公开(公告)号：US3884775A

公开(公告)日：1975-05-20

申请号：US34060173

申请日：1973-03-12

Applicant: AGENCY IND SCIENCE TECHN

Inventor： NAGASE SHUNJI ,  BABA HAJIME ,  KODAIRA KAZUO ,  OKAZAKI KOOSHI

IPC: C07C41/22 ,  C07C43/12 ,  C25B3/08 ,  C25B9/00 ,  B01K3/00

CPC classification number: C07C41/22 ,  C25B3/08 ,  C25B9/00 ,  C07C43/123

Abstract: Partially chlorinated ethers are electrolytically fluorinated in anhydrous hydrogen fluoride. The gas which is produced consequently is passed through water and the aqueous solution of sodium sulfite-sodium hydroxide for the removal of by-products and thereafter cooled and collected. The collected product is a mixture consisting of fluorinated ethers and fluorocarbons. Chlorofluoroethers which the present invention aims to obtain are separated from this mixture by additional treatments of distillation, gas chromatography, etc.