Abstract: The invention relates to methyl methacrylate characterized in that at least one portion of the carbons thereof is biologically sourced and, more specifically, in that it contains between 0.2×10?10 and 1.2×10?10 wt.-% of 14C in relation to total carbon weight according to the ASTM D6866 standard. The preparation method comprises the use of acetone cyanohydrin as a raw material, said acetone cyanohydrin being obtained by condensing cyanohydric acid on acetone, and the methyl methacrylate is prepared using a process involving the addition of methanol. According to the invention, at least one from among the acetone, cyanohydric acid and methanol is obtained by means of a reaction or series of reactions involving the biomass.

Abstract: Disclosed herein a process for the synthesis of diacids or diesters of general formula ROOC—(CH2)x-COOR, in which n represents an integer between 5 and 14 and R is either H or an alkyl radical of 1 to 4 carbon atoms, starting from long-chain natural monounsaturated fatty acids or esters comprising at least 10 adjacent carbon atoms per molecule, of formula CH3—(CH2)n-CHR1—CH2—CH?CH—(CH2)p-COOR, in which R represents H or an alkyl radical comprising from 1 to 4 carbon atoms, R1 is either H or OH, and n and p, which are identical or different, are indices between 2 and 11.

Abstract: The subject matter of the invention is a process for synthesizing ?-functionalized acids of formula R—(CH2)n—COOH in which R is COOH or NH2CH2, from a feedstock of natural origin containing hydroxylated fatty acids.

Abstract: The invention relates to a hydrocyanic acid containing bioresourced carbon, and to a method for producing a raw material mainly containing the same by reacting ammonia with methane or methanol optionally in the presence of air and/or oxygen, characterized in that at least one of the reagents selected from ammonia, methane and methanol is obtained from a biomass. The invention also relates to the uses of the raw material for producing acetone cyanohydrin, adiponitrile, methionine or methionine hydroxyl-analog, and sodium cyanide.

Abstract: The present invention relates to a method for manufacturing methylmercaptopropionaldehyde (MMP) including at least the following steps: (a) dehydrating glycerol to acrolein from an aqueous solution of glycerol in the presence of an acid catalyst; (b) purifying the aqueous flux from step (a) to obtain a flux of acrolein containing at least 15 wt % of water relative to the acrolein; (c) causing a reaction of the acrolein flux obtained in step (b) with methylmercaptan in the presence of a catalyst; (d) optionally purifying the product obtained in step (c). The method of the invention can also include a reaction of the product obtained in step (c) or (d) with hydrocyanic acid, or sodium cyanide during a step (e) followed by a subsequent transformation to produce methionine or methionine hydroxyanalogue, which can then optionally be purified.

Abstract: The invention relates to a method for synthesizing ?-aminoalkanoic acids or esters thereof from unsaturated natural fatty acids, passing through a monounsaturated dinitrile intermediate compound. The method of the invention is simple to carry out and, compared to other known methods, avoids the environmental constraints and economic disadvantages due to reaction by-products.

Abstract: A process including at least one reactive trituration step which includes putting an oil cake including from 3% to 30% oil in contact with an anhydrous light alcohol and an alkaline catalyst under temperature and time conditions that are sufficient to allow for the extraction and transesterification of the vegetable oil and lead to the production of a mixture including fatty acid esters and glycerol, and a de-oiled cake including less than 3% oil. Also, a detoxified de-oiled cake as well as to a mixture of fatty acid esters with improved stability and resistance to oxidation.

Abstract: A chemical reactor including: a plurality of heat exchange plates which between them define reaction compartments, in which reactor each heat exchange plate includes two walls between them defining at least one heat exchange space, the respective walls being fixed together by joining regions, and the reactor also comprises at least one injection device for injecting substance into the reaction compartments, said substance-injection device passing through the heat-exchange plates in respective joining regions thereof. Also, a chemical reaction process that can be carried out in this reactor.

Abstract: The present invention relates to a process for synthesizing acrolein, coupling the dehydration of glycerol into acrolein with a reaction for aldol condensation of acetaldehyde, produced in the form of an impurity during the dehydration, by means of formaldehyde.

Abstract: Disclosed herein is a method for producing alkoxy alkanes by direct partial oxidation of a lower alcohol with a catalyst based upon mixed oxide containing molybdenum and at least one other metal selected from the metals that can assume a trivalent oxidation state such as Fe, Bi, Al, Cr, In, La, Sb, and/or a metal selected from Ni, Co, Cu, V, W, Ti, Ta, Nb, Mn, Sn, P.

Abstract: 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 at least 10 adjacent carbon atoms per molecule, said method comprising: first converting, if necessary, said natural long-chain fatty acid or ester into a monounsaturated fatty acid/ester of general formula R1—(CH2)m—CH?CH—(CH2)p—COOR in which R1 is H, CH3 or a COOR radical, m is an integer between 0 and 14 and p is an integer between 2 and 11, then submitting the latter to a crossed catalytic metathesis reaction with a compound of formula R2—CH?CH—R3 in which R2 is either H or CN and R3 is CN or CH2NH2, provided that if R2 is CN, R3 can be only CN, and finally converting the resulting product of the general formula R3—CH?CH—(CH2)p—COOR into an amino-acid, either by hydrogenation, or by hydrogenation of the triple t

Abstract: A subject of the invention is a compound of formula (I) XCFzR3-z in which: in which X represents a branched or linear unsaturated hydrocarbon radical having up to 5 carbon atoms, unsubstituted or substituted, R represents Cl, F, Br, I or H, Z is equal to 1, 2 or 3, and the bio-carbon content of which is at least 1%. A subject of the invention is also processes for the preparation of this compound.

Abstract: A process for the manufacture of copolymers of ethylene and of at least one vinyl ester, comprising the following steps: a) fermentation of renewable starting materials so as to produce at least one alcohol comprising ethanol; b) dehydration of the alcohol obtained so as to produce at least one alkene comprising ethylene and, optionally, purification of the alkene so as to obtain ethylene, c) copolymerization of the ethylene with at least one vinyl ester, d) isolation of the copolymer obtained. Also, copolymers of ethylene and of at least one vinyl ester in which the ethylene is at least partly obtained from renewable starting materials, and to uses thereof.

Abstract: The invention relates to a process for synthesizing a nitrile-fatty acid (heminitrile) from unsaturated fatty acids, in the form of an acid or a simple ester or a “complex” ester of triglyceride type, which is first of all converted into an unsaturated fatty nitrile which is subjected to oxidative cleavage using H2O2 as oxidizing agent. This process can be used for preparing polyamide monomers, such as ?-amino acids or diamines or diacids equivalent to said heminitrile and for obtaining polyamides from raw materials which are of natural origin and from a renewable source.

Abstract: The present invention relates to the selective elimination of propanal in acrolein-rich streams to produce acrolein and/or acrylic acid and/or acrylonitrile and/or methylmercaptopropionaldehyde containing low amount of propanal and/or propionic acid and/or propionitrile. One subject of the present invention is a process for manufacturing acrolein comprising a step of selective elimination of propanal in an acrolein-rich stream in contact with a catalyst comprising at least molybdenum. Another subject of the present invention is a process for manufacturing acrylic acid from glycerol including a step of selective elimination of propanal in an acrolein-rich stream in contact with a catalyst comprising at least molybdenum.

Abstract: The subject of the present invention is a method for the reactive vaporization of aqueous solutions of glycerol in a fluidized bed containing a reactive solid. The method of the invention makes it possible to simultaneously vaporize an aqueous solution of glycerol, to remove the impurities that are present in this solution or that are generated during the evaporation, and to carry out the dehydration reaction of the glycerol to acrolein and/or the oxydehydration reaction of the glycerol to acrylic acid.

Abstract: A method for producing bioresourced propionic acid from glycerol. Also, a composition comprising more than 85 mass % of bioresourced propionic acid, and to the use of the propionic acid obtained from the method as a solvent, as a food preservative, for producing herbicide or for preparing vinyl propionate.

Abstract: The present invention relates to a process for the selective extraction of monoglycerides present in a fraction of fatty acid alkyl esters (FAAEs), comprising at least one stage of liquid-liquid extraction by means of a polar solvent (PS) comprising a light alcohol and optionally of a nonpolar solvent (NS) comprising a solvent which is immiscible with the light alcohol. The present invention relates in particular to a fraction of fatty acid alkyl esters (FAAEs) of vegetable or animal origin, used in particular in biodiesels, capable of being obtained according to the process of the invention, so that its content of monoglycerides is less than 0.6%.

Abstract: The invention relates to a method for synthesizing 9-aminononanoic acid or the esters thereof from natural unsaturated fatty acids, comprising at least one step of metathesis of the natural fatty acid and an oxidation step by oxidative cleaving. Said synthetic method uses widely available renewable starting materials and hence economical.

Abstract: The invention relates to a process of the selective oxidation of carbon monoxide to carbon dioxide present in a gas mixture comprising at least one hydrocarbon or a hydrocarbon derivative, and to its integration into a process for producing hydrocarbon derivatives. The process according to the invention comprises a step that consists in bringing said gas mixture into contact with a solid catalyst capable of oxidizing carbon monoxide to carbon dioxide at a chosen temperature, characterized on that said step is carried out in a fluidized bed.