Class / Patent application number | Description | Number of patent applications / Date published |
502117000 | Component B metal is other than titanium or vanadium | 24 |
20080293562 | 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 and a boron-containing activator. The ultra-high molecular weight, linear low density polyethylene has a weight average molecular weight greater than 1,000,000 and a density less than 0.940 g/cm | 11-27-2008 |
20090082195 | Olefin polymerization catalysts - A catalyst composition and method for olefin polymerization are provided. In one aspect, the catalyst composition is represented by the formula α | 03-26-2009 |
20100029469 | 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)polymerization of olefins such as ethylene and α-olefins, and the copolymerization of such olefins with polar group-containing olefins. These and other nickel complexes of neutral and monoanionic bidentate ligands copolymerize ethylene and polar comonomers, especially acrylates, at relatively high ethylene pressures and surprisingly high temperatures, and give good incorporation of the polar comonomers and good polymer productivity. These copolymers are often unique structures, which are described. | 02-04-2010 |
20110287927 | PROCESS FOR OLIGOMERIZATION OF OLEFINS THAT USES A CATALYTIC COMPOSITION THAT COMPRISES AN ORGANOMETALLIC COMPLEX THAT CONTAINS AN ALKOXY LIGAND THAT IS FUNCTIONALIZED BY A HETEROATOM - The invention describes a process for oligomerization of olefins into compounds or into a mixture of compounds of general formula CpH2p with 4≦p≦80 that employs a catalytic composition that comprises at least one organometallic complex of an element of group IV that is selected from among titanium, zirconium, or hafnium, whereby said organometallic complex contains at least one alkoxy-type ligand that is functionalized by a heteroatom that is selected from among nitrogen, oxygen, phosphorus or sulfur, or by an aromatic group. | 11-24-2011 |
20110312489 | Fluorinated Alkoxy-Imino Catalyst Components - This invention relates to fluorinated alkoxy-imino metallic complexes and their use in catalyst systems for the polymerisation or oligomerisation of ethylene and alpha-olefins. | 12-22-2011 |
20120058886 | Nano-Linked Metallocene Catalyst Compositions and Their Polymer Products - The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided. | 03-08-2012 |
20120129683 | POLYMERIZATION CATALYSTS AND METHOD FOR PRESERVATION OF SAME - The invention provides a polymerization catalyst produced by bringing components (A) to (D) into contact with one another in a hydrocarbon solvent at 30 to 60° C., wherein the component (A) is a transition metal compound, the component (B) is a solid boron compound capable of forming an ion pair with component (A), the component (C) is an organoaluminum compound, and the component (D) is one or more unsaturated hydrocarbon compounds selected from among an α-olefin, an internal olefin, and a polyene; and the amounts of component (B) and component (C) are 1.2 to 4.0 mol and 5.0 to 50.0 mol, respectively, on the basis of 1 mol of component (A), which catalyst exhibits high activity and can be readily supplied to a polymerization reaction system. The invention also provides a method of storing the polymerization catalyst at 0 to 35° C. | 05-24-2012 |
20120184431 | TRANSITION METAL COMPLEX, PREPARATION METHOD FOR SAID TRANSITION METAL COMPLEX, TRIMERIZATION CATALYST, PREPARATION METHOD FOR 1-HEXENE, PREPARATION METHOD FOR ETHYLENE POLYMER, SUBSTITUTED CYCLOPENTADIENE COMPOUND, AND PREPARATION METHOD FOR SAID SUBSTITUTED CYCLOPENTADIENE COMPOUND - Disclosed is transition metal complex that serves as a catalytic component with which 1-hexene can be produced efficiently with excellent selectivity, even under high temperature conditions, by means of an ethylene trimerization reaction. Also disclosed is a method for economically preparing a butyl-branched ethylene polymer, even under high temperature conditions, by using said transition metal complex as an ethylene trimerization catalyst, and polymerizing ethylene in the presence of an olefin polymerization catalyst that is obtained by bringing an olefin copolymerization catalyst and an activating co-catalytic component into contact with one another. Said transition metal complex is represented by the following general formula (1), wherein M | 07-19-2012 |
20130085060 | Half-Metallocene Compounds and Catalyst Compositions - The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins also are provided. | 04-04-2013 |
20130116113 | CATALYST COMPOSITION, PRODUCTION PROCESS FOR NORBORNENE BASE COPOLYMER BY USING CATALYST COMPOSITION, NORBORNENE BASE COPOLYMER AND HEAT RESISTANT FILM PREPARED BY USING THE SAME - Provided are a catalyst composition comprising a main catalyst (A) and a promoter (B), wherein the main catalyst (A) is a complex represented by Formula (1): | 05-09-2013 |
20130178359 | Catalyst Compositions for Producing High Mz/Mw Polyolefins - The present invention provides a polymerization process utilizing a dual ansa-metallocene catalyst system. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, a non-bimodal molecular weight distribution, a ratio of Mw/Mn from about 3 to about 8, and a ratio of Mz/Mw from about 3 to about 6. | 07-11-2013 |
20140005035 | Supported Metallocene Catalysts | 01-02-2014 |
20140045681 | Particulate Metallocene-Alumoxane Catalyst - The invention relates to a process for the preparation of a particulate polyethylene product in a loop reactor, wherein the polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catalyst immobilized on a porous silica support; and whereby said metallocene-alumoxane catalyst is heterogeneously distributed on said porous silica support. | 02-13-2014 |
20140057777 | Catalyst Systems Containing a Bridged Metallocene - The present invention provides polymerization processes utilizing a catalyst system containing an ansa-metallocene and a second metallocene compound for the production of olefin polymers. | 02-27-2014 |
20140066288 | METALLOCENE COMPOUND, CATALYST COMPOSITION COMPRISING THE SAME, AND AN OLEFINIC POLYMER PRODUCED USING THE SAME - The present invention relates to a novel metallocene compound, a catalyst composition comprising the same, and to olefinic polymers produced using the same. The metallocene compound according to the present invention and the catalyst composition comprising the same can be used when producing olefinic polymers, have outstanding copolymerisation properties, and can produce olefinic polymers of high molecular weight. In particular, when the metallocene compound according to the present invention is employed, highly heat resistant block copolymers can be produced, and olefinic polymers can be produced which have a high melting point (Tm) even if the comonomer content is increased when producing the olefinic polymer. | 03-06-2014 |
20140121095 | Process for Preparing Catalysts and Catalysts Made Thereby - A process for preparing a catalyst comprising (A) selecting a catalyst support selected from the group consisting of gels of silica, silica alumina, alumina, aluminum phosphate, aluminaphospate, and combinations of two or more thereof; (B) mixing the catalyst support with one or more chromium containing compound, wherein the chromium containing compound is selected from the group consisting of chromium containing compounds which are oxidizable to a Cr | 05-01-2014 |
20140194277 | ETHYLENE-BASED POLYMER, POLYETHYLENE-BASED RESIN COMPOSITION AND USE THEREOF, CATALYST COMPONENT FOR OLEFIN POLYMERIZATION, OLEFIN POLYMERIZATION CATALYST CONTAINING THE COMPONENT, AND METHOD FOR PRODUCING ETHYLENE-BASED POLYMER BY USING THE CATALYST - An object of the present invention is to provide a polyethylene-based resin composition excellent in the moldability and at the same time, excellent in the balance between impact strength and stiffness as well as in the transparency, and a molded product and a film, which are obtained by the molding of the polyethylene-based resin composition. The polyethylene-based resin composition of the present invention comprises from 41 to 99 wt % of (A) an ethylene-based polymer satisfying specific conditions and from 1 to 59 wt % of (B) an ethylene-based polymer satisfying specific conditions, wherein MFR of the composition as a whole is from 0.05 to 50 g/10 min and the density is from 0.910 to 0.960 g/cm | 07-10-2014 |
20150011382 | LIGAND COMPOUND, CHROMIUM COMPOUND AND CATALYST SYSTEM INCLUDING THE SAME - The present invention relates to a ligand compound, a chromium compound, and a catalyst system including the same. The catalyst system including the ligand compound or chromium compound according to the present invention exhibits high catalytic activity in ethylene oligomerization reaction, and therefore, polyethylene can be prepared using a small amount of comonomers or using only ethylene without comonomers. | 01-08-2015 |
20150299351 | Cyclobutylidene-Bridged Metallocenes and Catalyst Systems Containing the Same - Disclosed herein are catalyst compositions containing cyclobutylidene-bridged metallocene compounds. These catalyst compositions can be used for the polymerization of olefins. | 10-22-2015 |
20160053031 | NON-CYCLOPENTADIENYL-BASED CHROMIUM CATALYSTS FOR OLEFIN POLYMERIZATION - Provided is a non-cyclopentadienyl-based chromium-ligand complex, preferably a chromium-ligand complex of formula (J): LCr(R | 02-25-2016 |
20160159943 | Catalyst Systems Containing Boron-Bridged Cyclopentadienyl-Fluorenyl Metallocene Compounds With An Alkenyl Substituent - Disclosed herein are catalyst compositions containing boron-bridged, cyclopentadienyl-fluorenyl metallocene compounds with an alkenyl substituent. These catalyst compositions can be used for the polymerization of olefins. For example, ethylene copolymers produced using these catalyst compositions can be characterized by a combination of a flat or a conventional comonomer distribution and low levels of long chain branching. | 06-09-2016 |
20160159948 | Boron-Bridged Bis-Indenyl Metallocene Catalyst Systems and Polymers Produced Therefrom - Disclosed herein are catalyst compositions containing boron bridged, bis-indenyl metallocene compounds with an alkenyl substituent. These catalyst compositions can be used for the polymerization of olefins. For example, ethylene copolymers produced using these catalyst compositions can be characterized by a density less than 0.92 g/cm | 06-09-2016 |
20160167033 | CATALYST COMPOSITION AND PROCESS FOR OLIGOMERIZATION OF ETHYLENE | 06-16-2016 |
20160168284 | Processes for Preparing Solid Metallocene-Based Catalyst Systems | 06-16-2016 |