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8163853 Metallocene-substituted pyridyl amines, their metal complexes, and processes for production and use thereof  
This invention relates to new transition metal complexes for use in olefin polymerization and oligomerization. The active complex is a pyridine amide having a metallocenyl substituent as part of...
8153831 Organometallic compounds, processes for the preparation thereof and methods of use thereof  
This invention relates to organometallic compounds represented by the formula (L1)yM(L2)z-y wherein M is a Group 5 metal or a Group 6 metal, L1 is a substituted or unsubstituted anionic 6 electron...
8143429 Process for producing organic transition metal complex compound, metathesis catalyst produced by using the same, ring-opening metathesis polymer obtainable with the metathesis catalyst, and process for producing the polymer  
A process for synthesizing an organic transition metal complex compound with an atom group having an electron-donor ability, in an industrially and economically advantageous manner, without a...
7851644 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 the catalytic system are disclosed; the...
7736697 Atomic layer deposition of tantalum-containing films using surface-activating agents and novel tantalum complexes  
Atomic layer deposition processes for the formation of tantalum-containing films on surfaces are provided. Also provided are novel tantalum complexes that can be used as tantalum precursors in the...
7652132 Implementation of a strategy for achieving extraordinary levels of surface area and porosity in crystals  
The present invention provides a metal-organic framework (“MOF”) comprising a plurality of metal clusters and a plurality of multidentate linking ligands. Each metal of the plurality of metal clu...
7635783 Meso-selective synthesis of ansa-metallocenes  
The present invention relates to a process for the meso-selective preparation of ansa-metallocene complexes of the formula (I), which comprises reacting a ligand starting compound of the formula...
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...
7592471 Tantalum compound, method for producing same, tantalum-containing thin film and method for forming same  
A novel tantalum compound, a method for producing the novel tantalum compound, and a method for stably forming a tantalum-containing thin film which contains the desired element. The tantalum...
7592404 Half metallocene catalyst and process for preparing syndiotactic styren polymer using the same  
The present invention relates to a transition metal half metallocene catalyst with a noble structure for preparing syndiotatic styrene polymer having high activity, superior stereoregularity, high...
7547796 Organometallic compounds, processes for the preparation thereof and methods of use thereof  
This invention relates to organometallic precursor compounds represented by the formula (Cp(R′)x)yM(H)z-y, a process for producing the organometallic precursor compounds, and a method for d...
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...
7329768 Chemical vapor deposition precursors for deposition of tantalum-based materials  
Tantalum precursors suitable for chemical vapor deposition of tantalum-containing material, e.g., tantalum, TaN, TaSiN, etc., on substrates. The tantalum precursors are substituted cyclopentadienyl...
7288198 Removal of alcohols and water from a methylcyclopentadiene recycle stream in a process for the synthesis of methylcyclopentadienyl manganese tricarbonyl  
During the process of synthesis of methylcyclopentadienyl manganese tricarbonyl (MMT), a key raw material methylcyclopentadiene (MCP) is used. The MCP component may be recycled for subsequent...
7268095 Transition metal catalysts for (co) polymerizing of olefinic monomers  
A compound of the formula Ia or Ib; where,in the formula Ia,E1 is O, S, Se, Te, NR, CR2, or PR;E2, E3 are each CR, N, or P;E4 is N, or P;E5 is OH, SH, NHR, OR′, SR′, or NRR′;E6 is NH, PH, NR′, ...
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 (CpRn)g (CpRn) M Q3-g (I) or according to formula (II) R″(CpRn)MeXQ (II) whe...
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...
7238821 Method for large scale production of organometallic compounds  
This invention relates to a one pot method for large scale production of an organometallic compound comprising (i) reacting a hydrocarbon or heteroatom-containing material with a base material in...
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,...
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...
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, M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R3 and R4 are hydrogen, R5 and R6 are alkyl or haloalkyl,...
7198771 Polymeric and carbon compositions with metal nanoparticles  
The invention comprises a chemical composition with the structure shown below. The composition can be polymerized or pyrolyzed, forming transition metal nanoparticles homogeneously dispersed in a...
7196210 Isoreticular metal-organic frameworks, process for forming the same, and systematic design of pore size and functionality therein, with application for gas storage  
The ability to design and construct solid-state materials with pre-determined structures is a grand challenge in chemistry. An inventive strategy based on reticulating metal ions and organic...
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...
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,...
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 M1 preferably is zirconium or hafnium; and R12 is...
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 R3 and R4 are selected from hydrogen and hydrocarbon groups; A and B are...
7105672 Cyclometallated catalysts  
A catalyst compound of formula I or II: (wherein R1–R11, M, E, T, X, Y, m and n are defined herein). The compound, when combined with a suitable activator, is active for the polymerization of o...
RE39156 Process for the preparation of polyolefins  
A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula Ra—CH═CH—Rb, in which Ra and Rb are identical or different and are a hydro...
7067686 Synthesis of benzyl-metal compounds  
Disclosed are methods of producing di-, tri- or tetrabenzyl-metal compounds comprising combining a metal salt with a (benzyl)nMgX2-n compound at from less than 30° C., wherein n is 1 or 2 and X is ...
7049453 “Constrained geometry” metallocenes, method for the production thereof and use of the same for the polymerisation of olefins  
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...
6992204 Method for the selective production of racemic metallocene complexes  
The invention relates to a method for producing racemic metallocene complexes by reacting bridged or non-bridged transition metal complexes with cyclopentadienyl derivatives of alkaline or alkaline...
6984743 Method for producing metallocenes  
The present invention relates to a process for preparing a metallocene, which comprises reacting a ligand starting compound with an adduct of the formula (I), M1XnDa (I) where M1 is a metal of...
6967256 Formation of enediynes by reductive coupling followed by alkyne metathesis  
One aspect of the present invention relates to methods of preparing enedialkylidyne complexes, enediynes, and alkyne metathesis catalysts, as well as methods of catalyzing alkyne metathesis...
6960550 Catalyst systems for high melting thermoplastic elastomeric α-olefin polymers and plastomers  
A metallocene catalyst system component for polymerization of olefins includes at least one 2-arylindenyl ligand substituted on the 1-position by a substituted or unsubstituted alkyl, alkylsilyl,...
6903229 Metallocene compositions  
This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene...
6900343 Method for the purification of metallocenes  
A process for purifying metallocenes in which a sparingly soluble metallocene halide is converted into a readily soluble and readily crystallizable metallocene by replacement of at least one halide...
6872843 Non-metallocene compounds, method for the production thereof and use of the same for the polymerization of olefins  
The invention relates to a method for producing special transition metal compounds, to novel transition metal compounds and to the use of the same for the polymerisation of olefins.
6872844 Metal complexes containing acetylenic ligands, polymerization catalysts and addition polymerization process  
A complex of a Group 3-10 metal, said complex comprising a cyclic group containing delocalized electrons, a bridging group connecting he metal with the cyclic group, and acetylene or a derivative...
6855783 Supported metallocene catalysts  
Supported metallocene catalysts and processes for the use of such catalysts in isotactic polymerization of a C3+ ethylenically unsaturated monomer. The supported catalysts comprise a particulate...
6849753 Process for preparation of half-vanadocene compound  
A process for preparing a half-vanadocene compound, the process comprising reacting chlorine gas with a vanadocene compound represented by the formula (1) Cp2VX2 (1) wherein Cp represents...
6833464 Catalyst composition, method of making same and its use in olefin polymerization  
A composition of matter comprising a compound having the general formula: [CpM(ArF)Y]pwhereinCp is a substituted or unsubstituted cyclopentadienyl ligand or cyclopentadienyl-type bulky ligand...
6831187 Multimetallic catalyst compositions for the polymerization of olefins  
The present invention relates to novel hetero-multimetallic catalyst precursors and catalysts for the polymerization of olefins.
6825371 Catalysts for polymerization of α-olefins, process for producing α-olefin polymers, novel transition metal compounds and catalyst components for polymerization of α-olefin  
The present invention relates to a catalyst for polymerization of α-olefin, which comprises: an essential component (A) of a transition metal compound,an essential component (B) of an ion ...
6824824 Method for recycling organometallic compound for MOCVD  
The present invention is a method for recycling an organometallic compound for MOCVD comprising extracting an unreacted organometallic compound from a used raw material which has undergone a thin...
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...
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...
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 actinide...
6723676 1,3-disubstituted indene complexes  
The present invention relates to organometallic compounds of transition metals with an indenyl ligand bonded in the 2-position and substituted in the 1,3-position, a process for their production,...
6693153 Catalyst system for the polymerization of alkenes to polyolefins  
The invention provides metallocene catalyst systems for the controlled polymerization of alkenes to a wide variety of polyolefins and olefin coplymers. Catalyst systems are provided that...
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