Compositions comprising 1,1-difluoroethene, trifluoromethane and a third component

Patent metadata

Field	Value
Publication number	US-2018002586-A1
Application number	US-201615545420-A
Country	US
Kind code	A1
Filing date	Feb 1, 2016
Priority date	Jan 30, 2015
Publication date	Jan 4, 2018
Grant date	—

Abstract

The present invention provides a composition, such as a refrigerant composition comprising 1, 1-difluoroethene (vinylidene fluoride, R-1132a); trifluoromethane (R-23); and one or more compound selected from hexafluoroethane (R-116), ethane (R-170) and carbon dioxide (R-744, CO 2 ).

First claim

1 . A composition comprising:
i) 1,1-difluoroethene (vinylidene fluoride, R-1132a); ii) trifluoromethane (R-23); and iii) one or more compound selected from hexafluoroethane (R-116), ethane (R-170) and carbon dioxide (R-744, CO 2 ).

2 . A composition according to claim 1 comprising:
v) 1,1-difluoroethene (vinylidene fluoride, R-1132a);
vi) trifluoromethane (R-23); and
vii) one or more compound selected from hexafluoroethane (R-116) and/or ethane (R-170); and
viii) carbon dioxide (R-744, CO 2 ).

3 . A composition according to claim 1 or 2 comprising:
v) 1,1-difluoroethene (vinylidene fluoride, R-1132a);
vi) trifluoromethane (R-23); and
vii) one or more compound selected from hexafluoroethane (R-116) and/or ethane (R-170); and
viii) less than about 50% by weight carbon dioxide (R-744, CO 2 ).

4 . A composition according to any the preceding claims comprising from about 1 to about 98% by weight R-1132a.

5 . A composition according to any the preceding claims comprising from about 35 to about 95% by weight R-1132a.

6 . A composition according to any the preceding claims comprising from about 1 to about 98% by weight R-23.

7 . A composition according to any the preceding claims comprising up to about 80% by weight R-116.

8 . A composition according to claim 7 comprising from about 1 to about 60% by weight R-116.

9 . A composition according to any of the preceding claims comprising from about 1 to about 40% by weight R-116, from about 5 to about 98% by weight R-1132a and from about 5 to about 98% by weight R-23.

10 . A composition according to claim 9 comprising from about 1 to about 30% by weight R-116, from about 20 to about 90% by weight R-1132a and from about 5 to about 95% by weight R-23.

11 . A composition according to claim 10 comprising from about 1 to about 25% by weight R-116, from about 30 to about 80% by weight R-1132a and from about 5 to about 90% by weight R-23.

12 . A composition according to any of the preceding claims comprising up to 40% by weight R-170.

13 . A composition according to claim 12 comprising from about 1 to about 30% by weight R-170.

14 . A composition according to any of the preceding claims comprising less than about 10% by weight carbon dioxide, which does not contain carbon dioxide.

15 . A composition according to any of claims 1 to 13 comprising from about 1 to about 45% by weight carbon dioxide.

16 . A composition according to claim 15 comprising from about 1 to about 30% by weight carbon dioxide.

17 . A composition according to claim 16 comprising from about 1 to about 15% by weight carbon dioxide.

18 . A composition according to any of claims 1 and 4 to 6 comprising about 1 to about 98% by weight R-1132a, about 1 to about 98% by weight R-23 and about 1 to about 50% by weight carbon dioxide.

19 . A composition according to claim 18 comprising about 35 to 98% by weight R-1132a, about 1 to about 60% by weight R-23 and about 1 to about 20% by weight carbon dioxide.

20 . A composition according to claim 19 comprising about 40 to about 60% by weight R-23.

21 . A composition according to any of claim 16 or 18 to 20 comprising about 4 to about 16% by weight carbon dioxide.

22 . A composition according to any of the preceding claims consisting essentially of stated components.

23 . A composition according to any of the preceding claims which is azeotropic.

24 . A composition according to any of the preceding claims, wherein the composition is less flammable than R-1132a alone.

25 . A composition according to claim 24 wherein the composition has:
a. a higher flammable limit;
b. a higher ignition energy; and/or
c. a lower flame velocity compared to R-1132a alone.

26 . A composition according to any of the preceding claims which is non-flammable.

27 . A composition according to claim 26 wherein the composition is non-flammable at ambient temperature, preferably wherein the composition is non-flammable at 60° C.

28 . A composition according to any of the preceding claims which has a temperature glide in an evaporator or condenser of less than about 10 K, preferably less than about 5 K.

29 . A composition according to any of the preceding claims which has a critical temperature of greater than about 0° C., preferably greater than about 10° C.

30 . A composition according to any of the preceding claims whose volumetric refrigeration capacity is at least 90% of that of R-508 at comparable cycle conditions.

31 . A composition according to any of the preceding claims whose compressor discharge temperature is within 15 K of that of R-508 at comparable cycle conditions.

32 . A composition comprising a lubricant and a composition according to any of the preceding claims.

33 . A composition according to claim 29 , wherein the lubricant is selected from mineral oil, silicone oil, polyalkyl benzenes (PABs), polyol esters (POEs), polyalkylene glycols (PAGs), polyalkylene glycol esters (PAG esters), polyvinyl ethers (PVEs), poly (alpha-olefins) and combinations thereof, preferably wherein the lubricant is selected from PAGs or POEs.

34 . A composition comprising a stabiliser and a composition according to any of the preceding claims.

35 . A composition according to claim 34 , wherein the stabiliser is selected from diene-based compounds, phosphates, phenol compounds and epoxides, and mixtures thereof.

36 . A composition comprising a flame retardant and a composition according to any of the preceding claims.

37 . A composition according to claim 36 , wherein the flame retardant is selected from the group consisting of tri-(2-chloroethyl)-phosphate, (chloropropyl) phosphate, tri-(2,3-dibromopropyl)-phosphate, tri-(1,3-dichloropropyl)-phosphate, diammonium phosphate, various halogenated aromatic compounds, antimony oxide, aluminium trihydrate, polyvinyl chloride, a fluorinated iodocarbon, a fluorinated bromocarbon, trifluoro iodomethane, perfluoroalkyl amines, bromo-fluoroalkyl amines and mixtures thereof.

38 . A heat transfer device containing a composition as defined in any one of claims 1 to 37 .

39 . A heat transfer device according to claim 38 wherein the heat transfer device is a refrigeration device.

40 . A heat transfer device according to claim 38 or 39 wherein the heat transfer device comprises an ultra-low temperature refrigeration system.

41 . A heat transfer device according to any of claims 38 to 40 wherein the heat transfer device comprises a cascade system.

42 . A sprayable composition comprising material to be sprayed and a propellant comprising a composition as defined in any of claims 1 to 37 .

43 . A method for cooling an article which comprises condensing a composition defined in any of claims 1 to 37 and thereafter evaporating the composition in the vicinity of the article to be cooled.

44 . A method for heating an article which comprises condensing a composition as defined in any one of claims 1 to 37 in the vicinity of the article to be heated and thereafter evaporating the composition.

Assignees

• Mexichem Fluor Sa De Cv

Inventors

• Low Robert E
• Sharratt Andrew

Classifications

• C11D7/505

  Mixtures of (hydro)fluorocarbons · CPC title

• C09K2205/122

  Halogenated hydrocarbons · CPC title

• C09K2205/128

  Perfluorinated hydrocarbons (C09K2205/124, C09K2205/126 take precedence) · CPC title

• C09K2205/40

  Replacement mixtures · CPC title

• F01K25/103

  Carbon dioxide (F01K25/065 takes precedence) · CPC title