activator of vulcanization which is a polymeric amine, that is, a hydrocarbon polymer with pendent alkyl amine groups. The co-activators impart increased rates of vulcanization with little decrease in scorch delay and very little increase in the modulus of the cured compositions. No increase in heat build-up or decrease in flex-fatigue life is shown. Typical polymers forming the backbone of the co-activators include EPDM rubber and polymers from butadiene or isoprene, with optional co-monomers.