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| Number | Title | Issue Date |
| 8158733 | Catalysts based on 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligands Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 metal complex that incorporates a dianionic, tridentate 2-(2-aryloxy)quinoline or 2-(2-aryloxy)dihydroquinoline ligand. In one aspect, supported catalysts are ... | 04/17/2012 |
| 8119748 | High activity, low molecular weight olefin polymerization process Group 4 metal complexes comprising a polyvalent, heteroaryl donor ligand and their use as components of olefin polymerization catalysts, especially suited for preparing propylene/ethylene copolymer products having high isotacticity and low molecular weight, are disc... | 02/21/2012 |
| 8101696 | Polyolefin solution polymerization process and polymer A catalyst composition comprising a zirconium complex of a polyvalent aryloxyether and a polymerization processes employing the same, especially a continuous, solution polymerization of ethylene and one or more C3-30 olefins or diolefins to prepare interp... | 01/24/2012 |
| 8058373 | Polypropylene solution polymerization process A process for polymerization of propylene, optionally ethylene, and further optionally one or more C4-30 α-olefins and/or one or more conjugated or nonconjugated dienes under continuous, solution polymerization conditions to prepare a high molecular weig... | 11/15/2011 |
| 8039566 | Olefin metathesis initiators bearing thiazol-2-ylidene ligands This invention relates to olefin metathesis catalysts general formula (I): having a thiazol-2-ylidene ligand of general formula (II): The catalysts have been found to be particula... | 10/18/2011 |
| 8030422 | Recoverable polymer-bound homogeneous catalysts for catalytic chain transfer process Disclosed herein are novel polymer-tethered ligands, metal complexes comprising these ligands, and the use of these complexes as chain transfer catalysts to control the molecular weight of oligomeric and polymeric materials produced in a radical polymerization proce... | 10/04/2011 |
| 7973116 | Pyridyldiamido transition metal complexes, production and use thereof Pyridyldiamido transition metal complexes are disclosed for use in alkene polymerization. The ligands are tridentate with an NNN configuration. The general formula is: where M, Z, Ln, Lw′, R1 | 07/05/2011 |
| 7973115 | Catalyst systems based on macrocyclic ligands The present invention discloses the use of rotoxane ligands to prepare catalyst systems suitable for the oligomerization or polymerization of ethylene and alpha-olefins. ... | 07/05/2011 |
| 7956141 | Metal complex containing tridentate ligand, and polymerization catalyst comprising the same The present invention provides 1) a complex comprising a mono-anionictridentate ligand, represented by the following general formula (I); 2) a polymerization catalyst composition, comprising the complex; and 3) a cis-1,4-isoprene polymer, a cis-1,4-butadiene polymer... | 06/07/2011 |
| 7868108 | Transition metal compound, ligand system, catalyst system and process for preparing polyolefins The present invention relates to transition metal compounds of the formula (I), a process for preparing polyolefins by polymerization or copolymerization of at least one olefin in the presence of at least one olefin in the ... | 01/11/2011 |
| 7858718 | Catalysts based on 2-aryl-8-anilinoquinoline ligands Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 metal complex that incorporates a dianionic, tridentate 2-aryl-8-anilinoquinoline ligand. In one aspect, supported catalysts are prepared by first combining a ... | 12/28/2010 |
| 7847041 | Cobalt-catalyzed asymmetric cyclopropanation of electron-deficient olefins Cobalt-catalyzed asymmetric cyclopropanation of electron-deficient olefins. ... | 12/07/2010 |
| 7786232 | Single site catalyst systems having a scorpion-like structure The present invention discloses single site catalyst systems having a scorpion-like three dimensional structure that are suitable for oligomerising or polymerising ethylene and alpha-olefins. ... | 08/31/2010 |
| 7776980 | Monocyclopentadienyl complexes Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one bridged keto, thioketo, imino or phosphino group, a catalyst system comprising at least one of the monocyclopentadienyl complexes and a process for preparing polyolefins by polyme... | 08/17/2010 |
| 7767773 | Catalyst compounds are use thereof This invention relates to a transition metal catalyst compound represented by the structure: wherein: each X is, independently, a hydride, a halogen, a hydrocarbyl, a substituted hydrocarbyl, a halocarbyl, or a substituted ... | 08/03/2010 |
| 7754835 | Polymerisation of ethylene and alpha-olefins with phosphino-iminophenol complexes The present invention relates to the field of single site catalyst systems based on phosphino-iminophenol complexes that are suitable for oligomerising or polymerising ethylene and alpha-olefins. ... | 07/13/2010 |
| 7750096 | Method for emulsion polymerizing olefins An aqueous polymer dispersion is prepared by reacting at least one olefin in the presence of at least one polymerization catalyst and one emulsifier in an aqueous medium by a process wherein the polymerization catalyst is prepared in an in situ reaction by reacting ... | 07/06/2010 |
| 7718745 | Heterogenisation of catalyst components Provided is a method for the production of an olefin polymer, which method comprises polymerizing an olefin monomer in the presence of a metallocene catalyst, which catalyst comprises one or more alkyl moieties having a terminal olefin group, and is selected from a ... | 05/18/2010 |
| 7678870 | Processable molecularly imprinted polymers A process is provided herein for preparing molecularly imprinted polymers for detecting a target analyte by Reversible Addition Fragmentation Chain Transfer (RAFT). The process includes providing a complex having the formula L3M wherein L is a β-diketone... | 03/16/2010 |
| 7671151 | Olefin polymerization process A process for making polyethylene having an uncommon but valuable balance of broad molecular weight distribution and a low level of long-chain branching is disclosed. The process comprises polymerizing ethylene in a single reactor in the presence of an α-olefin and... | 03/02/2010 |
| 7671150 | Polymerization of acyclic aliphatic olefins A robust, impurity tolerant method of making substantially linear polymers of acyclic aliphatic olefins using catalyst complexes comprising a single palladium metal center and a substituted tri-aryl ligand is disclosed. ... | 03/02/2010 |
| 7666961 | Olefin polymerization process A slurry process for polymerizing ethylene is disclosed. The process comprises polymerizing ethylene in the presence of an α-olefin and a catalyst comprising an activator and a supported bridged bis-indeno[2,1-b]indolyl zirconium complex. The process uses a highly ... | 02/23/2010 |
| 7655740 | Olefin polymerization process A slurry process for polymerizing ethylene is disclosed. The process comprises polymerizing ethylene in the presence of an α-olefin and a catalyst comprising an activator and a supported bridged indeno[1,2-b]indolyl zirconium complex. The process produces polyethyl... | 02/02/2010 |
| 7638586 | Olefin polymerization process A process for polymerizing ethylene is disclosed. The process comprises polymerizing ethylene in a slurry reaction in the presence of a catalyst system which comprises an activator and an indenoindolyl transition metal complex on a support material. The catalyst sys... | 12/29/2009 |
| 7635739 | Substantially linear polymers and methods of making and using same Copolymers and terpolymers containing acyclic aliphatic olefin derived units and polar monomer derived units are disclosed. Also disclosed are methods of making such copolymers and terpolymers using late transition metal catalyst complexes. ... | 12/22/2009 |
| 7598330 | Cross-metathesis of olefins directly substituted with an electron-withdrawing group using transition metal carbene catalysts The invention pertains to the use of Group 8 transition metal alkylidene complexes as catalysts for olefin cross-metathesis reactions. In particular, ruthenium and osmium alkylidene complexes substituted with an N-heterocyclic carbene ligand and at least one electro... | 10/06/2009 |
| 7579416 | Catalyst system for olefin polymerization The present invention relates to a catalyst system for olefin polymerization comprising an organic transition metal compound and, as cocatalyst, an ionic compound made up of anions of the formula (Ia), [Al(OR1)4]− (I... | 08/25/2009 |
| 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, OSO2CF3, OCOR, SR, NR2 or PR2 group, wherein R is C1-C | 08/25/2009 |
| 7566761 | Olefin polymer and process for preparing the same The present invention provides an olefin polymer having a narrow molecular weight distribution and a specific molecular weight, an olefin polymer having a functional group introduced at the terminal, a tapered polymer containing a segment wherein monomer composition... | 07/28/2009 |
| 7544749 | Polymerization catalysts, organic transition metal compounds, process for preparing polyolefins and polyolefins A catalyst system obtained by reacting at least one chiral transition metal compound and at least one cocatalyst, where the chiral transition metal compound is a transition metal compound of formula (Ia) or one of its enantiomers of the formula (Ia*), | 06/09/2009 |
| 7534842 | Catalysts for olefin polymerization This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a catalyst composition. One aspect of this invention is the formation and u... | 05/19/2009 |
| 7504465 | Linear functional copolymers of ethylene with precise and minimum run length distributions and methods of making thereof The present invention is related to a linear functional polymer having repeating units A, B and D. Unit A represents —CH2—, unit B represents and unit D represents ... | 03/17/2009 |
| 7442750 | Supported olefin polymerization catalyst Supported catalyst systems are provided comprising (a) a transition metal compound, (b) an activator comprising (iii) an aluminoxane or (iv) a Group lilA metal or metalloid compound, and (c) a support material comprising an inorganic metal oxide, inorganic metal hal... | 10/28/2008 |
| 7442819 | Catalysts for olefin polymerization or oligomerization Novel iron and cobalt complexes of certain novel tricyclic ligands containing a “pyridine” ring and substituted with two imino groups are polymerization and/or oligomerization catalysts for olefins, especially ethylene. Depending on the exact structure of the li... | 10/28/2008 |
| 7439314 | Catalysts for olefin polymerization Transition metal complexes of selected monoanionic phosphine ligands, which also contain a selected Group 15 or 16 (IUPAC) element and which are coordinated to a Group 3 to 11 (IUPAC) transition metal or a lanthanide metal, are polymerization catalysts for the (co)p... | 10/21/2008 |
| 7429634 | Polymer production at supercritical conditions This invention relates to a process to polymerize olefins comprising contacting, in a polymerization system, olefins having three or more carbon atoms with a catalyst compound, activator, optionally comonomer, and optionally diluent or solvent, at a temperature abov... | 09/30/2008 |
| 7429635 | Preparation of ultra high molecular weight linear low density polyethylene Disclosed is a method of preparing an ultra-high molecular weight, linear low density polyethylene with a catalyst system that comprises a bridged indenoindolyl transition metal complex, a non-bridged indenoindolyl transition metal complex, an alumoxane activator an... | 09/30/2008 |
| 7423101 | Catalyst composition and use thereof The present invention is directed toward Group 4, 5, 6, 7, 8, 9, 10 or 11 transition metal compounds containing neutral, mono- or di-anionic tridentate nitrogen/oxygen based ligands that are useful, with or without activators, to polymerize olefins, particularly α-... | 09/09/2008 |
| 7423098 | Polyethylene process An ethylene polymerization process is disclosed. Ethylene is polymerized in two slurry reaction zones with a C6-C10 alpha-olefin in the presence of a single-site catalyst capable of making a high molecular weight polyolefin. The process yields ... | 09/09/2008 |
| 7417098 | Method for emulsion polymerisation of olefins Process for the emulsion polymerization of one or more olefins by reacting a quinoid compound with a metal compound and a phosphine compound which is substituted by at least one polar radical and subsequently using the reaction product for the polymerization or copo... | 08/26/2008 |
