초록

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.

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What is claimed is: 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 percen

What is claimed is: 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-26째 C. to about-30째 C. at a pressure of about 14.2 psia. 7. The azeotrope-like composition of claim 1 having a boiling point of from about-27째 C. to about-30째 C. at a pressure of about 14.2 psia. 8. The azeotrope-like composition of claim 1 having a boiling point of from about-28째 C. to about-29.5째 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.