COMPONENTS OF CATALYST FOR POLYMERIZATION OF OLEFINS, CATALYST, METHOD FOR PREPARING PROPYLENE POLYMERS AND PROPYLENE POLYMER

FIELD: chemical technology, catalysts. ^ SUBSTANCE: invention relates to the catalyst component used in polymerization of olefins comprising Mg, Ti, halogen and at least two electron-donor compounds wherein indicated catalyst component and at least one of electron-donor compounds repenting in the amount in the range from 20 to 50 mole% with respect to the complete amount of donors are chosen from succinic acid esters that are not extractable by above 25 mole% and at least one additional electron-donor compound that is extractable by above 35 mole%. Indicated components of catalyst provides preparing polymers possessing good insolubility level in xylene, high content level of stereoblocks and broad MWD value that is suitable for preparing polymers used in the region using bi-oriented polypropylene films. Also, invention relates to catalyst used in polymerization of olefins, methods for preparing propylene polymers and propylene polymer. ^ EFFECT: improved preparing method, valuable properties of catalyst. ^ 24 cl, 3 tbl, 17 ex