1
Jean-luc Dubois
Jean Luc Dubois: Method for the synthesis of omega-unsaturated fatty acids. Arkerna France, Arkema, Patent Department 26th Floor, August 26, 2010: US20100216198-A1

The invention relates to a method for the synthesis of short-chain ω-unsaturated fatty acids of general formula CH2═CH—(CH2)n—COOR in which n is an integer between 2 and 11 and R is H or an alkyl radical containing from 1 to 4 carbon atoms, from long-chain monounsaturated fatty acids or esters of fo ...


2
Jean-luc Dubois
Jean Luc Dubois: Method for the coproduction of methyl 7-oxoheptanoate and undecylenic acid from ricinoleic acid. Arkema France, Arkema, Patent Department 26th Floor, August 12, 2010: US20100203600-A1

The invention relates to a method for converting ricinoleic acid that comprises the following successive stages: a) fermentation of ricinoleic acid by a bacterium, a yeast or a fungus, in order to obtain 7-hydroxy-9-octadecenedioic diacid,b) the esterification of the 7-hydroxy-9-octadecenedioic diac ...


3
Jean-luc Dubois
Jean Luc Dubois, Wataru Ueda, Yusuke Endo: Process for Preparing Improved Catalysts for Selective Oxidation of Propane Into Acrylic Acid. Arkema France, Arkema, Patent Department 26th Floor, August 14, 2008: US20080194871-A1

The invention concerns the selective oxidation of propane into acrylic acid using highly selective catalysts and relates more particularly to a process for preparing these improved catalysts and their use for the production of acrylic acid from propane. The improved catalysts having the formula: Mo1 ...


4
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfgang Holderich: Process For Dehydrating Glycerol To Acrolein. Arkema France, Arkema, Patent Department 26th Floor, June 19, 2008: US20080146852-A1

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 ...


5
Jean-luc Dubois
Jean Luc Dubois: Acrylic acid preparation method. Arkema France, Arkema, Patent Department 26th Floor, January 15, 2009: US20090018362-A1

The invention relates to a method for preparing acrylic acid from propylene, comprising the oxidation of propylene to acrolein and a second step comprising the oxidation of acrolein to acrylic acid, including a glycerol dehydration step preformed in the presence of a gas containing propylene and, mo ...


6
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfang Holderich, Jacques Kervennal: Process for Dehydrating Glycerol to Acrolein. Arkema France, Arkema, Patent Department 26th Floor, September 4, 2008: US20080214880-A1

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.


7
Jean-luc Dubois
Jean Luc Dubois: Method for synthesis of acrolein from glycerol. Arkema France, Arkema, Patent Department 26th Floor, October 28, 2010: US20100274038-A1

The invention provides a technology for producing acrolein from glycerol while maintaining high reagent partial pressures, which leads to higher yield. The invention more particularly relates to a method for producing acrolein from glycerol that comprises the intermediate step of forming glycerol an ...


8
Jean-luc Dubois
Jean Luc Dubois, Christophe Duquenne, Wolfgang Holderich: Method for Producing Acrylic Acid from Glycerol. Arkema France, Arkema, Patent Department 26th Floor, July 31, 2008: US20080183013-A1

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.


9
Jean-luc Dubois
Jean Luc Dubois: Methods for the synthesis of fatty diacids by the metathesis of unsaturated diacids obtained by fermentation of natural fatty acids. Arkema France, Arkema, Patent Department 26th Floor, August 5, 2010: US20100196973-A1

The invention relates to a method for the synthesis of diacids of general formula ROOC—(CH2)n—(CH═CH)n—(CH2)mCOOR1 in which n and m are identical or different and each represent an integer such that their sum is between 6 and 15, a is an index of 0 or 1, and R and R1 are H or an alkyl radical with 1 ...


10
Jean-luc Dubois
Jean Luc Dubois: Method for the synthesis of omega-amino-alkanoic acids. Arkema France, Arkema, Patent Department 26th Floor, July 1, 2010: US20100168453-A1

The invention relates to a method for the synthesis of amino acids/esters of general formula NH2—(CH2)n—COOR in which n is an integer between 5 and 14, and R is either H or an alkyl radical including from 1 to 4 carbon atoms, from natural long-chain mono-unsaturated fatty acids or esters including a ...



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