AROMATIC COPOLYESTERS AND SYNTHESIS METHOD THEREOF Russian patent published in 2010 - IPC C07C69/00 C07C69/90 

FIELD: chemistry.

SUBSTANCE: invention relates to high-molecular weight compounds, particularly to aromatic copolyesters,

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where n=1, 5, 10, 20. or m=1-100. Said compounds are obtained through a reaction between oligosulphones based on diane or phenolphthalein with polycondensation degree equal to 1, 5, 10, 20 and diacyl chlorides of terephthaloyl-di(p-oxybenzoates) through acceptor-catalytic polycondensation in chlorinated organic solvents.

EFFECT: copolyesters have high value of intrinsic viscosity, thermal stability and heat resistance and can be used as heat resistant construction materials.

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