Perfluoropolyether, die ein anderes Halogen ausser Fluor enthalten und die eine Säureendgruppe haben

Perfluoropolyethers having an acid end group, such as acyl fluoride (or chloride) or a carboxyl group or derivatives thereof, the other end group being a perfluoroalkyl group containing one or two halogen atoms different from fluorine, are prepared by photooxidation of C3F6 and/or C2F4 in the presen...

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Bibliographic Details
Main Authors STACCIONE, ANNA., I-20144 MILAN, IT, MARCHIONNI, GIUSEPPE., I-20133 MILAN, IT
Format Patent
LanguageGerman
Published 25.04.1996
Edition6
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
APPARATUS THEREFOR
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL METHODS OF ORGANIC CHEMISTRY
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC CHEMISTRY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Perfluoropolyethers having an acid end group, such as acyl fluoride (or chloride) or a carboxyl group or derivatives thereof, the other end group being a perfluoroalkyl group containing one or two halogen atoms different from fluorine, are prepared by photooxidation of C3F6 and/or C2F4 in the presence of a perhalogenated ethylene containing 1 to 4, preferably 1 or 2, halogen atoms different from fluorine, and by subsequent thermal or photochemical decomposition of the peroxide groups present in the photooxidation product.
Bibliography:Application Number: DE19896024800T