Abstract: A cross-linkable or cross-linked rubber composition which is usable to constitute a tire tread having improved wear resistance, to such a tread and to a tire incorporating this tread. The rubber composition is particularly applicable to tires of passenger-vehicle type. The rubber composition includes a plasticizing resin of number-average molecular weight of from 400 to 2000 g/mol, the resin containing units resulting from the polymerization of vinylcyclohexene.

Abstract: The present invention relates to a cross-linkable or cross-linked rubber composition usable in a tread of a tire, and to a tire incorporating this tread. A rubber composition according to the invention is based on at least one diene elastomer, and a plasticizer comprising a glycerol oleic acid triester, said plasticizer comprises: one or more synthetic and/or natural compounds not extracted from petroleum in a mass fraction of from 45% to 100%, said compounds comprising at least one glycerol fatty acid triester, and the fatty acid(s) as a whole comprise oleic acid in a mass fraction equal to or greater than 60%, and one or more paraffinic, aromatic or naphthenic type plasticizing oils extracted from petroleum in a mass fraction of from 55% to 0%. The invention applies in particular to tires of passenger-vehicle type.

Abstract: The present invention relates to a cross-linkable or cross-linked rubber composition which is usable to constitute a tire tread having improved wear resistance, to such a tread and to a tire incorporating this tread. A rubber composition according to the invention comprises a diene elastomer of a number-average molecular weight Mn of less than 2000 g/mol which has a glass transition temperature Tg of greater than ?25° C., and it is such that said elastomer comprises one or more units resulting from the polymerisation of a vinylaromatic monomer, such as styrene. The invention applies in particular to tires of passenger-vehicle type.

Abstract: The invention relates to a cross-linked rubber composition for a tire tread having a Shore A hardness greater than 45 and less than 57, measured in accordance with Standard ASTM D 2240, wherein the composition comprises greater than 25 phr and up to 100 phr, of one or more diene elastomers each having a temperature Tg of between ?75° C. and ?40° C., less than 75 phr and down to 0 phr, of one or more diene elastomers each having a temperature Tg of between ?110° C. and ?75° C., from 5 phr to 35 phr, of at least one hydrocarbon plasticizing resin miscible in said elastomer(s), said resin having a Tg of between 10° C. and 150° C. and a molecular weight Mn of between 400 and 2000 g/mol, and from 5 phr to 35 phr of at least one synthetic or natural plasticizing compound which comprises at least one glycerol fatty acid triester, wherein an aggregate constituted by the fatty acid(s) comprises oleic acid in a mass fraction equal to or greater than 60%.

Abstract: A cross-linkable or cross-linked rubber composition usable to constitute a tire tread having improved wear resistance, to such a tread and to a tire incorporating this tread. The composition is particularly applicable to tires of passenger-vehicle type. The rubber composition includes a plasticizing resin of number-average molecular weight of from 400 to 2000 g/mol, the resin having units resulting from the polymerization of a monocyclic or bicyclic unsaturated terpene, in a mass fraction of from 70% to 100%, and having a glass transition temperature greater than 50° C. and less than 120° C.

Abstract: A cross-linkable or cross-linked rubber composition which is usable to constitute a tire tread having improved wear resistance, to such a tread and to a tire incorporating this tread. The rubber composition is particularly applicable to tires of passenger-vehicle type. The rubber composition includes a plasticizing resin of number-average molecular weight of from 400 to 2000 g/mol, the resin containing units resulting from the polymerization of vinylcyclohexene.

Abstract: The present invention relates to a cross-linkable or cross-linked rubber composition which is usable to constitute a tire tread having improved wear resistance, to such a tread and to a tire incorporating this tread. A rubber composition according to the invention comprises a diene elastomer of a number-average molecular weight Mn of less than 2000 g/mol which has a glass transition temperature Tg of greater than ?25° C., and it is such that said elastomer comprises one or more units resulting from the polymerisation of a vinylaromatic monomer, such as styrene. The invention applies in particular to tires of passenger-vehicle type.

Abstract: A cross-linkable or cross-linked rubber composition usable to constitute a tire tread having improved wear resistance, to such a tread and to a tire incorporating this tread. The composition is particularly applicable to tires of passenger-vehicle type. The rubber composition includes a plasticizing resin of number-average molecular weight of from 400 to 2000 g/mol, the resin having units resulting from the polymerization of a monocyclic or bicyclic unsaturated terpene, in a mass fraction of from 70% to 100%, and having a glass transition temperature greater than 50° C. and less than 120° C.

Abstract: The invention relates to a cross-linked rubber composition for a tire tread having a Shore A hardness greater than 45 and less than 57, measured in accordance with Standard ASTM D 2240, wherein the composition comprises greater than 25 phr and up to 100 phr, of one or more diene elastomers each having a temperature Tg of between ?75° C. and ?40° C., less than 75 phr and down to 0 phr, of one or more diene elastomers each having a temperature Tg of between ?110° C. and ?75° C., from 5 phr to 35 phr, of at least one hydrocarbon plasticizing resin miscible in said elastomer(s), said resin having a Tg of between 10° C. and 150° C. and a molecular weight Mn of between 400 and 2000 g/mol, and from 5 phr to 35 phr of at least one synthetic or natural plasticizing compound which comprises at least one glycerol fatty acid triester, wherein an aggregate constituted by the fatty acid(s) comprises oleic acid in a mass fraction equal to or greater than 60%.

Abstract: Rubber composition vulcanizable with sulfur and tire tread and tire casing comprising the composition, characterized in that the composition comprises: a) at least one polymer selected from the group consisting of diene polymers, olefin/monomeric diene copolymers and isoolefin/halogenated para-alkylstyrene copolymers; b) silica as filler; c) at least one agent of the sulfur-containing silane type promoting the linkage between silica and polymer; d) at least one substituted guanidine; and in that it has at least one of the following characteristics: It has at least one diene polymer which comprises at least one terminal amino group of an aliphatic or cycloaliphatic amine which is bonded thereto at the end of the chain, the polymer then being devoid of the alkoxysilane and silanol group; the composition comprises at least one free aliphatic or cycloaliphatic amine.

Abstract: The present invention relates to a cross-linkable or cross-linked rubber composition usable in a tread of a tire, and to a tire incorporating this tread.

Abstract: The present invention relates to a cross-linkable or cross-linked rubber composition which is usable to constitute a tread of a tire, having improved wear resistance. The composition of the present invention is based on one or more diene elastomers and comprises at least one hydrocarbon plasticizing resin which is miscible in the diene elastomer(s), the resin having a Tg of between 10° C. and 150° C.

Abstract: The present invention relates to a cross-linkable or cross-linked rubber composition which is usable to constitute a tread of a tire, to such a tread having in particular improved wear resistance, and to a tire having improved endurance by incorporating this tread. A composition according to the invention is based on one or more diene elastomers, said composition comprising at least one hydrocarbon plasticizing resin in a quantity of from 5 phr to 35 phr which is miscible in said diene elastomer(s), having a glass transition temperature Tg of between 10° C. and 150° C. and a molecular weight of between 400 and 2000 g/mol; one or more of a majority diene elastomer having a Tg of between −65° C. and −10° C. present in a quantity between 50 phr and 100 phr, and one or more of a minority diene elastomer having a Tg of between −110° C. and −80° C. present in a quantity between 0 phr and 50 phr.

Abstract: A sulfur-vulcanizable rubber composition which in vulcanized state is of improved hysteresis, comprising silica as reinforcing filler and a polymer which is coupled and/or starred by means of an agent having the general formula: (Y)m—R1—Si(OR2)3−n—R3n in which Y represents the radical R1 represents an alkyl, cycloalkyl, or aryl radical having 1 to 10 carbon atoms, R2 represents an alkyl, aryl, cycloalkyl, alkaryl or aralkyl radical having from 1 to 12 carbon atoms, R3 represents an alkyl, aryl or alkaryl radical having 1 to 12 carbon atoms, R4 represents a hydrocarbon radical having 1 to 6 carbon atoms and may comprise one or more oxygen atoms in the hydrocarbon chain, n is a whole number selected from among the values 0 and 1, m is a whole number selected from among the values 1 and 2, p and q are whole numbers selected from among the values 0, 1, 2, 3, and 4, it being understood that the sum of p+q must represent a whole number between 2 and 5 inclusi

Abstract: A rubber composition of improved hysteretic and physical properties which make it suitable for forming a tire tread, notably a tire tread of reduced rolling resistance, the rubber composition including carbon black having silica fixed to its surface as the majority portion of reinforcing filler and at least one functionalized diene polymer having at the end of its chain a silanol function or a polysiloxane block including a silanol end or a diene polymer modified along its chain by silanol functions.

Abstract: A rubber composition which has a reduced hysteresis making it particularly suitable for use as a tread of a tire having reduced rolling resistance, including silica as predominant reinforcing filler and at least one diene polymer bearing, as a chain end, a silanol functional group or a polysiloxane block which has a silanol end.

Abstract: A rubber composition having improved hysteretic and physical properties which make it particularly suitable for forming a tire tread of reduced rolling resistance, comprising carbon black having silica fixed to its surface as the majority portion of reinforcing filler and at least one diene polymer functionalized by means of a functionalizing agent of general formula:(Y).sub.m --R.sup.1 --Si(OR.sup.2).sub.3-n R.sup.3.sub.n.

Abstract: A sulfur-vulcanizable rubber composition which in vulcanized state is of roved hysteresis, comprising silica as reinforcing filler and a polymer which is coupled and/or starred by means of an agent having the general formula:(Y).sub.m --R.sup.1 --Si(OR.sup.2).sub.3--n --R.sup.3 nin whichY represents the radical ##STR1## R.sup.1 represents an alkyl, cycloalkyl, or aryl radical having 1 to 10 carbon atoms,R.sup.2 represents an alkyl, aryl, cycloalkyl, alkaryl or aralkyl radical having from 1 to 12 carbon atoms,R.sup.3 represents an alkyl, aryl or alkaryl radical having 1 to 12 carbon atoms,R.sup.4 represents a hydrocarbon radical having 1 to 6 carbon atoms and may comprise one or more oxygen atoms in the hydrocarbon chain,n is a whole number selected from among the values 0 and 1,m is a whole number selected from among the values 1 and 2,p and q are whole numbers selected from among the values 0, 1, 2, 3 and 4, it being understood that the sum of p+q must represent a whole number between 2 and 5 inclusive.

Abstract: The present invention relates to a rubber composition reinforced by carbon lack and possibly silica, including at least one diene polymer functionalized or modified by an alkoxysilane derivative and at least one organosilane compound having a primary or secondary amine function or an imine function, which can be used for the manufacture of tires having, in particular, improved hysteresis properties.

Abstract: The present invention relates to a sulfur-vulcanizable rubber composition mprising, by way of reinforcing filler, carbon black or a mixture of carbon black and silica, at least one functionalized diene polymer bearing at the chain end a silanol function or a polysiloxane block having a silanol end, or modified along the chain by silanol functions and at least one organosilane compound comprising an amine or imine function, which can be used for the manufacture of tires having, in particular, improved hysteresis properties.