Compositions of HFC-152a and CF3I

• US 20060116310A1
• Filed: 10/14/2005
• Published: 06/01/2006
• Est. Priority Date: 04/16/2004
• Status: Abandoned Application

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Singh, Rajiv, Morris, Thomas
• Application Number:
  US11/250,219
• Publication Number:
  US 20060116310A1
• Time in Patent Office: Days
• US Class Current: 510/415
• CPC Class Codes: C11D 7/505 Mixtures of (hydro)fluorocarbons

Abstract

Provided are azeotrope-like compositions comprising difluoroethane and trifluoroiodomethane and uses thereof, including use in refrigerant compositions, refrigeration systems, blowing agent compositions, aerosol propellants and others.

Claims

1. An azeotrope-like composition consisting essentially of HFC-152a and CF₃I.

2. The azeotrope-like composition of claim 1 which consists essentially of from about 5 to about 35 weight percent of HFC-152a and from about 95 to about 65 weight percent of CF₃I.

3. The azeotrope-like composition of claim 1 having a boiling point of from about −

175°

C. to about 10°

C.

4. The azeotrope-like composition of claim 1 having a boiling point of from about −

165°

C. to about 0°

C.

5. A composition comprising the composition of claim 1 and at least one adjuvant selected from the group consisting of supplemental lubricants, compatibilizers, surfactants, supplemental 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.

6. A heat transfer composition comprising the composition of claim 1.

7. A heat transfer composition comprising the composition of claim 5 and wherein said adjuvant comprises at least one lubricant.

8. The heat transfer composition of claim 7 wherein said lubricant is selected from the group consisting of mineral oil, silicone oil, polyalkyl benzenes (PABs), polyol esters (POEs), polyalkylene glycols (PAGs), polyalkylene glycol esters (PAG esters), polyvinyl ethers (PVEs), poly(alpha-olefins) (PAOs), and combinations of these.

9. The heat transfer composition of claim 5 wherein said adjuvant further includes at least one compatibilizer.

10. The heat transfer composition of claim 9 comprising from about 0.5 to about 5 percent by weight of said at least one compatibilizer.

11. The heat transfer composition of claim 7 wherein said lubricant(s) together are present in an amount of from about 5 to about 50 percent by weight of the heat transfer composition.

12. The heat transfer composition of claim 5 comprising one or more supplemental flame suppressants.

13. The heat transfer composition of claim 12 wherein said one or more flame suppressant(s) together are present in an amount of from about 0.5% to about 30% by weight of the heat transfer composition.

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

15. A refrigerant comprising the heat transfer composition of claim 14.

16. A refrigeration system comprising a heat transfer composition of claim 15.

17. A refrigeration system of claim 16 selected from group consisting of automotive air conditioning systems, residential air conditioning systems, commercial air conditioning systems, residential refrigerator systems, residential freezer systems, commercial refrigerator systems, commercial freezer systems, chiller air conditioning systems, chiller refrigeration systems, heat pump systems, and combinations of two or more of these.

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

19. A blowing agent comprising at least about 5% by weight of an azeotrope-like composition of claim 1.

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

21. The foamable composition of claim 20 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.

22. The foamable composition of claim 21 further comprising at least one additive selected from the group consisting of dispersing agents, cell stabilizers, surfactants, flame retardants and combinations of two or more of these.

23. A foam formed from the foamable composition of claim 22.

24. 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.

25. The method of claim 24 wherein said existing refrigerant is selected from the group consisting of HFC-134a, R-12, HFC-143a, HFC-125, HFC-32, R-500, HFC-152a, and HFC-22 and combinations of these.

26. The method of claim 25 wherein said existing refrigerant is selected from the group consisting of HFC-134a, HFC-143a, HFC-125, HFC-32 and combinations of these.

27. The method of claim 26 wherein said existing refrigerant system is selected from the group consisting of automotive air conditioning systems, residential air conditioning systems, commercial air conditioning systems, residential refrigerator systems, residential freezer systems, commercial refrigerator systems, commercial freezer systems, chiller air conditioning systems, chiller refrigeration systems, heat pump systems, and combinations of two or more of these.

28. The method of claim 26 wherein said refrigerant composition in accordance with claim 1 has a Global Warming Potential (GWP) of not greater than about 1000.