0485823-A1 is referenced by 142 patents and cites 1 patents.

The metallocenes of the formula I according to the invention in which the substituents have the following preferred meanings: M is Zr or Hf, R and R are alkyl or halogen, R and R are hydrogen, R and R are alkyl or haloalkyl, -(CRR)m-R-(CRR)n- is a chain with one or more than one members in which R can also be a (substituted) hetero atom, and m + n is zero or 1, form, together with aluminoxanes as cocatalysts, a highly effective catalyst system for the preparation of polyolefins having a high molecular weight.

Title
2-substituted bisindenyl-metallocenes, process for their preparation and their use as catalysts for the polymerization of olefins.
Application Number
EP19910118682 19911101
Publication Number
0485823 (A1)
Application Date
November 1, 1991
Publication Date
May 20, 1992
Inventor
Dolle Volker Dr
DE
Rohrmann Juergen Dr
DE
Spaleck Walter Dr
DE
Antberg Martin Dr
DE
Winter Andreas Dr
DE
Assignee
Hoechst
DE
IPC
C08F 04/602
C07F 17/00
C08F 110/00
C08F 10/00
C08F 04/00
C07F 17/00
C07F 11/00
C07F 09/00
C07F 07/00
C08F 110/06
C08F 10/00
C08F 04/70
C08F 04/6592
C08F 04/645
C08F 04/642
C08F 04/64
C08F 04/60
C07F 17/00
C07F 11/00
C07F 09/00
C07F 07/08
C07F 07/00
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