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| Number | Title | Issue Date |
| 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 compound having a proton-donor ability being a metal salt, and a metathesi... | 03/27/2012 |
| 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 compound enables one to selectively form a tantalum-containing thin film f... | 09/22/2009 |
| 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 heating the reaction mixture obtained in this way to a temperature i... | 04/15/2008 |
| 7341972 | Singlet oxygen catalysts including condensed carbon molecules The present invention relates to novel singlet oxygen catalysts useful for the production of specialty chemicals. The catalysts include a core material selected from amine coated polymeric beads, amine coated glass beads and multi-generational dendrimers to which co... | 03/11/2008 |
| 7332618 | Organometallic precursor compounds This invention relates to organometallic precursor compounds represented by the formula (H)mM(R)n wherein M is a metal or metalloid, R is the same or different and is a substituted or unsubstituted, saturated or unsaturated, heterocyclic radica... | 02/19/2008 |
| 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 tantalum compounds. In one aspect of the invention, such compounds a... | 02/12/2008 |
| 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 reaction processes. The recycle stream of MCP is washed with water and, op... | 10/30/2007 |
| 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, E... | 09/11/2007 |
| 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... | 07/31/2007 |
| 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 heterocyclic metallocenes correspond to the formula (I): YjR″... | 07/03/2007 |
| 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 the presence of a solvent and under reaction conditions sufficient to ... | 07/03/2007 |
| 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, polymers resulting from such polymerizations are disclosed. ... | 06/12/2007 |
| 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 by-product and at least one inorganic by-product as by-products comprises the... | 05/29/2007 |
| 7211538 | Catalytic systems for the polimerization and copolimerization of alpha-olefins Catalyst component for the polymerization of alpha-olefins in solution, in suspension, in gas phase at low and high pressure and temperature or in mass at high pressures and high or low temperatures, characterized in that is defined by general formulas I or II | 05/01/2007 |
| 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 alky... | 04/10/2007 |
| 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 thermoset or carbon composition. The size of the nanoparticles can be ... | 04/03/2007 |
| 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 carboxylate links into extended networks has been advanced to a point that ... | 03/27/2007 |
| RE39532 | 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 alky... | 03/27/2007 |
| 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 alkaline earth metals and heating the reaction mixture obtained in this wa... | 03/20/2007 |
| 7176158 | Polymerization catalyst composition Copolymerization of Ni(H) or Co(II) acenaphthene diimine complexes containing olefinic substituents on aryl groups in the presence of a free radical initiator results in polymerized late transition metal catalysts which can be used for olefin polymerization or oligo... | 02/13/2007 |
| 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, diethylamine, potassium and dibenzo-18-crown-6 ether in a cooled flask un... | 01/02/2007 |
| 7148173 | Catalytic systems for the polymerization and copolymerization of alpha-olefins Heterogeneous catalytic compositions obtained by reacting a porous inorganic support with an alumoxane and subsequently supporting at least one metallocene compound thereon. A process for polymerization of α-olefins in a slurry or in a gas phase, the process cataly... | 12/12/2006 |
| 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... | 10/17/2006 |
| 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... | 09/26/2006 |
| 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 o... | 09/12/2006 |
| 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 hydrogen atom or a hydrocarbon... | 07/04/2006 |
| 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 a monoanionic group; wherein the combining tak... | 06/27/2006 |
| 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 copolymerization of olefins. ... | 05/23/2006 |
| 7002031 | Preparation of silicon-bridged metallocene compounds A process for obtaining silicon-bridged metallocene compounds comprising the following steps: a) reacting, at a temperature of between −10° C. and 70° C., the starting ligand with about 2 molar equivalents of an alkylating agen... | 02/21/2006 |
| 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 earth metals and optionally, subsequently substituting the phenolate... | 01/31/2006 |
| 6989457 | 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 tantalum compounds. In one aspect of the invention, such compounds a... | 01/24/2006 |
| 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 ... | 01/10/2006 |
| 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 reactions. The present invention also relates to methods of activating enedi... | 11/22/2005 |
| 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, or aryl substituent of 1 to 30 carbon atoms. ... | 11/01/2005 |
| 6930193 | Isoreticular metal-organic frameworks, process for forming the same, and systematic design of pore size and functionality therein, with application for gas storage An isoreticular metal-organic framework (IRMOF) and method for systematically forming the same. The method comprises the steps of dissolving at least one source of metal cations and at least one organic linking compound in a solvent to form a solution; and crystalli... | 08/16/2005 |
| 6913792 | Hybrid materials employing PPE/polystyrene/curable epoxy mixtures A curable melt blended composition and a method of making the composition by melt blending a thermoplastic polymer comprising polyphenylene ether (PPE) polymer and a polystyrene polymer, preferably high impact polystyrene (HIPS), and optionally a compatiblizer, with... | 07/05/2005 |
| 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 compositions may be represented by the formula: | 06/07/2005 |
| 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 ligand by an alternative negatively charged ligand and the metalloce... | 05/31/2005 |
| 6888017 | Metallocene compositions This invention relates to bridged indenyl metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The bridge may be represented by the formula: | 05/03/2005 |
| 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. ... | 03/29/2005 |
