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| Number | Title | Issue Date |
| 7696397 | Catalytic composition and its application to olefin oligomerization An improved catalytic composition for oligomerization, in particular dimerization, of monoolefins comprises the product resulting from bringing the following three constituents into contact in any order: a) at least one divalent nickel compound; ... | 04/13/2010 |
| 7429684 | Process for oligomerization of ethylene to linear α-olefins A process for preparing α-olefins from ethylene wherein the α-olefins are substantially free of olefins having greater than 12 carbon atoms comprises contacting ethylene under oligomerization conditions with a 2,6-bis(phenylimino) pyridyl metal halide catalyst in ... | 09/30/2008 |
| 7332455 | Catalyst component and catalyst for olefin polymerization as well as use thereof The present invention relates to a catalyst component and a catalyst for olefin polymerization. The catalyst component utilizes magnesium halide and silica as composite support, and the particle morphology thereof can be improved by regulating the ratio of magnesium... | 02/19/2008 |
| 7323611 | Process for producing olefin oligomer A process for producing an olefin oligomer, which comprises the steps of (1) contacting an olefin with an organoaluminum compound to produce a contact product (i), (2) contacting a transition metal compound with a compound represented by the formula, R1R | 01/29/2008 |
| 7291575 | Active, heterogeneous bi- or tri-dentate catalyst A catalyst composition, and olefin polymerization process using same, formed from a mixture of a non-aluminoxane aluminum compound, an inorganic oxide and a transition metal bidentate or tridentate complex in certain prescribed proportions. The composition can be fo... | 11/06/2007 |
| 7238747 | Plasticized polypropylene thermoplastics The invention is directed to a plasticized polypropylene thermoplastic composition comprising a blend of A) from 50 to 99.9 wt % of a thermoplastic polymer derived from polypropylene, optionally with one or more copolymerizable monomer selected from C2-C | 07/03/2007 |
| 7235703 | Catalytic composition and its application to olefin oligomerization An improved catalytic composition for oligomerization, in particular dimerization, of monoolefins comprises the product resulting from bringing the following three constituents into contact in any order: a) at least one divalent nickel compound; ... | 06/26/2007 |
| 7211535 | Enhanced polyolefin catalyst The present invention provides a novel process for preparing a catalyst useful in gas phase polymerization of olefins wherein the physical properties of the polymer and the productivity of the catalyst can be altered depending on the sequence of addition of the cata... | 05/01/2007 |
| 7199075 | Organometallic complexes that comprise bidentate chelating ligands that combine a nitrogen-containing heterocyclic compound with an alcohol and their use for catalyzing the oligomerization of olefins A catalyst for the oligomerization of olefins, especially ethylene contains: at least one nickel complex e.g. Li2 Ni X2 that results from bringing into contact a nickel salt e.g. a nickel carboxylate with a bi... | 04/03/2007 |
| 7157612 | Olefin production process A process is provided to stabilize and/or reactivate an olefin production catalyst system which comprises contacting an olefin production catalyst system, either before or after use, with an aromatic compound. ... | 01/02/2007 |
| 7141636 | Method for producing a polymer The present invention relates to a process for preparing a catalyst, a novel polymer and a process for preparing the polymer. In particular, the invention provides a process for preparing a homopolymer and/or copolymer having an irregular particle structure and ... | 11/28/2006 |
| 7126037 | Butene oligomer derivatives having terminal 1,4-butanediol functional groups Butene oligomer derivatives having tert-butyl groups as one of the terminal groups, having a repeating unit of the main hydrocarbon chain consisting of 80% by mole or more of —CH2C(CH3)2—, and carrying the other terminal group co... | 10/24/2006 |
| 6946420 | Coordination catalyst systems employing chromium support-agglomerate and method of their preparation The present invention is directed to a coordinating catalyst system comprising at least one pre-catalyst selected from late transition metal bidentate or tridentate ligand containing compounds, at least one support-agglomerate having chromium immobilized thereto (e.... | 09/20/2005 |
| 6943224 | Process for preparing supported transition metal catalyst systems and catalyst systems prepared thereby A process for forming a coordination catalyst system comprising sequentially or substantially simultaneously contacting: (I) pre-catalyst reactants comprising (a) at least one first ligand-containing reactant; and (b) at least one first transition metal reactant sui... | 09/13/2005 |
| 6930218 | Process for the preparation of linear low molecular weight olefins by the oligomerization of ethylene A process for the preparation of low molecular weight linear alpha olefins is disclosed. The process comprises oligomerising ethylene in an inert aliphatic or aromatic solvent in the presence of a catalyst comprising of a first component selected from zirconium alko... | 08/16/2005 |
| 6927261 | Method of making supported transition metal polymerization catalysts and compositions formed therefrom The present invention is directed to a novel one-step method for forming a supported catalyst complex of high activity by substantially simultaneously contacting a bidentate or tridentate ligand forming compound, a transition metal compound and a Lewis acid support-... | 08/09/2005 |
| 6858767 | Process for producing liquid polyalphaolefin polymer, metallocene catalyst therefor, the resulting polymer and lubricant containing same A liquid polyalphaolefin homo- or copolymer, preferably 1-decene, which is substantially amorphous is obtained by a polymerization process employing hydrogen and a particular type of metallocene catalyst. Additionally, liquid polyalphaolefin homo- or copolymer conta... | 02/22/2005 |
| 6743960 | Method for oligomerizing olefins to form higher olefins using sulfur-containing and sulfur-tolerant catalysts The present invention is related to a method for oligomerizing olefinic monomers under oligomerization conditions to form higher olefins. The novel method comprises contacting a feed comprising the olefinic monomers with a catalyst composition comprising the reactio... | 06/01/2004 |
| 6680417 | Oligomerization using a solid, unsupported metallocene catalyst system A process for the production of an oligomer oil by the polymerization of a feedstock containing one or more C3 to C20 1-olefins in the presence of a solid unsupported metallocene- and activator-containing catalyst system which is for... | 01/20/2004 |
| 6555723 | Continuous manufacturing process for alpha-olefins A manufacturing process for -olefins using certain iron containing ethylene oligomerization catalysts together with alkylaluminum cocatalysts, in which using a low ratio of Al:Fe in the process results in a lowered formation of undesired polyethyle... | 04/29/2003 |
| 6534691 | Manufacturing process for -olefins An efficient manufacturing process for -olefins using certain iron containing ethylene oligomerization catalysts, comprises one or more liquid full reactors which are approximately at the bubble point of reacting ethylene, and optionally a final re... | 03/18/2003 |
| 6518384 | Preparation of highly branched, liquid polymers of ethylene and/or -olefins in the presence of aluminum-based catalyst systems Ethylene and/or propylene are polymerized to form highly branched, liquid polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which comprises (1) an alkyl aluminum component, (2) an... | 02/11/2003 |
| 6232257 | Preparation of highly branched, liquid polymers of ethylene and/or -olefins in the presence of aluminum-based catalyst systems Ethylene and/or propylene are polymerized to form highly branched, liquid polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which comprises (1) an alkyl aluminum component, (2) an... | 05/15/2001 |
| 6153807 | Process for producing ethylene/alpha-olefin copolymer A copolymer of ethylene and an alpha-olefin having an ethylene content of from 30 to 90 mole %, a number average molecular weight of from 300 to 30,000 and a molecular weight distribution defined by a Q value (the ratio of the weight average molecular wei... | 11/28/2000 |
| 6150576 | Synthesis of branched polyethylene fluids for use in lubricant compositions The novel synthetic polyethylene fluids of the present invention are characterized by high viscosity indices (about 94-151 VI), low pour points (about -60 to -10° C.), and a kinematic viscosity of about 6 to 28 cSt KV at 100° C. The product compositions... | 11/21/2000 |
| 6127301 | Catalyst system and method for reaction of olefin The present invention provides a novel catalyst system which can be preferably used in the trimerization, oligomerization reaction or polymerization reaction of an olefin, and a method for the trimerization, oligomerization or polymerization reaction of a... | 10/03/2000 |
| 6103946 | Manufacture of -olefins Alpha-olefins are manufactured in high yield and with very high selectivity by contacting ethylene with an iron complex of a selected 2,6-pyridinedicarboxaldehyde bisimine or a selected 2,6-diacylpyridine bisimine, and in some cases a selected activator c... | 08/15/2000 |
| 6063973 | Synthesis of branched polyethylene fluids for use in lubricant compositions The novel synthetic polyethylene fluids of the present invention are characterized by high viscosity indices (about 94-151 VI), low pour points (about -60 to -10° C.), and a kinematic viscosity of about 6 to 28 cSt KV at 100° C. The product compositions... | 05/16/2000 |
| 6043401 | Reactive, low molecular weight, viscous poly(1-olefins) and copoly(1-olefins) and their method of manufacture Catalysts and processes are described to make low molecular weight, essentially terminally-unsaturated, viscous poly(1-olefin) or copoly(1-olefin) having a high terminal vinylidine content from a feed stock containing one or more 1-olefin and other volati... | 03/28/2000 |
| 6002060 | Process for oligomerisation of alpha-olefins A process for the oligomerization and co-oligomerization of alpha olefins by subjecting olefins to the step of oligomerization in the presence of a supported aluminum chloride catalyst and an organoaluminum compound as a promoter. The catalyst is separate... | 12/14/1999 |
| 5902919 | Supported Lewis acid catalyst polymerization process A supported Lewis acid catalyst, which comprises an inorganic oxide substrate having immobilized thereon at least one Lewis acid and a modifying agent containing at least one functional moiety capable of reacting with surface hydroxyl groups originally pr... | 05/11/1999 |
| 5859303 | Olefin production A process is provided to trimerize or oligomerize olefins in the presence of an olefin oligomerization catalyst and a solvent which is a product of the olefin oligomerization process.... | 01/12/1999 |
| 5856612 | Process for producing -olefin oligomer The present invention relates to a process for producing an -olefin oligomer by subjecting -olefin to oligomerization in a reaction zone in the presence of a reaction solution containing a chromium-based catalyst, which comprises, continuous... | 01/05/1999 |
| 5817905 | Process for the conversion of ethylene into light alpha olefins with the use of additives based on quaternary ammonium salts The invention concerns an improved process for the conversion of ethylene into light alpha olefins wherein the ethylene is brought into contact with a catalyst obtained by mixing a compound of zirconium with an organic compound selected from the class of ... | 10/06/1998 |
| 5817902 | Process for preparing -olefins The invention provides a process for making -olefins. In the chain growth reaction step of the process a jet loop reactor is used to fully use high pressure ethylene, and two or more stages of the chain growth reaction is used to raise the selectiv... | 10/06/1998 |
| 5792895 | Process for the conversion of ethylene into but-1-ene using additives based on polymethylene glycols and derivatives thereof The invention concerns an improved process for the conversion of ethylene into but-1-ene, wherein the ethylene is brought into contact with a catalyst obtained by the interaction of an alkyl titanate, possibly mixed with an ether, with a compound of alumi... | 08/11/1998 |
| 5780697 | Trialkyl aluminum displacement process A process for deactivating a nickel, cobalt, or nickel and cobalt displacement catalyst during a reaction wherein an alkyl group is displaced from a trialkyl aluminum compound in a reaction mixture containing said catalyst is disclosed. The process involv... | 07/14/1998 |
| 5750817 | Process for producing -olefin oligomers and -olefin oligomer compositions The disclosure describes a process for preparing -olefin oligomers, which comprises carrying out oligomerization of an -olefin in a solvent by reacting said -olefin in a chromium-based catalyst system composed of a combination of at l... | 05/12/1998 |
| 5744678 | Oligomerization catalysts and process using the same for the production of olefinic oligomers An oligomerization catalyst according to the invention comprises a nickel compound (A); an organophosphoric compound (B); an organoaluminum compound (C); and a compound of the group consisting of carbon-halogen bond-containing compounds, oxoacid and salts... | 04/28/1998 |
| 5648581 | Method for vapor phase polymerization of alpha-olefin A method for polymerizing or copolymerizing -olefin in a vapor phase condition by supplying to a reactor a catalyst composed of a solid catalyst component containing at least titanium and/or vanadium as well as magnesium and an organic aluminum com... | 07/15/1997 |
