Abstract: Airplane tire tread (2), having an axial width L, comprises a middle part (3) having an axial width LC at least equal to 50% and at most equal to 80% of L and composed of a middle rubber composition, and two lateral parts (41, 42), positioned axially on either side of the middle part (3), each having an axial width (LS1, LS2) between 10% and 25% of L and each composed of a lateral rubber composition. The middle rubber composition comprises at least 50 phr of a first diene elastomer, a reinforcing filler and a crosslinking system, which first diene elastomer comprises ethylene units and diene units comprising a carbon-carbon double bond, which units are distributed randomly within the first diene elastomer, the ethylene units representing at least 50 mol % of all the monomer units of the first diene elastomer.

Abstract: A tire tread comprises a composition based on at least an elastomer matrix comprising a polyisoprene and an unsaturated thermoplastic styrene elastomer which represents at most 50% by weight of the elastomer matrix, a reinforcing filler and a crosslinking system. The unsaturated thermoplastic styrene elastomer comprises at least one rigid styrene segment and at least one flexible isoprene segment, which at least one flexible isoprene segment has a glass transition temperature of less than ?20° C. Such a tread exhibits an improved resistance to crack propagation.

Abstract: Process for the manufacture of an elastomer composition having a self-sealing property which is based on at least (phr meaning parts by weight per 100 parts of solid elastomer): a solid unsaturated diene elastomer; between 30 and 90 phr of a hydrocarbon resin; from 0 to less than 30 phr of filler; between 0.5 and 15 phr of thiuram polysulphide, in which, during a first stage or stage (a), a masterbatch comprising at least the solid unsaturated diene elastomer and between 30 and 90 phr of a hydrocarbon resin is prepared by mixing these various components in a mixer at a “hot compounding” temperature or up to a “hot compounding” temperature which is greater than the softening temperature of the hydrocarbon resin.

Abstract: An elastomeric laminate is provided. The elastomeric laminate comprises a layer A consisting of a diene rubber composition, a layer B comprising a highly unsaturated diene elastomer B, n layers Ci arranged between the layer A and the layer B, n being an integer?2, i being an integer ranging from 1 to n, the layer C1 being arranged between the layer A and the layer C2, the layer Cn being arranged between the layer B and the layer Cn?1, the layer Ci being arranged between the layer Ci?1 and the layer Ci+1 for values of i ranging from 2 to n?1 when n>2. Such a laminate has good resistance to separation of the layers which constitute it.

Abstract: An elastomer laminate comprising three layers is provided. The first layer consists of a diene rubber composition comprising a first elastomer matrix, the second layer consists of a diene rubber composition comprising a second elastomer matrix, which second elastomer matrix comprises a second elastomer comprising ethylene units and diene units comprising a carbon-carbon double bond, which units are randomly distributed within the second elastomer, and the third layer consists of a diene rubber composition comprising a third diene elastomer having a content by weight of diene units of greater than 50% The second layer is arranged between the first layer and the third layer. Such a laminate has good resistance to separation of the layers which constitute it.

Abstract: An elastomer laminate comprising three layers is provided. The first layer consists of a diene rubber composition comprising a first elastomer matrix. The second layer consists of a diene rubber composition comprising a second elastomer matrix, which second elastomer matrix comprises a second terpolymeric elastomer of ethylene, of an ?-olefin and of a non-conjugated diene and contains more than 10% by weight of diene units. The third layer consists of a diene rubber composition comprising a third diene elastomer having a content by weight of diene units of greater than 50%. The second layer is arranged between the first layer and the third layer. Such a laminate has good resistance to separation of the layers which constitute it.

Abstract: The present invention relates to an aircraft tire, the tread of which comprises a rubber composition based on at least one first diene elastomer, a reinforcing filler and a crosslinking system, which first diene elastomer is a terpolymer of ethylene, of an ?-olefin and of a non-conjugated diene. Such a tire exhibits a performance on landing which is greatly improved, in particular with regard to the wear resistance at very high speeds.

Abstract: The present invention relates to an aircraft tire, the tread of which comprises a rubber composition based on at least one first diene elastomer, a reinforcing filler and a crosslinking system, which first diene elastomer comprises ethylene units and diene units comprising a carbon-carbon double bond, which units are distributed randomly within the first diene elastomer, the ethylene units representing at least 50 mol % of the combined monomer units of the first diene elastomer. Such a tire exhibits a performance on landing which is greatly improved, in particular with regard to the wear resistance at very high speeds.

Abstract: A reinforced rubber composition based at least on an elastomeric matrix comprising natural rubber, on a reinforcing filler and on a polyaldimine compound of general formula (I), in which the R1, R2 and A elements are variable groups. This composition is intended in particular for the manufacture of semi-finished products for tires.

Abstract: The invention relates to a tire rubber composition based on at least one diene elastomer, an inorganic filler as reinforcing filler, a coupling agent providing the bonding between the inorganic filler and the diene elastomer, characterized in that the coupling agent is an azosilane compound of following formula (I): (G1)3-a(G2)aSi—Z—NH—C(O)—N?N—C(O)—NH—Z—Si(G1)3-a(G2)a??(I) in which: G1, identical to or different from one another, each represent a monovalent hydrocarbon-based group chosen from branched or unbranched, substituted or unsubstituted alkyls, having from 1 to 18 carbon atoms, substituted or unsubstituted cycloalkyls or aryls, having from 5 to 18 carbon atoms, G2, identical to or different from one another, each represent a hydroxyl group or a monovalent group in the form (G3)n-OG1 in which G3 is a divalent linking group having from 1 to 18 carbon atoms and comprising one or more heteroatoms chosen from O, S, Si and N, n being a number equal to or higher than 0 and less than or equal to 18, Z r

Abstract: Reinforced rubber composition based on, exhibiting a lesser hysteresis degradation over time, based on at least (a) an elastomeric matrix predominantly based on natural rubber, (b) a reinforcing filler and (c) a specific polyimine compound in a content of between 6 and 20 mmol per 100 g of elastomer. This rubber composition is intended, for example, for the manufacture of a semi-finished rubber product intended for the tyres of motor vehicles.

Abstract: A tire tread comprises a composition based on at least an elastomer matrix comprising a polyisoprene and an unsaturated thermoplastic styrene elastomer which represents at most 50% by weight of the elastomer matrix, a reinforcing filler and a crosslinking system. The unsaturated thermoplastic styrene elastomer comprises at least one rigid styrene segment and at least one flexible isoprene segment, which at least one flexible isoprene segment has a glass transition temperature of less than ?20° C. Such a tread exhibits an improved resistance to crack propagation.

Abstract: The tread of a tire for vehicles which are intended to bear heavy loads comprises a composition based on at least an elastomer matrix comprising a first diene elastomer and a thermoplastic styrene elastomer which represents at most 50% by weight of the elastomer matrix, a reinforcing filler which comprises from 20 to 50 phr of a silica, which silica represents at least 50% by weight of the reinforcing filler which varies within a range extending from 25 to 60 phr, a coupling agent and a crosslinking system. The first diene elastomer is chosen from the group consisting of polybutadienes, butadiene copolymers and mixtures thereof. The thermoplastic styrene elastomer comprises at least one rigid styrene segment and at least one flexible diene segment, which at least one flexible diene segment comprises at least 20% by weight of conjugated diene units, it being possible for the conjugated diene units to be all or in part hydrogenated.

Abstract: The invention relates to a tire comprising at least one rubber composition based on at least one diene elastomer, one reinforcing filler, one chemical crosslinking agent and one modifying agent, chosen from the compounds of following formula (I): where R denotes a unit comprising at least one reactive group, R1 denotes hydrogen, R2 denotes an alkylene radical comprising from 2 to 8 carbon atoms and optionally one or more heteroatoms chosen from S, N, O or Si, A denotes an oxygen or sulphur atom or an ?NH group, preferably an oxygen atom.

Abstract: A rubber composition for the manufacture of tires, based on one or more diene elastomers, on one or more reinforcing fillers and on a vulcanization system, characterized in that the said vulcanization system comprises one or more thiadiazole compounds of formula:

Abstract: A heavy-duty vehicle tire comprising a tread consisting of a crosslinked rubber composition comprising a reinforcing filler of siliceous type and a synthetic polyisoprene modified by grafting with a compound comprising at least one group Q, and at least one group A, which are joined to one another by at least one and preferably one “spacer” group Sp, in which: Q comprises a dipole containing at least one and preferably one nitrogen atom, A comprises an associative group comprising at least one nitrogen atom, Sp is an atom or group of atoms forming a bond between Q and A. The heavy-duty vehicle tire according to the invention has a satisfactorily improved rolling resistance/wear resistance compromise.

Abstract: A rubber composition which can be used in particular in tires, based on at least one diene elastomer, one reinforcing filler, one crosslinking system, one phenolic resin and one polyaldehyde. The use of a polyaldehyde makes it possible to advantageously replace conventional methylene donors while preventing the production of formaldehyde during the vulcanization of the rubber compositions and thus to limit the environmental impact of these compounds. Furthermore, these polyaldehyde compounds make it possible not only to obtain rubber compositions exhibiting the same low-strain stiffness as conventional rubber compositions using HMT or H3M methylene donors but also, surprisingly, to greatly improve the fatigue strength of the rubber compositions and thus the endurance of the tires.

Abstract: A rubber composition for the manufacture of tires, based on a blend of at least one diene elastomer chosen from natural rubber and synthetic polyisoprene and of one or more diene elastomers chosen from the group consisting of polybutadienes, butadiene copolymers and isoprene copolymers, on one or more reinforcing fillers and on a vulcanization system, the said vulcanization system comprising one or more thiazoline compounds of formula:

Abstract: Tyre and rubber composition for tyre, based on at least one isoprene elastomer (for example natural rubber), an inorganic filler as reinforcing filler (for example silica) and a coupling system which provides the bonding between the said reinforcing inorganic filler and the isoprene elastomer, the said coupling system comprising, in combination: as first coupling agent, a silane sulphide compound; as second coupling agent, an at least bifunctional organosilicon compound (for example an organosilane or an organosiloxane) which can be grafted to the elastomer by means of an azodicarbonyl functional group (—CO—N?N—CO—).

Abstract: Reinforced rubber composition, exhibiting improved hysteresis, based on at least (a) an elastomeric matrix predominantly based on natural rubber, (b) a reinforcing filler and (c) a specific polyimine compound in a small proportion, preferably ranging from 1 to 5 mmol per 100 g of elastomer. This rubber composition is intended, for example, for the manufacture of a semi-finished rubber product intended for the tires of motor vehicles.