Process for preparing 1,1,1,2,2-Pentafluoro-3, 3-Dichloropropane and 1,1,2,2,3-Pentafluoro-1,3-Dichloropropane
申请人:DAIKIN INDUSTRIES, LTD.
公开号:EP0524621A1
公开(公告)日:1993-01-27
1,1,1,2,2-Pentafluoro-3,3-dichloropropane and 1,1,2,2,3-pentafluoro-1,3-dichloropropane are prepared by reacting tetrafluoroethylene a mixture of chloroform and difluorochloromethane in the presence of a catalyst selected from the group consisting of anhydrous titanium tetrachloride and a titanium chlorofluoride of the formula: TiClxFy in which x and y are independently a number of larger than 0 and smaller than 4 provided that a sum of x and y is 4, by which by-production of 2,2-dichloro-1,1,1,3,3-pentafluoropropane is suppressed.
1,1,1,2,2-五氟-3,3-二氯丙烷和 1,1,2,2,3-五氟-1,3-二氯丙烷是由四氟乙烯与氯仿和二氟氯甲烷的混合物在选自无水四氯化钛和氯氟化钛组成的催化剂存在下反应制备的:TiClxFy,其中 x 和 y 独立地为大于 0 小于 4 的数字,条件是 x 和 y 的总和为 4,通过该方法可抑制 2,2-二氯-1,1,1,3,3-五氟丙烷的副产。