Title:
【発明の名称】1,1―ジクロロテトラフルオロエタンの製造方法
Document Type and Number:
Japanese Patent JP2930697
Kind Code:
B2
Abstract:
A process for the manufacture of 1,1-di-chlorotetrafluoroethane, CF3CCl2F (CFC-114a), substantially free of 1,2-dichlorotetrafluoroethane, CClF2CClF2 (CFC-114), and over-fluorinated products (e.g., CF3CClF2 and CF3CF3) comprising the steps of contacting a trichlorotrifluoroethane liquid phase (e.g., a mixture of 1,1,1-trichlorotrifluoroethane, CCl3CF3 (CFC-113a) and 1,1,2-trichlorotrifluoroethane, CClF2CCl2F (CFC-113)] with an antimony pentahalide catalyst (e.g., SbCl5-xFx, where x is 0 to 3) and separating a gaseous 1,1-dichlorotetrafluoroethane product. Nearly quantitative conversion of CF3CCl3 to CF3CCl2F, with no perceptible production of CClF2CClF2, can be achieved in a continuous process. The CF3CCl2F is useful as an intermediate in the manufacture of hydrochlorofluorocarbons and hydrofluorocarbons.
Inventors:
UIRIAMU HENRII GANPUREKUTO
JON MAAKU RONGORIA
FURANKU JEI KURISUTOFU
JON MAAKU RONGORIA
FURANKU JEI KURISUTOFU
Application Number:
JP29097490A
Publication Date:
August 03, 1999
Filing Date:
October 30, 1990
Export Citation:
Assignee:
II AI DEYUHON DE NIMOASU ANDO CO
International Classes:
C07B61/00; C07C17/20; C07C19/08; C07C19/12; B01J27/06; (IPC1-7): C07C19/12; C07C17/20
Domestic Patent References:
| JP358946A |
Attorney, Agent or Firm:
Yoshikazu Tani (2 outside)