Title of Invention	"METHOD FOR PREPARING FLUORINE COMPOUNDS"
Abstract	The invention relates to a method for preparing fluoropropenes of formula (I) CF3CF=CHR, where R is a hydrogen or fluorine atom from at least one compound of formula (la) CF3CF=CFR, where R has the same meaning as in formula (I), said method including the following steps: (i) hydrogenating at least one compound of formula (la) in an adiabatic reactor in the presence of a catalyst with a superstoichiometric amount of hydrogen so as to produce a hydrofluoropropane; (ii) partially condensing the flow from the adiabatic reactor of step (i) so as to produce a gaseous phase fraction, including unreacted hydrogen and a portion of the formed hydrofluoropropane, which is recirculated to step (i), and a liquid phase fraction including the residue of the hydrofluoropropane; (iii) dehydrofluorinating hydrofluoropropane from the liquid fraction of step (ii) using potassium hydroxide in an aqueous reaction medium contained in an agitated reactor so as to produce the fluoropropene of formula (I); and (iv) purifying the fluoropropene obtained in step (iii).

Title of Invention

"METHOD FOR PREPARING FLUORINE COMPOUNDS"

Abstract

The invention relates to a method for preparing fluoropropenes of formula (I) CF3CF=CHR, where R is a hydrogen or fluorine atom from at least one compound of formula (la) CF3CF=CFR, where R has the same meaning as in formula (I), said method including the following steps: (i) hydrogenating at least one compound of formula (la) in an adiabatic reactor in the presence of a catalyst with a superstoichiometric amount of hydrogen so as to produce a hydrofluoropropane; (ii) partially condensing the flow from the adiabatic reactor of step (i) so as to produce a gaseous phase fraction, including unreacted hydrogen and a portion of the formed hydrofluoropropane, which is recirculated to step (i), and a liquid phase fraction including the residue of the hydrofluoropropane; (iii) dehydrofluorinating hydrofluoropropane from the liquid fraction of step (ii) using potassium hydroxide in an aqueous reaction medium contained in an agitated reactor so as to produce the fluoropropene of formula (I); and (iv) purifying the fluoropropene obtained in step (iii).

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Patent Number

272741

Indian Patent Application Number

10165/DELNP/2011

PG Journal Number

18/2016

Publication Date

29-Apr-2016

Grant Date

22-Apr-2016

Date of Filing

22-Dec-2011

Name of Patentee

ARKEMA FRANCE

Applicant Address

420, RUE D' ESTIENNE D'ORVES, F-92700 COLOMBES, FRANCE;

Inventors:

#	Inventor's Name	Inventor's Address
1	WENDLINGER, LAURENT	18, HAMEAU DES PLERRES BLANCHES, F-69510 SOUCIEU EN JARREST, FRANCE;
2	CAVALLINI, GERALDINE	5, RUE HENRI MOISSAN, F-69360 SAINT-SYMPHORIEN D'OZON, FRANCE;
3	SEDAT, PIERRE-MARIE	65 RUE DES GLYCINES, F-69210 FLEURIEUX SUR L'ARBRESLE, FRANCE;
4	AVRIL, KARINE	8, RUE VAUBAN, F-69006 LYON, FRANCE;
5	DEVIC, MICHEL	22, RUE GEORGES CLEMENCEAU, F-69110 SAINTE FOY LES LYON, FRANCE;
6	DOUCET, NICOLAS	373, RUE GARIBALDI, F-69007 LYON, FRANCE;

PCT International Classification Number

C07C 17/25

PCT International Application Number

PCT/FR2010/050990

PCT International Filing date

2010-05-21

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	09.55138	2009-07-23	France