Method For Producing 2 3 3 3 Tetrafluoropropene And Recycling 1 1 1 2

Method For Producing 2 3 3 3 Tetrafluoropropene And Recycling 1 1 1 2 2 Pentafluoropropane Free Of Impurities

Abstract: The invention relates to a method for purifying 1 1 1 2 2 pentafluoropropane (245cb) using a first composition comprising 1 1 1 2 2 pentafluoropropane and at least one of the compounds selected from the group consisting of 1 1 difluoroethane (152a) 1 1 1 2 tetrafluoroethane (134a) trans 1 3 3 3 tetrafluoro 1 propene (1234ze E) cis 1 3 3 3 tetrafluoro 1 propene (1234ze Z) trans 1 2 3 3 3 pentafluoropropene (1225ye E) cis 1 2 3 3 3 10 pentafluoropropene (1225ye Z) and 3 3 3 trifluoropropene (1243zf) 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 distillation of said second composition in order to form i) a third composition comprising said organic extraction agent and said at least one of the compounds selected from the group consisting of 1 1 difluoroethane (152a) 1 1 1 2 tetrafluoroethane (134a) trans 1 3 3 3 tetrafluoro 1 propene (1234ze E) cis 1 3 3 3 tetrafluoro 1 propene (1234ze Z) trans 1 2 3 3 3 pentafluoropropene (1225ye E) cis 1 2 3 3 3 pentafluoropropene (1225ye Z) and 3 3 3 trifluoropropene(1243zf); and ii) a stream comprising the 1 1 1 2 2 pentafluoropropane; and c) recovery and separation of said third composition. The invention also relates to a method for producing 1234yf including the method for purifying 1 1 2 2 pentafluoropropane.

Patent Information

Application #

Filing Date

18 April 2018

Publication Number

36/2018

Publication Type

INA

Invention Field

CHEMICAL

Status

Email

Parent Application

Patent Number

Legal Status

Grant Date

2021-02-23

Renewal Date

Applicants

ARKEMA FRANCE

420 rue dEstienne dOrves 92700 Colombes

Inventors

1. BABA AHMED Abdelatif

5 all??e de Miramas 69190 Saint fons

2. COLLIER Bertrand

32 rue Fr??re Benoit 69230 Saint genis laval

3. DEUR BERT Dominique

284F Chemin du Montellier 69390 Charly

4. WENDLINGER Laurent

18 Hameau des Pierres Blanches 69510 Soucieu En Jarrest

Specification

Documents

Application Documents

#	Name	Date
1	201817014735-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [18-04-2018(online)].pdf	2018-04-18
2	201817014735-STATEMENT OF UNDERTAKING (FORM 3) [18-04-2018(online)].pdf	2018-04-18
3	201817014735-PRIORITY DOCUMENTS [18-04-2018(online)].pdf	2018-04-18
4	201817014735-POWER OF AUTHORITY [18-04-2018(online)].pdf	2018-04-18
5	201817014735-FORM 1 [18-04-2018(online)].pdf	2018-04-18
6	201817014735-DRAWINGS [18-04-2018(online)].pdf	2018-04-18
7	201817014735-DECLARATION OF INVENTORSHIP (FORM 5) [18-04-2018(online)].pdf	2018-04-18
8	201817014735-COMPLETE SPECIFICATION [18-04-2018(online)].pdf	2018-04-18
9	201817014735.pdf	2018-04-19
10	201817014735-Proof of Right (MANDATORY) [31-05-2018(online)].pdf	2018-05-31
11	201817014735-FORM 3 [31-05-2018(online)].pdf	2018-05-31
12	abstract.jpg	2018-06-01
13	201817014735-OTHERS-060618.pdf	2018-06-18
14	201817014735-Correspondence-060618.pdf	2018-06-18
15	201817014735-Verified English translation (MANDATORY) [29-06-2018(online)].pdf	2018-06-29
16	201817014735-FORM 3 [29-06-2018(online)].pdf	2018-06-29
17	201817014735-FORM 18 [17-12-2019(online)].pdf	2019-12-17
18	201817014735-OTHERS [29-10-2020(online)].pdf	2020-10-29
19	201817014735-FORM-26 [29-10-2020(online)].pdf	2020-10-29
20	201817014735-FORM 3 [29-10-2020(online)].pdf	2020-10-29
21	201817014735-FER_SER_REPLY [29-10-2020(online)].pdf	2020-10-29
22	201817014735-DRAWING [29-10-2020(online)].pdf	2020-10-29
23	201817014735-CLAIMS [29-10-2020(online)].pdf	2020-10-29
24	201817014735-PatentCertificate23-02-2021.pdf	2021-02-23
25	201817014735-IntimationOfGrant23-02-2021.pdf	2021-02-23
26	201817014735-FER.pdf	2021-10-18

Search Strategy

1	2020-04-2914-23-16201817014735E_29-04-2020.pdf