Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Compagnie Generale Des Establissements Michelin

Capillum

David Doisneau

Anne-Lise Thuilliez

Odile Gavard-Lonchay

Gael Pataut

Hélène Decorps

Laura Luiz

Clement Michoud

Christophe Le Clerc

Nicole Dajoux

Thomas Guy

Julien Letessier

Mickael Rouby

Cedric Loubat

Julie Rognon

Cédric Loubat

Quentin Crouzet

Clément Michoud

Thibault Derouineau

Arnaud Rodrigues

Gaël Pataut

James Taylor

A resin composition is based on a resin chosen from the group consisting of unsaturated polyester resins and vinyl ester resins, a crosslinking initiator and a crosslinking agent of general formula R—X—R, in which X is an optionally substituted alkylene group and Rand Rare, independently of one another, an acrylate, methacrylate or vinyl group, an alkenyl group bearing an unsaturated carbon at the chain end, or an alkynyl group bearing an unsaturated carbon at the chain end.

Resin composition comprising a specific crosslinking agent

A process for the manufacture of a reinforced product comprising a matrix based on a composition and at least one reinforcing element, the reinforcing elements being embedded in the matrix, comprises: mixing of the composition based on: a compound A1 with a melting point T1, and a compound A2 with a melting point T2, at a temperature Tm such that: T1≤Tm<T2, so as to dissolve A2 in A1 and to obtain the composition in the liquid state; submerging of the reinforcing element(s) () in the composition; and crosslinking by heating of the composition at a temperature Tn such that: T1≤Tm<Tn.

Method for producing a product reinforced by a reinforcing element

A resin composition is based on a resin selected from the group consisting of vinyl ester resins and unsaturated polyester resins, a crosslinking initiator and a crosslinking agent of general formula (I) in which i is an integer between 2 and 4, X is an i-valent group comprising at least one ring of 6 atoms selected from carbon and nitrogen and comprising at least 2 heteroatoms selected from nitrogen and oxygen, and R is an acrylate group, methacrylate group, vinyl group, alkenyl group bearing an unsaturated carbon at the chain end, or alkynyl group bearing an unsaturated carbon at the chain end.

A composition of epoxide-functionalized resins comprises at least a first epoxide-functionalized novolac resin, a second epoxide-functionalized novolac resin, and a curing agent selected from phenolic or amine-type curing agents, the average molar mass of the group consisting of the entirety of the epoxidized novolac resins in the said composition being between 550 and 650 g/mol, the average epoxide functionality of the said group being between 3 and 3.5 eq epoxide/mol, and the said composition having a glass transition temperature Tg of at least 160&#xb0; C.

Epoxy-functionalized novolak resin composition

The present invention relates to an adhesive composition comprising: at least one phosphate salt chosen from sodium phosphate, potassium phosphate and mixtures of these phosphates; and at least one resin based on: at least one compound A1, compound A1 being chosen from a compound A11 comprising at least two functions, one of these functions being a hydroxymethyl function and the other being an aldehyde function or a hydroxymethyl function, or a compound A12 comprising at least one aldehyde function, or a mixture of a compound A11 and of a compound A12; and at least one phenol A21.

Adhesive composition comprising a phosphate salt and a thermosetting resin

The present invention relates to a process for electroplating an adhesive composition onto at least one conductive element, in which the conductive element is placed in contact with the adhesive composition comprising: a phosphate salt and a resin based on: a compound A1, compound A1 being chosen from a compound A11 comprising at least two functions, one of these functions being a hydroxymethyl function and the other being an aldehyde function or a hydroxymethyl function, or a compound A12 comprising at least one aldehyde function, or a mixture of a compound A11 and of a compound A12; and a phenol A21. A potential difference is applied between the conductive element and the adhesive composition to coat the conductive element with an adhesive layer.

Process for electroplating an aqueous adhesive composition comprising a phosphate salt and a thermosetting resin on a conductive element

A composite comprises: at least one reinforcing element (), an adhesive layer () made from an adhesive composition and coating the reinforcing element (), an elastomeric bonding layer () made from an elastomeric bonding composition and directly coating the adhesive layer (), and an elastomeric body made from an elastomeric matrix and embedded in which is the reinforcing element () coated with the adhesive layer () and with the elastomeric bonding layer (). The adhesive composition comprises a phenol-aldehyde resin based: on an 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 on an aromatic aldehyde bearing an aldehyde function, comprising at least one aromatic ring.

Composite and power transmission belt

A composite comprises: a reinforcing element (), an adhesive layer () made from an adhesive composition, and an elastomeric body made from an elastomeric matrix comprising an ethylene/alpha-olefin type elastomer and/or a polychloroprene elastomer. The adhesive composition comprises a resin based: on a polyphenol comprising an aromatic ring bearing two hydroxyl functions in the meta position relative to one another, the two positions ortho to one of the hydroxyl functions being unsubstituted; and/or on a monophenol comprising a six-membered aromatic ring bearing a single hydroxyl function, the two ortho positions being unsubstituted, or an ortho position and the para position being unsubstituted, and on a compound comprising an aromatic ring bearing two functions, one of these functions being a hydroxymethyl function and the other being an aldehyde function or a hydroxymethyl function.

An aqueous adhesive composition comprises a thermosetting resin based on: at least one aromatic compound bearing at least two functions, one of these functions being a hydroxymethyl function and the other being an aldehyde function or a hydroxymethyl function, the aromatic compound comprising at least one aromatic ring; and at least 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. Such an adhesive composition may especially be used to join elements made of wood; it constitutes an advantageous alternative to the use of a formaldehyde-based phenolic resin adhesive.

Aqueous adhesive composition comprising a ithermosetting resin

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

The rubber composite comprises a steel reinforcing element coated with an adhesive layer coating at least a portion of the reinforcing element. The adhesive layer comprises an adhesive composition comprising at least one phenol/aldehyde resin based on at least: one aromatic aldehyde and one polyphenol comprising one or more aromatic nucleus/nuclei. The coated steel reinforcing element is embedded in a rubber matrix based on a rubber composition comprising a crosslinking system comprising a content of molecular sulphur ranging from 1 to 5 phr.

Rubber composite reinforced by at least one steel reinforcing element rendered adhesive by an adhesive composition containing aromatic aldehyde and polyphenol

An aqueous adhesive composition includes: a phenol/aldehyde resin and an unsaturated elastomer latex. The phenol/aldehyde resin is based on: an aromatic polyaldehyde bearing at least two aldehyde functional groups and including at least one aromatic nucleus; and a polyphenol including at least one aromatic nucleus. If there is just one aromatic nucleus, the nucleus bears two or three hydroxyl functional groups in a meta position with respect to each other or with respect to one another, with a remainder of the nucleus being unsubstituted. If there are plural aromatic nuclei, at least two of the nuclei each bear two or three hydroxyl functional groups in the meta position with respect to each other or with respect to one another, with two positions ortho to at least one of these hydroxyl functional groups being unsubstituted. The adhesive composition is useable to adhere a textile material to a crosslinkable rubber composition.

Aqueous adhesive composition based on polyaldehyde and 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 &#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.

High-rigidity 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 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 aromatic polyaldehyde selected from 1,3-benzenedicarboxaldehyde, 1,4-benzenedicarboxaldehyde and mixtures of these compounds.

Growing community of inventors

Clermont-Ferrand, France

David Doisneau