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7381779 |
Self limiting catalyst composition with dicarboxylic acid ester internal donor and propylene polymerization process
A catalyst composition for the polymerization of propylene comprising one or more Ziegler-Natta procatalyst compositions comprising one or more transition metal compounds and one or more esters of...
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7348381 |
High modulus, high ductility polyolefins
Provided herein are propylene polymers which are capable of being used as thermoplastic polyolefins just as they emerge from the reactor system described, without further compounding of components...
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7253132 |
Magnesium-containing carrier components and application thereof to olefin polymerization
Solid fine particles which contain a magnesium atom, an aluminum atom and a C 1-20 alkoxy group simultaneously, are insoluble in a hydrocarbon solvent, and have an average particle diameter of 3...
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7220696 |
Solid titanium catalyst component for olefin polymerization, catalyst for olefin polymerization, and process for olefin polymerization
Disclosed is a catalyst for olefin polymerization comprising [I] a solid titanium catalyst component [S] comprising titanium, magnesium, halogen and an electron donor (b), which is obtained by...
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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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7166553 |
Mixed catalyst compositions for the production of polyolefins
A solid, hydrocarbon insoluble catalyst composition comprising: A) a solid, particulated complex comprising moieties of at least magnesium, a Group 4 transition metal, and a halide; B) one or more...
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7153803 |
High activity and good hydrogen response Ziegler-Natta polyethylene catalyst
Disclosed are catalyst systems and methods of making the catalyst systems/supports for the polymerization of polyethylene containing a solid titanium catalyst component containing a titanium...
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7141634 |
Catalyst for olefin polymerization and process for polymerizing olefins
A catalyst for olefin polymerization comprising (A) a solid catalyst component which is prepared by causing (a) a magnesium compound, (b) a tetravalent titanium halide compound, and (c) an electron...
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7138469 |
Process for the polymerization of olefins
Process for the polymerization of olefins CH 2 ═CHR, in which R is hydrogen or a hydrocarbon radical with 1–12 carbon atoms, carried out in the presence of a catalyst component (A) comprising...
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7129302 |
Bimetallic catalyst for producing polyethylene resins with bimodal molecular weight distribution, its preparation and use
Bimetallic catalyst for producing polyethylene resins with a bimodal molecular weight distribution, its preparation and use. The catalyst is obtainable by a process which includes contacting a...
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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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7098164 |
Process for the polymerization of olefins
A process for the (co) polymerization of olefins of formula CH 2 ═CHR wherein R is a hydrogen atom, a methyl or an ethyl radical, carried out in the presence of a system comprising (a) solid...
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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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7060764 |
Method for polymerization and copolymerization of ethylene
A method for polymerization and copolymerization of ethylene is disclosed. The polymerization is carried out in the presence of a preactivated titanium solid complex catalyst supported on a carrier...
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7015170 |
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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7008898 |
Method for producing a poly-1-olefin in the presence of a ziegler catalyst
The invention relates to a method for producing a poly-1-olefin by polymerisation of a 1-olefin of the formula R 4 CH═CH 2 , in which R 4 is hydrogen or an alkyl radical having from 1 to 10...
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6992034 |
Catalyst component for olefin polymerization
A solid catalyst component useful for the (co)-polymerization of olefins is disclosed. The catalyst component is prepared by reacting an activated magnesium halide composite support with a...
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6864208 |
Method for production of a solid catalyst for olefin polymerization
A catalyst solid for olefin polymerization comprising
A) at least one magnesium halide, B) at least one metallocene complex and C) at least one compound capable of forming metallocenium...
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6825294 |
Catalysts for polymerizing styrene and other monomer and process for producing styrene polymer
Provided are catalysts for styrene polymerization capable of efficiently and inexpensively producing styrenic polymers having a syndiotactic structure; and a method for producing styrenic polymers....
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6806222 |
Solid titanium catalyst component, ethylene polymerization catalyst containing the same, and ethylene polymerization process
Disclosed is a solid titanium catalyst component which is obtained by a process comprising the steps of bringing (a) a liquid magnesium compound into contact with (b) a liquid titanium compound in...
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6800703 |
Method for preparing propylene polymers having broad molecular weight distribution
A method for producing propylene polymers having a broad molecular weight distribution (MWD) is disclosed. The method uses a Ziegler catalyst and one silane donor. The silane donor is selected from...
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6784133 |
Method for preparing catalyst for olefin polymerization
Disclosed is a preparation method of titanium catalyst for olefin polymerization, the method comprising (1) preparing magnesium compound solution by resolving non-deoxidative magnesium halide and...
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6747103 |
High-stiffness propylene polymers and a process for the preparation thereof
The present invention concerns high-stiffness polymer composition and a process for producing a polymer composition by nucleated with a polymeric nucleating agent containing vinyl compound units....
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6699814 |
Catalysts for the polymerization of olefins
The present invention relates to catalysts particularly suitable for the sterospecific polymermerization of olefins, comprising Ti, Mg, halogen and an electron donor compound selected from...
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6689850 |
Process for the polymerization of olefins
The present invention relates to a process for the polymerization of olefins using catalyst components and catalysts obtained therefrom comprising Ti, Mg, halogen and an electron donor compound...
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6630559 |
Propylene polymer, propylene block copolymer, process for preparing said polymer and said block copolymer, and propylene polymer composition
Disclosed are a propylene polymer having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain (continuous...
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6569964 |
Alumoxane-enhanced, supported Ziegler-Natta catalysts, methods of making same, processes of using same and polymers produced therefrom
The invention relates to an improved olefin catalyst, a method of in situ-activated catalyst preparation and a process for the polymerization of olefinic monomers via, for example, a titanium...
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6559253 |
High temperature olefin polymerization process
The invention is directed to olefin polymerization processes using bridged hafnocene catalyst complexes comprising highly substituted noncoordinating anions that are surprisingly stable under high...
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6559250 |
Method of homo- or co-polymerization of α-olefin
The present invention relates to a method of homo- or co-polymerization of α-olefin by means of using a catalyst system which comprises the following components: (1) a solid complex titanium...
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6545099 |
Propylene polymer and block copolymer
Disclosed are a propylene polymer having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain (continuous...
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6515085 |
Components and catalysts for the polymerization of olefins
Catalyst-forming components and catalysts for the polymerization of olefins based on said components are disclosed. The catalysts comprise the reaction product of: (a) an Al alkyl compound; (b) a...
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6486274 |
Hydrogen response Ziegler-Natta catalyst for narrowing MWD of polyolefin, method of making, method of using, and polyolefins made therewith
A Ziegler-Natta type catalyst having an improved hydrogen response provides for narrowing of the MWD of resulting polyolefins polymerized using such catalyst, with such catalyst generally made by...
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6476165 |
Olefin polymerization process using fatty amine additives and boron-modified supported catalyst
An olefin polymerization process is described. The process comprises polymerizing an olefin in the presence of a support, a single-site catalyst, an optional activator, and a fatty amine. The...
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6455648 |
Olefin production
A process is provided which comprises preparing an olefin oligomerization or trimerization catalyst system and producing olefins in the presence of the olefin oligomerization or trimerization...
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6395667 |
Solid catalyst component for α-olefin polymerization and process for producing α-olefin polymer
The present invention relates to a solid catalyst component for α-olefin polymerization having a narrow particle size distribution of not less than 6.0 in terms of the value of N in a...
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6391987 |
Gas-phase polymerization process for producing propylene/1-pentene copolymers
Process for producing a propylene/1-pentene polymer in the presence of a Ziegler-Natta catalyst system with the monomer reactants being in the vapor phase while the reaction is in process and with...
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6384160 |
Polyolefin catalyst for polymerization of propylene and a method of making and using thereof
A method of polymerizing olefins with a catalyst component which comprises 1) the reaction product of a magnesium alkoxide of the formula M(OR) 2 , wherein M is magnesium, O is oxygen, R is a...
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6384159 |
Production of polyethylene with a titanium amide catalyst
The present invention relates to a process to produce polyethylene through homopolymerization or copolymerization of ethylene with alpha-olefins in the presence of a titanium amide catalyst...
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6337377 |
Process for producing olefin polymers, olefin-polymerizing catalyst and polyproylene for biaxially oriented film produced with said catalyst
A process for producing an olefin polymer using a catalyst in which (A) is a solid catalyst component which includes magnesium, titanium, halogen and an electron donative compound as essential...
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6320003 |
Method for producing a polyolefin
A method for producing a polyolefin in the presence of a catalyst comprising a transition metal compound and an organometallic compound, wherein a catalyst system is used which comprises (A) a...
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6306996 |
Polybutene-1 (co)polymers and process for their preparation
The present invention relates to polybutene-1 homopolymers, or copolymers containing up to 20% by weight of alpha olefins having from 2 to 10 carbon atoms other than butene-1, characterized by the...
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6235854 |
Solid titanium catalyst component and its use in olefin polymerization catalyst
The invention provides a process for preparing a solid titanium catalyst component for use in the preparation of an olefin polymerization catalyst, which comprises: (1) a step wherein a...
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6228956 |
Process for the gas-phase polymerization of olefins
Process for the gas-phase polymerization of olefins of the formula CH 2 CHR where R is hydrogen or an alkyl or aryl radical with 1 to 8 carbon atoms carried out in one or more reactors having a...
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6201076 |
Olefin polymerization process with fatty amine additives for improved activity and reduced fouling
An olefin polymerization process is described. The process comprises polymerizing an olefin in the presence of a supported single-site catalyst, an optional activator, and a fatty amine. The fatty...
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6200923 |
Polymerization catalyst composition containing magnesium, titanium, halogen, and carboxylic acid ester
A novel soluble composition containing magnesium, titanium, a halogen and a carboxylic acid ester has been invented. The composition has mainly the composition according to Formula (I): (MgX 3 2...
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6174971 |
Ziegler-natta catalysts for olefin polymerization
A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation which includes treating a soluble magnesium compound with successively stronger chlorinating-titanating reagents. The...
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6124412 |
Alumoxane-enhanced, supported ziegler-natta polymerization catalysts, methods of making same, processes of using same and polymers produced therefrom
The present invention relates to a new olefin polymerization catalyst composition, and methods of preparing and methods of using the catalysts to polymerize various olefinic monomers in either gas...
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6096844 |
Catalst for olefin polymerization and process for producing polyolefin using the same
A catalyst for olefin polymerization comprising: (A) a solid catalyst component comprising a titanium compound, a magnesium compound, and a halogen compound; (B) an organoaluminum compound; (C) a...
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6084042 |
Mixed titanium-vanadium catalysts for solution ethylene polymerization
The present invention provides a Ziegler-Natta catalyst based on titanium and vanadium useful in solution processes for the polymerization of olefins having a low amount of aluminum and magnesium....
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6066702 |
Method for polymerization of an α-olefin
A method for polymerization or copolymerization of α-olefin, characterized in that the polymerization is performed using a solid complex titanium catalyst comprising magnesium, a...
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