IP Library › Granted Patent US 12,391,634
Granted Patent B2
US 12,391,634 · App. 17/557,668 · Granted Aug 19, 2025

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

Inventors: Anne Pigamo (Pierre-Benite, FR); Cédric Lavy (Pierre-Benite, FR)
Assignee: Arkema France
C07C21/18C07C17/206
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Quick Facts
Patent No.
US 12,391,634
App. No.
17/557,668
Granted
Aug 19, 2025
Kind
B2
Abstract

A composition including at least 98 mol % of (E/Z)-1-chloro-3,3,3-trifluoropropene and less than 0.5 mol % of coproducts selected from 1,3,3,3-tetrafluoropropene and 1,1,1,3,3-pentafluoropropane. A composition obtained from a process for producing 1-chloro-3,3,3-trifluoropropene, including the step i) of contacting hydrofluoric acid (HF) in a reactor with a starting composition including at least one of the chloro compounds selected from 1,1,3,3-tetrachloropropene (1230za), 1,3,3,3-tetrachloropropene (1230zd) and 1,1,1,3,3-pentachloropropane (240fa), or a mixture thereof, to produce a stream A including 1-chloro-3,3,3-trifluoropropene (1233zd), wherein the step i) is carried out in a low-HF liquid phase.

Claims (7)

1. A composition consisting of:

at least 99.5 mol %, based on a total molar amount of the composition, of cis and trans 1-chloro-3,3,3-trifluoropropene; and

coproducts,

wherein the coproducts consist of less than 0.3 mol %, based on the total molar amount of the composition, of 1,3,3,3-tetrafluoropropene and less than 0.1 mol %, based on the total molar amount of the composition, of 1,1,1,3,3-pentafluoropropane, and

wherein the composition is obtained at an exit of a reactor carrying out a process carried out in a liquid phase comprising less than 15% by weight of hydrofluoric acid (HF), based on the total weight of said liquid phase.

2. The composition as claimed in claim 1 , wherein the process comprises a step comprising contacting hydrofluoric acid (HF) in a reactor with a starting composition comprising at least one of the chloro compounds selected from the group consisting of 1,1,3,3-tetrachloropropene (1230za), 1,3,3,3-tetrachloropropene (1230zd) and 1,1,1,3,3-pentachloropropane (240fa), or a mixture thereof, to produce a stream A comprising 1-chloro-3,3,3-trifluoropropene (1233zd).

3. The composition as claimed in claim 2 , wherein said liquid phase comprises less than 10% by weight of HF, based on the total weight of said liquid phase.

Assignments (2)
CHANGE OF ADDRESS Recorded Jul 4, 2025
From: ARKEMA FRANCE
To: ARKEMA FRANCE
Reel/Frame 071814/0739 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 21, 2021
From: PIGAMO, ANNE; LAVY, CÉDRIC
To: ARKEMA FRANCE
Reel/Frame 058446/0995 →
Priority Claims (1)
FR 1854069 · May 16, 2018 · national
Continuity (2)
Division 17053250
Related Publication 20220112145A1 · Apr 14, 2022
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