COPOLYMERIZABLE FLUORINATED COMPOUNDS, A PROCESS FOR THEIR PREPARATION AND THERMOPLASTIC FLUOROPOLYMERS OBTAINABLE THEREFROM

COPOLYMERIZABLE FLUORINATED COMPOUNDS, A PROCESS FOR THEIR PREPARATION AND THERMOPLASTIC FLUOROPOLYMERS OBTAINABLE THEREFROM

Copolymerizable fluorinated compounds, a process for their preparation and thermoplastic fluoropolymers obtainable therefrom A 2-allyl-perfluoroalkyl-trifluorovinyl ether of the formula (I) wherein R1F and R2F represent either -CF3 or, together, (CF2)n where n = 2 or 3, is produced by a) reacting he...

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Bibliographische Detailangaben
Hauptverfasser: MARHOLD, ALBRECHT, KRUEGER, RALF, NEGELE, MICHAEL
Format: Patent
Sprache:eng ; fre
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC CHEMISTRY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:Copolymerizable fluorinated compounds, a process for their preparation and thermoplastic fluoropolymers obtainable therefrom A 2-allyl-perfluoroalkyl-trifluorovinyl ether of the formula (I) wherein R1F and R2F represent either -CF3 or, together, (CF2)n where n = 2 or 3, is produced by a) reacting hexafluoropropene oxide with a 2-allyl-substituted perfluorocycloketone or perfluoroketone, b) subjecting the resulting 2 (allylperfluorocycloalkoxy)- or 2 (allylperfluyoro-alkoxy)-perfluoropropanoic acid fluoride to alkaline saponification thereby to form the corresponding sodium salt, Le A 28 982 c) and decarboxylating the sodium salt at about 150350.degree.C. Polymers thereof produce amorphous, transparent coatings or molded items with glass transition temperatures between 60 and 150.degree.C and have good solubility characteristics in a number of organic solvents. Le A 28 982