| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 526108000 | Contains one or more elemental transition metal atoms | 23 |
| 20080242811 | Amino phosphine - A new P—N—P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions. | 10-02-2008 |
| 20090240008 | PROCESS FOR PREPARING A CATALYST CONTAINING A MODIFIED ZEOLITE AND ITS USE IN OLIGOMERIZATION OF LIGHT OLEFINS - A process for the preparation of a catalyst that contains at least one modified zeolite, whereby said zeolite—before being modified—has a maximum pore opening diameter that is less than or equal to 7 Å, and whereby said process comprises at least:
| 09-24-2009 |
| 20100076166 | CYCLIC OLEFINS COMPOUNDS, POLYMERS COMPRISING THE SAME AND LIQUID CRYSTAL ALIGNMENT FILMS INCLUDING THE POLYMERS - The present invention relates to a novel cyclic olefin compound, a polymer including the cyclic olefin compound, a liquid crystal alignment film including the polymer, and a liquid crystal display device including the liquid crystal alignment film. Since the polymer includes the cyclic olefin compound as a main chain, the thermal stability is excellent and the photoreactive speed is high. Accordingly, the production time can be reduced, the production cost can be reduced, and the anchoring force of the liquid crystal can be increased because the alignment property is stabilized due to the curing. | 03-25-2010 |
| 20100160580 | Blow molding Polyethylene Resins - Disclosed herein are various processes, including continuous fluidized-bed gas-phase polymerization processes for making a high strength, high density polyethylene copolymer, comprising (including): contacting monomers that include ethylene and optionally at least one non-ethylene monomer with fluidized catalyst particles in a gas phase in the presence of hydrogen gas at an ethylene partial pressure of 100 psi or more and a polymerization temperature of 105° C. or less to produce a polyethylene copolymer having a density of 0.945 g/cc or more and an ESCR Index of 1.0 or more wherein the catalyst particles are prepared at an activation temperature of 700° C. or less, and include silica, chromium, and titanium. | 06-24-2010 |
| 20100190937 | Co-supported catalyst system comprising chromium and group 4 metal complex - Polyethylene is made by (co)polymerizing ethylene in a gas-phase reactor using a catalyst system comprising a chromium catalyst and a Group 4 transition metal catalyst, co-supported on an inorganic oxide support. The Group 4 transition metal catalyst is defined by the formula shown, wherein M is a Group 4 metal, PI is a phosphinimide or ketimide ligand (shown), L is a monoanionic ligand which is a cyclopentadienyl or a bulky heteroatom type ligand, m is 1 or 2, n is 0 or 1, and p is an integer. The co-supported catalyst system gives access to polyethylene having a broad or bimodal molecular weight distribution. In the copolymerization of ethylene, reversed or partially reversed comonomer distribution is achieved: the Group 4 component provides polymer segments having higher molecular weight and also higher comonomer incorporation than polymer segments produced at the chromium sites. | 07-29-2010 |
| 20110015355 | PROCESS FOR THE SYNTHESIS OF ALPHA-OLEFIN POLYMERIZATION PROCATALYSTS - The invention relates to a process for the synthesis of a Ziegler Natta procatalyst, the process comprising first treating magnesium alkoxide with a twice used mixed solvent of TiCl | 01-20-2011 |
| 20120071614 | CATALYST ON SILICA CLAD ALUMINA SUPPORT - The invention concerns catalysts comprising (i) a cladded catalyst support comprising (a) a core which comprises alumina particles and (b) about 1 to about 40 weight percent silica cladding, based on the weight of the cladded catalyst support, on the surface of the core; the catalyst support having a BET surface area of greater than 20 m2/g and a porosity of at least about 0.2 cc/g; and (ii) 0.1 to 10 weight percent, based on the weight of the catalyst, of catalytically active transition metal on the surface of the cladded catalyst support; wherein the catalyst support has a normalized sulfur uptake (NSU) of up to 25 ?g/m2. The invention also concerns the production and use of such catalysts. | 03-22-2012 |
| 20120271014 | OLEFIN POLYMERIZATION PROCESS - A polymerization process for copolymerizing ethylene and a series of α-olefins to form a branched polyethylene, in which the series of α-olefins is generated in-situ by an ethylene oligomerization catalyst, is improved if the oligomerization catalyst has a Schulz-Flory constant of about 0.30 to about 0.55. This makes very little higher molecular weight α-olefins, which allows for easy removal of unpolymerized α-olefins from the polyolefin product. | 10-25-2012 |
| 20120277386 | Process of Melt Index Control - A method comprising contacting an olefin in the presence of a catalyst and a melt index modifier (MIM) under conditions suitable to form a polyolefin and recovering the polyolefin, wherein the polyolefin melt index is increased by at least about 25%, wherein the normalized catalyst activity is decreased by less than about 10%, and wherein the MIM is characterized by the general formula R | 11-01-2012 |
| 20130085242 | PREPARATION OF POLYMERS BY CONTROLLED FREE-RADICAL POLYMERIZATION - Process for preparing polymers by controlled free-radical polymerization, wherein the polymerization of one or more free-radically polymerizable monomers of the general formula (I) | 04-04-2013 |
| 20130217843 | Systems and Methods for Real-Time Catalyst Particle Size Control in a Polymerization Reactor - Polymerization reactor systems providing real-time control of the average particle size of catalyst system components are disclosed. Methods for operating such polymerization reactor systems also are described. | 08-22-2013 |
| 20140163183 | Polymerization Process for Production of Polymer - A process comprising contacting a catalyst system with one or more olefins in a bubble column reactor. Also, a polyolefin copolymer composition comprising ethylene, propylene and optionally a C | 06-12-2014 |
| 526110000 | With non-transition elemental metal, hydride thereof, or carbon to non transition metal atom bond | 9 |
| 20090203855 | Solid titanium catalyst ingredient, catalyst for olefin polymerization, and method of olefin polymerization - The present invention relates to a solid titanium catalyst component containing magnesium, titanium, halogen and a specific ester compound; a catalyst for olefin polymerization containing the solid titanium catalyst component, an organometallic compound catalyst component and an electron donor where necessary; and a polymerization method of an olefin using the catalyst for olefin polymerization. According to the present invention, an olefin polymer having a high Mw/Mn value which is an index of the molecular weight distribution is obtained, even by a single-stage polymerization. Especially an olefin polymer having a high Mz/Mw which is a high content of high molecular weight components is obtained. | 08-13-2009 |
| 20110213106 | Internal and External Donor Compounds for Olefin Polymerization Catalysts III - The present invention relates to solid catalyst components comprising titanium, magnesium, halogen and an internal electron donor compound containing at least one 1,8-naphthyl diester compound. The 1,8-naphthyl diester compounds include naphthalene-1,8-diyl dicycloalkanecarboxylate derivatives, dicycloalkenecarboxylate derivatives, 8-(cycloalkanecarbonyloxy)naphthalene-1-yl benzoate derivatives, and 8-(cycloalkenecarbonyloxy)naphthalene-1-yl benzoate derivatives. The present invention further relates to catalyst systems containing the catalyst solid components, organoaluminum compounds, and organosilicon compounds. The present invention also relates to methods of making the solid catalyst components and the catalyst systems, and methods of polymerizing or copolymerizing alpha-olefins using the catalyst systems. | 09-01-2011 |
| 20130158214 | CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS - A solid catalyst component for olefin polymerization, and in particular for the preparation of LLDPE, comprising Mg, Ti, halogen and an electron donor compound (ID) belonging to cyclic ethers having 3-6 carbon atoms, characterized by having the molar ratio Mg/Ti higher than 5, the molar ratio Mg/ID lower than 3, and by a specific X-ray diffraction spectrum. | 06-20-2013 |
| 526111000 | With non-metal P, S, O, or N containing material | 6 |
| 20100210798 | CATALYST FOR THE POLYMERIZATION OF OLEFINS - The present invention relates to catalysts systems for the polymerization of ethylene and its mixtures with olefins CH | 08-19-2010 |
| 20100305285 | SOLID TITANIUM CATALYST COMPONENT, OLEFIN POLYMERIZATION CATALYST, AND OLEFIN POLYMERIZATION PROCESS - A solid titanium catalyst component (I) comprising titanium, magnesium, halogen, a specific cyclic ester compound (a) and a specific cyclic ester compound (b), an olefin polymerization catalyst containing this catalyst component (I), and an olefin polymerization process using this olefin polymerization catalyst are disclosed. According to the solid titanium catalyst component, the olefin polymerization catalyst and the process for preparing an olefin polymer of the invention, an olefin polymer having high stereoregularity and a wide molecular weight distribution can be prepared with high activity, preparation of an olefin polymer excellent not only in molding properties such as high-speed streatchability and high-speed moldability but also in rigidity becomes possible, and besides, production cost can be reduced. | 12-02-2010 |
| 20110152480 | Catalysts for Polymerizing Olefins and Method Thereof - A solid catalyst component for polymerizing at least one olefin comprising Mg, Ti, at least one halogen, and at least one electron donor selected from arylsulfonates and arylsulfonyl derivatives of a specified formula | 06-23-2011 |
| 20130131290 | CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS - A catalyst component for the polymerization of olefins comprising Mg, Ti and at least two electron donor compounds, one of which (A) belonging to specific diolesters and the other electron donor compound (B) being selected from aromatic monoesters of the following formula (B) in which R groups equal to or different from each other, are selected from C | 05-23-2013 |
| 20130203948 | PROCESS FOR THE PREPARATION OF HIGH PURITY PROPYLENE POLYMERS - A process for the preparation of high purity propylene polymers carried out in the presence of a catalyst comprising the product obtained by reacting:—an organo-aluminium compound, with—a solid catalyst component comprising Mg, Ti and electron donor compound selected from specific diolesters, said process being carried out employing an organo-aluminum/propylene ratio equal to or lower than 1.75 mmole/kg. | 08-08-2013 |
| 20140275451 | INTERNAL AND EXTERNAL DONOR COMPOUNDS FOR OLEFIN POLYMERIZATION CATALYSTS IV - The present disclosure relates to solid catalyst components comprising titanium, magnesium, halogen and an internal electron donor compound containing at least one 9-(alkoxymethyl)-9H-fluorene compound. The 9-(alkoxymethyl)-9H-fluorene compound include octyl-9-(methoxymethyl)-9H-fluorene-9-carboxylate; 7-methyloctyl-9-(methoxymethyl)-9H-fluorene-9-carboxylate; 2-ethylhexyl-9-(methoxymethyl)-9H-fluorene-9-carboxylate; and 9-(methoxymethyl)-9H-fluorene-9-yl benzoate. The present disclosure further relates to catalyst systems containing the catalyst solid components, organoaluminum compounds, and organosilicon compounds. The present disclosure also relates to methods of making the solid catalyst components and the catalyst systems, and methods of polymerizing or copolymerizing alpha-olefins using the catalyst systems. | 09-18-2014 |
| 526112000 | With transition metal compound | 2 |
| 20090137755 | ETHYLENE POLYMER, CATALYST FOR ETHYLENE POLYMER PRODUCTION, AND METHOD FOR PRODUCING ETHYLENE POLYMER - An object of the present invention relates to provide an ethylene polymer having excellent mechanical strength and excellent molding processability in a wide molding processing temperature range. The invention relates to use an ethylene polymer comprising a repeating unit derived from ethylene, or a repeating unit derived from ethylene and a repeating unit derived from a C | 05-28-2009 |
| 20130137838 | NICKEL-BASED CATALYST COMPOSITION - In general the present invention provides a process for forming conjugated diene polymer, the process comprising the step of polymerizing conjugated diene monomer in the presence of a catalytically effective amount of a catalyst composition formed by combining (a) a nickel-containing compound, (b) an alkylating agent, (c) a fluorine-containing compound, (d) a carboxylic acid, and (e) an alcohol. | 05-30-2013 |
