Hydrofluorocarbon/trifluoroiodomethane/hydrocarbons refrigerant compositions

Abstract

A composition comprising from about 40 weight percent to about 99.9 weight percent of at least one C 1 -c 5 hydrofluorocarbon, from about 0.1 weight percent to about 50 weight percent of CF3I, and from about 0.1 weight percent to about 10 weight percent of at least one C 1 -c 6 hydrocarbon and the use of these composition for in methods of the recharging of refrigeration systems.

1 . A composition comprising:
 (a) from about 40 weight percent to about 99.8 weight percent of at least one C 1 -C5 hydrofluorocarbon;   (b) from about 0.1 weight percent to about 50 weight percent of CF 3 I; and   (c) from about 0.1 weight percent to about 10 weight percent of at least one C 1 -C6 hydrocarbon.   
     
     
         2 . The composition of  claim 1  wherein the at least one C 1 -C5 hydrofluorocarbon is present in an amount of from about 72 weight percent to about 99.8 weight percent. 
     
     
         3 . The composition of  claim 1  wherein the CF 3 I is present in an amount of from about 0.1 weight percent to about 20 weight percent. 
     
     
         4 . The composition of  claim 1  wherein the at least one C 1 -C6 hydrocarbon is present in an amount of from about 0.1 weight percent to about 8 weight percent. 
     
     
         5 . The composition of  claim 1  wherein the at least one C 1 -C5 hydrofluorocarbon is present in an amount of from about 72 weight percent to about 99.8 weight percent; the CF 3 I is present in an amount of from about 0.1 weight percent to about 20 weight percent; and the at least one C 1 -C6 hydrocarbon is present in an amount of from about 0.1 weight percent to about 8 weight percent. 
     
     
         6 . (canceled) 
     
     
         7 . The composition of  claim 1  wherein the CF 3 I is present in an amount of from about 0.1 weight percent to about 10 weight percent. 
     
     
         8 . (canceled) 
     
     
         9 . (canceled) 
     
     
         10 . The composition of  claim 1  wherein the at least one C 1 -C 5  hydrofluorocarbon comprises consists essentially of difluoromethane, and 1,1-1,2-,2-p-entafluoro-ethane. 
     
     
         11 . (canceled) 
     
     
         12 . The composition of  claim 1  wherein the at least one C 1 -C 5  hydrofluorocarbon is a combination of 1,1,1,2,2-pentafluoroethane; 1,1,1-trifluoroethane; and 1,1,1,2-tetrafluoroethane. 
     
     
         13 . The composition of  claim 1  wherein the at least one C 1 -C 5  hydrofluorocarbon is a combination of difluoromethane; 1,1,1,2,2-pentafluoroethane; and 1,1,1,2-tetrafluoroethane. 
     
     
         14 . (canceled) 
     
     
         15 . The composition of  claim 1  wherein the at least one C 1 -C 6  hydrocarbon comprises isobutane. 
     
     
         16 . (canceled) 
     
     
         17 . (canceled) 
     
     
         18 . The composition of  claim 1  further comprising a lubricant. 
     
     
         19 . The composition of  claim 18  wherein said lubricant comprises a mineral oil, hydrocarbon oil, alkyl oil, alkyl benzene oil, paraffinic oil, or combinations thereof. 
     
     
         20 . The composition of  claim 18  wherein said lubricant is present in an amount of from about 0.1 to about 99.9 weight percent based on the weight of the composition. 
     
     
         21 . The composition of  claim 19  wherein said lubricant comprises a mineral oil or alkyl benzene oil. 
     
     
         22 . The composition of  claim 20  wherein said lubricant comprises a mineral oil or alkyl benzene oil. 
     
     
         23 . A method of recharging a refrigeration system comprising the steps of:
 providing a refrigeration system from which a chlorine-containing refrigerant has been substantially removed; and introducing the composition of  claim 1  into said refrigeration system.   
     
     
         24 . (canceled) 
     
     
         25 . (canceled) 
     
     
         26 . (canceled) 
     
     
         27 . (canceled) 
     
     
         28 . (canceled) 
     
     
         29 . (canceled) 
     
     
         30 . (canceled) 
     
     
         31 . (canceled) 
     
     
         32 . (canceled)