Patent · US Expired

Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation and their use as catalysts

US5455366A · kind A · utility

76Cited by

3References

9Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Jurgen Rohrmann · Kelkheim, DE
Volker Dolle · Kelkheim, DE
Andreas Winter · Königstein, DE
Frank Kuber · Oberursel, DE

Key dates

Filing date	Jan 17, 1995
Grant date	Oct 3, 1995
Priority date	—
Expiry date	Jan 17, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F4/65927
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation and their use as catalysts A very effective catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in which, preferably, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are halogen or alkyl, R.sup.3 is alkyl, R.sup.4 to R.sup.10 are alkyl or hydrogen and R.sup.11 is a (substituted) alkylene or heteroatom bridge.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.