1
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.


2
Herrmann Hans Friedrich, Boehm Ludwig, Voigt Hartmut, Spaleck Walter, Hohner Gerd: Process for the preparation of polyolefin waxes.. Hoechst, December 1, 1993: EP0571882-A2 (52 worldwide citation)

Polymerisation of olefins in a low-boiling suspension medium, in particular propane, in the presence of a metallocene catalyst gives polyolefin waxes which can be used without further work-up steps.


3
Herrmann Hans Friedrich Dr, Hohner Gerd Dr: Polypropylene wax. Clariant, January 13, 1999: EP0890584-A1 (47 worldwide citation)

Polypropylene homo- or co-polymer wax with a melt viscosity (MV; at 170 degrees C) of less than 100 mPa.s, made by polymerisation with metallocene catalysts in presence of hydrogen. Also claimed is a process for the production of polypropylene wax as above, in which ethylene-bridged stereo-rigid met ...


4
Herrmann Hans Friedrich Dr, Bachmann Bernd Dr, Hierholzer Bernhard Dr, Spaleck Walter Dr: Catalyst for the polymerisation of olefins, process for its preparation and its use.. Hoechst, October 6, 1993: EP0563917-A1 (38 worldwide citation)

The present invention relates to a supported catalyst for the polymerisation of olefins, which can be prepared by reacting the reaction product formed from an aluminoxane and at least one metallocene with a microporous polymeric support.


5
Aulbach Michael Dr, Bachmann Bernd Dr, Erker Gerhard Prof Dr, Psiorz Christian Dipl Chem, Kueber Frank Dr, Osan Frank Dr, Weller Thomas Dr, Herrmann Hans Friedrich Dr: Process for the production of polyolefins.. Hoechst, July 5, 1995: EP0661300-A1 (38 worldwide citation)

The present invention relates to a process for the preparation of a polyolefin by polymerisation of at least one olefin in the presence of a stereorigid metallocene compound containing, as ligands, at least two substituted or unsubstituted cyclopentadienyl groups bonded to one another via a monocycl ...


6
Herrmann Hans Friedrich Dr: Polyolefin wax. Hoechst, July 3, 1996: EP0719802-A2 (25 worldwide citation)

Polypropylene (PP) wax is claimed, with a melt viscosity of 50-100,000 mPa.s at 170 degrees C, a DSC heat of fusion of less than 80 J/g, a DSC m.pt. of above 130 degrees C and a mol wt distribution (Mw/Mn) of less than 3. Also claimed is the prodn. of polyolefin wax with the above properties in the ...


7
Antberg Martin Dr, Herrmann Hans Friedrich Dr, Rohrmann Juergen Dr: (co)Polymers, process for preparation and their use as catalysts.. Hoechst, July 29, 1992: EP0496193-A1 (21 worldwide citation)

An immobile (heterogeneous) metallocene catalyst component which can advantageously be employed for the polymerisation of olefins is obtained by the homopolymerisation of suitably substituted (vinyl group-containing) metallocenes from the 4th sub-group of the Periodic Table or by copolymerisation of ...


8
Hess Reiner Dr, Voigt Hartmut, Herrmann Hans Friedrich Dr, Boehm Ludwig Dr: Process for the préparation of polyolefin waxes.. Hoechst, June 22, 1994: EP0602509-A2 (19 worldwide citation)

Polymerisation of olefins in a low-boiling suspension medium, in particular propane, and dissipation of the heat of reaction by evaporative cooling in the presence of a metallocene catalyst gives polyolefin waxes without wall deposits being able to impair the cooling of the reactor.


9
Herrmann Hans Friedrich Dr, Spaleck Walter Dr: Process for olefin polymerization.. Hoechst, April 5, 1995: EP0646604-A1 (16 worldwide citation)

A process for the preparation of polyolefins by homopolymerisation or copolymerisation of olefins at a temperature of from 100 to 200 DEG C and a pressure of from 0.5 to 100 bar in the presence of a catalyst containing at least one metallocene and at least one cocatalyst, characterised in that the m ...


10
Dolle Volker Dr, Herrmann Hans Friedrich Dr, Winter Andreas Dr, Spaleck Walter Dr: Process for preparing a polyolefin.. Hoechst, April 15, 1992: EP0480390-A2 (15 worldwide citation)

Olefins of the formula R-CH = CH-R (R, R = H or C1-C14-alkyl) are polymerised in the presence of a catalyst comprising a non aromatic solvent-soluble aluminoxane of formula (I) for the linear type and/or of the formula (II) for the cyclic type, where, in the formulae (I) and (II), R is methyl or a C ...