초록 ▼

The use of pentafluoropropene (HFO-1225) and tetrafluoropropene (HFO-1234) in refrigeration equipment is disclosed. These materials are generally useful as refrigerants for heating and cooling, as blowing agents, as aerosol propellants, as solvent composition, and as fire extinguishing and suppress

The use of pentafluoropropene (HFO-1225) and tetrafluoropropene (HFO-1234) in refrigeration equipment is disclosed. These materials are generally useful as refrigerants for heating and cooling, as blowing agents, as aerosol propellants, as solvent composition, and as fire extinguishing and suppressing agents.

대표청구항 ▼

What is claimed is: 1. A heat transfer composition for use in an air conditioning system comprising: (a) at least about 50% by weight of 1,1,1,2-tetrafluoropropene (HFO-1234yf) having no substantial acute toxicity; and (b) at least one poly alkylene glycol lubricant in the form of a homopolymer or

What is claimed is: 1. A heat transfer composition for use in an air conditioning system comprising: (a) at least about 50% by weight of 1,1,1,2-tetrafluoropropene (HFO-1234yf) having no substantial acute toxicity; and (b) at least one poly alkylene glycol lubricant in the form of a homopolymer or co-polymer consisting of 2 or more oxypropylene groups and having a viscosity of from about 10 to about 200 centistokes at about 37° C. 2. The composition of claim 1 having a Global Warming Potential (GWP) of not greater than about 150. 3. The heat transfer composition of claim 1 further comprising at least one compatabilizer. 4. The heat transfer composition of claim 1 wherein said lubricant is present in an amount of at least about 30% by weight. 5. The composition of claim 1 wherein said lubricant is present in an amount of about 5% by weight of the composition. 6. The composition of claim 1 wherein said lubricant is present in an amount of about 20% by weight of the composition. 7. The composition of claim 1 wherein said lubricant is present in an amount of about 50% by weight composition. 8. The composition of claim 1 wherein said composition is non-flammable. 9. The composition of claim 1 having a Global Warming Potential (GWP) of not greater than about 100. 10. The composition of claim 1 having a Global Warming Potential (GWP) of not greater than about 75. 11. The composition of claim 1 having an ozone depletion potential (ODP) of not greater than about 0.02. 12. The composition of claim 1 wherein said HFO-1234yf comprises at least about 70% by weight of the composition. 13. The composition of claim 3 wherein said compatabilizer is selected from the group consisting of propane, butane, pentane and combinations of these. 14. The composition of claim 3 comprising compatabilizer in amounts of from about 0.5 to about 5 percent by weight of the composition. 15. The composition of claim 1 having a capacity relative to HFC-134a of about 1. 16. The composition of claim 1 having a coefficient of performance (COP) relative to HFC-134a of about 1. 17. The composition of claim 1 comprising said lubricant in an amount of from about 30 to about 50% by weight. 18. The composition of claim 1 further comprising a surfactant and a solubilizing agent. 19. The composition of claim 1 wherein said lubricant further comprises at least one polyol ester. 20. The composition of claim 1 having a capacity relative to HFC-134a of about 1 and having a coefficient of performance (COP) relative to HFC-134a of about 1. 21. The composition of claim 1 wherein said composition has one liquid phase at at least one temperature between about-50° C. and +70° C. 22. The composition of claim 1 being stable when in contact with aluminum, steel and copper under the conditions of use in refrigeration and air conditioning systems. 23. The composition of claim 1 consisting essentially of said HFO-1234yf and said lubricant. 24. The composition of claim 1 wherein said lubricant has a viscosity of from about 30 to about 150 centistokes at about 37° C. 25. The composition of claim 24 consisting essentially of said HFO-1234yf and said lubricant.