AROMATIC OLIGOESTERS AND METHOD OF PRODUCING SAID OLIGOESTERS Russian patent published in 2009 - IPC C07C41/30 C07C317/22 C08G65/40 C08G75/23 

FIELD: chemistry.

SUBSTANCE: invention relates to high-molecular compounds, particularly to aromatic oligoesters, which can be used as oligomers for producing polycondensation polymer. Description is given of aromatic oligoesters of formula:

, where n ranges from 1 to 20. Description is also given of a two-step method of producing said oligomers, in which at the first step, 4,4'-dioxydiphenylpropane is reacted with 4,4'-dichlorodiphenyl ketone in an aprotic dipolar solvent - dimethylsulphoxide at 140°C in an atmosphere of inert gas for 1 hour. At the second step, 4,4-dichlorodiphenyl sulfone is added to the formed dimer, and the reaction is carried out at 160°C for 3 hours.

EFFECT: use of proposed oligoesters allows for obtaining a block of copolyesters with high value of intrinsic viscosity and molecular weight, thermal stability and good deformation-strength properties.

2 cl, 4 ex