Azeotrope-like compositions of tetrafluoropropene and hydrofluorocarbons

1. An azeotrope-like composition comprising effective amounts of trans-1,3,3,3-tetrafluoropropene (transHFO-1234ze) and 1,1,1,2-tetrafluoroethane (HFC-134a).

2. An azeotrope-like composition in accordance with claim 1 having a boiling point of from about −26° C. to about −23° C. at a pressure of about 14 psia.

3. A composition comprising the composition of claim 1 and at least one adjuvant selected from the group consisting of lubricants, compatibilizers, surfactants, flame suppressants, solubilizing agents, dispersing agents, cell stabilizers, cosmetics, polishing agents, medicaments, cleaners, fire retarding agents, colorants, chemical sterilants, stabilizers, polyols, polyol premix components and combinations of two or more of these.

4. A heat transfer composition comprising the composition of claim 3 and wherein said adjuvant comprises at least one lubricant.

5. A heat transfer composition comprising an azeotrope-like composition of claim 1 .

6. A heat transfer composition comprising at least about 50% by weight of the composition of claim 1 .

7. A refrigeration system comprising a heat transfer composition of claim 6 wherein said system is selected from the group consisting of air conditioning systems, refrigerator systems, heat pump systems, and combinations of two or more of these.

8. A blowing agent comprising an azeotrope-like composition of claim 1 .

9. A foamable composition comprising one or more components capable of forming foam and an azeotrope-like composition of claim 1 .

10. The foamable composition of claim 9 wherein said one or more components capable of forming foam comprise one or more components capable of forming foam selected from the group consisting of thermoplastic foams, polystyrene foams, polyethylene foams, low density polyethylene foams, extruded thermoplastic foams, polyurethane foams, and polyisocyanurate foams.

11. A foam formed from the foamable composition of claim 10 .

12. A method of replacing an existing refrigerant contained in a refrigerant system comprising removing at least a portion of said existing refrigerant from said system and replacing at least a portion of said existing refrigerant by introducing into said system a refrigerant composition comprising the composition of claim 1 .

13. The method of claim 12 wherein said existing refrigerant is selected from the group consisting of HFC-134a, R-12, R-500, HFC-152a, and HFC-22 and combinations of these.

14. A sprayable composition comprising a material to be sprayed and a propellant comprising an azeotrope-like composition of claim 1 .

15. The sprayable composition of claim 14 wherein said material to be sprayed is selected from the group consisting of cosmetics, cleaning solvent, lubricants and medicinal materials.

16. A method for cooling an article which comprises condensing a composition of claim 1 and thereafter evaporating said composition in the vicinity of the article to be cooled.

17. A method for heating an article which comprises condensing a composition of claim 1 in the vicinity of the article to be heated and thereafter evaporating said composition.

18. The azeotrope-like composition of claim 2 comprising from greater than zero to about 75 weight percent transHFO-1234ze and from about 25 to less than 100 weight percent of HFC-134a.

19. The azeotrope-like composition of claim 2 comprising from greater than zero to about 60 weight percent transHFO-1234ze and from about 40 to less than 100 weight percent of HFC-134a.

20. The azeotrope-like composition of claim 2 comprising from about 1 to about 40 weight percent transHFO-1234ze and from about 60 to about 99 weight percent of HFC-134a.

21. The composition of claim 18 and at least one adjuvant selected from the group consisting of lubricants, compatibilizers, surfactants, flame suppressants, solubilizing agents, dispersing agents, cell stabilizers, cosmetics, polishing agents, medicaments, cleaners, fire retarding agents, colorants, chemical sterilants, stabilizers, polyols, polyol premix components and combinations of two or more of these.

22. The composition of claim 19 and at least one adjuvant selected from the group consisting of lubricants, compatibilizers, surfactants, flame suppressants, solubilizing agents, dispersing agents, cell stabilizers, cosmetics, polishing agents, medicaments, cleaners, fire retarding agents, colorants, chemical sterilants, stabilizers, polyols, polyol premix components and combinations of two or more of these.

23. The composition of claim 20 and at least one adjuvant selected from the group consisting of lubricants, compatibilizers, surfactants, flame suppressants, solubilizing agents, dispersing agents, cell stabilizers, cosmetics, polishing agents, medicaments, cleaners, fire retarding agents, colorants, chemical sterilants, stabilizers, polyols, polyol premix components and combinations of two or more of these.

24. The heat transfer composition of claim 4 wherein said azeotrope-like composition comprises from greater than zero to about 75 weight percent transHFO-1234ze and from about 25 to less than 100 weight percent of HFC-134a.

25. The heat transfer composition of claim 4 wherein said azeotrope-like composition comprises from greater than zero to about 60 weight percent transHFO-1234ze and from about 40 to less than 100 weight percent of HFC-134a.

26. The heat transfer composition of claim 4 wherein said azeotrope-like composition comprises from about 1 to about 40 weight percent transHFO-1234ze and from about 60 to about 99 weight percent of HFC-134a.

27. The heat transfer composition of claim 4 wherein said azeotrope-like composition has a boiling point of from about −26° C. to about −23° C. at a pressure of about 14 psia.

28. The refrigeration system of claim 7 wherein said azeotrope-like composition is present in an amount of from greater than zero to about 75 weight percent transHFO-1234ze and from about 25 to less than 100 weight percent of HFC-134a.

29. The refrigeration system of claim 7 wherein said azeotrope-like composition is present in an amount of from greater than zero to about 60 weight percent transHFO-1234ze and from about 40 to less than 100 weight percent of HFC-134a.

30. The refrigeration system of claim 7 wherein said azeotrope-like composition is present in an amount of from about 1 to about 40 weight percent transHFO-1234ze and from about 60 to about 99 weight percent of HFC-134a.

31. The refrigeration system of claim 7 wherein said azeotrope-like composition has a boiling point of from about −26° C. to about −23° C. at a pressure of about 14 psia.

32. The refrigeration system of claim 7 wherein said heat transfer composition further comprises HFC-152a.

33. The refrigeration system of claim 32 wherein said heat transfer composition further comprises at least one adjuvant selected from the group consisting of lubricants, compatibilizers, surfactants, flame suppressants, solubilizing agents, dispersing agents, fire retarding agents, stabilizers, and combinations of two or more of these.

34. The refrigeration system of claim 33 wherein said adjuvant comprises at least one lubricant.

35. The composition of claim 1 wherein said azeotrope-like composition is azeotropic.

36. The composition of claim 35 comprising of from about 5 to about 35 weight percent transHFO-1234ze and from about 65 to about 95 weight percent of HFC-134a.

37. A sprayable composition comprising a material to be sprayed and a propellant comprising the azeotropic composition of claim 35 .

38. The sprayable composition of claim 37 wherein said material to be sprayed is selected from the group consisting of cosmetics, cleaning solvent, lubricants and medicinal materials.

39. The sprayable composition of claim 37 wherein said material to be sprayed is a cleaning solvent.