1
Kueber Frank Dr, Bachmann Bernd Dr, Spaleck Walter Dr, Winter Andreas Dr, Rohrmann Juergen Dr: Metallocenes with arylsubstituted indenyl-derivatives as ligands, process for their preparation and their use as catalysts.. Hoechst, January 5, 1994: EP0576970-A1 (143 worldwide citation)

A very active catalyst system for the polymerisation or copolymerisation of olefins consists of a co-catalyst, preferably an aluminoxane or a supported aluminoxane, and a metallocene of the formula I in which, in the preferred form, M denotes Zr or Hf, R and R denote halogen or alkyl, R denotes alky ...


2
Winter Andreas Dr, Antberg Martin Dr, Spaleck Walter Dr, Rohrmann Juergen Dr, Dolle Volker Dr: 2-substituted bisindenyl-metallocenes, process for their preparation and their use as catalysts for the polymerization of olefins.. Hoechst, May 20, 1992: EP0485823-A1 (142 worldwide citation)

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 c ...


3
Winter Andreas Dr, Spaleck Walter Dr: Process for preparing 1-olefinpolymers.. Hoechst, February 8, 1989: EP0302424-A1 (108 worldwide citation)

In Ziegler catalysts based on a metallocene as the transition-metal component and on an aluminoxane as activator, preactivation of the metallocene by means of the aluminoxane results in a significant increase in the activity of the catalyst system. Furthermore, use of a catalyst system of this type ...


4
Brekner Michael Joachim Dr, Rohrmann Juergen Dr, Spaleck Walter Dr, Antberg Martin Dr: Process for preparing cycloolefin polymers.. Hoechst, January 16, 1991: EP0407870-A2 (105 worldwide citation)

Polymerisate von polycyclischen Olefinen der Formeln I bis IV mit einer Viskositätszahl grösser 20 cm /g und einer Glastemperatur oberhalb 100 DEG C erhält man ohne Ringöffnung mit einer hohen Polymerisationsgeschwindigkeit bei technisch günstigen Polymerisationstemperaturen mittels eines Katalysato ...


5
Winter Andreas Dr, Antberg Martin Dr, Spaleck Walter Dr, Rohrmann Juergen Dr, Dolle Volker Dr: Process for preparing high molecular weight polyolefines.. Hoechst, May 20, 1992: EP0485822-A2 (79 worldwide citation)

A very effective catalyst system for olefin polymerisation consists of an aluminoxane and of a metallocene of the formula I in which, preferably, 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 members i ...


6
Herrmann Hans Friedrich Dr, Bachmann Bernd Dr, Spaleck Walter Dr: Olefin polymerization catalyst, process for its preparation, and its use.. Hoechst, January 19, 1994: EP0578838-A1 (60 worldwide citation)

A supported polymerization catalyst which is applicable in all polymerization processes is comprised of the reaction product of (A) a supported organoaluminum compound and (B) a metallocene catalyst component.


7
Winter Andreas Dr, Kueber Frank Dr, Spaleck Walter Dr, Riepl Herbert, Herrmann Wolfgang Anton Prof D, Dolle Volker Dr, Rohrmann Juergen Dr: Process for the preparation of polymers using metallocenes with specifically substituted indenyl ligands.. Hoechst, February 9, 1994: EP0582194-A1 (53 worldwide citation)

A highly effective catalyst system for the polymerisation of olefins is composed of a co-catalyst, preferably an aluminoxane, and a metallocene of the formula I, in which M is preferably Zr or Hf, R and R are preferably alkyl or halogen, R is preferably hydrogen or alkyl, R and R are preferably alky ...


8
Winter Andreas Dr, Antberg Martin Dr, Dolle Volker Dr, Rohrmann Juergen Dr, Spaleck Walter Dr: Process for preparing an olefinpolymer by using metallocenes having specially substituted indenylligands.. Hoechst, April 21, 1993: EP0537686-A1 (44 worldwide citation)

A highly effective catalyst system for the polymerisation of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I or Ia. in which, preferably M is Zr or Hf, R and R are alkyl or halogen, R and R are hydrogen or alkyl, R and R are alkyl, -(CRR)m-R-(CRR)n- is a ...


9
Spaleck Walter Dr, Rohrmann Juergen Dr, Antberg Martin Dr: Process for the manufacture of olefinic polymers.. Hoechst, March 10, 1993: EP0530647-A1 (42 worldwide citation)

A highly effective catalyst system for the polymerisation of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula (I) in which, preferably, M is Zr, R and R are an alkyl or halogen, R to R are alkyl, -(CRR)m-R-(CRR)n- is a single- or multi-membered chain in whi ...


10
Winter Andreas Dr, Antberg Martin Dr, Spaleck Walter Dr, Rohrmann Juergen Dr, Dolle Volker Dr: Metallocenes with 2-substituted indenyl-derivates as ligands, process for their preparation and their use as catalysts.. Hoechst, May 20, 1992: EP0485821-A1 (42 worldwide citation)

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 c ...