1
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 ...


2
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 ...


3
Rohrmann Juergen Dr, Dolle Volker Dr, Winter Andreas Dr, Kueber Frank Dr: Metallocenes containing benzocondensed indenyl derivatives as ligands, process for their preparation and their use as catalysts.. Hoechst, July 7, 1993: EP0549900-A1 (62 worldwide citation)

A very active catalyst system for olefin polymerization consists of a co-catalyst, preferably an aluminoxane, and a metallocene of the formula I in which preferably M denotes Zr or Hf, R and R denote halogen or alkyl, R denotes alkyl, R to R denote alkyl or hydrogen and R denotes a (subst.) alkylene ...


4
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 ...


5
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 ...


6
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 ...


7
Winter Andreas Dr, Antberg Martin Dr, Spaleck Walter Dr, Rohrmann Juergen Dr, Dolle Volker Dr: Process for preparing olefin polymers.. Hoechst, May 20, 1992: EP0485820-A2 (38 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 ...


8
Winter Andreas Dr, Dolle Volker Dr, Rohrmann Jurgen Dr, Spaleck Walter Dr: Process for preparing an alpha-olefin polymer.. Hoechst, October 11, 1989: EP0336128-A2 (36 worldwide citation)

A highly effective catalyst system for the polymerisation of 1-olefins comprises an aluminoxane and a metallocene which is a compound of the formula I in which R and R are hydrogen atoms, halogen atoms or hydrocarbon radicals, and R and R are monocyclic or polycyclic hydrocarbon radicals which can f ...


9
Winter Andreas Dr, Antberg Martin Dr, Bachmann Bernd Dr, Dolle Volker Dr, Kueber Frank Dr, Rohrmann Juergen Dr, Spaleck Walter Dr: Process for preparing polyolefins.. Hoechst, March 2, 1994: EP0584609-A2 (36 worldwide citation)

A process for preparing an olefin polymer by polymerisation or copolymerisation of an olefin of the formula R-CH=CH-R, in which R and R are identical or different and are a hydrogen atom or a hydrocarbon radical having 1 to 14 carbon atoms, or R and R, together with the atoms connecting them, can fo ...


10
Winter Andreas Dr, Rohrmann Juergen Dr, Antberg Martin Dr, Dolle Volker Dr, Spaleck Walter Dr: Process for preparing a syndiotactic polyolefin.. Hoechst, September 19, 1990: EP0387691-A1 (29 worldwide citation)

Durch Polymerisation oder Copolymerisation eines Olefins der Formel R-CH=CH-R in Gegenwart eines Katalysators bestehend aus einem Metallocen der Formel I und einem Aluminoxan erhält man ein syndiotaktisches Polyolefin in hoher Ausbeute. Dieses Polyolefin weist eine sehr hohe Syndiotaxie auf. Bei nie ...