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7619049 |
Cyclic organosilicon compounds as electron donors for polyolefin catalysts
Cyclic organosilicon compounds that may be employed as an electron donor for polymerization catalyst systems, polymerization catalyst systems employing the cyclic organosilicon compounds as an...
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7619048 |
Method for producing propylene polymer using alkoxysilane compound containing trialkysilyl group in molecular structure
Disclosed is a method for producing a propylene polymer using an alkoxysilane compound comprising a trialkylsilyl group in its molecular structure, specifically a method for easily producing an...
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7605215 |
Process for producing olefin copolymerization catalyst and process for producing olefin copolymer
A process for producing an olefin copolymerization catalyst, comprising the step of contacting, with one another, (A) a solid catalyst component containing a titanium atom, a magnesium atom and a...
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7592286 |
Process for the preparation of a catalyst component and components therefrom obtained
A process for preparing a catalyst component, comprising a Mg compound a Ti compound and an electron donor compound (ED) selected from alcohol, glycols, esters, ketones, amines, amides, nitrites,...
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7566676 |
Preparation method of solid titanium catalyst for olefin polymerization
The present invention relates to a preparation method of solid titanium catalyst for olefin polymerization comprising the steps of: (1) preparing a magnesium compound solution by dissolving a...
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7511183 |
Tetramerization of olefins
The invention describes a process for tetramerisation of olefins wherein the product stream of the process contains more than 30% of the tetramer olefin. The process includes the step of contacting...
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7473664 |
Formation of Ziegler-Natta catalyst
Methods of forming polyolefins and catalysts are described herein. Such methods generally include forming Ziegler-Natta catalyst compounds in the absence of one or more blended compounds typically...
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7439313 |
Magnesium dichloride-ethanol adducts and catalyst components obtained therefrom
A MgCl 2 .mEtOH.nH 2 O adducts, where 3.4<m≦4.4, 0≦n≦0.7, characterized by an X-ray diffraction spectrum, taken under the condition set forth above, in which, in the range of 2θ...
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7417098 |
Method for emulsion polymerisation of olefins
Process for the emulsion polymerization of one or more olefins by reacting a quinoid compound with a metal compound and a phosphine compound which is substituted by at least one polar radical and...
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7414005 |
Preparation of catalyst compositions having improved activity
The present invention relates to a process for preparing a catalyst composition for olefin polymerization, which comprises preparing a catalyst solid in a first step by bringing A) at least one...
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7388061 |
Solid catalyst component for polymerization of olefins, catalyst comprising the same and use thereof
The present invention provides a solid catalyst component for the polymerization of olefins, comprising magnesium, titanium, a halogen and an electron donor, wherein said electron donor comprises...
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7388060 |
Catalyst component for olefin (co)polymerization, preparation thereof, a catalyst comprising the same and use thereof
The invention relates to a catalyst component for olefin (co)polymerization, to preparation thereof, to a catalyst comprising the same, and to use thereof in olefin (co)polymerization. The catalyst...
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7381780 |
Catalyst compositions comprising small silica support materials and methods of use in polymerization reactions
Improved catalyst compositions, and polymerization processes using such improved catalyst compositions, are provided. An example of an improved catalyst composition is a supported catalyst system...
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7378478 |
Catalyst precursor composition for electroless plating, and preparation method of transparent electromagnetic interference shielding material using the same
The present invention relates to a catalyst precursor composition for electroless plating, and more specifically, the present invention provides the catalyst precursor composition comprising (a) a...
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7351778 |
Catalyst component for olefin polymerization and catalyst comprising the same
The present invention provides a catalyst component for polymerization of olefin CH 2 ═CHR, in which R is hydrogen or C 1 -C 12 alkyl or aryl, comprising magnesium, titanium, a halogen and an...
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7351678 |
Catalyst systems for Ziegler-Natta propene polymerisation
The invention relates to the use of nitrogenous aluminium organyl complexes of general formula (I) as co-catalysts in heterogeneous polymerisation reactions of propene. In said formula: R, R′, R...
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7329626 |
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...
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7326757 |
Supported catalyst for olefin polymerization
Disclosed are catalyst systems and methods of making the catalyst systems for the polymerization of an olefin containing a solid titanium catalyst component containing an inorganic titanium...
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7323526 |
Supported metallocene-alkyl catalyst composition
A supported catalyst composition having improved flow properties is disclosed comprising an alkylalumoxane, a metallocene-alkyl an inorganic oxide support having an average particle size of from...
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7323431 |
Catalyst for olefin polymerization and use of the same
The present application discloses a catalyst for olefin polymerization, comprising a product of the following components: (A) solid titanium-containing catalyst component comprising magnesium,...
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7307035 |
Magnesium dichloride-alcohol adducts and catalyst components obtained therefrom
The present invention relates to an adduct comprising M g Cl 2 , an alcohol (ROH) in which R is a C1-C10 hydrocarbon group, and a compound containing a transition metal M selected from the Groups 3...
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7285513 |
Preparation of catalyst systems
The present invention relates to a process for preparing a catalyst for olefin polymerization which is obtainable by bringing
A) at least one organic transition metal compound, B) a mixture of at...
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7256150 |
Preparation of olefin polymerization catalyst component
A process for producing a Gp 2/transition metal olefin polymerisation catalyst component, in which a Gp 2 complex is reacted with a transition metal compound so as to produce an oil-in-oil...
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7247596 |
Stabilized organoborane polymerization initiators and polymerizable compositions
The invention is polymerizable compositions comprising in one part an organoboron compound capable of forming a free radical generating species and a stabilizing amount of one or more compounds...
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7232785 |
Solid catalytic component and catalytic system of the ziegler-natta type, process for their preparation and their use in the polymerization of alk-1-enes
The present invention relates to a new solid catalytic component, which can be used in combination with an aluminum compound as co-catalyst and optionally an external electron donor as additional...
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7220805 |
Process for producing contact product; catalyst component for addition polymerization; process for producing catalyst for addition polymerization; and process for producing addition polymer
There are provided (1) a process for producing a contact product, which comprises the step of contacting at least a phthalocyanine complex, a porphyrin complex, or their combination with a...
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7220694 |
Magnesium compound, olefin polymerization catalyst, and method for producing olefin polymer
The invention relates to a magnesium compound effective in producing olefin polymers having an increased bulk density and a narrowed particle size distribution, not lowering the stereospecificity...
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7211535 |
Enhanced polyolefin catalyst
The present invention provides a novel process for preparing a catalyst useful in gas phase polymerization of olefins wherein the physical properties of the polymer and the productivity of the...
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7208559 |
Ethylened polymer and molded object obtained therefrom
An ethylene-based polymer which is an ethylene/C4 to C10 α-olefin copolymer and satisfies the following requirements [k1] to [k3]: [k1] melt flow rate (MFR) under a loading of 2.16 kg at 190° C....
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7208435 |
Solid catalyst component for olefin polymerization and catalyst
A solid catalyst component for polymerization of olefins prepared by contacting (a) a dialkoxy magnesium compound, (b) a tetra-valent titanium halide, and (c) an electron donor compound of the...
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7202314 |
Components and catalysts for the polymerization of olefins
The present invention relates to a solid catalyst component for the polymerization of olefins CH 2 ═CHR in which R is hydrogen or a hydrocarbon radical with 1–12 carbon atoms, comprising Mg,...
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7202191 |
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 Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films...
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7172988 |
Catalyst component for ethylene polymerization, a process for preparing thereof and catalyst comprising the same
A catalyst component for ethylene polymerization, including an inorganic oxide support, and at least one alkyl metal compound, at least one halide, at least one dihydrocarbyl magnesium compound, at...
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7169727 |
Process for forming a ziegler-natta catalyst system having a controlled morphology
A pre-catalyst is formed by reacting butylethylmagnesium with an alcohol to form a magnesium alkoxide compound, followed by contacting the magnesium alkoxide compound with a phosphorous compound to...
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7166682 |
Process to prepare a particulated metallocene catalyst with a modified aluminoxane and use in polymerization of olefins
A process for the preparation of an olefin polymerisation catalyst comprising: a) reacting an aluminoxane and a Lewis base in an optionally halogenated hydrocarbon solvent to form a particulate...
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7160833 |
Spray-dried polymerization catalyst and polymerization process employing same
A spray-dried composition comprising the reaction product of a magnesium halide, a solvent, an electron donor compound, and a transition metal compound and an inert filler comprising substantially...
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7148302 |
Catalyst for polymerization of norbornene
This invention is based upon the discovery that a catalyst system which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol is effective for polymerizing...
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7141635 |
Catalyst composition and polymerization process using mixtures of selectivity control agents
A catalyst composition for the polymerization of olefins and process for the use thereof, comprising the combination of one or more Ziegler-Natta catalysts, comprising one or more transition metal...
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7135531 |
Spherical catalyst for olefin polymerization
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...
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7129303 |
Method for producing homo- and co-polymers of ethylene
The present invention provides a method for producing homo- and co-polymers of ethylene, or more particularly a method for producing homo- and copolymers of ethylene in the presence of (a) a solid...
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7112642 |
Highly stereoregular polypropylene with improved properties
Propylene polymers having a content of isotactic pentads (mmmm) higher than 97%, molecular weight distribution, expressed by the formula (a) ratio, equal to or higher than 6 and a value of formula...
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7109143 |
Polymerization catalyst system using n-butymethyldimethoxysilane for preparation of polypropylene film grade resins
It has been discovered that using n-butylmethyldimethoxysilane (BMDS) as an external electron donor for Ziegler-Natta catalysts can provide a catalyst system that may prepare polypropylene films...
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7098285 |
Catalyst obtained by prepolymerization of polyolefin and olefin polymerization method using the same
The present invention provides a prepolymerized olefin polymerization catalyst and olefin polymerization method using the same. More particularly, the present invention provides a prepolymerized...
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7087688 |
Magnesium dichloride-ethanol adduct and catalyst components obtained therefrom
A MgCl 2 ·mEtOH·nH 2 O adducts, where 3.4<m≦4.4, 0≦n≦0.7, characterized by an X-ray diffraction spectrum, taken under the condition set forth above, in which, in the range of 2θ...
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7084221 |
Polymerization catalyst system containing polyether-modified aluminoxane
A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst...
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7071138 |
Solid catalyst component for olefin polymerization, catalyst for olefin polymerization and process for producing olefin polymer
A solid catalyst component for olefin polymerization in which the molar ratio of residual alkoxy groups to supported titanium is 0.60 or less is obtained by reacting the following compound (a1)...
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7060763 |
Magnesium dichloride-ethanol adducts and catalyst components obtained therefrom
The present invention relates to a MgCl 2 .mEtOH adduct in which m is from 2.5 to 3.2 optionally containing water up to a maximum of 1% wt based on the total weight of the adduct, characterized by...
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7049263 |
Process for producing catalyst for α-olefin polymerization and process for producing α-olefin polymer
There are provided a process for producing a catalyst for α-olefin polymerization, which comprises the step of contacting (1) a solid catalyst component having Ti, Mg and a halogen as essential...
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7045481 |
Nanocatalyst anchored onto acid functionalized solid support and methods of making and using same
Supported catalysts include a solid support such as silica that is functionalized to have inorganic acid functional groups attached thereto. Active catalyst particles are supported on the...
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7045479 |
Intermediate precursor compositions used to make supported catalysts having a controlled coordination structure and methods for preparing such compositions
Intermediate precursor compositions for use in manufacturing supported reactive catalysts having a controlled coordination structure, and methods for manufacturing such precursor compositions are...
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