Polymerization process using a monocyclopentadienyl compound as a catalyst component

US6218489A · kind A · utility

Assignee

• Targor GmbH · DE

Inventors

• Michael Riedel · Essen, DE
• Gerhard Erker · Münster, DE
• Lothar Duda · Munster, DE

Key dates

• Filing date: Jan 28, 1999
• Grant date: Apr 17, 2001
• Expiry date: Jan 28, 2019

Classification

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

Abstract

The present invention relates to a process to prepare an olefin using a transition metal compound of the formula I as a catalyst component ##STR1## PA1 where M.sup.1 is a metal of group IIIb, IVb or Vb of the Periodic Table of the Elements, PA1 R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and are each a hydrogen atom or a substituent, PA1 R.sup.5 are identical or different and are a substituent, PA1 Y are identical or different and are each a hydrogen atom, a C.sub.1 -C.sub.40 -hydrocarbon-containing group, an OH group, a halogen atom or an NR.sup.5.sub.2 group, where R.sup.5 are identical or different and are each a halogen atom, a C.sub.1 -C.sub.10 -alkyl group or a C.sub.6 -C.sub.10 -aryl group, PA1 k is an integer which corresponds to the valence of the transition metal atom M.sup.1 minus two and if Y is a butadiene unit, k is 1, PA1 A is a bridge. PA1 R.sup.8 is a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.40 -group, an --SiR.sup.5.sub.3, --NR.sup.5.sub.2, --Si(OR.sup.5).sub.3, --Si(SR.sup.5.sub.3 or --PR.sup.5.sub.2 radical, where R.sup.5 are identical or different and are each a halogen atom, a C.sub.1 -C.sub.10 -alkyl group or a C.sup.6 -C.sub.10 -a…