Polymeric ligands, polymeric metallocenes, catalyst systems, preparation, and use

US6057410A · kind A · utility

Assignee

• Phillips Petroleum Company · US

Inventors

• Helmut G. Alt · Bayreuth, DE
• Peter Schertl · Leverkusen, DE
• Bernd Peifer · Bayreuth, DE
• Syriac J. Palackal · Bartlesville, US
• M. Bruce Welch · Bartlesville, US

Key dates

• Filing date: Mar 26, 1998
• Grant date: May 2, 2000
• Expiry date: Mar 26, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S526/943
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polymeric ligands, polymeric metallocenes, and processes for preparing same are provided. The process for preparing polymeric metallocenes comprises reacting a polymeric ligand, a transition metal compound, and an alkali metal compound. In one embodiment, a process for preparing polymeric ligands comprises reacting at least one bridged cyclopentadienyl-type monomer and an initiator under polymerization conditions. In another embodiment, a polymeric ligand is represented by the formula [Q'].sub.n, wherein Q' is a unit containing at least one bridged cyclopentadienyl-type group and wherein n is 1-5000. In another embodiment, a polymeric metallocene is represented by the formula [Q"MX.sub.m ].sub.n, wherein Q" is a unit containing at least one fluorenyl-type group, M is a transition metal, each X is individually a hydrocarbyl group containing 1 to 20 carbon atoms, an alkoxy group containing 1 to 12 carbon atoms, an aryloxy group containing 6 to 20 carbon atoms, a halide, or hydride, m is 2 or 3, and wherein n is 1-5000. Other aspects of the present invention include a catalyst system comprising the polymeric metallocene and an organoaluminoxane, a method for preparing same, and a poly…