Azeotrope and azeotrope-like compositions of 1,1-difluoropropene (hfo-1252zc) and other compounds
OwnerJoshua Close, Pramod K.W. Harikumar Warrier +4inventors
InventorsJoshua Close, Pramod K.W. Harikumar Warrier, Ryan J. Hulse, Haiyou Wang, Dimitrios Papanastasiou, Justin Howard
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Abstract
An azeotrope or azeotrope-like compositions consisting essentially of effective amounts of 1,1-difluoropropene (HFO-1252zc) and another compound including each of chlorotrifluoroethylene (CTFE), hexafluoropropylene (HFP), and cis-1,2-difluoroethylene (HFO-1132(Z)), and methods for separating the azeotrope or azeotrope-like compositions and/or exploiting the compositions in connection with methods of manufacturing 1,1-difluoropropene (HFO-1252zc).
Claims20
An azeotrope or azeotrope-like composition consisting essentially of effective amounts of 1,1-difluoropropene (HFO-1252zc) and one of chlorotrifluoroethylene (CTFE), hexafluoropropylene (HFP), or cis-1,2-difluoroethylene (HFO-1132(Z)).
A method for producing 1,1-difluoropropene (HFO-1252zc) comprising:
- producing a product mixture comprising an azeotrope or azeotrope-like composition consisting essentially of effective amounts of 1,1-difluoropropene (HFO-1252zc) and any one of chlorotrifluoroethylene (CTFE), hexafluoropropylene (HFP), and/or cis-1,2-difluoroethylene (HFO-1132(Z));
- and separating the 1,1-difluoropropene (HFO-1252zc) and the chlorotrifluoroethylene (CTFE), hexafluoropropylene (HFP), and/or cis-1,2-difluoroethylene (HFO-1132(Z)) to provide a product composition comprising the 1,1-difluoropropene (HFO-1252zc).
Dependencies are inferred from the claim text.