Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissments Michelin

Arkema France

Sergey Ivanov

Anne-Frédérique Salit Salit

Sophie Gander

Nicolas Seeboth

Jean-Luc Couturier

Claire Rannoux

Anne-Lise Thuilliez

Etienne Fleury

Benoît Schnell

Oleg Ugolnikov

José Carlos Araujo Da Silva

Karine Longchambon

François Jean-Baptiste-Dit-Dominique

Philippe Leduc

Anne-Frédérique Salit

Sergey Molkov

Ruslan Nasybullin

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.

1,3-dipolar compound comprising an epoxide group

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.

Rubber composition

In a 1,3-dipolar compound of formula Q-A-B, Q comprises a dipole containing at least and preferably one nitrogen atom, A, which is preferably divalent, is an atom or a group of atoms connecting Q to B, and B comprises an imidazole ring. An unsaturated polymer modified by grafting the 1,3-dipolar compound is also disclosed.

1,3-dipolar compound bearing an imidazole functional group

A 1,3-dipolar compound bearing at least a phosphorus-containing group and a dipole containing a nitrogen atom is provided. A method for grafting the 1,3-dipolar compound on an unsaturated polymer, a diene polymer comprising, along the polymer chain, at least one pendant phosphorus-containing group, and a rubber composition based on a diene elastomer and the 1,3-dipolar compound optionally pre-grafted on the diene elastomer are also provided. The 1,3-dipolar compound allows access to rubber compositions reinforced with an inorganic filler that have a compromise of improved properties, namely hysteresis, stiffness in the cured state and reinforcement.

1,3-dipolar compound bearing a phosphorus-containing group and a dipole containing a nitrogen atom

Thiadiazole which can be used as a vulcanization accelerator and method for obtaining same

An organosilane of general formula I below: (HO)RSi&#x2014;Z&#x2014;S&#x2014;Rin which: R, which are identical or different, each represent a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 18 carbon atoms; Rrepresents a monovalent hydrocarbon-based group chosen from alkyls, which are linear or branched, cycloalkyls or aryls, having from 1 to 30 carbon atoms; Z represents a divalent bonding group comprising from 1 to 18 carbon atoms; and m is a number greater than or equal to 2.

Organosilane coupling agent

A 1,2,4-triazine of formula (I): and its process of manufacture and use.

1,2,4-triazine suitable as a vulcanization accelerator and method for producing same

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Clermont-Ferrand, France

Sergey Ivanov