Thermoplastic aromatic polyetherketones

Details Thermoplastic aromatic polyetherketones Thermoplastic aromatic polyetherketones

C - Chemistry, Metallurgy

08

G

402/37

C08G 65/40 (2006.01)

Patent

CA 1257738

Abstract Aromatic polyetherketones containing the repeat units:- - O - Ph - O - Ph - CO - Ph - I and - O - Ph - Ph - O - Ph - CO - Ph - II in the relative molar proportions I : II of 95 : 5 to 60 : 40, preferably 90 : 10 to 60 : 40. The polymer typically has a melt viscosity of at least 0.06 kN.s.m.-2 preferably at least 0.1 kN.s.m.-2. Preferred polymers are tough. The polymers may be made by condensation of hydroquinone, 4,4'-dihydroxydiphenyl and 4,4,' - difluorobenzophenone in the presence of an alkali metal carbonate or bicarbonate and of an aromatic sulphone solvent, eg diphenylsulphone. Polycondensation is effected at 150-400°C. The polymers are very useful for wire coating.

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