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Ernst Eberhard Dr, Reussner Jens Dr, Neissl Wolfgang Dipl Ing Dr: Catalyst system and process for the polymerization of olefins. Danubia Petrochem Polymere, February 7, 1996: EP0695765-A1 (40 worldwide citation)

A novel olefin polymerisation catalyst comprises: (A) a sub-Gp. III, IV, V or VI metallocene; (B) aluminoxane; (C) a Gp. II, III or IV metal oxide; and (D) an organometallic cpd. of formula (I). Claimed prepn. is by mixing (A) and (B) and then mixing the prod. with a (C)/(D) reaction prod. MR1R2R3R4 ...


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Ernst Eberhard Dr, Reussner Jens Dr, Neissl Wolfgang Dipl Ing Dr: Catalyst carrier, supported metallocene catalysts and their use in the preparation of polyolefins.. Danubia Petrochem Polymere, December 6, 1995: EP0685494-A1 (22 worldwide citation)

The prodn. of a catalyst support (I) comprises: (a) drying hydrophilic, macroporous, disperse Al2O3, SiO2, titanium oxide or zirconium oxide, or mixts. or mixed oxides thereof (II), at 110-800 degrees C; (b) reacting with an aluminoxane (III); and then (c) reacting with polyfunctional organic crossl ...


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Gahleitner Markus Dipl Ing Dr, Bernbreitner Klaus Dipl Ing, Hafner Norbert Dipl Ing, Neissl Wolfgang Dipl Ing Dr: Blends of elastomeric polypropylene and non-olefinic thermoplasts.. Danubia Petrochem Polymere, March 1, 1995: EP0640650-A1 (21 worldwide citation)

Blends of preferably modified elastomeric polypropylene, nonolefinic thermoplastics, such as polyamides (nylon), polystyrene, polycarbamates or polyesters, and preferably a compatibiliser, which is preferably graft-modified elastomeric polypropylene.


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Bildstein Benno Dr, Denifl Peter Mag, Fleischanderl Robert, Ernst Eberhard Dr, Neissl Wolfgang Dipl Ing Dr: Process for the preparation of silicon-bridged asymmetric cyclopentadienyl-, indenyl- and fluorenyl-containing ligand systems. Danubia Petrochem Polymere, January 24, 1996: EP0693497-A2 (5 worldwide citation)

The prodn. of unsymmetrical Si-bridged cyclopentadienyl, indenyl or fluorenyl ligand systems (I) comprises: (a) reacting cpds. of formula (VII) with opt. substd. cyclopentadienides, indenides or fluorenides. X = halo; R, R = 1-20C alkyl or fluoroalkyl, 6-14C aryl, 7-20C aralkyl or alkaryl, 6-10C hal ...


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Schottenberger Herwig Mag Dr, Reussner Jens Dr, Buchmeiser Michael Mag Dr, Neissl Wolfgang Dipl Ing Dr, Elsner Olaf Mag, Angleitner Herbert Mag, Ernst Eberhard Dr: Metallocenes and their use in polymerization of olefins.. Danubia Petrochem Polymere, September 27, 1995: EP0673946-A2 (2 worldwide citation)

Metallocenes of formula (I) are new: M = Ti, Zr, Hf, V, Nb, Ta or a lanthanide; X1, X2 = 1-10C alkyl or alkoxy, 6-10C aryl or aryloxy, 2-10C alkenyl, 7-20C arallyl or alkaryl, 8-20C aralkenyl, H or halo; L1, L2 = (a) opt. mono- or poly-substd. mono- or poly-nuclear hydrocarbon residue with at least ...


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Luciani Luciano Dr, Neissl Wolfgang Dipl Ing Dr, Hafner Norbert Dipl Ing Dr: Carrier for olefin polymerization catalysts. Danubia Petrochem Polymere, August 19, 1998: EP0859014-A1 (2 worldwide citation)

Procedure for the preparation of a solid carrier for olefin polymerization catalysts, comprising the steps: a) impregnating a silica with a solution of Mg-chloride in the presence of electron donors, b) drying the impregnated silica obtained in (a) and impregnating it with a solution of Mg-alkyls in ...


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Luciani Luciano Dr, Neissl Wolfgang Dipl Ing Dr, Hafner Norbert Dipl Ing Dr: Carrier for olefin polymerization catalysts. Danubia Petrochem Polymere, August 19, 1998: EP0859013-A1

Procedure for the preparation of a solid carrier for olefin polymerization catalysts, comprising the steps: a) impregnating a silica with Mg-chloride solubilized in ethylbenzoate, in the presence of further electron donrs, b) optionally drying the impregnated silica obtained in (a) and impregnating ...