Process for purifying 1-chloro-3,3,3-trifluoropropene
AssigneeArkema France
InventorsEmmanuel Boussarie, Kevin Hisler, Anne Pigamo
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Abstract
The present invention relates to a process for neutralizing a composition A comprising 1-chloro-3,3,3-trifluoropropene, 1,1-dichloro-1,3,3-trifluoropropane and one or more acid compound(s) of formula HX with X═F or Cl; said process comprising the step a) of bringing said composition A into contact with a solution B under conditions capable of limiting the formation of 1-chloro-1,3,3-trifluoropropene.
Claims14
A process for neutralizing a composition A comprising 1-chloro-3,3,3-trifluoropropene, 1,1-dichloro-1,3,3-trifluoropropane and one or more acid compound(s) of formula HX with X═F or Cl;
- said process comprising the step a) of bringing said composition A into contact with a solution B under conditions capable of limiting the formation of 1-chloro-1,3,3-trifluoropropene, wherein solution B is a NaOH solution with a weight content of NaOH of from 5 to 40% by weight.
A composition comprising 1-chloro-3,3,3-trifluoropropene and 1-chloro-1,3,3-trifluoropropene, the molar content of 1-chloro-1,3,3-trifluoropropene being less than 110 ppm in said composition, wherein the molar content of 1-chloro-3,3,3-trifluoropropene in said composition is greater than 90%.
A process for preparing 1-chloro-1,3,3-trifluoropropene by dehydrochlorination of 1,1-dichloro-1,3,3-trifluoropropane in the presence of a NaOH solution with a weight content of NaOH of from 5 to 40% by weight.
Dependencies are inferred from the claim text.