Compositions of 2,4,4,4-tetrafluorobut-1-ene and cis-1,1,1,4,4,4-hexafluorobut-2-ene

Patent metadata

Field	Value
Publication number	US-9359541-B2
Application number	US-201514844583-A
Country	US
Kind code	B2
Filing date	Sep 3, 2015
Priority date	Jul 1, 2011
Publication date	Jun 7, 2016
Grant date	Jun 7, 2016

Abstract

A composition including 2,4,4,4-10-tetrafluorobut-1-ene and cis-1,1,1,4,4,4-hexafluorobut-2-ene, and also the use thereof in particular as a heat transfer fluid. The composition may include: from 1% to 99% of 2,4,4,4-tetrafluorobut-1-ene and from 1% to 99% of cis-1,1,1,4,4,4-hexafluorobut-2-ene; preferably from 5% to 70% of 2,4,4,4-tetrafluorobut-1-ene and from 30% to 95% of cis-1,1,1,4,4,4-hexafluorobut-2-ene; preferably from 20% to 65% of 2,4,4,4-tetrafluorobut-1-ene and from 35% to 80% of cis-1,1,1,4,4,4-hexafluorobut-2-ene; preferably from 25% to 60% of 2,4,4,4-tetrafluorobut-1-ene and from 40% to 75% of cis-1,1,1,4,4,4-hexafluorobut-2-ene; preferably from 28% to 51% of 2,4,4,4-tetrafluorobut-1-ene and from 49% to 72% of cis-1,1,1,4,4,4-hexafluorobut-2-ene.

First claim

The invention claimed is:

1. A composition comprising 2,4,4,4-tetrafluorobut-1-ene and 1,1,1,4,4,4-hexafluorobut-2-ene, wherein the 1,1,1,4,4,4-hexafluorobut-2-ene consists essentially of cis-1,1,1,4,4,4-hexafluorobut-2-ene.

2. The composition as claimed in claim 1 , consisting essentially of 2,4,4,4-tetrafluorobut-1-ene, 1,1,1,4,4,4-hexafluorobut-2-ene, and relative to the total weight of the composition, less than or equal to 20% of at least one additional heat-transfer compound, wherein the 1,1,1,4,4,4-hexafluorobut-2-ene consists essentially of cis-1,1,1,4,4,4-hexafluorobut-2-ene.

3. The composition as claimed in claim 1 , comprising:
from 5% to 70% of 2,4,4,4-tetrafluorobut-1-ene and from 30% to 95% of cis-1,1,1,4,4,4-hexafluorobut-2-ene.

4. A heat-transfer fluid comprising the composition as claimed in claim 1 .

5. The heat-transfer fluid as claimed in claim 4 , in which the composition is quasi-azeotropic.

6. The heat-transfer fluid as claimed in claim 4 , in which the composition is nonflammable.

7. A heat-transfer composition comprising the composition as claimed in claim 1 and also one or more additives chosen from lubricants, stabilizing agents, surfactants, tracers, fluorescent agents, odorous agents, solubilizing agents and their mixtures.

8. A heat-transfer installation comprising a vapor compression circuit containing a composition as claimed in claim 1 as heat-transfer fluid.

9. The installation as claimed in claim 8 , comprising a centrifugal compressor.

10. The installation as claimed in claim 8 , comprising a flooded evaporator.

11. The installation as claimed in claim 8 , chosen from mobile or stationary installations for heat-pump heating, air conditioning, refrigeration or freezing and Rankine cycles.

12. A process for heating or cooling a liquid or a body by means of a vapor compression circuit containing a heat-transfer fluid, said process successively comprising the evaporation of the heat-transfer fluid, the compression of the heat-transfer fluid, the condensation of the heat fluid and the reduction in pressure of the heat-transfer fluid, in which the heat-transfer fluid is a composition as claimed in claim 1 .

13. A process for reducing the environmental impact of a heat-transfer installation comprising a vapor compression circuit containing an initial heat-transfer fluid, said process comprising a stage of replacement of the initial heat-transfer fluid in the vapor compression circuit by a final transfer fluid, the final transfer fluid exhibiting a lower GWP than the initial heat-transfer fluid, in which the final heat-transfer fluid is a composition as claimed in claim 1 .

14. The process as claimed in claim 13 , in which the initial heat-transfer fluid is 2,2-dichloro-1,1,1-trifluoroethane.

15. A solvent comprising the composition as claimed in claim 1 as solvent.

16. A blowing agent comprising the composition as claimed in claim 1 as blowing agent.

17. A propellant comprising the composition as claimed in claim 1 .

18. A cleaning agent comprising the composition as claimed in claim 1 .

19. The composition as claimed in claim 1 , which is quasi-azeotropic.

20. The composition as claimed in claim 1 , which is azeotropic.

21. The heat-transfer fluid as claimed in claim 4 , in which the composition is azeotropic.

22. A heat-transfer installation comprising a heat-transfer composition as claimed in claim 6 .

23. The composition as claimed in claim 1 , comprising, relative to the total weight of the composition, from 20% to 65% of 2,4,4,4-tetrafluorobut-1-ene and from 35% to 80% of cis-1,1,1,4,4,4-hexafluorobut-2-ene.

24. The composition as claimed in claim 1 , comprising, relative to the total weight of the composition, from 25% to 60% of 2,4,4,4-tetrafluorobut-1-ene and from 40% to 75% of cis-1,1,1,4,4,4-hexafluorobut-2-ene.

25. The composition as claimed in claim 1 , comprising, relative to the total weight of the composition, from 28% to 51% of 2,4,4,4-tetrafluorobut-1-ene and from 49% to 72% of cis-1,1,1,4,4,4-hexafluorobut-2-ene.

26. The composition as claimed in claim 1 , wherein the 1,1,1,4,4,4-hexafluorobut-2-ene consists of cis-1,1,1,4,4,4-hexafluorobut-2-ene and optionally up to 1 wt. % of an impurity.

27. The composition as claimed in claim 1 , wherein the 1,1,1,4,4,4-hexafluorobut-2-ene consists of cis-1,1,1,4,4,4-hexafluorobut-2-ene.

Assignees

• Arkema France

Inventors

• Rached Wissam

Classifications

• C11D7/505

  Mixtures of (hydro)fluorocarbons · CPC title

• C09K3/00

  Materials not provided for elsewhere · CPC title

• C09K5/045 Primary

  containing only fluorine as halogen · CPC title

• C09K2205/22

  All components of a mixture being fluoro compounds · CPC title

• C08J9/146

  only fluorine as halogen atoms · CPC title