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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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7598198 |
Rhodium containing catalysts
The present invention addresses at least four different aspects relating to catalyst structure, methods of making those catalysts and methods of using those catalysts for making alkenyl alkanoates....
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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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7569508 |
Reforming nanocatalysts and method of making and using such catalysts
Reforming nanocatalysts are formed using a dispersing agent to increase the activity, selectivity and longevity of the catalyst when used in a reforming process. The nanocatalyst particles are...
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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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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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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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7288611 |
Methods for preparing a rare-earth cis-1,4-polybutadiene rubber with a controlled molecular weight distribution
Disclosed herein are a method for preparing a cis-1,4-polybutadiene with a controlled molecular weight distribution, comprising polymerizing butadiene monomers using a rare-earth catalyst system...
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7271122 |
Multimodal polyethylene obtained with multilayer chromium catalyst
The present invention concerns a catalyst for the production of high density polyethylene, by homopolymerising ethylene or copolymerising ethylene and an alpha-olefinic comonomer comprising 3 to 10...
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7271120 |
Catalyst for the synthesis of dimethyl carbonate from urea and methanol, preparation and use thereof
A catalyst for the preparation of dimethyl carbonate from urea and methanol having a composition on weight base of: active component of from 20 to 50 wt %, and carrier of from 80 to 50 wt %, and...
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7271119 |
Process for preparing an olefin polymerization catalyst component
Process for preparing an olefin polymerisation catalyst component in the form of particles having a predetermined size range, said process comprising the steps of a) preparing a solution of a...
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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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7230060 |
Removable coating compositions
A coating composition is described comprising a multi-stage emulsion polymer that is both radiation curable, removable and includes chemically reactive functional groups in the coating that react...
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7141636 |
Method for producing a polymer
The present invention relates to a process for preparing a catalyst, a novel polymer and a process for preparing the polymer. In particular, the invention provides a process for preparing a...
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7049262 |
Cryogenic method for forming a supported catalyst
The present invention provides a method of preparing a supported catalyst from a liquid catalyst system dispersed on a solid carrier. The method of this embodiment comprises freezing the liquid...
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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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6992033 |
Process for preparation of catalyst composition for ethylene polymerization
Process for preparing a catalyst composition for ethylene polymerization or copolymerization, with the steps of: (a) treating at least one magnesium alkoxide compound with the effluent waste from a...
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6972271 |
Supported catalyst systems
Disclosed are methods of producing supported organic catalyst systems which find particular use in polymerization reactions. The methods comprise generally, the steps of (a) providing an organic...
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6943134 |
Bimodal polyolefin production process and films therefrom
A process of producing a bimodal polyolefin composition is described, which includes in one embodiment contacting monomers with a supported bimetallic catalyst composition for a time sufficient to...
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6855795 |
Catalyst removal process
The present invention provides a process for producing polycarbonates in the presence of one or more alkali metal or alkaline-earth metal catalysts, and subsequently removing the catalyst residues...
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6841633 |
Lower α-alkene polymerization heterogeneous solid catalyst
A lower α-alkene polymerization heterogeneous solid catalyst which comprises a hydrated magnesium chloride derived procatalyst, a cocatalyst comprising an organoaluminium compound and a...
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6831138 |
Polymer-containing organo-metal catalysts
The invention relates to polymer-containing catalysts (e.g., polymer-containing organo-metal catalysts) that may be useful in various applications (e.g., polymerization of macrocyclic oligoesters)....
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6825146 |
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 solid precursor composition...
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6812305 |
Method for the production of a catalyst system for the polymerization of olefins
A catalyst system for the polymerization of olefins is prepared by initially charging one or more compounds of the formula I a or I b, subsequently adding a molecularly defined activator of the...
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6790805 |
Process for the in-situ preparation of single-site transition metal catalysts and polymerization process
The invention relates to a process for the in-situ preparation of alkylated single-site transition metal catalysts by contacting a precatalyst with an alkylating agent in the presence of one or...
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6790319 |
Method for recovering titanium compound, process for preparing titanium halide, and process for preparing catalyst for polymer production
A method for recovering a titanium compound includes bringing a waste solution containing a titanium alkoxide into contact with a halogenating agent to convert at least a part of the titanium...
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6759540 |
Crystalline MWW-type titanosilicate catalyst for producing oxidized compound, production process for the catalyst, and process for producing oxidized compound by using the catalyst
A crystalline titanosilicate catalyst which is usable as a catalyst in the oxidation reaction of a compound having a carbon-carbon double bond and at least one other functional group, a process for...
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6753287 |
Sol-gel hybrid materials containing precious metals as catalysts for partial oxidation of hydrocarbons
The present invention relates to a process for preparing a composition containing gold and/or silver particles and an amorphous, organic/inorganic titanium/silicon mixed oxide, the compositions...
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6720394 |
Supported olefin polymerization catalyst composition
Alumoxanes having C2-C12 alkyl groups can conveniently be used in supported olefin polymerization catalyst compositions prepared by contacting, either previous to or immediately before the...
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6680276 |
Method for preparing a supported catalyst system and its use in a polymerization process
The present invention relates to a composition of a carboxylate metal salt in combination with a heated polymerization catalyst to improve the flowability and operability of the catalyst. The...
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6649731 |
Catalysts for polyester production, process for producing polyester, and polyester
By the present invention, there are provided a catalyst for polyester preparation, which comprises a solid titanium compound containing titanium, oxygen, carbon and hydrogen and having a Ti—O...
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6646142 |
Process for the direct oxidation of olefins to olefin oxides
A process and catalysts for the direct oxidation of an olefin having three or more carbon atoms, such as propylene, by oxygen to an olefin oxide, such as prbpylene oxide. The process involves...
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6613712 |
Organometal catalyst compositions with solid oxide supports treated with fluorine and boron
The invention provides for compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein the composition comprises a post-contacted organometal compound, a...
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6559087 |
Method and apparatus for the continuous treatment of catalyst and catalyst support material
A method for the treatment of catalyst or catalyst support material in an apparatus in which the treatment is carried out continuously in such a way that the physical and/or chemical conditions...
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6548442 |
Organometal compound catalyst
This invention is directed to an organometal compound catalyst that is useful for polymerizing at least one monomer to produce a polymer. The catalyst is produced by combining a titanium, zirconium...
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6531518 |
Fischer-Tropsch catalyst enhancement
A process of enhancing both the activity and the methane selectivity of a particulate Dispersed Active Metal (“DAM”) hydrogenation catalyst is disclosed wherein the DAM undergoes low...
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6504039 |
Supported catalyst and the process for preparing the same
The present invention relates to supported catalysts which are composed of titanium oxide hydrates coated with nanoscale gold particles. The catalysts of the present invention have increased...
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6492293 |
Polymerisation catalyst
A catalyst for the polymerisation and copolymerisation of 1-olefins is disclosed which comprises 1) a late transition metal complex 2) optionally an activating quantity of an activator compound,...
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6482764 |
Method for producing a supported catalyst for ethylene polymerization and ethylene/α-olefin copolymerization
A method for producing a supported catalyst useful in polymerization of ethylene and copolymerization of ethylene and α-olefin is disclosed. The method includes treating the magnesium-containing...
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6455647 |
Solid catalyst for olefin polymerization and process for producing olefin polymer with the same
The present invention relates to a solid catalyst (D) for olefin polymerization comprising a magnesium-containing solid component (A) carrying thereon an organoaluminum-oxy compound (B) and a...
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6451934 |
Process for preparation of high 1,4-CIS polybutadiene
This invention relates to a process for preparation of high 1,4-cis polybutadiene and more particularly, to the process for preparing polybutadiene by polymerizing 1,3-butadiene monomer in the...
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6451725 |
Method for preparing catalyst components
Method for preparing a catalyst component for homo or copolymerization of olefins, said catalyst component comprising at least one metallocene compound on porous inorganic carrier, wherein said...
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6384161 |
Method and catalyst system for producing polyolefins with broadened molecular weight distributions
The present invention provides a process for preparing a supported metallocene catalyst system that can be used to catalyze formation of polyolefins having a wide molecular weight range. In...
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6376414 |
Method for producing catalysts containing ruthenium and the use thereof for hydrogenation
The invention relates to catalysts containing ruthenium and at least one other metal having an atomic number in the range of from 23 to 82 prepared by (a) mixing a suspension of a ruthenium...
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6359086 |
Non self-igniting solid
A free-flowing solid which does not self-ignite, comprising: a) at least one support component, b) at least one chemical compound which per se is self-igniting, c) at least one inert liquid and d)...
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6355593 |
Fischer-Tropsch catalyst enhancement
A process of enhancing both the activity and the methane selectivity of a Dispersed Active Metal (“DAM”) hydrogenation catalyst is disclosed wherein the DAM undergoes low temperature oxidation...
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6339136 |
Process for making propylene homo or copolymers
A process for homo or copolymerizing propylene, wherein propylene is polymerized in the presence of a catalyst at an elevated temperature in a reaction medium, in which a major part is formed by...
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6303532 |
Olefin polymerization catalyst containing a transesterification product of a lower alcohol and a phthalic acid ester
In the invention a catalyst composition intended for the polymerization of olefins has been provided, which has been prepared by bringing together magnesium chloride, a lower alcohol, a titanium...
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6291384 |
High activity catalyst prepared with alkoxysilanes
An ethylene-alpha-olefin copolymerization catalyst is prepared by impregnating a silica calcined at elevated temperature sequentially with an organomagnesium compound such as dialkylmagnesium...
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6268306 |
Method for preparing a catalyst suitable for polymerizing an olefin
A polymerization catalyst obtained by contacting metallic magnesium with an aromatic halide, RX, under conditions effective to obtain a first reaction product and solid residual products is...
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