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Dubois Jean Luc, Duquenne Christophe, Hölderich Wolfgang: (Fr) Procede de preparation d’acide acrylique a partir de glycerol, (En) Method for producing acrylic acid from glycerol. Arkema France, Dubois Jean Luc, Duquenne Christophe, Hölderich Wolfgang, BONNEL Claudine, November 2, 2006: WO/2006/114506 (25 worldwide citation)

(EN) The invention relates to a method for producing acrylic acid in one step by an oxydehydration reaction of glycerol in the presence of molecular oxygen. The reaction is preferably carried out in gaseous phase in the presence of a suitable catalyst.(FR) La présente invention concerne un procédé d ...


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Dubois Jean Luc, Duquenne Christophe, Hölderlich Wolfgang: Process for dehydrating glycerol to acrolein. Arkema France, Dubois Jean Luc, Duquenne Christophe, Hölderlich Wolfgang, BONNEL Claudine, August 24, 2006: WO/2006/087083 (20 worldwide citation)

The present invention relates to a process for manufacturing acrolein by dehydration of glycerol in the presence of molecular oxygen. The reaction is performed in the liquid phase or in the gas phase in the presence of a solid catalyst. The addition of oxygen makes it possible to obtain good glycero ...


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DUBOIS Jean Luc, PICCIRILLI Antoine, MAGNE Julien: Procede de purification dun ester alkylique dacide gras par extraction liquide/liquide, Method for purifying a fatty-acid alkyl ester by liquid/liquid extraction. Arkema France, DUBOIS Jean Luc, PICCIRILLI Antoine, MAGNE Julien, HERARD Elise, January 12, 2012: WO/2012/004489 (14 worldwide citation)

The present invention relates to a method for selectively extracting monoglycerides present in a blend of fatty acid alkyl esters (FAAEs), which includes at least one liquid-liquid extraction step using a polar solvent (PS), comprising a light alcohol, and optionally an apolar solvent (AS), comprisi ...


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Dubois Jean Luc, Duquenne Christophe, Hölderich Wolfgang, Kervennal Jacques: Process for dehydrating glycerol to acrolein. Arkema France, Dubois Jean Luc, Duquenne Christophe, Hölderich Wolfgang, Kervennal Jacques, BONNEL Claudine, August 24, 2006: WO/2006/087084 (14 worldwide citation)

The present invention relates to a process for manufacturing acrolein by gas-phase dehydration of glycerol in the presence of strongly acidic solid catalysts with a Hammett acidity H0 of between -9 and -18 and preferably between -10 and -16.


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Cohen Gerard, Dubois Jean Luc: Biodegradable injectable microspheres. Roussel Uclaf, July 17, 1991: GB2239798-A (10 worldwide citation)

Biodegradable microspheres contain a lactic acid and glycolic acid copolymer and an anti-oestrogen or anti-progestomimetic steroid. The microspheres can be formulated with an aqueous or oily vehicle to form an injectable suspension useful as a medicament. With such a medicament the release period of ...


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Dubois Jean Luc, Duquenne Christophe, Holderich Wolfgang: Preparation of acrolein comprises dehydration of glycerol in the presence of molecular oxygen, with a quantity far from the explosive range at any point of installation. Arkema, August 18, 2006: FR2882052-A1 (10 worldwide citation)

Preparation of acrolein comprises dehydration of glycerol in the presence of molecular oxygen, with a quantity far from the explosive range at any point of installation.


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Dubois Jean Luc: Process for the preparation of acrylic acid from propane in the absence of molecular oxygen. Atofina, September 11, 2002: EP1238960-A1 (9 worldwide citation)

An acrylic acid is obtained from propane by passing a mixture of propane, water and an inert gas over a heated mixed oxide comprising Mo. V, Te, Nb and Si, the gaseous mixture does not contain molecular oxygen. The solid oxide has the following composition :- Mo1VaTebNbcSidOx. a, b and c = 0.006 - 1 ...


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Dubois Jean Luc: Procede de synthese dacetals cycliques dans un reacteur a lit mobile simule. Arkema France, March 28, 2008: FR2906246-A1 (9 worldwide citation)

L'invention a pour objet un procédé de synthèse d'acétals cycliques par réaction d'au moins un aldéhyde et/ou une cétone sur un polyol, utilisant un réacteur à lit mobile simulé dont les colonnes sont garnies d'un lit d'un solide acide susceptible d'adsorber sélectivement l'un des produits de la réa ...


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Dubois Jean Luc, Payen Edmond, Blanchard Pascal, Griboval Anne: Procede de preparation de catalyseurs dhydrotraitement. Elf Antar France, December 11, 1998: FR2764211-A1 (8 worldwide citation)

The invention concerns a method for preparing catalysts, containing metals of groups VI and VIII in the same molecule on the support. Metals of groups VI and VIII are introduced in the form of a compound of formula Mx A B11 O40 M' C(z - 2x), t H2O in which M is cobalt and/or nickel, A is phosphorus, ...