Basell Polyolefine Gmbh

Celanese Ventures Gmbh

Ticona Gmbh

Basell Polypropylen Gmbh

Jörg Schottek

Jörg Ludwig Schulte

David Fischer

Roland Kratzer

Markus Oberhoff

Tim Dickner

Andreas Winter

Yoshikuni Okumura

Volker Fraaije

Wolfgang Bidell

Carsten Bingel

Gerhard Erker

Ralph-Dieter Maier

Jürgen Suhm

Cornelia Fritze

Jens Ehlers

Heike Gregorius

Horst Weiss

Horst Weiβ

Nicola Stefanie Paczkowski

Nicola Stephanie Paczkowski

Jens Panitzky

Patricia Becker

Gerald Kehr

Lothar Fisch

Iris Küllmer

Klaus Kunz

Steve Döring

Iris Kuellmer

Jörg Schulte

The present invention relates to a process of manufacturing high, very high, and ultra high molecular weight polymers comprising predominantly ethylene monomers. Ethylene is reacted in the presence of a catalyst system to produce a polymer having a viscosimetrically-determined molecular weight of at least 0.7&#xd7;10g/mol. The catalyst system generally includes a bridged metallocene catalyst compound, optionally with a co-catalyst. The catalyst is characterized by a zirconium dichloride central functionality and a dimethyl silandiyl bridge between five-membered rings of indenyl groups. Both rings of the metallocene compound are substituted at the 2-position with respect to the dimethyl silandiyl bridge with a C-Ccarbonaceous group.

Process for manufacturing high to ultra high molecular weight polymers using novel bridged metallocene catalysts

A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.

Transition metal compound, ligand system, catalyst system and its use for the polymerization and copolymerization of olefins

The present invention relates to compounds of the formula (I): where

Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and process for preparing polyolefins

Transition metal compound, ligand system, catalyst system and the use of the latter for polymerisation and copolymerisation of olefins

A process for separating inorganic and organometallic by-products from a mixture comprising at least one organometallic transition metal compound as product and at least one organometallic by-product and at least one inorganic by-product as by-products comprises the steps

Reduction of concentration of inorganic by-products and organometallic by-products in the preparation of metallocenes and economical recovery of the starting materials used

The present invention relates to a simple process for preparing specifically substituted indenes of the formula (I) or (Ia) to compounds of the formula (II) serving as starting materials and to the use of the compounds of the formula (II) as starting materials for the synthesis of substituted indenes.

Preparation of substituted indenes

The invention relates to a method for producing special transition metal compounds, to novel transition metal compounds and to the use thereof for polymerizing olefins.

Covalently fixed nonmetallocenes, process for preparing them and their use for the polymerization of olefins

The present invention describes a novel group of specific transition metal compounds, referred to as nonmetallocene compounds, and catalyst systems prepared therefrom. These catalyst systems which have become obtainable for the first time are suitable for the polymerization of olefins.

Non-metallocene catalyst system

Organometallic transition metal compounds of the formula (I) where Mis an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements or the lanthanides; X are identical or different and are each halogen, hydrogen, C&#x2013;C-alkyl, C&#x2013;C-alkenyl, C&#x2013;C-aryl, alkylaryl or arylalkyl having from 1 to 10 carbon atoms in the alkyl part and from 6 to 22 carbon atoms in the aryl part, &#x2014;ORor &#x2014;NRR, where two radicals X may also be joined to one another or two radicals X may together form a substituted or unsubstituted diene ligand, in particular a 1,3-diene ligand; where Rand Rare each C&#x2013;C-alkyl, C&#x2013;C-aryl, alkylaryl, arylalkyl, fluoroalkyl or fluoroaryl each having from 1 to 10 carbon atoms in the alkyl radical and from 6 to 22 carbon atoms in the aryl radical; n is a natural number from 1 to 4 which is equal to the oxidation number of Mminus 2; Ris a C&#x2013;Cradical which is branched in the &#x3b1; position; Ris hydrogen or a C&#x2013;Cradical which may be branched or unbranched in the &#x3b1; position; R, Rand Rare identical or different and are each hydrogen or a C&#x2013;Cradical, where at least one of the radicals R, R, Ris not hydrogen; Ris a substituted or unsubstituted C&#x2013;C-aryl radical or C&#x2013;C-heteroaromatic radical containing at least one heteroatom selected from the group consisting of O, N, S and P; T is a divalent C&#x2013;Cgroup which together with the cyclopentadienyl ring forms a further saturated or unsaturated ring system having a ring size of from 5 to 12 atoms, where T may contain the heteroatoms Si, Ge, N, P, O or S withing the ring system fused onto the cyclopentadienyl ring; and Z is a bridge consisting of a divalent atom or a divalent group, can be used in catalyst systems for preparing polyolefins by polymerization or copolymerization of at least one olefin. Biscyclopentadienyl ligand systems which have such a substitution pattern and can be used for preparing these organometallic transition metal compounds are also provided 

Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and preparation of polyolefins

The invention relates to a method for producing special transition metal compounds, to novel transition metal compounds and to their use for the polymerization of olefins.

Method for producing transition metal compounds and their use for the polymerization of olefins

The invention relates to a chemical compound of formula (I), wherein Mrepresents an element selected from main groups II, III or IV of the periodic table of elements; x is equal to 1, 2, 3 or 4; y is equal to 2, 3 or 4, and; A represents a cation of main group V of the periodic table of elements; Ris the same or different and represents a branched or unbranched linear or cyclic C&#x2013;Cgroup that contains carbon; Ris the same or different and represents a branched or unbranched linear or cyclic C&#x2013;Cgroup that contains carbon; Rrepresents a branched or unbranched linear or cyclic C&#x2013;Cgroup that contains carbon, and; Rrepresents a hydrogen atom; whereby Rand Rare always different from one another 

Chemical compound, method for the production thereof and its use in catalyst systems for producing polyolefins

The present invention relates to a process for preparing specific transition metal compounds, novel transition metal compounds and also catalyst systems and their use for the homo- or copolymerization of olefins.

'Constrained geometry' metallocenes, method for the production thereof and use of the same for the polymerisation of olefins

The invention relates to chemical products which are suited for use as co-catalysts and which can be obtained by reacting a compound of formula (I), MRR(R)with a compound of formula (II), (RX)-(G)*(MRR). In formula (I), R, Rand Rare the same or different and represent a hydrogen atom, C&#x2013;Calkyl, C&#x2013;Calkyl halide, C&#x2013;Caryl, C&#x2013;Caryl halide, C&#x2013;Carylalkyl, C&#x2013;Carylalkyl halide, C&#x2013;Calkylaryl or C&#x2013;Calkylaryl halide; Mrepresents an element of the second or third main group of the periodic table of elements, and; m equals 0 or 1, whereby m is equal to 1 when Mrepresents an element of the third main group, and m is equal to 0 when Mrepresents an element of the second main group. In formula (II), substituents RX, which contain hetero atoms, is located on a base body G, and: groups Rare the same or different and represent hydrogen, C&#x2013;Calkyl, C&#x2013;Calkyl halide, C&#x2013;Caryl, C&#x2013;Caryl halide, C&#x2013;Carylalkyl, C&#x2013;Carylalkyl halide, C&#x2013;Cakylaryl or C&#x2013;Calkylaryl halide; X represents an element of the fourth, fifth or sixth main group of the periodic table of elements; G represents at least bivalent C&#x2013;Calkylene, C&#x2013;Calkylene halide, C&#x2013;Calkylenoxy, C&#x2013;Carylene, C&#x2013;Carylene halide, C&#x2013;Carylenoxy, C&#x2013;Carylalkylene, C&#x2013;Carylalkylene halide, C&#x2013;Calkylarylene, C&#x2013;Calkylarylene halide; Mrepresents an element of the fourth, fifth or sixth main group of the periodic table of elements; Rand R, independent of one another, are the same or different and represent a hydrogen atom, C&#x2013;Calkyl, C&#x2013;Calkoxy, C&#x2013;Calkenyl, C&#x2013;Carylalkyl, C&#x2013;Calkylaryl, C&#x2013;Caryloxy, C&#x2013;Calkyl halide; q is a whole number ranging from 2 to 100, and; g is a whole number ranging from 1 to 100. The invention also relates to a method for preparing the inventive chemical products, and to their use in catalyst systems for producing polyolefins.

Chemical products suited for use as co-catalysts, method for the preparation thereof and their use in catalyst systems for producing polyolefins

A catalyst system comprising at least one metallocene, at least one cocatalyst, at least one support material and, if desired, further organometallic compounds is described. The catalyst system can advantageously be used for the polymerization of olefins and displays a high catalyst activity and gives a good polymer morphology without it being necessary to use aluminoxanes such as methylaluminoxane (MAO), which usually has to be used in high excess, as cocatalyst.

Catalyst system and the use thereof

A catalyst system comprising a metallocene, a cocatalyst, a support material and optionally a further organometallic compound is described. The catalyst system can advantageously be used for the polymerization of olefins. Here, the use of aluminoxanes such as methylaluminoxane (MAO) as cocatalyst is dispensed with and a high catalyst activity and good polymer morphology are nevertheless achieved.

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Frankfurt-am-Main, Germany

Jörg Schottek