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6815390 |
Supported fluorous biphasic catalyst system
The present invention relates to a new catalyst system for fluorous biphasic catalysis processes which comprises functionalized polymeric beads, monodisperse SiO 2 or SiO 2 flakes associated with...
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6812183 |
Triple-decker catalysts based on delocalized dianionic ligands
Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a triple-decker bimetallic complex. The complex includes two Group 3-10 transition metals and a...
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6812182 |
Compositions formed from hydroxyaluminoxane and their use as catalyst components
Surprisingly stable olefin polymerization co-catalysts formed from hydroxyaluminoxanes are revealed. In one embodiment of the invention, a solid composition of matter is formed from a...
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6809209 |
Nitrogen-containing group-13 anionic compounds for olefin polymerization
The invention addresses an composition of matter comprising a cation [Ct] + and an anion [A] − , the anion comprises a core Group-13 element bound to partially or completely fluorinated...
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6809057 |
Chromium compounds and olefin polymerization processes utilizing them
An olefin polymerization catalyst system, comprising a catalyst represented by the general formula CrR 4 , wherein each R is independently a hydrocarbyl or substituted hydrocarbyl, with the proviso...
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6809056 |
Process for preparing polyolefin polymerization catalysts
The present invention relates to a process for manufacturing polyolefin polymerization catalysts and provides a process for manufacturing polyolefin polymerization catalysts, wherein after...
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6806328 |
Polymerization catalyst activator complexes and their use in a polymerization process
The present invention includes polymerization catalyst activator complexes which include at least Group 13 metals. The activator complexes of the invention are prepared, in general, by reacting a...
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6806326 |
Constrained geometry addition polymerization catalysts
Metal complexes having constrained geometry and a process for preparation thereof, addition polymerization catalysts formed therefrom, processes for preparation of such addition polymerization...
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6806221 |
Method for preparing a spray-dried composition for use as a polymerization catalyst
A method of making a spray-dried composition using a solution or mixture comprising the reaction product of a magnesium halide, a solvent, an electron donor compound, and a transition metal...
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6806327 |
Substituted polycyclic, fused ring compounds, metal complexes and polymerization process
Metal complexes comprising a polycyclic, fused ring ligand or inertly substituted derivative thereof comprising at least: (1) a cyclopentadienyl ring, (2) a 7 membered polyatomic ring, and (3) one...
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6806220 |
High activity carbenium-activated polymerization catalysts
This application discloses triphenyl carbenium NCA's as catalyst activators for a class of asymmetrically bridged hafnocene catalyst precursors. These catalyst precursors are activated into olefin...
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6803427 |
Method for producing ethylene homo- and co-polymer
The present invention relates to a method for producing a polymer and copolymer of ethylene, and more particularly to a method for producing an ethylene polymer and copolymer by reacting a compound...
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6803428 |
Process for preparing a catalyst support for polymerization of α-olefins, and support thus obtained
A process is provided for preparing a catalyst support for polymerizing α-olefins comprising the steps of: (i) reacting, in the presence of a first electron donor, a chlorine-containing organic...
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6803338 |
Catalyst for homo- or co-polymerization of ethylene
The present invention relates to a catalyst for homo- or co-polymerization of ethylene, or more particularly to a solid titanium catalyst supported on a magnesium-containing carrier, having high...
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6803431 |
Method for the polymerization of olefins
The polymerization of olefins is carried out in the presence of catalysts comprising at least one complex of a transition metal with a tridentate macrocyclic ligand which additionally bears at...
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6800701 |
Polycyclic, fused ring compounds, metal complexes and polymerization process
Compounds and metal complexes comprising a polycyclic, fused ring ligand or inertly substituted derivative thereof having up to 60 atoms other than hydrogen, said ligand comprising at least: (1) a...
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6800581 |
Catalyst composition for polymerization of olefins and process using the composition
The present invention relates to a catalyst composition for homopolymerization or copolymerization of olefins comprising: (a) a solid catalyst precursor comprising a transition metal compound of...
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6799568 |
Process for the preparation of a catalyst component for the polymerization of an olefin
The invention is directed to a process for the preparation of a catalyst component for the polymerization of an olefin by: a) contacting metallic magnesium with an organic halide RX, where R is an...
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6800580 |
Method for producing an improved catalyst for homo-and co-polymerization of olefin
The present invention relates to a solid complex titanium catalyst for homo-polymerization and co-polymerization of α-olefin, obtained by (i) producing a solution of a magnesium compound by...
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6797794 |
Olefins produced from pre-polymerized catalyst component catalysts
Olefin polymers produced using components of catalysts obtained by contacting a Ti compound of formula Ti(OR) n-y X y , where n is the valence of titanium and y is a number between 1 and n, with a...
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6790804 |
Magnesium-diketonate complex derived polyolefin catalysts, method of making same, method of polymerizing with same
A process of forming a polyolefin catalyst component includes contacting a metal compound of the formula MR 2 with a diketone to form a metal bis(diketonate) having the formula M(OCRCR′CRO) 2 ,...
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6790918 |
Transition metal catalysts containing bidentate ligands and method of using and preparing same
Disclosed is a novel bidentate pyridine transition metal catalyst having the general formula each R is independently selected from hydrogen or C 1 to C 6 alkyl, or C 6 to C 14 aryl, each...
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6787499 |
Catalyst for the production of α-olefin and α-olefin production method
A catalyst which is able to express a high oligomerizing activity of ethylene and a method for the production of α-olefin where ethylene is oligomerized using said catalyst are provided. The...
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6787677 |
Hydrogenation of carbonyl compounds
In a process for the catalytic hydrogenation of a carbonyl compound or a mixture of two or more carbonyl compounds in the presence of catalyst tablets which comprise an inorganic, TiO 2 -containing...
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6787199 |
Composite device and manufacturing method therefor
This invention provides a composite device whereby surface reflection and interference colors can be inhibited, photocatalytic decomposition performance may be improved and hydrophilicity-acquiring...
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6784305 |
Method for producing alkyl-bridged ligand systems and transition metal compounds
Highly substituted alkyl-bridged ligand systems based of indene derivatives and transition metal compounds can be obtained in high yields by a novel process.
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6784261 |
Imidochromium compounds contained in catalyst systems for olefin polymerization
The present invention relates to catalyst system containing at least one imidochrome compound and at least one activation compound. This invention also relates to imidochrome compounds, to a method...
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6780807 |
Acyclic anionic six-electron-donor ancillary ligands
The present invention provides an improved acyclic anionic six-electron-donor ancillary ligand suitable for being bonded in a transition metal complex. The present invention also provides a...
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6780808 |
Enhanced solubility of magnesium halides and catalysts and polymerization process using same
A magnesium halide composition comprising and/or made from a magnesium halide, a solvent suitable for an electron donor compound and an electron donor compound. The composition is characterized by...
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6780947 |
Metal complexes comprising a 2,6-diacylpyridine-ligand and their use in the polymerization of ethylene
Organometallic complex having the formula (IAP)M(X) n which can be used for die formation of catalytic systems wherein: M is a metal selected from transition metals and lanthanides, in oxidation...
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6777508 |
Catalysts for the polymerization of olefins
Disclosed are catalysts for the polymerization of alpha-olefins which comprise the reaction product of: (a) an Al-alkyl compound; (b) a silicon compound containing at least one Si—OR or...
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6774253 |
Process for the preparation of titanium complexes
A new process is disclosed, particularly simple, convenient and practical, for the direct synthesis of titanium complexes of the formula (I): (D)(ZR 1 m ) n (A)TiL p X q , wherein (ZR 1 m ) n is a...
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6774078 |
Olefin polymerization catalysts based on annulated cyclopentadienyl ligands
A catalyst system useful for polymerizing olefins is disclosed. The catalyst system includes an organometallic complex that incorporates a Group 3 to 10 transition metal and an annulated...
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6770772 |
Transition metal compound, polymerization catalysts for olefin, olefin polymers and process for their production
The present invention relates to a transition metal compound represented by the general formula (I), and a olefin polymerization catalyst comprising above transition metal compound and activating...
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6770718 |
Continuous process for the preparation of solid catalyst components for the polymerization of α-olefins
A process is provided for the preparation of a solid catalyst component for the polymerization of olefins, comprising continuously feeding a liquid containing a titanium compound having at least...
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6767856 |
Transition metal olefin polymerization catalyst having cyclopropenyl derived ligands
This invention is directed to cationic polymerization of olefins using catalysts comprising a Group 6 or 10 neutral transition metal cation composition having a cyclopropenyl ring, a pi-bonded...
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6765103 |
Process for the hydrogenation of unsaturated transition metal compounds
The invention relates to a process for preparing transition metal compounds having hydrogenated or partially hydrogenated monocyclic, bicyclic or polycyclic ligands, which is characterized in that...
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6762145 |
Method of making a catalyst for polymerization and co-polymerization of ethylene
The present invention relates to a catalyst for polymerization and co-polymerization of ethylene. More particularly, the present invention relates to a solid titanium catalyst containing magnesium,...
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6762258 |
Metal complexes as catalyst component for olefin polymerization
Novel nitrogen containing transition metal complexes have general formula (I): wherein M is Fe[II], Fe[III], Ni[II], Co[I], Co[II], Co[III], V[III], Mn[I], Mn[II], Mn[III], Mn[IV], Ru[II], Ru[III]...
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6762255 |
Prealkylated olefin polymerization catalysts and olefin polymerization employing such catalysts
Prealkylation of a supported catalyst system comprising a transition metal or inner transition metal complex precatalyst and a bulky, non-coordinating anion on an inorganic support by treatment...
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6756505 |
Metallocene complexes
In metallocene complexes of a metal of transition group IV, V or VI of the Periodic Table, at least one substituted or unsubstituted cyclopentadienyl radical is bound to an element of group III of...
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6756195 |
Polymerization method from the combinatorial synthesis and analysis of organometallic compounds and catalysts
The present invention relates, inter alia, to methodologies for the synthesis, screening and characterization of organometallic compounds and catalysts (e.g., homogeneous catalysts). The methods of...
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6753436 |
Olefin polymerization catalysts
The invention concerns olefin polymerization catalyst component comprising an organometallic compound of general formula I wherein: M is a transition metal of groups 3, 4-10, lanthanide or...
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6750345 |
Substituted pyridyl amine catalysts, complexes and compositions
New ligands, compositions, metal-ligand complexes and arrays with pyridyl-amine ligands are disclosed that catalyze the polymerization of monomers into polymers. Certain of these catalysts with...
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6750170 |
Sweet MAO
Single site catalysts which contain a transition metal, a cyclopentadienyl may be activated with alumoxanes in the gas, solution or group-containing ligand, and a phosphinimine ligand slurry phase...
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6747105 |
Bis-Schiff base ligand-containing mono-metallocene olefin polymerization catalyst, its preparation process and application
A catalyst for olefin polymerization having the following structural formula (I): wherein R 1 is selected from the group consisting of hydrogen, C 1 -C 12 alkyl, C 1 -C 12 alkoxy, or C 6 -C...
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6746981 |
Particulate group 4 metallocene-aluminoxane catalyst compositions devoid of preformed support, and their preparation and their use
Described are solid olefin polymerization catalysts that have, inter alia, very high productivities (at least 18,000 grams of polyethylene per gram of catalyst in one hour) as shown by a standard...
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6743932 |
Polymerization catalyst
An organometallic compound of the formula I where M 1 is selected from among Fe, Ru and Os and M 2 is selected from among the transition metals of groups IV to VI of the Periodic Table, which...
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6740617 |
One pot preparation of bimetallic catalysts for ethylene 1-olefin copolymerization
A process of forming a bimetallic catalyst composition comprising a cocatalyst (a trialkylaluminum compound) and a catalyst precursor. The precursor comprises at least two transition metals; a...
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6734131 |
Heterogeneous chromium catalysts and processes of polymerization of olefins using same
A chromium containing catalyst wherein the chromium atom is in one of its higher valence states and is immobilized to a support-agglomerate composed of at least one inorganic oxide component and at...
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