Compagnie Generale Des Etablissements Michelin

Centre National De La Recherche Scientifique

Universite Claude Bernard – Lyon1

Ecole Superieure De Chimie Physique Electronique De Lyon

Arkema France

Université Claude Bernard Lyon I

François Jean-Baptiste-Dit-Dominique

Julien Thuilliez

Anne-Lise Thuilliez

Christophe Boisson

Vincent Lafaquiere

Rachid Matmour

Emma Moreso

Sergey Ivanov

Etienne Fleury

Nathalie Coste

Sophie Gander

Franck D'Agosto

Benoit Schnell

Cedric Loubat

Robert Ngo

Adeline Jasselin

Camille Chatard

Oleg Ugolnikov

Cédric Loubat

Anne-Frédérique Salit

Nicolas Baulu

Damien Montarnal

Ruslan Nasybullin

A diblock polymer composed of a first block and a second block is provided. The first block is a statistical copolymer comprising units of a 1,3-diene and more than 50 mol % of ethylene units. The second block is a polyethylene with a melting point above 90° C. and a number-average molar mass greater than or equal to 2000 g/mol and less than or equal to 10 000 g/mol. Such a diblock polymer has improved rheology compared to a statistical copolymer of the same microstructure and of the same macrostructure as the first block of the diblock polymer.

Ethylene-rich diene block polymer having a random block and a polyethylene block

A rubber composition contains: an elastomer matrix comprising at least one diene elastomer comprising epoxide functions, at least one reinforcing filler, and a system for crosslinking the polymer, comprising at least one organopolyphosphorus compound of general formula (I) in which A represents a covalent bond or a hydrocarbon group comprising at least 1 carbon atom, which is optionally substituted and which optionally comprises one or more heteroatoms, and the Rs represent, independently of one another, a hydrocarbon group comprising at least 1 carbon atom or a hydrogen atom.

Rubber compositions comprising an epoxide diene elastomer and a cross-linking system

A modified polymer is obtained by grafting at least one compound of formula (I) to at least one unsaturation of the chain of an initial polymer in which Q represents a dipole comprising at least one nitrogen atom; A represents an arenediyl ring, optionally substituted by one or more hydrocarbon-based chains, which are identical or different, independent of one another, and are optionally substituted or interrupted by one or more heteroatoms; E represents a divalent hydrocarbon-based bonding group which may optionally contain one or more heteroatoms; R, Rand Rrepresent, independently of one another, a hydrogen atom or a hydrocarbon-based chain which is optionally substituted or interrupted by one or more heteroatoms; and n is an integer having a value greater than or equal to 1.

Grafted polymer bearing pendent cyclic carbonate functional groups

A block polymer comprising a first block and a second block is provided. The first block contains aromatic &#x3b1;-mono-olefin units, and the second block contains both 1,3-diene units and mono-olefin units.

Block polymers

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.

Rubber composition including a diene elastomer comprising carbonate functional groups

A process for modifying a natural rubber is provided. The process comprises at least the following steps: A modified natural rubber capable of being obtained by the process and also rubber compositions based on the modified natural rubber is also provided.

Method for modifying a natural rubber, and modified natural rubber

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Clermont-Ferrand, France

François Jean-Baptiste-Dit-Dominique