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US20150018503 Methods for Producing Fluorided-Chlorided Silica-Coated Alumina Activator-Supports and Catalyst Systems Containing the Same  
Methods for the preparation of fluorided-chlorided silica-coated alumina activator-supports are disclosed. These activator-supports can be used in catalyst systems for the production of...
US20110218309 Preparation of ultra high molecular mass polyethylene and ultra high molecular mass polyethylene having improved crosslink ability prepared thereb  
The invention pertains to a method for the preparation of ultra high molecular mass polyethylene by polymerization in suspension or in gas phase in the presence of a chromium catalyst sitting on...
US20110060111 Production of Polyethylene  
The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable...
US20150119540 Novel Aluminum Alkyl With C5 Cyclic and Pendent Olefin Polymerization Catalyst  
This invention relates to organoaluminum compounds, to organoaluminum activator systems, preferably supported, to polymerization catalyst systems containing these activator systems and to...
US20150203614 Long Chain Branched Polymers and Methods of Making Same  
A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long...
US20130137839 Long Chain Branched Polymers and Methods of Making Same  
A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long...
US20100317813 SUPPORTED CATALYST FOR THE PREPARATION OF (CO)MONOMERS OF ETHYLENICALLY UNSATURATED MONOMERS  
The present invention is directed to a supported catalyst comprising 1. a precursor comprising a solid particulate support material in the form of mesoporous silicate structure MCM-48 wherein the...
US20130337210 GAS PHASE POLYMERISATION OF ETHYLENE  
The disclosed process is for the production of polyethylene by gas phase polymerisation of ethylene in the presence of a supported chromium oxide based catalyst which is modified with an amino...
US20110294016 POLYPROPYLENE RESIN COMPOSITION FOR USE IN FORMATION OF MICROPOROUS MEMBRANE  
[Object] To provide a polypropylene resin composition for use in the formation of a microporous membrane having excellent heat resistance and low thermal shrinkage ratio. [Solution] A...
US20110130531 Methods for Polymerization Using Spray Dried and Slurried Catalyst  
Methods for gas phase olefin polymerization are provided. The method can include combining a spray dried catalyst system with a diluent to produce a catalyst slurry. The catalyst system can...
US20130211021 METHOD FOR PREPARING POLYPROPYLENE USING TRANSITION METAL COMPOUND CONTAINING THIOPHENE-FUSED CYCLOPENTADIENYL LIGAND  
The present invention relates to a preparation method for polypropylene that comprises polymerizing a propylene monomer in the presence of a catalyst comprising a novel transition metal compound....
US20120232229 CATALYST SYSTEMS CONTAINING A BRIDGED METALLOCENE  
The present invention provides polymerization processes utilizing a catalyst system containing an ansa-metallocene and a second metallocene compound for the production of olefin polymers.
US20090326174 CLAY ACTIVATION OF PD(II) AND NI(II) COMPLEXES  
A clay-supported complex that includes a metal complex containing a phosphinobenzenesulfonate ligand coordinated to Pd(II) or Ni(II), and a clay combined with the metal complex. The metal complex...
US20130274425 Methods To Increase Oligomer Viscosity And Uses Thereof  
This invention relates to processes for increasing the viscosity of an oligomer composition including contacting the oligomer composition comprising one or more vinyl terminated oligomer with a...
US20120095174 Fluorinated Catalyst Systems and Methods of Forming the Same  
Supported catalyst systems and methods of forming the same are described herein. In one specific embodiment, the methods generally include providing an inorganic support material and contacting...
US20140288243 POLYACETYLENE AND CHLORINATED POLYACETYLENE AND PRODUCTION PROCESSES THEREOF  
The present invention is directed to a heterogeneous gas phase polymerization process to produce true polyacetylene (PA; C2H2) in powder form, and the resultant PA product. The present invention...
US20140296453 Catalyst Compositions for the Polymerization of Olefins  
Catalyst compositions containing N,N-bis[2-hydroxidebenzyl]amine transition metal compounds are disclosed. Methods for making these transition metal compounds and for using such compounds in...
US20090275713 Method for promoting Michael addition reactions  
Homogeneously dispersed solid reaction promoters having an average particle size from 0.01 μm to 500 μm are disclosed for preparing curable mixtures of at least one Michael donor and at least one...
US20130211018 MODIFIED CATALYST SUPPORTS  
The invention covers a supported catalyst system prepared according to a process comprising the following step: i). impregnating a silica-containing catalyst support having a specific surface area...
US20140030460 ETHYLENE-BASED POLYMER, MANUFACTURING METHOD OF ETHYLENE-BASED POLYMER AND MANUFACTURING METHOD OF CATALYST FOR POLYMERIZATION, AND MOLDED ARTICLE OF HOLLOW PLASTICS CONTAINING ETHYLENE-BASED POLYMER AND USE THEREOF  
An object of the invention is to provide an ethylene-based polymer excellent in moldability and durability, and also excellent in the balance of stiffness and durability, and to provide a molded...
US20120010378 Catalyst Precursor Particles, Their Preparation and Use  
A method for preparing a catalyst precursor for an olefin polymerization catalyst involves the use of aqueous or alcoholic solutions of a chromium salt and of boric acid and aluminium carboxylate...
US20140107301 Bridged Metallocene Catalyst Systems With Switchable Hydrogen and Comonomer Effects  
The present invention provides polymerization processes utilizing an ansa-metallocene catalyst system for the production of olefin polymers. Polymers produced from the polymerization processes...
US20120190803 HALF-METALLOCENE COMPOUNDS AND CATALYST COMPOSITIONS  
The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these...
US20130071663 ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE, ITS PRODUCTION AND USE  
Ultra-high molecular weight polyethylene has a molecular weight greater than 20×106 gm/mol as determined by ASTM 4020 or by size exclusion chromatography (SEC) and is produced by polymerizing...
US20100204419 POLYMERISATION METHOD  
Disclosed herein is a method of forming a polymer, wherein the polymer is formed by a radical polymerisation reaction initiated by a solid oxide compound.
US20130345376 Aluminoxane Catalyst Activators Containing Carbocation Agents, and use thereof in Polyolefin Catalysts  
This invention relates to an activator composition comprising (i) an organoaluminum compounds; (ii) a carbocation compound of the formula R1 (X)n; wherein R1 is a hydrocarbyl; n is from 1 to the...
US20120108764 HALF-METALLOCENE CATALYST COMPOSITIONS AND THEIR POLYMER PRODUCTS  
The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these...
US20110065874 HALF-METALLOCENE CATALYST COMPOSITIONS AND THEIR POLYMER PRODUCTS  
The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these...
US20130090400 PROCESS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYETHYLENE  
In a process for producing polyethylene having a molecular weight of at least 1×106 g/mol as determined by ASTM 4020, ethylene is contacted under polymerization conditions with a slurry of a...
US20100076167 SILICA-COATED ALUMINA ACTIVATOR-SUPPORTS FOR METALLOCENE CATALYST COMPOSITIONS  
Silica-coated alumina activator-supports, and catalyst compositions containing these activator-supports, are disclosed. Methods also are provided for preparing silica-coated alumina...
US20140200317 Methods for Reducing Static Charge of a Catalyst and Methods for Using the Catalyst to Produce Polyolefins  
Catalysts and methods for making and using the same are provided. The method for fabricating a catalyst may includes contacting a supported catalyst with a monomer under conditions that reduce an...
US20130085245 Methods for Reducing Static Charge of a Catalyst and Methods for Using the Catalyst to Produce Polyolefins  
Catalysts and methods for making and using the same are provided. The method for fabricating a catalyst may includes contacting a supported catalyst with a monomer under conditions that reduce an...
US20150099679 Processes for Preparing Low Viscosity Lubricants  
Disclosed are processes for forming an oligomer product by contacting a feedstock olefin containing trisubstituted olefins with a solid acid catalyst. The oligomer product can be formed at an...
US20090240010 ALUMINA-SILICA ACTIVATOR-SUPPORTS FOR METALLOCENE CATALYST COMPOSITIONS  
The present invention provides activator-supports containing alumina-silica compounds with high levels of alumina, and polymerization catalyst compositions employing these activator-supports....
US20090163681 Fast Activating Catalyst  
A method of preparing a catalyst comprising aging a silica support in an alkaline solution to produce an alkaline aged silica support, removing at least a portion of the alkaline solution from the...
US20100222529 Homo- or Co-polymers of Ethylene with Combination of Processability and Toughness Properties  
The present invention discloses a homo- or co-polymer of ethylene characterised in that it combines the properties of: a) melt strength MS≧0.021p−0.131 wherein melt strength MS is expressed in N...
US20150080541 CATALYST FOR THE POLYMERISATION OF OLEFINS, PROCESS FOR ITS PRODUCTION AND USE  
The present invention provides a new process for preparing a catalyst for the gas phase polymerization of olefins wherein the sequence of addition of the catalyst components and the selection of...
US20140155561 CONTROLLING RESIN PROPERTIES IN A GAS PHASE POLYMERIZATION PROCESS  
Methods for dramatically altering the processability of ethylene copolymers made with a supported phosphinimine polymerization catalyst. The method involves changing the polymerization reactor...
US20130072649 PROCESS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYETHYLENE  
In a process for producing high molecular weight polyethylene, ethylene is contacted with a slurry of a catalyst composition comprising a Group 4 metal complex of a phenolate ether ligand under...
US20120101240 PREPARATION OF PRECIPITATED ZN PP CATALYSTS WITH INTERNAL PORE STRUCTURE USING NANOPARTICLES  
Process for the preparation of a catalyst being in the form of solid particles comprising the steps of preparing a solution of a complex of a metal which is selected from one of the groups 1 to 3...
US20090131614 Supported Polymerisation Catalysts  
A supported polymerisation catalyst system comprises: (a) a polymerisation catalyst, (b) a cocatalyst, and (c) a porous support, and is characterised in that the porous support has been pretreated...
US20140378632 MODIFIED PHOSPHINIMINE CATALYSTS FOR OLEFIN POLYMERIZATION  
Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
US20140357818 MODIFIED PHOSPHINIMINE CATALYSTS FOR OLEFIN POLYMERIZATION  
Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
US20140357817 MODIFIED PHOSPHINIMINE CATALYSTS FOR OLEFIN POLYMERIZATION  
Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
US20120316297 Modified phosphinimine catalysts for olefin polymerization  
Olefin polymerization is carried out with a supported phosphinimine catalyst which has been treated with a long chain substituted amine compound.
US20110105705 Metallocene Supported Catalyst Composition and a Process for the Preparation of Polyolefin Using the Same  
The invention relates to a metallocene supported catalyst composition and a process for the preparation of polyolefin using the same. A metallocene supported catalyst composition according to the...
US20100160579 PROCESS FOR PRODUCING BROADER MOLECULAR WEIGHT DISTRIBUTION POLYMERS WITH A REVERSE COMONOMER DISTRIBUTION AND LOW LEVELS OF LONG CHAIN BRANCHES  
The present invention provides a polymerization process which is conducted by contacting an olefin monomer and at least one olefin comonomer in the presence of hydrogen and a metallocene-based...
US20150073107 ANSA-METALLOCENE COMPOUND AND METHOD FOR PREPARING SUPPORTED CATALYST USING THE SAME  
This disclosure relates to an ansa-metallocene compound of a novel structure that can provide various selectivities and activities to polyolefin copolymers, a preparation method thereof, and a...
US20100280199 COMPOSITIONS THAT CAN PRODUCE POLYMERS  
This invention provides a compositions that are useful for polymerizing at least one monomer into at least one polymer.
US20090215970 Blow Molding Polyethylene Resins  
Disclosed herein are various processes, including continuous fluidized-bed gas-phase polymerization processes for making a high strength, high density polyethylene copolymer, comprising...
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