IMPROVED PROCESS TO MANUFACTURE 2-CHLORO-1,1,1,2-TETRAFLUOROPROPANE(HCFC-244BB)

摘要

PURPOSE: A method for preparing 2-chloro-1,1,1,2-tetrafluoropropane(HCFC-244bb) is provided to prevent undesired by-products by co-feeding HCl and HF with 2-chloro-3,3,3-trifluoropropene. CONSTITUTION: A method for preparing 2-chloro-1,1,1,2-tetrafluoropropane(HCFC-244bb) comprises a step of reacting 2-chloro-3,3,3-trifluoropropene with hydrogen fluoride in the presence of hydrochloride and liquid fluorinated catalyst, wherein the hydrochloride is added to the reaction from an outer supplier under the pressure of 100 psig or more.