Class / Patent application number | Description | Number of patent applications / Date published |
526172000 | Transition metal compound has at least one atom of P, S, N or O therein | 72 |
20080207857 | Olefin Oligomerization Catalysts and Methods of Using Same - A metal complex comprising a metal compound complexed to a heteroatomic ligand, the metal complex having Structure X: | 08-28-2008 |
20080249266 | Polymerisation Catalyst System Based on Monooxime Ligands - The present invention discloses active oligomerisation and polymerisation catalyst systems based on dioxime ligands. | 10-09-2008 |
20080269445 | Monocyclopentadienyl Complexes - Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one bridged donor and at least one arylalkyl group and a catalyst system comprising at least one of the monocyclopentadienyl complexes, and also methods for preparing them, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing polyolefins by polymerization or copolymerization of olefins in the presence of the catalyst system and the preparation of the associated cyclopentadienyl system. | 10-30-2008 |
20080287621 | Catalysts for olefin polymerization or oligomerization - Novel iron and cobalt complexes of certain novel tricyclic ligands containing a “pyridine” ring and substituted with two imino groups are polymerization and/or oligomerization catalysts for olefins, especially ethylene. Depending on the exact structure of the ligand, and polymerization process conditions, products ranging from α-olefins to high polymers may be produced. The polymers, especially polyethylenes, are useful for films and as molding resins. | 11-20-2008 |
20090005526 | Tridentate Metal Catalyst for Olefin Polymerization - In accordance with the present invention, there is provided a transition metal olefin polymerization catalyst component characterized by the formula: | 01-01-2009 |
20090043060 | Process For the Preparation of a Polymer - The invention relates to a process for the preparation of a polymer comprising at least aliphatic or aromatic hydrocarbyl C | 02-12-2009 |
20090043061 | Polymerisation catalysts - A complex compound comprising the skeletal unit (A), wherein the ring C(R | 02-12-2009 |
20090069519 | COBALT-CATALYZED ASYMMETRIC CYCLOPROPANATION OF ELECTRON-DEFICIENT OLEFINS - Cobalt-catalyzed asymmetric cyclopropanation of electron-deficient olefins. | 03-12-2009 |
20090111957 | FLUORO-PONYTAILED BIPYRIDINE DERIVATIVES AND THEIR USE AS LIGANDS IN THE METAL-CATALYZED ATRP - The present invention also relates a metal complex complexing with the fluoro-ponytailed bipyridine derivatives, which is represented by the general formula (2): | 04-30-2009 |
20090111958 | SINGLE CATALYST SYSTEMS HAVING A SCORPION-LIKE STRUCTURE - The present invention discloses single site catalyst systems having scorpion-like three dimensional structure that are suitable for oligomerising or polymerising ethylene and alpha-olefins. | 04-30-2009 |
20090131615 | CATALYST SYSTEMS BASED ON AROMATIC DIIMINE LIGANDS - The present invention discloses the use of aromatic diamine ligands to prepare catalyst systems suitable for the oligomerisation or polymerisation of ethylene and alpha-olefins. | 05-21-2009 |
20090149614 | CABLE LAYER ON POLYPROPYLENE BASIS WITH HIGH ELECTRICAL BREAKDOWN STRENGTH - Certain embodiments of the present technology provide a cable layer comprising a polypropylene material, where the cable layer and/or the polypropylene material comprise a crystalline fraction that crystallizes in a temperature range of 200 to 105° C., determined by stepwise isothermal segregation technique. The crystalline fraction comprises a part which during subsequent melting of the crystalline fraction at a melting rate of 10° C./min, the part melts at or below 140° C. and the part represents at least 10 percent by weight of the crystalline fraction. Certain embodiments also provide a process for the preparation of a cable layer, comprising providing the polypropylene material described herein and forming the polypropylene material into a cable layer. | 06-11-2009 |
20090156768 | Transition Metal Compound, Ligand System, Catalyst System and Process for Preparing Polyolefins - The present invention relates to transition metal compounds of the formula (I); where M is an element of group 3, 4, 5, 6, 7, 8, 9 or 10 of the Periodic Table of the Elements or the lanthanide's, the radicals X are identical or different and are each an organic or inorganic radical, with two radicals X also being able to be joined to one another to form a divalent radical, is 1, 2, 3 or 4, L | 06-18-2009 |
20090176950 | METAL HYDRIDE COMPLEX, METHOD OF HYDROGENATING RING-OPENING POLYMERIZATION POLYMER OF CYCLOOLEFIN, AND PROCESS FOR PRODUCING PRODUCT OF HYDROGENATION OF RING-OPENING POLYMERIZATION POLYMER OF CYCLOOLEFIN - A metal hydride complex of the invention is a hydride complex of a metal selected from the group consisting of ruthenium, rhodium, osmium and iridium and has one or more aromatic carboxylic acid residues. According to the invention, there is provided a new metal hydride complex which is dissolved in an organic solvent having a low polarity such as a hydrocarbon solvent at a high concentration and has a high catalytic activity of hydrogenating carbon-carbon double bonds. The metal hydride complex relating to the invention is especially suitable as a catalyst in the hydrogenation reaction of a cycloolefin ring-opening polymer. | 07-09-2009 |
20090192278 | Alkene polymerization using beta-ketoiminato metal complexes - Group (IV) and (X) metal complexes with ketoiminate ligands are prepared by deprotonation of a ketoimine ligand followed by reaction with the appropriate metal halide. In preferred cases, the compounds are titanium (IV), zirconium (IV) and hafnium (IV), preferred cases, the compounds are titanium (IV), zirconium (IV) and hafnium (IV) complexes with (arylimino-alkyl)-spiro[4,5]decan-6-one ligands. The compounds are useful as catalysts for polymerizing ethylene, C | 07-30-2009 |
20090221774 | DIENE POLYMER AND PRODUCTION PROCESS THEREOF - A polymer comprising a unit represented by the following formula (1); and a process for producing the polymer comprising the step of polymerizing a diene compound such as 9,9-diallylfluorene in the presence of a polymerization catalyst formed by contacting a nickel compound with an organoaluminum compound and/or a boron compound: | 09-03-2009 |
20090240011 | POLYMERISATION OF ETHYLENE AND ALPHA-OLEFINS WITH PHOSPHINO-IMINOPHENOL COMPLEXES - The present invention relates to the field of single site catalyst systems based on phosphino-iminophenol complexes that are suitable for oligomerising or polymerising ethylene and alpha-olefins. | 09-24-2009 |
20090264609 | SINGLE SITE CATALYST SYSTEMS HAVING A SCORPION-LIKE STRUCTURE - The present invention discloses single site catalyst systems having scorpion-like three dimensional structure that are suitable for oligomerising or polymerising ethylene and alpha-olefins. | 10-22-2009 |
20090281260 | SINGLE-CHAIN-END FUNCTIONALIZED POLYOLEFIN - A single-chain-end functionalized polyolefin and method of producing the same. The polyolefin is represented by the following general formula (I): | 11-12-2009 |
20090292090 | Methods of Preparation of an Olefin Oligomerization Catalyst - A method of making an olefin oligomerization catalyst, comprising contacting a chromium-containing compound, a heteroatomic ligand, and a metal alkyl, wherein the chromium-containing compound comprises less than about 5 weight percent chromium oligomers. A method of making an olefin oligomerization catalyst comprising a chromium-containing compound, a nitrogen-containing compound, and a metal alkyl, the method comprising adding a composition comprising the chromium-containing compound to a composition comprising the metal alkyl. A method of making an olefin oligomerization catalyst comprising a chromium-containing compound, a nitrogen-containing compound, and a metal alkyl, the method comprising abating all or a portion of water, acidic protons, or both from a composition comprising the chromium-containing compound, a composition comprising the nitrogen-containing compound, or combinations thereof prior to or during the preparation of the catalyst. Methods of oligomerizing olefins by contacting such catalysts with an alpha olefin. | 11-26-2009 |
20100016529 | CATALYST PRECURSOR FOR THE PRODUCTION OF OLEFINS WITH AN ODD NUMBER OF CARBONS ATOMS, PROCESS FOR ITS PREPARATION AND PRODUCTION METHOD FOR SUCH OLEFINS - The present invention relates to a catalyst precursor for the production of odd olefins having the formula: | 01-21-2010 |
20100113723 | Method For Preparation Of 1- Alkene-Acrylate Based Copolymers - The present invention provides a method for preparation of an 1-alkene-acrylate based copolymer comprising a step of a radical polymerization reaction of 1-alkene and acrylate based monomer under presence of a metal oxide or Lewis acid, and a method for preparation of an alkene-acrylate based copolymer comprising reacting alkene with an acrylate based monomer under presence of a metal oxide. In the method of preparation according to the present invention, the process is simple and properties of the copolymer can be easily controlled by preparing the copolymer in a mild condition of 100° C. or less and 200 bar or less. In addition, the amount of the polar group of the copolymer prepared by the method is so high that the copolymer can be used for transparent optical products. Since the alkene-acrylate based copolymer prepared by the method is a random copolymer of ethylene and a polar monomer and the amount of the polar group of the polar monomer so high that the crystallinity of the ethylene monomer does not remain in the copolymer, the ethylene-acrylate based copolymer is not affected from a transparency of the polymer and thus may be used for optical products. | 05-06-2010 |
20100130708 | Method of Controlling the Relative Activity of the Different Active Centers of Hybrid Catalysts - Method of preparing olefin polymers, which comprises the polymerization of at least one α-olefin in the presence of a hybrid catalyst to produce a polymer comprising at least a higher molecular weight polymer component and a lower molecular weight polymer component in the presence of water in an amount of from 2 to 100 mol ppm and/or carbon dioxide in an amount of from 2 to 100 mol ppm, in each case based on the total reaction mixture, in order to alter the ratio of the higher molecular weight polymer component to the lower molecular weight polymer component. This enables the ratio of the higher molecular weight component to the lower molecular weight component to be controlled selectively. | 05-27-2010 |
20100137533 | HINDERED POLYALICYCLIC ALKYL CATALYSTS AND THEIR USE IN A GAS-PHASE POLYMERIZATION REACTOR - Embodiments of the present invention include a method of polymerizing olefins comprising contacting olefins with a catalyst composition made by the process of combining a hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form a catalyst composition. Embodiments of the present invention also include catalyst compositions comprising a hindered polyalicyclic alkyl catalyst precursor made by the process of combining the hindered polyalicyclic alkyl catalyst precursor with a particulate inorganic oxide for a deposition time greater than 2 hours to form the catalyst composition. In one embodiment, the hindered polyalicyclic alkyl catalyst precursor is formed by first combining an acid, a compound having the formula RX, and a metal oxide selected from the group consisting of Group 3 to Group 10 oxide compounds to produce a catalyst precursor; characterized in that R is selected from the group consisting of hindered polyalicyclic alkyls, and substituted derivatives thereof, and X is selected from the group consisting of any suitable leaving group. | 06-03-2010 |
20100152398 | Catalyst Composition And A Process For The Oligomerization Of Ethylene - The present invention relates to a catalyst composition for the oligomerization of ethylene comprising at least one transition metal bisphenolate compound and at least one cocatalyst. The transition metal bisphenolate is a zirconium bisphenolate. | 06-17-2010 |
20100160582 | CATALYSTS FOR CATALYTIC CHAIN TRANSFER - Cobaloxime derivatives and methods of producing cobaloxime derivatives are disclosed herein. Methods of producing decolorized homo- and co-polymers through polymerization of monomers in presence of the cobaloxime derivatives and decolorization of the produced polymer by exposing the polymer to a sorbent and, optionally, a solvent are also disclosed herein. | 06-24-2010 |
20100184931 | 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. | 07-22-2010 |
20100190945 | METHOD FOR THE PRODUCTION OF THIOPHENE OLIGOMERS - The present invention is based on a process for oligothiophene synthesis at elevated temperatures and low catalyst concentrations. | 07-29-2010 |
20100222531 | CATALYSTS FOR OLEFIN POLYMERIZATION - Transition metal complexes of selected monoanionic phosphine ligands, which also contain a selected Group 15 or 16 (IUPAC) element and which are coordinated to a Group 3 to 11 (IUPAC) transition metal or a lanthanide metal, are polymerization catalysts for the (co)polymerization of olefins such as ethylene and α-olefins, and the copolymerization of such olefins with polar group-containing olefins. These and other nickel complexes of neutral and monoanionic bidentate ligands copolymerize ethylene and polar comonomers, especially acrylates, at relatively high ethylene pressures and surprisingly high temperatures, and give good incorporation of the polar comonomers and good polymer productivity. These copolymers are often unique structures, which are described. | 09-02-2010 |
20100227991 | SOLID TITANIUM CATALYST COMPONENT, CATALIST FOR OLEFIN POLYMERIZATION AND PROCESS FOR POLYMERIZING OLEFIN - The present invention provides an olefin polymerization catalyst, which is free of polyfunctional aromatic compounds and has a large particle diameter, and a solid titanium component (I) which forms the catalyst. The olefin polymerization catalyst comprises a solid titanium component (I), an organometallic compound (II) and optionally an electron donor (III) wherein the solid titanium component (I) comprising titanium, magnesium and halogen is obtainable by allowing a magnesium compound (A) having no reducing ability in a liquid state to contact with an ester compound (B) represented by the following formula (1) and a liquid titanium compound (C) in a specific order, | 09-09-2010 |
20100234547 | Polymerization Catalysts, Methods of Making, Methods of Using, and Polyolefin Products Made Therefrom - Olefin polymerization catalyst systems including a high molecular weight catalyst compound and a low molecular weight catalyst compound, and methods of making same are provided. High molecular weight catalysts include metallocene catalysts and low molecular weight catalysts include non-metallocene compounds including biphenyl phenol compounds. Generally catalyst systems may include less than about 5.0 mol % of the high molecular weight catalyst compound relative to said low molecular weight catalyst. Methods for olefin polymerization including the aforementioned catalyst systems, and polyolefins and products made therefrom. | 09-16-2010 |
20100240849 | Method for Polymerizing Cyclic Olefin Having Polar Functional Group, Olefin Polymer Produced Thereby, Optical Anisotropic Film Comprising the Same, and Catalyst Composition for Polymerizing the Cyclic Olefin - Disclosed is a method of producing a cyclic olefin polymer having a polar functional group, an olefin polymer produced by using the method, an optical anisotropic film including the olefin polymer, and a catalyst composition for producing the cyclic olefin polymer. In the olefin polymerization method and the catalyst composition for polymerization, since deactivation of the catalyst due to polar functional groups of monomers is capable of being suppressed, it is possible to produce polyolefins having a high molecular weight at high polymerization yield during polyolefin polymerization. Furthermore, the cyclic olefin having the polar functional groups has excellent polymerization reactivity and the activity of the catalyst composition including the same is maintained under a variable polymerization condition. Accordingly, the present invention is very useful for a mass-production process. | 09-23-2010 |
20100267910 | CATALYST SYSTEM FOR OLEFIN POLYMERIZATION COMPRISING PHENANTHROLINE-COMPRISING IRON COMPLEXES - Catalyst system for olefin polymerization comprising (a) at least one phenanthroline-comprising iron complex, (b) an organic or inorganic support, (c) optionally one or more activators, (d) optionally one or more metal compounds of group 1, 2 or 13 of the Periodic Table and (e) optionally further catalysts suitable for olefin polymerization, and also their use in the polymerization of olefins. | 10-21-2010 |
20100286350 | BI-COMPONENT CATALYST SYSTEM FOR ISOPRENE OR BUTADIENE CIS 1, 4-POLYMERIZATION AND POLYMERIZATION PROCESS - An isoprene or butadiene cis 1,4-selective polymerization catalyst system together with its polymerization method is provided. This catalyst system is composed of NCN-imine pincer type rare earth metal complex of formula [2,6-(CH═N—R | 11-11-2010 |
20100292425 | METHOD AND SYSTEM FOR FORMING A PRECURSOR COMPOUND FOR NON-BRIDGED UNSYMMETRIC POLYOLEFIN POLYMERIZATION CATALYST - The present techniques relates generally to polyolefin catalysts and, more specifically, to preparing a precursor compound for an unsymmetric metallocene catalyst, for using the precursor compound to prepare catalysts, and for employing the precursor compounds to prepare catalysts for polyolefin polymerizations. | 11-18-2010 |
20100311930 | New Tridentate Ligand Compounds with Imino Furan Units, Method for Manufacturing Said Compounds, and their use in the Preparation of Catalysts for the Homopolymerisation and Copolymerisation of Ethylene and Alpha-Olefins - The present invention relates to new tridentate ligand compounds with imino furan units, to a method for manufacturing said compounds and to their use in the preparation of catalysts for the homopolymerisation or copolymerisation of ethylene and alpha-olefins. | 12-09-2010 |
20110009581 | METHOD OF PREPARING A CATALYTIC COMPOSITION FOR DIMERIZATION, CO-DIMERIZATION AND OLIGOMERIZATION OF OLEFINS - The present invention describes a method of preparing a catalytic composition used for oligomerization, co-dimerization or polymerization of olefins, wherein the compound obtained upon contacting at least one iron compound with at least one nitrogen-containing compound is subjected to an oxidation stage prior to being mixed with an activating agent and optionally with a solvent. | 01-13-2011 |
20110034653 | Catalyst Components Based on Fulvene Complexes - The present invention discloses metallic complexes based on hydroxyl-carbonyl fulvene ligands, their method of preparation and their use in the oligomerisation or polymerisation of ethylene and alpha-olefins. | 02-10-2011 |
20110054130 | CATALYST COMPOSITION AND PROCESS FOR PREPARING LINEAR ALPHA-OLEFINS - The present invention relates to a catalyst composition for the oligomerization of ethylene, comprising a transition metal compound of the general formula MX | 03-03-2011 |
20110124831 | SELF-ASSEMBLED OLEFIN POLYMERIZATION CATALYST - The present invention relates to a self-assembled olefin polymerization catalyst comprising a transition metal compound according to formula (I) L | 05-26-2011 |
20110196118 | TELECHELIC POLYOLEFIN - A process of preparing a telechelic polyolefin is disclosed by performing steps 1a, 2, and 1b in this order in the presence of an olefin polymerizing catalyst and subsequently performing step 3 if necessary. Step 1a involves reacting the olefin polymerizing catalyst with a polar-group-containing olefin (C). Step 2 involves reacting the resultant compound of step 1a with at least one olefin (D) selected from ethylene and olefins having 3 to 20 carbon atoms n times wherein n is an integer of 1 or more, provided that when n is an integer of 2 or more, the olefins (D) used in the respective contact operations are different in kind or composition. Step 1b involves reacting the resultant compound of step 2 with the same or different polar-group-containing olefin (C). Step 3 involves chemically converting the Y′ group in the general formula (II) to a different group. | 08-11-2011 |
20110213110 | NOVEL METAL COMPLEX AND METHOD FOR PRODUCING ALPHA-OLEFIN POLYMER AND METHOD FOR PRODUCING ALPHA-OLEFIN/(METH)ACRYLATE COPOLYMER USING THE SAME - A novel catalyst component for producing a crystalline α-olefin polymer or α-olefin/(meth)acrylate copolymer having few branches, especially a polymer having a high molecular weight, and a method for producing an α-olefin polymer or an α-olefin/(meth)acrylate copolymer using the catalyst component. | 09-01-2011 |
20110263804 | PROCESS FOR THE PREPARATION OF A CATALYST COMPOSITION FOR DIMERIZATION, CODIMERIZATION AND OLIGOMERIZATION OF OLEFINS - This invention describes a process for the preparation of a catalytic composition that can be used for oligomerization, codimerization, or polymerization of olefins. This invention also describes the catalytic composition that can be obtained by said process for the preparation and its use for oligomerization, codimerization, or polymerization of olefins. | 10-27-2011 |
20110301310 | Pyridyldiamido Transition Metal Complexes, Production And Use Thereof - Pyridyldiamido transition metal complexes are disclosed for use in alkene polymerization. | 12-08-2011 |
20110313119 | HIGH TEMPERATURE SOLUTION POLYMERIZATION PROCESS - A catalyst composition comprising one or more metal complexes of a multifunctional Lewis base ligand comprising a bulky, planar, aromatic- or substituted aromatic-group and polymerization processes employing the same, especially continuous, solution polymerization of one or more α-olefins at high catalyst efficiencies are disclosed. | 12-22-2011 |
20110319579 | Catalyst Systems for the Catalytic Oligomerization of Olefinic Monomers - The present invention relates to a ligand and its use in a catalyst for the oligomerization of olefinic monomers, the ligand having the general formula (VI); | 12-29-2011 |
20120010379 | CATALYST CARRIER BASED ON SILICA GEL - The present invention relates to spherical beads comprising at least one metal and/or semimetal oxide, having a mean diameter in the range from 10 to 120 μm, a BET surface area in the range from 400 to 800 m | 01-12-2012 |
20120259081 | REACTOR CONTINUITY - A supported catalyst system comprising a phosphinimine ligand containing catalyst on a porous inorganic support treated with a metal salt has improved reactor continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation. The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent. | 10-11-2012 |
20120277388 | POLYETHYLENE PREPARED WITH SUPPORTED LATE TRANSITION METAL CATALYST SYSTEMS - The present invention relates to the field of ethylene polymerisation with a supported late transition metal catalyst system. | 11-01-2012 |
20120289670 | Fluorinated Alkoxy-Imino Catalyst Components - This invention relates to fluorinated alkoxy-imino metallic complexes and their use in catalyst systems for the polymerisation or oligomerisation of ethylene and alpha-olefins. | 11-15-2012 |
20120309915 | ETHYLENE POLYMERIZATION PROCESS AND POLYOLEFIN - A polymerization to form a branched polyolefin, in which polymerization an ethylene copolymerization catalyst and an ethylene oligomerization catalyst form a series of ethylene oligomers that are α-olefins are both present, gives an improved polyethylene if the oligomerization catalyst has a to relatively high Schulz-Flory constant. | 12-06-2012 |
20120309916 | OLEFIN POLYMERIZATION PROCESS - An ethylene oligomerization catalyst that oligmerizes ethylene to a series of α-olefins and that has a Schulz-Flory constant of about 0.75 to 0.995 produces a stream of α-olefins. This stream is then added to a vessel containing ethylene and a copolymerization catalyst that copolymerizes ethylene and α-olefins. The resulting branched polyethylene often has good processing properties. The good processing is presumably due to the presence of “long chain branching”. Such polymers are useful for films and other packaging materials, and for molding resins for molding parts such as industrial, automotive or electrical parts. | 12-06-2012 |
20120322963 | METHOD FOR CHEMICALLY PRODUCING POLY(N-ALKYLCARBAZOLE) COLUMNAR STRUCTURE - A novel nanosized or microsized material having electroconductivity that can be produced simply and in a large amount is provided. A method for producing a poly(N-alkylcarbazole) columnar structure having electroconductivity obtained by chemically polymerizing N-alkylcarbazole including alkyl having 1 to 4 carbons by adding an oxidizing agent to a solution obtained by dissolving the N-alkylcarbazole in a solvent is provided. | 12-20-2012 |
20130030135 | Vinyl-Terminated Macromonomer Oligomerization - Vinyl-terminated macromonomer oligomerization, namely, a process to produce polymacromonomers comprising contacting a vinyl-terminated macromonomer with a catalyst system capable of oligomerizing vinyl-terminated macromonomer, in the presence of an aluminum containing compound, a zinc containing compound, or a combination thereof, under polymerization conditions to produce a polymacromonomer, and polymacromonomers produced thereby. Also, polymacromonomers having a degree of polymerization greater than 10, a glass transition temperature Tg of less than 60° C., and an Mn of greater than or equal to about 5000 Da. | 01-31-2013 |
20130096271 | SALALEN LIGANDS AND ORGANOMETALLIC COMPLEXES - Use of homogeneous catalytic systems which include as a pre-catalyst a complex of a Group IV metal and a salalen ligand in the polymerization of alpha-olefins, is disclosed. The alpha-olefin polymers obtained are characterized by controlled levels of tacticity. Also disclosed are novel salalen ligands and novel complexes thereof with Group IV metals. | 04-18-2013 |
20130137841 | SELF-ASSEMBLED MULTI-NUCLEAR CATALYST FOR OLEFIN POLYMERIZATION - A self-assembled olefin polymerization catalyst comprising a transition metal complex according to formula (I) A-[(L | 05-30-2013 |
20130172500 | Passivated Supports for Use with Olefin Polymerization Catalysts - A phosphinimine catalyst immobilized on a passivated inorganic oxide support, had high activity at low co-catalyst concentrations and gave, under gas phase polymerization conditions, ethylene copolymer with a high molecular weight. A method of making a passivated silica support involves treatment of silica with an organoaluminum compound, a diorganomagnesium compound and a source of chloride (to make MgCl | 07-04-2013 |
20130310529 | METAL COMPLEXES OF SALAN-TYPE LIGANDS AND USES THEREOF AS CATALYSTS FOR POLYMERIZATION OF ALPHA-OLEFINS - Use of homogeneous catalytic systems which include as a pre-catalyst a complex of a group 4 metal and a Salan ligand in the polymerization of alpha-olefins, is disclosed. The Salan ligand is characterized by a sequential diamino-containing skeleton unit which is non-symmetric, and the pre-catalysts can also be such that are devoid of a symmetry element. The disclosed polymerization results in alpha-olefin polymers such as polypropylene which are characterized by high levels of tacticity. Also disclosed are novel Salan ligands and novel complexes thereof with group 4 metals. | 11-21-2013 |
20140011971 | IRON COMPLEXES AND METHODS FOR POLYMERIZATION - Provided are methods of preparing polymers, such as polyisoprene, polybutadiene, polypiperylene, polycyclohexadiene, poly-β-farnesene, or poly-β-myrcene, using iron complexes. Also provided are novel iron complexes, pre-catalysts, intermediates, and ligands useful in the inventive polymerization system. | 01-09-2014 |
20140073753 | PROCESS FOR MANUFACTURE OF CONJUGATED POLYMER COMPOSITIONS FOR SOLAR CELL APPLICATIONS - The present disclosure relates to a process for the synthesis of a conducting polymer comprising a benzothiadiazole acceptor and indeno-fluorene donor of formula [IV]. | 03-13-2014 |
20140121343 | Novel Catalyst Compositions and Methods of Making and Using Same - An imine phenol compound having Structure I: | 05-01-2014 |
20140206829 | ISOSELECTIVE POLYMERIZATION OF EPOXIDES - The present invention provides novel bimetallic complexes and methods of using the same in the isoselective polymerization of epoxides. The invention also provides methods of kinetic resolution of epoxides. The invention further provides polyethers with high enantiomeric excess that are useful in applications ranging from consumer goods to materials. | 07-24-2014 |
20140213747 | Novel Polymer Compositions and Methods of Making and Using Same - A polymer reactor-blend comprising at least a first component having a polydispersity index of greater than about 20 and is present in an amount of from about 1 wt. % to about 99 wt. % based on the total weight of the polymer and a second component having a polydispersity index of less than about 20 and is present in an amount of from about 1 wt. % to about 99 wt. % based on the total weight of the polymer wherein a molecular weight distribution of the second component lies within a molecular weight distribution of the first component. | 07-31-2014 |
20140256894 | DIFLUORO BENZOTRIAZOLYL ORGANIC SEMICONDUCTOR MATERIAL, PREPARATION METHOD AND USE THEREOF - The present invention relates to solar cells and discloses a difluoro benzotriazolyl organic semiconductor material and preparation method and use thereof. The organic semiconductor material is represented by formula (I), | 09-11-2014 |
20140378634 | Thio-Salalen Catalyst - Catalysts comprising thio-salalen ligands. Also, catalyst systems comprising the catalyst and an activator; methods to prepare the ligands, catalysts and catalyst systems; processes to polymerize olefins using the catalysts and/or catalyst systems; and the olefin polymers prepared according to the processes. | 12-25-2014 |
20140378635 | Salenol Catalyst - Catalysts comprising salenol ligands are disclosed herein. Also, catalyst systems comprising the catalyst and an activator; methods to prepare the ligands, catalysts and catalyst systems; processes to polymerize olefins using the catalysts and/or catalyst systems; and the olefin polymers prepared according to the processes. | 12-25-2014 |
20150087795 | LIGANDS DESIGNED TO PROVIDE HIGHLY ACTIVE CATALYST COMPLEXES - A series of ligands with site specific electron donating substituents that form a catalyst complex with a transition metal and are suitable for catalysis of atom transfer radical reactions, including ATRP are described. Faster catalysis rates were observed allowing for low catalyst concentrations and linear increases in molecular weight with monomer conversion, and narrow molecular weight distributions. Cyclic voltammetry revealed that increasing the strength and number of conjugated electron donating groups resulted in more stable complexes and larger ATRP equilibrium constants. | 03-26-2015 |
20150105525 | POLYMERIZATION INITIATING SYSTEM AND METHOD TO PRODUCE HIGHLY REACTIVE OLEFIN FUNCTIONAL POLYMERS - A method for producing highly reactive olefin polymers wherein at least 50 mol. % of the polymer chains have terminal double bonds, and a novel polymerization initiating system for accomplishing same. | 04-16-2015 |
20150133615 | Spray-Dried Catalyst Compositions and Polymerization Processes Employing the Same - Spray-dried catalyst compositions comprising a transition metal complex and polymerization processes employing the same are disclosed herein. An embodiment provides a spray-dried catalyst composition comprising a transition metal catalyst component represented by the following formula: (I) and polymerization process employing the same. | 05-14-2015 |
20150291717 | PREPARATION OF LOW-VISCOSITY POLYMERS - The present invention relates to a method for preparing a polymer composition, said method comprising the steps of: a) preparing a reaction mixture comprising as component A) an ethylenically unsaturated monomer or a mixture of ethylenically unsaturated monomers and as component B) a 1-alkene or a mixture of 1-alkenes; b) adding a Co(II) complex as a catalytic chain transfer agent to the reaction mixture; c) adding a radical initiator; and d) reacting the reaction mixture to obtain the polymer composition, wherein the total amount of the radical initiator added to the reaction mixture is at least 0.05% by weight relative to the total weight of components A) and B). The present invention also relates to the use of a Co(II) complex as catalytic chain transfer agent for the polymerization of a reaction mixture comprising an ethylenically unsaturated monomer or a mixture of ethylenically unsaturated monomers, a radical initiator, and a 1-alkene or a mixture of 1-alkenes, wherein the total amount of the radical initiator added to the reaction mixture is at least 0.05% by weight relative to the total weight of the ethylenically unsaturated monomer or mixture of ethylenically unsaturated monomers and the 1-alkene or mixture of 1-alkenes. | 10-15-2015 |
20150329577 | OXO-NITROGENATED COMPLEX OF COBALT, CATALYTIC SYSTEM COMPRISING SAID OXO-NITROGENATED COMPLEX AND PROCESS FOR THE (CO) POLYMERIZATION OF CONJUGATED DIENES - The present invention relates to an oxo-nitrogenated complex of cobalt having the general formula (I) wherein the residues R | 11-19-2015 |
20160200840 | AQUEOUS ATRP IN THE PRESENCE OF AN ACTIVATOR REGENERATOR | 07-14-2016 |