PRODUCTION OF DICHLOROFLUOROACETYL HALIDES

Title:

PRODUCTION OF DICHLOROFLUOROACETYL HALIDES

Document Type and Number:

Japanese Patent JPH11263744

Kind Code:

A

Abstract:

To provide a method for obtaining high-purity dichlorofluoroacetyl fluoride while suppressing the formation of an undesirable by-product.

This method for producing dichlorofluoroacetyl fluoride (CFCl2COF) comprises steps of (a) the fluorination of a trichloroacetyl halide with hydrogen fluoride(HF) in a reactor which is packed with a fluorinating catalyst and has a temperature distribution in a range of 175°C to 275°C between an inlet for a reaction reagent and an outlet for a reaction product, (b) the distillation of the reaction product followed by the recycle of trichloroacetyl fluoride and the recovery of a mixture comprising HF and CFCl2COF, (c) the separation of the components of the mixture of HF/CFCl2COF by cooling the mixture to a temperature lower than -10°C and arbitrarily the recycle of HF.

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Inventors:

GAVEZOTTI PIERO (IT)
ABUSLEME JULIO A (IT)
TORTELLI VITO (IT)

Application Number:

JP410399A

Publication Date:

September 28, 1999

Filing Date:

January 11, 1999

Export Citation:

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Assignee:

AUSIMONT SPA (IT)

International Classes:

B01J23/26; C07B61/00; C07C51/58; C07C51/60; C07C51/62; C07C51/64; C07C55/40; (IPC1-7): C07C51/58; B01J23/26; C07C51/64; C07C55/40

Attorney, Agent or Firm:

Shintaro Nogawa

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