Arkema France

Centre National De La Recherche Scientifique

Université De Rennes 1

Jean Luc Couturier

Jean Luc Dubois

Pierre Dixneuf

Xiaowei Miao

Christian Bruneau

Cedric Fischmeister

The subject matter of the invention is a process for synthesizing a saturated long-chain &#x3b1;,&#x3c9;-amino ester (acid) obtained in a first step by cross-metathesis between an acrylic first compound and a monounsaturated second compound comprising at least one nitrile, acid or ester trivalent function, one of these compounds comprising a nitrile function and the other an acid or ester function, in the presence of a ruthenium carbene metathesis catalyst, and in a second step by hydrogenation of the monounsaturated nitrile ester (acid) obtained in the presence of the metathesis catalyst of the preceding stop, acting as a hydrogenation catalyst.

Process for preparing saturated amino acids or saturated amino esters comprising a metathesis step

The present invention relates to a bio-based glutaraldehyde compound and to the different non-fossil, natural raw material manufacture methods thereof. To prepare said compound, glycerol created by the methanolysis of vegetable oil or animal fat is used, leading after dehydration to acrolein that is caused to react with a vinyl/alkyl/ether as per a Diels-Alder cyclization reaction, followed by hydrolysis so as to obtain the bio-based glutaraldehyde of the invention. Sugars containing five carbon atoms, that is, pentoses created from for example hemicellulose, may also be used, leading after dehydration to furfural, which leads, after complete hydrogenation followed by selective oxidation, to the bio-based glutaraldehyde of the invention.

Bio-based glutaralydehyde, and manufacture methods thereof

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Lyons, France

Jean Luc Couturier