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Inventor:
Ivchenko; Pavel V.
Address:
Moscow, RU
No. of patents:
14
Patents:












Patent Number Title Of Patent Date Issued
8158733 Catalysts based on 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligands April 17, 2012
Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 metal complex that incorporates a dianionic, tridentate 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligand. In one aspect, supported catalysts are prepared by first
8153544 Method for preparing non-metallocene catalysts April 10, 2012
A method of preparing supported catalysts useful for olefin polymerization is described. The catalysts comprise a Group 4 metal complex that incorporates a tridentate dianionic ligand. An activator mixture is first made from a boron compound having Lewis acidity and an excess of an a
7858718 Catalysts based on 2-aryl-8-anilinoquinoline ligands December 28, 2010
Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 metal complex that incorporates a dianionic, tridentate 2-aryl-8-anilinoquinoline ligand. In one aspect, supported catalysts are prepared by first combining a boron compound hav
7858717 Metallocene compounds December 28, 2010
A bridged metallocene compound of formula (I) ##STR00001## wherein: M is an atom of a transition metal selected from those belonging to group 3, 4, or to the lanthanide or actinide groups in the Periodic Table of the Elements; X, equal to or different from each other, is a hydrogen
7834205 Metallocene compounds November 16, 2010
A bridged metallocene compound of formula (I) ##STR00001## wherein: M is a transition metal; X, is a hydrogen atom, a halogen atom, or a hydrocarbon group optionally containing heteroatoms; L is a divalent bridging group; R.sup.1 is a linear C.sub.1-C.sub.40 hydrocarbon radical opti
7579417 Metallocene compounds August 25, 2009
A metallocene compound of formula (I) wherein: M is an atom of a transition metal; X, same or different, is a hydrogen atom, a halogen atom, or a R, OR, OSO.sub.2CF.sub.3, OCOR, SR, NR.sub.2 or PR.sub.2 group, wherein R is C.sub.1-C.sub.40 hydrocarbon group; L is a divalent bridging
7452949 Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and November 18, 2008
The present invention relates to organometallic transition metal compounds of the formula (I) ##STR00001##
7253292 Synthesis of cyclopentadiene derivatives August 7, 2007
A process for preparing cyclopentadiene derivatives comprising the steps of: a) coupling a five membered heterocycle ring with a five or six membered heterocycle ring; b) reacting the obtained compound with a carbonilating system: c) reducing the obtained compound.
6730754 Process for producing substantially amorphous propylene-based polymers May 4, 2004
A process for producing substantially amorphous propylene (co)polymers, comprising contacting propylene optionally in the presence of one or more olefins under polymerization conditions with a catalyst system comprising: A) a half sandwich titanium complex wherein the cyclopentadienyl is
6518386 Metallocene compounds, process for their preparation thereof, and their use in catalysts for the February 11, 2003
A class of metallocene compounds having two cyclopentadienyl rings bridged by an alkylidene group is disclosed. These metallocene compounds can be suitably used as catalyst components for the polymerization of olefins. In particular, by polymerising propylene in the presence of a catalys
6388118 Process for the preparation of cyclopentadienyl compounds and compounds obtained therefrom May 14, 2002
A process is disclosed for preparing bis-cyclopentadienyl compounds bridged by a single carbon atom by reacting a carbonyl compound with a cyclopentadienyl compound in the presence of a base and of an oxygen-containing solvent having an atomic ratio carbon/oxygen not higher than 3. T
6051728 Metallocene compounds, process for their preparation, and their use in catalysts for the polymer April 18, 2000
A class of metallocene compounds having two substituted cyclopentadienyl rings bridged by an alkylidene group wherein the cyclopentadienyl groups can be indenyl groups. The metallocene compounds have the following structures: ##STR1## The metallocenes are characterized by three p
6043403 Process for the preparation of cyclopentadienyl compounds and compounds obtained therefrom March 28, 2000
A process is disclosed for preparing bis-cyclopentadienyl compounds bridged by a single carbon atom by reacting a carbonyl compound with a cyclopentadienyl compound in the presence of a base and of an oxygen-containing solvent having an atomic ratio carbon/oxygen not higher than 3. T
5968863 Process for the preparation of bridged metallocenes October 19, 1999
It is possible to prepare in high yield and purity the racemic and meso forms of bridged chiral metallocenes with a stereoselective method, by synthesizing the sylil-, germyl- or stannyl-substituted ligands. These compounds can be prepared in their racemic and meso forms, and then se










 
 
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