Azeotrope-like compositions of tetrafluoropropene and pentafluoropropene
View Patent ↗Provided are azeotrope-like compositions comprising tetrafluoropropene and pentafluoropropene and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, and aerosol propellants.
1. An azeotrope-like composition comprising effective amounts of HFO-1234yf and HFO-1225yez.
2. The azeotrope-like composition of claim 1 which consists essentially of from about 50 to less than 100 weight percent HFO-1234yf and from greater than zero to about 50 weight percent of HFO-1225yez.
3. The azeotrope-like composition of claim 1 which consists essentially of from about 65 to less than 100 weight percent HFO-1234yf and from greater than zero to about 35 weight percent of HFO-1225yez.
4. The azeotrope-like composition of claim 1 which consists essentially of from about 85 to less than 100 weight percent HFO-1234yf and from greater than zero to about 15 weight percent of HFO-1225yez.
5. The azeotrope-like composition of claim 1 which consists essentially of from about 93 to less than 100 weight percent HFO-1234yf and from greater than zero to about 7 weight percent of HFO-1225yez.
6. The azeotrope-like composition of claim 1 having a boiling point of from about −26° C. to about −30° C. at a pressure of about 14.2 psia.
7. The azeotrope-like composition of claim 1 having a boiling point of from about −27° C. to about −30° C. at a pressure of about 14.2 psia.
8. The azeotrope-like composition of claim 1 having a boiling point of from about −28° C. to about −29.5° C. at a pressure of about 14.2 psia.
9. The composition of claim 1 further comprising a lubricant.
10. The composition of claim 9 wherein said lubricant is selected from the group consisting of mineral oil, alkyl benzenes, polyol esters, polyalkylene glycols, and combinations of two or more thereof.
11. A refrigerant composition comprising an azeotrope-like composition of claim 1 .
12. A refrigeration system comprising a refrigerant of claim 11 .
13. A method for cooling an article which comprises condensing a refrigerant composition of claim 11 and thereafter evaporating said refrigerant composition in the vicinity of the article to be cooled.
14. A method for heating an article which comprises condensing a refrigerant composition of claim 11 in the vicinity of the article to be heated and thereafter evaporating said refrigerant composition.
15. A sprayable composition comprising a material to be sprayed and a propellant comprising an azeotrope-like composition of claim 1 .
16. A sprayable composition according to claim 15 wherein the sprayable composition is an aerosol.
17. A blowing agent comprising an azeotrope-like composition of claim 1 .