Entries |
Document | Title | Date |
20080227938 | HYDROSILYLATION INHIBITOR, HYDROSILYLATION CATALYST COMPOSITION, AND CURABLE COMPOSITION - A hydrosilylation inhibitor comprising a reaction product of (1) a titanium compound having an alkoxy group in its ligand, and (2) an organosilicon compound having at least one hydrogen atom bonded to silicon atom per molecule is provided. This hydrosilylation inhibitor exhibits inhibitory activity for catalytic activity of a PGE (platinum group element)-bearing hydrosilylation catalyst in an oxygen atmosphere of up to 100 ppm and/or a moisture atmosphere of up to 100 ppm. By using the present invention, catalytic function of the hydrosilylation catalyst is reliably inhibited in the absence of oxygen and moisture while the same catalytic function is easily provided in the presence of the oxygen or the moisture. | 09-18-2008 |
20080249264 | Method For Producing Highly Reactive Isobutylene Homo-Or Copolymers from Technical Flows of C4-Hydrocarbon Using Bronsted Acid Catalyst Complexes - Preparation of highly reactive isobutene homo- or copolymers with M | 10-09-2008 |
20080287618 | Solid State Properties Of Polyethylene Prepared With Tetrahydroindenyl-Based Catalyst System - The present invention discloses articles having excellent dimensional stability, solid state mechanical properties and barrier properties that are produced with a polyethylene resin prepared with a catalyst system based on a bridged bisindenyl ligand. | 11-20-2008 |
20080312392 | PROCESS FOR PREPARING A POLYMER FROM ALLYLOXYTRIFLUOROPROPENES - A process for preparing a polymer comprising the step of: polymerizing:
| 12-18-2008 |
20090005523 | Process for the Preparation of Atactic 1-Butene Polymers - A process for obtaining atactic 1-butene polymer optionally containing at least one comonomer selected from ethylene, propylene or an alpha-olefin of formula CH | 01-01-2009 |
20090012247 | Process for the preparation of an olefin polymerisation catalyst - This invention relates to a process for the preparation of an olefin polymerisation catalyst, to the use of the catalyst in olefin polymerisation and to the catalyst and polymers obtained. In particular, the invention relates to the preparation of a catalyst comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC) by a semi-continuous or continuous process. | 01-08-2009 |
20090043057 | Transition Metal Compound, Catalyst for Olefin Polymerization, and Process for Producing Olefin Polymer - Provided is a transition metal compound novel and useful as a catalyst component for olefin polymerization, a catalyst for olefin polymerization containing the transition metal compound, and a process for producing an olefin polymer using the catalyst for polymerization. The transition metal is characterized by being represented by the following general formula [I]: | 02-12-2009 |
20090062487 | 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 polyethylene characterized by good incorporation of the α-olefin and low long-chain branching. The process is capable of forming high-molecular-weight polyethylene and has good hydrogen sensitivity. | 03-05-2009 |
20090062488 | 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 polyethylene characterized by good incorporation of the α-olefin and moderate long-chain branching. The process is capable of forming high molecular weight polyethylene and has good catalyst activity. | 03-05-2009 |
20090062489 | 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 active catalyst and provides polyethylene characterized by a high level of long-chain branching. | 03-05-2009 |
20090062490 | Olefin polymerization process - A slurry process for polymerizing ethylene is disclosed. The process comprises polymerizing ethylene in the presence of an α-olefin, hydrogen, and a catalyst comprising an activator and a supported, dimethylsilyl-bridged bis(indenoindolyl)zirconium complex. The process has high catalyst activity and produces polyethylene having a broad molecular weight distribution. | 03-05-2009 |
20090069516 | CATALYST SYSTEMS AND THEIR USE FOR METATHESIS REACTIONS - Novel catalyst systems for metathesis reactions, in particular for the metathesis of nitrile rubber, which contain a specific salt additive in addition to the metathesis catalyst are provided. | 03-12-2009 |
20090082531 | Novel copolymers - A copolymer of ethylene and an alpha-olefin, said copolymer having a
| 03-26-2009 |
20090118447 | Impact Copolymer in Single Reactor - This invention relates to the field of impact copolymers and their preparation in a single reactor. | 05-07-2009 |
20090124769 | Process for producing cycloolefin addition polymer, catalyst for addition polymerization of cycloolefin, and transition metal compound - A process for producing a cycloolefin addition polymer comprising addition-polymerizing a cycloolefin in the presence of a catalyst comprising a combination of a specific transition metal compound of Group 4 of the Periodic Table, with an organoaluminum oxy compound, and/or a compound capable of reacting with the Group 4 transition metal compound to form an ion pair. The specific group 4 transition metal compound preferably has a structure such that the group 4 transition metal is bonded to a cyclopentadienyl ring in an η | 05-14-2009 |
20090137756 | Bulk density promoting agents in a gas-phase polymerization process to achieve a bulk particle density - Disclosed herein is a gas phase polymerization process including the steps of passing a recycle stream through a fluidized bed in a gas phase fluidized bed reactor in the presence of a bulk density promoting agent, wherein the bulk density promoting agent is of a saturated hydrocarbon and/or a non-polymerizable unsaturated hydrocarbon having 6 or more carbon atoms; polymerizing at least one alpha-olefin monomer in the presence of a catalyst to produce an alpha-olefin polymer; and controlling an amount of the bulk density promoting agent in the reactor such that a bulk density of the alpha-olefin polymer discharged from the reactor is greater than or equal to about 480 kg/m | 05-28-2009 |
20090143550 | Copolymers of vinyl-and allylsilanes - Ethylene and allyl- or vinylsilanes are efficiently copolymerized by certain late transition metal complexes containing selected bidentate or tridentate ligands. The resulting novel polymers may be crosslinked by moisture when vinylsilane contains groups bound to silicon which are hydrolyzable. The polymers are useful for wire coating, crosslinked foams, pipes, and other uses. | 06-04-2009 |
20090149613 | Crystallizable Propylene Copolymers - A propylene copolymer is described comprising at least 70 mol % of units derived from propylene, up to 30 mol % of units derived from a combination of ethylene, at least one alpha-olefin having from 4 to 10 carbon atoms, such that the molar ratio of ethylene-derived units to said alpha-olefin-derived units in said combination is from about 1:9 to about 9:1, and from 0 to about 3 mol % of units derived from a copolymerizable diene. The copolymer has isotactically arranged propylene derived sequences, an overall heat of fusion as determined by differential scanning calorimetry (DSC) of less than 65 J/g, a second melting point as determined by DSC of less than 100° C., less than one 1,3 insertion error per 1000 carbon atoms and a weight average molecular weight as determined by gel permeation chromatography (GPC) of from about 100,000 to about 500,000. | 06-11-2009 |
20090186995 | Production of Propylene-Based Polymers - In a process for producing a propylene-based olefin homopolymer or copolymer, a monomer composition comprising propylene is contacted with a polymerization catalyst system under homogeneous polymerization conditions (such as solution, supersolution or supercritical conditions), wherein the polymerization catalyst system includes an activator and a bridged bis-indenyl transition metal (group 4) compound substituted with a carbazole (unsubstituted or substituted) at the 4 position. | 07-23-2009 |
20090203858 | PROCESS FOR PREPARING POLYMERS FROM 3-METHYLBUT-1-ENE - The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such copolymers, the polymerization being performed in the presence of a catalyst which comprises at least one cyclopentadienyl group. | 08-13-2009 |
20090221772 | Metallocene Compounds - A bridged metallocene compound of formula (I) wherein: M is a transition metal; X, is a hydrogen atom, a halogen atom, or a hydrocarbon group optionally containing hetematoms; L is a divalent bridging group; R | 09-03-2009 |
20090234084 | Metallocene Compounds - A metallocene compound of formula (I) wherein M is zirconium titanium or hafnium; X is hydrogen, halogen or an hydrocarbon group; R | 09-17-2009 |
20090264604 | Metallocene Complex and Polymerization Catalyst Composition Containing the Same - Disclosed are a metallocene complex represented by the general formula (I), (II) or (III), and a polymerization catalyst composition containing such a metallocene complex. In the formulae (I), (II) and (III), M represents a lanthanoid element, scandium or yttrium; Cp | 10-22-2009 |
20090264605 | TECHNIQUE FOR SELECTING POLYMERIZATION MODIFIERS CORSS REFERENCE STATEMENT - A combinatorial method for identifying a catalyst composition for use in the homogeneous addition polymerization of an olefin monomers, said catalyst composition comprising a transition metal compound, a cocatalyst and a polymerization modifier, as well as catalyst compositions and improved olefin polymerization processes resulting therefrom. | 10-22-2009 |
20090264606 | PROCESS FOR THE MANUFACTURE OF BRANCHED POLYPROPYLENE - A process for manufacturing a branched polypropylene, said branched polypropylene having a branching index g′ of less than 1.00, the process comprising the step of polymerizing propylene and optionally one or more other comonomers under non-supercritical conditions in a reaction vessel, wherein:
| 10-22-2009 |
20090275711 | Olefin polymerization process - A slurry process for polymerizing ethylene is disclosed. The process comprises polymerizing ethylene in a first reactor in the presence of hydrogen and a catalyst comprising an activator and a supported dimethylsilyl-bridged indeno[1,2-b]indolyl zirconium complex to produce an ethylene homopolymer, removing some of the unreacted hydrogen, and reacting the homopolymer slurry in a second reactor with ethylene and a C | 11-05-2009 |
20090275712 | Metallocene Compounds - A bridged metallocene compound of formula (I) | 11-05-2009 |
20090292087 | 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 a catalyst comprising an activator and a supported dialkylsilyl-bridged bis(indeno[1,2-b]indolyl)zirconium complex. The polyethylene, which has an M | 11-26-2009 |
20090306317 | Process for the Preparation of a Silylchromate Catalyst - The invention is directed to a process for the preparation of a silylchromate catalyst comprising the steps of:
| 12-10-2009 |
20100029870 | INTERNAL DONOR FOR OLEFIN POLYMERIZATION CATALYSTS - Disclosed are 1,8-naphthyl diaryloates, methods of making 1,8-naphthyl diaryloates, methods of using 1,8-naphthyl diaryloates, solid titanium catalyst components, catalyst systems containing solid titanium catalyst components, methods of making solid titanium catalyst components, and polymerization methods. The solid titanium catalyst components contain a 1,8-naphthyl diaryloate internal electron donor compound. The catalyst system can contain a solid titanium catalyst component, an organoaluminum compound, and an organosilicon compound. | 02-04-2010 |
20100029871 | Catalyst System, Process for Olefin Polymerization, and Polymer Compositions Produced Therefrom - Provided are catalyst systems, processes for polymerizing one or more olefins, polymers resulting therefrom, and articles prepared from such polymers. The processes comprise contacting under polymerization conditions one or more olefin monomers, preferably propylene, with a catalyst system comprising a transition metal compound and an activator of the formula (1) or (2) as described herein. The polymer compositions described herein exhibit advantageously narrow composition distributions and high melting points in comparison to conventional polymers having the same comonomer content. The polymers described herein exhibit improved properties, e.g., pellet stability, impact properties, heat seal properties, and structural integrity in film and fabricated parts applications. | 02-04-2010 |
20100036066 | ALPHA-OLEFIN POLYMER AND PROCESS FOR PRODUCTION THEREOF - Provided is an α-olefin polymer having an excellent balance between a molecular weight and a melting point, which is a polymer of one or more kinds of α-olefins having 20 to 40 carbon atoms, and which meets the following requirements (1) to (4): (1) the α-olefin polymer has a molecular weight distribution (Mw/Mn) determined from its weight average molecular weight (Mw) and number average molecular weight (Mn) in terms of polystyrene measured by a GPC method of 2 or less, and has an Mw of 5,000 or less; (2) measurement of a melting point (Tm) of the α-olefin polymer with DSC shows one melting peak, a melting heat absorption (AH) calculated from an area of the melting peak is 20 J/g or more, and the melting peak has a half value width of 10° C. or less; (3) when the Mw falls within a range of 1,000 to 5,000 and an average number of carbon atoms (Cn) of the α-olefins falls within a range of 20 to 40, the Mw, the Cn, and the Tm measured with the DSC satisfy the relationship, 0.0025×Mw+(Cn×3.3812−29.5)≦Tm≦0.0025×Mw+((Cn+1)×3.3812−29.5); and (4) a stereoregularity index [M | 02-11-2010 |
20100056737 | Process for manufacturing high to ultra high molecular weight polymers using novel bridged metallocene catalysts - The present invention relates to a process of manufacturing high, very high, and ultra high molecular weight polymers comprising predominantly ethylene monomers. Ethylene is reacted in the presence of a catalyst system to produce a polymer having a viscosimetrically-determined molecular weight of at least 0.7×10 | 03-04-2010 |
20100087607 | IRON COMPLEXES AND THEIR USE IN POLYMERIZATION PROCESSES - Specific iron complexes (A), a catalyst system for polymerization of olefins comprising at least one metal complex (A) and/or (A′), a prepolymerized catalyst system, the use of these catalyst systems for the polymerization of olefins, and a process for the preparation of polyolefins by polymerization or copolymerization of olefins in the presence of one of the described catalyst systems. | 04-08-2010 |
20100093956 | POLYETHYLENE AND CATALYST COMPOSITION AND PROCESS FOR THE PREPARATION THEREOF - The invention relates to a bimodal or multimodal polyethylene which comprises ethylene homopolymers and/or copolymers of ethylene with α-olefins, has a polydispersity index Mw/Mn of the low molecular weight component of less than 10 and can be prepared using a polymerization catalyst based on a Ziegler component and a late transition metal component having a tridentate ligand which bears at least two ortho,ortho-disubstituted aryl radicals and also a catalyst system and a process for preparing the polyethylene and also fibers, moldings, films and polymer blends comprising this material. | 04-15-2010 |
20100093957 | METHOD FOR PRODUCING BUTENE-ETHYLENE COPOLYMER - A process for producing a butene-ethylene copolymer which has 1-butene content of 60% by mol or more, Mw of 200,000 or more, and Mw/Mn of 3 or less, the process including a step of copolymerizing 1-butene and ethylene in the presence of a catalyst for polymerizing olefin, and said catalyst containing a transition metal complex of the following formula (1) as a catalytic component: | 04-15-2010 |
20100113717 | Process For Producing Substituted Metallocene Compounds For Olefin Polymerization - A process for producing a substituted metallocene compound comprises reacting a first compound with a transfer-agent, wherein the first compound comprises a complex of a transition metal atom selected from Group 3, 4, 5 or 6 of the Periodic Table of Elements, or a lanthanide metal atom, or actinide metal atom and at least one monocyclic or polycyclic ligand that is pi-bonded to M and is substituted with at least one halogen or sulfonate substituent and the transfer-agent comprises a hydrocarbyl, substituted hydrocarbyl, halocarbyl, substituted halocarbyl, silylcarbyl, or germylcarbyl radical capable of replacing said at least one halogen or sulfonate substituent of said first compound under reaction conditions. | 05-06-2010 |
20100125125 | PROCESS FOR PRODUCING SOLID CATALYST COMPONENT PRECURSOR FOR OLEFIN POLYMERIZATION - A production process is provided for an olefin polymerization catalyst component precursor, including the steps of (I) adding an organomagnesium compound to a solution containing a solvent, a Si—O bond-containing silicon compound, and a defined titanium compound, under agitation, and continuing the agitation until a magnesium concentration in a liquid phase of a reaction mixture decreases to 9 ppm by weight or lower, and (II) solid-liquid separating the reaction mixture. A production process is also provided for an olefin polymerization catalyst component using the above precursor. Further, producing process is provided for an olefin polymerization catalyst using the above catalyst component. Still further, a production process is provided for an olefin polymer using the above catalyst. | 05-20-2010 |
20100144989 | METHODS OF CONTROLLING POLYMER PROPERTIES - The invention generally provides for methods for controlling polymer properties. In particular, invention provides for methods for controlling the comonomer composition distribution of polyolefins such as ethylene alpha-olefin copolymers by altering at least one or more of the following parameters: the molar ratio of hydrogen to ethylene, the molar ratio of comonomer to ethylene, the partial pressure of ethylene, and the reactor temperature without substantially changing the density and/or the melt index of the copolymer. | 06-10-2010 |
20100190939 | CATALYST COMPOSITION AND PROCESS FOR DI-, TRI-AND/OR TETRAMERIZATION OF ETHYLENE - The present invention relates to a catalyst composition and a process for di-, tri- and/or tetramerization of ethylene, wherein the catalyst composition comprises a chromium compound, a ligand of the general structure (A) R | 07-29-2010 |
20100190940 | POLYBUTADIENE AS WELL AS RUBBER COMPOSITION USING THE SAME AND TIRE - This invention provides a polybutadiene capable of improving wear resistance and resistance to crack growth in a rubber composition and a tire, wherein values of e, f and g derived from the following determinant (I): | 07-29-2010 |
20100190941 | TRANSITION METAL COMPOUND, CATALYST FOR OLEFIN POLYMERIZATION, AND PROCESS FOR PRODUCING OLEFIN POLYMER - Provided is a transition metal compound novel and useful as a catalyst component for olefin polymerization, a catalyst for olefin polymerization containing the transition metal compound, and a process for producing an olefin polymer using the catalyst for polymerization. The transition metal is characterized by being represented by the following general formula [I]: | 07-29-2010 |
20100234544 | Process for the Polymerisation of Olefins - A process for the polymerisation of olefins comprising the steps of: a) passing an olefin-containing hydrocarbon feedstock over a sorbent material comprising nickel deposited on a support material wherein said nickel is present as both nickel oxide and metallic nickel; b) converting at least part of the olefins contained in said hydrocarbon feedstock into a polymer over one or more metallocene catalysts; and c) recovering the polymer product. | 09-16-2010 |
20100267907 | METALLOCENE COMPOUNDS, CATALYSTS COMPRISING THEM, PROCESS FOR PRODUCING AN OLEFIN POLYMER BY USE OF THE CATALYSTS, AND OLEFIN HOMO-AND COPOLYMERS - Certain metallocene compounds are provided that, when used as a component in a supported polymerization catalyst under industrially relevant polymerization conditions, afford high molar mass homo polymers or copolymers like polypropylene or propylene/ethylene copolymers without the need for any α-branched substituent in either of the two available 2-positions of the indenyl ligands. The substituent in the 2-position of one indenyl ligand can be any radical comprising hydrogen, methyl, or any other C | 10-21-2010 |
20100292421 | BRIDGED METALLOCENE COMPOUND, OLEFIN POLYMERIZATION CATALYST CONTAINING THE SAME, AND ETHYLENE POLYMER OBTAINED WITH THE CATALYST - Metallocene compounds of the invention are useful as olefin polymerization catalysts or catalyst components. Olefin polymerization processes of the invention involve an olefin polymerization catalyst containing the metallocene compound. In detail, the olefin polymerization catalysts can catalyze with high polymerization activity the production of olefin polymers having high melt tension, excellent mechanical strength and good particle properties, and the olefin polymerization processes involve the catalysts. Ethylene polymers according to the invention are obtained by the polymerization processes and have higher processability and easy-opening properties and particularly excellent mechanical strength compared to conventional ethylene polymers. Thermoplastic resin compositions of the invention contain the ethylene polymers. In more detail, shaped articles or films are obtained from the ethylene polymers or the thermoplastic resin compositions containing the ethylene polymers, and laminate films include the films. | 11-18-2010 |
20100298510 | Catalyst System and Process for Olefin Polymerization - The present application relates to a new catalyst system for the polymerization of olefins, comprising a new ionic activator having the formula: [R | 11-25-2010 |
20100305286 | CATALYSTS - A complex comprising a ligand of formula (I), wherein each R | 12-02-2010 |
20100311927 | PROCESS TO MAKE LONG CHAIN BRANCHED (LCB), BLOCK, OR INTERCONNECTED COPOLYMERS OF ETHYLENE - A process is taught, comprising polymerizing ethylene in the presence of a catalyst to form a crystalline ethylene-based polymer having a crystallinity of at least 50% as determined by DSC Crystallinity in a first reactor or a first part of a multi-part reactor and reacting the crystalline ethylene-based polymer with additional ethylene in the presence of a free-radical initiator to form an ethylenic polymer in at least one other reactor or a later part of a multi-part reactor. | 12-09-2010 |
20110015357 | Preparation of Supported Silyl-Capped Silica-Bound Anion Activators and Associated Catalysts - A method for the preparation of olefin polymerization catalysts that are the reaction products of the catalytic reaction of surface hydroxyls of a support with a trialkyl silane to afford hydrogen and the corresponding surface bound alkyl silyl ether and at the same time with a strong Lewis acid which support is converted to a silica bound anion that in a second step is fully converted by reaction with QM | 01-20-2011 |
20110034651 | MIXED DONOR SYSTEM FOR HIGH MELT FLOW AND HIGH ACTIVITY - Disclosed are catalyst systems and methods of using the same for the polymerization of an olefin containing a solid titanium catalyst ant two external electron donors. Use of an aminosilane and an alkylsilane as external electron donors provide for high hydrogen response, high isotacticity, and high activity. | 02-10-2011 |
20110086990 | Ethylene-Alpha Olefin Copolymers and Polymerization Processes for Making the Same - A process for the production of an ethylene alpha-olefin copolymer is disclosed. The process includes polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C. to 150° C. to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density of 0.927 g/cc or greater and environmental stress crack resistance (ESCR) of 500 hr or more when measured according to ASTM 1693/B in 10% Igepal. | 04-14-2011 |
20110098424 | Preparation of styrene homopolymers and styrene-ethlyene copolymers - The present invention discloses copolymers of styrene and ethylene with highly syndiotactic styrene blocks prepared with of a catalyst system comprising a metallocene catalyst component of the general formula (I): (Flu-R″—C p)M(n | 04-28-2011 |
20110098425 | Catalyst Compounds and Use Thereof - This invention relates to Group 4 catalyst compounds containing di-anionic tridentate nitrogen/oxygen based ligands. The catalyst compounds are useful, with or without activators, to polymerize olefins, particularly a-olefins, or other unsaturated monomers. Systems and processes to oligomerize and/or polymerize one or more unsaturated monomers using the catalyst compound, as well as the oligomers and/or polymers produced therefrom are also provided. | 04-28-2011 |
20110098426 | TRANSITION METAL CATALYTIC SYSTEMS AND METHODS FOR PREPARING ETHYLENE HOMOPOLYMERS OR COPOLYMERS OF THE ETHYLENE AND a-OLEFINS USING THE SAME - Provided are transition metal catalytic systems for preparing ethylene homopolymers or copolymers of ethylene with α-olefins. More specifically, provided are Group 4 transition metal catalysts, which is characterized in that the catalyst comprises around the Group 4 transition metal a cyclopentadiene derivative, and at least one aryloxide ligand(s) having a fluorenyl group or a derivative thereof (which is ready to be substituted at 9-position) that functions as an electron donor and serves to stabilize the catalytic system by surrounding an oxygen atom that links the ligand to the transition metal at ortho-position, and there is no cross-linkage between the ligands; catalytic systems comprising such transition metal catalyst and aluminoxane cocatalyst or boron compound cocatalyst; and processes for preparing ethylene homopolymers or copolymers of ethylene with α-olefins by using the same. | 04-28-2011 |
20110118427 | Transition Metal Complex And Process For Production Thereof, Olefin Polymerization Catalyst, Process For Production of Polyolefin Resin, And Substituted Fluorene Compound And Process For Production Thereof - Disclosed are a transition metal complex represented by the formula (1) and a method for producing the same; a substituted fluorene compound represented by the formula (2) and a method for producing the same; an olefin polymerization catalyst including the transition metal complex as a constituent component; and a method for producing a polyolefin resin, which includes polymerizing an olefin in the presence of the olefin polymerization catalyst. | 05-19-2011 |
20110136995 | AROMATIC VINYL COMPOUND-CONJUGATED DIENE COMPOUND COPOLYMER AND METHOD OF PRODUCING THE SAME AS WELL AS RUBBER COMPOSITION AND TIRE - This invention relates to an aromatic vinyl compound-conjugated diene compound copolymer capable of giving excellent wear resistance and resistance to wet skid to a tire, and more particularly to an aromatic vinyl compound-conjugated diene compound copolymer obtained by an addition polymerization of an aromatic vinyl compound and a conjugated diene compound in the presence of a polymerization catalyst composition comprising at least one specified metallocene complex selected from the group consisting of a metallocene complex represented by the following general formula (I): | 06-09-2011 |
20110136996 | Methods of Preparing a Polymerization Catalyst - A method comprising (a) contacting a support and a chromium-containing compound to form chromium-containing support, (b) heat treating the chromium-containing support in an oxidizing atmosphere to form a treated support, (c) contacting the treated support with carbon monoxide to form a CO-contacted support, and (d) contacting the CO-contacted support with hydrogen to form a catalyst. A method comprising oxidizing a chromium-treated support to form a polymerization catalyst, contacting the polymerization catalyst with carbon monoxide to form a reduced polymerization catalyst, contacting the reduced polymerization catalyst with hydrogen to form an activated polymerization catalyst, and contacting the activated polymerization catalyst with ethylene in a reaction zone under suitable reaction conditions to form a random copolymer. A method comprising reducing a polymerization catalyst comprising Cr(VI) to form a polymerization catalyst comprising Cr(II), and treating the polymerization catalyst comprising Cr(II) with hydrogen. | 06-09-2011 |
20110160412 | HYBRID ORGANIC-INORGANIC MATERIALS THAT CONTAIN STABILIZED CARBENE - The present invention relates to materials and particularly “organometallic-organic-inorganic hybrid materials” that can be used as heterogeneous catalysts for selective catalytic reactions. More precisely this invention relates to organic-inorganic hybrid nanostructured materials comprising a regularly distributed stabilized carbene that binds strongly to a metal so as to form a stable organometallic-organic-inorganic hybrid material having high catalytic performances. | 06-30-2011 |
20110184133 | ACTIVATING SUPPORTS BASED ON PHOSPHONIUM COMPLEXES - The present invention relates to the covalent anchorage of non-coordinating anions on mineral supports to prepare activating supports for the polymerisation of ethylene and alpha-olefins and wherein the activating species is provided by a phosphonium-borate or phosphonium alane pair. The invention also discloses the concomitant covalent anchorage of zwitterionic systems containing both the non-coordinating anion and the counter cation parts of the activating supports. | 07-28-2011 |
20110184134 | Copolymers, Compositions Thereof, and Methods for Making Them - Provided are amorphous ethylene propylene copolymer, compositions thereof, and methods for making same, whereby the copolymer can include of from about 40 wt. % to about 60 wt. % ethylene derived units; and of from about 60 wt. % to about 40 wt. % propylene derived units. The copolymer can be characterized by having no discernable melting point as measured by DSC, an MFRR (MI (2.16 kg; 230° C.)/MI 21.6 kg; 230° C.) of about 38 or more, a molecular weight distribution (MWD) of from about 1.5 to about 2.5, and a shear viscosity η* at 0.01 rad/sec measured at 70° C. that satisfies the relation |η*| | 07-28-2011 |
20110213107 | Activation of monocyclopentadienyl group 6 complexes - A method for preparing a supported catalyst suitable for use in slurry and gas-phase olefin polymerizations is disclosed. An alumoxane-treated silica is combined with a monocyclopentadienyl Group 6 metal complex that comprises a chelating Cp moiety to give the supported catalyst. The method is simple to practice and provides catalysts having high activity. Polyolefins made using the catalysts have high molecular weight that is readily controlled by adding hydrogen. | 09-01-2011 |
20110230630 | METALLOCENE COMPOUNDS, CATALYSTS COMPRISING THEM, PROCESS FOR PRODUCING AN OLEFIN POLYMER BY USE OF THE CATALYSTS, AND OLEFIN HOMO- AND COPOLYMERS - Certain metallocene compounds are provided that, when used as a component in a supported polymerization catalyst under industrially relevant polymerization conditions, afford high molar mass homo polymers or copolymers like polypropylene or propylene/ethylene copolymers without the need for any α-branched substituent in either of the two available 2-positions of the indenyl ligands. The substituent in the 2-position of one indenyl ligand can be any radical comprising hydrogen, methyl, or any other C | 09-22-2011 |
20110245439 | OLEFIN POLYMERIZATION CATALYST COMPONENT AND PRODUCTION PROCESS THEREOF, AND PRODUCTION PROCES OF OLEFIN POLYMERIZATION CATALYST AND OLEFIN POLYMER - A solid catalyst component for olefin polymerization containing a titanium atom, a magnesium atom, a halogen atom, and a defined internal electron donor such as dodecanedioyl dichloride; a production process of such a solid catalyst component, using a titanium compound, a magnesium compound, and the above internal electron donor, or using a solid component containing a titanium atom and a magnesium atom, and the above internal electron donor; a production process of a solid catalyst, using (i) the above solid catalyst component, (ii) an organoaluminum compound, and (iii) an external electron donor; and a production process of an olefin polymer using the above solid catalyst. | 10-06-2011 |
20110251362 | Olefin polymerization catalysts - Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 transition metal complex which comprises at least one monoanionic R | 10-13-2011 |
20110288249 | Halogen Substituted Heteroatom-Containing Metallocene Compounds for Olefin Polymerization - Halogen substituted metallocene compounds are described and comprise one or more monocyclic or polycyclic ligands that are pi-bonded to the metal atom and include at least one halogen substituent directly bonded to an sp | 11-24-2011 |
20110306740 | CATALYSTS FOR OLEFIN POLYMERIZATION - Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a bridged cyclopentadienyl complex that incorporates a monoanionic hydroxylamido or hydrazido ligand fragment. Suitable complexes have the structure: | 12-15-2011 |
20110313117 | Propylene Ethylene Polymers And Production Process - Ethylene propylene copolymers, substantially free of diene, are described. The copolymers will have a uniform distribution of both tacticity and comonomer between copolymer chains. Further, the copolymers will exhibit a statistically insignificant intramolecular difference of tacticity. The copolymers are made in the presence of a metallocene catalyst. | 12-22-2011 |
20120010376 | Multi-Component Catalyst Systems and Polymerization Processes for Forming Broad Composition Distribution Polymers - Propylene polymerization processes, polymers and films formed therefrom are described herein. The propylene polymerization processes generally include contacting propylene and an amount of ethylene with a first metallocene catalyst and a second metallocene catalyst within a polymerization reaction vessel to form a propylene based polymer, wherein the amount is an amount effective to form the propylene based polymer including from about 2 wt. % to about 6 wt. % ethylene, the second metallocene catalyst is capable of incorporating a greater amount of ethylene into the propylene based polymer than the first metallocene catalyst and wherein the first metallocene catalyst is capable of forming a propylene/ethylene random copolymer exhibiting a melting temperature that is greater than that of a propylene/ethylene random copolymer formed from the second metallocene catalyst. | 01-12-2012 |
20120010377 | Catalyst System for the Polymerization of Alpha-Olefins - The invention refers to a catalyst system for the polymerization of olefins including a diorganohydroborane molecular weight modifier. By addition of diorganohydroborane to the catalyst system it is possible to control the molecular weight of a polyolefin to higher values. | 01-12-2012 |
20120059135 | COPOLYMER OF OLEFIN AND CONJUGATED DIENE, AND PROCESS FOR PRODUCING THE SAME - An object of the invention is to provide copolymers which have a double bond in a side chain and are substantially free of unsaturated bonds in the main chain, copolymers which have a cyclic structure and are substantially free of unsaturated bonds in the main chain, and processes for economically synthesizing these copolymers. | 03-08-2012 |
20120071615 | Bi-Nuclear Metallocene Compound and the Preparation Method of Polyolefin Using the Same - The present invention relates to a binuclear metallocene compound having a new structure that is able to offer various selectivities and activities for copolymers, a preparation method thereof, and a method for preparing a polyolefin using the binuclear metallocene compound. | 03-22-2012 |
20120108770 | HIGH TEMPERATURE POLYETHYLENE SOLUTION POLYMERIZATION PROCESS - Metal complexes of polyvalent aryloxyethers appropriately substituted with sterically bulky substituents possess enhanced solubility in aliphatic and cycloaliphatic hydrocarbons and/or when employed as catalyst components for the polymerization of ethylene/α-olefin copolymers, produce products having reduced I | 05-03-2012 |
20120123068 | NOVEL COMBINATIONS OF SILANE ELECTRON DONORS FOR USE IN CATALYST COMPOSITIONS - Disclosed is a process for preparing an olefinic polymer comprising contacting at least one olefinic C3+ monomer and a catalyst composition comprising a Ziegler-Natta catalyst, dicyclopentyl dimethoxysilane as a first electron donor, and a second electron donor selected from the group consisting of methyl trimethoxysilane, methyl triethoxysilane, dimethyl dimethoxysilane, and mixtures thereof, under reaction conditions suitable to form an olefinic polymer. The polymer prepared using this method may exhibit significantly broadened molecular weight distribution than that achieved using any of the silane compounds alone, and may also exhibit desirable melt flow characteristics and xylene solubles levels. | 05-17-2012 |
20120123069 | Method for Controlling Polyolefin Properties - The invention relates to a method for controlling properties of a polyolefin. More particularly, the invention relates to a method for controlling certain properties of an ethylene-butene copolymer and compositions thereof using isobutylene and/or other C | 05-17-2012 |
20120165484 | PROCESS AND CATALYST SYSTEM FOR POLYDIENE PRODUCTION - A process for preparing a polydiene, the process comprising the step of polymerizing conjugated diene monomer with a lanthanide-based catalyst system in the presence of a vinylsilane, an allylsilane, or an allylvinylsilane. | 06-28-2012 |
20120196993 | METHOD FOR PRODUCING COPOLYMER - This invention relates to a method for producing a copolymer of a conjugated diene compound and an unconjugated olefin other than the conjugated diene compound having a high cis-1,4 bond content of a conjugated diene compound portion, and more particularly to a method for producing a copolymer characterized by comprising a step of polymerizing a conjugated diene compound and an unconjugated olefin other than the conjugated diene compound in the presence of a polymerization catalyst composition including at least one complex selected from a metallocene complex represented by the following general formula (I): | 08-02-2012 |
20120202956 | Halogen Substituted Heteroatom-Containing Metallocene Compounds for Olefin Polymerization - Halogen substituted metallocene compounds are described and comprise one or more monocyclic or polycyclic ligands that are pi-bonded to the metal atom and include at least one halogen substituent directly bonded to an sp | 08-09-2012 |
20120232235 | 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. | 09-13-2012 |
20120245310 | Vinyl Terminated Higher Olefin Copolymers and Methods to Produce Thereof - This invention relates to a vinyl terminated higher olefin copolymer having an Mn of 300 g/mol or more (measured by | 09-27-2012 |
20120245311 | 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: | 09-27-2012 |
20120245312 | Vinyl Terminated Higher Olefin Polymers and Methods to Produce Thereof - This invention relates to higher olefin vinyl terminated polymers having an Mn of at least 200 g/mol (measured by | 09-27-2012 |
20120252993 | CATALYSTS - A complex containing a ligand of formula (I): | 10-04-2012 |
20120252994 | Methods for Making Polyolefin Products Having Different Shear Thinning Properties and Haze - Provided is a method for making a polyolefin comprising contacting one or more olefins in a reactor containing a catalyst; polymerizing the one or more olefins to produce an olefin polymer characterized by a first melt flow ratio (MFR) and a first haze; and altering the reaction temperature in the reactor to shift the first MFR to a MFR that is different than the first MFR and to shift the first haze to a haze that is different than the first haze. | 10-04-2012 |
20120264896 | Process for Recovering a Transition Metal Compound - The present application aims to provide a process for producing a solid polymerization catalyst component, including the steps of (A) producing a solution with a transition metal compound and a solvent; (B) solidifying a component with the transition metal compound to produce the solid polymerization catalyst component in a solidification stage; (C) recovering from the solidification stage a liquid stream containing a minor amount of the transition metal compound dissolved therein and a solid catalyst stream; and (D) recovering the transition metal component from the liquid stream, characterized in that step (D) may include concentrating the solution to produce a first product stream including the solvent and being essentially free of the transition metal compound and a second product stream including the solvent and the transition metal compound, characterized in that the concentration is conducted within a temperature range of from 0 to 100 degrees Celsius. | 10-18-2012 |
20120271016 | CATALYSTS - The present invention relates to novel metallocene catalysts of formula I, which is defined herein. The present invention also provides processes for making these catalysts and their use in olefin polymerisation reactions. | 10-25-2012 |
20120277387 | POLYMERIZATION CATALYST COMPOSITIONS CONTAINING METALLOCENE COMPLEXES AND POLYMERS PRODUCED BY USING THE SAME - The present invention provides a novel catalyst composition comprising a metallocene complex, and a novel producing method for various polymer compounds. Preferably, the invention provides a novel polymer compound, and a producing method thereof. Specifically, the invention provides a polymerization catalyst composition, comprising:
| 11-01-2012 |
20120316301 | Methods for controlling ethylene copolymer properties - A method for altering the polymer architecture of ethylene copolymers made with a supported phosphinimine polymerization catalyst. The method involves changing the amount of a catalyst modifier added to a reactor separately from or together with a supported phosphinimine polymerization catalyst. | 12-13-2012 |
20120316302 | Catalyst Systems Comprising Multiple Non-Coordinating Anion Activators and Methods for Polymerization Therewith - This invention relates to a method to polymerize olefins comprising contacting olefins with a catalyst system comprising a transition metal catalyst compound and: 1) at least two NCA activators represented by the formula: Z | 12-13-2012 |
20120329964 | METALLOCENE COMPOUNDS, CATALYSTS COMPRISING THEM, PROCESS FOR PRODUCING AN OLEFIN POLYMER BY USE OF THE CATALYSTS, AND OLEFIN HOMO- AND COPOLYMERS - Certain metallocene compounds are provided that, when used as a component in a supported polymerization catalyst under industrially relevant polymerization conditions, afford high molar mass homo polymers or copolymers like polypropylene or propylene/ethylene copolymers without the need for any α-branched substituent in either of the two available 2-positions of the indenyl ligands. The substituent in the 2-position of one indenyl ligand can be any radical comprising hydrogen, methyl, or any other C | 12-27-2012 |
20130018156 | CATALYSTSAANM Resconi; LuigiAACI FerrarraAACO ITAAGP Resconi; Luigi Ferrarra ITAANM Castro; PascalAACI HelsinkiAACO FIAAGP Castro; Pascal Helsinki FIAANM Huhtanen; LauriAACI LoviisaAACO FIAAGP Huhtanen; Lauri Loviisa FI - A solid particulate catalyst free from an external carrier comprising: | 01-17-2013 |
20130023633 | Vinyl Terminated Higher Olefin Polymers and Methods to Produce Thereof - This invention relates to higher olefin vinyl terminated polymers having an Mn of at least 200 g/mol (measured by | 01-24-2013 |
20130072648 | SOLID CATALYST FOR OLEFIN POLYMERIZATION AND PROCESS FOR PRODUCING OLEFIN POLYMER - A solid catalyst for olefin polymerization and a process for producing an olefin polymer are provided. The polymer has a small content of a component which is dissolved out into a low temperature organic solvent, such as a low-molecular weight component and an amorphous component. The solid catalyst is obtained by bringing a solid catalyst component for olefin polymerization containing a titanium atom, a magnesium atom, a halogen atom, and an aliphatic carboxylate; an organoaluminum compound; and a compound represented by formula (I) into contact with each other: | 03-21-2013 |
20130085244 | Use of Temperature and Ethylene Partial Pressure to Introduce Long Chain Branching in High Density Polyethylene - The invention describes the preparation of long chain branching in high density polyethylene by using metallocene catalysts in the presence of ethylene. | 04-04-2013 |
20130102745 | CATALYST COMPOSITION AND PROCESS FOR PRODUCTION OF OLEFIN POLYMERS USING THE CATALYST COMPOSITION - The present invention provides a catalyst composition and a method for producing an olefin polymer using the catalyst composition. The catalyst composition is prepared by bringing (A) a transition metal compound, (B) a solid boron compound capable of forming an ion pair with the component (A), (C) an organometallic compound and (D) a compound represented by the following general formula (XIV) and/or the following general formula (XV) into contact with each other in a hydrocarbon solvent, and enables a high catalyst concentration. | 04-25-2013 |
20130116394 | SOLID PARTICULATE CATALYSTS COMPRISING BRIDGED METALLOCENES - Solid, particulate catalysts comprising bridged his indenyl n-ligands are disclosed, together with methods for the preparation and use thereat for example, in olefin polymerization. | 05-09-2013 |
20130131291 | SOLID PARTICULATE CATALYSTS COMPRISING BRIDGED METALLOCENES - A polypropylene homopolymer with a melting point of less than 147° C., a percentage of 2.1 errors of at least 1% and a xylene soluble fraction of less than 0.5 wt %. | 05-23-2013 |
20130131292 | CATALYST FOR POLYMERIZATION OF OLEFINS COMPRISING THIENYL-SUBSTITUTED SILANES - Disclosed is a catalyst for the polymerization of olefins comprising thienyl-substituted silanes, which comprises a solid titanium catalyst component containing titanium, magnesium and a halogen as the main components, an alkylaluminum compound, and a component of organosiloxane compound comprising two thienyl as substituents represented by general formula (I). The molar ratio of each catalyst component is 1:50-150:5-50 based on titanium:aluminum:silicon. When the catalyst is used in the polymerization of propylene, the polymerisate obtained has very high degree of isotacticity, and the yield is high. | 05-23-2013 |
20130150541 | Vinyl Terminated Higher Olefin Copolymers and Methods to Produce Thereof - This invention relates to a vinyl terminated higher olefin copolymer having an Mn of 300 g/mol or more (measured by | 06-13-2013 |
20130197174 | COPOLYMER AND METHOD OF MANUFACTURING THE SAME - Disclosed is a method of manufacturing a copolymer of a conjugated diene compound and an olefin other than the conjugated diene compound, where a conjugated diene compound and an olefin other than the conjugated diene compound is copolymerized in the presence of a polymerization catalyst composition containing components: (A) a rare earth element compound or a reactant of the rare earth element compound and a Lewis base; and (B) at least one selected from a group consisting of an ionic compound (B-1) composed of a non-coordinating anion and a cation, an aluminoxane (B-2), and at least one kind of halogen compound (B-3) selected from among a Lewis acid, a complex compound of a metal halide and a Lewis base, and an organic compound containing active halogen (when containing at least one of (B-1) and (B-3), the polymerization catalyst composition further contains component (C): an organometallic compound). | 08-01-2013 |
20130217845 | PROCESS FOR OLEFIN POLYMERISATION USING GROUP 4 METALLOCENE AS CATALYSTS - A process for the preparation of a random propylene copolymer comprising polymerising propylene and at least one C2-10 alpha olefin (especially ethylene) in the presence of a catalyst; wherein said catalyst comprises: (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′ | 08-22-2013 |
20130237674 | ADVANCED TRANSITION METAL CATALYTIC SYSTEMS IN TERMS OF COMONOMER INCORPORATIONS AND METHODS FOR PREPARING ETHYLENE HOMOPOLYMERS OR COPOLYMERS OF ETHYLENE AND ALPHA-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. | 09-12-2013 |
20130245212 | PREPARATION OF A SOLID CATALYST SYSTEM - Process for the preparation of a solid catalyst system comprising the steps of generating an emulsion by dispersing a liquid clathrate in a solution wherein (i) the solution constitutes the continuous phase of the emulsion and (ii) the liquid clathrate constitutes in form of droplets the dispersed phase of the emulsion, solidifying said dispersed phase to convert said droplets to solid particles and optionally recovering said particles to obtain said catalyst system, wherein the liquid clathrate comprises a lattice being the reaction product of aluminoxane, an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, and a further compound being effective to form with the aluminoxane and the organometallic compound the lattice, and a guest being an hydrocarbon compound, and the solution comprises a silicon fluid and a hydrocarbon solvent. | 09-19-2013 |
20130253152 | PREPARATION OF A SOLID CATALYST SYSTEM - Process for the preparation of a solid catalyst system (CS) comprising the steps of preparing a liquid clathrate (LC) comprising (a) a lattice (L) being the reaction product of (i) aluminoxane (A), (ii) an organometallic compound (O) of a transition metal (M) of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, and (i) a compound (B) being effective to form with the aluminoxane (A) and the organometallic compound (O) the lattice (L), and (b) a guest (G) being an hydro-carbon compound (HC), and subsequently precipitating said liquid clathrate (LC) obtaining said solid catalyst system (SC). | 09-26-2013 |
20130253153 | Processes for the Polymerization of Olefins with Extracted Metal Carboxylate Salts - Processes for the polymerization of olefins with extracted metal carboxylate salts are provided. The polymerization processes have increased productivity and/or increased resin bulk density. | 09-26-2013 |
20130281641 | Blocky Ethylene Propylene Copolymers and Methods for Making Them - Copolymers comprising ethylene and propylene and methods for producing such polymers are provided. The polymers are blocky copolymers having semicrystalline ethylene sequences and amorphous or low crystallinity propylene sequences. The polymers are preferably prepared using metallocene-based catalyst systems but without the use of a chain shuttling agent. The polymers may have higher melting temperatures than previously known random copolymers or blocky copolymers prepared with chain shuttling agents having similar comonomer contents. The polymers include both ethylene-rich and propylene-rich copolymers. | 10-24-2013 |
20130289229 | CATALYSTS - 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′ | 10-31-2013 |
20130310527 | HIGHLY VISCOUS HIGHER ALPHAOLEFIN POLYMER AND METHOD FOR PRODUCING SAME - An α-olefin polymer has (A) a tacticity index(meso triad fraction)[mm] of 10 to 50 mol %, (B) a kinematic viscosity at 100° C. of 200 to 10,000 mm | 11-21-2013 |
20130317185 | POLYETHYLENE POLYMERISATION IN GAS PHASE REACTOR - A novel gas phase polymerisation method is devised, for polymerisation of low and ultralow density polyethylene. | 11-28-2013 |
20140031502 | Metal Complex Catalysts And Polymerization Methods Employing Same - A novel class of aminidate complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers. | 01-30-2014 |
20140031503 | Lanthanide Complex Catalyst And Polymerization Method Employing Same - A novel class of lanthanide metal phenoxyimine complexes can be used as an ingredient of a catalyst system. The catalyst system can be used in polymerizations of ethylenically unsaturated hydrocarbon monomers. | 01-30-2014 |
20140080982 | Ethylene Copolymers, Methods for Their Production, and Use - Provided is an ethylene copolymer having 40 wt. % to 70 wt. % of units derived from ethylene and at least 30 wt. % of units derived from at least one α-olefin having 3 to 20 carbon atoms and has the following properties:
| 03-20-2014 |
20140114032 | METHOD FOR PRODUCING OLEFIN POLYMER - A method for producing an olefin polymer including: polymerizing one or more α-olefins each having 6 to 20 carbon atoms in the presence of a metallocene catalyst to obtain an olefin polymer, and diluting a polymerization reaction liquid with a solvent before or simultaneously with deactivation of the catalyst, thereby to lower the liquid viscosity of the polymerization reaction liquid to 10 mPa·s or less to promote deactivation and decalcification of the catalyst. | 04-24-2014 |
20140114033 | OLEFIN BLOCK COPOLYMERS AND PRODUCTION METHODS THEREOF - The present description relates to olefin block copolymers having excellent elasticity and processability in conjunction with enhanced heat resistance, and to a preparation method thereof. The olefin block copolymers comprise a plurality of blocks or segments that comprise ethylene or propylene repeating units and α-olefin repeating units at different mole fractions from one another, wherein the block copolymer shows peaks at the 2θ of 21.5±0.5° and 23.7±0.5° in a wide-angle x-ray diffraction (WAXD) pattern, and the peak ratio defined by (the peak area at 21.5±0.5°)/(the peak area at 23.7±0.5°) is no more than 3.0. | 04-24-2014 |
20140179884 | Bridged Metallocene Compounds, Catalyst Systems and Processes for Polymerization Therewith - This invention relates to bridged metallocene compounds and catalyst systems comprising these bridged metallocene compounds. | 06-26-2014 |
20140213745 | Branched Propylene Oligomers - This invention relates method to prepare and compositions pertaining to an amorphous polymer comprising: at least 95 mol % propylene and 0 to 5 mol % vinyl monomer content, wherein the polymer has a g′ | 07-31-2014 |
20140235806 | Curable Silicone Composition For Sealing An Optical Semiconductor Element, Method Of Producing A Resin-Sealed Optical Semiconductor Element, And Resin-Sealed Optical Semiconductor Element - A curable silicone composition for sealing an optical semiconductor element, comprising: (A) an organopolysiloxane that has at least two silicon-bonded vinyl groups in one molecule, that has C | 08-21-2014 |
20140296455 | MULTINUCLEAR METALLOCENE CATALYST COMPOUND FOR OLEFIN POLYMERISATION AND COPOLYMERISATION AND METHOD FOR MAKING THEREOF - The invention relates to a multinuclear metallocene catalyst compound according to Formula (1), wherein Y and Y′ are the same or different and independently selected from the group consisting of C | 10-02-2014 |
20140309385 | Catalysts for Preparing Ultra High Molecular Weight Polyethylene (UHMWPE) - Group 4 transition metal complexes of bidentate iminonaphthol pro-ligands can be used as catalysts to polymerise olefins, such as ethylene. Group 4 transition metal complexes of bidentate iminonaphthol pro-ligands can have a single-site nature, allowing the catalysts to be used to prepare ultra high molecular weight polyethylene having a narrow molecular weight distribution. | 10-16-2014 |
20140316085 | Process of Producing Polyolefins Using Metallocene Polymerization Catalysts and Copolymers Therefrom - An ethylene copolymer, a Group 4 transition metal catalyst compound, and methods for polymerization using such a compound, said compound represented by the formula: (L) | 10-23-2014 |
20140371408 | METHOD FOR PRODUCING COPOLYMER - This invention relates to a method for producing a copolymer of a conjugated diene compound and an unconjugated olefin other than the conjugated diene compound having a high cis-1,4 bond content of a conjugated diene compound portion, and more particularly to a method for producing a copolymer characterized by comprising a step of polymerizing a conjugated diene compound and an unconjugated olefin other than the conjugated diene compound in the presence of a polymerization catalyst composition including at least one complex selected from a metallocene complex represented by the following general formula (I): | 12-18-2014 |
20150018502 | METHOD FOR ETHYLENE OLIGOMERIZATION - The present invention relates to a method for ethylene oligomerization. According to the method of the present invention, highly active ethylene oligomerization reaction is possible by using a catalyst system including a novel chromium compound exhibiting high activity for ethylene oligomerization reaction, and therefore, polyethylene can be prepared using a small amount of comonomers or using only ethylene without comonomers. | 01-15-2015 |
20150025205 | Metallocenes and Catalyst Compositions Derived Tehrefrom - This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound that is asymmetric having two non-identical indenyl ligands with substitution at R | 01-22-2015 |
20150025206 | Metallocenes and Catalyst Compositions Derived Therefrom - This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound having two indenyl ligands with identical substitution including, for example, cyclopropyl groups and substituted phenyl groups at the 2 and 4 positions of the catalyst, respectively, where the substituents are at the 3′ and 5′ positions of the phenyl groups. | 01-22-2015 |
20150025207 | Cyclopropyl Substituted Metallocene Catalysts - This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound having at least one arenyl ligand substituted with: 1) a cyclopropyl group and, optionally, 2) at least one other group, such as a hydrocarbyl, a heteroatom or a heteroatom containing group. | 01-22-2015 |
20150119539 | Asymmetric Polypropylene Catalysts - This invention relates to unsymmetrical metallocenes, catalyst systems therefrom and their use to make highly isotactic polypropylene. | 04-30-2015 |
20150126695 | POLYMERIZATION CATALYST COMPOSITION, METHOD FOR PRODUCING SYNTHETIC POLYISOPRENE, AND SYNTHETIC POLYISOPRENE - A polymerization catalyst composition that, without accompanying excessive gelation, allows efficient synthesis of high molecular weight polyisoprene under industrial conditions is provided. The polymerization catalyst composition contains:
| 05-07-2015 |
20150298111 | Ruthenium Or Osmium Complex, Method For Its Preparation And Use Thereof - The subject of the present invention are novel metal complexes defined by Formula 1: | 10-22-2015 |
20150299353 | Cyclopenta[b]Fluorenyl Transition Metal Compound, Catalyst Composition Containing the Same, and Method of Preparing Ethylene Homopolymer or Copolymer of Ethylene and alpha-Olefin Using the Same - The present invention relates to a new transition metal compound based on cyclopenta[b]fluorenyl group, a transition metal catalyst composition containing the same and having high catalytic activity for preparing an ethylene homopolymer or a copolymer of ethylene and one α-olefin, a method of preparing an ethylene homopolymer or a copolymer of ethylene and α-olefin using the same, and the prepared ethylene homopolymer or the copolymer of ethylene and α-olefin. | 10-22-2015 |
20150307641 | Process to Produce Ethylene Propylene Copolymers - This invention relates to a copolymer prepared using two or more non-coordinating anion activators comprising a first C2 to C12 alpha olefin (such as ethylene), a second C3 to C12 alpha olefin (such as propylene) different from the first alpha olefin, and diene (such as ethylidene norbornene and/or vinyl norbornene), where the polymer has: a) first alpha olefin (ethylene) content of 35 to 90 mol %; b) second alpha olefin (propylene) content of 9.8 to 64.8 mol %; c) diene content of 0.2 to 5 mol %; d) a branching index g′ave of 0.95 or more; e) a complex viscosity ratio (eta*(0.01 rad/s)/eta*(100 rad/s), at 125° C.) greater than 1.1*Y | 10-29-2015 |
20150344593 | Heterogeneous Ziegler-Natta Catalyst System And A Process For Olefin Polymerization Using The Same - The present disclosure provides a heterogeneous Ziegler-Natta catalyst system to be used in the preparation of ultra-high molecular weight polymers (UHMWP). The system includes at least one procatalyst, at least one co-catalyst, at least one hydrocarbon medium and at least one external donor, wherein the ratio of elemental magnesium to elemental titanium to halide, in the procatalyst, is 1:1.3:3.7; the ratio of elemental aluminum, present in the co-catalyst to elemental titanium, present in the procatalyst, ranges between 6:1 and 12:1; and the ratio of elemental silicon, present in the external donor to elemental titanium, present in the procatalyst, ranges between 1:10 and 10:1. The present disclosure also provides a process for preparation of UHMWPE using the heterogeneous Ziegler-Natta catalyst system of the present disclosure. | 12-03-2015 |
20150368382 | POLYMERIZATION CATALYST COMPOSITION, METHOD FOR PRODUCING SYNTHETIC POLYISOPRENE, AND SYNTHETIC POLYISOPRENE - The polymerization catalyst composition includes: Component (A): a rare earth element compound of formula (i): M-(NQ | 12-24-2015 |
20160130374 | Metallocenes and Catalyst Compositions Derived Therefrom - This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound that is asymmetric having two non-identical indenyl ligands with substitution at R | 05-12-2016 |
20160137763 | Processes Using Staged Hydrogen Addition - This invention relates to processes using staged hydrogen addition in propylene polymerization. Using this process, broad/bi-modal MWD iPP with excellent stiffness properties and melt flow rates were produced. | 05-19-2016 |
20160145359 | A POLYETHYLENE COMPOSITION AND PROCESS FOR POLYMERIZING THE SAME - The instant invention provides a polyethylene composition and process for polymerizing the same. | 05-26-2016 |