FIELD: chemistry.
SUBSTANCE: invention relates to a solid component of a catalyst for polymerisation of olefins. Solid catalyst component contains magnesium halide, titanium compound having at least a Ti-halogen bond, and at least two electron-donor compounds, one of which is selected from 1,3-diesters, and the other is selected from succinates. Molar ratio ID/Ti of catalyst component is 0.30-0.90. ID corresponds to total molar amount of succinate and 1,3-diester, and molar ratio of 1.3-diester donor and succinate donor has a value greater than or equal to 0.60. Porosity of catalyst component is at least 0.30 cm3/g. Pore radius is smaller than or equal to 1 mcm. Described also is a catalyst for polymerisation of olefins and method for (co)polymerisation of olefins.
EFFECT: technical result is obtaining a catalyst which is free from phthalates and contains an internal 1,3-diester donor, having good morphological stability and high activity.
13 cl, 7 tbl, 8 ex
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