| 摘要 |
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 140C 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 160C 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 |
