Claims
- 1. A process for the preparation of fluorohalogenated ethers having the formula:
- (R).sub.n C(F).sub.m --O--CAF--CA.sup.1 F.sub.2
- wherein A and A', alike or different from each other, are chlorine or bromine, R is an alkyl or polyether radical containing from 1 to 20 carbon atoms, wholly halogenated with bromine, chlorine and/or fluorine, n is an integer from 1 to 2, m is an integer equal to 3-n, said process consisting in reacting in liquid phase a fluoroxycompound (R).sub.n C(F).sub.m --OF with an olefin CAF.dbd.CA'F, at temperature between -150.degree. and 0.degree. C., characterized in that the fluoroxycompound is continuously fed into the reaction phase in the form of a solution having a concentration less than 50% by weight in an inert solvent, the olefin being fed in the liquid state, optionally in an inert solvent, all at the beginning into the reactor or continuously, in such a manner to have always an excess of the olefin in the reaction phase.
- 2. Process according to claim 1, wherein a chlorofluorocarbon or a perfluorocarbon or a perfluoroether or a perfluoropolyether is used as inert solvent.
- 3. Process according to claim 1, carried out at a temperature comprised between -40.degree. C. and -100.degree. C.
Priority Claims (1)
Number |
Date |
Country |
Kind |
22349 A/86 |
Nov 1986 |
ITX |
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Parent Case Info
This application is a continuation of application Ser. No. 119,170, filed Nov. 10, 1987, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4577044 |
Campbell et al. |
Mar 1986 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
201871 |
Nov 1986 |
EPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
119170 |
Nov 1987 |
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