Fluorinated alkene refrigerant compositions

Abstract

Liquid compositions for use in compression refrigeration, air-conditioning and heat pump systems in which a fluoroalkene containing from 3 to 4 carbon atoms and at least 1 but no more than 2 double bonds is combined with an effective amount to provide lubrication of an essentially miscible organic lubricant comprised of carbon, hydrogen and oxygen and having a ratio of oxygen to carbon effective to provide a degree of miscibility with said fluoroalkene so that when up to five weight percent of lubricant is added to said fluoroalkene the refrigerant has one liquid phase at at least one temperature between −40 and +70° C. Methods for producing refrigeration and heating with the fluoroalkenes, alone or in combination with the disclosed lubricants, are also disclosed.

1 . A liquid composition for use in compression refrigeration, air-conditioning and heat pump systems comprising:
 (A) a fluoroalkene containing from 3 to 4 carbon atoms and at least 1 but no more than 2 double bonds; and   (B) an effective amount to provide lubrication of an essentially miscible organic lubricant comprised of carbon, hydrogen and oxygen and having a ratio of oxygen to carbon effective to provide a degree of miscibility with said fluoroalkene so that when up to five weight percent of lubricant is added to said fluoroalkene the mixture has one liquid phase at at least one temperature between −40 and +70° C.   
     
     
         2 . The composition of  claim 1 , wherein the mixture has one liquid phase when up to five weight percent of lubricant is added to said fluoroalkene. 
     
     
         3 . The composition of  claim 2 , wherein the mixture has one liquid phase when up to 20 weight percent of lubricant is added to said fluoroalkene. 
     
     
         4 . The composition of  claim 3 , wherein the mixture has one liquid phase in all proportions of fluoroalkene and lubricant. 
     
     
         5 . The composition of  claim 1 , wherein the mixture has one liquid phase over essentially the entire temperature range. 
     
     
         6 . The composition of  claim 1 , wherein said lubricant is selected from the group consisting of polyalkylene glycol, polyalkylene glycol ester and polyol ester lubricants for compressor refrigeration, air-conditioning and heat pump systems. 
     
     
         7 . The composition of  claim 1 , wherein said fluoroalkene has the structure:
   XCF Z R 3-Z      wherein X is a C2 or a C 3  unsaturated, substituted or unsubstituted alkyl radical, R is independently selected from the group consisting of Cl, Br, I or H, and z is 1 to 3.   
     
     
         8 . The composition of  claim 7 , wherein said fluoroalkene has the structure: 
       
         
           
           
               
               
           
         
         wherein each R is independently Cl, F, Br, I or H; R′ is (CR 2 ) n Y; Y is CRF 2 ; and n is 0 or 1. 
       
     
     
         9 . The composition of  claim 8 , wherein said fluoroalkene is 1,3,3,3-tetrafluoro-propene or 3,3,3-trifluoropropene. 
     
     
         10 . The composition of  claim 1 , wherein said organic lubricant is a polyalkylene glycol. 
     
     
         11 . The composition of  claim 10 , wherein said polyalkylene glycol has at least one terminal hydroxyl group. 
     
     
         12 . The composition of  claim 11 , wherein both terminal groups of said polyalkylene glycol are hydroxyl groups. 
     
     
         13 . The composition of  claim 10 , wherein said polyalkylene glycol has at least one alkyl terminal group. 
     
     
         14 . The composition of  claim 13 , wherein at least one terminal alkyl group of said polyalkylene glycol contains at least one heteroatom. 
     
     
         15 . The composition of  claim 14 , wherein said polyalkylene glycol has at least one fluoroalkyl terminal group. 
     
     
         16 . The composition of  claim 1 , wherein said organic lubricant is a polyalkylene glycol ester. 
     
     
         17 . The composition of  claim 1 , further comprising an amount of hydrocarbon lubricant essentially miscible with said fluoroalkene and said organic lubricant. 
     
     
         18 . The composition of  claim 17 , further comprising a surfactant for solubilizing said hydrocarbon lubricant with said organic lubricant, in an amount effective to form an essentially miscible blend. 
     
     
         19 . A method for producing refrigeration which comprises condensing a refrigerant composition comprising a fluoroalkene containing from 3 to 4 carbon atoms and at least 1 but no more than 2 double bonds, and thereafter evaporating said refrigerant composition in the vicinity of a body to be cooled. 
     
     
         20 . The method of  claim 19 , wherein said fluoroalkene has the structure:
   XCF Z R 3-Z      wherein X is a C2 or a C 3  unsaturated, substituted or unsubstituted alkyl radical, R is independently selected from the group consisting of Cl, Br, I or H, and z is 1 to 3.   
     
     
         21 - 42 . (canceled)