C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 17/383 (2006.01) C07C 17/386 (2006.01) C07C 21/18 (2006.01)
Patent
CA 2717216
Disclosed herein is an azeotrope or azeotrope-like composition comprising 3,3,3-trifluoropropene and hydrogen fluoride. Also disclosed herein are processes for separating 3,3,3-trifluoro-propene and hydrogen fluoride by azeotrop- ic distillation both with and without an added entrainer compound. Also disclosed herein are processes for separating 1,1,1, 2-tetrafluoropropane and/or 1,1,1, 3-tetrafluoropropane, and 3,3,3-trifluoropropene from hydrogen fluoride by azeotropic distillation both with and without an added entrainer.
L'invention concerne une composition azéotropique ou de type azéotropique composée de 3,3,3-trifluoropropène et de fluorure d'hydrogène. L'invention concerne également des procédés de séparation du 3,3,3-trifluoropropène et du fluorure d'hydrogène par distillation azéotropique à la fois avec et sans ajout d'un agent entraînant. L'invention concerne en outre des procédés de séparation de 1,1,1,2-tétrafluoropropane et/ou de 1,1,1,3-tétrafluoropropane, et de 3,3,3-trifluoropropène du fluorure d'hydrogène par distillation azéotropique à la fois avec et sans ajout d'un agent entraînant.
E. I. Du Pont de Nemours And Company
Torys Llp
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