Compagnie Generale Des Etablissements Michelin

Compagnie Generale Des Establissements Michelin

Compagnie Generale Des Etablissments Michelin

Michelin Recherche Et Technique S.a.

Anne-Lise Thuilliez

Odile Gavard-Lonchay

David Doisneau

Anne-Frédérique Salit Salit

Claire Rannoux

Cedric Loubat

Sergey Ivanov

Sophie Gander

Gilles Boutevin

Christophe Le Clerc

Quentin Crouzet

Nicolas Seeboth

Jacky Pineau

Aurore Lardjane

Aline Riou

François Jean-Baptiste-Dit-Dominique

Oleg Ugolnikov

Thomas Guy

Jean-Michel Huyghe, Jr

Adeline Jasselin

Anne-Frédérique Salit

Julien Letessier

Odile Tadjoa

Cédric Loubat

Augustin Bosquet

Céline Ledoux

Joël Barbouteau

Pascal Bertho

The invention relates to a rubber composition based on at least one functionalized elastomer comprising polar functional groups, a reinforcing filler and a specific phenolic compound.

Rubber composition based on at least one functionalized elastomer comprising polar functional groups and a specific phenolic compound

A rubber composition is based on at least one elastomer, a reinforcing filler, a crosslinking system and at least one polyphenolic compound, the polyphenolic compound comprising at least three aromatic rings, each bearing at least two vicinal hydroxyl groups, and a composite is based on the rubber composition and at least one reinforcing element comprising a metallic surface.

Rubber composition comprising a polyphenolic compound

A rubber composition is based on at least one elastomer comprising epoxide functions, a crosslinking system comprising a polycarboxylic acid and an imidazole and at least one phenolic compound, the aromatic nucleus of said phenolic compound being substituted with at least a carboxyl group, a hydrogenocarbonyl group, an amino group or an aminoalkyl radical.

Diacid-crosslinked rubber composition comprising a phenolic compound

A rubber composition is based on at least one elastomer and at least one phenolic compound, the aromatic nucleus of said phenolic compound being substituted with at least one substituent comprising an oxygen atom, the molar mass of said phenolic compound being at most equal to 1000 g/mol, and said composition being free of molecular sulfur or comprising less than 1 phr thereof.

Sulfur-free crosslinked composition comprising a phenolic compound

The rubber composition comprises at least one resin based: (A1) on at least one aromatic compound comprising at least one aromatic ring bearing at least two functional groups, one of these functional groups being a hydroxymethyl functional group and the other being an aldehyde functional group or a hydroxymethyl functional group; and (A2) on at least one phenolic compound chosen from (A21) at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functional groups in the meta position with respect to one another, the two positions ortho to at least one of the hydroxyl functional groups being unsubstituted; and/or (A22) at least one aromatic monophenol comprising at least one six-membered aromatic ring bearing a single hydroxyl functional group, the two positions ortho to the hydroxyl functional group being unsubstituted or at least one position ortho to and the position para to the hydroxyl functional group being unsubstituted; and their mixtures.

High stiffness rubber composition

A rubber composition based at least on a functional elastomer and a reinforcing filler which comprises a carbon black is provided. The functional elastomer is a diene elastomer which comprises diene units in the cis-1,4 configuration and pendant groups of formula (I). The Y, Y, Yand Ysymbols, which are identical or different, represent an atom or a group of atoms, and at least one of the symbols denotes an attachment to a diene unit of the elastomer. The diene units in the cis-1,4 configuration represent at least 90 mol % of the diene units of the functional elastomer, and the carbon black represents more than 50% by weight of the reinforcing filler. 

Rubber composition

A rubber composition comprises at least one resin based on: (A1) at least one aromatic compound resulting from the reaction between a reactant of formula (&#x3b1;): where B represents CHO or CHOH, (&#x3b1;) and a reactant of formula (&#x3b2;) or and (A2) at least one phenolic compound chosen from: (A21) at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functional groups in the meta position with respect to one another, the two positions ortho to at least one of the hydroxyl functional groups being unsubstituted; and/or (A22) at least one aromatic monophenol comprising at least one six-membered aromatic ring bearing a single hydroxyl functional group, the two positions ortho to the hydroxyl functional group being unsubstituted or at least one position ortho to and the position para to the hydroxyl functional group being unsubstituted.

High strength 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 tire includes a carcass ply, two beads, two sidewalls, and a crown reinforcing zone. The carcass ply connects the two beads by way of the two sidewalls. The crown reinforcing zone is positioned radially external to the carcass ply. The crown reinforcing zone includes a plurality of reinforcing strips disposed in at least two layers. The reinforcing strips are coated in an elastomeric composition. A mean overlap between the reinforcing strips of the two layers is greater than 40%. The reinforcing strips are made of a thermoplastic film having a modulus greater than 0.9 GPa, and preferably greater than 2 GPa, in a main direction and in a transverse direction.

Pneumatic tire comprising reinforcing elements in the form of multi-layer tapes

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

A reinforced product, which can be used especially for reinforcing a finished rubber article, comprises one or more textile or metallic reinforcing thread(s), said thread(s) being covered with a sheath comprising a thermoplastic polymer composition, the sheathed thread(s) being themselves embedded in a rubber composition referred to as coating rubber, characterized in that this coating rubber is a composition based on at least one diene elastomer, a reinforcing filler, and a sulfur-based vulcanization system, which system comprises a vulcanization accelerator having a vulcanization initiation time, referred to as 't', of less than 3.5 minutes, preferably of less than or equal to 3 minutes.

Reinforced product comprising a composition containing a rapid vulcanization accelerator and tire comprising said reinforced product

A rubber composition comprises at least one phenol-aldehyde resin based: on at least one derivative of an aromatic polyphenol comprising at least one aromatic ring bearing at least two &#x2014;O&#x2014;Z groups in the meta position relative to one another, the two positions ortho to at least one of the &#x2014;O&#x2014;Z groups being unsubstituted, Z being other than hydrogen, and on at least one aldehyde.

High-strength rubber composition comprising an aromatic polyphenol derivative

An aromatic polyphenol derivative which comprises at least one aromatic ring bearing at least two &#x2014;O&#x2014;Z groups in the meta position relative to one another, the two positions ortho to at least one of the &#x2014;O&#x2014;Z groups being unsubstituted, is used for the manufacture of a phenol-aldehyde resin for reinforcing a rubber composition. Each &#x2014;O&#x2014;Z group represents an &#x2014;O&#x2014;((C&#x2550;O)(R)) group with Rrepresenting a hydrocarbon-based radical or a substituted hydrocarbon-based radical.

Use of an esterified aromatic polyphenol derivative for the production of a phenol-aldehyde resin for reinforcement of a rubber composition

A rubber composition comprises at least one phenol-aldehyde resin based on: at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two &#x2014;O&#x2014;H groups in the meta position relative to one another, the two positions ortho to at least one of the &#x2014;O&#x2014;H groups being unsubstituted; and at least one aldehyde of formula W: wherein each Arand Argroup represents, independently of one another, an optionally substituted aromatic ring; and wherein SP is a connecting group that connects at least the Arand Argroups to one another, SP separating the Arand Argroups by at least 2 covalent bonds.

Rubber composition with a high level of fluidity based on an aromatic aldehyde and an aromatic polyphenol

A rubber composition comprises at least one phenol/aldehyde resin based on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and at least one aldehyde of formula (A): in which X comprises N, S or O, and R represents &#x2014;H or &#x2014;CHO.

Growing community of inventors

Clermont-Ferrand, France

Anne-Lise Thuilliez