A vulcanizable rubber composition comprising (i) a rubber component including a polyisoprene elastomer, (ii) a sulfur-based curative, (iii) zinc oxide, and (iv) a eutectic composition.

Methods for treating the surface of a cured inner liner are disclosed. By use of these methods a treated, cured inner liner is produced which has a lower surface with increased adherability to other materials (e.g., adhesives). Treated, cured inner liners resulting from such methods as well as tires containing the treated inner liners.

Provided is novel polybutadiene having high isotacticity. The polybutadiene has a triad isotacticity (mm) of 72% or more.

The present invention is directed to a rubber composition comprising 80 phr to 100 phr of at least one solution polymerized styrene-butadiene rubber, 0 phr to 20 phr of at least one polybutadiene, 55 phr to 200 phr of a filler, at least 15 phr of oil, wherein the filler to oil ratio by weight is between 3.5:1 and 8.0:1, and wherein the weight average molecular weight (Mw) of the at least one solution polymerized styrene-butadiene rubber is within a range of 400,000 to 1,000,000 g/mol. Moreover, the present invention is directed to a tire comprising such a rubber composition.

The invention is directed to a vulcanizable rubber composition comprising, based on parts by weight per 100 parts by weight elastomer (phr):100 phr of at least one diene-based elastomer; from 1-80 phr of carbon black; from 0 to 100 phr of silica; from 1 to 10 phr of a surface-functionalized carbon allotrope; from 1 to 20 parts by weight of a sulfur-containing organosilane per 100 parts by weight of the silica; and from 0.1 to 10 phr of a tetrazine compound of formula 1

##STR00001##

where X.sup.1 and X.sup.2 each represent a heterocyclic group. The invention also includes a pneumatic tire comprising the vulcanizable rubber composition.

Methods for treating the surface of a cured inner liner are disclosed. By use of these methods a treated, cured inner liner is produced which has a lower surface with increased adherability to other materials (e.g., adhesives). Treated, cured inner liners resulting from such methods as well as tires containing the treated inner liners.

A rubber compound for body ply skim comprising: —a mix of rubber consisting of (i) Epoxidized Natural Rubber acting as polymer base with a cross-linkable unsaturated chain; (ii) Natural Rubber acting as polymer base with a cross-linkable unsaturated chain; (iii) Polyepihalohydrin rubber, —a filler material, and—a vulcanization system; The compound comprises: 70 to 90 phr of said Polyepihalohydrin rubber; 5 to 25 phr of said Epoxidized Natural Rubber (E-NR); and 5 to 25 phr of said Natural Rubber (NR); the phr ratio between E-NR and NR ranging from 0.2 to 5.0.

The present invention is directed to a pneumatic tire comprising a carcass and an innerliner in direct contact with the carcass, the innerliner comprising a film comprising an ethylene vinyl alcohol copolymer; and an adhesive layer disposed between the film and the carcass, the adhesive layer comprising a resorcinol-formaldehyde-latex (RFL) adhesive.

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

The present invention relates to compositions for elastomeric compounds for tyres, comprising monotetrazole compatibilizing agents characterised by precise activation temperatures, tyre components and tyres for vehicle wheels which comprise them. Advantageously, the present monotetrazole compatibilizing agents allow the breaking properties of the compounds to be improved while maintaining a high compatibilisation of the filler.