| Entries |
| Document | Title | Date |
|---|
| 20080262174 | Homogeneous Catalyst System For Producing Ethylene Homopolymer or Ethylene Copolymers With Alpha-Olefins - Disclosed is a homogeneous catalyst system for producing an ethylene homopolymer or an ethylene copolymer with α-olefin. Specifically, this invention pertains to a transition metal catalyst which has stability under high temperature solution polymerization at 120˜250° C., in which a cyclopentadiene derivative and an electron donating substituent, both of which are bonded to a Group IV transition metal acting as a central metal, are crosslinked through a silyl derivative substituted with a cyclohexyl, to a catalyst system including such a transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst, and to a method of producing an ethylene homopolymer or an ethylene copolymer with α-olefin, having high molecular weight, using the catalyst system under conditions of high-temperature solution polymerization. The catalyst according to this invention has excellent thermal stability and compatibility with a paraffin hydrocarbon solvent and thus is effective in the production of an ethylene homopolymer or an ethylene copolymer with α-olefin having various properties in commercial polymerization processes. | 10-23-2008 |
| 20080269439 | Process for the Polymerization of Alpha Olefins - A process for preparing 1-butene polymers, comprising polymerizing 1-butene or copolymerizing 1-butene with ethylene, propylene or an alpha-olefin of formula CHT | 10-30-2008 |
| 20090023873 | Process for the polymerization of olefins - A multistep process comprising the following steps: step a) polymerizing propylene and optionally one or more monomers selected from ethylene or alpha olefins of formula CH | 01-22-2009 |
| 20090036619 | Highly crystalline polypropylene waxes - Polypropylene wax having
| 02-05-2009 |
| 20090062491 | Metallocene Compounds - A bridged metallocene compound of formula (I) wherein: M is an atom of a transition metal; X, is a hydrogen atom, a halogen atom, or a hydrocarbon-based group; R1 is a C1-C40 hydrocarbon radical; R2 and R3, form together a condensed 3-7 membered ring; R4 is a hydrogen atom or a C1-C40 hydrocarbon radical; W is an aromatic 5 or 6 membered ring. | 03-05-2009 |
| 20090082532 | MODIFIED ALPHA-OLEFIN POLYMER AND PROCESS FOR PRODUCTION OF CROSS-LINKED PRODUCT THEREOF - The present invention provides a modified α-olefin polymer obtained by reacting (i) an α-olefin polymer obtained by homopolymerization or copolymerization of one kind or two kinds or more of an α-olefin having 3 or more carbon atoms and having (1) a mesopentad fraction of 40 to 75 mol % or a stereo-regularity index M4 of 75 mol % or less, (2) a molecular weight distribution converted to polystyrene equivalent of 3.0 or less determined by a GPC method and (3) an intrinsic viscosity [η] (in tetralin, at 135° C.) of 0.01 to 5.0 dL/g, (ii) a radical initiator and (iii) a monomer having a silane group and an ethylenic unsaturated group or silane coupling agent as well as a process for production of a cross-linked product of the modified α-olefin polymer. The modified α-olefin polymer in the present invention has appropriate molecular weight distribution and composition distribution, is good in low temperature coating performance required for a reactive hot melt adhesive because of low melting temperature, has high reactivity, compatibility and adhesiveness as compared to conventional unmodified α-olefin polymers, and also it generates no decomposed gas because of a polyolefin-based material and has good adhesiveness to polyolefins. | 03-26-2009 |
| 20090124770 | Supported Metal Alkyl Compound and Process for the Polymerization of Olefins in Its Presence - The present invention relates to pulverulent solids obtainable by reaction of a metal alkyl compound of a divalent or higher-valent metal and a finely divided support which on its surface bears functional groups which can form a chemical bond between the metal atom of the metal alkyl compound and the surface of the support, wherein the particles of the finely divided support have particle diameters of less than 1000 nm and less than 5% by weight of the metal alkyl compound is extractable in a single extraction of the pulverulent solid with 20 ml of heptane per gram of solid at 50° C. In addition, the invention relates to a process for preparing the pulverulent solids, a catalyst composition for the polymerization of olefins which comprises the pulverulent solids and polymerization processes using the catalyst composition. | 05-14-2009 |
| 20090137757 | Polar group-containing olefin copolymer, process for preparing the same, thermoplastic resin composition containing the copolymer, and uses thereof - A polar group-containing olefin copolymer having excellent adhesion properties to metals or polar resins and excellent compatibility therewith, a process for preparing the copolymer, a thermoplastic resin composition containing the copolymer, and uses thereof. The polar group-containing olefin copolymer comprises a constituent unit derived from an □-olefin of 2 to 20 carbon atoms, and a constituent unit derived from a straight-chain, branched or cyclic polar group-containing monomer having at the end a polar group such as a hydroxyl group or an epoxy group and/or a constituent unit derived from a macromonomer having at the end a polymer segment obtained by anionic polymerization, ring-opening polymerization or polycondensation. The polar group-containing olefin copolymer can be prepared by polymerizing the α-olefin with the polar group-containing monomer and/or the macromonomer in the presence of a metallocene catalyst. The polar group-containing olefin copolymer and the thermoplastic resin composition containing the copolymer are used for films, sheets, modifiers, building/civil engineering materials, automobile exterior trim, electric/electronic parts, coating bases, compatibilizing agents, etc. | 05-28-2009 |
| 20090253875 | RARE EARTH METAL COMPLEX, POLYMERIZATION CATALYST AND METHOD FOR PRODUCING POLYMER - A rare earth metal complex represented by the formula (1): | 10-08-2009 |
| 20090259007 | Process for the polymerization of olefins - A multistep process comprising the following steps:
| 10-15-2009 |
| 20090270569 | ACTIVATORS FOR THE HOMO-OR CO-POLYMERISATION OF ALPHA-OLEFINS WITH HOMOGENEOUS METALLOCENE CATALYST SYSTEMS - The present invention discloses a class of metallocene catalyst systems suitable for the homogeneous polymerisation of ethylene or alpha olefins that does not require the addition of aluminoxane or perfluorophenylborates as activating agent. | 10-29-2009 |
| 20100036067 | CATALYST SYSTEM FOR OLEFIN POLYMERIZATION COMPRISING TRIOXASILOCANE AND METHOD FOR OLEFIN POLYMERIZATION USING THE SAME - The present invention relates to a catalyst system for olefin polymerization and a method for olefin polymerization using the same. More particularly, the present invention relates to a Ziegler-Natta catalyst system for olefin polymerization comprising a transition metal compound as a main catalyst component, an organic metal compound as a cocatalyst component, and a cyclic organosilane compound, trioxasilocane as an external electron donor, and a method for olefin polymerization using the same. According to the present invention, a polyolefin having improved various properties such as polymerization activity, melt-flow ability, isotacticity, molecular weight distribution and apparent density can be produced. | 02-11-2010 |
| 20100063228 | TRANSITION METAL COMPLEX, PROCESS FOR PRODUCING THE SAME, AND USE - A transition metal complex of the following formula (1): | 03-11-2010 |
| 20100081775 | UZM-35 Aluminosilicate Zeolite, Method of Preparation and Processes Using UZM-35 - A new family of crystalline aluminosilicate zeolites has been synthesized. These zeolites are represented by the empirical formula. | 04-01-2010 |
| 20100093958 | CATALYST ACTIVATORS, PROCESSES FOR MAKING SAME, AND USE THEREOF IN CATALYSTS AND POLYMERIZATION OF OLEFINS - Compositions useful for activating catalysts for olefin polymerization are-provided. The compositions are derived from at least: a) compound derived from at least (i) carrier having at least one pair of hydrogen bonded hydroxyl groups, (ii) organoaluminum compound, and (iii) Lewis base, such that each of a majority of aluminum atoms in the organoaluminum compound forms chemical bonds with at least two oxygen atoms from the at least one pair of hydrogen bonded hydroxyl groups; and b) Bronsted acid, wherein the molar ratio of the Bronsted acid to the organoaluminum compound is less than or equal to about 2:1. | 04-15-2010 |
| 20100099834 | Transition Metal Catalyst Systems and Formation Thereof - Catalyst systems and methods of forming the catalyst systems are described herein. The methods generally include contacting a support material with an activator to form a support composition, contacting a component with at least a portion of an aluminum containing compound including TIBAl, wherein the component is selected from the support composition, the transition metal catalyst compound and combinations thereof and contacting the support composition with a transition metal catalyst compound to form a supported catalyst system. | 04-22-2010 |
| 20100113718 | Super-Solution Homogeneous Propylene Polymerization and Polypropylenes Made Therefrom - This invention relates to processes for producing an isotactic propylene homopolymer having more than 15 and less than 100 regio defects (sum of 2,1-erythro and 2,1-threo insertions and 3,1-isomerizations) per 10,000 propylene units; a weight-averaged molecular weight of 35000 g/mol or more; a peak melting temperature of greater than 149° C.; an mmmm pentad fraction of 0.85 or more; a heat of fusion of 80 J/g or more; and a peak melting temperature minus peak crystallization temperature (Tmp−Tcp) of less than or equal to (0.907 times Tmp) minus 99.64 (Tmp−Tcp<(0.907×Tmp)−99.64), as measured in ° C. on the homopolymer having 0 wt % nucleating agent. | 05-06-2010 |
| 20100174038 | PROCESS FOR PRODUCING SOLID CATALYST COMPONENT PRECURSOR FOR OLEFIN POLYMERIZATION - A production process is provided for an olefin polymerization catalyst component precursor, including the step of adding an organomagnesium compound to a solution containing a Si—O bond-containing silicon compound, a titanium compound represented by a defined formula, and a solvent, in an amount of 2.5 to 90 mol, per one liter of the solvent, of magnesium atoms contained in the organomagnesium compound added. Also provided are a production process of an olefin polymerization catalyst component using the above precursor; a production process of an olefin polymerization catalyst using the above catalyst component; and a production process of an olefin polymer using the above catalyst. | 07-08-2010 |
| 20100261860 | RACEMOSELECTIVE SYNTHESIS OF ANSA-METALLOCENE COMPOUNDS, ANSA-METALLOCENE COMPOUNDS, CATALYSTS COMPRISING THEM, PROCESS FOR PRODUCING AN OLEFIN POLYMER BY USE OF THE CATALYSTS, AND OLEFIN HOMO- AND COPOLYMERS - A metallocene compound with the 4- and 7-positions on the indenyl moiety possessing large aromatic substituents is prepared in accordance with a method which produces substantially 100 percent racemic isomer. Advantageously, polymerisation catalysts including the metallocene of the invention provide superior olefin polymerisation results. | 10-14-2010 |
| 20100267908 | Catalyst for olefin polymerization, process for producing olefin polymer, olefin copolymer, novel transition metal compound, and process for producing transition metal compound - [Task] To provide a catalyst for olefin polymerization having an excellent olefin polymerization performance and capable of producing a polyolefin with excellent properties. | 10-21-2010 |
| 20100298511 | METALLOCENE CATALYSTS AND THEIR USE IN POLYMERIZATION PROCESSES - A process for polymerizing olefin(s) utilizing a cyclic bridged metallocene catalyst system to produce polymers with improved properties is provided. The catalyst system may include a cyclic bridged metallocene, L | 11-25-2010 |
| 20110003950 | CATALYST COMPONENT FOR POLYMERIZATION OF ETHYLENE AND PROCESS FOR PRODUCING ETHYLENE POLYMER (2) - The object is to provide a catalyst component for ethylene polymerization which can produce an ethylene polymer of high molecular weight which has substantially only an ethyl branch, and a process for producing the catalyst component for ethylene polymerization which can produce an ethylene polymer of high molecular weight which has substantially only an ethyl branch. A catalyst component for polymerization of ethylene obtained by contacting the following components (A), (B), (C) and (D): component (A): a meso-metallocene compound, component (B): a compound which ionizes a metallocene compound to form an ionic complex, component (C): an organoaluminum compound, and component (D): an electron donating compound, and a process for producing the ethylene polymer by polymerizing ethylene in the presence of the above catalyst component for ethylene polymerization. | 01-06-2011 |
| 20110077369 | PROCESS FOR PREPARING OLEFIN POLYMER USING MIXED CATALYST - [Problem] To efficiently obtain an α-olefin polymer having a high melting point and a high molecular weight. [Solution to Problem] The process for preparing an olefin polymer of the present invention is a process for preparing an olefin polymer, comprising polymerizing at least one monomer selected from α-olefins of 2 or more carbon atoms, wherein the polymerization is carried out at a temperature of not lower than 40° C. in the presence of a catalyst comprising a transition metal compound component (A) which comprises two or more kinds of transition metal compounds (a) represented by the following formula [A1] and an organometallic compound component (B) which comprises an organometallic compound (b), propylene is contained in the monomer, and the olefin polymer is an olefin polymer whose weight-average molecular weight (Mw) and number-average molecular weight (Mn), as determined by gel permeation chromatography (GPC), satisfy the relationship of 1≦(Mw/Mn)≦3, and which has a melting point (Tm), as determined by DSC, of not lower than 150° C. and an intrinsic viscosity ([η]) of not less than 1.5 dl/g. | 03-31-2011 |
| 20110105704 | Sterically Emcumbered Bidentate and Tridentate Naphthoxy-Imine Metallic Complexes - The present invention discloses post-metallocene complexes based on sterically encumbered bi- and tri-dentate naphthoxy-imine ligands. It also relates to the use of such post-metallocene complexes in the oligomerisation of ethylene to selectively prepare vinyl-end capped linear alpha-olefins. | 05-05-2011 |
| 20110136997 | PREPARATION OF MULTIMODAL, HIGH DENSITY, ETHYLENE HOMOPOLYMER BARRIER RESINS AND FILMS - Disclosed is a multimodal, high density, homopolyethylene barrier resin. The resin is preferably made by a multistage process. The process comprises a first stage in which ethylene is homopolymerized in the presence of a Ziegler-Natta catalyst, organoaluminum cocatalyst, alkoxysilane modifier, and hydrogen. The reaction mixture from the first stage is devolatilized to remove all or substantially all of the hydrogen. The polymerization continues in a second stage wherein ethylene is added to the devolatilized reaction mixture to produce the barrier resin. The barrier resin provides films with improved barrier properties. | 06-09-2011 |
| 20110213108 | PROCESS FOR THE PREPARATION OF AN UNSUPPORTED, SOLID METALLOCENE CATALYST SYSTEM AND ITS USE IN POLYMERIZATION OF OLEFINS - Improved process for the preparation of an unsupported, heterogeneous olefin polymerization catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC) or of an actinide or lanthanide in the form of solid particles comprising the steps of a) preparing a solution of catalyst components, including an aluminoxane, a compound being effective to form stable, liquid clathrates with aluminoxane and an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, in a hydrocarbon solvent, yielding a two phase system with an upper solvent layer, which is separated, b) preparing a liquid/liquid emulsion system comprising a continuous phase in which said solution of the catalyst components forms a dispersed phase in the form of droplets, c) solidifying said dispersed phase to convert said droplets to solid particles and optionally recovering said particles to obtain said catalyst system, the catalysts system itself and its use for olefin polymerization. | 09-01-2011 |
| 20110218308 | ETHYLENE -a-OLEFIN COPOLYMER AND MOLDED OBJECT THEREOF - The purpose of the invention is to provide an ethylene-α-olefin copolymer, which has a high melt tension but a small neck-in, and a molded object produced by extrusion molding of the copolymer. An ethylene-α-olefin copolymer having a monomer unit based on ethylene and a monomer unit based on an α-olefin having 3 to 20 carbon atoms, which has a melt flow rate (MFR) of 0.1 to 100 g/10 min, a density (d) of 850 to 940 kg/m | 09-08-2011 |
| 20110263803 | PROCESS FOR PRODUCING CONJUGATED DIENE POLYMER - Disclosed is a process for producing a conjugated diene polymer having a very high content of cis-1,4 structures by using an yttrium compound-containing catalyst that is relatively easy to handle and has a high activity. Specifically disclosed is a process for producing a conjugated diene polymer containing cis-1,4 structures at a ratio of 99% or higher, which is characterized by polymerizing a conjugated diene in the presence of a catalyst produced from (A) a specific yttrium compound, (B) an ionic compound consisting of a non-coordinating anion and a cation, and (C) an organoaluminum compound. | 10-27-2011 |
| 20110306741 | SYNTHESIS OF SUBSTITUTED TETRAHYDROINDENYL COMPLEXES - This invention relates to the synthesis of substituted tetrahydroindenyls and the use of the synthesised complexes in the homo- and co-polymerisation of ethylene and alpha-olefins. | 12-15-2011 |
| 20120123070 | Catalytic Systems Made of a Complex of Rare Earths For Stereospecific Polymerisation Of Conjugated Dienes - La present invention relates to a multi-component catalytic system that can be used for the cis-1,4 stereospecific polymerization of conjugated dienes. The system is based on: | 05-17-2012 |
| 20120309913 | PROCESS FOR THE PREPARATION OF AN UNSUPPORTED, SOLID METALLOCENE CATALYST SYSTEM AND ITS USE IN POLYMERIZATION OF OLEFINS - Process for the preparation of an unsupported, heterogeneous olefin polymerization catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) in the form of solid particles comprising the steps of a) preparing a solution (A) comprising ai) an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, a | 12-06-2012 |
| 20120329965 | ADVANCED TRANSITION METAL CATALYTIC SYSTEMS IN TERMS OF COMONOMER INCORPORATIONS AND METHODS FOR PREPARING ETHYLENE HOMOPOLYMERS OR COPOLYMERS OF ETHYLENE AND A-OLEFINS USING THE SAME - Provided is a homogeneous catalytic system for use in preparing an ethylene homopolymer or a copolymer of ethylene and α-olefin, and more particularly a Group 4 transition metal compound in which a cyclopentadienyl derivative 3,4-positions of which are substituted with alkyls and an electron-donating substituent are crosslinked around a Group 4 transition metal. Also provided is a method of preparing an ethylene homopolymer or a copolymer of ethylene and α-olefin, having high molecular weight, under high-temperature solution polymerization conditions using the catalytic system including such a transition metal compound and a co-catalyst composed of an aluminum compound, a boron compound or a mixture thereof. The catalyst according to present invention has high thermal stability and enables the incorporation of α-olefin, and is thus effective in preparing an ethylene homopolymer or a copolymer of ethylene and α-olefin, having various properties, in industrial polymerization processes. | 12-27-2012 |
| 20130245213 | Catalysts For Producing Polyaplha-Olefins - This invention is directed to new mono-cyclopentadienyl (“mono-Cp”) metallocene catalyst compounds useful for producing high viscosity PAOs with narrow molecular weight distribution and good shear stability. Specifically, this invention relates to a group of bridged mono-Cp catalysts wherein, in an embodiment of the invention, the aromatic ring structure is substituted with: 1) at least one phenyl group, 2) at least one alkyl group, and 3) at least one other group, such as a hydrocarbyl group, a heteroatom, or a heteroatom-containing group. | 09-19-2013 |
| 20130245214 | ACTIVATING SUPPORTS - Activating supports may be suitably prepared by (a) combining (i) fluorine-containing compounds having a reactive group and (ii) an organometallic compound, (b) addition of a porous mineral oxide support material, (c) heating the functionalized support from step (b) under an inert gas and then under an atmosphere comprising oxygen, and (d) recovering the activating support. The preferred fluorine-containing compounds have the formula: R(Fn)-X wherein R is hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl with up to 20 non-hydrogen atoms, n is 1-41, X is OH, SH or NR′ | 09-19-2013 |
| 20130253154 | METHOD FOR PREPARING SUPPORTED HYBRID METALLOCENE CATALYST - The present invention relates to a preparation method of a metallocene catalyst. More particularly, the present invention relates to a preparation method of a supported hybrid metallocene catalyst, including the steps of treating a support having a water content of 4 to 7% by weight with trialkyl aluminum at a predetermined temperature; supporting alkyl aluminoxane on the support; and supporting a metallocene compound on the alkyl aluminoxane-supported support. According to the present invention, it is possible to prepare a supported hybrid metallocene catalyst which shows a high activity in the polymerization of olefins and enables the preparation of polyolefins having a high bulk density, by a simple process. | 09-26-2013 |
| 20130289230 | PROCESS FOR THE PREPARATION OF A SOLID METALLOCENE CATALYST SYSTEM AND ITS USE IN POLYMERISATION OF OLEFINS - Process for the preparation of a solid olefin polymerisation catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) in the form of solid particles comprising the steps of a) preparing a solution (A) comprising ai) a transition metal compound of Formula (I) LmRnMXq (I) wherein “M” is a transition metal of anyone of the groups 3 to 10 of the periodic table (IUPAC 2007), preferably a transition metal of anyone of the groups 4 to 6 of the periodic table (IUPAC 2007), more preferably titanium (Ti), zirconium (Zr) or hafnium (Hf), i.e. zirconium (Zr) or hafnium (Hf), each “X” is independently a monovalent σ-ligand, each “L” is independently an organic ligand which coordinates to the transition metal (M), “R” is a bridging group linking said organic ligands (L), “m” is 2 or 3, preferably 2, “n” is 0, 1 or 2, preferably 1, “q” is 1, 2 or 3, preferably 2, m+q is equal to the valency of the transition metal (M), a2) a cocatalyst comprising an element of group 13 of the Periodic Table (IUPAC 2007), preferably a cocatalyst (Co) comprising a compound of AI and a3) a solvent (A-1), b) preparing a liquid/liquid emulsion system by dispersing the solution (A) in a solvent (B) wherein bi) the solvent (B) constitutes the continuous phase of the emulsion and comprises a nonreactive fluorinated synthetic oil like a perfluoropolyether, a polytrichlorofluoroethylene, a fluorosilicone, or combinations thereof, having a viscosity at 20° C. of at least 10 cSt according to ASTM D445 b2) the solution (A) constitutes in the form of droplets the dispersed phase and b3) the transition metal compound of formula (I) and the cocatalyst (Co) are present in the droplets, c) solidifying said dispersed phase to convert said droplets to solid particles and d) optionally recovering said particles to obtain said catalyst system. | 10-31-2013 |
| 20130310528 | Novel Catalysts and Methods of Use Thereof to Produce Vinyl Terminated Polymers - This invention relates to a homogenous process for making a vinyl terminated propylene polymer, wherein the process comprises: contacting, propylene, under polymerization conditions, with a catalyst system comprising an activator and at least one metallocene compound, where the metallocene compound is represented by the formula: | 11-21-2013 |
| 20140018506 | BRIDGED METALLOCENE CATALYSTS - A solid, particulate catalyst comprising: (i) a complex of formula (I) wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R | 01-16-2014 |
| 20140031504 | CATALYST SYSTEM - A catalyst system suitable for the polymerisation of olefins, said system comprising (a) a transition metal compound or lanthanide metal compound (b) a cocatalyst and (c) at least one porous support material characterised in that the porous support material has been pretreated with a halogen-containing organometallic compound, in particularly with a fluorine-containing organometallic compound. The catalyst system is particularly suitable for the preparation of polymers having broad molecular weight distributions from the polymerisation of olefins in the presence of a single site catalyst. | 01-30-2014 |
| 20140094577 | Catalyst Compositions Containing Transition Metal Complexes With Thiolate Ligands - The present invention discloses catalyst compositions employing transition metal complexes with a thiolate ligand. Methods for making these transition metal complexes and for using such compounds in catalyst compositions for the polymerization of olefins also are provided. | 04-03-2014 |
| 20140121341 | Supported Metallocene Catalyst Systems and Methods of Preparation Thereof - This invention relates to a process to produce a supported metallocene catalyst system, the process comprising: (i) contacting a support material with an alkyl aluminum compound to provide an alkyl aluminum treated support material; wherein the alkyl aluminum compound is represented by the formula: R | 05-01-2014 |
| 20140121342 | METHOD FOR PRODUCING VERY-HIGH OR ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE - The field of the invention relates generally to a method for preparing very-high or ultra-high molecular weight polyethylene. More particularly, the present invention related to a method of preparing very-high or ultra-high molecular weight polyethylene using a supported catalyst comprising a support, an activator and a metal-ligand complex, as well as the catalyst itself. The present invention additionally relates to a method of using a supported catalyst comprising a support, an activator and co-supported metal-ligand complexes to obtain a bi-modal molecular weight distribution of polyethylene. | 05-01-2014 |
| 20140128557 | Supported Salan Catalysts - Supported Salan catalysts, a process comprising contacting one or more olefins with a catalyst system comprising an activator and a Salan catalyst disposed on a support, and polymers produced by the process. | 05-08-2014 |
| 20140171605 | POLYMERISATION OF ETHYLENE IN THE PRESENCE OF A SILYLCHROMATE BASED CATALYST - The invention relates to a process for the production of high density polyethylene by polymerisation of ethylene in the presence of a silylchromate based catalyst and a reducing agent is characterized in that the reducing agent comprises the reaction mixture of an alkyl aluminium compound and/or boron compound and a nitrogen containing compound. The alkyl aluminium compound is an organo aluminium compound having the formula AlR | 06-19-2014 |
| 20140179885 | Method of Preparing Ethylene-alpha-Olefin-Diene Copolymer - The present invention relates to a method of preparing an ethylene-α-olefin-diene copolymer and an ethylene-α-olefin-diene copolymer prepared thereby, by using a transition metal compound based on a cyclopenta[b]fluorenyl group as a catalyst. | 06-26-2014 |
| 20140221584 | CATALYSTS - A racemic complex of formula (I), wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from —R′ | 08-07-2014 |
| 20140329979 | NOVEL POLYMERS - Novel copolymers of ethylene and α-olefins are provided having (a) a density in the range 0.900-0.940 g/cm | 11-06-2014 |
| 20140336342 | CHROMIUM CATALYSTS FOR OLEFIN POLYMERIZATION - Mineral oil is added to a supported chromium catalyst in amounts which maintain a free flowing particulate material. Chromium catalysts so treated, provide polyethylene in a gas phase ethylene polymerization process with reduced reactor fouling or static. | 11-13-2014 |
| 20150025208 | Metallocenes and Catalyst Compositions Derived Therefrom - This invention relates to a novel group 4 transition metal metallocene catalyst compound that is asymmetric having two non-identical indenyl ligands with substitution at R | 01-22-2015 |
| 20150025209 | Substituted Metallocene Catalysts - This invention relates to novel bridged a hafnium transition metal metallocene catalyst compounds having two indenyl ligands substituted at the 4 positions with a C | 01-22-2015 |
| 20150025210 | Process Using Substituted Metallocene Catalysts and Products Therefrom - This invention relates to a process to produce propylene polymer using a bridged hafnium transition metal metallocene catalyst compounds having two indenyl ligands substituted at the 4 positions with a C | 01-22-2015 |
| 20150031844 | NON-SUPPORTED HETEROGENEOUS POLYOLEFIN POLYMERIZATION CATALYST COMPOSITION AND METHOD FOR PREPARING SAME - Disclosed is a metallocene catalyst composition for polyolefin polymerization. The metallocene catalyst composition is in a non-supported, heterogeneous form where an ansa-metallocene is bound to a cocatalyst without a support. Also, a method for preparing the catalyst composition, and a method for preparing polyolefin using the catalyst are disclosed. Capable of readily controlling microstructures of olefin polymers in addition to having high catalytic activity, the non-supported heterogeneous catalyst composition can be applied to the preparation of polyolefin polymers at high yield without altering preexisting processes. | 01-29-2015 |
| 20150337063 | Polymerization Process for Producing Ethylene Based Polymers - The instant invention provides a polymerization process for producing ethylene based polymers. | 11-26-2015 |
| 20150344595 | CATALYST - A catalyst in solid particulate form free from an external carrier material comprising
| 12-03-2015 |
| 20150344596 | CATALYSTS - A catalyst comprising
| 12-03-2015 |
| 20150361189 | OLEFIN POLYMERIZATION CATALYST AND PREPARATION AND APPLICATION THEREOF - The present invention relates to preparation and application of an olefin polymerization catalyst. The main catalyst is composed of a carrier, a transition metal halide, and an organic alcohol compound. The transition metal halide is obtained by in-situ reaction between titanate and silicon halide. The molar ratio of the carrier to the transition metal halide to the organic alcohol compound is 1 to 0.01-20 to 0.1-6. The molar ratio of the titanate to the silicon halide is 1 to 0.5-2. The co-catalyst is an organo-aluminum compound. The molar ratio of the transition metal halide in the main catalyst to the co-catalyst is 1 to 30-500. Particles of the catalyst are good in morphology and are in a spherical shape. The catalyst has high activity and the polymer obtained by using the catalyst has a high molecular weight. The catalyst is applicable to a slurry method, a vapor phase polymerization process, or a combined polymerization process. The preparation method thereof is simple, has low requirements on devices, and produces little pollution on the environment. | 12-17-2015 |
| 20160002369 | CATALYSTS - An asymmetric complex of formula (I) | 01-07-2016 |
| 20160009838 | METALLOCENE COMPOUND, CATALYST FOR OLEFIN POLYMER, METHOD FOR PRODUCING OLEFIN POLYMER, AND OLEFIN POLYMER | 01-14-2016 |
| 20160168281 | A METALLOCENE COMPOUND, A CATALYST COMPOSITION COMPRISING THE SAME, AND A METHOD OF PREPARING AN OLEFINIC POLYMER BY USING THE SAME (AS AMENDED) | 06-16-2016 |
| 20160200838 | SOLID SINGLE SITE CATALYSTS WITH HIGH POLYMERISATION ACTIVITY | 07-14-2016 |
| 20170233504 | METHOD FOR MANUFACTURING CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER, RUBBER COMPOSITION, AND TIRE | 08-17-2017 |
