Provided is an electrophotographic electroconductive member including an electroconductive support and an electroconductive layer on the support, an electroconductive member is used, in which an electroconductive layer has a matrix comprising a first rubber, and domains dispersed in the matrix, the domains each comprising a second rubber and an electronic electroconductive agent, and for impedance measured by applying an AC voltage with an amplitude of 1 V to the electroconductive layer while varying frequencies between 1.0×10.sup.−2 Hz to 1.0×10.sup.7 Hz under a specific environment, when a double logarithmic plot with a frequency on an abscissa and an impedance on an ordinate is obtained, a slope on a high frequency side is −0.8 or more and —0.3 or less, and the impedance a low frequency side is from 1.0×10.sup.3 to 1.0×10.sup.7Ω.

Provided is an electrophotographic electroconductive member including an electroconductive support and an electroconductive layer on the support, an electroconductive member is used, in which an electroconductive layer has a matrix comprising a first rubber, and domains dispersed in the matrix, the domains each comprising a second rubber and an electronic electroconductive agent, and for impedance measured by applying an AC voltage with an amplitude of 1 V to the electroconductive layer while varying frequencies between 1.0×10.sup.−2 Hz to 1.0×10.sup.7 Hz under a specific environment, when a double logarithmic plot with a frequency on an abscissa and an impedance on an ordinate is obtained, a slope on a high frequency side is −0.8 or more and —0.3 or less, and the impedance a low frequency side is from 1.0×10.sup.3 to 1.0×10.sup.7Ω.

The present invention relates to a rubber composition for tire applications comprising: rubber polymer(s) comprising at least optionally-functionalized styrene-butadiene rubber (SBR) and at least one rubber selected from polybutadiene rubber (BR), natural rubber (NR), polyisoprene rubber (IR) and mixtures thereof, and at least one ester derived from renewable sources resulting from the esterification of trimer and/or dimer acids having the formula A-(COOH)q, with q being 2 or 3 and A being an acyclic, cyclic or polycyclic, saturated or unsaturated, linear or branched hydrocarbon group having from 3 to 69 carbon atoms, with acyclic or cyclic, saturated or unsaturated, linear or branched alcohols.

A curable rubber composition is provided which includes a high molecular weight diene elastomer; an optional carbon black composition; a silica composition; and a silane terminated copolymer different from the high molecular weight diene elastomer including conjugated dienes and vinyl aromatics as polymerized monomers. The silane terminated copolymer has at least one terminal end modified with at least one silane group and the silane terminated copolymer has a number average molecular weight of from 1,000 g/mol to 40,000 g/mol. A method for producing a rubber composition for use in a tire is provided. The method includes forming a composition by mixing the silane terminated copolymer modified with at least one silane group, a silica composition, a high molecular weight diene elastomer different from the silane terminated copolymer, and optionally a carbon black composition; and curing the composition.

There are provided novel vulcanizable compositions based on optionally fully or partly hydrogenated nitrile rubbers containing epoxy groups, specific basic crosslinkers and crosslinking accelerators, as a result of which the use of conventional crosslinkers, such as sulphur in particular, is no longer required. The vulcanizates producible therefrom possess very good compression sets at room temperature, 100° C. and 150° C., and additionally exhibit high tensile stress combined with good elongation at break.

Disclosed herein are processes for production of a cured polymeric product which processes include using rubber particles to form a rubber layer, applying liquid binder to form a bound layer from the rubber layer, and curing, whereby repetition of steps allows for formation of additional layers and ultimately production of the cured polymeric product.

Disclosed is a rubber composition for footwear. The rubber composition may comprise from 3 phr to 90 phr of a first rubber component, from 5 phr to 100 phr of a second rubber component, from 1 phr to 10 phr of a tackifying resin, from 10 phr to 60 phr of a reinforcing filler component, from 1 phr to about 10 phr of a plasticizer component, from 0.1 phr to 5 phr of a curing component. The rubber composition may exhibit a wet coefficient of friction of from 0.4 to 0.65 when tested in accordance with SATRA TM144, a dry coefficient of friction of from 0.76 to 0.90 when tested in accordance with SATRA TM144, and a DIN abrasion of 140 to 300 when tested in accordance with DIN 53616.

Disclosed is a rubber composition for footwear. The rubber composition may comprise from 3 phr to 90 phr of a first rubber component, from 5 phr to 100 phr of a second rubber component, from 1 phr to 10 phr of a tackifying resin, from 10 phr to 60 phr of a reinforcing filler component, from 1 phr to about 10 phr of a plasticizer component, from 0.1 phr to 5 phr of a curing component. The rubber composition may exhibit a wet coefficient of friction of from 0.4 to 0.65 when tested in accordance with SATRA TM144, a dry coefficient of friction of from 0.76 to 0.90 when tested in accordance with SATRA TM144, and a DIN abrasion of 140 to 300 when tested in accordance with DIN 53616.

Disclosed is a rubber composition for footwear. The rubber composition may comprise from 3 phr to 90 phr of a first rubber component, from 5 phr to 100 phr of a second rubber component, from 1 phr to 10 phr of a tackifying resin, from 10 phr to 60 phr of a reinforcing filler component, from 1 phr to about 10 phr of a plasticizer component, from 0.1 phr to 5 phr of a curing component. The rubber composition may exhibit a wet coefficient of friction of from 0.4 to 0.65 when tested in accordance with SATRA TM144, a dry coefficient of friction of from 0.76 to 0.90 when tested in accordance with SATRA TM144, and a DIN abrasion of 140 to 300 when tested in accordance with DIN 53616.

The present invention is directed to the use of modified vegetable oils in rubber compositions and in tires.