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| Number | Title | Issue Date |
| 5728366 | Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with monovalent organic anions There is provided a method for making monovalent organic anion-intercalated hydrotalcite-like materials by first reacting a magnesium-containing powder and a transition alumina powder in a carboxylic acid-free, aqueous suspension to form a meixnerite inte... | 03/17/1998 |
| 5728367 | Process for fabricating a lithiated transition metal oxide A method for preparing a lithiated transition metal oxide electrochemical charge storage material for use in an electrochemical cell. The cell (10) includes a cathode (20), an anode (30) and an electrolyte (40) disposed therebetween. The method involves t... | 03/17/1998 |
| 5728363 | Two powder synthesis of hydrotalcite and hydrotalcite-like compounds There is provided an improved method for making synthetic hydrotalcite by first reacting powdered magnesium oxide with a high surface area, transition alumina in a solution or suspension to form a meixnerite-like intermediate. This intermediate is then co... | 03/17/1998 |
| 5728364 | Two powder synthesis of hydrotalcite and hydrotalcite like compounds There is provided an improved method for making synthetic hydrotalcite by first reacting a divalent metal compound with a trivalent metal oxide powder in a carboxylic acid-free, aqueous solution or suspension to form an intermediate. This intermediate is ... | 03/17/1998 |
| 5728365 | Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with divalent inorganic anions There is provided a method for making a divalent inorganic anion-intercalated hydrotalcite-like material by first reacting a magnesium-containing powder and a transition alumina powder in a carboxylic acid-free aqueous suspension to form a meixnerite inte... | 03/17/1998 |
| 5720883 | Bismuth lead compound A bismuth lead compound of the formula BiPbO2 (NO3).... | 02/24/1998 |
| 5626827 | Basic aluminum antiperspirant active materials having enhanced activity, antiperspirant active compositions containing such materials, and methods for preparation of such materials and compositions Disclosed are basic aluminum antiperspirant materials having univalent complex oxoanions (e.g., nitrate); methods of making such materials; antiperspirant compositions containing such basic aluminum materials, another antiperspirant active material (e.g.,... | 05/06/1997 |
| 5578286 | Two powder synthesis of hydrotalcite-like compounds with divalent or polyvalent organic anions There is provided a method for making a divalent or polyvalent organic anion-intercalated hydrotalcite-like materials by first reacting a magnesium-containing powder and a transition alumina powder in an aqueous suspension to form a meixnerite intermediat... | 11/26/1996 |
| 5437852 | Water-soluble pre-ceramic polymers and methods of their production A method of making water soluble pre-ceramic polymers includes heating hydrated metal salts above their melting points. A flow of air drives off water and most of the ligands. Polymerization occurs in the melt and the remaining side groups make the polyme... | 08/01/1995 |
| 5411725 | Process for the continuous conversion of one hydroxylamine salt to another hydroxylamine salt The present invention relates to a process for the continuous conversion of one hydroxylamine salt to another hydroxylamine salt, said process involving a countercurrent liquid-liquid extraction followed by a countercurrent liquid-liquid re-extraction. Ch... | 05/02/1995 |
| 5364500 | Process for removing nitrites from a silver nitrate solution A silver nitrate feed solution containing nitrites and nitric acid is treated to produce a low-nitrite silver nitrate product solution. In the process, the temperature of the feed solution is established in the range of from about 80° C. to about the boi... | 11/15/1994 |
| 5364418 | Process for compacting silver nitrate A process is disclosed for forming compacted silver nitrate bodies. A feed silver nitrate solution is introduced into an evaporative crystallizer (10). Steam is provided to a steam jacket (30) to heat the solution in the crystallizer (10) and form a slurr... | 11/15/1994 |
| 5360602 | Silver nitrate produced by a continuous evaporative crystallization process Silver nitrate crystals comprising a substantially non-platelet crystal morphology are disclosed. The non-platelet silver nitrate crystals have an aspect ratio in the range of from about 1:2:3 to about 1:1:1. FIGS. 4 and 5.... | 11/01/1994 |
| 5348720 | Basic aluminum antiperspirant active material having enhanced activity, antiperspirant active composition containing such material, and methods for preparation of such material and composition Disclosed is a basic aluminum material having enhanced antiperspirant activity, the material having the empirical formula Al2 (OH)6-a Xa, where 0.5ࣘaࣘ5.0, and X is a univalent complex oxoanion of nitrogen, chlorine and... | 09/20/1994 |
| 5326432 | Method of producing magnesium chloride hexahydrate and other alkaline earth salts A low-cost, fluidized-bed drying process for the production of solidified alkaline earth salts is provided which is especially useful for the production of MgCl2.6H.sub.2 O from a starting brine nominally containing MgCl2.12H.sub.2 O... | 07/05/1994 |
| 5316737 | Process for removing Nox and Sox from exhaust gas Exhaust gases containing oxides of nitrogen and sulfur from a fired process heater, a fossil fuel fired boiler, or a chemical process are diverted from a stack prior to admission to the atmosphere through a duct system containing heat exchangers that redu... | 05/31/1994 |
| 5310533 | Production of copper compounds A method of producing copper compounds involves contacting metallic copper with oxygen or an oxygen-containing gas, with an aqueous solution consisting essentially of water in solution in which is a soluble ammonium salt NH4 X, where X is the a... | 05/10/1994 |
| 5196178 | Method of producing dustfree silver nitrate In order to produce dustfree silver nitrate which can be readily dosed, silver nitrate is atomized in a molten state. A purity of the silver nitrate of greater than 99%, a pH of 2 to 6, and the exclusion of light during the atomizing are necessary.... | 03/23/1993 |
| 5192355 | Manufacturing and using nitrogen fertilizer solutions on a farm To make and use nitrogeneous fertilizer on a farm, nitrogen oxides are prepared in a continuous process from air or from ammonia in a reactor, with the ammonia either being transported to the farm or local site in a farming area or being prepared on the s... | 03/09/1993 |
| 5171559 | Process for purifying silver nitrate solution using activated alumina A process for removing heavy metals from a silver nitrate solution is disclosed. The process comprises the step of bringing said silver nitrate solution into contact with activated alumina having a surface acidity of at least 8 and an average pore diamete... | 12/15/1992 |
| 5112783 | Conductive copper oxide ceramics and process for producing same Cubic conductive copper oxide ceramics which are represented by the following formula I: (Mx Cuy)7 Oz Aw I wherein M represents at least one element selected from the group consisting of ... | 05/12/1992 |
| 5110578 | Continuous production of potassium nitrate via ion exchange Potassium nitrate is produced by contacting nitric acid with a potassium loaded strong cationic exchange resin. In a preferred embodiment, a solution of potassium nitrate and dilute nitric acid is produced in a continuous liquid solid contacting apparatus... | 05/05/1992 |
| 5098461 | Phosphatic and nitrogen fertilizers via HNO3 processing A process for producing high-analysis dicalcium phosphate containing phosphatic fertilizers and by-product calcium nitrate. It comprises reacting phosphate rock with nitric acid, followed by pyrolysis of the resulting acidulate to effect liberation of app... | 03/24/1992 |
| 5084258 | Lin flue gas SOx /NOx removal process and its by-product utilization Sulfur dioxide (SO2) can be oxidized to rapidly sulfur trioxide (SO3) in a high temperature environment. It has been found that the SO2 oxidation rate can be impeded by a high rate of temperature reduction in a dynamic con... | 01/28/1992 |
| 5039502 | Process for the preparation of metal nitrates A process for the preparation of aqueous metal nitrate solutions by dissolving the metal in nitric acid. The formation of ammonium nitrate is suppressed and the dissolution process is accelerated by adding nitrous acid or a substance which forms nitrous a... | 08/13/1991 |
| 5035834 | Novel cerium (IV) compounds Novel cerium (IV) compounds having the Formula (I): Ce(OH)x (NO3)y, pCeO2.nH.sub.2 O (I) can be directly dispersed in water to produce unique colloidal dispersions thereof.... | 07/30/1991 |
| 5021192 | Colloidal dispersions of cerium (IV) compound Highly concentrated, aqueous colloidal dispersions of a cerium (IV) compound, adapted for the impregnation of catalyst supports, are prepared by reacting an aqueous solution of a cerium (IV) salt with a base, to precipitate a certain cerium hydroxynitrate... | 06/04/1991 |
| 5015456 | Removal of nitrate and/or organic pollutants from effluents A continuous process for the removal of at least one of nitrate and organic contaminants from an aqueous effluent, which process comprises subjecting said effluent to extractive liquid ion-exchange with a long-chain alkylamine dissolved in an organic solv... | 05/14/1991 |
| 5012019 | Process for purifying aromatic nitration products The present invention relates to a process for purifying an aromatic nitration product mixture comprising a nitrated aromatic compound, water, and nitric or sulfuric acid which comprises without regard to sequence: (a) removing at least a portion of said ... | 04/30/1991 |
| 5009792 | Method for clarifying aqueous salt solutions The present invention relates to a method for clarifying aqueous salt solutions containing inorganic insolubles and possibly also organic components. Air is introduced into a recirculating system for the aqueous solution, pressurized and then released, th... | 04/23/1991 |
| 5000928 | Preparation of ultra-pure silver nitrate Ultra-pure silver nitrate is prepared from crude silver by a process comprising the steps of dissolving the crude silver in nitric acid to form a crude silver nitrate solution; adding an alkaline agent, such as sodium hydroxide, to the crude silver nitrat... | 03/19/1991 |
| 4983372 | Process for preparing halide-free rhodium nitrate Halide-free rhodium nitrate is produced by a process which comprises quantitative reaction of metallic rhodium with hydrochloric acid, gaseous chloride and gaseous hydrogen chloride to produce hexachlororhodic acid, followed by the quantitative reaction o... | 01/08/1991 |
| 4968394 | Method of reducing excess nitric acid in aqueous hydroxylamine nitrate solutions A process for reducing excess nitric acid in an aqueous hydroxylamine nitrate solution. The process is conducted by reacting the aqueous hydroxylamine nitrate solution with a basic neutralizing agent such as nitric oxide, hydroxylamine vapor or a mixture ... | 11/06/1990 |
| 4952379 | Method for purifying calcium nitrate melt/solution which is separated from the mixture obtained by the solution of rock phosphate with nitric acid The present invention relates to a method for purifying calcium nitrate melt or solution separated from the mixture obtained by dissolution of rock phosphate with nitric acid. The melt contains fluorine and phosphorus as main contaminants. The mol-ratio p... | 08/28/1990 |
| 4844879 | Process for preparing rhodium nitrate solution A process of the present invention comprises dissolving rhodium black in sulfuric acid under heating, making the pH of the said sulfuric acid solution neutral or basic by adding an alkaline solution to the said sulfuric acid solution to precipitate rhodiu... | 07/04/1989 |
| 4834952 | Purification of barium values Purified barium salts essentially devoid of strontium impurities, e.g., highly pure barium carbonate, are produced by liquid/liquid extracting an aqueous solution of impure barium values with an organic solvent medium which comprises at least one water-in... | 05/30/1989 |
| 4824600 | Preparation of a suspension in preparation of powder making A highly concentrated silver salt suspension and tin salt suspension from which a silver and tin oxide powder can be made under utilization of the reaction spray method is made by adding in small steps a tin II salt solution into a small volume of concent... | 04/25/1989 |
| 4808393 | Process for manufacture of ferric nitrate A novel process for the manufacture of an aqueous ferric nitrate solution is provided. This process overcomes the passivation problem associated with the reaction of nitric acid and iron. The process is effected at a critical reaction temperature less tha... | 02/28/1989 |
| 4776930 | Process for the preparation of potassium nitrate A process is disclosed for the preparation of potassium nitrate by means of the reaction of nitric acid with potassium carbonate, wherein potassium carbonate is obtained by means of an electrochemical process.... | 10/11/1988 |
| 4735629 | Method for producing a double hydroxide active material A positive electrode for alkaline storage cells is disclosed. The active material for the positive electrode is a double hydroxide of the formula wherein x is in the range 0.05ࣘxࣘ0.4, M2+ is an oxidizable and reducible, and Xn- is at ... | 04/05/1988 |
