Ziegler-Natta catalysts for olefin polymerization
AssigneeBorealis AG
InventorsVictor Sumerin, Georgy Kipiani
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Abstract
The present invention relates to use of optionally monosubstituted 2,2-di(tetrahydrofuryl)methanes, as internal donors in Ziegler-Natta catalysts to obtain polymers with desirable properties. The present disclosure further concerns Ziegler-Natta catalyst components comprising said optionally monosubstituted 2,2-di(tetrahydrofuryl)methanes and Ziegler-Natta catalysts for olefin polymerization comprising said Ziegler-Natta catalyst components as well as a method for preparing the same and their use in providing polyolefins.
Claims16
A Ziegler-Natta catalyst component for olefin polymerization, comprising:
- (i) an internal donor selected from compounds of formula (I)
- wherein
- R1 is selected from a group consisting of H, a linear or branched C1-7-alkyl, CH2OR2 and oxygen-containing heterocyclic ring;
- and R2 is selected from a group consisting of a linear or branched or cyclic C1-8-alkyl group.
A method for producing a Ziegler-Natta catalyst component, comprising adding an internal donor selected from compounds of formula (I)
- wherein
- R1 is selected from a group consisting of H, a linear or branched C1-7-alkyl, CH2OR2 and oxygen-containing heterocyclic ring;
- and R2 is selected from a group consisting of a linear or branched or cyclic C1-8-alkyl group,
- to a process of preparing the Ziegler-Natta catalyst component.
A Ziegler-Natta catalyst for olefin polymerization comprising a catalyst component comprising an internal donor selected from compounds of formula (I)
- wherein
- R1 is selected from a group consisting of H, C1-3-alkyl, CH2OR2 and oxygen-containing heterocyclic ring;
- and R2 is selected from a group consisting of a linear, branched or cyclic C1-8 alkyl group;
- or the internal donor is selected from compounds of formula (I-a) or (1-b)
- wherein in (I-a) R1a is selected from a group consisting of H, C1-3-alkyl and CH2OR2;
- and R2 is selected from a group consisting of a linear or branched or cyclic C1-8-alkyl group, and
- wherein in (1-b) R1b is selected from a group consisting oxygen-containing heterocyclic ring.
A method of olefin polymerization comprising:
- introducing into a polymerization reactor a Ziegler-Natta catalyst component according to
- compromising of an internal donor of formula (I)
- wherein
- R1 is selected from a group consisting of H, a linear or branched C1-7-alkyl, CH2OR2 and oxygen-containing heterocyclic ring;
- and R2 is selected from a group consisting of a linear or branched or cyclic C1-8-alkyl group.
Dependencies are inferred from the claim text.