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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 ...
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7202189 |
Shaped catalysts for transalkylation of aromatics for enhanced xylenes production
A catalyst, a process for using the catalyst whereby the catalyst effectively transalkylates C 7 , C 9 , and C 10 aromatics to C 8 aromatics are disclosed. The catalyst comprises a support such...
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7201844 |
Composite matrices with interstital polymer networks
The present invention relates in general to the preparation and use of matrices having solid spaces, interstitial spaces and interstitial polymer networks. In particular, the interstitial polymer...
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7201826 |
High performance natural zeolite microparticle retention aid for papermaking
A microparticle retention aid for use in papermaking containing a high performance purified natural zeolite pigment is disclosed. Use of the pigment facilitates manufacture of papers with improved...
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7199277 |
Pretreating a catalyst containing molecular sieve and active metal oxide
This invention relates to processes for converting oxygenates to olefins that include a step of pretreating catalyst, which comprises molecular sieve and one or more active metal oxides of one or...
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7199273 |
Selective hydrogenation of alkynes and/or diolefins
A process for selectively removing alkynes and/or diolefins from a feedstock also containing olefins comprises contacting the feedstock with hydrogen in the presence of a catalyst composition. The...
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7199255 |
Imino-amide catalysts for olefin polymerization
The present invention provides a catalyst precursor, a catalyst system comprising the precursor, and a polymerization method using the catalyst system, an embodiment of the precursor is selected...
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7199212 |
Polymerization catalyst for polyesters, polyesters produced with the same and process for producing polyesters
A novel polymerization catalyst for polyesters, which does not contain any germanium or antimony compound as the main component; polyesters produced with the catalyst; and a process for producing...
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7199201 |
Synthetic polyisoprene rubber
The neodymium catalyst system prepared by the technique of this invention can be used in the polymerization of isoprene monomer into synthetic polyisoprene rubber having an extremely high...
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7199195 |
Polyethylene resins
The invention provides ethylene/α-olefin copolymers exhibiting improved environmental stress cracking resistance properties, and methods for the production of the copolymers in a single reactor by...
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7199080 |
Process for producing activated carbon
A method of producing activated carbon comprising the steps of a) pyrolysing corn derivatives to generate char and b) activating the char to produce activated corn carbon.
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7199079 |
Purification catalyst for exhaust gas, production method therefor, and purification catalyst device for automobile exhaust gas
A purification catalyst for exhaust gas enhances the activities of the precious metals, preventing decrease of activities at high temperature, and exhibiting a satisfactory performance during...
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7199078 |
Vehicle sulfur oxide trap and related method
An automobile exhaust system includes a catalytic converter and a modified NOx trap wit improved sulfur tolerance. Sulfur oxide has a deleterious effect on the performance of nitrogen oxide traps....
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7199077 |
Fischer-tropsch catalyst prepared with a high purity iron precursor
A Fischer-Tropsch catalyst comprising iron and at least one promoter is prepared via a method which comprises the preparation of a high purity iron precursor and which uses a nominal amount of...
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7199076 |
Methods of making and using a selective hydrogenation catalyst
In an embodiment, a method of hydrogenating a highly unsaturated hydrocarbon to an unsaturated hydrocarbon includes contacting the highly unsaturated hydrocarbon with a catalyst in the presence of...
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7199075 |
Organometallic complexes that comprise bidentate chelating ligands that combine a nitrogen-containing heterocyclic compound with an alcohol and their use for catalyzing the oligomerization of olefins
A catalyst for the oligomerization of olefins, especially ethylene contains:
at least one nickel complex e.g. Li 2 Ni X 2 that results from bringing into contact a nickel salt e.g. a...
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7199074 |
Catalytic composition and its preparation and use for preparing polymers from ethylenically unsaturated monomers
A catalytic composition, including a cationic metal-pair complex, is disclosed, along with a method for its preparation. A method for the polymerization of ethylenically unsaturated monomers using...
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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...
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7199072 |
Process of producing a supported mixed catalyst system and polyolefins therefrom
A process for preparing a mixed catalyst compound used in the polymerization of polyolefins to produce bimodal polyethylenes is disclosed. In an embodiment, a process of preparing the mixed...
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7199071 |
Catalyst component for polymerization of olefins, catalyst containing the component and use of the same
The present invention relates to a catalyst component suitable for olefin (co)polymerization, which comprises an aluminoxane supported on magnesium halide and contains more than 5% by weight of...
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7199070 |
Conversion catalyst for ethylbenzene containing xylenes and process for converting ethylbenzene containing xylenes by using catalyst
A catalyst in which X-ray diffraction intensity ratio of the crystal lattice plane spacing d-value of 0.196±0.002 nm to the crystal lattice plane spacing d-value of 0.386±0.008 nm is in a range...
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7199069 |
Method for destruction of organic compounds by co-oxidation with activated carbon
A method for oxidizing carbon adsorbable organic compounds in a controlled manner within a bed of activated carbon. The bed of activated carbon is exposed to a source of molecular oxygen, such as...
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7199068 |
Reactive distillation alkylation process including in situ catalyst regeneration
A unified process which couples a unique in situ catalyst regeneration process with a continuous reactive distillation under pressure for the alkylation of light aromatic hydrocarbons such as...
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7198771 |
Polymeric and carbon compositions with metal nanoparticles
The invention comprises a chemical composition with the structure shown below. The composition can be polymerized or pyrolyzed, forming transition metal nanoparticles homogeneously dispersed in a...
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7198712 |
Processing for eliminating sulfur-containing compounds and nitrogen-containing compounds from hydrocarbon
For desulfurization and, if necessary, for denitrification of hydrocarbon fractions the hydrocarbon mixture is brought into contact with a non-aqueous ionic liquid of general formula Q + A − ,...
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7198661 |
Gas purification medium for removing sulfides from gaseous streams
A gas purification medium for removing sulfides from a gaseous stream which includes tailings containing mixed metal oxides produced from a high pressure hydrometallurgical leaching process of a...
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7197822 |
Metallic honeycomb structure and process for producing the same
A honeycomb structure includes a plurality of substantially parallel channels, a layer of at least partially structured metal foils and a housing. The layer includes a number N of at least...
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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...
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7196152 |
Modified Ziegler catalyst, process for preparing it and process for preparing poly-1-olefins in its presence
The invention relates to a modified Ziegler catalyst for preparing a poly-1-olefin in suspension, in solution or in the gas phase, which catalyst comprises the reaction product of a magnesium...
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7196148 |
Cationic catalyst system
A 3+ metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by a anionic multidentate ligand and at least two monoanionic ligands. The...
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7196037 |
Catalyst carrier and method of producing same
A method of producing a catalyst carrier. The method comprises contacting a silicon-containing ceramic material with a solution of an aluminum containing metal compound, firing the resulting...
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7196036 |
Catalyst for decomposition of hydrocarbons, process for producing the catalyst, and process for producing hydrogen using the catalyst
A catalyst for decomposition of hydrocarbons, comprises porous oxide particles containing magnesium and aluminum, and fine metallic nickel particles which are present in the vicinity of surface of...
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7196035 |
Ni hydrogenation catalysts, manufacture and use
Improved Ni catalysts for hydrogenation reactions are disclosed. The catalysts are useful for hydrogenation such as selective hydrogenation of acetylenic impurities in crude olefin and diolefin...
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7196034 |
Nickel-iron-silica-alumina
The invention is directed to a catalyst suitable for the hydrogenation of hydrocarbon resins, comprising a supported nickel on silica and alumina catalyst, said catalyst having a nickel content of...
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7196033 |
Advances in amination catalysis
Provided herein are catalysts useful in reductive amination, which include nickel, copper, zirconium and/or chromium, oxygen, and tin. The presence of the tin increases the selectivity of the...
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7196032 |
Fluoroalcohol leaving group for non-metallocene olefin polymerization catalysts
A catalyst composition and method for olefin polymerization are provided. In one aspect, the catalyst composition is represented by the formula α a β b γ g MX n wherein M is a metal; X is a...
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7196031 |
Catalyst composition
A catalyst composition for polymerization of a conjugated diene or copolymerization of a conjugated diene and an aromatic vinyl compound, which comprises the following components: (A) a...
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7196030 |
Method for producing alkoxylated products at optimized reaction pressures
The present invention relates to a process for the preparation of at least one alkoxylate comprising the bringing into contact of an alkylene oxide mixture at least comprising ethylene oxide with...
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7196029 |
Process and catalysts for upgrading of hydrocarbons boiling in the naphtha range
The present invention relates to the use of a catalytic system comprising a metal of group VIII, a metal of group VI, a metal oxide as carrier and suitable quantities of a component selected from a...
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7195746 |
Interior surface modifications of molecular sieves with organometallic reagents and the use thereof for the conversion of oxygenates to olefins
A method for making an organometallic treated molecular sieve is described in which a molecular sieve having at least one hydroxyl group and at least [AlO 2 ] and [PO 2 ] tetrahedral units and...
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7193099 |
Racemoselective preparation of isolable ansa-metallocene biphenoxide complexes
The invention relates to a process for preparing racemic metallocene biphenoxide complexes by reacting bridged transition metal complexes with cyclopentadienyl derivatives of alkali metals or...
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7193022 |
Method of polymerization and copolymerization of ethylene
Disclosed is a method of polymerization and copolymerization of ethylene, which is carried out in the presence of (a) a solid titanium complex catalyst prepared by the steps of (i) preparing a...
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7192902 |
Polymerization process with mixed catalyst compositions
The application describes a mixed olefin polymerization catalyst composition comprising a support, a reaction product of at least one first organometallic compound and a first activator capable of...
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7192901 |
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 or solid aluminum compound with a supported catalyst compound, and heating...
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7192900 |
Hydrocracking catalyst
Hydrocracking catalyst composition comprising an optional metal hydrogenation component supported on a carrier comprising a zeolite of the faujasite structure having a unit cell size in the range...
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7189792 |
Catalyst for synthesizing high trans polymers
The process and catalyst of this invention can be utilized to synthesize homo and copolymers of conjugated diene monomers and vinyl aromatic monomers having high trans contents of greater than 60%...
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7189791 |
Catalyst composition II
This invention relates to a transition metal catalyst compound represented by the formula: LMX 2 or (LMX 2 ) 2 wherein each M is independently a Group 7 to 11 metal, preferably a Group 7, 8, 9,...
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7189790 |
Catalyst component for olefin polymerization, catalyst for α-olefin polymerization and process for the production of α-olefin polymer
To develop a catalyst component for olefin polymerization, a metallocene catalyst for olefin polymerization and a process for the production of an olefin polymer capable of producing an olefin...
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7189675 |
Olefin polymerization catalyst on plasma-contacted support
A method for preparing an olefin polymerization catalyst is disclosed. An inorganic oxide is contacted with plasma and a transition metal compound is supported on the contacted inorganic oxide. The...
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7189674 |
Supported catalyst composition for polymerization of olefins, method for preparing the same and process for polymerization using the same
Supported catalyst composition for polymerization of olefins comprising: (i) a titanium compound, a magnesium compound and at least one electron donor compound; (ii) an oxygen containing polymer...
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