A sulfur-crosslinked rubber mixture, in particular for vehicle tires, and a vehicle tire. The sulfur-crosslinked rubber mixture contains at least the following constituents: at least one diene rubber and 0.5 to 10.0 phr of at least one anti-reversion agent and 2.0 phr or more of at least one para-phenylenediamine and 2.0 phr or more of at least one dihydroquinoline
and wherein the network node spacing of the crosslinked rubber mixture is 4.5 to 10 nm.

An aqueous adhesive for rubber includes rubber latex and an ammonium-salt-based vulcanization acceleration aid. An amount of the ammonium-salt-based vulcanization acceleration aid contained in the aqueous adhesive is preferably not less than 0.01% by weight and not greater than 5.0% by weight in terms of solid content. An aqueous adhesive for a ball includes rubber latex as a main component. A content of an inorganic filler in the aqueous adhesive is not greater than 0.1% by weight in terms of solid content. A ball 2 includes a hollow core 4 obtained by crosslinking a rubber composition that contains a vulcanizing agent. The core 4 is formed of two hemispherical half cores. The two half cores are adhered to each other by using the aqueous adhesive for a ball.

An aqueous adhesive for rubber includes rubber latex and an ammonium-salt-based vulcanization acceleration aid. An amount of the ammonium-salt-based vulcanization acceleration aid contained in the aqueous adhesive is preferably not less than 0.01% by weight and not greater than 5.0% by weight in terms of solid content. An aqueous adhesive for a ball includes rubber latex as a main component. A content of an inorganic filler in the aqueous adhesive is not greater than 0.1% by weight in terms of solid content. A ball 2 includes a hollow core 4 obtained by crosslinking a rubber composition that contains a vulcanizing agent. The core 4 is formed of two hemispherical half cores. The two half cores are adhered to each other by using the aqueous adhesive for a ball.

The present invention relates to a steel cord-rubber composite including a rubber composition and a steel cord, wherein the rubber composition is a rubber composition containing a rubber component, a filler, a thermosetting resin, a methylene donor, a thiuram-based vulcanization accelerator, and a sulfenamide-based vulcanization accelerator; the content of a cobalt compound is 0.01 parts by mass or less; and the steel cord is a steel cord subjected to ternary alloy plating. The steel cord-rubber composite improves not only the adhesiveness of the steel cord-rubber composite, particularly the adhesiveness after hygrothermal aging, but also improves the crack propagation resistance and the low fuel consumption of the pneumatic tire using this steel cord-rubber composite and favorably makes the both compatible with each other.

The aqueous adhesive for a tennis ball includes rubber latex. The rubber latex is a mixture of liquid rubber latex and solid rubber latex. When a solid content in the aqueous adhesive is measured at a temperature of 140° C. by a curelastometer, a torque is not less than 0.26 N.Math.m after 10 minutes from start of heating. The tennis ball includes a seam portion formed of the aqueous adhesive for a tennis ball.

The present invention is in the field of flame retardants and relates to use of sulfenamides as flame retardants, in particular in polymeric substrates.

The present invention is in the field of flame retardants and relates to use of sulfenamides as flame retardants, in particular in polymeric substrates.

The present invention relates to a cross-linkable rubber composition, the cross-linkable rubber composition comprising a natural rubber (NR), a filler, and a resin. The resin is a terpolymer of ethylene, acrylic ester and maleic anhydride and is present in an amount ranging from ≥5 to ≤20 phr.

The present invention relates to a cross-linkable rubber composition, the cross-linkable rubber composition comprising a natural rubber (NR), a filler, and a resin. The resin is a terpolymer of ethylene, acrylic ester and maleic anhydride and is present in an amount ranging from ≥5 to ≤20 phr.

Provided is a fluorosilicone resin and a preparation method thereof. Using pentafluorostyrene as raw material, pentafluorophenethyldimethylchlorosilane is prepared by a hydrosilylation reaction. By means of a polycondensation reaction of the pentafluorophenethyldimethylchlorosilane, trimethylchlorosilane and tetraethyl orthosilicate, a pentafluorophenyl silicone resin is prepared. The preparation method adopts a two-step polycondensation process, which overcomes the disadvantages of a large difference in hydrolysis reactivity between pentafluorophenyldimethylchlorosilane and a copolymerized trialkyl-chlorosilane, and achieves a high yield. The obtained pentafluorophenyl silicone resin has the advantages of superior heat resistance, simple preparation process, low equipment requirements, high availability of raw material, and suitability for mass production. The heat-resistant fluorosilicone resin can be applied in a polymer material, such as a heat-resistant adhesive.