Arkema France

Laurent Wendlinger

Dominique Deur-Bert

Anne Marie Pigamo

Bertrand Collier

Nicolas Doucet

Philippe Bonnet

Dominique Garrait

Michel Devic

Abdelatif Baba-Ahmed

Audrey Riehl

Geraldine Cavallini

Pierre-Marie Sedat

David Andre

Joaquin Lacambra

Dominque Deur-Bert

Wissam Rached

Kevin Hisler

Béatrice Boussand

Dominique Guillet

Emmanuel Boussarie

Emmanuel Guiraud

Karine Avril

Irène Emery

Géraldine Cavallini

Dominique Duer-Bert

Béatrice Berger

A process for preparing a compound of formula (I) HRRC—CF—(C═O)—Y starting with a compound of formula (II) RRC═CX—(C═O)—Y or of formula (III) HRRC—CXX—(C═O)—Y placed in contact with hydrofluoric acid; Rand Rbeing independently selected from H, F, Cl, Br, I, C-C-alkyl, C-C-aryl and C-C-alkenyl, C-C-cycloalkenyl and C-C-cycloalkyl; Xand Xbeing independently selected from F, Cl, Br and I on condition that Xand Xare not simultaneously F; Y being selected from the group of H, C-C-alkyl, C-C-haloalkyl, C-C-aryl, —OH, —OR, —NH, —NHR, —NR, —SR, C-C-cycloalkyl, C-C-cycloalkenyl and C-C-alkenyl; R being independently selected from the group of C-C-alkyl, C-C-aryl and C-C-alkenyl, C-C-cycloalkenyl and C-C-cycloalkyl.

Method for preparing fluoroorganic compounds

The invention relates to a container housing a composition comprising tetrafluoropropene. The container is made from metal and includes an inner surface, said inner surface being in contact with the composition and being at least partially covered with a coating containing zinc. Advantageously, the aforementioned composition comprises at least 15 wt.-% tetrafluoropropene relative to the total weight of the composition.

Container for storing a composition comprising tetrafluoropropene and method for storing same

The present invention relates to a method for producing high-purity 1,1,1,2,3,3-hexafluoropropane and a composition containing mainly 1,1,1,2,3,3-hexafluoropropane, suitable for use as a cleaning agent in the semiconductor industry.

High-purity 1,1,1,2,3,3-hexafluoropropane, method for producing same and use thereof

The present invention relates to a process for modifying the fluorine distribution in a hydrocarbon compound, comprising a step of making contact between said hydrocarbon compound and a catalytic composition comprising a chromium-based catalyst, said process being performed in a reactor made of a material comprising a base layer made of a material M1 and an inner layer made of a material M2, said base layer and said inner layer being laid against each other by bonding.

Method for modifying fluorine distribution in a hydrocarbon compound

A process for manufacturing tetrafluoropropene, including, alternately: at least one step of reacting a chlorinated compound with hydrofluoric acid in the gas phase, in the presence of a fluorination catalyst, the proportion of oxygen optionally present being less than 0.05 mol. % relative to the chlorinated compound; a step of regenerating the fluorination catalyst by bringing the fluorination catalyst into contact with a regeneration stream including an oxidizing agent. Also, equipment suitable for carrying out this process.

Process for manufacturing tetrafluoropropene

The invention relates to a method for producing and purifying 2,3,3,3-tetrafluoro-1-propene using a first composition comprising 2,3,3,3-tetrafluoro-1-propene, 3,3,3-trifluoropropene (1243zf), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), said method comprising the steps of: (a) bringing said first composition into contact with at least one organic extraction agent in order to form a second composition; (b) extractive distilaation of said second composition in order to form (i) a third composition comprising said organic extraction agent, 3,3,3-trifluoropropene (1243zf), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), and (ii) a stream comprising the 2,3,3,3-tetrafluoro-1-propene; and (c) recovery and separation of said third composition in order to form a stream comprising said organic extraction agent and a stream comprising 3,3,3-trifluoropropene (1243zf) and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E).

Method for producing and purifying 2,3,3,3-tetrafluoro-1-propene

The present invention relates to a catalyst comprising a) from 90% to 99.99% by weight of alumina in which said alumina is at least 90% by weight &#x3b1;-alumina and b) from 0.01% to 10% by weight of at least one metal of valency 0 selected from the group consisting of Pd, Ru, Pt, Rh and Ir, characterized in that the chloride content of said catalyst is less than 500 ppm, based on the total weight of the catalyst.

Alpha-alumina-based catalyst and process for hydrogenation of an olefin in the presence thereof

The present invention relates to a process for producing 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), comprising: i) providing a stream A1 comprising HF, a stream A2 comprising 1,1,3,3-tetrachloropropene and/or 1,3,3,3-tetrachloropropene, and a reactor containing a liquid phase, ii) in said reactor, contacting, in said liquid phase, said stream A1 comprising HF with said stream A2 comprising 1,1,3,3-tetrachloropropene and/or 1,3,3,3-tetrachloropropene under conditions which are sufficient to produce a stream C comprising 1-chloro-3,3,3-trifluoropropene, HF and HCl, iii) recovering said stream C, characterized in that said reactor is provided with means for stirring said liquid phase so as to keep the temperature of said liquid phase substantially constant during step ii).

Method for producing 1-chloro-3,3,3-trifluoropropene

A process for producing 2,3,3,3-tetrafluoropropene comprises the steps: i) in a first adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing 2-chloro-3,3,3-trifluoropropene into contact with hydrofluoric acid in the gas phase in the presence of a catalyst to produce a stream A comprising 2,3,3,3-tetrafluoropropene, HF and unreacted 2-chloro-3,3,3-trifluoropropene; and ii) in a second adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing hydrofluoric acid into contact in the gas phase, optionally in the presence of a catalyst, with at least one chlorinated compound to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene. The stream A obtained in step i) feeds said second reactor. The inlet temperature of the fixed bed of one of said first or second reactors is between 300&#xb0; C. and 400&#xb0; C. The longitudinal temperature difference between the inlet and the outlet of the fixed bed in question is less than 20&#xb0; C.

Process for producing 2,3,3,3-tetrafluoropropene, and reactor for carrying out said process

The present invention relates to a method for storing, in a closed container, a composition comprising 1,1,1,2,3,3-hexafluoropropane in a liquid/gas state composed of a liquid phase and of a gas phase, characterized in that i) a stream comprising 1,1,1,2,3,3-hexafluoropropane is injected into said container, said stream comprising an oxygen concentration of at most 5000 ppm by volume at a temperature of 25&#xb0; C., and ii) the container is closed after injection of said stream. The present invention also relates to a container for storing 1,1,1,2,3,3-hexafluoropropane.

Method for storing 1,1,1,2,3,3-hexafluoropropane and container for storing same

The present invention relates to a process for producing 2-chloro-3,3,3-trifluoropropene, comprising the steps: i) providing a stream A comprising at least one chlorinated compound selected from the group consisting of 2,3-dichloro-1,1,1-trifluoropropane, 1,1,1,2,3-pentachloropropane, 1,1,2,3-tetrachloropropene and 2,3,3,3-tetrachloropropene; and ii) in an adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing said stream A into contact, in the presence or absence of a catalyst, with HF in order to produce a stream B comprising 2-chloro-3,3,3-trifluoropropene, characterized in that the temperature at the inlet of the fixed bed of said adiabatic reactor is between 300&#xb0; C. and 400&#xb0; C. and the longitudinal temperature difference between the inlet of the fixed bed and the outlet of the fixed bed of said reactor is less than 20&#xb0; C.

Method for producing 2-chloro-3,3,3-trifluoropropene and facility for implementing same

A process for producing 2,3,3,3-tetrafluoropropene comprises i) in a first adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing hydrofluoric acid into contact, in the gas phase with at least one chlorinated compound in order to produce a stream A comprising 2-chloro-3,3,3-trifluoropropene, ii) in a second adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing the stream A into contact, in the gas phase in the presence of a catalyst, with hydrofluoric acid, to produce a stream B comprising 2,3,3,3-tetrafluoropropene. The temperature at the inlet of the fixed bed of one of said first or second reactors is between 300&#xb0; C. and 400&#xb0; C. The longitudinal temperature difference between the inlet and the outlet of the fixed bed of the reactor is less than 20&#xb0; C.

Process for producing 2,3,3,3-tetrafluoropropene, and system for carrying out same

The present invention relates to a process for producing 2,3,3,3-tetrafluoropropene, comprising the steps: i) providing a stream A comprising at least one starting compound selected from the group consisting of 2-chloro-3,3,3-trifluoropropene and 2,3-dichloro-1,1,1-trifluoropropane; and ii) in an adiabatic reactor comprising a fixed bed composed of an inlet and an outlet, bringing said stream A into contact, in the presence or absence of a catalyst, with HF in order to produce a stream B comprising 2,3,3,3-tetrafluoropropene, characterized in that the temperature at the inlet of the fixed bed of said adiabatic reactor is between 300&#xb0; C. and 400&#xb0; C. and the longitudinal temperature difference between the inlet of the fixed bed and the outlet of the fixed bed of said reactor is less than 20&#xb0; C.

Method for producing 2,3,3,3-tetrafluoropropene and facility for implementing said method

A process for the production of 2,3,3,3-tetrafluoropropene including the stages: i) in a first reactor, bringing a stream A including 2-chloro-3,3,3-trifluoropropene into contact with hydrofluoric acid in the gas phase in the presence of a catalyst in order to produce a stream B including 2,3,3,3-tetrafluoropropene, HCl, HF and unreacted 2-chloro-3,3,3-trifluoropropene; and ii) in a second reactor, bringing hydrofluoric acid into contact, in the gas phase in the presence or not of a catalyst, with a stream including at least one chlorinated compound selected from the group of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, 2,3,3,3-tetrachloropropene and 1,1,2,3-tetrachloropropene, in order to produce a stream C including 2-chloro-3,3,3-trifluoropropene, wherein the stream B obtained in stage i) feeds the second reactor used for stage ii); and wherein the electrical conductivity of the stream A provided in stage i) is less than 15 mS/cm.

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Soucieu en Jarrest, France

Laurent Wendlinger