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| Number | Title | Issue Date |
| 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 donor ligand, ... | 04/10/2012 |
| 8063236 | Method for transferring N-atoms from metal complexes to organic and inorganic substrates A complex for transference of a nitrogen atom to an electrophilic reagent comprises a hard-hard-hard pincer ligand and an early transition metal bound to a nitride. The pincer ligand can be an OCO ligand and the transition metal can be Mo. The complex can be used to... | 11/22/2011 |
| 7541481 | Monocyclopentadienyl complex Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, heteroaromatic ring system bound via a specific bridge, a catalyst system, comprising at least one of these monocyclopentadienyl complexes, th... | 06/02/2009 |
| 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 |
| 7345184 | Method and system for refurbishing a metal carbonyl precursor A method and system for refurbishing a metal carbonyl precursor. The method includes providing a metal precursor vaporization system containing a metal carbonyl precursor containing un-reacted and partially reacted metal carbonyl precursor, flowing a CO-containing g... | 03/18/2008 |
| 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 |
| 7253213 | Anionic and Lewis base photopolymerization process and its use for making optical articles The invention relates to a process for polymerising a monomer, polymerizing and/or crosslinking an oligomer, or crosslinking a polymer or copolymer, said monomer, oligomer, polymer and copolymer being selected among precursor monomers, urethane, thiourethane and epi... | 08/07/2007 |
| 7250523 | Imido-tethered carbenes of molybdenum for ring-opening metathesis polymerization and ring-closing metathesis Compounds and processes for catalytic ring-opening cyclooligomerization metathesis and ring-closing metathesis of olefins are described. The compound is a molybdenum or tungsten metal (M) complex which comprises an imido ligand (N—R) bound to the M to provide an M... | 07/31/2007 |
| 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 |
| 7244858 | Organometallic precursor compounds This invention relates to organometallic precursor compounds represented by the formula (L)M(L′)2(NO) wherein M is a Group 6 metal, L is a substituted or unsubstituted anionic ligand and L′ is the same or different and is a π acceptor ligand, a proce... | 07/17/2007 |
| 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 |
| 7211235 | Method for producing hydrotalcites A method is described for the manufacture of hydrotalcites by using at least one compound of a bivalent metal (Component A) and at least one compound of a trivalent metal (Component B), wherein at least one of these components is not used in the form of a solution, ... | 05/01/2007 |
| 7202373 | Monocyclopentadienyl complexes Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one uncharged donor bound via a boron-containing bridge and comprising one or more atoms of group 15 and/or 16 of the Periodic Table of the Elements and is bound to a metal selected f... | 04/10/2007 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 7045644 | Imidochromium compounds 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 for olefin polymerization and to methods for producing said imidochr... | 05/16/2006 |
| 7030257 | Metallocenes and processes for their preparation Disclosed herein are novel high oxidation state metallocene compounds, processes for preparing these compounds and uses of these compounds. ... | 04/18/2006 |
| 7019158 | Chiral organometallic compounds for use in asymmetric synthesis Chiral organometallic compounds are provided which comprise certain non-symmetrically substituted cyclopentadiene complexed to a transition metal. The cyclopentadiene has a second coordinating group which also complexes the transition metal and is attached to the cy... | 03/28/2006 |
| 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 |
| 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 |
| 6977235 | Catalyst systems comprising a calcined chromium catalyst and a non-transition metal cyclopentadienyl cocatalyst According to an embodiment, catalyst systems for polymerizing olefins include a catalyst comprising chromium and a cocatalyst comprising a substituted or unsubstituted non-transition metal cyclopentadienyl compound (Cp). The catalyst also comprises an inorganic oxid... | 12/20/2005 |
| 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 |
| 6933400 | Complex compounds and their use in olefin polymerization Complexes of the formulae I a to d, where M is an element of groups 6 to 10 of the Periodic Table of the Elements, preferably Ni, can be used for the polymerization and copolymerization of olefins, for example in suspe... | 08/23/2005 |
| 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 |
| 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 |
| 6888002 | Transition metal complexes with diaminocarbene ligands and their use in reactions catalyzed by transition metals The invention relates to novel transition metal complexes containing at least one diaminocarbene ligand, to processes for preparing these transition metal complexes and to their use as catalysts in organic reactions. ... | 05/03/2005 |
| 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 |
| 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 thereof. ... | 03/29/2005 |
