Stable 2,3,3,3-tetrafluoropropene composition

Abstract

The invention relates to a stable composition (CS) comprising at least x wt.-% 2,3,3,3-tetrafluoropropene (99.8≦x<100), at most y wt.-% unsaturated compound(s) (Ia) (0<y≦0.2) selected from among 3,3,3-trifluoropropene (HFO-1243zf) and the positional isomers of 2,3,3,3-tetrafluoropropene, such as 1,3,3,3-tetrafluoropropene (isomers Z and E) and 1,1,2,3-tetrafluoropropene, and, optionally, at most 500 ppm of 3,3,3-trifluoropropyne and/or at most 200 ppm 1,1,1,2,3-pentafluoropropene (HFO-1225ye).

1 . Stable composition comprising at least about 99.8 to 100% by weight of 2,3,3,3-tetrafluoropropene, at most about 0 to 0.2% by weight of unsaturated compound selected from the group consisting of 3,3,3-trifluoropropene (HFO-1243zf), the positional isomers of 2,3,3,3-tetrafluoropropene, 1,1,2,3-tetrafluoropropene, and mixtures thereof. 
     
     
         2 . Stable composition according to  claim 1 , characterized in that it further comprises at least one compound selected from the group consisting of 1,1,1,2-tetrafluoropropane (HFC-254eb), 1,1,1,2,3-pentafluoropropane (HFC-245eb), 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1,2-trifluoroethane (HFC-143), 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene, cyclohexafluoropropene, 1,1,1,3,3-pentafluoropropene (HFO-1225zc) and mixtures thereof. 
     
     
         3 . Stable composition according to  claim 2 , characterized in that the compound comprises at most 500 ppm of the stable composition. 
     
     
         4 . Stable composition according to  claim 1 , characterized in that it comprises at least 99.85% by weight of 2,3,3,3-tetrafluoropropene, at most about 0 to 0.15% by weight of unsaturated compound selected from the group consisting of 3,3,3-trifluoropropene (HFO-1243zf), the positional isomers of 2,3,3,3-tetrafluoropropene, 1,1,2,3-tetrafluoropropene, and mixtures thereof. 
     
     
         5 . Stable composition according to  claim 1 , characterized in that it comprises at least 99.9% by weight of 2,3,3,3-tetrafluoropropene, at most about 0 to 0.1% by weight of unsaturated compound selected from the group consisting of 3,3,3-trifluoropropene (HFO-1243zf), the positional isomers of 2,3,3,3-tetrafluoropropene, 1,1,2,3-tetrafluoropropene, and mixtures thereof. 
     
     
         6 . Stable composition according to  claim 1 , characterized in that it comprises from 99.85 to 99.98% by weight of 2,3,3,3-tetrafluoropropene, from 0.02 to 0.15% by weight of unsaturated compound(s) (Ia) chosen from 3,3,3-trifluoropropene (HFO-1243zf) and the positional isomers of 2,3,3,3-tetrafluoropropene, such as 1,3,3,3-tetrafluoropropene (Z and E isomers) and 1,1,2,3-tetrafluoropropene, and optionally at most 200 ppm of 3,3,3-trifluoropropyne and/or at most 5 ppm of 1,1,1,2,3-pentafluoropropene (HFO-1225ye) and/or at most 400 ppm of compounds (Ib). 
     
     
         7 . (canceled) 
     
     
         8 . Stable composition according to  claim 1 , characterized in that it further comprises a lubricant. 
     
     
         9 . Stable composition according to  claim 8 , characterized in that the lubricant is selected from the group consisting of polyol esters (POEs), polyalkylene glycols (PAGs), polyalkylene glycol esters, polyvinyl ethers (PVEs) and mixtures thereof. 
     
     
         10 . 2,3,3,3-Tetrafluoropropene which has a purity of greater than or equal to 99.8% by weight and less than 100% by weight and which comprises at most 0.2% by weight of unsaturated compound selected from the group consisting of 3,3,3-trifluoropropene (HFO-1243zf), the positional isomers of 2,3,3,3-tetrafluoropropene, 1,1,2,3-tetrafluoropropene, and mixtures thereof. 
     
     
         11 . 2,3,3,3-Tetrafluoropropene according to  claim 10 , characterized by a purity of greater than or equal to 99.9% by weight and less than 100% by weight and comprising at most 0.1% by weight of unsaturated compound selected from the group consisting of 3,3,3-trifluoropropene (HFO-1243zf), the positional isomers of 2,3,3,3-tetrafluoropropene, 1,1,2,3-tetrafluoropropene, and mixtures thereof. 
     
     
         12 . Stable composition according to  claim 1 , characterized in that it further comprises up to about 500 ppm of 3,3,-trifluoropropyne. 
     
     
         13 . Stable composition according to  claim 1 , characterized in that it further comprises up to about 200 ppm of 1,1,1,2,3-pentafluoropropene (HFO-1225ye). 
     
     
         14 . Stable composition according to  claim 4 , characterized in that it further comprises up to about 250 ppm of 3,3,3,-trifluoropropyne. 
     
     
         15 . Stable composition according to  claim 4 , characterized in that it further comprises up to about 50 ppm of 1,1,1,2,3-pentafluoropropene (HFO-1225ye). 
     
     
         16 . Stable composition according to  claim 5 , characterized in that further comprises up to about 200 ppm of 3,3,3,-trifluoropropyne. 
     
     
         17 . Stable composition according to  claim 5 , characterized in that it further comprises up to about 5 ppm of 1,1,1,2,3-pentafluoropropene (HFO-1225ye). 
     
     
         18 . Stable composition according to  claim 10 , characterized in that it further comprises up to about 500 ppm of 3,3,3,-trifluoropropyne. 
     
     
         19 . Stable composition according to  claim 10 , characterized in that it further comprises up to about 200 ppm of 1,1,1,2,3-pentafluoropropene (HFO-1225ye). 
     
     
         20 . Stable composition according to  claim 10 , characterized in that it further comprises up to about 500 ppm of a compound selected from the group consisting of 1,1,1,2-tetrafluoropropane (HFC-254eb), 1,1,1,2,3-pentafluoropropane (HFC-245eb), 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1,2-trifluoroethane (HFC-143), 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene, cyclohexafluoropropene, 1,1,1,3,3-pentafluoropropene (HFO-1225zc) and mixtures thereof. 
     
     
         21 . Stable composition according to  claim 11 , characterized in that it further comprises up to about 200 ppm of 3,3,3,-trifluoropropyne. 
     
     
         22 . Stable composition according to  claim 11 , characterized in that it funder comprises up to about 5 ppm of 1,1,1,2,3-pentafluoropropene. 
     
     
         23 . Stable composition according to  claim 11 , characterized in that it further comprises up to about 500 ppm of a compound selected from the group consisting of 1,1,1,2-tetrafluoropropane (HFC-254eb), 1,1,1,2,3-pentafluoropropane (HFC-245eb), 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1,2-trifluoroethane (HFC-143), 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene, cyclohexafluoropropene, 1,1,1,3,3-pentafluoropropene (HFO-1225zc) and mixtures thereof.