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9035000 Polyolefin production using an improved catalyst system  
Polyolefin production using an improved catalyst system and, in particular, a method for production of a polyolefin is disclosed. One or more monomers are contacted with a catalyst system. The...
8969493 Process and apparatus for continuously polymerizing cationically polymerizable monomers  
The present invention relates to a process and to an apparatus for continuous living polymerization of cationically polymerizable monomers, in which at least three feedstocks are mixed in one or...
8901260 Heterogeneous ethylene alpha-olefin interpolymers  
An interpolymer of ethylene and at least one alpha-olefin is claimed, wherein the ethylene interpolymer is characterized as having an average Mv and a valley temperature between the interpolymer...
8859450 Solid catalyst component for olefin polymerization  
A solid catalyst component for olefin polymerization, comprising titanium atoms, magnesium atoms, halogen atoms and hydrocarbyloxy groups, wherein the following filtrate contains titanium atoms in...
8759460 Process for the polymerization of ethylene, and ethylene polymers having broad molecular weight distribution and long-chain branching  
New ethylene polymers having broad molecular weight distribution and long-chain branching, above all at high molecular weight fractions; the polymers have strain hardening equal or higher than 1.4...
8716416 Magnesium-compound supported nonmetallocene catalyst and preparation thereof  
The present invention relates to a magnesium compound-supported nonmetallocene catalyst, which is produced by directly contacting a catalytically active metallic compound with a nonmetallocene...
8633286 Catalyst compositions comprising support materials having an improved particle-size distribution  
A catalyst composition that includes a support material having an improved particle-size distribution is provided. Processes for producing polyolefin composition also are provided. Polymers and...
8629075 Solid titanium catalyst component, olefin polymerization catalyst, and process for producing olefin polymer  
The present invention provides a process for producing an α-olefin polymer comprising polymerizing or copolymerizing (a) C3 or higher α-olefin(s) in the presence of an olefin polymerization...
8604144 Procatalyst composition with substituted amide ester internal electron donor  
Disclosed are procatalyst compositions having an internal electron donor which includes a substituted amide ester and optionally an electron donor component. Ziegler-Natta catalyst compositions...
8604143 Catalysts for polymerization of isoprene and preparations and uses thereof  
Disclosed are catalyst compositions for isoprene polymerization formed from components comprising (A) at least one titanium halide; (B) at least one organic aluminum compound comprising at least...
8592537 Catalyst system for the polymerization of olefins  
A catalyst system for the polymerization of olefins comprising (A) a catalyst component obtained by reacting a Mg(OR1)(OR2) compound, in which R1 and R2 are identical or different and are each an...
8501884 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...
8497328 Catalyst components for the polymerization of olefins and catalysts therefrom obtained  
A solid catalyst component comprising Ti, Mg, halogen and a couple of monofunctional electron donor compounds MD1 and MD2 selected from esters and ethers, said donors being present in amounts such...
8481658 Method for transitioning between incompatible olefin polymerization catalyst systems  
A method for transitioning from a Ziegler-Natta to a Phillips catalyst system for the olefin polymerization reaction in one reactor, preferably a gas phase reactor, is described. The method...
8344080 Catalyst for olefin polymerization and method of preparation thereof  
A catalyst for olefin polymerization and method of preparing the same are disclosed.
8344079 Molar ratio modifications to larger polyolefin catalysts  
Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of an olefin containing a solid titanium catalyst component having a substantially...
8288606 Propylene polymer catalyst donor component  
A solid, hydrocarbon-insoluble, catalyst component useful in polymerizing olefins containing magnesium, titanium, and halogen further contains an internal electron donor comprising a compound...
8283425 Magnesium dichloride-ethanol adducts and catalyst components obtained therefrom  
Adducts are provided comprising MgCl2, ethanol and a Lewis base (LB), said compounds being present in molar ratios defined by the following formula MgCl2.(EtOH)n(LB)p in which n is from 2 to 6 and...
8236908 Components and catalysts for the polymerization of olefins  
A solid catalyst component for olefin polymerization comprising a titanium atom, a magnesium atom, a halogen atom, and a cycloheptapolyenedicarboxylic diester; a production method of the solid...
8227563 Process for the preparation of polymer of 1-butene  
A process for the preparation of 1-butene homopolymers or 1-butene/alpha olefin copolymers wherein the alpha olefins are selected from ethylene, propylene or alpha olefins of formula CH2═CHZ...
8216957 Catalyst preparation using H2  
The invention refers to a process for preparing a Group 2 metal/transition metal olefin polymerization catalyst component in particulate form having improved polymerization properties due to the...
8173755 Ultra high molecular weight ethylene copolymer powder  
The present invention relates to an ultrahigh-molecular-weight ethylene copolymer powder having an intrinsic viscosity (η) of 10 dl/g to 34 dl/g, obtainable by copolymerizing ethylene and at least...
8138264 Bimodal polyethylene resins that have high stiffness and high ESCR  
A bimodal polyethylene having a high density ranging from about 0.955 to about 0.959 g/cc, an improved environmental stress cracking resistance (ESCR) of from about 400 to about 2500 hours, and an...
8124673 Low-viscosity drag reducer  
Low-viscosity drag reducers, systems for delivering low-viscosity drag reducers, and methods of making low-viscosity drag reducers are disclosed. The low-viscosity drag reducers have a viscosity...
8110644 Bimodal pipe resin and products made therefrom  
Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from 0.930 g/cc to 0.960 g/cc, and a molecular weight distribution of from 10 to 25, wherein an article formed...
8105970 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...
8071499 Catalyst components for the polymerization of olefins and catalysts therefrom obtained  
A catalyst component comprising Ti, Mg, Al, Cl, and optionally ORI groups in which RI is a C1-C20 hydrocarbon group, optionally containing heteroatoms, up to an amount such as to give a molar...
8012903 Methods to prepare catalyst compositions comprising small silica support materials  
Methods are provided to prepare a catalyst system that includes at least one titanium compound, at least one magnesium compound, at least one electron donor compound, at least one activator...
8003741 Ziegler-Natta catalyst  
The present invention relates generally to catalysts, to methods of making catalysts, to methods of using catalysts, to methods of polymerizing, and to polymers made with such catalysts. More...
7999048 Process for producing prepolymerization catalyst for polymerization of olefin and process for producing olefin polymer  
There is provided a process for producing a prepolymerization catalyst for polymerization of an olefin, said process comprising the steps of feeding, to a polymerization reactor, an olefin and a...
7999047 Magnesium methoxide based catalyst precursors and catalyst components obtained therefrom  
Catalyst precursors comprising Mg, Ti, OMe and OR groups that are in molar ratios defined by the formula MgTin(OMe)(p)(OR)x in which n is from 0.1 to 1, p is ≧(2+4n), x is from 0 to 1 and R is...
7985814 Main catalyst component for olefin polymerization, a process for preparing the same and a catalyst comprising the same  
The present invention provides a main catalyst component for olefin polymerization, which is prepared by a process comprising the steps of: (i) reacting a magnesium compound in nascent state...
7981991 Separation of polymer slurries  
Methods for producing elastomers or elastomeric compositions are provided. One or more C4 to C7 isoolefins and one or more comonomers can be polymerized in the presence of a diluent comprising one...
7964678 Catalyst for olefin polymerization and preparation thereof and polymerization process  
The catalyst for olefin polymerization contains three components A, B and C. The component A is a solid catalyst containing titanium, magnesium, chlorine element and an internal electron donor,...
7960484 Method for transitioning between ziegler-natta and metalocene catalysts in a bulk loop reactor for the production of polypropylene  
Polymerization processes in a bulk loop reactor are described herein. In particular, a method of contacting a flow of metallocene with a flow of propylene is provided. This method includes...
7947788 Process for the preparation of a catalyst component for the polymerization of an olefin  
The invention is directed to a process for the preparation of a catalyst component wherein a compound with formula Mg(OAlk)xCly wherein x is larger than 0 and smaller than 2, y equals 2−x and each...
7943717 Butene-1 copolymers and process for their preparation  
The present invention relates to butene-1 copolymers containing up to 40% by mol of ethylene and/or propylene derived characterized by the following properties: d) Product of the reactivity ratios...
7915358 Copolymer, production process thereof, lubricating oil viscosity modifier, and lubricating oil composition  
Copolymers when used as lubricating oil viscosity modifiers enable lubricating oils to show excellent low-temperature properties. Processes for producing the copolymers are disclosed. Lubricating...
7897710 Bimodal polyethylene film  
Film formed from a polyethylene resin composition which obeys a dynamic rheological relationship at 190° C. between melt storage modulus G′, measured in Pa and at a dynamic frequency where the...
7897706 Polymerization process using a supported, treated catalyst system  
The present invention relates to a supported, treated catalyst system and its use in a process for polymerizing olefin(s). More particularly, it provides a supported, treated catalyst system...
7893175 Ziegler-natta catalyst, preparation, and use for the polymerization of alkenes  
A method for making a solid catalytic component for a Ziegler-Natta catalyst includes contacting a particulate porous support with a solution of a hydrocarbon soluble organomagnesium precursor...
7893181 Bimodal film resin and products made therefrom  
A polymer, and a process of producing the polymer, that comprises at least one olefin and has a density of 0.955 g/cc to 0.959 g/cc and a secant modulus 140,000 psi to 220,000 psi. A film that...
7888438 Catalyst for olefin polymerization and process for olefin polymerization  
A catalyst for olefin polymerization of the present invention includes a solid titanium catalyst component (I) including titanium, magnesium, halogen, and a cyclic ester compound (a) represented...
7888437 Process for producing olefin polymer and solid titanium catalyst component  
The process for producing an olefin polymer according to the present invention is characterized in that it comprises polymerizing an olefin having 3 or more carbon atoms in the presence of a...
7884163 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...
7879751 Production process of olefin polymerization catalyst component, of olefin polymerization catalyst, and of olefin polymer  
A solid catalyst component for olefin polymerization, comprising titanium atoms, magnesium atoms, halogen atoms and hydrocarbyloxy groups, wherein the following filtrate contains titanium atoms in...
7879959 Catalyst components for the polymerization of olefins  
Catalyst components for the (co)polymerization of ethylene comprising Ti, Mg, halogen, ORI groups, where RI is a C1-C12 hydrocarbon group optionally containing heteroatoms, having ORI/Ti molar...
7867939 Catalyst for ethylene polymerization, preparation thereof, and method for controlling the polymerization kinetic behavior of said catalyst  
The present invention relates to a catalyst for polymerization of ethylene, a process for preparing the same, and a method for controlling kinetic behavior of said catalyst in ethylene...
7851578 Succinate-containing polymerization catalyst system using n-butylmethyldimethoxysilane for preparation of polypropylene film grade resins  
It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for succinate-containing Ziegler-Natta catalysts can provide a catalyst system that may prepare...
7820773 Olefin polymerisation catalyst  
The present invention relates to particulate olefin polymerization catalyst components comprising an alkaline earth metal, a compound of a transition metal and an electron donor, characterized in...

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