Chalcogen Containing Preservative Or Stabilizer Patents (Class 556/5)
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Patent number: 7312251Abstract: Stable rare earth tris (organophosphate) solutions comprise a rare earth tris (organophosphate) and a hydrocarbon solvent. From about 2% to about 10% rare earth element, preferably from about 3% to about 8%, is present in the solutions. The rare earth tris (organophosphate) solutions are stable from precipitation of the rare earth tris (organophosphate) for at least about fifteen (15) days, preferably for at least about twenty (20) days and most preferably at least about thirty (30) days. A process for preparing these solutions is described herein. A stabilizing additive, acid, glycol or mixtures thereof, is utilized to inhibit precipitation. The molar ratios of free acid, glycol and/or water to the rare earth element are controlled to inhibit precipitation.Type: GrantFiled: April 7, 2004Date of Patent: December 25, 2007Assignee: Rhodia Rare Earths, Inc.Inventors: Kenan Yunlu, Min He
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Patent number: 7067165Abstract: A mineral fortified food matrix can comprise a dimetalhydroxy malate composition and a food matrix fortified with the dimetalhydroxy malate composition. Additionally, a method of administering a mineral in a bioavailable form to a warm-blooded animal can comprise steps of fortifying a food matrix with a dimetalhydroxy malate composition and orally administering the food matrix to a warm-blooded animal. In one embodiment, the mineral can be calcium and the method of administering calcium in a bioavailable form can comprise fortifying a food matrix with a dicalciumhydroxy malate composition.Type: GrantFiled: January 21, 2004Date of Patent: June 27, 2006Assignee: Albion International, Inc.Inventors: Jennifer Hartle, Stephen D. Ashmead, Robert Kreitlow, Earl Christiansen
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Patent number: 6927264Abstract: A metal complex useful as a component of a catalyst composition for addition polymerizations comprising an anionic, polycyclic, fused ring ligand system containing at least 4 fused rings, at least one such ring comprising at least one heteroatom, said ligand being bonded to M by means of delocalized ?-electrons and an addition polymerization process using the same.Type: GrantFiled: May 27, 2004Date of Patent: August 9, 2005Assignee: Dow Global Technologies Inc.Inventors: Shaoguang Feng, Ravi B. Shankar, Francis J. Timmers
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Patent number: 6767927Abstract: Stable rare earth tris (organophosphate) solutions comprise a rare earth tris (organophosphate) and a hydrocarbon solvent. From about 2% to about 10% rare earth element, preferably from about 3% to about 8%, is present in the solutions. The rare earth tris (organophosphate) solutions are stable from precipitation of the rare earth tris (organophosphate) for at least about fifteen (15) days, preferably for at least about twenty (20) days and most preferably at least about thirty (30) days. A process for preparing these solutions is described herein. A stabilizing additive, acid, glycol or mixtures thereof, is utilized to inhibit precipitation. The molar ratios of free acid, glycol and/or water to the rare earth element are controlled to inhibit precipitation.Type: GrantFiled: April 25, 2000Date of Patent: July 27, 2004Assignee: Rhodia Rare Earths Inc.Inventors: Kenan Yunlu, Min He
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Patent number: 6706904Abstract: Dimetalhydroxy malate compositions as well as methods of administering and making such bioavailable compositions are provided. The metal used can be any nutritionally relevant divalent metal such as calcium, magnesium, zinc, copper, manganese, and iron. The composition can be prepared by reacting malic acid with a divalent metal oxide or hydroxide at a 1:2 molar ratio. The composition can be administered to a warm-blooded animal by any of a number of known delivery routes, including oral delivery.Type: GrantFiled: December 4, 2002Date of Patent: March 16, 2004Assignee: Albion International, Inc.Inventors: Jennifer Hartle, Stephen D. Ashmead, Robert Kreitlow
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Patent number: 6087515Abstract: A metallocene corresponding to the formula ##STR1## wherein M is a group 4 transition metal, each Y is, independently, selected from the group of halogen, hydrocarbyl and hydrocarbyloxy,R.sup.1, R.sup.4 are, independently, selected from the group of hydrogen, hydrocarbyl, hydrocarbyloxy,R.sup.2, R.sup.3, R.sup.5, R.sup.6, R.sup.7, R.sup.8 are, independently, selected from the group of hydrogen, hydrocarbyl, hydrocarbyloxy, with the provision that, respectively, R.sup.2 and R.sup.3, R.sup.5 and R.sup.6, R.sup.7 and R.sup.8 can be linked to each other.A process for the preparation of metallocenes comprising the following steps:(a) contacting, in a solvent, a transition metal halide of formula MX.sub.4 with an organometallic compound of formula M'R.sub.Type: GrantFiled: October 7, 1998Date of Patent: July 11, 2000Assignee: Solvay Polyolefins Europe-Belgium (Societe Anonyme)Inventors: John J. Eisch, Yun Qian, Jurgen Weber, Nicola Zandona, Fabian Siberdt
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Patent number: 5030741Abstract: The invention relates to cyclic organometallic compounds which are intramolecularly stabilized and also to their use to produce thin films and epitaxial layers by gas-phase deposition.Type: GrantFiled: May 18, 1989Date of Patent: July 9, 1991Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Dietrich Erdmann, Ludwig Pohl, Martin Hostalek, Matthias Lokai
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Patent number: 4861500Abstract: A crosslinker composition that can produce delayed crosslinking of an aqueous solution of a crosslinkable organic polymer. The composition comprises an organic titanium complex. The composition further contains an organic hydroxycarboxylic acid, preferably hydroxyacetic acid. The pH of the composition is preferably less than 5. The pH of the composition is further preferably such that when sufficient amount of composition is added to an aqueous polymer solution to result in delayed crosslinking of the polymer, the composition produces a pH in the resulting gel solution, preferably of between about 3 to about 4.5. Gel solutions produced using the composition are particularly useful in fracturing subterranean formations, and in particular in fracturing subterranean formations penetrated by an oil well in which fracturing process carbon dioxide and a proppant are added to the fracturing fluid.Type: GrantFiled: November 17, 1986Date of Patent: August 29, 1989Assignee: Dowell Schlumberger IncorporatedInventor: Richard M. Hodge
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Patent number: 4812333Abstract: A metal sulfide thin film, such as a zinc sulfide thin film, is formed by thermal decomposition of a metal mercaptide or other suitable metallo-organic compound having a metal-to-sulfur bond. To produce the film, the metallo-organic compound is applied to a substrate in a solution that also contains a sulfur to facilitate dissolution of the compound and enhance stability of the solution. It is also found that sulfur addition reduces carbon contamination of the product sulfide thin film.Type: GrantFiled: May 2, 1988Date of Patent: March 14, 1989Assignee: General Motors CorporationInventor: Adolph L. Micheli
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Patent number: 4659847Abstract: The present invention provides chemically stable colloidal antimony oxide which has been treated with a particular organosilicon compound in the ratio of from 0.5 to 25 weight % based on the antimony and whose pH has been regulated to within the range of from 2 to 12.Type: GrantFiled: March 29, 1985Date of Patent: April 21, 1987Assignee: Japan Exlan Company, Ltd.Inventors: Toshiyuki Kobashi, Hideo Naka
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Patent number: 4644073Abstract: A sulfate-free clear green solution of chromium(III) propionate is prepared by mixing aqueous propionic acid containing up to 55 weight percent propionic acid with a chromium(VI) oxidant, such as a dichromate or chromate, and a sulfur-containing reductant, such as a bisulfite, which on reacting yields two phases: a lower sulfate-containing phase for discard or recycle and an upper phase solution of sulfate-free clear green propionate-sequestered chromium(III), the latter phase being stabilized with additional acid. The upper phase solution is useful for crosslinking polymeric viscosifiers such as partially hydrolyzed acrylamide-based polymers and the like in permeability contrast corrections in enhanced oil recovery operations.Type: GrantFiled: March 11, 1985Date of Patent: February 17, 1987Assignee: Phillips Petroleum CompanyInventors: Naim A. Mumallah, Tod K. Shioyama
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Patent number: 4636572Abstract: A process for preparing clear green chromium(III) propionate solutions which comprises admixing such as propionic acid with water, a chromium(VI) source such as dichromate, adding thereto a nitrite, such as sodium nitrite, to reduce the chromium(VI) to chromium(III), in the presence of excess acid, preferably propionic acid, optionally combined with additional acid such as muriatic acid, to produce a stable solution useful with polymers, such as partially hydrolyzed acrylamide-based polymers, in permeability contrast correction procedures for high permeability streaks in oil field treatments.Type: GrantFiled: March 11, 1985Date of Patent: January 13, 1987Assignee: Phillips Petroleum CompanyInventors: Paul S. Hudson, Tod K. Shioyama