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7355058 |
Haloaluminoxane compositions, their preparation, and their use in catalysis
Novel haloaluminoxane compositions have been formed. The halogen is fluorine, chlorine, and/or bromine, and the amount of halogen atoms present in said composition is in the range of about 0.5 mole...
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7244498 |
Nanoparticles modified with multiple organic acids
Surface-modified nanoparticles of boehmite, and methods for preparing the same. Aluminum oxyhydroxide nanoparticles are surface modified by reaction with selected amounts of organic acids. In...
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7193100 |
Haloaluminoxane compositions, their preparation, and their use in catalysis
Novel haloaluminoxane compositions have been formed. The halogen is fluorine, chlorine, and/or bromine, and the amount of halogen atoms present in said composition is in the range of about 0.5 mole...
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7141527 |
Catalyst system and process for the polymerization of olefins
A catalyst system for the polymerization of olefins comprising the product obtained by contacting:
(A) a metallocene complex; (B) an organometallic aluminium compound of formula (II):
...
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7135427 |
Carboxy-modified aluminum-based catalyst compositions
A carboxy-modified aluminum-based catalyst composition is of the general formula P(O)(OAlR′R″) 3 or RP(O)(OAlR′R″) 2 wherein O represents oxygen, P represents pentavalent phosphorous, Al...
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7115764 |
Mechanical shear based synthesis of alumoxane nanoparticles
A method for forming carboxylate-alumoxane nanoparticles comprises subjecting a mixture comprising boehmite and carboxylic acid to mechanical shear. The method can be carried out at a temperature...
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7034173 |
Chemical products suited for use as co-catalysts, method for the preparation thereof and their use in catalyst systems for producing polyolefins
The invention relates to chemical products which are suited for use as co-catalysts and which can be obtained by reacting a compound of formula (I), M 1 R 1 R 2 (R 3 ) m with a compound of formula...
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7030258 |
Water-capturing agent and organic EL device
A water-capturing agent capable of inhibiting the generation and growth of a darkspot and an organic EL device including the water-capturing agent are provided. The organic EL device uses the...
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7026496 |
Diamido alkoxides as polymerisation initiators
The present invention relates to a complex having the formula (I) wherein M is selected from Sn(II), Sn(IV), Al(III) and Mg(II); each of R 1 and R 2 is independently hydrocarbyl; R 3 is H or...
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6933046 |
Releasable corrosion inhibitor compositions
A new class of releasable corrosion inhibiting materials for protective coatings, methods of making the same, methods of using the same, and coatings containing the same are provided. The materials...
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6737379 |
Aluminum-oxy compound, catalyst component for polymerizing olefin, and method for producing polyolefin
Provided are an aluminium-oxy compound obtained through reaction of an organoaluminium compound with water, which is soluble in hydrocarbon solvents and in which the amount of the organoaluminium...
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6713641 |
Reactive anthraquinone colorant compounds and polymeric materials reacted therewith
Disclosed are blue, diol anthraquinone blue colorant compounds having excellent thermal stability and which can be reacted into or copolymerized with polyester thus providing a blue-colored...
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6562991 |
Gelatinous compositions formed from hydroxyaluminoxane, solid compositions formed therefrom, and the use of such compositions as catalyst components
Gelatinous compositions of matter which are useful as polymerization catalyst components and are highly stable in terms of OH-decay rate, as well as similarly stable solid compositions of matter...
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6524985 |
Catalyst components for polymerization of olefins and use thereof
Disclosed is a catalyst component for the polymerization of olefins, which is a compound having the following structure: wherein R 1 is a hydrocarbon radical having 1 to 10 carbon atoms or a...
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6518445 |
Methylaluminoxane compositions, enriched solutions of such compositions, and the preparation thereof
The methylaluminoxane composition (MAOC) is a solid at 25° C. that has a total aluminum content of about 39 to 47 wt %. The MAOC is either free of aluminum as trimethylaluminum (TMA) or if TMA is...
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6413900 |
Metallocene stabilized alumoxane
Stabilized alumoxane solutions are provided as well as a method for producing such solutions. The method generally involves the use of metallocene catalyst component(s) that when mixed with...
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6322890 |
Supra-molecular alkylalumoxanes
Heterogeneous solid supra-molecular alkylalumoxanes. A supra-molecular architecture of a nano-particle foundation on which an alkylalumoxane is built. Supra-molecular alkylalumoxanes comprise (a)...
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6214760 |
Catalyst activator composition
A composition comprising a mixture of aluminum containing Lewis acids said mixture corresponding to the formula: (Ar f 3 Al)(AlQ 1 3 ) y (--AlQ 2 --O--) z where; Ar f is a fluorinated...
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6207130 |
Metal-exchanged carboxylato-alumoxanes and process of making metal-doped alumina
A method has been developed for the solution-based metal exchange of carboxylato-alumoxanes [Al(O) x (OH) y (O 2 CR) z ] n with a wide range of metal cations. Metal-exchanged...
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6194340 |
Method of stabilizing hydrocarbylaluminoxanes
A solution of a siloxy-aluminoxane composition formed by mixing (i) a hydrocarbylsiloxane substantially free of hydroxyl groups with (ii) an aluminoxane, in an organic solvent medium in which the...
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6153550 |
Olefin polymerization catalyst based on metallocene complexes and perfluorinated oligoaryl derivatives of aluminates
The invention relates to a catalyst composition for olefin polymerization comprising metallocene complexes and novel cocatalysts belonging to the group of perfluorinated oligoarylaluminates,...
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6060418 |
Supported hydrocarbylsiloxy-aluminoxane catalyst compositions
Catalysts deposited on a support are described. The catalyst itself is formed by combining (i) a metallocene of a transition, lanthanide or actinide metal and (ii) a siloxy-aluminoxane composition...
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6046347 |
Aluminoxane synthesis employing reduced amount of trialkylaluminum compound
A catalytically active aluminoxane can be synthesized from a precursor formed by the combination of at least one trialkylaluminum compound and at least one organoaluminum compound containing a...
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6034024 |
Heat treated alumoxanes
A process is described which comprises heating a methylalumoxane solution in an aromatic hydrocarbon solvent at a temperature of at least 35° C. for at least 0.5 hour in an inert, dry atmosphere...
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6013820 |
Alkylaluminoxane compositions and their preparation
The reaction between an alkylaluminum compound such as trimethylaluminum and carbon dioxide or an organic carbonyl reagent such as benzoic acid or benzophenone is facilitated and accelerated by...
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5902891 |
Aluminoxane process and product
An aluminoxane product is prepared by reacting water which contains a stabilizing agent, such as a lithium halide, with a hydrocarbyl aluminum compound, such as tri-methylaluminum, in an organic...
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5902766 |
Alumoxanes, catalysts utilizing alumoxanes and polymers therefrom
A catalyst which exhibits superior control of product particle size in the insertion polymerization of alpha-olefins is described as transition metal compounds which associate with non-coordinating...
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5847177 |
Production of hydrocarbon-soluble hydrocarbylaluminoxanes
Novel aluminum-containing compositions having increased paraffin-solubility are produced from a methylaluminoxane composition having lower paraffin-solubility. These compositions are formed by...
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5831109 |
Polyalkylaluminoxane compositions formed by non-hydrolytic means
The present invention relates to a process which comprises the non-hydrolytic transformation of an aluminoxane precursor composition, comprising carbon-to-oxygen bonds which can be alkylated by an...
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5777143 |
Hydrocarbon soluble alkylaluminoxane compositions formed by use of non-hydrolytic means
A hydrocarbon-soluble alkylaluminoxane composition, such as, methylaluminoxane or even a modified methylaluminoxane, can be prepared by preparing an alkylaluminoxane precursor via non-hydrolytic...
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5744577 |
Process for producing polyketones
A process for preparing polylketones by polymerizing a mixture of carbon monoxide and one or more olefins in the presence of a group VIII metal catalyst which is prepared by reacting together: ...
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5739368 |
Use of heat treated alumoxanes in preparing supported catalysts
Alumoxane, and especially methylalumoxane, which provide supported metallocene and/or transition metal catalyst compositions having increased activity are prepared by heating the alumoxane prior to...
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5731253 |
Hydrocarbylsilloxy - aluminoxane compositions
Siloxy-aluminoxane compositions which are the reaction products of hydrocarbylsiloxanes substantially-free of Si--OH groups, and aluminoxanes and which have improved solubility and stability in...
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5728855 |
Modified polyalkylaluminoxane composition formed using reagent containing carbon-oxygen double bond
The present invention relates to a process for forming a composition comprising oligomeric alkylaluminoxane, e.g., preferably methylaluminoxane, and moieties having the structure--OC(R) 3 , where R...
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5728640 |
Preparation of supported metallocene/aluminoxane solid catalyst
A process for preparing a supported metallocene/aluminoxane solid catalyst comprises preparing a water-in-oil emulsion of water and an inert solvent by using an emulsifier, adding dropwise the...
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5670682 |
Liquid clathrate aluminoxane compositions
Stable liquid clathrate aluminoxane compositions are obtained by the reaction, in aromatic solvents, of aluminoxanes such as, methylaluminoxane, with organic, inorganic or organometallic compounds,...
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5670589 |
Organoaluminoxy product, catalyst systems, preparation, and use
In accordance with the present invention, there is provided an organoaluminoxy product prepared by the process comprising reacting an organoaluminoxane with an ene-ol compound. In another...
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5663394 |
High yield aluminoxane synthesis process
Water, hydrocarbylaluminum such as trimethylaluminum, and organic solvent such as toluene are fed to a reactor in controlled proportions and under temperature control to form a dilute reaction...
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5614596 |
Double alkoxide monomers oligomers and polymers
A process for the preparation of polymetallooxanes employing inexpensive metal sources such as sand, alumina, and rutile involves dissolving one or more group IIIa, IVa, IVb metaloxy compounds such...
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5606087 |
Process for making aluminoxanes
An improved process for making aluminoxanes by the addition of water to a solvent solution of a hydrocarbylaluminum compound and/or an aluminoxane feeds the water through an orifice which is...
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5599964 |
Continuous process for preparing hydrocarbylaluminoxanes
Aluminoxane is made by feeding water, hydrocarbylaluminum and organic solvent to a loop recycle reactor under conditions so as to react the water and hydrocarbylaluminum to form a...
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5565395 |
Aluminoxanate compositions
An aluminoxanate composition which can be used as a co-catalyst with transition, lanthanide or actinide metal compounds such as metallocenes comprises the solid reaction product of an aluminoxane...
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5534474 |
Process for preparing aluminoxane on inert support material
The invention relates to a process for preparing alkylaluminoxanes immobilized on inert support materials from alkylaluminum compounds and water, which is characterized in that the reactants are...
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5527930 |
Aluminoxanes having increased catalytic activity
Alkylaluminoxanes having improved catalytic activity such as when they are used in combination with metallocenes for the polymerization of alpha-olefins, are prepared by treating an organic solvent...
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5480948 |
Olefin polymerization process
In accordance with the present invention, there is provided a solid organoaluminoxy product prepared by reacting an organoaiuminoxane with an oxygen-containing compound selected from the group...
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5461082 |
Dried aluminum hydroxide gel, a method for preparing the dried gel, and an antacid
The object of the present invention is to prepare a dried aluminum hydroxide gel featuring excellent acid neutrizing capacity, but which is also stable. A dried aluminum hydroxide gel with a...
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5436212 |
Organoaluminoxy product, preparation, and use
In accordance with the present invention, there is provided a solid organoaluminoxy product prepared by reacting an organoaluminoxane with an oxygen-containing compound selected from the group...
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5418298 |
Neutral and mixed neutral/anionic polymetallooxanes
This invention relates to polymetallooxanes having the moiety: ##STR1## wherein n is 1.5, 2, 3, 4, 5 or 6, M 1 is selected from the group consisting of Si, Ge, Sn, Al, Ga, Ti, Zr, or Hf, R 1 and...
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5416229 |
Polymethylaluminoxane of enhanced solution stability
Polymethylaluminoxane compositions having increased solution stability in organic solvent and, in some cases, increased polymerization activity, which comprise moieties derived from an organic...
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5415946 |
Vapor-deposition material for the production of optical coatings of medium refractive index
The invention relates to a vapor-deposition material for the production of optical coatings of medium refractive index by deposition-coating of substrates in vacuo. The material is a compound of...
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