METHOD FOR PREPARING FLUORINE-CONTAINING VINYL ETHER
申请人:Zhonghao Chenguang Research Institute
of Chemical Industry Company Limited
公开号:EP2781500B1
公开(公告)日:2017-11-08
A New Procedure for Preparing Perfluoroalkoxypropanoic Acid Fluorides
作者:S. M. Igumnov、G. I. Lekontseva、A. A. Shipigusev、V. F. Mukhametshin
DOI:10.1007/s11167-005-0311-2
日期:2005.3
Condensation of perfluoro carboxylic acid fluorides with hexafluoropropene epoxide in the presence of N,N, N′,N′-tetraalkyldiaminomethanes was studied.
研究了全氟羧酸氟化物与六氟丙烯环氧化物在 N,N,N′,N′-四烷基二氨基甲烷存在下的缩合反应。
Co-production of perfluoromethyl perfluorovinyl ether and perfluoroethyl
申请人:E. I. du Pont de Nemours and Company
公开号:US05777179A1
公开(公告)日:1998-07-07
A process for the production of perfluoromethyl perfluorovinyl ether (PMVE) and perfluoroethyl perfluorovinyl ether (PEVE) from hexafluoropropylene epoxide (HFPO) and a mixture comprising carbonyl fluoride (CF) and perfluoroacetyl fluoride (PAF) is disclosed. The process includes a step (a) involving the reaction of hexafluoropropylene epoxide (HFPO) with a mixture of carbonyl fluoride (CF) and perfluoroacetyl fluoride (PAF) to produce a mixture of 2,3,3,3-tetrafluoro-2-(trifluoromethoxy)propionic acid fluoride (PMPF) and 2,3,3,3-tetrafluoro-2-(pentafluoroethoxy)propionic acid fluoride (PEPF). In a second step, a mixture of PMPF and PEPF made in the step (a) is dehalocarbonylated to produce a mixture of PMVE and PEVE.