The present invention is directed to a rubber composition comprising 70 phr to 100 phr of at least one styrene butadiene rubber, 0 phr to 30 phr of at least one further diene-based rubber, from 40 phr to 200 phr of at least one filler, at least 5 phr of aluminum hydroxide, and at least 0.5 phr of a rosin based resin. Moreover, the present invention is directed to a tire comprising such a rubber composition.

The present invention is directed to a rubber composition comprising: 70 phr to 100 phr of at least one styrene butadiene rubber, 0 phr to 30 phr of at least one further diene-based rubber, from 40 phr to 200 phr of at least one filler, at least 5 phr of aluminum hydroxide, and at least 10 phr of at least one hydrocarbon resin selected from one or more of DCPD resins, CPD resins, and C5 resins. Furthermore, the present invention is directed to a tire comprising such a rubber composition.

The tire includes a tread that has a contact face of a width TW and is provided with a groove of a depth D. The tread has a center region and a pair of shoulder regions. The shoulder regions each have a shoulder rubber layer of a thickness is made of a shoulder rubber composition. A shear storage modulus G′ of the shoulder rubber composition is less than or equal to 1.0 MPa. The tire also has a cap ply whose cable extends generally in circumferential orientation and is positioned radially inbetween the tread and the ply at least in a region corresponding to the shoulder regions of the tread and the ply. A force F.sub.5% of the cap ply is greater than 900 N per 10 mm of a cap ply width under 5% strain in a direction cable of the cap ply is extending.

An embodiment of the present specification provides a rubber composition for a tire tread, comprising: a rubber polymer; a petroleum resin; and a functionalized processing aid, wherein the functionalized processing aid is a bond of a silane-based compound and a cardanol-derived structure, represented by the following formula 1:

(R.sub.1).sub.3Si—R.sub.2—Z-(E).sub.n  [Formula 1] wherein R.sub.1, R.sub.2, Z, E and n are as defined in the specification, and a method of manufacturing the same.

A rubber composition is based on at least one predominant vinylaromatic diene elastomer, having a vinylaromatic content of less than 10%; from 3 to 50 phr of a thermoplastic resin, denoted PPE resin, comprising optionally substituted polyphenylene ether units, the resin having a number-average molecular weight (Mn) of less than 6000 g/mol; from 5 to 60 phr of silica as predominant reinforcing filler; and a crosslinking system. Also disclosed are rubber articles comprising such a composition and in particular tires.

An elastomeric composition is disclosed. The elastomeric composition includes, per 100 parts by weight of rubber (phr): about 5 to about 30 phr of polybutadiene having a cis-1,4 linkage content of at least 95%; about 60 to 100 phr of a styrene/butadiene copolymer; an antioxidant; a curative agent; about 1 to about 20 phr carbon black; about 50 to 80 phr silica, a silane coupling agent and about 5 to about 30 phr of a polymer is selected from the group consisting of ethylene-propylene-diene terpolymer, butyl rubber, poly(isobutylene-co-para-methylstyrene) and poly(isobutylene-co-para-methylstyrene-co-isoprene) terpolymer. The polymer based on ethylene-propylene-diene terpolymer, butyl rubber, poly(isobutylene-co-para-methylstyrene) and poly(isobutylene-co-para-methylstyrene-co-isoprene) terpolymer may be functionalized.

It could be helpful to provide a rubber composition that can achieve both reinforcement property and low loss property at a high level. In order to solve the aforementioned problems, the disclosure is a rubber composition comprising a rubber component, carbon black, and silica, wherein the silica has a CTAB adsorption specific surface area of 250 m.sup.2/g or more; the silica has a diameter in the form of aggregates (D.sub.CPS) and a primary particle diameter (D.sub.I), as measured by disk centrifugal particle size analysis, that satisfy: 700≥D.sub.CPS.sup.3/D.sub.I.sup.3≥300 (1); the rubber component contains at least one selected from natural rubber and polyisoprene rubber, and at least one selected from modified butadiene rubber and modified styrene butadiene rubber; and the carbon black is contained by a mass ratio of 70% or more with respect to the total mass content of the carbon black and the silica.

A vulcanizate prepared by a method comprising introducing an elastomer, a filler, and a polar polysulfide crosslinking agent to form a masterbatch and introducing a curative to the masterbatch to form a vulcanizable composition. Vulcanizing the composition to graft the polar group from the crosslinking agent onto an elastomer to increase the hydrophilicity of the composition.

Provided is a pneumatic tire having both improved run-flat durability and excellent wet grip properties; the pneumatic tire including a rubber composition used in a tread part, and a rubber support layer having a gauge thickness in a specified range; the rubber composition including specified compounded amounts of natural rubber, a terminal-modified styrene-butadiene rubber, silica, and a thermoplastic resin, wherein the rubber composition is largely strain-dependent for the storage elastic modulus.

The introduction of graphene as an additive in rubber compounds is disclosed. The product shows increased barrier protection for tire sidewalls, with no tradeoffs in other characteristics.