Invention Grant
US09181151B2 Process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) 有权
制备2-氯-1,1,1,2-四氟丙烷(HCFC-244bb)的方法

Process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb)
Abstract:
The invention provides an improved process to manufacture 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) by reacting 2-chloro-3,3,3,-trifluoropropene (HCFO-1233xf) with hydrogen fluoride, in a liquid phase reaction in the presence of hydrogen chloride and a liquid phase fluorination catalyst. The hydrogen chloride is added into the reaction from an external source at a pressure of about 100 psig or more. The HCFC-244bb is an intermediate in the production of 2,3,3,3-tetrafluoropropene-1 (HFO-1234yf).
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