Roquette Freres

A Et a Mader

Cargill Inc.

Centre Technique Du Papier

Laura Crowther-Alwyn

Clothilde Buffe

David Guerin

Joël Roussel

Arnaud Verraes

Cyril Barquant

Medhi Carre

Michel Simon

Jérémie Viguie

William Gourgeon

Caroline Locre

Richard Thalhofer

Joel Roussel

The present invention relates to an alkyd resin as well as to a method for preparing such a resin, said alkyd resin resulting from the polycondensation:

Biosourced alkyd resin and method for manufacturing such an alkyd resin

Disclosed is a method for thickening or dehydrating sludge, which includes at least: a) a step of adding flocculants to the sludge to be treated; b) a step of flocculation by agitation of the sludge with the flocculants thus added in order to form a mixture of flocks and an aqueous solution; c) a step of mechanical separation of the flocks and the aqueous solution formed during the preceding step; d) a step of recovering the aqueous solution and the flocks that make up a treated sludge; wherein: the added flocculants are made up of at least one cationic starch (S) and at least one cationic polyacrylamide (P); the cationic starch or starches (S) including a fixed weight percentage of nitrogen of at least 2%; and the weight ratio (R) w/(w+w), expressed as solids, is included between 0.6 and 0.99.

Method for thickening or dehydrating sludge

The object of a present invention is an alkyd resin as well as the method for preparing such a resin, said alkyd resin comprising:

Biobased alkyd resin and process for manufacturing such an alkyd resin

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Grenoble, France

Laura Crowther-Alwyn