Monocyclopentadienyl complexes
AssigneeBasell Polyolefine GmbH
InventorsShahram Mihan, Markus Enders, Pablo Fernandez
Life of this patent
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Abstract
Monocyclopentadienyl complexes in which the cyclopentadienyl system is substituted by at least one bridged donor, where the bridge contains at least one atom of group 14 of the Periodic Table and at least one atom of group 15 or 16 of the Periodic Table, and a catalyst system comprising at least one of the monocyclopentadienyl complexes, and also methods of preparing them, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and the preparation of the associated cyclopentadienyl system.
Claims6
The monocyclopentadienyl complex comprising formula Cp-Z-A-MA (II), where:
- Cp-Z-A is
- where:
- E1A-E5A are each carbon;
- R1A-R4A are each, independently of one another, hydrogen, a C1-C22-alkyl, a C2-C22-alkenyl, a C6-C22-aryl, an arylalkyl comprising from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part, or SiR5A3, where R1A-R4A optionally can be substituted by at least one halogen and two vicinal R1A-R4A optionally can be joined to form a five-, six- or seven-membered ring;
- R5A are each, independently of one another, hydrogen, a C1-C20-alkyl, a C2-C20-alkenyl, a C6-C20-aryl, an arylalkyl comprising from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part, or two geminal R5A optionally can be joined to form a five- or six-membered ring;
- Z is a divalent bridge between A and Cp and is
- where
- L1A is carbon, silicon or germanium;
- D1A is an atom of group 15 or 16 of the Periodic Table of Elements;
- n is 0 when D1A is an atom of group 16, and is 1 when D1A is an atom of group 15;
- R6A-R8A are each, independently of one another, hydrogen, a C1-C20-alkyl, a C2-C20-alkenyl, a C6-C20-aryl, an arylalkyl comprising from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part, or SiR9A3, where R6A-R8A optionally can be substituted by at least one halogen and two geminal or vicinal R6A-R8A optionally can be joined to form a five- or six-membered ring;
- R9A are each, independently of one another, hydrogen, a C1-C20-alkyl, a C2-C20-alkenyl, a C6-C20-aryl or an arylalkyl comprising from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part, a C1-C10-alkoxy or a C6-C10-aryloxy, or two R9A optionally can be joined to form a five- or six-membered ring;
- A comprises formula (IV):
- where
- E6A-E9A are each, independently of one another, carbon, or nitrogen;
- R13A-R16A are each, independently of one another, hydrogen, a C1-C20-alkyl, a C2-C20-alkenyl, a C6-C20-aryl, an arylalkyl comprising from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part, or SiR17A3, where R13A-R16A optionally can be substituted by at least one halogen or nitrogen, or two vicinal R13A-R16A or R13A and Z optionally can be joined to form a five- or six-membered ring;
- R17A are each, independently of one another, hydrogen, a C1-C20-alkyl, a C2-C20-alkenyl, a C6-C20-aryl or an arylalkyl comprising from 1 to 10 carbon atoms in the alkyl part and 6-20 carbon atoms in the aryl part, or two R17A optionally can be joined to form a five- or six-membered ring;
- p is 0 when E6A-E9A is nitrogen, and is 1 when E6A-E9A is carbon;
- and
- MA is chromium, molybdenum, or tungsten.
Dependencies are inferred from the claim text.