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7618912 |
Preparation of supported catalyst systems
The present invention relates to a process for preparing a catalyst solid for olefin polymerization which is obtainable by bringing
A) at least one organic transition metal compound, B) at least...
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7608555 |
Method for the preparation of olefin polymerization catalysts
The present invention relates to a process for the production of catalysts, particularly of Ziegler-Natta type of catalysts for olefin polymerisation, to the catalysts as such, and to their use in...
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7601665 |
Compositions that can produce polymers
This invention provides a compositions that are useful for polymerizing at least one monomer into at least one polymer.
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7601664 |
Olefin polymerization catalyst compositions and method of preparation
A method of making a solid procatalyst composition for use in a Ziegler-Natta olefin polymerization catalyst composition, said method comprising:
contacting a precursor composition...
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7598200 |
Ionic liquids for heterogenising metallocene catalysts
The present invention discloses a method for preparing an heterogeniseded catalyst component comprising the steps of: a) providing a halogenated precursor component of formula (I) —X—[—CH 2...
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7592285 |
Method for preparing an olefin polymerization catalyst composition
The present invention provides for a method for preparing a storable fluidic olefin polymerisation catalyst composition, said catalyst comprising an organometallic compound of a transition metal of...
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7579417 |
Metallocene compounds
A metallocene compound of formula (I) wherein: M is an atom of a transition metal; X, same or different, is a hydrogen atom, a halogen atom, or a R, OR, OSO 2 CF 3 , OCOR, SR, NR 2 or PR 2 group,...
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7566680 |
High surface area iron material prepared from a low surface area iron metal precursor
A method for producing a high surface area iron material starting with a low surface area iron metal is disclosed. The iron material of the present invention has a surface area of at least about...
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7560412 |
Fluid/slurry bed cobalt-alumina catalyst made by compounding and spray drying
A method for producing a cobalt on alumina catalyst is disclosed. The catalyst is prepared by thoroughly mixing cobalt nitrate into a peptized alumina slurry, and then spray-drying the slurry to...
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7557057 |
Method for preparation of highly dispersed supported platinum catalyst
The present invention relates to a method for synthesizing highly dispersed supported platinum catalyst. More particularly, the present invention relates to a method of synthesizing highly...
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7553917 |
Technique for selecting polymerization modifiers cross reference statement
A combinatorial method for identifying a catalyst composition for use in the homogeneous addition polymerization of an olefin monomers, said catalyst composition comprising a transition metal...
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7538060 |
Palladium-copper chromite hydrogenation catalysts
Disclosed are catalysts comprising copper chromite, palladium and lanthanum having hydrogenation activity. The combination of copper chromite with palladium and lanthanum enhances catalyst activity...
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7534842 |
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...
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7531478 |
Production of supported olefin polymerisation catalysts
The invention provides a process for producing an olefin polymerisation catalyst, comprising suspending a porous particulate support material in a liquid/liquid two phase system, which comprises a...
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7524906 |
Process for the preparation of a metal-organic compound comprising at least one imine ligand
The invention relates to a process for the preparation of a metal-organic compound, comprising at least one imine ligand, characterized in that an imine ligand according to formula 1, or the HA...
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7518023 |
Highly active spherical metal support catalysts
The invention relates to highly active spherical metal support catalysts with a metal content of 10 to 70% by mass, and a process for their production with the use of a mixture of polysaccharides...
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7514387 |
Reformer and method of making the same
A reformer comprises a housing; a substrate disposed in the housing, wherein the substrate comprises a stabilized aluminate and a stabilized zirconate; and a catalyst disposed on the substrate.
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7498289 |
Ni catalysts and methods for alkane dehydrogenation
Catalysts and methods for alkane oxydehydrogenation are disclosed. The catalysts of the invention generally comprise (i) nickel or a nickel-containing compound and (ii) at least one or more of...
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7485765 |
Process for obtaining a butadiene homopolymer in the presence of monoolefin(s) with 4 carbon atoms
A process is described for obtaining a 1,3-butadiene homopolymer by the reaction of a catalytic system in the presence of 1,3-butadiene and one or more monoolefin(s) with 4 carbon atoms. This...
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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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7470758 |
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...
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7468416 |
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...
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7468339 |
Diketonate complex-derived catalysts useful for preparing polyolefins
An olefin polymerization catalyst may be prepared using a process including contacting a metal compound of the formula M(OR 1 ) 2 with a diketone to form a catalyst precursor having the general...
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7465775 |
Process for the production of polypropylene using high yield Ziegler-Natta catalysts
This invention relates to a process for the production of a polymer film or fibre wherein a polymer composition comprising a propylene homo- or copolymer is formed into a film or fibre, and wherein...
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7465691 |
Composition for cleaning up natural water and sewage water and method for producing said composition (variants)
The invention relates to a process of preparing a composition for natural and waste waters purification, by heating and stirring and acid titanium-containing solution with metal compounds selected...
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7456126 |
Ziegler-natta catalyst for olefin polymerization including aryloxy group and method for polymerization of olefin using same
The present invention relates to a Ziegler-Natta catalyst for olefin polymerization and a method for polymerization of olefin using the same. Specifically, the invention relates to a Zeigler-Natta...
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7449423 |
Heat treatment of anchored nanocatalysts in a non-zero oxidation state and catalysts made by such method
A catalyst manufacturing process includes heat treating an intermediate catalyst composition that includes catalyst nanoparticles having catalyst atoms in a non-zero oxidation state bonded to a...
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7446072 |
Preparation of supported catalyst systems containing reduced amounts of aluminoxanes
The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises
...
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7442667 |
Preparation of supported cocatalysts
The present invention relates to a process for preparing a supported cocatalyst for olefin polymerization, which comprises reacting A) a support bearing functional groups, B) triethylaluminum and...
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7435840 |
Method for producing orthometalated and orthosubstituted metallocenes
The invention relates to compounds having a structural element of formula (I) in an aromatic hydrocarbon ring, wherein: M represents —Li, —MgX 3 , (C 1 -C 18 -Alkyl) 3 Sn—, —ZnX 3 or...
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7432220 |
Method for the preparation of olefin polymerization catalyst support and an olefin polymerization catalyst
The invention is directed to a process for producing a particulate support for an olefin polymerisation catalyst wherein a solution of a magnesium compound is contacted with a solution of an...
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7427653 |
Catalyst components for the polymerization of olefins
A catalyst component for olefin (co)polymerization, and in particular for the preparation of LLDPE, comprising Mg, Ti, halogen and an electron donor compound (ED) belonging to ethers, esters,...
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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...
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7416579 |
Preparing nanosize platinum-titanium alloys
Nanometer sized particles containing titanium and platinum are prepared by a sonochemical process. Compounds of the metals are dissolved, suspended, or diluted in a low vapor pressure liquid...
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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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7410925 |
Metal compound, and catalyst component and catalyst for addition polymerization, and process for producing addition polymer
A metal compound obtained by a process comprising the step of contacting, in a specific ratio, a compound represented by the formula BiL 1 r , a compound represented by the formula R 1 s-1 TH, and...
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7390770 |
Catalyst for purifying an exhaust gas and a preparation process of the catalyst
A catalyst for purifying an exhaust gas containing carbon monoxide and volatile organic compounds, which has a coat layer of a carrier composed of a porous inorganic compound, wherein the coat...
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7390764 |
Organometal catalyst compositions
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...
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7387980 |
Methods of using heterocycle-amine ligands, compositions, complexes, and catalysts
Ligands, compositions, and metal-ligand complexes that incorporate heterocycle-amine compounds are disclosed that are useful in the catalysis of transformations such as the polymerization of...
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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...
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7384886 |
Methods of preparation of an olefin oligomerization catalyst
A method of making a catalyst for use in oligomerizing an olefin comprising a chromium-containing compound, a pyrrole-containing compound, a metal alkyl, a halide-containing compound, and...
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7381778 |
Method of preparing a treated support
This invention relates to a method of preparing a supported catalyst comprising the steps of contacting a solid titanium with a supported catalyst compound, and heating the combination to at least...
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7381240 |
Platinum particles with varying morphology
Nanometer to micrometer sized particles containing platinum and having selected morphologies are prepared by a sonochemical process. A compound of platinum is dissolved, suspended, or diluted in a...
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7361714 |
Catalyst and method for hydrogenating aromatic compounds
The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or esters of these, via ring hydrogenation of the corresponding...
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7335410 |
Composition and process for manufacturing polyester
The invention relates to a composition suitable for catalysis in a process for the manufacture of polyester containing as Component I a carrier substance on which catalytically effective metal...
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7332455 |
Catalyst component and catalyst for olefin polymerization as well as use thereof
The present invention relates to a catalyst component and a catalyst for olefin polymerization. The catalyst component utilizes magnesium halide and silica as composite support, and the particle...
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7300902 |
Catalyst for polymerization of ethylene, preparation thereof and use of the same
The present invention provides an ethylene polymerization catalyst. The present invention also provides a process for preparing the ethylene polymerization catalyst, comprising reacting powdered...
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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...
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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...
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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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