An article is not pneumatic tyre for a motor vehicle and the article's use are that is suitable as at least a part of a pressurizable container or pipeline. The article includes a first side that is, in use, configured to be exposed to a first environment and a second side that is, in use, configured to be exposed to a second environment. At least a part of the article includes rubber-based material that is configured to restrict fluid permeability and that includes lignin that has been treated by hydrothermal carbonization. The rubber-based material or a coating of the rubber-based material forms at least a part of the first side, and the first side is, in use, configured to be exposed to a higher pressure than the second side. A method is for manufacturing the article.

The present invention relates to a method for chemically adhering a diene rubber to a piezoelectric polymer, the method comprising the steps of: a) providing a piezoelectric polymer having at least one surface, b) providing a rubber component having at least one surface and comprising a sulfur cross-linkable rubber composition, c) introducing oxygen-containing functional groups on the at least one surface of the piezoelectric polymer, d) reacting the oxygen-containing functional groups with a compound comprising thiocyanate groups, and e) contacting the surface of the piezoelectric polymer obtained of step d) with the surface of the rubber component, and cross-linking.

The present invention relates to a vehicle tyre comprising a piezoelectric device, wherein the piezoelectric device comprises a layer of a piezoelectric polymer having first and second opposing sides, and a first and a second layer of conductive rubber provided adjacent to the first and second opposing sides of the layer of piezoelectric polymer.

To provide a rubber composition that suppresses shrinkage after molding of a rubber member disposed between an inner liner and a carcass ply of a pneumatic tire, thereby suppressing peeling between members in a green tire and obtaining a green tire having a stable shape, and a pneumatic tire using the rubber composition. Disclosed is a rubber composition for use in a rubber member disposed between an inner liner and a carcass ply of a pneumatic tire, the composition containing a diene-based rubber and a pyrolytic carbon black.

Rubber components of a tire comprising a diene elastomer and at least 1 phr of reduced graphene oxide nanoparticles having a specific surface area of at least 700 m.sup.2/g, an oxygen content of no more than 6 at %, and a ratio of non-aromaticity to aromaticity I.sub.D/I.sub.G of at least 0.7 as determined by Raman spectroscopy. Methods of preparing such rubber compositions in an internal mixer for achieving good distribution and dispersion are also included.

The present disclosure relates to a rubber composition and a method of preparing the same, the rubber composition comprising a viscosity modifier and a modified polymer having a structure in which a molecular weight regulator is coupled to at least one of both ends of an at least partially hydrogenated or non-hydrogenated petroleum resin. The rubber composition according to the present disclosure has improved processability and thus may replace process oil, and may markedly improve gas impermeability.

The present invention is directed to a pneumatic tire having a tread comprising a vulcanizable rubber composition comprising, based on 100 parts by weight of elastomer (phr), up to 100 phr of a solution polymerized styrene-butadiene rubber; from 5 to 50 phr of a fatty acid monoester of formula 1 ##STR00001##
where R.sup.1 is selected from C1 to C8 linear or branched alkyl, C1 to C8 linear or branched alkenyl, and C2 to C6 linear or branched alkyl substituted with from one to five hydroxyl groups; R.sup.2 is C11 to C21 alkyl or C11 to C21 alkenyl; from 5 to 50 phr of a hydrocarbon resin having a Tg ranging from −40° C. to 20° C.; less than 10 phr of a petroleum-derived oil; and from 50 to 130 phr of silica. optionally, from about 1 to 50 phr carbon black.

In a first aspect of the invention, a pneumatic tire is provided, the tire comprising two spaced apart bead portions, a tread portion, a pair of sidewalls extending radially inward from axially outer edges of the tread portion to join the respective bead portions, the axially outer edges of the tread portion defining a tread width, a carcass, an innerliner covering the carcass and defining a tire cavity, and a metal coated foam material attached to the innerliner within the tire cavity.

A rubber composition exhibiting an improved processability/stiffness compromise is based on at least a diene elastomer, a reinforcing filler, a crosslinking system, between 1 and 30 parts by weight per hundred parts by weight of elastomer, phr, of an epoxy resin and between 1 and 15 phr of a specific amine-comprising hardener comprising in particular at least two primary amine functional groups located on at least one six-membered aromatic ring and at least two Ri radicals, which are identical or different, selected from the group consisting of linear or branched C.sub.1-C.sub.6 alkyl radicals, halogens, and ethers, tertiary amines, thioethers, ketones, esters and amides, substituted by linear or branched C.sub.1-C.sub.6 alkyl radicals, the said ring not comprising a hydrogen atom located in the ortho position with respect to the primary amine functional groups.

A method for manufacturing a composite airtight layer (20) used in the composition of a tire (30) comprises: a film (21) made of thermoplastic material is heated such that the film is able to plastically deform; the film is deformed (120) with the aid of corrugating means, the thickness of the film (21) being in a range from 0.01 to 0.2 mm, and the film having corrugations with a pitch and amplitude chosen in a range from 0.1 to 10 mm so as to give the film a given elongation capacity; the film is cooled such that the corrugated film is no longer able to be plastically deformed; and the corrugated film is coated in a matrix (22) of elastomer material, so as to form a composite airtight layer (20).