Title:
【発明の名称】ポリフルオルクロル-及びペルフルオルカルボン酸クロリドの製法
Document Type and Number:
Japanese Patent JP2956024
Kind Code:
B2
Abstract:
A process is described for the preparation of polyfluorochloro- and perfluorocarboxylic acid chlorides, for example the preparation of perfluoropropionyl chloride, chlorodifluoroacetyl chloride and trifluoroacetyl chloride. In these reactions, starting materials are employed which have a CHCl2 group which is converted into the C(O)Cl group by means of photochemical oxidation with oxygen with an addition of chlorine and activating irradiation. The reaction is carried out in such a way that the light used for irradiation has a wavelength lambda >/= 290 nm. The process is preferably carried out under atmospheric pressure. Excellent conversion rates combined with high selectivity are achieved when doped Hg radiators are used.
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Inventors:
MATSUKUSU BURAUN
BERUNAA RUUDORUFU
KERUSUTEIN AIHIHORUTSU
BERUNAA RUUDORUFU
KERUSUTEIN AIHIHORUTSU
Application Number:
JP31882694A
Publication Date:
October 04, 1999
Filing Date:
December 21, 1994
Export Citation:
Assignee:
ZORUFUAI FURUUORU UNTO DERIUAATE GMBH
International Classes:
B01J19/08; C07B61/00; C07C51/58; C07C53/46; (IPC1-7): C07C51/58; B01J19/08; C07C53/46
Domestic Patent References:
| JP7118197A | ||||
| JP6078935A |
Other References:
【文献】米国特許5259938(US,A)
Attorney, Agent or Firm:
Toshio Yano (2 outside)