| abstract |
catalyst component for olefin polymerization, process for preparing the catalyst component 4, catalyst for the polymerization of an olefin and process for polymerizing olefins, a catalyst component for the polymerization of olefins is disclosed, which comprises at least one donor compound electrons (a) of the diol ester type and at least one electron donor compound (b) of the 10 diether type, among others, with the molar ratio of a to b being 0.55 to 50. a method of preparing the catalyst component, a catalyst comprising the catalyst component, and a method of polymerizing olefins using the catalyst that can be especially used for preparing low ash polypropylene. |