To provide a conductive roll for an electrophotographic apparatus that includes a conductive rubber elastic body layer having a lower hardness and lower settling properties than a conventional conductive rubber elastic body layer.

A conductive roll 10 for an electrophotographic apparatus includes a shaft body 12, and a conductive rubber elastic body layer 14 provided on the outer periphery of the shaft body 12, the conductive rubber elastic body layer 14 containing polar rubber, non-polar rubber, and a dispersing agent, wherein the polar rubber is at least one of nitrile rubber, hydrin rubber, and chloroprene rubber, wherein the non-polar rubber is at least one of isoprene rubber, hydrogenated isoprene rubber, and natural rubber, and wherein the dispersing agent is at least one of a polymer containing a block made of a nitrile rubber component and a block made of an isoprene rubber component, modified natural rubber, and modified isoprene rubber.

To provide a conductive roll for an electrophotographic apparatus that includes a conductive rubber elastic body layer having a lower hardness and lower settling properties than a conventional conductive rubber elastic body layer.

A conductive roll 10 for an electrophotographic apparatus includes a shaft body 12, and a conductive rubber elastic body layer 14 provided on the outer periphery of the shaft body 12, the conductive rubber elastic body layer 14 containing polar rubber, non-polar rubber, and a dispersing agent, wherein the polar rubber is at least one of nitrile rubber, hydrin rubber, and chloroprene rubber, wherein the non-polar rubber is at least one of isoprene rubber, hydrogenated isoprene rubber, and natural rubber, and wherein the dispersing agent is at least one of a polymer containing a block made of a nitrile rubber component and a block made of an isoprene rubber component, modified natural rubber, and modified isoprene rubber.

Tires and tire components are provided having improved fire properties, as well as the vulcanizable compositions for making the tires and tire components. A vulcanizable composition is provided that includes at least one vulcanizable polymer, a curative, a halogenated hydrocarbon, and expandable graphite. The tires and tire components have improved properties including one or more of improved flame retardancy, reduced smoke density and/or toxicity, and reduced heat release.

Tires and tire components are provided having improved fire properties, as well as the vulcanizable compositions for making the tires and tire components. A vulcanizable composition is provided that includes at least one vulcanizable polymer, a curative, a halogenated hydrocarbon, and expandable graphite. The tires and tire components have improved properties including one or more of improved flame retardancy, reduced smoke density and/or toxicity, and reduced heat release.

Tires and tire components are provided having improved fire properties, as well as the vulcanizable compositions for making the tires and tire components. A vulcanizable composition is provided that includes at least one vulcanizable polymer, a curative, a halogenated hydrocarbon, and expandable graphite. The tires and tire components have improved properties including one or more of improved flame retardancy, reduced smoke density and/or toxicity, and reduced heat release.

To provide a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit which has a satisfactory oil resistance. A method for producing a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit includes a step for conducting continuous addition or 10 cycles or more of intermittent portionwise addition of the chloroprene monomer after initiation of a polymerization reaction is provided. A rubber composition using a statistical copolymer according to the invention or a vulcanized molded article containing the rubber composition is excellent in terms of oil resistance, mechanical strength, compression set at a low temperature and flex fatigue resistance.

To provide a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit which has a satisfactory oil resistance. A method for producing a statistical copolymer containing a chloroprene monomer unit and an unsaturated nitrile monomer unit includes a step for conducting continuous addition or 10 cycles or more of intermittent portionwise addition of the chloroprene monomer after initiation of a polymerization reaction is provided. A rubber composition using a statistical copolymer according to the invention or a vulcanized molded article containing the rubber composition is excellent in terms of oil resistance, mechanical strength, compression set at a low temperature and flex fatigue resistance.

The invention relates to an article, more particularly an air spring bellows, having a one-layer or multi-layer main body with elastic properties, at least one layer of the main body being made up of a rubber mixture, a carbon black proportion of at least one carbon black, more particularly a total carbon black proportion of all carbon blacks, of the rubber mixture being less than 5 phr. The rubber mixture preferably contains aluminium hydroxide as a reinforcing filler. The rubber mixture can comprise chloroprene rubber as a base polymer.

The invention relates to an article, more particularly an air spring bellows, having a one-layer or multi-layer main body with elastic properties, at least one layer of the main body being made up of a rubber mixture, a carbon black proportion of at least one carbon black, more particularly a total carbon black proportion of all carbon blacks, of the rubber mixture being less than 5 phr. The rubber mixture preferably contains aluminium hydroxide as a reinforcing filler. The rubber mixture can comprise chloroprene rubber as a base polymer.

Provided herein is a protective rubber track shoe for an excavator, which includes a first-stage rubber mix and a second-stage rubber mix. The first-stage rubber mix consists of a natural rubber, a chloroprene rubber, a butadiene rubber, a styrene-butadiene rubber, a tire reclaim rubber, a 120-mesh rubber powder, zinc oxide, stearic acid, an anti-aging agent 3100, an anti-aging agent CTU, paraffin wax, an intermediate super abrasion furnace carbon black and an aromatic oil. The second-stage rubber mix consists of the first-stage rubber mix, sulfur, an accelerator CZ and an auxiliary agent.