Compagnie Generale Des Etablissements Michelin

Ifp Energies Nouvelles

Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin Clermont-ferrand

Nuno Pacheco

Marc Jacquin

Margarita Dorato

Julien Thuilliez

Claire Rannoux

Rejane Dastillung

Charlotte Dire

Jean-Marc Marechal

Sophie Couderc

Mathieu Manceau

Romain Richard

Damien Leinekugel Le Cocq

Claire Fauvarque-Nuytten

Claire Fauvarque Nuytien

A process for the synthesis of an ethylene/butadiene copolymer is provided. The process is continuous and comprises the following steps:

Continuous synthesis of an ethylene and butadiene copolymer

A process for the synthesis of an ethylene/butadiene copolymer is provided. The process is continuous and comprises: a. feeding at least one stirred polymerization reactor with a mixture of ethylene, butadiene, hydrocarbon-based solvent and catalytic system allowing the formation of cyclic trans-1,2-cyclohexane units in the polymer chain with a mole ratio of ethylene to the sum of the ethylene and butadiene monomers ranging from 0.5 to 0.99; the concentration of ethylene and butadiene monomers in the polymerization reaction medium being at least 10% by weight relative to the total weight; the operating pressure of the reactor is greater than or equal to the saturated vapour pressure of the polymerization reaction medium; b. recovering the ethylene/butadiene copolymer, this copolymer comprising, statistically distributed, ethylene units, butadiene units and trans-1,2-cyclohexane units, the molar fraction of ethylene units in the copolymer being greater than or equal to 50%.

An ethylene/butadiene copolymer comprising statistically distributed ethylene units and butadiene unit is provided. The molar fraction of the ethylene units in the copolymer is greater than or equal to 50%, relative to the total number of moles of ethylene and butadiene units. The microstructure of the copolymer is homogeneous. A process for preparing such a copolymer and also the uses of this copolymer, in particular in rubber compositions for tires is also provided.

Ethylene and butadiene copolymer having a homogeneous microstructure

An ethylene/butadiene copolymer comprising statistically distributed ethylene units butadiene units, and trans-1,2-cyclohexane units is provided. The molar fraction of ethylene units in the copolymer is greater than or equal to 50%, relative to the total number of moles of ethylene, butadiene and trans-1,2-cyclohexane units. The microstructure of the copolymer is homogeneous. A process for preparing such a copolymer and also to the uses of this copolymer, in particular in rubber compositions for tires, is also provided.

Ethylene/butadiene copolymer of homogeneous microstructure

The invention relates to a method for producing butadiene that is fed with a butanediol feedstock, with said method comprising at least:

Method for producing and purifying 1,3-butadiene

The invention relates to a method for producing 1,3-butanediene from a butanediol feedstock that includes:

Method for producing butadiene from butanediols

The invention pertains to a method for converting butanediol into butadiene that is fed with a butanediol feedstock, where said method comprises at least an esterification step, a pyrolysis step, and a step for separation of the pyrolysis effluent comprising at least one section for cooling said pyrolysis effluent and producing a liquid pyrolysis effluent and a steam pyrolysis effluent and a gas-liquid washing section that is fed at the top with a fraction of the butanediol diester effluent obtained from the esterification step and at the bottom with the steam pyrolysis effluent, where said section produces a butadiene effluent at the top and a washing effluent at the bottom.

Conversion of butanediol into butadiene, with scrubbing using diesters

The invention relates to a conversion method that is fed with a diol feedstock that comprises at least 90% by weight of diol and a carboxylic acid feedstock that comprises at least 80% by weight of carboxylic acid. The method comprising at least:

Method for esterification of a diol using a reactive distillation

A method for producing 1,3-butadiene from a 1,4-butanediol feedstock:

Method for producing 1,3-butadiene from 1,4-butanediol

Modified diene elastomer, synthesis method for same, and rubber composition comprising modified diene elastomer

A continuous method for synthesizing a diene elastomer includes modifying the diene elastomer in a functionalizing device by:   

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Clermont-Ferrand, France

Nuno Pacheco