AROMATIC OLIGOESTERS AND SYNTHESIS METHOD THEREOF Russian patent published in 2011 - IPC C07C41/00 C07C43/02 C07C43/285 C07C43/29 C08G63/193 C08G65/40 

FIELD: chemistry.

SUBSTANCE: oligoesters can be used as oligomers for synthesis of polycondensation polymers and are compounds of general formula: , where n = 1-20. Aromatic oligoesters care obtained in two steps. At the first step, disodium salt of 1,1-dichloro-2,2-di(3,5-dibromo-n-oxyphenyl)ethylene, obtained from treating 1,1-dichloro-2,2-di(3,5-dibromo-n-oxyphenyl)ethylene with an alkali solution and dehydration of the formed product with 4,4'-dichlorodiphenylketone at 140°C for 1 hour. At the second step, the formed oligoketone reacts with 4,4'-dichlorodiphenylsulphone at temperature 170°C for 5 hours. Both steps take place in dimethylsulphoxide.

EFFECT: wide range of oligomers suitable for polycondensation reaction to obtain high-molecular block-copolyester sulphone ketones with good mechanical and thermal properties.

2 cl, 4 ex