Fluorination of Chlorinated Trifluoromethyl Ethers
作者:Akira Sekiya、Kunimasa Ueda
DOI:10.1246/cl.1991.1421
日期:1991.8
Chlorine atoms in the chlorinated trifluoromethyl ether prepared from the reaction between chlorinated ethylenes and trifluoromethyl hypofluorite were fluorinated directly by fluorine gas. Tin(II) fluoride/sodiumfluoride system was effective in the fluorination.
TFE-based thermoprocessable copolymers having the following composition, expressed in percentage by moles on the total of the monomers: A) from 0.01 to 15% of the monomer of formula:
CF
2
═CFOCF
2
OCF
3
(a);
A1) tetrafluoroethylene from 99.99 to 85%; optionally B) one or more (per)fluorinated comonomers having at least one unsaturation of ethylene type, different from TFE; the sum of the molar percentages A)+B) being such as to give polymers showing at least one melting peak at the thermogravimetric analysis (DSC).
[EN] PROCESS FOR PREPARING FLUOROHALOGENOETHERS<br/>[FR] PROCÉDÉ DE PRÉPARATION DE FLUOROHALOGÉNOÉTHERS
申请人:SOLVAY SPECIALTY POLYMERS IT
公开号:WO2019110710A1
公开(公告)日:2019-06-13
The present invention concerns a process for preparing fluorohalogenoethers in a microreactor.
本发明涉及一种在微反应器中制备氟卤基醚的方法。
[EN] METHOD FOR THE MANUFACTURE OF PERFLUOROVINYLETHERS<br/>[FR] PROCÉDÉ DE FABRICATION DE PERFLUOROVINYLÉTHERS
申请人:SOLVAY SPECIALTY POLYMERS IT
公开号:WO2018011142A1
公开(公告)日:2018-01-18
The invention pertains to a method for the manufacture of a perfluorovinylether by hydrodehalogenation of a halofluoroether (HaloFE) having general formula (l-A) or RfO-CRf'X-CRf"Rf"'X' (l-A) wherein Rf represents a C1-C6 perfluoro(oxy)alkyl group; Rf', Rf" and Rf'", equal or different from each other, independently represent fluorine atoms or C1-C5 perfluoro(oxy)alkyl groups; X and X', equal or different from each other, are independently selected from CI, Br or I; (l-B) wherein Rf* and Rf*', equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoro(oxy)alkyl groups; Y1 and Y2, equal or different from each other, independently represent fluorine atoms or C1-C3 perfluoroalkyl groups; X and X' are as above defined; said method comprising contacting said halofluoroether (HaloFE) with hydrogen in the presence of a catalyst comprising at least one transition metal (M) of group VI 11 B and tin.