"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).

Patent Information

Application #

Filing Date

22 December 2011

Publication Number

42/2012

Publication Type

INA

Invention Field

CHEMICAL

Status

Email

Parent Application

Patent Number

Legal Status

Grant Date

2016-04-22

Renewal Date

Applicants

ARKEMA FRANCE

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

Inventors

1. DEVIC, MICHEL

22, RUE GEORGES CLEMENCEAU, F-69110 SAINTE FOY LES LYON, FRANCE;

2. DOUCET, NICOLAS

373, RUE GARIBALDI, F-69007 LYON, FRANCE;

3. WENDLINGER, LAURENT

18, HAMEAU DES PLERRES BLANCHES, F-69510 SOUCIEU EN JARREST, FRANCE;

4. CAVALLINI, GERALDINE

5, RUE HENRI MOISSAN, F-69360 SAINT-SYMPHORIEN D'OZON, FRANCE;

5. SEDAT, PIERRE-MARIE

65 RUE DES GLYCINES, F-69210 FLEURIEUX SUR L'ARBRESLE, FRANCE;

6. AVRIL, KARINE

8, RUE VAUBAN, F-69006 LYON, FRANCE;

Specification

NA

Documents

Application Documents

#	Name	Date
1	10165-delnp-2011-Form-18-(28-12-2011).pdf	2011-12-28
2	10165-delnp-2011-Correspondence-Others-(28-12-2011).pdf	2011-12-28
3	10165-delnp-2011-Correspondence-Others-(23-02-2012).pdf	2012-02-23
4	10165-delnp-2011-Correspondence-Others-(06-03-2012).pdf	2012-03-06
5	10165-delnp-2011-Form-3-(16-05-2012).pdf	2012-05-16
6	10165-delnp-2011-Correspondence-Others-(16-05-2012).pdf	2012-05-16
7	10165-delnp-2011-Form-5.pdf	2012-07-16
8	10165-delnp-2011-Form-3.pdf	2012-07-16
9	10165-delnp-2011-Form-2.pdf	2012-07-16
10	10165-delnp-2011-Form-1.pdf	2012-07-16
11	10165-delnp-2011-Description (Complete).pdf	2012-07-16
12	10165-delnp-2011-Correspondence-others.pdf	2012-07-16
13	10165-delnp-2011-Claims.pdf	2012-07-16
14	10165-delnp-2011-Abstract.pdf	2012-07-16
15	10165-delnp-2011-Others-(13-01-2016).pdf	2016-01-13
16	10165-delnp-2011-Marked Claims-(13-01-2016).pdf	2016-01-13
17	10165-delnp-2011-GPA-(13-01-2016).pdf	2016-01-13
18	10165-delnp-2011-Form-1-(13-01-2016).pdf	2016-01-13
19	10165-delnp-2011-FER Response-(13-01-2016).pdf	2016-01-13
20	10165-delnp-2011-Claims-(13-01-2016).pdf	2016-01-13
21	10165-DELNP-2011_EXAMREPORT.pdf	2016-06-30
22	Form 27 [26-03-2017(online)].pdf	2017-03-26
23	10165-DELNP-2011-RELEVANT DOCUMENTS [17-03-2018(online)].pdf	2018-03-17
24	272741-10165-DELNP-2011.pdf	2018-12-10
25	10165-DELNP-2011-RELEVANT DOCUMENTS [21-03-2019(online)].pdf	2019-03-21
26	10165-DELNP-2011-RELEVANT DOCUMENTS [28-03-2020(online)].pdf	2020-03-28