Composition containing trifluoroethylene

Patent metadata

Field	Value
Publication number	US-2016002518-A1
Application number	US-201514851473-A
Country	US
Kind code	A1
Filing date	Sep 11, 2015
Priority date	Apr 30, 2013
Publication date	Jan 7, 2016
Grant date	—

Abstract

To provide a composition containing HFO-1123 having a low GWP, useful as a heat transfer composition, an aerosol sprayer, a foaming agent, a blowing agent, a solvent or the like.
A composition containing HFO-1123, and at least one first compound selected from the group consisting of HFO-1132, HFO-1132a, CFO-1113, HCFO-1122, HCFO-1122a, HFC-143 and methane.

First claim

What is claimed is:

1 . A composition containing trifluoroethylene, and at least one first compound selected from the group consisting of E-1,2-difluoroethylene, Z-1,2-difluoroethylene, 1,1-difluoroethylene, chlorotrifluoroethylene, 1-chloro-2,2-difluoroethylene, E-1-chloro-1,2-difluoroethylene, Z-1-chloro-1,2-difluoroethylene, 1,1,2-trifluoroethane and methane.

2 . The composition according to claim 1 , wherein the proportion of each first compound contained in the composition is less than 0.5 mass % based on the total amount of trifluoroethylene and the first compound(s).

3 . The composition according to claim 1 , wherein the total proportion of the first compound(s) contained in the composition is less than 0.5 mass % based on the total amount of trifluoroethylene and the first compound(s).

4 . The composition according to claim 1 , which further contains at least one second compound selected from the group consisting of 1,1-difluoroethane, 2-chloro-1,1-difluoroethane, 1-chloro-1,1-difluoroethane, 1-chloro-1,2,2-trifluoroethane, 1-chloro-1,1,2-trifluoroethane, 1,2-dichloro-1,1,2-trifluoroethane, 1,1,2-trichloro-1,2,2-trifluoroethane, E-1,2-dichloro-1,2-difluoroethylene and Z-1,2-dichloro-1,2-difluoroethylene.

5 . The composition according to claim 4 , wherein the proportion of each second compound contained in the composition is less than 0.5 mass % based on the total amount of trifluoroethylene and the second compound(s).

6 . The composition according to claim 4 , wherein the total proportion of the second compound(s) contained in the composition is less than 0.5 mass % based on the total amount of trifluoroethylene and the second compound(s).

7 . The composition according to claim 1 , which further contains at least one third compound selected from the group consisting of tetrafluoroethylene, E-1-chloro-2-fluoroethylene, Z-1-chloro-2-fluoroethylene, fluoroethylene, 3,3-difluoropropene, 3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, E-1,3,3,3-tetrafluoropropene, Z-1,3,3,3-tetrafluoropropene, hexafluoropropene, pentafluoroethane, 1,1,2,2-tetrafluoroethane, 1,1,1,2-tetrafluoroethane, 1,1,1-trifluoroethane, 1-chloro-1,2,2,2-tetrafluoroethane, 1-chloro-1,1,2,2-tetrafluoroethane, 1,1,1,2,2,3,3-heptafluoropropane, 1,1,1,2,3,3,3-heptafluoropropane, 1,1,1,3,3,3-hexafluoropropane, 1,1,1,2,3,3-hexafluoropropane, dichlorodifluoromethane, chlorodifluoromethane, chlorofluoromethane, difluoromethane, trifluoromethane, fluoromethane, chloromethane and perfluorocyclobutane.

8 . The composition according to claim 7 , wherein the proportion of each third compound contained in the composition is less than 0.5 mass % based on the total amount of trifluoroethylene and the third compound(s).

9 . The composition according to claim 7 , wherein the total proportion of the third compound(s) contained in the composition is less than 0.5 mass % based on the total amount of trifluoroethylene and the third compound(s).

10 . A method for producing a composition containing trifluoroethylene by gas-phase hydrogen reduction of chiorotrifluoroethylene, wherein chlorotrifluoroethylene and hydrogen are reacted in the presence of a palladium catalyst at 80° C. or higher, and the obtained reaction product is distilled to obtain trifluoroethylene containing at least one compound selected from the group consisting of E-1,2-difluoroethylene, Z-1,2-difluoroethylene, chlorotrifluoroethylene, 1-chloro-2,2-difluoroethylene and 1,1-difluoroethylene.

11 . The production method according to claim 10 , wherein the proportion of any of E-1,2-difluoroethylene, Z-1,2-difluoroethylene, chlorotrifluoroethylene, 1-chloro-2,2-difluoroethylene and 1,1-difluoroethylene contained in the composition is less than 0.5 mass % based on the total amount of trifluoroethylene, E-1,2-difluoroethylene, Z-1,2-difluoroethylene and 1,1-difluoroethylene.

12 . The production method according to claim 10 , wherein the total proportion of E-1,2-difluoroethylene, Z-1,2-difluoroethylene, chlorotrifluoroethylene, 1-chloro-2,2-difluoroethylene and 1,1-difluoroethylene is less than 0.5 mass % based on the total amount of trifluoroethylene, E-1,2-difluoroethylene, Z-1,2-difluoroethylene and 1,1-difluoroethylene.

13 . A method for producing a composition containing trifluoroethylene by a synthetic reaction involving heat decomposition in the presence of a heating medium from a mixture of chlorodifluoromethane and chlorofluoromethane, wherein the reaction is carried out at from 400 to 1,200° C., and the obtained reaction product is distilled to obtain trifluoroethylene containing at least one compound selected from the group consisting of E-1,2-difluoroethylene, Z-1,2-difluoroethylene, 1,1-difluoroethylene, chiorotrifluoroethylene, tetrafluoroethylene, fluoroethylene, 1,1,1-trifluoroethane, difluoromethane, trifluoromethane and pentafluoroethane.

14 . The production method according to claim 13 , wherein the proportion of any of E-1,2-difluoroethylene, Z-1,2-difluoroethylene, 1,1-difluoroethylene, chlorotrifluoroethylene, tetrafluoroethylene, fluoroethylene, 1,1,1-trifluoroethane, difluoromethane, trifluoromethane and pentafluoroethane contained in the composition is less than 0.5 mass % based on the total amount of trifluoroethylene, E-1,2-difluoroethylene, 1,1-difluoroethylene, tetrafluoroethylene, fluoroethylene, 1,1,1-trifluoroethane, difluoromethane, trifluoromethane and pentafluoroethane.

15 . The production method according to claim 13 , wherein the total proportion of E-1,2-difluoroethylene, 1,1-difluoroethylene, tetrafluoroethylene, fluoroethylene, 1,1,1-trifluoroethane, difluoromethane, trifluoromethane and pentafluoroethane is less than 0.5 mass % based on the total amount of trifluoroethylene, E-1,2-difluoroethylene, 1,1-difluoroethylene, tetrafluoroethylene, fluoroethylene, 1,1,1-trifluoroethane, difluoromethane, trifluoromethane and pentafluoroethane.

Assignees

• Asahi Glass Co Ltd

Inventors

• Taniguchi Tomoaki
• Okamoto Hidekazu
• Furuta Shoji
• Takeuchi Yu

Classifications

• C09K3/30 Primary

  for aerosols (aerosol containers B65D83/14) · CPC title

• C09K2205/22

  All components of a mixture being fluoro compounds · CPC title

• C09K2205/12

  Hydrocarbons · CPC title

• B01F17/0085

  Operations & Transport · mapped topic

• C09K3/00

  Materials not provided for elsewhere · CPC title