A resin composition including: a magnetic fluid that includes magnetic particles, a dispersant, and a dispersion medium; and a resin or precursor thereof that includes, in a molecule thereof, at least one partial structure selected from the group consisting of a diene skeleton, a silicone skeleton, a urethane skeleton, a 4- to 7-membered ring lactone skeleton, an alkyl group having from 6 to 30 carbon atoms and an alkylene group having from 6 to 30 carbon atoms, a production method thereof, a resin composition molded body obtained by using the resin composition, and a production method thereof.

A method for producing a rubber composition include a mixing step, a drying step, and a dispersion step. In the mixing step, an aqueous solution that includes at least one of oxycellulose fibers and cellulose nanofibers is mixed with rubber latex to obtain a first mixture. In the drying step, the first mixture is dried to obtain a second mixture. In the dispersion step, the second mixture is tight-milled using an open roll to obtain a rubber composition. The rubber composition does not include an aggregate that includes at least one of the oxycellulose fibers and the cellulose nanofibers, and has a diameter of 0.1 mm or more.

The dynamic fatigue and hysteresis performances of fiber reinforced rubber compounds are compared using different plasticizers. Fiber reinforced rubber compounds including a non-linear functionalized fatty acid ester, preferably a trimellitate, and more preferably Tris (2-Ethylhexyl) Trimellitate (TOTM) are shown to demonstrate greatly improved dynamic fatigue and hysteretic performance as compared to reference fiber reinforced rubber compounds including conventional reference plasticizers such as Di-isodecyl phthalate (DIDP).

A method for producing a nitrile group-containing copolymer rubber including copolymerizing a monomer mixture containing an α,β-ethylenically unsaturated nitrile monomer and a conjugated diene monomer, in which the copolymer has a Mooney viscosity (ML1+4, 100° C.) in a range of 30 to 60 at a time point when a polymerization conversion rate is 60%, the copolymerization is carried out until the polymerization conversion rate reaches 85% or more, and the obtained nitrile group-containing copolymer rubber has a Mooney viscosity (ML1+4, 100° C.) of 85 to 150.

A pre-dispersant composition includes a hydrogenated nitrile-butadiene rubber and an amide-based dispersion medium, wherein viscosity is in a range of 70 cPs to 3,000 cPs when measured with a Brookfield viscometer at 25° C., and a moisture content is 0.9 wt % or less. An electrode slurry composition including the pre-dispersant composition, and an electrode for a secondary battery and a secondary battery which are prepared by using the electrode slurry composition are also provided.

A rubber composition includes a carboxyl group-containing nitrile rubber of which iodine value is 120 or less, a polyetherester plasticizer, and a metallic compound, wherein an amount of stearic acid adsorbed by the metallic compound is 80 mg/g or more and 300 mg/g or less.

The present invention relates to vulcanisates comprising hydrogenated nitrile rubber (HNBR) and at least one polycyclic aromatic hydrocarbon (PAH), and to the use thereof as belts, gaskets or hoses.

The present invention relates to vulcanisates comprising hydrogenated nitrile rubber (HNBR) and at least one polycyclic aromatic hydrocarbon (PAH), and to the use thereof as belts, gaskets or hoses.

A method for producing a rubber-plastic composite, including the steps of (a) shaping an unvulcanized elastomer, (b) partially vulcanizing the shaped elastomer at a temperature of at least 140° C. up to a degree of vulcanization in the range from 10% to 40%, (c) cooling the partially vulcanized elastomer to a temperature of less than 100° C. within less than 20 minutes, (d) overmolding the partially vulcanized elastomer with a plastic, and (e) heat treating the partially vulcanized elastomer overmolded with a plastic at a temperature in the range from 100° C. to 170° C. for a duration of from 5 minutes to 5 hours to complete the vulcanization and form a rubber-plastic composite. The method further relates to a rubber-plastic composite obtainable by the method according to the invention and also to a shoe comprising the rubber-plastic composite obtainable by the method according to the invention.

Disclosed are a diaphragm for a sound generating device and a sound generating device. The vibration diaphragm comprises at least one elastomer layer, wherein the elastomer layer is made of a hydrogenated nitrile butadiene rubber polymer; and the hydrogenated nitrile butadiene rubber polymer comprises acrylonitrile blocks, content of the acrylonitrile blocks in the hydrogenated nitrile butadiene rubber polymer ranging from 10 wt % to 70 wt %, a vulcanizing agent is added into the hydrogenated nitrile butadiene rubber polymer, and content of the vulcanizing agent is 1% to 15% of total content of the hydrogenated nitrile butadiene rubber polymer. The diaphragm of the present disclosure has excellent resilience, maintains high elasticity in a low-temperature environment and is capable of long-time working in a high-temperature environment, therefore enabling the sound generating device to be applied in an extremely severe environment while keeping its acoustic performance in an excellent state.