Abstract: A resin-extended elastomer comprises an elastomer which is a synthetic diene elastomer with a number-average molar mass of greater than or equal to 200,000 g/mol and a resin which is a plasticizing hydrocarbon-based resin. A process for obtaining such a resin-extended elastomer and compositions, semi-finished products for tires and tires containing same are also disclosed.

Abstract: A rubber composition based on one or more diene elastomer(s), on at least one reinforcing filler, on at least one coupling agent, on at least one chemical crosslinking system, wherein the reinforcing filler comprises silica in the form of essentially spherical nanoparticles, the specific surface area of this silica ranging from 30 m2/g to 250 m2/g. Also disclosed is a process for producing such a composition and also semi-finished or finished articles comprising at least one such composition.

Abstract: A rubber composition is based on at least 80 phr (parts by weight per hundred parts by weight of elastomer) of a styrene/butadiene elastomer (SBR) referred to as low-Tg SBR, the glass transition temperature (Tg) of which is less than ?60° C.; at least 130 phr of reinforcing filler; at least 110 phr in total of a plasticizing system comprising a hydrocarbon-based resin at a content within a range extending from 70 to 100 phr and a plasticizing oil at a content within a range extending from 10 to 40 phr; and a vulcanization system.

Abstract: A resin-extended elastomer comprises an elastomer which is a synthetic diene elastomer with a number-average molar mass of greater than or equal to 200,000 g/mol and a resin which is a plasticizing hydrocarbon-based resin. A process for obtaining such a resin-extended elastomer and compositions, semi-finished products for tires and tires containing same are also disclosed.

Abstract: A rubber composition is based on at least one predominant vinylaromatic diene elastomer, a reinforcing filler, a crosslinking system and a thermoplastic resin comprising optionally substituted polyphenylene ether units, said resin having a number-average molecular weight (Mn) of less than 6000 g/mol. The rubber composition can be used in semi-finished tire articles and tires.

Abstract: The present invention relates to a tire comprising a tread, a crown with a crown reinforcement, two sidewalls, two beads, a carcass reinforcement anchored to the two beads and extending from one sidewall to the other, in which the tread comprises at least one thermoplastic elastomer, said thermoplastic elastomer being a block copolymer comprising at least one elastomer block of optionally hydrogenated butadiene/styrene random copolymer type and at least one thermoplastic block of styrene type, and the total content of thermoplastic elastomer being within a range varying from 65 to 100 phr (parts by weight per hundred parts of elastomer).

Abstract: A rubber composition based on one or more diene elastomer(s), on at least one reinforcing filler, on at least one coupling agent, on at least one chemical crosslinking system, wherein the reinforcing filler comprises silica in the form of essentially spherical nanoparticles, the specific surface area of this silica ranging from 30 m2/g to 250 m2/g. Also disclosed is a process for producing such a composition and also semi-finished or finished articles comprising at least one such composition.

Abstract: The invention relates to a tyre comprising at least one rubber composition based on at least one diene elastomer, a reinforcing filler, a plasticizing system and a crosslinking system, characterized in that the composition comprises hexagonal boron nitride having a BET specific surface area of greater than or equal to 10 m2/g as reinforcing filler, at a content ranging from 30 to 350 parts per hundred parts of elastomer, phr, and a coupling agent capable of binding the boron nitride to the diene elastomer.

Abstract: Method of manufacturing a tire tread having a plurality of raised elements, each having a contact face intended to come into contact with a ground when the tire is rolling and lateral faces connected to this contact face. The method of manufacture comprises: preparing a green form of the tire; laying a cover layer over all or part of an external surface of the green tire; laying the green tire in a mold; with the mold comprising a blade, using this blade to mold a lateral face of a raised element; vulcanizing the green tire to obtain the tire cutting the cover layer using cutting means belonging to the mold; during the molding of the lateral face driving with the blade a cut part of the cover layer into the green tire so that the lateral face of the raised element is partially or fully covered.

Abstract: A pneumatic object or inflatable article is provided with a gastight elastomer layer. The gastight elastomer layer includes a thermoplastic polyisobutylene block elastomer and hot-melt polymer microdomains based on at least one thermoplastic material.

Abstract: A rubber composition is based on at least 80 phr (parts by weight per hundred parts by weight of elastomer) of a styrene/butadiene elastomer (SBR) referred to as low-Tg SBR, the glass transition temperature (Tg) of which is less than ?60° C.; at least 130 phr of reinforcing filler; at least 110 phr in total of a plasticizing system comprising a hydrocarbon-based resin at a content within a range extending from 70 to 100 phr and a plasticizing oil at a content within a range extending from 10 to 40 phr; and a vulcanization system.

Abstract: A tread for a pneumatic tire includes tread pattern elements and cuts. Each tread pattern element includes lateral faces and a contact face that comes into contact with a road surface when the tire is being driven thereon. A boundary between the contact face and the lateral faces forms at least one edge corner. The cuts are formed as grooves and/or sipes, with the cuts being delimited by opposing lateral faces of the tread pattern elements. Each tread pattern element is formed of at least one rubber compound. When the tread is viewed in cross section in a plane normal to an axis of rotation of the tire and passing through a contact face of a tread pattern element, at least one of the cuts adjacent to that contact face is covered at least in part with a covering layer that contains a woven or nonwoven fiber assembly.

Abstract: A pneumatic object is provided with a layer that is airtight to inflation gases. The layer includes an elastomer composition having at least a thermoplastic elastomer (TPE), as a sole elastomer or as a predominant elastomer by weight, and a hydrocarbon resin. A glass transition temperature of the hydrocarbon resin is above 0° C. The TPE is a copolymer that includes at least a central polyisobutylene block. Optionally, the elastomer composition includes an extender oil. Also optionally, the elastomer composition includes a platy filler selected from a group that includes graphites and phyllosilicates, such as micas, clays, and talcs. The pneumatic object may be an inner tube or a pneumatic tyre for a motor vehicle.

Abstract: A tire includes a tread, a crown with a crown reinforcement, first and second sidewalls, two beads, and a carcass reinforcement anchored to the two beads and extending from the first sidewall to the second sidewall. The tread includes a thermoplastic elastomer that is a block copolymer, which includes at least one elastomer block and at least one thermoplastic block. A total content of the thermoplastic elastomer in the tread is within a range varying from 65 to 100 phr (parts by weight per hundred parts of elastomer).

Abstract: A composite reinforcer that can adhere directly to a diene rubber matrix is usable as a reinforcing element for a pneumatic tire. The composite reinforcer includes at least one reinforcing thread, such as a carbon steel cord. Covering each thread individually or several threads collectively is a layer of a thermoplastic polymer composition. The thermoplastic polymer composition includes at least one thermoplastic polymer have a glass transition temperature that is positive, a poly(p-phenylene ether) (PPE), and a functionalized unsaturated thermoplastic styrene (TPS) elastomer having a glass transition temperature that is negative. The TPS elastomer includes a functional group selected from: an epoxide group, a carboxyl group, an acid anhydride group, and an ester group. A process for manufacturing such a composite reinforcer is presented, as well as a process for producing a rubber article, especially a pneumatic tire, incorporating such a composite reinforcer.

Abstract: A rubber composition is based on at least one predominant vinylaromatic diene elastomer, a reinforcing filler, a crosslinking system and a thermoplastic resin comprising optionally substituted polyphenylene ether units, said resin having a compatibility with said vinylaromatic diene elastomer such that a mixture of said vinylaromatic diene elastomer and said resin creates a composition having less than 10% of its volume in the form of particles greater than 2 micrometres in size. The rubber composition may be used in semi-finished tire articles and tires.

Abstract: A radial tire (1) for a motor vehicle comprises a crown (2) comprising a tread (3) provided with at least a radially outer part (3a) intended to come into contact with the road; two non-stretchable beads (4), two sidewalls (5) connecting the beads (4) to the tread (3), a carcass reinforcement (6) passing into the two sidewalls (5) and anchored in the beads (4); a crown reinforcement or belt (7) positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6); a radially inner elastomer layer (8) referred to as “underlayer”, which is positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6), which comprises at least one thermoplastic elastomer which is a block copolymer comprising at least one elastomer block and at least one thermoplastic block, and which also comprises at least one conductive filler.

Abstract: A radial tire (1) for a motor vehicle comprises a crown (2) comprising a tread (3) provided with at least a radially outer part (3a) intended to come into contact with the road; two non-stretchable beads (4), two sidewalls (5) connecting the beads (4) to the tread (3), a carcass reinforcement (6) passing into the two sidewalls (5) and anchored in the beads (4); a crown reinforcement or belt (7) positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6); a radially inner elastomer layer (8) referred to as “underlayer”, which is positioned circumferentially between the radially outer part (3a) of the tread (3) and the carcass reinforcement (6), which comprises at least one thermoplastic elastomer which is a block copolymer comprising at least one elastomer block and at least one thermoplastic block, and which also comprises at least one magnetic filler.

Abstract: A rubber composition, which can be used for manufacturing tires, is based on one or more diene elastomers, on one or more reinforcing fillers, and on a crosslinking system. The rubber composition includes particles of one or more thermoplastic materials chosen from thermoplastic materials with melting or softening points varying from 80° C. to 300° C. The rubber composition also includes one or more compatibilizing agents chosen from block copolymers that includes at least one diene elastomer block and at least one thermoplastic block compatible with the one or more thermoplastic materials.

Abstract: Composite reinforcer (R-2) that is self-adhesive, by curing, to a diene rubber matrix, which can be used as reinforcing element for a pneumatic tire, comprising: one or more reinforcing thread(s) (20), for example a carbon steel cord; a first layer (21) of a thermoplastic polymer, the glass transition temperature of which is positive, for example a polyamide, covering said thread, individually each thread or collectively several threads; a second layer (22) of a composition comprising a poly(p-phenylene ether) (“PPE”) and a functionalized diene elastomer bearing functional groups selected from epoxide, carboxyl, acid anhydride and acid ester groups, in particular an epoxidized SBR, covering the first layer (21). Process for manufacturing such a composite reinforcer and rubber article or semi-finished product, especially a pneumatic tire, incorporating such a composite reinforcer.