Abstract: A rubber composition is based on at least one elastomer, a reinforcing filler, a crosslinking system and an optionally hydrogenated hydrocarbon-based resin, predominantly composed of units selected from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, said hydrocarbonbased resin having an average molecular weight Mz of less than 2000 g/mol and a glass transition temperature Tg, expressed in ° C., such that: Tg?80?2*(% HA), wherein % HA represents the content of aromatic protons of said resin, the content of said hydrocarbon-based resin being within a range extending from 15 to 150 phr.

Abstract: A rubber composition is based on at least one elastomer, a reinforcing filler, a crosslinking system and an optionally hydrogenated hydrocarbon-based resin, predominantly composed of units selected from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, said hydrocarbonbased resin having an average molecular weight Mz of less than 2000 g/mol and a glass transition temperature Tg, expressed in ° C., such that: Tg?80?2*(% HA), wherein % HA represents the content of aromatic protons of said resin, the content of said hydrocarbon-based resin being within a range extending from 15 to 150 phr.

Abstract: Described herein are tires comprising a rubber composition based on at least an elastomer matrix comprising from 50 to 100 phr of one or more copolymers of butadiene and of vinylaromatic monomer, having a content of vinylaromatic units of between 0 and 5% by weight and a Tg within a range extending from ?110° C. to ?70° C.; and a hydrocarbon resin, wherein the hydrocarbon resin is based on a cyclic monomer selected from the group consisting of a distillation cut from a petroleum refinery stream, and/or C4, C5 or C6 cyclic olefins and mixtures thereof, and wherein the hydrocarbon resin has a content of aromatic protons (H Ar, expressed in mol %), a glass transition temperature (Tg, expressed in ° C.), and a number average molecular weight (Mn, expressed in g/mol) that are represented by (1) H Ar>6 mol %, (2) Tg?95?2.2*(H Ar), and (3) Tg??53+(0.265*Mn).

Abstract: Described herein are tires comprising a rubber composition based on at least an elastomer and a hydrocarbon resin, wherein [[said]]the hydrocarbon resin is based on a cyclic monomer selected from the group consisting of a distillation cut from a petroleum refinery stream, and/or C4, C5 or C6 cyclic olefins and mixtures thereof, and wherein the hydrocarbon resin has a number average molecular weight (Mn) of between 150 and 800 g/mol, and a content of aromatic protons (H Ar, expressed in mol %), a glass transition temperature (Tg, expressed in ° C.), and a number average molecular weight (Mn, expressed in g/mol) that are represented by (1) H Ar<6 mol %, (2) Tg?95?2.2*(H Ar), (3) Tg?125?(0.08*Mn).

Abstract: Described herein are tires comprising a rubber composition based on at least an elastomer matrix comprising from 50 to 100 phr of one or more copolymers of butadiene and of vinylaromatic monomer, having a content of vinylaromatic units of between 0 and 5% by weight and a Tg within a range extending from ?110° C. to ?70° C.; and a hydrocarbon resin, wherein the hydrocarbon resin is based on a cyclic monomer selected from the group consisting of a distillation cut from a petroleum refinery stream, and/or C4, C5 or C6 cyclic olefins and mixtures thereof, and wherein the hydrocarbon resin has a content of aromatic protons (H Ar, expressed in mol %), a glass transition temperature (Tg, expressed in ° C.), and a number average molecular weight (Mn, expressed in g/mol) that are represented by (1) H Ar?6 mol %, (2) Tg?95?2.2*(H Ar), (3) Tg?125?(0.08*Mn).

Abstract: Described herein are tires comprising a rubber composition based on at least an elastomer and a hydrocarbon resin, wherein the hydrocarbon resin is based on a cyclic monomer selected from the group consisting of a distillation cut from a petroleum refinery stream, and/or C4, C5 or C6 cyclic olefins and mixtures thereof, and wherein the hydrocarbon resin has a content of aromatic protons (H Ar, expressed in mol %), a glass transition temperature (Tg, expressed in ° C.), and a number average molecular weight (Mn, expressed in g/mol) that are represented by (1) H Ar>6 mol %, (2) Tg?95?2.2*(H Ar), and (3) Tg??53+(0.265*Mn).

Abstract: A rubber composition is based on at least one elastomer, a reinforcing filler, a crosslinking system and an optionally hydrogenated hydrocarbon-based resin, predominantly composed of units selected from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, said hydrocarbon-based resin having an average molecular weight Mz of less than 2000 g/mol and a glass transition temperature Tg, expressed in ° C., such that: Tg?80?2*(% HA), wherein % HA represents the content of aromatic protons of said resin, the content of said hydrocarbon-based resin being within a range extending from 15 to 150 phr.

Abstract: A rubber composition based on at least: from 50 to 100 phr of one or more diene elastomers, referred to as very low glass transition temperature (Tg) diene elastomers, having a Tg within a range of from ?110° C. to ?70° C., selected from butadiene homopolymers, copolymers of butadiene and of a vinylaromatic monomer, having a content of vinylaromatic units of between 0 and 5% by weight, and mixtures thereof a reinforcing filler a crosslinking system; and from 50 to 150 phr of at least one hydrocarbon resin predominantly composed of units derived from terpene and phenol monomers, the resin having a content of aromatic protons of greater than 15%.

Abstract: A rubber composition is based on at least one diene elastomer, a reinforcing filler, a crosslinking system and a hydrocarbon-based resin. The hydrocarbon-based resin has a number-average molecular weight (Mn) of between 700 and 1000 g/mol, an average molecular weight Mz of greater than 6000 g/mol and a polydispersity index (PI) of greater than 2.4.

Abstract: The tread of a civil engineering vehicle tire comprises a rubber composition based on at least one elastomer matrix comprising from 50 to 100 phr of a styrene-butadiene copolymer and from 0 to 50 phr of isoprene elastomer; a reinforcing filler comprising predominantly carbon black with CTAB specific surface area greater than or equal to 90 m2/g; from 1 to 30 phr of at least one hydrocarbon resin predominantly consisting of units derived from aromatic and cycloaliphatic monomers, having an aromatic proton content between 0 and 12%, an ethylenic proton content greater than 3%, a number-average molecular weight above 500 g/mol and a polydispersity index greater than 2; and a crosslinking system.

Abstract: A rubber composition based on at least: from 50 to 100 phr of one or more diene elastomers, referred to as very low glass transition temperature (Tg) diene elastomers, having a Tg within a range of from ?110° C. to ?70° C., selected from butadiene homopolymers, copolymers of butadiene and of a vinylaromatic monomer, having a content of vinylaromatic units of between 0 and 5% by weight, and mixtures thereof a reinforcing filler a crosslinking system; and from 50 to 150 phr of at least one hydrocarbon resin predominantly composed of units derived from terpene and phenol monomers, the resin having a content of aromatic protons of greater than 15%.

Abstract: A rubber composition is based on at least one elastomer, a reinforcing filler, a crosslinking system and an optionally hydrogenated hydrocarbon-based resin, predominantly composed of units selected from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, said hydrocarbon-based resin having an average molecular weight Mz of less than 2000 g/mol and a glass transition temperature Tg, expressed in ° C., such that: Tg?80?2*(% HA), wherein % HA represents the content of aromatic protons of said resin, the content of said hydrocarbon-based resin being within a range extending from 15 to 150 phr.

Abstract: A rubber composition is based on at least one diene elastomer, a reinforcing filler, a crosslinking system and a hydrocarbon-based resin. The hydrocarbon-based resin has a number-average molecular weight (Mn) of between 700 and 1000 g/mol, an average molecular weight Mz of greater than 6000 g/mol and a polydispersity index (PI) of greater than 2.4.

Abstract: Nanoparticles of functionalized, cross-linked vinyl polymer, usable as reinforcing filler in a polymeric matrix. The vinyl polymer is a copolymer of at least the following monomers, which are all copolymerizable by free-radical polymerization: a non-aromatic vinyl monomer “A”; a monomer “B” bearing a function Z of formula ?Si—X, where X represents a hydroxyl or hydrolysable group; and a cross-linking monomer “C” which is at least bifunctional from the point of view of the polymerization. The vinyl polymer is preferably a polymethacrylate, in particular a copolymer of methyl methacrylate (monomer A), trimethoxysilylpropyl methacrylate (monomer B) and ethylene glycol dimethacrylate (monomer C), being in the form of nanobeads the diameter of which is of between 10 and 100 nm.

Abstract: Branched block polymers, and the rubber compositions containing them, which can be used, in particular, for manufacturing tires or semi-finished products for tires. Processes for preparing said polymers and compositions are also disclosed.

Abstract: Nanoparticles of functionalised, cross-linked vinyl polymer, usable as reinforcing filler in a polymeric matrix. The vinyl polymer is a copolymer of at least the following monomers, which are all copolymerisable by free-radical polymerisation: a non-aromatic vinyl monomer “A”; a monomer “B” bearing a function Z of formula ?Si—X, where X represents a hydroxyl or hydrolysable group; and a cross-linking monomer “C” which is at least bifunctional from the point of view of the polymerisation. The vinyl polymer is preferably a polymethacrylate, in particular a copolymer of methyl methacrylate (monomer A), trimethoxysilyipropyl methacrylate (monomer B) and ethylene glycol dimethacrylate (monomer C), being in the form of nanobeads the diameter of which is of between 10 and 100 nm.

Abstract: Nanoparticles of functionalised, cross-linked vinyl polymer, usable as reinforcing filler in a polymeric matrix. The vinyl polymer is a copolymer of at least the following monomers, which are all copolymerisable by free-radical polymerisation: a non-aromatic vinyl monomer “A”; a monomer “B” bearing a function Z of formula ?Si—X, where X represents a hydroxyl or hydrolysable group; and a cross-linking monomer “C” which is at least bifunctional from the point of view of the polymerisation. The vinyl polymer is preferably a polymethacrylate, in particular a copolymer of methyl methacrylate (monomer A), trimethoxysilylpropyl methacrylate (monomer B) and ethylene glycol dimethacrylate (monomer C), being in the form of nanobeads the diameter of which is of between 10 and 100 nm.

Abstract: Branched block polymers, and the rubber compositions containing them, which can be used, in particular, for manufacturing tires or semi-finished products for tires. Processes for preparing said polymers and compositions are also disclosed.

Abstract: Nanoparticles of a functionalized and crosslinked polyvinylaromatic (PVAr) that may be used as reinforcing filler in a polymeric composition, the PVAr being a copolymer of at least: a vinylaromatic comonomer “A”; a comonomer “B” carrying a functional group denoted by Z of formula ?Si—X, X representing a hydroxyl or hydrolyzable group; a crosslinking comonomer “C” which is at least bifunctional and polymerizable by means of an addition reaction, it being possible for comonomer C to be vinylaromatic, in this case identical or different to comonomer A or non-vinylaromatic. The PVAr comprises, for example, a copolymer of styrene, ethylvinylbenzene, divinylbenzene and trimethoxysilylpropyl(meth)acrylate, being in the form of nanobeads, the diameter of which is between 10 and 100 nm. This PVAr filler, thanks to a very low density, allows the weight of polymeric compositions, especially elastomer compositions, to be reduced without degrading the reinforcement, and with an notable reduction in hysteresis.