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7619106 |
Preparation of partially hydrogenated rac-ansa-metallocene complexes
The invention relates to a process for preparing hydrogenated or partially hydrogenated, racemic ansa-metallocene complexes by reacting bridged or unbridged transition metal complexes with alkali...
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7615660 |
Production process of alkoxy-titanium complex
The present invention provides a process for producing an alkoxy-titanium complex of formula (2) by reacting a titanium halide complex of formula (1) with an alkaline earth metal alkoxide:
...
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7615597 |
Process for the copolymerization of ethylene
A process for producing a polymer of ethylene containing from 0.1 to 99% by mol of one or more derived units of alpha-olefins and optionally from 0 to 5% by mol polyene, comprising contacting...
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7601666 |
Olefin polymerization catalyst system and process for use thereof
A compound represented by the formula:
where:
M is a transition metal selected from group 4 of the periodic table; each R 1 is independently selected from the group consisting of...
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7589160 |
Process for preparing 1-butene polymers
A process for obtaining 1-butene polymers comprising the step of contacting under polymerization conditions 1-butene and optionally ethylene, propylene or said alpha-olefin, in the presence of a...
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7579417 |
Metallocene compounds
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 2 CF 3 , OCOR, SR, NR 2 or PR 2 group,...
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7569713 |
Hydrogenated catalyst
The invention discloses a method for making a hydrogenated metallocene catalyst component comprising the steps of: 1. Providing a compound comprising at least one aromatic group; 2. Hydrogenating...
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7557171 |
Halogen substituted metallocene compounds for olefin polymerization
A metallocene compound comprising a transition metal, a first substituted or unsubstituted indenyl or fluorenyl ligand pi—bonded to the transition metal, a second monoanionic ligand bonded to the...
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7524906 |
Process for the preparation of a metal-organic compound comprising at least one imine ligand
The invention relates to a process for the preparation of a metal-organic compound, comprising at least one imine ligand, characterized in that an imine ligand according to formula 1, or the HA...
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7521572 |
Polymerization catalysts and process for producing bimodal polymers in a single reactor
Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing...
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7470759 |
Isotactic-atactic polypropylene and methods of making same
A method of producing a polymer comprising contacting in a reaction zone under conditions suitable for polymerization of an alpha-olefin monomer with a metallocene catalyst having at least three...
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7468452 |
Process for one-pot synthesis of 1,1-diphenyl-1-(3-substituted-cyclopentadienyl)-1-(2,7-di-t-butyl-fluoren-9-yl)methane type ligands
The present invention is directed to a method of making a ligand which can be used to form an ansa-metallocene. Further, the present invention is directed to a method of making the...
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7468451 |
Process for the production of halide metallocene compounds
Process for preparing halide metallocene compounds comprising the step of reacting the dialkyl derivative with a halogenating agent of formula R 3 x TL w wherein: L is chlorine, iodine or bromine;...
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7465688 |
Process for the isomerization of metallocene compounds
An isomerization process comprising the step of contacting a slurry or a solution comprising the meso or meso-like form of one or more bridged metallocene compounds of group 4 of the Periodic Table...
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7453005 |
Transition metal compound and catalyst for olefin polymerization
A transition metal compound useful as a component of a catalyst for olefin polymerization and a highly active polymerization catalyst capable of producing a high molecular weight olefin polymer....
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7452949 |
Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and preparation of polyolefins
The present invention relates to organometallic transition metal compounds of the formula (I)
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7439379 |
Transition metal complex, catalyst for olefin polymerization, and process for producing olefin polymer with the same
The present invention relates to a transition metal complex represented by the formula (I):
wherein M represents a Group 4 transition metal;
—Y— represents (a): —C(R 1 )(R 20 )-A-,...
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7439378 |
Fulvene, metallocene catalysts and preparation method thereof, and preparation of polyolefines copolymer using the same
The present invention relates to a novel fulvene compound and a preparation method thereof, and more particularly to a fulvene compound having substituted groups in the 2- and 5-positions, prepared...
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7432336 |
Catalysts for propylene copolymers
The present invention relates to propylene based copolymers and to processes for producing propylene based copolymers, particularly propylene-ethylene copolymers. These unique copolymers are...
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7405261 |
Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and process for preparing polyolefins
The present invention relates to compounds of the formula (I):
where
M 1 is an element of group 3, 4, 5 or 6 of the Periodic Table, X are halogen, hydrogen, C 1 -C 20 -alkyl, C 2 -C 20...
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7388062 |
Group IIIb metal complexes with “constrained geometry” fluorenyl based ligands
The present invention discloses a metallocene catalyst component based on a Group IIIb metal of the periodic Table and a bridged heteroatom-fluorenyl ligand. It also discloses its method of...
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7358381 |
Racemoselective preparation of bridged metallocene complexes having unsubstituted or 2-substituted indenyl ligands
The invention relates to a process for preparing racemic metallocene complexes by reacting transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and...
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RE40121 |
Transition metal compound
The present invention relates to zwitterionic neutral transition metal compounds. The compounds are suitable as catalyst components for the polymerization of olefins.
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7307177 |
Metallocene complexes, their synthesis and use in catalyst systems for olefin polymerization
A metallocene complex is represented by the the formula
(C p R 5 ) n MX k
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7285608 |
Metallocene ligands, metallocene compounds and metallocene catalysts, their synthesis and their use for the polymerization of olefins
A catalyst system includes a metallocene compound having the formula R 9 L 1 L 2 M 1 R 1 R 2 wherein R 9 is a bridge between ligands L 1 and L 2 and M 1 is a metal of Group IVB of the...
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7276567 |
Heterocyclic substituted metallocene compounds for olefin polymerization
This invention relates to compounds represented by formula:
wherein
M is a group 3, 4, 5 or 6 transition, lanthanide, or actinide metal atom; E is an indenyl ligand substituted in any position...
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7250478 |
Silicon containing cyclopentadienyl ring for metallocene catalyst components
The present invention refers to a metallocene catalyst component for producing polyolefins according to formula (I) R″ s (CpR n ) g (CpR n ) M Q 3-g (I) or according to formula (II) R″(CpR n...
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7247595 |
Supported metallocene catalyst and olefin polymerization using the same
A metallocene compound represented by the following Chemical Formula 1:
wherein M is a transition metal of Group 4; Cp denotes a cyclopentadienyl ring unsubstituted or substituted by...
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7241849 |
Group III bridged metallocene based on cyclopentadienyl-fluorenyl ligands
The present invention discloses a metallocene catalyst component of formula (Flu-R″-Cp)M(η 3 -C 3 R′ 5 )(ether) n (I) wherein Cp is a cyclopentadienyl, substituted or unsubstituted, Flu is a...
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7238818 |
Heterocyclic metallocenes and polymerization catalysts
A new class of heterocyclic metallocenes, a catalytic system containing them and a process for polymerizing addition polymerizable monomers using said catalytic system are disclosed; the...
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7232870 |
Bridged metallocene complexes, process for preparing the same and use thereof
Provided is a bridged cyclopentadienyl-dicarbollide complex having the formula of {L[(Cp)(C 2 B 9 R 1 10 )]}MR in which Cp is an unsubstituted, alkyl-substituted, aryl-substituted or fused ring...
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7230128 |
Organometallic fluorenyl compounds, preparations, and use
Fluorenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition,...
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7223878 |
Reduction of concentration of inorganic by-products and organometallic by-products in the preparation of metallocenes and economical recovery of the starting materials used
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...
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7223824 |
Multinuclear transition metal compound and catalyst system including the same
A multinuclear transition metal compound which has two or more catalytic active sites, and is useful in preparing the olefin polymer and copolymer, is disclosed. The multinuclear transition metal...
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7214747 |
Phosphorus substituted metallocene compounds for olefin polymerization
This invention relates to a metallocene compounds represented by formula:
wherein
M is a group 3, 4, 5 or 6 transition metal atom, or a lanthanide metal atom, or actinide metal atom; E is an...
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7214746 |
Phosphorus bridged metallocene compounds for olefin polymerization
This invention relates to metallocene compounds represented by formula:
wherein
M is a group 3, 4, 5 or 6 transition metal atom, or a lanthanide metal atom, or actinide metal atom; E is a...
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RE39561 |
Metallocenes containing ligands of 2-substituted indenyl derivatives, process for their preparation, and their use as catalysts
The novel metallocenes of the formula I
in which, preferably, M 1 is Zr or Hf, R 1 and R 2 are alkyl or halogen, R 3 and R 4 are hydrogen, R 5 and R 6 are alkyl or haloalkyl, —(CR 8 R...
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7193099 |
Racemoselective preparation of isolable ansa-metallocene biphenoxide complexes
The invention relates to a process for preparing racemic metallocene biphenoxide complexes by reacting bridged transition metal complexes with cyclopentadienyl derivatives of alkali metals or...
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7169483 |
Opto-electroactive device comprising a metallocene and method
Disclosed is an opto-electroactive device comprising a metallocene of the formula
wherein M is zirconium or hafnium; X is halogen and R 1 –R 5 are each independently hydrogen, aryl,...
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7166731 |
Method of preparing fulvene compounds and method of preparing ansa-metallocene compounds using the compounds
There are provided a method of simply preparing a 1,4,6-substituted, 1,4-substituted, 1,6-substituted, or 1-substituted fulvene compound, the intermediates of the fulvene compound, and a method of...
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7166684 |
Transition metal compound, catalyst for olefin polymerization and method for producing polyolefin
A novel transition metal compound wherein the transition metal belongs to group 4 of the periodic table and the transition metal compound has a hydrogen atom ligand and three cyclopentadienyl...
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7157592 |
Method for producing organo-metallic compounds of cyclopentadiene
A method for producing ferrocene and other organometallic compounds of cyclopentadiene is disclosed. Dry iron chloride (or other selected metal salt) is added to a solution of cyclopentadiene,...
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7157591 |
Metallocenes and catalyst compositions derived therefrom
Metallocenes and catalyst systems for olefin polymerization derived therefrom. The metallocenes may be represented by the formula:
wherein M 1 preferably is zirconium or hafnium; and R 5 is...
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7141688 |
Fluorinated dye stabilizers in fluorinated dielectric solvent
The present invention is directed to novel fluorinated dye stabilizers having both high quenching efficiency and solubility in halogenated solvents. These dye stabilizers have shown a significantly...
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7141637 |
Metallocene compounds and process for the preparation of propylene polymers
A metallocene compound of formula (I) wherein M is zirconium, hafnium or titanium; X is hydrogen, halogen, or a hydrocarbyl radical optionally containing heteroatoms; R 2 , R 3 , R 4 and R 5 , are...
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7122498 |
Metallocenes and catalyst compositions derived therefrom
Metallocenes and catalyst systems for olefin polymerization derived therefrom. The metallocenes may be represented by the formula:
wherein M 1 preferably is zirconium or hafnium; and R 12...
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7115761 |
Process for the production of monohalide or dihalide metallocene compounds
A process for preparing dihalide or monohalide metallocene compounds comprising contacting a compound of formula (II) (Cp)(ZR 1 m ) n (A) r ML′ y (II) wherein Cp is a cyclopentadienyl radical;...
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7112638 |
Hetero cyclic metallocene compounds and use thereof in catalyst system for producing olefin polymers
A metallocene compound of general formula (I): LGZMXp, wherein L is a divalent group, Z is a moiety of formula (II), wherein R 3 and R 4 are selected from hydrogen and hydrocarbon groups; A and B...
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7109278 |
Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and preparation of polyolefins
Organometallic transition metal compounds of the formula (I) where M 1 is an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements or the lanthanides; X are identical or different...
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7098356 |
Substituted indenyl metal complexes and polymerization process
Metal complexes comprising a substituted inden-1-yl group or hydrogenated or partially hydrogenated derivative thereof, said group being substituted at least at the 2-position thereof with a C 4-30...
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