Abstract: The invention relates to a process for the continuous synthesis of a compound of formula (II) Br—(CH2)n+2—COOR, comprising a stage consisting of: (a) the hydrobromination of a compound of formula (I) CH2?CH—(CH2)n—COOR: where, in the formulae (I) and (II), n is an integer of between 7 and 9, and R is chosen from H or a linear or branched alkyl radical comprising from 1 to 10 carbon atoms, in particular methyl, ethyl, isopropyl or propyl, with HBr in the presence of a radical initiator and of at least one solvent; said process being characterized in that the reaction is carried out in the absence of benzene and of toluene and in that, in stage (a), the HBr is injected into the reaction mixture in the gaseous form and in stoichiometric excess.

Abstract: Process for producing aminocarboxylic acid of formula (I): NH3—CH2—(CH2)n—COOH (I) including: (i) reacting the unsaturated carboxylic acid of formula (II): CH?CH—(CH2)n-1—COOH (II) with hydrogen bromide to form the ?-bromoalkanoic acid of formula (iii): Br—CH2—(CH2)n—COOH (III); (ii) reacting the w-bromoalkanoic acid obtained with ammonia in aqueous solution to form a reaction mixture; (iii) separating the reaction mixture of the aminocarboxylic acid of formula (I) and an aqueous solution rich in ammonium bromide; (iv) bringing the aqueous solution rich in ammonium bromide into contact with sodium hydroxide to form ammonia and an aqueous solution rich in sodium bromide; (v) purifying the aqueous solution rich in sodium bromide; (vi) bringing the purified aqueous solution rich in sodium bromide into contact with chlorine to form bromine and an aqueous solution rich in sodium chloride; (vii) reacting the bromine with hydrogen to form hydrogen bromide; and (viii) recycling the hydrogen bromide to step (i).

Abstract: A process for the manufacture of ?-aminoalkanoic acid of formula NH2—(CH2)n—COOH, in which n is an integer from 9 to 11, by reaction of the corresponding ?-bromoalkanoic acid with ammonia, including the following stages: i) reaction of the ?-bromoalkanoic acid with an aqueous excess ammonia solution, and ii) separation of the ?-aminoalkanoic acid formed from the reaction mixture. The aqueous ammonia solution exhibits a concentration of 35% to 70% by weight, and stage i) is carried out under a pressure greater than atmospheric pressure, from 0.11 to 2.0 MPa absolute.

Abstract: The invention relates to a process for producing at least one alkoxylated polyphenol comprising the following successive steps: (a) reacting at least one polyphenol, at least one alkoxylating agent, at least one catalyst, in the presence of at least one alkoxylated polyphenol as a solvent, the polyphenol/polyphenol alkoxylated weight ratio as a solvent being less than 2, preferably less than or equal to 1.5, more preferably less than or equal to 1, even more preferably less than or equal to 0.5; and (b) removing the residual alkoxylating agent.

Abstract: The present invention relates to a composition which comprises at least one ?,?-amino-alkanoic acid or ester and at least one alkanoic ester or acid, characterised in that: the ?,?-amino-alkanoic acid or ester has formula H2N—(CH2)n-COOR, wherein n=9 to 13 and R is an alkyl group or a hydrogen; the alkanoic ester or acid has formula R1—COOR2, wherein R1 is a straight or branched alkyl group with formula CmH2m+1 or CmH2m?3, wherein m=6 to 20 and R2 is an alkyl group or a hydrogen; the molar ratio between the alkanoic acid(s) or ester(s) and the ?,?-amino-alkanoic acid(s) or ester(s) is in the range from 0.001 to 0.4%. The present invention also relates to novel methods for obtaining such a composition.

Abstract: The invention relates to a compound of formula (I), wherein: A1 and A2 represent, independently of one another, a binding group comprising at least one nitrogen atom; Q1 and Q2 represent, independently of one another, a linkage group; and x is an integer between 2 and 6, preferably between 3 and 6. The invention also relates to a rubber composition comprising said compound.

Abstract: The invention relates to a compound of formula (I), wherein: A represents a binding group comprising at least one nitrogen atom; Q1 and Q2 represent, independently of one another, a linkage group; x is an integer between 2 and 6; and Z represents the group of formula (I), wherein each R? represents, independently, an alkyl group having between 1 and 4 carbon atoms. The invention also relates to a rubber composition comprising said compound.

Abstract: The invention relates to the production of acrolein and/or acrylic acid from glycerol, and more particularly to a method for continuous production of a stream comprising acrolein by dehydration of glycerol, comprising cycles of reaction and regeneration of a dehydration catalyst.

Abstract: The invention relates to a process for producing at least one alkoxylated polyphenol comprising the following successive steps: (a) reacting at least one polyphenol, at least one alkoxylating agent, at least one catalyst, in the presence of at least one alkoxylated polyphenol as a solvent, the polyphenol/polyphenol alkoxylated weight ratio as a solvent being less than 2, preferably less than or equal to 1.5, more preferably less than or equal to 1, even more preferably less than or equal to 0.

Abstract: The present invention relates to a composition which comprises at least one ?,?-amino-alkanoic acid or ester and at least one alkanoic ester or acid, characterised in that: the ?,?-amino-alkanoic acid or ester has formula H2N-(CH2)n—COOR, wherein n=9 to 13 and R is an alkyl group or a hydrogen; the alkanoic ester or acid has formula R1-COOR2, wherein R1 is a straight or branched alkyl group with formula CmH2m+1 or CmH2m?3, wherein m=6 to 20 and R2 is an alkyl group or a hydrogen; the molar ratio between the alkanoic acid(s) or ester(s) and the ?,?-amino-alkanoic acid(s) or ester(s) is in the range from 0.001 to 0.4%. The present invention also relates to novel methods for obtaining such a composition.

Abstract: The present invention relates to the manufacture of biobased acrylic acid from glycerol as starting material, the term “biobased acid” indicating that the acrylic acid is essentially based on a carbon source of natural origin.

Abstract: The present invention relates to formulations for inhibiting the corrosion of the metals used in the oil industry, and more generally in all types of industries for drilling for fossil compounds or ores, such as gas or oil. The corrosion-inhibiting formulations are stable during storage, and have improved properties due to the presence of at least one compound having at least one triazine unit. The invention also relates to the use of at least one compound comprising at least one triazine unit in a corrosion-inhibiting formulation, as well as to the use of said corrosion-inhibiting formulation in the oil, gas and mining industry.

Abstract: The present invention relates to the manufacture of biobased acrylic acid from glycerol as starting material, the term “biobased acid” indicating that the acrylic acid is essentially based on a carbon source of natural origin.

Abstract: The invention relates to the production of acrolein and/or acrylic acid from glycerol, and more particularly to a method for continuous production of a stream comprising acrolein by dehydration of glycerol, comprising cycles of reaction and regeneration of a dehydration catalyst.

Abstract: The invention relates to the production of acrolein and/or acrylic acid from glycerol, and more particularly to a method for continuous production of a stream comprising acrolein by dehydration of glycerol, comprising cycles of reaction and regeneration of a dehydration catalyst.

Abstract: The present invention relates to formulations for inhibiting the corrosion of the metals used in the oil industry, and more generally in all types of industries for drilling for fossil compounds or ores, such as gas or oil. The corrosion-inhibiting formulations are stable during storage, and have improved properties due to the presence of at least one compound having at least one triazine unit. The invention also relates to the use of at least one compound comprising at least one triazine unit in a corrosion-inhibiting formulation, as well as to the use of said corrosion-inhibiting formulation in the oil, gas and mining industry.

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: A catalyst composition comprising at least an heteropolyacid deposited on a porous titania carrier. A catalyst composition comprising at least an heteropolyacid in which protons in the heteropolyacid may be partially exchanged by at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements that have been deposited on a porous titania carrier. A method for preparing the catalyst composition, comprising impregnating a titania carrier with a solution of at least one metal selected from elements belonging to the Group 1 to Group 16 of the Periodic Table of Elements or onium, drying and firing the resulting solid mixture, secondly impregnating the resulting solid mixture with a solution of heteropolyacid, drying, and firing the resulting solid mixture. A process for preparing acrolein and acrylic acid by dehydration of glycerin, carried out in the presence of the catalyst.

Abstract: The invention relates to the production of acrolein and/or acrylic acid from glycerol, and more particularly to a method for continuous production of a stream comprising acrolein by dehydration of glycerol, comprising cycles of reaction and regeneration of a dehydration catalyst.

Abstract: A catalyst composition comprising at least an heteropolyacid deposited on a porous titania carrier. A catalyst composition comprising at least an heteropolyacid in which protons in the heteropolyacid may be partially exchanged by at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements that have been deposited on a porous titania carrier. A method for preparing the catalyst composition, comprising impregnating a titania carrier with a solution of at least one metal selected from elements belonging to the Group 1 to Group 16 of the Periodic Table of Elements or onium, drying and firing the resulting solid mixture, secondly impregnating the resulting solid mixture with a solution of heteropolyacid, drying, and firing the resulting solid mixture. A process for preparing acrolein and acrylic acid by dehydration of glycerin, carried out in the presence of the catalyst.