Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Compagnie Générale Des Etablissements Michelin-michelin & Cie

Michelin Recherche Et Technique

Compagnie Generale Des Establissements Michelin

Compagnie Generale Des Etablissments Michelin

Compagnie Generale Des Establissements Michelin - Michelin & Cie

Compagnie Generale Des Etablissements

Societe Detechnologie Michelin

Patrick Martigny

Didier Vasseur

Garance Lopitaux

Jose Merino Lopez

Frédéric Pialot

Luc Bestgen

Stéphanie Cambon

José Merino Lopez

Bozena Voge

Benjamin Gornard

Pierre Lesage

Gerard Labauze

Christiane Blanchard

Xavier Saintigny

Jean-Marc Marechal

Olivia Cuscito

Franck Varagniat

Philippe Labrunie

Guillaume Pibre

Béatrice Lopez

Sylvain Petitjean

Julien Cladiere

Xavier Lebrun

Frederic Lemerle

Jacques Babaud

Gérard Labauze

Delphine Nayrat

Sylvain Petit Jean

Jean-Luc Guerbert-Jubert

Orel Fournier

Rémi Bruant

Robert Chassagnon

Kyoko Kobayashi

Aurore Crochet

François Lafort

A tire with improved wear resistance, rolling resistance and cohesion, comprises a rubber composition based on at least one elastomeric matrix comprising predominantly a random copolymer comprising ethylene units and conjugated diene units, the mole fraction of ethylene units in the copolymer being within a range extending from 50% to 95%; a peroxide; and a specific polyfunctional acrylate; the contents of polyfunctional acrylate and of peroxide being such that the ratio of the peroxide content to the polyfunctional acrylate content is greater than or equal to 0.08; said composition comprising from 5 to less than 65 phr of reinforcing filler; the ratio of the filler content to the polyfunctional acrylate content being greater than or equal to 1.25.

Tire having a composition comprising an ethylene-rich elastomer, a peroxide and a polyfunctional acrylate derivative

A tire with improved wear resistance, rolling resistance and cohesion, comprises a rubber composition based on at least one elastomeric matrix comprising predominantly a random copolymer comprising ethylene units and conjugated diene units, the mole fraction of ethylene units in the copolymer being within a range extending from 50% to 95%; a peroxide; and a zinc diacrylate derivative in the form of a specific zinc salt; in which composition the contents of zinc diacrylate derivative and of peroxide being such that the ratio of the peroxide content to the zinc diacrylate derivative content is greater than or equal to 0.08; said composition comprising from 5 to less than 65 phr of reinforcing filler; the ratio of the filler content to the zinc diacrylate derivative content being greater than or equal to 1.25.

Tire having a composition comprising an ethylene-rich elastomer, a peroxide and a zinc acrylate

A tire tread is based on one or more diene elastomers, on one or more reinforcing fillers, on a crosslinking system, and on at least one compound (A) selected from a metal chelate comprising at least one ligand and at least one metal, a pigment and their mixture.

Tire tread comprising at least one metal chelate and/or a pigment

A tire comprises a rubber composition based on at least one diene elastomer, a reinforcing filler, a specific polyfunctional acrylate derivative, silica as predominant reinforcing filler, a guanidine derivative and a peroxide, the contents of polyfunctional acrylate derivative and of peroxide being such that the ratio of the content of polyfunctional acrylate derivative to the content of peroxide is greater than or equal to 6.

Tire comprising a composition comprising a polyfunctional acrylate derivative and a peroxide

The tire has a carcass reinforcement which has at least one layer and a crown reinforcement that is capped radially by a tread. The tire also includes a layer P of polymer compounds in contact with at least one working crown layer and in contact with the carcass reinforcement. The elastomer compounds forming the calendering layer, radially outermost with respect to the crown of the tire, of the carcass reinforcement layer have a relative density of sulfur bridges of less than 5%. The elastomer compounds forming the layer P have a relative density of sulfur bridges of less than 5%. The elastomer compounds are compositions based on at least one diene elastomer selected from the group of polybutadienes (BRs), synthetic polyisoprenes (IRs), natural rubber (NR), isoprene copolymers, butadiene copolymers with the exception of butadiene-nitrile copolymers (NBRs), apart from diene elastomers bearing carboxyl functions, and mixtures of these diene elastomers.

Tire comprising elastomeric mixtures with a low level of sulfur

A tire is provided with a tread comprising a rubber composition based on at least one diene elastomer, a reinforcing filler, a crosslinking system and a polymethyl methacrylate thermoplastic resin, the polymethyl methacrylate thermoplastic resin exhibiting a Vicat point, measured according to Standard ISO 306: 2013 B50, within a range extending from 60&#xb0; C. to 100&#xb0; C.

Tire provided with a tread comprising a rubber composition including a thermoplastic resin of poly(methyl methacrylate)

A tire, which has an improved grip on wet ground, includes a tread formed of at least a rubber composition. The rubber composition includes: 20 to 100 phr of a first diene elastomer bearing at least one SiOR function, with R being hydrogen or a hydrocarbon radical, and with phr referring to parts by weight per hundred parts of elastomer; 100 to 160 phr of a reinforcing inorganic filler; and a plasticizing system. The plasticizing system includes: a content A of between 5 and 60 phr of a hydrocarbon resin having a Tg above 20&#xb0; C.; and a content B of between 5 and 60 phr of a liquid plasticizing agent. A total content A+B is greater than 45 phr. The rubber composition optionally includes 0 to 80 phr of a second diene elastomer.

Tyre tread

The tire (B) comprises a tread () including a running layer () which is intended to come into contact with the ground when the tire (B) rolls on the ground, and a sublayer () located radially inwards from the running layer (). The tread () comprises at least one fluid passage () between the sublayer () and the air surrounding the tire (B). The sublayer () comprises a cellular material. The fluid passage () comprises an element chosen from a groove () and a cut (), formed in the running layer () and extended by at least one well () acting as a radial extension of the element, formed between the groove () and/or the cut () and the sublayer (). Each well () forms a localized part of the fluid passage ().

Tire and mold comprising a fluidic passage

The invention relates to a tire provided with a tread, said tread comprising a rubber composition based on at least one diene elastomer, a zinc diacrylate derivative in the form of a zinc salt in which R1, R2 and R3 independently represent a hydrogen atom or a C1-C7 hydrocarbon group selected from linear, branched or cyclic alkyl groups, aralkyl groups, alkylaryl groups and aryl groups, which are optionally interrupted by one or more heteroatoms, R2 and R3 being able to form together a non-aromatic ring, and a peroxide. The contents of zinc diacrylate derivative and peroxide are such that the ratio of the peroxide content to the zinc diacrylate derivative content is less than or equal to 0.09, said composition comprising no reinforcing filler or comprising less than 50 phr thereof, the ratio of the filler content to the zinc diacrylate derivative content being less than or equal to 2.

Tire comprising a composition comprising a zinc diacrylate derivative and a peroxide

Self-sealing elastomer composition that can be used especially as a puncture-resistant layer in an inflatable article, comprising: as predominant elastomer, an unsaturated diene elastomer; between 30 and 90 phr of a hydrocarbon resin; and 0 to less than 30 phr of a filler. Also disclosed is an article such as a tire provided with a puncture-resistant layer comprising the self-sealing elastomer composition. The puncture-resistant layer is advantageously combined with an airtight layer, for example based on butyl rubber, so as to form, in the inflatable article, a puncture-resistant airtight laminate.

Self-sealing composition for an inflatable article

A layer of cellular material forms a running layer (A) of a tread () in which tread pattern elements () are made. In order to form the cellular material, an uncured blank is provided with a mass of material comprising p,p'-oxybis(benzenesulphonyl hydrazide) that forms a pore-forming agent. The uncured blank is placed in a vulcanization mold () comprising molding elements (). At least 95% of the molding elements () each satisfy the following two conditions:

Method for producing tire having tread with foamed material and hollow tread pattern elements

The invention relates to a rubber composition devoid of or practically devoid of zinc or zinc derivative, usable in particular for the manufacture of tires or tire treads, comprising at least: in which:

Rubber composition devoid of or practically devoid of zinc

The present invention relates to a rubber composition comprising a styrene-butadiene copolymer (SBR), a polybutadiene (BR), an unsaturated thermoplastic styrene (TPS) copolymer and a reinforcing filler. The invention also relates to the use of such a composition for the manufacture of a tire tread that has improved properties in terms of wear resistance, while retaining a very good level of grip on wet ground.

Rubber composition for a tread comprising an unsaturated TPS

The present invention relates to a rubber composition based on at least an epoxidized natural rubber (ENR), a reinforcing filler and, as plasticizing agent, an alpha-methylstyrene polymer resin. The invention also relates to the use of such a composition for the manufacture of a tire tread exhibiting an improved compromise of properties with respect to grip on wet ground and rolling resistance.

Rubber composition for a tire containing epoxide natural rubber and a plasticizing resin

A rubber composition used for forming a tread of a tire includes an elastomer matrix, a reinforcing filler, and a coupling agent. The elastomer matrix includes from 60 to 95 phr of at least one diene elastomer and from 5 to 40 phr of a polar thermoplastic elastomer (TPE). The polar TPE includes at least one elastomer block and one polar thermoplastic block selected from a homopolymer or copolymers of an alkylacrylic acid ester, with an alkyl radical containing 1 to 4 carbon atoms. The reinforcing filler includes a reinforcing inorganic filler. The presence of the polar TPE makes it possible to improve a compromise of wet grip and dry grip performances of the tread.

Growing community of inventors

Clermont-Ferrand, France

Didier Vasseur