Title:
【発明の名称】ホルムアルデヒドとフッ化水素とからビス(フルオロメチル)エーテル及び/又はジフルオロメタンの製造
Document Type and Number:
Japanese Patent JP3479533
Kind Code:
B2
Abstract:
A process for the production of bis(fluoromethyl)ether by contacting formaldehyde with hydrogen fluoride in a reaction/distillation vessel. The reaction/distillation vessel is preferably a reaction/distillation column through which formaldehyde and hydrogen fluoride preferably flow in counter current. The bis(fluoromethyl)ether may be converted to difluoromethane, preferably by heating the bis(fluoromethyl)ether to elevated temperature in the presence of a metal, metal oxide, metal fluoride or metal oxyfluoride catalyst.
Inventors:
Martin, Jiyoung, Stuart
Ryan, Thomas, Antony
Spoon Sir, Raciel, Anne
Ryan, Thomas, Antony
Spoon Sir, Raciel, Anne
Application Number:
JP50905293A
Publication Date:
December 15, 2003
Filing Date:
October 30, 1992
Export Citation:
Assignee:
Ineos Frauer Holding Limited
International Classes:
C07C19/08; C07B61/00; C07C17/361; C07C41/01; C07C41/05; C07C43/12; (IPC1-7): C07C41/05; C07C17/361; C07C19/08; C07C43/12
Domestic Patent References:
| JP1249728A | ||||
| JP53112814A | ||||
| JP5294856A |
Other References:
【文献】米国特許3377394(US,A)
Attorney, Agent or Firm:
Shigeru Yagita (2 outside)