Compagnie Generale Des Etablissements Michelin

Clement Michoud

David Doisneau

Mickael Rouby

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

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.

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Clermont-Ferrand, France

Clement Michoud