METHOD FOR PRODUCING CHLOROFLUOROBUTANE (CFB)

Title:

METHOD FOR PRODUCING CHLOROFLUOROBUTANE (CFB)

Document Type and Number:

WIPO Patent Application WO/2024/024869

Kind Code:

A1

Abstract:

To provide a method for producing chlorofluorobutane (CFB) by dimerizing trichloroethylene (TCE) to generate chlorinated butadiene and fluorinating the hydrogen atoms of this chlorinated butadiene.　Trichloroethylene (TCE) is dimerized at a temperature of 100°C or more in the presence of a free radical generator using a dimer represented by formula (1) from TCE as a solvent. Hexachlorobutadiene (C4Cl6) is produced by chlorination and dehydrochlorination from the dimer, and the hexachlorobutadiene is fluorinated to produce chlorofluorobutane (CFB).

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Inventors:

KIKUCHI SHO (JP)
OKUYAMA YOHEI (JP)
KISHI KAZUKI (JP)

Application Number:

PCT/JP2023/027479

Publication Date:

February 01, 2024

Filing Date:

July 27, 2023

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Assignee:

KANTO DENKA KOGYO KK (JP)

International Classes:

C07C17/281; C07B61/00; C07C17/20; C07C17/25; C07C19/10; C07C21/04

Foreign References:

JPH10204007A	1998-08-04
CN111116302A	2020-05-08
CN106966859A	2017-07-21

Attorney, Agent or Firm:

YAMAMOTO, Osamu et al. (JP)

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