Title:
【発明の名称】脂肪族フルオロカーボンの製法
Document Type and Number:
Japanese Patent JP2003505439
Kind Code:
A
Abstract:
Processes for preparing a variety of fluorocarbons are disclosed. Processes are described wherein the yields of desired products are increased by endlessly converting the undesired products to reactive intermediates. Trifluoroethylene is prepared in greater than 50 % yield by pyrolizing 1-chloro-2,2,2-trifluoroethane at a temperature about 725 DEG C. 1,1,1,3,3-Pentafluoropropylene is prepared by pyrolyzing 1-chloro-2,2,2-trifluoroethane in the presence of chlorodifluoromethane. Trifluoroethylene is prepared by pyrolyzing 1,2,2,2-tetrafluoroethane. 1-Chloro-2,2-difluoroethylene is prepared by pyrolyzing 1-chloro-2,2,2-trifluoroethane. 1,1-Dichloro-2,2-difluoroethylene is prepared by pyrolyzing 1-chloro-2,2,2-trifluoroethane in the presence of chlorodifluoromethane and hydrogen chloride. 1,1,1,2,3,4,4,4-Octafluoro-2-butene is prepared by pyrolyzing 1-chloro-1,2,2,2-tetrafluoroethane. 1,1,1,2,3,4,4,4-Octafluoro-2-butene is prepared by pyrolyzing, 1,1,2,2,2-pentafluoroethane. 1,2,2,2-Tetrafluoroethane is prepared by pyrolyzing 1,1,2,2,2-pentafluoroethane. 1,1-Dichloro-1,2,2,2-tetrafluoroethane is prepared by pyrolyzing 1-chloro-1,2,2,2-tetrafluoroethane.
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Inventors:
Splay, lee
Graham, Daniel
Fair Standing, Lewis
Graham, Daniel
Fair Standing, Lewis
Application Number:
JP2001512473A
Publication Date:
February 12, 2003
Filing Date:
July 21, 2000
Export Citation:
Assignee:
Halo Carbon Products Corporation
International Classes:
C07C17/00; C07C17/20; C07C17/21; C07C17/23; C07C17/25; C07C17/269; C07C19/08; C07C19/12; C07C21/18; (IPC1-7): C07C17/25; C07C17/20; C07C17/21; C07C17/23; C07C17/269; C07C19/08; C07C19/12; C07C21/18
Attorney, Agent or Firm:
Takashi Ishida (4 others)