Catalyst component
AssigneeBorealis AG
InventorsPeter Denifl, Torvald Vestberg, Hanna-Leena Rönkkö, Timo Leinonen
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Abstract
The present invention relates to a solid, particulate catalyst component having an mean particle size range of 5 to 200 μm and comprising a compound of a Group 2 metal, a compound of a transition metal of Group 4 to 6, and at least two internal electron donors being different to each other and being non-phthalic organic compounds selected from (di)esters of non-phthalic carboxylic (di)acids, 1,3-diethers and di-esters of 1,3-diol compounds and derivatives thereof, and wherein the solid particulate catalyst component is free of any external support material. The invention relates also to the preparation of the catalyst component and a polymerization process for producing propylene polymers.
Claims8
A solid, particulate catalyst component having a mean particle size range of 5 to 200 μm and comprising
- i) a compound of Group 2 metal, IUPAC, Nomenclature of Inorganic Chemistry, 1989,
- ii) a compound of a transition metal of Group 4 to 6, IUPAC, Nomenclature of Inorganic Chemistry, 1989,
- iii) a first internal electron donor and a second internal electron donor, which are different from each other,
- wherein the first internal electron donor is a non-phthalic organic compound selected from esters of non-phthalic carboxylic acids, or di-esters of 1,3-diol compounds, and
- iv) an additional internal electron donor, which is a third internal electron donor,
- wherein the second internal electron donor and the third internal electron donor are selected from esters of non-phthalic carboxylic acids, or diesters of 1,3-diol compounds,
- wherein the solid particulate catalyst component is free of any phthalic compound and external support material.
Dependencies are inferred from the claim text.