Centre National De La Recherche Scientifique

Universitë De Bordeaux

Institut Polytechnique De Bordeaux

Arianegroup Sas

Institut Des Corps Gras Etudes Et Recherches Techniques-iterg

Pivert

Etienne Grau

Henri Cramail

Stéphane Grelier

Brigitte Defoort

Stéphane Carlotti

Etienne Savonnet

Audrey Llevot

Stephane Grelier

Stephane Carlotti

Carine Alfos

Daniel Taton

Lise Maisonneuve

Didier Pintori

Blandine Testud

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

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 polymer is provided having at least one repetitive unit represented by the following formula: And, preferably at least one, preferably at least two, repetitive units represented by the following formula: 

Branched polymers, their preparation process, and uses therof

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

A compound is of formula (I): in which Aand A' are independently from each other a linear or branched alkylene radical including from 1 to 20 carbon atom(s); Ais in particular a linear or branched alkylene radical including from 1 to 200 carbon atom(s); Ais H or a linear or branched alkyl radical including from 1 to 15 carbon atom(s) and Rand R&#x2032; are independently from each other H or a linear or branched alkyl radical comprising from 1 to 20 carbon atom(s). The compounds of formula (I) can be used in particular for the preparation of poly(hydroxyurethane)s and epoxy resins.

Five-membered cyclic biscarbonates bearing amide linkages, their preparation and their uses for the preparation of polymers

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Talence, France

Etienne Grau