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7417097 Organometal compound catalyst  
This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for...
7414099 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...
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...
7410927 Catalysts for olefin polymerization  
This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a...
7402638 Propylene polymer particle method of producing the same and use thereof  
The present invention relates to a propylene random copolymer which satisfies the following requirements [1] to [4], and to various useful molded products obtained by molding the propylene random...
7385015 Trialkylaluminum treated supports  
This invention relates to a process to prepare a trialkylaluminum treated support comprising: 1) combining a support with first trialkylaluminum compound(s), where the alkyl groups have at least 2...
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...
7368411 Supported metallocene catalysts and their use in producing stereospecific polymers  
Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers which contain three or more carbon atoms or...
7354981 Polyethylene catalyst and a process for preparing the same  
The present invention discloses a polyethylene catalyst and a process for preparing the same, said catalyst being composed of a main component of catalyst and a cocatalyst, wherein the main...
7345119 Olefin polymerization catalyst and olefin polymerization method using the same  
An olefin polymerization solid catalyst including a reaction product of a transition metal compound and an organoaluminum compound carried on a support having silica treated with an...
7342078 Transition metal compound, ligand system, catalyst system and the use of the latter for polymerisation and copolymerisation of olefins  
A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems...
7326759 Compositions for solid freeform fabrication  
Chemical compositions are disclosed. One exemplary composition, among others, includes: a basic component, an acidic component, at least one acrylate component, oxidizing agent, reducing agent, and...
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...
7319125 Supercritical polymerization process and polymers produced therefrom  
This invention relates to a process to produce propylene polymers comprising contacting a metallocene catalyst compound and an activator in a reaction medium comprising propylene, from 0 to 30...
7312283 Polymerization catalysts and process for producing bimodal polymers in a single reactor  
Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. Methods for preparing and using such...
7300988 Single catalyst low, medium and high density polyethylenes  
A method of polymerizing olefins comprising combining in one embodiment ethylene and optionally one or more α-olefins with a catalyst composition in a continuous polymerization reactor at a...
7294680 Method of producing conjugated diene polymers with narrow molecular weight distribution and polymer produced  
Conjugated diene polymers having good wear resistance, mechanical properties, storage stability, processability and a reduced cold flow are produced by polymerizing a conjugated diene compound with...
7294679 Catalyst support method and polymerization with supported catalysts  
This invention relates to a method to support one or more catalyst compounds comprising contacting the catalyst compounds with a pretreatment agent comprising an aluminum alkyl and or an alumoxane...
7294600 Supported hybrid metallocene catalyst, method for preparing the same, and method for preparing polyolefin using the same  
The present invention relates to a supported metallocene catalyst used for preparing polyolefin whose physical properties and molecular weight distribution can be easily controlled, a method for...
7294599 Acidic activator-supports and catalysts for olefin polymerization  
This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst...
7268195 Mesoporous catalyst support, a catalyst system, and method of making and using same for olefin polymerization  
This invention relates to a catalyst system comprising a catalyst and a support comprising a non-layered inorganic porous crystalline phase material, wherein the support comprises a hexagonal...
7262259 Method of preparing a treated support  
This invention relates to a method to polymerize olefins comprising contacting a solid aluminum or solid titanium compound with a supported catalyst compound, heating the solid aluminum or solid...
7259215 Process for producing propylene/ethylene block copolymer and propylene/ethylene block copolymer  
A process for producing a propylene-ethylene block copolymer in a good morphology using a catalyst system comprising a metallocene catalyst (1) preparing high crystalline polypropylene, a...
7259125 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...
7256243 Silicon compound  
The present invention provides a novel silicon compound represented by Formula (1) having a living radical polymerization initiating ability for addition-polymerizable monomers and a polymer...
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...
7247686 Solid cocatalyst component for olefin polymerization and catalyst system thereof  
A solid cocatalyst for olefin polymerization in which an ion-containing compound comprising a cation expressed by [R 4 M]+, wherein the group R are each individually selected from the group...
7247594 Catalysts for olefin polymerization  
This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a...
7238756 Polymerization process and control of polymer composition properties  
Methods of controlling the flow index and/or molecular weight split of a polymer composition are disclosed. The method of producing a polymer composition in one embodiment comprises incorporating a...
7232869 Catalyst composition for olefin polymerization  
A process for the preparation of a catalyst system includes the steps of combining a Lewis base, an organic compound having at least one functional group containing active hydrogen, and an...
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...
7223823 Catalyst system and process  
This invention relates to a process of polymerizing ethylene in a reactor comprising contacting a catalyst system comprising a supported chromium catalyst and an aluminum alkyl cocatalyst, where...
7220804 Method for preparing a catalyst system and its use in a polymerization process  
The present invention relates to a supported catalyst composition and a method for making the supported catalyst composition and its use in a process for polymerizing olefin(s). In particular, the...
7220695 Supported activator  
This invention relates to supported activators comprising the product of the combination of an ion-exchange layered silicate, an organoaluminum compound, and a heterocyclic compound, which may be...
7211536 Supported metallocene catalysts and their use in producing stereospecific polymers  
Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers which contain three or more carbon atoms or...
7205363 Polymerization processes using antistatic agents  
The invention relates to a process for the polymerization of olefins using an antistatic agent. In particular, the invention relates to a polymerization process to produce propylene polymers using...
RE39561 Metallocenes containing ligands of 2-substituted indenyl derivatives, process for their preparation, and their use as catalysts  
The novel metallocenes of the formula I in which, preferably, M 1 is Zr or Hf, R 1 and R 2 are alkyl or halogen, R 3 and R 4 are hydrogen, R 5 and R 6 are alkyl or haloalkyl, —(CR 8 R...
7202190 Supported catalyst system for the polymerization of olefins  
A supported catalyst system for polymerizing olefins comprising a) a support, b) a Lewis base of the formula M 3 R 6 R 7 R 8 ...
7199073 Resins that yield low haze films and the process for their production  
Catalyst compositions comprising a first metallocene compound, a second metallocene compound, a third metallocene compound, a chemically-treated solid oxide, and an organoaluminum compound are...
RE39532 Metallocenes containing ligands of 2-substituted indenyl derivatives, process for their preparation, and their use as catalysts  
The novel metallocenes of the formula I in which, preferably, M 1 is Zr or Hf, R 1 and R 2 are alkyl or halogen, R 3 and R 4 are hydrogen, R 5 and R 6 are alkyl or haloalkyl, —(CR 8 R...
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...
7169864 Metallocene catalysts, their synthesis and their use for the polymerization of olefins  
A process for the preparation of a catalyst system includes the steps of combining a support material with a first composition which includes at least one aluminoxane in a first solvent to provide...
7163993 Electrical devices from polymer resins prepared with ionic catalysts  
This invention relates to olefin polymers particularly suited to satisfying the dielectric properties required in electrical device use. The olefin polymers can be prepared by contacting...
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...
7148298 Polymerization catalysts for producing polymers with low levels of long chain branching  
This invention relates to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene with bridging η 5 -cyclopentadienyl-type ligands, in combination with a cocatalyst and an...
7141633 Olefin trimerization using a catalyst comprising a source of chromium, molybdenum or tungsten and a ligand containing at least one phosphorous, arsenic or antimony atom bound to at least one (hetero) hydrocarbyl group  
A process for the trimerization of olefins is disclosed, comprising contacting a monomeric olefin or mixture of olefins under trimerization conditions with a catalyst which comprises (a) a source...
7125937 Polyorganosilsesquioxane supported metallocene catalysts  
Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers such as the polymerization of propylene to...
7074865 Azaborolyl group 4 metal complexes, catalysts and olefin polymerization process  
Metal complexes, catalysts derived therefrom, and polymerization processes using the same, characterized by the presence of one or more nitrogen and boron containing, anionic 5-membered cyclic...
7071137 Method of making a ziegler-natta catalyst  
A method for making a Ziegler-Natta catalyst support includes the steps of contacting a fumed silica with a surface modifying agent such as a compound having the formula RMgX MgR′R″ wherein R,...
7067598 Process for the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor  
The present invention relates to a process for the gas-phase (co-)polymerization of olefins in a fluidized bed reactor using a chromium oxide catalyst characterized in that the polymerization is...
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