Abstract: The invention relates to a rubber composition that is free of zinc or that contains less than 0.5 phr of zinc, which can be used for the manufacture of tires, based on at least: one diene elastomer; one sulphur-based crosslinking system; one inorganic filler as reinforcing filler; one blocked mercaptosilane of general formula I below: (R3O)R2R1—Si—Z—S—C(?O)-A in which: R1 and R2, which are identical or different, represent a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; R3 represents a monovalent hydrocarbon-based group chosen from linear or branched alkyls having from 1 to 4 carbon atoms; A represents hydrogen or a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms.

Abstract: A rubber composition that can be used for the manufacture of tires, based on at least one diene elastomer; one sulphur-based crosslinking system; one inorganic filler as reinforcing filler; one coupling agent of general formula I below: (HO)3-nR1nSi—Z—Sm—R2 wherein in which: R1, which are identical or different, each represent a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; R2 represents a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 30 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms; n is an integer equal to 0, 1 or 2; and m is a number greater than or equal to 2.

Abstract: An organosilane of general formula I below: (HO)2R1Si—Z—Sm—R2 in which: R1, which are identical or different, each represent a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; R2 represents a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 30 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms; and m is a number greater than or equal to 2.

Abstract: The invention relates to a blocked mercaptosilane of general formula I below: (HO)2R1—Si—Z—S—C(?O)-A in which: R1 represents a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; A represents hydrogen or a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms.

Abstract: Rubber composition, especially for a tyre, based on at least one diene elastomer, a reinforcing filler, a crosslinking system and an antioxidant system, wherein the antioxidant system has at least two antioxidants “A” and “B”: A. an N-alkyl-N?-phenyl-para-phenylenediamine corresponding to the formula (I): B. a 4,4?,4?-tris(1,3-dimethylbutylamino)triphenylamine corresponding to the specific formula: wherein R1 represents a linear or branched alkyl group having from 1 to 12 carbon atoms or a cycloalkyl group having from 5 to 8 carbon atoms, the A/B weight ratio being between 1/10 and 5/1.

Abstract: The invention relates to 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 tyres.

Abstract: A rubber composition, devoid of zinc or comprising less than 0.5 phr of zinc and devoid of guanidine derivatives or comprising less than 0.

Abstract: A blocked mercaptosilane of following general formula (I): (HO) R21 Si—Z—S—C (?O)—A in which: the symbols R1, which are identical or different, each represent a monovalent hydrocarbon group chosen from linear or branched alkyls, cycloalkyls or aryls having from 1 to 18 carbon atoms; the symbol A represents hydrogen or a monovalent hydrocarbon group chosen from linear or branched alkyls, cycloalkyls or aryls having from 1 to 18 carbon atoms and linear or branched alkoxyalkyls having from 2 to 8 carbon atoms; the symbol Z represents a divalent bonding group comprising from 1 to 18 carbon atoms.

Abstract: 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, wherein the coupling agent is an azosilane compound of formula (I): (G1)3-a(G2)aSi—Z—NH—C(O)—N?N—C(O)—NH—Z—Si(G1)3-a(G2)a (I) wherein: G1, identical to or different, each represent a monovalent hydrocarbon 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, each represent a hydroxyl group or a monovalent group chosen from branched or unbranched, substituted or unsubstituted alkoxyls having from 1 to 18 carbon atoms, substituted or unsubstituted cycloalkoxyls having from 5 to 18 carbon atoms, Z represents a divalent linking group having from 1 to 18 carbon atoms, a is equal to 1, 2 or 3.

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, between 1 and 20 phr of an epoxide resin and between 1 and 15 phr of an amine-comprising curing agent. The pair formed of epoxide resin with an amine-comprising curing agent advantageously replaces the pair formed of phenollformaldehyde resin, which is a methylene acceptor, with the curing agent(s) HMT or H3M, which are conventional methylene donors. The use of this pair of reactants, epoxide resin and amine-comprising curing agent, makes it possible to obtain rubber compositions exhibiting a greater low-strain stiffness in comparison with conventional rubber compositions, without significantly damaging the hysteresis. Moreover, the combination of a phenolic resin, which is a methylene acceptor, with HMT or H3M, which is a methylene donor, produces formaldehyde during the vulcanization of the rubber composition.

Abstract: Rubber composition, especially for a tire, based on at least one diene elastomer, a reinforcing filler, a crosslinking system and an antioxidant system, wherein said antioxidant system comprises at least two antioxidants “A” and “B”: A. an N-alkyl-N?-phenyl-para-phenylenediamine corresponding to the formula (I): B. a 4,4?,4?-tris(alkylamino)triphenylamine corresponding to the formula (II): in which formulae, R1, R2, R3 and R4, which are identical or different, each represent a linear or branched alkyl group having from 1 to 12 carbon atoms or a cycloalkyl group having from 5 to 8 carbon atoms, the A/B weight ratio being between 0.1 and 5.0.

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

Abstract: Tire belt comprising a rubber composition based on at least one isoprene elastomer, a reinforcing filler, a crosslinking system and an antioxidant agent, characterized in that said antioxidant agent comprises a 4,4?-bis(alkylamino)triphenylamine corresponding to the formula (I): in which R1 and R2, which are identical or different, each represent a linear or branched alkyl group having from 1 to 12 carbon atoms or a cycloalkyl group having from 5 to 8 carbon atoms. Such an antioxidant gives the belt of the invention a better long-term resistance to fatigue and to crack propagation.

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 1,2,4-triazine compounds of formula:

Abstract: The invention relates to a rubber composition that is free of zinc or that contains less than 0.5 phr of zinc, which can be used for the manufacture of tyres, based on at least: one diene elastomer; one sulphur-based crosslinking system; one inorganic filler as reinforcing filler; one blocked mercaptosilane of general formula I below: (HO)3-nR1n—Si—Z—S—C(?O)-A in which: R1, which are identical or different, each represent a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; A represents hydrogen or a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms; n is an integer equal to 0, 1 or 2.

Abstract: Elastomer composition having a self-sealing property which can be used in particular as puncture-resistant layer in an inflatable article, 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. Inflatable article, such as a tire, provided with a puncture-resistant layer comprising a composition according to the invention; the puncture-resistant layer is advantageously used in combination with an airtight layer, for example based on butyl rubber or TPS elastomer, in order to form, in the inflatable article, an airtight and puncture-resistant laminate.

Abstract: A subject-matter of the present invention is a rubber composition intended for the manufacture of tires or of tire semi-finished products, based on at least one isoprene elastomer, an inorganic filler as reinforcing filler and a polyfunctional organosiloxane coupling agent capable of providing the bonding between the reinforcing inorganic filler and the isoprene elastomer, comprising per molecule, grafted to its silicon atoms, on the one hand at least one hydroxyl or hydrolysable functional group allowing it to be grafted to the reinforcing inorganic filler and, on the other hand, at least one group bearing at least one azodicarbonyl functional group —CO—N?N—CO— allowing it to be grafted to the isoprene elastomer.

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: 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, the vulcanization system comprising one or more thiazole compounds of formula:

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: