Abstract: A 1,3-dipolar compound including an epoxide group is provided. The epoxide group is a 3-membered ether ring in which a first member is a carbon atom having an attachment to the dipole of the 1,3-dipolar compound and a second member is a tertiary or quaternary carbon. The use of the 1,3-dipolar compound in the modification of a diene polymer makes it possible to improve the rupture properties of a rubber composition comprising the modified polymer, without the expense of its hysteresis properties, while at the same time improving its implementation.

Abstract: An article made from a material having a density between 2 and 7 g/cm3, the material comprising by weight for a total of 100%: a filler (2) made from a metal and/or ceramic material; at least one polymer (4); optionally at least one coupling agent (3) present in a percentage greater than or equal to 0% and less than 10%; optionally at least one reinforcement present in a percentage between 0 and 10%; optionally at least one pigment present in a percentage between 0 and 5%; optionally at least one diluent and/or a plasticiser present in a percentage between 0 and 5%. The polymer (4) is bonded to the filler (2) and the coupling agent (3) is respectively bonded to the polymer (4) and to the filler (2) by one or more bonds chosen from a hydrogen bond, a coordinate bond and an ionic bond.

Abstract: An item made of a material including by weight: a metallic and/or ceramic filler present in a percentage greater than or equal to 50% and less than or equal to 85%, at least one polymer present in a percentage greater than or equal to 15% and less than or equal to 50%, the polymer being bonded to the filler. The polymer can include a hydrogen bond donor which is a group NHx adjacent to a hydrogen bond acceptor which is a group C?O; so as to form a unit —[(C?O)NH]—; and the unit —[(C?O)NH]— representing at least 1% molar of the polymer.

Abstract: A rubber composition is based on at least: a copolymer A based on at least one ethylene monomer and on at least one vinyl acetate monomer; a reinforcing inorganic filler, said inorganic filler comprising silica; as agent for coupling between said copolymer A and said reinforcing inorganic filler, an organosilane compound of formula (I) B-Z—Si(G1)(3-d)(G2)(d)??(I), wherein B, Z, G1, G2 and (d) have the meanings indicated in the claims; and a peroxide crosslinking system. This composition is especially intended for the manufacture of semi-finished products for tires or for the manufacture of tires.

Abstract: A rubber composition based on at least one diene elastomer, a reinforcing filler and a 1,3-dipolar compound comprising an epoxide group is provided. The epoxide group is a 3-membered ether ring in which a first member is a carbon atom exhibiting a connection to the dipole of the 1,3-dipolar compound and a second member is a tertiary or quaternary carbon. Such a rubber composition exhibits improved properties at break and an improved processing, as well as good hysteresis properties.

Abstract: A rubber composition is based on at least: a copolymer A, with a content of greater than or equal to 50 phr, said copolymer A being a copolymer based on at least one ethylene monomer and on at least one vinyl acetate monomer a reinforcing inorganic filler as agent for coupling between said copolymer A and said reinforcing inorganic filler, a copolymer B different from said copolymer A, said copolymer B being a copolymer based on at least one alpha-olefin monomer and on at least one functional monomer Y; and a peroxide crosslinking system. This composition is especially intended for the manufacture of semi-finished products for tires or for the manufacture of tires.

Abstract: A process for preparing a random copolymer based on at least one acyclic diene monomers and on at least one cyclic diene monomer is provided. The process comprises a step of copolymerization, in the presence of a polar agent and an anionic initiator in a polymerization solvent, of at least one acyclic diene monomer and of at least one cyclic diene monomer of which one C?C double bond is endocyclic and conjugated to an exocyclic C?C double bond, at a polymerization temperature below 80° C. A molar ratio of the polar agent/function(s) of the anionic initiator capable of initiating anionic polymerization being greater than 0.1. Copolymers based on at least one acyclic diene monomer and on at least one cyclic diene monomer and the compositions containing them are also provided.

Abstract: A diene polymer including at least one specific epoxide side group, one of the carbon atoms of which simultaneously has an attachment to the polymer chain and is a trisubstituted carbon, and the other carbon atom is an at least trisubstituted carbon is provided. The introduction of such a polymer, in particular elastomer, into a rubber composition makes it possible to improve its rupture properties without this being at the expense of its hysteresis properties, while at the same time improving its implementation.

Abstract: A 1,3-dipolar compound including an epoxide group is provided. The epoxide group is a 3-membered ether ring in which a first member is a carbon atom having an attachment to the dipole of the 1,3-dipolar compound and a second member is a tertiary or quaternary carbon. The use of the 1,3-dipolar compound in the modification of a diene polymer makes it possible to improve the rupture properties of a rubber composition comprising the modified polymer, without the expense of its hysteresis properties, while at the same time improving its implementation.

Abstract: A rubber composition is based on at least: a copolymer A based on at least one ethylene monomer and on at least one vinyl acetate monomer; a reinforcing inorganic filler, said inorganic filler comprising silica; as agent for coupling between said copolymer A and said reinforcing inorganic filler, an organosilane compound of formula (I) B-Z—Si(G1)(3-d)(G2)(d)??(I), wherein B, Z, G1, G2 and (d) have the meanings indicated in the claims; and a peroxide crosslinking system. This composition is especially intended for the manufacture of semi-finished products for tires or for the manufacture of tires.

Abstract: A rubber composition based on a reinforcing filler and on an elastomer comprising units of a 1,3-diene monomer and bearing carbonate functions, each present in a 1,3-dioxolan-2-one ring is provided. The composition has improved reinforcement.

Abstract: A rubber composition based on at least one diene elastomer, a reinforcing filler and a 1,3-dipolar compound comprising an epoxide group is provided. The epoxide group is a 3-membered ether ring in which a first member is a carbon atom exhibiting a connection to the dipole of the 1,3-dipolar compound and a second member is a tertiary or quaternary carbon. Such a rubber composition exhibits improved properties at break and an improved processing, as well as good hysteresis properties.

Abstract: A tire comprising a rubber composition comprising a substituted diene elastomer is provided. The substituted diene elastomer comprises units bearing an A-B radical, in which: A represents an aliphatic C3-C35 radical which can be interrupted by one or more heteroatom(s), and B represents a linear, branched or cyclic C1-C6 hydrocarbon radical. A and B are such that the melting point of the analogue, H-A-B, is less than 70° C., and the substituted diene elastomer comprises from 10% to 40% by weight of the A-B radical, with respect to the total weight of the elastomer. A tread comprising such a rubber composition is also provided. A rubber composition comprising such a substituted diene elastomer and at least one of the following constituents: a second diene elastomer; a reinforcing filler and, if appropriate, a coupling agent is also provided.

Abstract: A process for preparing a random copolymer based on at least one acyclic diene monomers and on at least one cyclic diene monomer is provided. The process comprises a step of copolymerization, in the presence of a polar agent and an anionic initiator in a polymerization solvent, of at least one acyclic diene monomer and of at least one cyclic diene monomer of which one C?C double bond is endocyclic and conjugated to an exocyclic C?C double bond, at a polymerization temperature below 80° C. A molar ratio of the polar agent/function(s) of the anionic initiator capable of initiating anionic polymrization being greater than 0.1. Copolymers based on at least one acyclic diene monomer and on at least one cyclic diene monomer and the compositions containing them are also provided.

Abstract: A rubber composition is based on at least: a copolymer A, with a content of greater than or equal to 50 phr, said copolymer A being a copolymer based on at least one ethylene monomer and on at least one vinyl acetate monomer a reinforcing inorganic filler as agent for coupling between said copolymer A and said reinforcing inorganic filler, a copolymer B different from said copolymer A, said copolymer B being a copolymer based on at least one alpha-olefin monomer and on at least one functional monomer Y; and a peroxide crosslinking system. This composition is especially intended for the manufacture of semi-finished products for tires or for the manufacture of tires.

Abstract: The present invention relates to a tire comprising a rubber composition based on at least a reinforcing filler, a polymer comprising conjugated diene functions and a system for crosslinking the polymer. The system for crosslinking the polymer comprises a polydienophile of general formula (I): According to formula (I), A represents a covalent bond or a hydrocarbon-based group comprising at least 1 carbon atom, which is optionally substituted and optionally interrupted by one or more heteroatoms, and R1, R2, R3 and R4 independently represent identical or different groups chosen from the hydrogen atom and hydrocarbon-based groups, R1 and R2 on the one hand and R3 and R4 on the other hand possibly forming, together with the carbon atoms of the ring to which they are attached, a ring.

Abstract: A rubber composition is based on at least one predominant elastomer comprising epoxide functional groups, silica as predominant reinforcing filler, an agent for covering the silica, and a system for crosslinking the elastomer comprising an imidazole and a polycarboxylic acid of general formula (I): and an imidazole of general formula (II):

Abstract: A rubber composition based on a reinforcing filler and on an elastomer comprising units of a 1,3-diene monomer and bearing carbonate functions, each present in a 1,3-dioxolan-2-one ring is provided. The composition has improved reinforcement.

Abstract: A rubber composition based on a reinforcing filler and on an elastomeric matrix comprising a highly saturated diene elastomer, comprising units of the following categories A, B, C, D and E, or units of these same categories A, B, C, D and E comprising, for at least one of the categories B, C, D and E, a mixture of at least two different units of the same category which differ from one another through the nature of their side groups Ri: and where R1, R2, R3 and R4, which are identical or different, denote a hydrogen atom, a methyl radical or a phenyl radical which is substituted or unsubstituted in the ortho, meta or para position by a methyl radical; R5 denotes a hydrogen atom or a methyl radical; R6 denotes a methyl radical or a phenyl radical which is substituted or unsubstituted in the ortho, meta or para position by a methyl radical; m, n, o, p and q are numbers ranging from 0 to 100.

Abstract: The present invention relates to a rubber composition based on a reinforcing filler and on an elastomer matrix comprising a highly saturated diene elastomer comprising at least five distinct units of A, B, C, D and E distributed randomly within the elastomer at respective molar fractions of m %, n %, o %, p % and q %, where m+n+o+p+q=100; m?50; n+o+p+q?10; and 15?p+q?2. This rubber composition enables a satisfactory degree of stiffness to be reached while maintaining hysteresis properties acceptable for use in the manufacture of tires for running vehicles.