Ausimont S.r.l.

Montedison S.p.a.

Ausimont S.p.a.

Montefluos S.p.a.

Austimont S.r.l.

Antonio Marraccini

Antonio Pasquale

Filippo M Carlini

Giuseppe Marchionni

Giorgio Maranzana

Tiziana Fiorani

Anna M Staccione

Michele Pontevivo

Walter Navarrini

Gabriele Perego

Giorgio Guglielmo

Giorgio Bottaccio

Alessandro Malacrida

Dario Sianesi

Giorgio Bornengo

Silvana Modena

Luigi Balducci

Marco Vincenti

Giuseppe Marchinonni

Giovanni Gustalla

Marcello Pieroni

Lamberto Roberti

Giovanni Guastalla

The invention relates to a process for preparing perhaloethers from perhaloolefins and to a few 'per se' new classes of perhaloethers thereby obtained. The process consists in reacting a perhalomonoolefin with a fluoroxy compound R.sub.x --OF (wherein R.sub.x represents a perhalogenated alkyl radical) at a temperature not exceeding 20.degree. C. in a liquid reaction medium and in the presence of inert gases.

Process for preparing perhaloethers from perhaloolefins and new

A process for preparing perhaloethers from perhaloolefins by reacting at least one fluorooxy compound R.sub.x --OF, wherein R.sub.x is a perhaloalkyl radical, with a perfluoroolefin in a liquid phase, optionally containing an organic solvent inert to the perfluoroolefin, while maintaining the temperature of the liquid phase in the range of -30.degree. to -120.degree. C. The process includes continuously feeding to the liquid phase a stream of an inert gas and a gaseous stream of the fluorooxy compound.

Process for the preparation of halogenated polyethers of the general formula: ##STR1## wherein X=Cl or F, R.sub.F and R'.sub.F either equal to or different from each other, are selected from fluorinated alkyl radicals with from 1 to 20 carbon atoms, cycloalkyl, heterocyclic, alkylcycloalkyl or cycloalkylalkyl radicals, having from 5 to 20 carbon atoms, said radicals possibly containing also other halogen atoms different from fluorine and possibly ethereal oxygen atoms, by reaction with a fluoroxy or chloroxy compound of the formula: R'.sub.F OX with a fluorovinylether of the general formula: R.sub.F O--CF.dbd.CF.sub.2.

Process for the preparation of halogenated polyethers

Process for preparing peroxidic perfluoropolyethers

The invention relates to new peroxide perfluoropolyethers having formula: ##STR1## wherein: A and B are end groups,

Perfluoropolyethers and processes for their preparation

Process for preparing peroxide perfluoropolyethers

In the process for preparing chlorotrifluoroethylene telomers by reaction of chlorotrifluoroethylene with CF.sub.3 CF or R.sub.x --CF.sub.2 OF (wherein R.sub.x may be also a perfluoroalkyl radical having 1 to 10 carbon atoms), the content of telomers with end groups --F is increased or mixtures of telomers containing species with end groups --Cl are obtained by adding F.sub.2, according to particular modalities, to the reaction medium.

Process for preparing chlorotrifluoroethylene telomers and new telomers

New chlorotrifluoroethylene telomers and process for preparing them. Chlorotrifluoroethylene is reacted, at a temperature ranging from -100.degree. to +40.degree. C., with a fluoroxy compound of formula R.sub.x --CF.sub.2 OF, wherein R.sub.x represents among others a perhalogenated alkyl radical containing from 1 to 10 carbon atoms. There are obtained telomer mixtures having, among others, the following formulae: R.sub.x --CF.sub.2 --O--(M).sub.n --F; R.sub.x --CF.sub.2 --O--(M).sub.n --O--CF.sub.2 --R.sub.x ; R.sub.x --(M).sub.n --F; R.sub.x (M).sub.n --R.sub.x ; R.sub.x --CF.sub.2 --O--(M).sub.n --R.sub.x and F--(M).sub.n --F; wherein M is CF.sub.2 --CFCL and 'N' ranges from 2 to 20. Most of these telomers are new compounds.

Chlorotrifluoroethylene telomers

Preparing fluorinated conjugated olefinic products having, among others, the formulae:

Process for preparing fluorinated conjugated olefinic products and new

Preparation of fluorooxy-fluorosulfonyl-fluorocompounds by means of the direct fluorination with elemental fluorine of various .beta.-sultones according to the following reaction scheme: ##STR1## wherein R.sub.1 and R.sub.2, which can be either equal to, or different from, each other, represent a fluorine or chlorine atom, or an alkyl radical partially or totally halogenated with fluorine and/or chlorine. The reaction takes place in continuous in the presence of a fluorination catalyst, preferably constituted by an alkali-metal fluoride preferably supported on a metal material, at temperatures comprised within the range of from -30.degree. C. to +100.degree. C., and under the pressure comprised within the range of from 50 to 800 kPa; said catalyst is a fixed-bed catalyst, or is suspended in a reaction medium inert under the operating conditions.

Direct fluorination of fluoro-beta-sultones in order to produce the

Mono- and bis-hypofluorites respectively of formula: FO.sub.2 S--R.sub.f --CF.sub.2 OF and FOCF.sub.2 --R'.sub.f --CF.sub.2 OF wherein R.sub.f is perfluoroalkylene or perfluorochloroalkylene and R'.sub.f is a perfluoroalkylene or perfluorooxyalkylene, and process for preparing them, which is conducted continuously, at a temperature from 0.degree. to 60.degree. C. and comprises starting from the respective acyl fluorides ##STR1## by reaction of fluorine in the gas phase in the presence of a catalyst consisting of K, Rb, Cs or Ba fluoride, preferably supported on a metal material.

Hypofluorites and bis-hypofluorites, and process for preparing same

A process for the preparation of fluoroalkyl ethers of the formula: ##STR1## wherein: Y is Br or F;

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Novara, Italy

Antonio Marraccini