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US 6,124,510 AGranted
1234ze preparation
AssigneeElf Atochem North America, Inc.
InventorsMaher Y. Elsheikh, Paul D. Fellenger
Life of this patent
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Abstract
Preparation of cis/trans 1234ze monomer is provided, by dehydrofluorination of 245fa using an alkaline solution or using a gas phase catalyzed process.
Claims3
A process for the preparation of cis/trans 1,1,1,3-tetrafluoro-2 -propene which comprises (a) contacting 1,1,1,3,3-pentafluoropropane with an oxygen-containing gas in the presence of a fluorided catalyst selected from Cr.sub.2 O.sub.3 or Cr/Ni/AlF.sub.3, and (b) recovering cis/trans 1,1,1,3-tetrafluoro-2-propene from the resulting reaction mixture.
Dependencies are inferred from the claim text.