HFO-1234yf INHIBITED SOLUTIONS

Abstract

The present invention provides a composition comprising 2,3,3,3-tetrafluoropropene and α-terpinene particularly useful in automotive air conditioning systems and devices, commercial refrigeration systems and devices, chillers, residential refrigerator and freezers, general air conditioning systems, heat pumps, and the like.

1 . A composition comprising HFO-1234yf and α-terpinene. 
     
     
         2 . The composition of  claim 1  wherein the composition consists essentially of HFO-1234yf and α-terpinene. 
     
     
         3 . The composition of  claim 1  wherein the composition consists of HFO-1234yf and α-terpinene. 
     
     
         4 . The composition of  claim 1  wherein the α-terpinene is present in an amount of at least about 0.0001 percent by weight-based on the amount of HFO-1234yf and α-terpinene present in the composition. 
     
     
         5 . The composition of  claim 1  wherein the α-terpinene is present in an amount of from about 0.0001 to about 1 percent by weight based on the amount of HFO-1234yf α-terpinene present in the composition and wherein said composition has a Non-Volatile Residue (NVR) value less than 100 ppm after storage for a period of 30 days at a temperature of about −10° C. 
     
     
         6 . A heat transfer composition comprising a composition of  claim 1 . 
     
     
         7 . The heat transfer composition of  claim 6 , wherein the composition further comprises a lubricant selected from polyol esters (POEs) and poly alkylene glycols (PAGs), poly vinyl ethers, silicone oil, mineral oil, alkyl benzenes (ABs) and poly(alpha-olefin) (PAO). 
     
     
         8 . A method of inhibiting the formation of HFO-1234yf polymerization products comprising combining α-terpinene and said HFO-1234yf to produce a composition having a Non-Volatile Residue (NVR) of the HFO-1234yf less than 0.01 weight percent (100 ppm). 
     
     
         9 . A container containing a composition comprising HFO-1234yf and α-terpinene and having thereon a threaded valve with a cumene hydroperoxide containing sealant on the threaded valve.