| 摘要 |
FIELD: polymerization catalysts. ^ SUBSTANCE: catalytic component according to invention contains magnesium, titanium, halogen, and electron donor, wherein the latter contains at least one compound, notably polyol ester I having general formula R1CO-O-CR3R4-A-CR5R6-O-CO-R2 (I), wherein groups R1 and R2, the same or different, represent substituted or unsubstituted hydrocarbon residue having 1 to 20 carbon atoms; groups R3-R5, the same or different, are selected from group consisting of hydrogen, halogen, and above-defined hydrocarbon residue, said groups R3-R6 optionally containing one or several heteroatoms substituting carbon and/or hydrogen atom, wherein said heteroatoms are selected from group consisting of oxygen and halogen atoms, or two or more groups R3-R6 being connected with each other to form saturated or unsaturated monocyclic ring; and A represents bivalent linking group between two hydrocarbon radicals having from 1 to 10 atoms, said linking group being selected from group consisting of aliphatic, alicyclic, and aromatic bivalent radicals and can bear linear or branched C1-C20-substituents, provided that two or more substituents of said linking group and above-defined R3-R6 groups can be interconnected to form saturated or unsaturated monocyclic ring. Invention further discloses catalyst containing above-defined solid catalytic component and its employment in polymerization of CH2=CHR hydrocarbons, wherein R represents hydrogen or C1-C6-alkyl group. ^ EFFECT: enabled preparation of polymers characterized by high stereoregularity and increased polymerization yield. ^ 34 cl, 6 tbl, 110 ex |
