POLYPHENYLENE ETHER KETONE OXIMATE AND METHOD FOR PRODUCTION THEREOF Russian patent published in 2012 - IPC C08G65/40 C08G73/00 C07C249/04 

FIELD: chemistry.

SUBSTANCE: present invention relates to polyphenylene ether ketone oximates, as well as a method for production thereof. An elementary unit of said polyphenylene ether ketone oximate has the formula: [-O-N=C(CH₃)-C₆H₄-O-C₆H₄-C(CH₃)=N-O-C₆H₄-CO-C₆H₄]_n. The polyphenylene ether ketone oximate has reduced viscosity of 0.4-0.5 dl/g and molecular weight ranging from 40800 to 51000. Polyphenylene ether ketone oximate are obtained by non-equilibrium nucleophilic polycondensation of difluorodiphenyl ketone with diacetyl diphenyl oxide diketoxime. The reaction is carried out in dimethyl sulphoxide for 6 hours at 165°C, with reaction of equimolar amounts of potassium diacetyl diphenyl oxide dioximate with 4,4'-difluorobenzophenone. The molar ratio 4,4'-difluorobenzophenone: 4,4'-diacetyl diphenyl oxide diketoxime: KOH: K₂CO₃ is equal to 1:1:2:0.15.

EFFECT: obtained polymer has improved mechanical properties, heat-resistance, and also has a system of properties which are characteristic for both polyether formal oximates and polyether ketones.

2 cl, 3 ex