Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7402544 | Mesoporous carbon molecular sieve and supported catalyst employing the same The present invention is related to a mesoporous carbon molecular sieve, which can be used as a catalyst carrier capable of improving the activity of a supported catalyst and a method of preparing the same. Additionally, the invention is related to a supported catal... | 07/22/2008 |
| 7396522 | Catalyst useful for removal of hydrogen sulphide from gas stream and its conversion to sulphur, a process for preparing such catalyst and a method for removing of hydrogen sulphide using said catalyst The present invention relates to a catalyst useful for removal of hydrogen sulphide from gas streams and its conversion to sulphur, a process for preparing such catalyst and a method for removing of hydrogen sulphide using said catalyst. ... | 07/08/2008 |
| 7384887 | Attrition resistant molecular sieve catalysts This invention is directed to a hardened molecular sieve catalyst composition, a method of making the composition and a method of using the composition. The catalyst composition is made by mixing together molecular sieve, liquid, and an effective hardening amount of... | 06/10/2008 |
| 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 150° C. ... | 06/03/2008 |
| 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 that includes at least one titanium compound, at least one magnesium c... | 06/03/2008 |
| 7354750 | Methods for separating molecules The present invention provides compositions and methods for the separation of metals or molecules such as polypeptides, nucleic acids, or endotoxins using a metal-modified solid support. The metals or molecules are isolated from a starting material using the modifie... | 04/08/2008 |
| 7348383 | Spray-dried, mixed metal ziegler catalyst compositions A Ziegler-Natta catalyst composition comprising a solid mixture formed by halogenation of: Al) a spray-dried catalyst precursor comprising the reaction product of a magnesium compound, a non-metallocene titanium compound, and at least one non-metallocene compound of... | 03/25/2008 |
| 7309677 | Supported polymerisation catalysts A method for the preparation of a supported transition metal catalyst system which includes the steps of: (i) mixing together in a suitable solvent (a) an aluminoxane and (b) an ionic activator containing a cation and an anion, wherein the anion has at least one sub... | 12/18/2007 |
| 7304015 | Compositions for separating molecules The present invention provides compositions for the separation of metals or biomolecules such as polypeptides, nucleic acids, or endotoxins using modified solid supports. ... | 12/04/2007 |
| 7304016 | Compositions for separating molecules The present invention provides compositions for the separation of metals or biomolecules such as polypeptides, nucleic acids, or endotoxins using modified solid supports. ... | 12/04/2007 |
| 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 titanium compound to cause the solid compound to vaporize, optionally a... | 08/28/2007 |
| 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 that includes at least one titanium compound, at least one magnesium c... | 08/21/2007 |
| 7244795 | Polymerization process using metallocene catalyst systems The present invention relates to a polymerization process using improved metallocene catalyst systems. Specifically, the catalyst systems of the present invention relate to a metallocene compound having optimized metals loading and activator concentration, and demon... | 07/17/2007 |
| 7217512 | Reagent and method for attaching target molecules to a surface The present invention provides a method and reagent composition for attachment of target molecules onto the surface of a substrate, such as microwell plates, tubes, beads, microscope slides, silicon wafers or membranes. In one embodiment, the method and composition ... | 05/15/2007 |
| 7217676 | Hydrophobization and silica for supported catalyst This invention relates to a catalyst support comprising the result of the combination of: (a) a support comprising hydroxyl groups; (b) a capping agent comprising a boron containing Lewis acid; and (c) an ionic activator, where... | 05/15/2007 |
| 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 the combination to at least 150° C. ... | 03/20/2007 |
| 7183236 | Ceramic catalyst body An object of the present invention is to realize low pressure loss and high purification performance in a constitution in which a primary catalyst component and co-catalyst component are loaded onto a ceramic support that allows catalyst components to be loaded dire... | 02/27/2007 |
| 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 spherical particles having an average particle size ranging from abou... | 01/09/2007 |
| 7060766 | Methods of forming a supported activated catalyst composition Processes of forming a supported activated catalyst composition and method of polymerization are disclosed, the process of forming the composition including combining a halogenated aromatic aluminum activator compound with a fluorinated support and a catalyst to for... | 06/13/2006 |
| 7041617 | Catalyst compositions and polyolefins for extrusion coating applications 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 supported catalyst composition. In one aspect, the present invention enco... | 05/09/2006 |
| 7022643 | Production process for catalyst There is disclosed a production process for a catalyst which process makes it possible to efficiently carry out the supporting of a catalytic component onto a carrier and to obtain the catalyst excellent in quality and performance. This production process is a produ... | 04/04/2006 |
| 7022473 | Substrates for immobilizing and amplifying DNA and DNA-immobilized chips Substrates for producing a DNA library are produced by immobilizing DNA onto a suitable substrate having excellent thermal conductivity. A surface of the substrate is chemically modified with a radical having a terminal polar radical. DNA can be amplified by the PCR... | 04/04/2006 |
| 7009012 | Supported catalyst for producing syndiotactic styrenic polymer The present invention provides a supported catalyst comprising (A) a polymer (B) a supporter, (C) a transition metal compound, and optionally (D) (a) a compound which can form an ionic complex by the reaction with the transition metal compound or (b) a specific oxyg... | 03/07/2006 |
| 7001968 | Olefin polymerization processes and products thereof A novel loop/slurry olefin polymerization process is provided which produces ultra-high molecular weight ethylene homopolymer. ... | 02/21/2006 |
| 6992032 | 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 polymerizing at least one monomer to produce a polymer, wherein said cata... | 01/31/2006 |
| 6916758 | Fibrous catalyst-immobilization systems The present invention provides a fibrous catalyst-immobilization system that can be employed for immobilizing catalysts that are subject to fluid flow within a chemical production process. The fibrous systems can be synthesized using electrospinning and the catalyst... | 07/12/2005 |
| 6896857 | Exhaust gas purifying catalyst and method for manufacturing the same An exhaust gas purifying catalyst comprises a powder including a porous material having a specific surface area of 150 m2/g or more, cerium and platinum. Cerium and Platinum are loaded on the porous material. The powder has platinum dispersion of 70% or m... | 05/24/2005 |
| 6887818 | Supported titanium catalyst system A supported titanium catalyst system comprising a titanium catalyst bound via at least one heteroatom, a functionalized support, said heteroatom being connected to said support via an organic group. ... | 05/03/2005 |
| 6878787 | Polyamide 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 produce syndiotactic polypropylene or isotactic polypropylene. The support... | 04/12/2005 |
| 6858685 | Solid catalyst component for olefin polymerization, process for producing the same, process for producing catalyst for olefin polymerization, and process for producing olefin polymer There is provided a process for producing a catalyst for olefin polymerization, which comprises the step of contacting (1) an organ aluminum compound, (2) an external electron donor compound and (3) a solid catalyst component obtained by a process comprising the ste... | 02/22/2005 |
| 6841499 | Supported ferrocene-based catalysts for selective aldehyde hydrogenation A supported catalyst comprises a cationic rhodium(I) complex of the formula wherein R1 and R2 are the same or different hydrocarbon groups of up to 30 C atoms, or R1 and R2 a... | 01/11/2005 |
| 6828396 | Solid catalyst component and catalyst for olefin polymerization, process for producing olefin polymer and process for producing solid catalyst component for olefin polymerization There are provided: (I) a solid catalyst component (A-1) for olefin polymerization, which is obtained by a process comprising the step of contacting: (a-1) a carrier of carboxyl group-carrying polymer p... | 12/07/2004 |
| 6806221 | Method for preparing a spray-dried composition for use as a polymerization catalyst A method of making a spray-dried composition using a solution or mixture 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 spherical particles ha... | 10/19/2004 |
| 6787497 | Chemical product and process The invention concerns a catalyst carrier comprising a fibre paper impregnated with a slurry comprising silica sol, micro fibres and a filler, wherein said micro fibres have an equivalent average particle size, measured with sedigraph method, from about 200 nm to ab... | 09/07/2004 |
| 6780805 | Zeolite/alumina catalyst support compositions and method of making the same Zeolite/alumina composite, and a method for making, the composite for use as a catalyst substrate or catalyst carrier and comprising zeolite having a silica/alumina ratio of greater than 300 and gamma alumina having a specific surface area of greater than 100 m... | 08/24/2004 |
| 6723808 | Catalyst system and its use in a polymerization process Disclosed are polymerization catalyst activator compositions which include a carbonium cation and an aluminum containing anion. These activator compositions are prepared by combining a carbonium or trityl source and with an aluminum containing complex, preferably a ... | 04/20/2004 |
| 6682650 | Zeolite catalyst carrier and hydrogenation catalyst using same A catalyst support including a zeolite having an Al/Si atomic ratio of 0.01-0.1 and mesopores having a pore diameter in the range of 5-30 nm, and ultrafine particles composited to inside walls of the mesopores. The superfine particles are those of an oxid... | 01/27/2004 |
| 6664352 | Supported polymerization catalysts The invention provides a process for the preparation of a supported polymerization catalyst, said process comprising impregnating a porous particulate support in a mechanically fluidized state with a catalyst material.... | 12/16/2003 |
| 6653416 | Polymerization process utilizing organometal catalyst compositions and the polymer produced thereby 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 polymerizing at least one monomer to produce a polymer, wherei... | 11/25/2003 |
| 6645900 | Optimized method for the production of catalyst supports based on silica gel and chromium catalysts supported on silica gel The invention relates to a catalyst support and to a method for the production of the catalyst support comprising the following steps: a) production of a silicic acid hydrogel having a solids content of from 10 to 25% by weight (calculated as SiO2 | 11/11/2003 |
