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US 2026/0296996 A1Published application
Methods for producing 1,1-difluoropropene (hfo-1252zc) from 1,1,1-trichloropropane (hcc-260fb)
OwnerHaiyou Wang, Selma Bektesevic +5inventors
InventorsHaiyou Wang, Selma Bektesevic, Joshua DeMuth, Vinayak Krishnamurti, Chen Liang, Akbar Mahdavi-Shakib, Dimitrios Papanastasiou
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Abstract
A method for producing 1,1-difluoropropene (HFO-1252zc) from 1,1,1-trichloropropane (HCC-260fb) in the form of a two-step reaction is described. Step one of the reaction includes hydrofluorination of HCC-260fb to produce 1-chloro-1,1-difluoropropane (HCFC-262fc). Step two of the reaction includes dehydrochlorination of HCFC-262fc to produce HFO-1252zc. Step one includes a catalyst, and step two may include a catalyst.
Claims20
A method for producing 1,1-difluoropropene (HFO-1252zc), comprising:
- reacting 1,1,1-trichloropropane (HCC-260fb) with hydrogen fluoride in the presence of a catalyst to produce a first product composition comprising 1-chloro-1,1-difluoropropane (HCFC-262fc);
- and
- reacting HCFC-262fc from the first product composition to produce a second product composition comprising 1,1-difluoropropene (HFO-1252zc).
Dependencies are inferred from the claim text.