Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique

Compagnie Generale Des Establissements Michelin

Societe Detechnologie Michelin

Compagnie Generale Des Etablissements

Bibette, Jérôme

Martinez Pedrero, Fernando

Julien Berriot

Benoit De Gaudemaris

Geraldine Laffargue

Jérôme Bibette

Fernando Martinez Pedrero

Benoît De Gaudemaris

Aline Riou

Aurélie Joseph

Julien Cladiere

Emilie Maillet, Jr

Guillaume Guzman

Géraldine Laffargue

Emilie Maillet

The invention relates to a process for the preparation of a masterbatch of diene elastomer and reinforcing inorganic filler in accordance with the invention comprises the following successive stages:

Method for preparing a masterbatch of an elastomer and an inorganic reinforcing filler

A process for preparing a carbon species partially or completely covered with silica, including:

Process for preparing a silica-covered carbon-based species

The invention relates to a process for the preparation of a masterbatch in the liquid phase based on one or more diene elastomer latexes and on one or more fillers, comprising the following successive stages:

Process for preparing a masterbatch in the liquid phase

Method for preparing a silica/natural rubber masterbatch, including: doping the silica with magnesium; preparing at least one dispersion of the resulting doped silica in water; bringing a natural rubber field latex into contact with the aqueous doped-silica dispersion and mixing them together so as to obtain a coagulum; recovering the coagulum; and drying the recovered coagulum so as to obtain the masterbatch.

Method for preparing a masterbatch of natural rubber and magnesium-doped silica

Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a calcium salt in order to obtain a coagulum; and recovering the coagulum and drying the recovered coagulum in order to obtain the masterbatch. The molar content of calcium cations, defined as the number of moles of calcium cations of the calcium salt per BET unit area of the silica, is between 1.19*10and 2.81*10mol/m.

Method for preparing a masterbatch of diene elastomer and silica

Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a metal salt having an at least divalent metal element, in order to obtain a coagulum; and recovering the coagulum and drying same in order to obtain the masterbatch. The metal cation molar ration, defined as the number of moles of metal cations of the metal salt per BET unit area of the silica, is between 9.375*10and 1.875*10mol/m.

Preparation of a masterbatch of diene elastomer and silica including preparing at least one silica dispersion in water; bringing into contact and mixing an elastomer latex and the aqueous silica dispersion in the presence of a metal salt in order to obtain a coagulum; and recovering the coagulum and drying the recovered coagulum in order to obtain the masterbatch. The molar content of zinc cations, defined as the number of moles of zinc cations of the zinc salt per BET unit area of the silica, is between 1.19*10and 5.62*10mol/m.

The invention relates to a method for preparing a silica/natural rubber masterbatch, comprising the following successive steps:

Method for preparing a masterbatch of natural rubber and silica

The invention relates to a process for the preparation of a masterbatch in the liquid phase based on one or more diene elastomers and on one or more fillers which do not coagulate spontaneously with the said latex, comprising the following successive stages:

A tire inner liner having a rubber composition based on at least one butyl rubber, a reinforcing filler, graphite and a plasticizing system. The plasticizing system comprises a hydrocarbon plasticizing resin, the glass transition temperature Tof which is above 20&#xb0; C. and the softening point of which is below 170&#xb0; C. A process for producing such a composition for a tire inner liner comprises incorporating into a diene elastomer, in a mixer: a reinforcing filler, graphite, and a plasticizing system, by thermomechanically mixing all the ingredients, one or more times, until a maximum temperature between 110&#xb0; C. and 190&#xb0; C. is reached; cooling the mixture down to a temperature below 100&#xb0; C.; then incorporating a crosslinking system; and mixing everything until a maximum temperature below 110&#xb0; C. is reached.

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Clermont-Ferrand, France

Julien Berriot