Centre National De La Recherche Scientifique

Universitë De Bordeaux

Institut Polytechnique De Bordeaux

Arianegroup Sas

Institut National De Recherche Pour L'agriculture, L'alimentation Et L'environnement

Institut National Des Sciences Appiquees De Toulouse (insat)

Papeterie Zuber Rieder

Stéphane Grelier

Henri Cramail

Etienne Grau

Frédéric Peruch

Brigitte Defoort

Stéphane Carlotti

Etienne Savonnet

Audrey Llevot

Pierre Berto

Magali Remaud-Simeon

Isabelle Andre

Pierre Monsan

Claire Moulis

Marlene Vuillemin

David Guieysse

Alvaro Lafraya

Georges Koumba Yoya

Erwan Le Goue

Véronique Coma

Frédérique Ham-pichavant

The present invention concerns new precursors of recyclable cross-linked diene elastomers comprising at least one furanyl group along the chain and comprising chain-end units with furanyl groups, their use in the preparation of said recyclable elastomers and their process of preparation. The invention also concerns new recyclable cross-linked diene elastomers, their preparation process and their uses.

Recyclable cross-linked diene elastomers comprising furanyl groups and precursors thereof

A multi-epoxidized biphenyl compound has the formula (I) below wherein R, R, Rand Rare as defined in the description, as well as mixtures of at least two of the compounds. These multi-epoxidized biphenyl compounds are fully suitable as main constituents of thermosetting epoxy resins, i.e. as polyepoxides precursors. They are beneficial substitutes for bisphenol A diglycidyl ether.

Polyepoxidized biphenyl compounds, preparation and uses

A difunctional biphenyl compounds corresponding to formula (I) wherein Alk, Alk' and R are as defined in the description. These compounds are suitable as hardeners for thermosetting resins, especially epoxy resins.

Difunctional biphenyl compounds, preparation, and uses

Disclosed are new precursors of recyclable cross-linked diene elastomers including chain-end units with furanyl groups, their use in the preparation of the recyclable elastomers and their process of preparation. Also disclosed are new recyclable cross-linked diene elastomers, their preparation process and their uses.

The present invention relates to a method for producing a glycosylated synthon or a monomer. Said method includes at least one step of placing at least one glycan-saccharase in the presence of at least one hydroxylated synthon and at least one saccharose. The invention also relates to a method for producing a glyco(co)polymer, including polymerizing at least two monomers separately obtained from the enzymatic glycosylation method according to the invention, and to a method for producing a glyco(co)polymer, preferably a block glyco(co)polymer, including coupling at least two monomers separately obtained from the enzymatic glycosylation method according to the invention.

Enzymatic production of glycosylated synthons

The present invention relates to a process for preparing a compound having the formula (I), said process comprising the following steps: a) the addition of an oxygen source into a solution of a compound of formula (II), in a water-miscible solvent, b) the addition of a laccase in the solution obtained after step a); and c) the possible recovering of the compound of formula (I) thus obtained. 

Process for preparing biphenyl compounds

A method for depolymerization of lignin includes oxidizing non-phenolic lignin by putting into presence, in at least one solvent, non-phenolic lignin, laccase, redox mediator and a source of oxygen, whereby a mixture including oxidized non-phenolic lignin is obtained, and further includes depolymerization of the oxidized non-phenolic lignin thereby obtained, by adding an oxidizer. The non-phenolic lignin is obtained from phenolic lignin by functionalization of phenol functions of the phenolic lignin.

Process for depolymerization of lignin by laccases

The present invention concerns the use of a compound having the following formula (I), for the preparation of a polymer. The present invention also concerns the polymers obtained from polymerization of compound of formula (I), and their processes of preparation. 

Phenolic polymers and preparation processes thereof

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Parentis-en-Born, France

Stéphane Grelier