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US 2019/0375698 A1Published application
Compositions based on 1,1,3,3-tetrachloropropene
AssigneeArkema France
InventorsAnne PIGAMO, Bertrand COLLIER
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AssigneeArkema France
InventorsAnne PIGAMO, Bertrand COLLIER
Estimating the term…
Compositions based on F-1230za (1,1,3,3-tetrachloropropene), or on a mixture consisting of F-1230za and F-1230zd (1,3,3,3-tetrachloropropene), the manufacture thereof, and also the use thereof in particular for the production of F-1233zdE (trans-1-chloro-3,3,3-trifluoropropene), F-1234zeE (trans-1,3,3,3-tetrafluoropropene), and/or F-245fa (1,1,1,3,3-pentafluoropropane). A process for manufacturing the composition, the process including the following steps: reaction of carbon tetrachloride with ethylene to produce 1,1,1,3-tetrachloropropane (F-250fb); chlorination of F-250fb to obtain 1,1,1,3,3-pentachloropropane (F-240fa); dehydrochlorination of F-240fa to obtain 1,1,3,3-tetrachloropropene (F-1230za); one or more steps for separating out the F-1230za.
A composition comprising at least 99.5% by weight of 1,1,3,3-tetrachloropropene (F-1230za), or a mixture of 1,1,3,3-tetrachloropropene and of 1,3,3,3-tetrachloropropene (F-1230zd), and at least one additional compound chosen from a list of compounds consisting of pentachloropropanes, tetrachloropropenes other than F-1230za and F-1230zd, chlorobutenes, chlorobutanes and oxygenated compounds, said compound and/or the total amount of said compounds being present in the composition in a content of less than or equal to 0.5% by weight.
Dependencies are inferred from the claim text.