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| Number | Title | Issue Date |
| 7369221 | Portable refractometer A portable refractometer is provided that includes a lens barrel having a lens barrel axis. A prism is secured to one end of the lens barrel, the prism having an entry face that provides a boundary surface between the prism and a substance to be measured. A tube sha... | 05/06/2008 |
| 7285260 | Synthesis method for carbon material based on LiMM'(XO) Method of synthesis for a material made of particles having a core and a coating and/or being connected to each other by carbon cross-linking, the core of these particles containing at least one compound of formula LixM1−yM′y(XO | 10/23/2007 |
| 7247286 | Process for production of sodium borohydride from sodium aluminum hydride with recycle of byproducts A process for production of sodium borohydride. The process comprises the steps of: (a) combining a boric acid ester, B(OR)3 and sodium aluminum hydride to produce sodium borohydride and Al(OR)3; and (b) combining Al(OR)3 and sulfuri... | 07/24/2007 |
| 7211235 | Method for producing hydrotalcites A method is described for the manufacture of hydrotalcites by using at least one compound of a bivalent metal (Component A) and at least one compound of a trivalent metal (Component B), wherein at least one of these components is not used in the form of a solution, ... | 05/01/2007 |
| 7090809 | Production of aluminum compounds and silica from ores A method for the production of inorganic aluminum substances and amorphous silica from aluminum oxide containing ores, comprising: (a) leaching of said ores with fluorosilicic acid to obtain aluminum fluosilicate solution; (b) filtering said leached solution from in... | 08/15/2006 |
| 7067099 | Method for preparing aluminum sulfate, aluminum sulfate, method for improving yield of aluminum sulfate, and use of nitric acid A method for preparing aluminum sulfate which comprises subjecting sulfuric acid and aluminum hydroxide to reaction, wherein the reaction is advanced in the presence of at least one member selected from the group consisting of nitric acid and a peroxide. An industri... | 06/27/2006 |
| 6548037 | Aluminium polychlorosulphates, process for their preparation and use thereof Aluminum polychlorosulphates having the general formula (I) Al(OH)l Clm (SO4)n Mp (I) where M represents an alkali metal l, m, n, p represent the number of moles per mole of aluminum, so that 1.74ࣘlࣘ2.25, 0.01à£... | 04/15/2003 |
| 6423133 | Aqueous suspension based on alkaline aluminium polysulphate, preparation method and use in the field of building materials The present invention relates to an aqueous suspension comprising: A) silica and/or alumina particles, and B) a compound of overall formula (I): Al(OH)a (SO4)b (SiOx)c (Y)d (I) with: a between 0.1 and 2... | 07/23/2002 |
| 6306494 | Fine particulate synthetic chalcoalumite compounds, process for their production, and heat insulator and agricultural film containing the fine particulate synthetic chalcoalumite compounds Novel, fine particulate synthetic chalcoalumite, process for preparation thereof, and a heat insulating agent and agricultural film containing said fine, particulate synthetic chalcoalumite. The above objects are met by synthetic chalcoalumite represented... | 10/23/2001 |
| 6214302 | Production of aluminum sulfate from coal ash The object of this invention is to provide a new low-cost method of production of the Aluminum Sulfate (Alum, Type 1, Class 1 and 2) from any alumina contained raw material, which comprises of selective precipitation of ferric ions from aluminum sulfate s... | 04/10/2001 |
| 5997838 | Polyaluminum chlorides and polyaluminum chlorosulfates methods and compositions The present invention is directed to a process for the production of polyaluminum chlorides and polyaluminum chlorosulfates useful as coagulants in water treatment. In addition, the invention is directed to the products made by the disclosed processes.... | 12/07/1999 |
| 5985234 | Polyaluminum chlorides and polyaluminum chlorosulfates methods and compositions The present invention is directed to a process for the production of polyaluminum chlorides and polyaluminum chlorosulfates useful as coagulants in water treatment. In addition, the invention is directed to the products made by the disclosed processes.... | 11/16/1999 |
| 5980856 | Synthetic chalcoalumite-type compounds and processes for producing the same This invention relates to synthetic chalcoalumite-type compounds represented by formula (1) below: M2+a-x/2 Lix1+ Al43+ (OH)b (An-)c.mH.sub.2 O ... | 11/09/1999 |
| 5942199 | Method for the treatment of impure aluminium oxide The invention relates to a method for the treatment of an impure aluminium oxide so that the organic impurities present therein it are converted into an insoluble and easily separable substance. According to the invention, aluminium oxide which contains o... | 08/24/1999 |
| 5938970 | Polynucleate metal hydroxide compounds and method for their preparation Polynucleate metal hydroxide anionic compounds and method for their production. The compounds have the formula: Ma Nb (OH)c Xd Ye Zf.(H2 O)g wherein M is a tri- or more valent m... | 08/17/1999 |
| 5904761 | Process for preparing a pigment for a coated paper The present invention provides a method for preparing a needle-shaped pigment with a particle size of 0.3&#b1;0.1 μm, which has uniform particle distribution, higher thixotropy, an excellent gloss, and good absorption of printing ink, by continuous addit... | 05/18/1999 |
| 5879651 | Process for the preparation of basic polyaluminum chlorosulphates and applications thereof The present invention relates to a process for the preparation of basic polyaluminium chlorosulphates. This process consists, after basification, in carrying out cooking at a temperature between 60° C. and 95° C. such that the cooking time is proportion... | 03/09/1999 |
| 5871571 | Inks and UV-opaque protectorants comprising basic sodium and/or sodium/potassium aluminum sulfates and process for making such commercial products A process for making ink which begins with a leach liquor of Al2 (SO4)3 +K2 SO4 +Fe2 SO4 and other sulfates that are introduced to a surface-cooled crystallizer that drops the Al... | 02/16/1999 |
| 5861133 | Synthetic chalcoalumite compounds and process for producing thereof A synthetic chalcoalumite compound represented by the formula (1) (Zna-x2+ Mx2+)Al43+ (OH)b (An-)c.mH.sub.2 O (1) wherein M2+... | 01/19/1999 |
| 5783163 | Process for making basic sodium and/or potassium aluminum sulphates and for making paper with such A process in which a leach liquor of Al2 (SO4)3 +K2 SO4 +Fe2 SO4 and other sulphates is introduced to a surface-cooled crystallizer that drops the Al2 (SO4)... | 07/21/1998 |
| 5783280 | Rigid thermal insulation An insulation material comprising the double salt of aluminum potassium sulphate and method of producing such. Aluminum sulphate materials and potassium sulphate materials are combined to form aluminum potassium sulphate which is then dehydrated to remove... | 07/21/1998 |
| 5776424 | Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with monovalen inorganic anions There is provided a method for making a monovalent 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 ... | 07/07/1998 |
| 5730951 | Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with polyvalent inorganic anions There is provided a method for making a polyvalent 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 ... | 03/24/1998 |
| 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 |
| 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 |
| 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 |
| 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 |
| 5603912 | Basic aluminum hydroxychlorosulfate process and product therefrom An improved method for preparing a basic aluminum hyrdoxy-chlorosulfate is disclosed comprising reacting a basic aluminum chloride with a sulfate source, i.e. H2 SO4 or aluminum sulfate, and modifying the reaction product by the addi... | 02/18/1997 |
| 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 |
| 5549833 | Method of decomposing hydrogen peroxide The improved method achieves effective and economical decomposition of hydrogen peroxide and may be used in recycling hydrogen peroxide-containing spent sulfuric acid that has been used in wafer cleaning and other operations in the process of semiconducto... | 08/27/1996 |
| 5518706 | Basic aluminum chlorosulfate flocculant A novel basic aluminum chlorosulfate, well adopted for the improved purification of aqueous media, has the formula: Aln (OH)m (SO4)k Cl3n-m-2k and characteristic basicity, Al/Cl ratio, molecular weight and hydr... | 05/21/1996 |
| 5456739 | Process for reclaiming aluminum from waste paper and packaging products Aluminum is recovered from organic waste paper and packaging material containing aluminum foil by heating the waste material in a kiln or other such device to decompose the organic constituents in the waste material, preferably by pyrolysis, producing hot... | 10/10/1995 |
| 5356602 | Process for preparing aluminum sulfate Aluminum sulfate that is less colored is prepared by adjusting the concentration of hydrogen peroxide in sulfuric acid to 0.1% by weight or less, and contacting the sulfuric acid with an alumina-containing compound.... | 10/18/1994 |
| 5348721 | Polyaluminumchlorosulfates and preparation and uses thereof The invention relates to high basicity polyaluminumchlorosulfates and their preparation process, said polyaluminumchlorosulfates being useful in the treatment of drinking water, aqueous effluents, and in the papermaking industry and having the formula: Al... | 09/20/1994 |
| 5346643 | Polynuclear complex salt waste water clarificants and their preparation A wastewater clarificant very excellent in the powers for removing BOD, COD and SS is provided. The clarificant comprises an aqueous solution containing a polynuclear complex salt that is obtained by subjecting to isochoric heating an aqueous solution con... | 09/13/1994 |
| 5296213 | Polymeric aluminum silicate-sulphate and process for producing same The invention relates to basic polynucleate aluminum hydroxy silicate sulfate compounds and to a process for their preparation. The process involves first mixing an alkali metal silicate and an alkali metal aluminate solution and optionally a third compon... | 03/22/1994 |
| 5258168 | Production of alunites Disclosed is a method for preparing high purity alunite. In the method, a material selected from the group consisting of sodium sulfate, sodium bisulfate, ammonium sulfate, ammonium bisulfate, potassium sulfate and potassium bisulfate is provided and reac... | 11/02/1993 |
| 5246686 | Basic aluminum chlorosulfate flocculating agents Novel basic aluminum chlorosulfate solutions, having a basicity ranging from 45% to 70% and wherein more than 80% of the SO42- values are complexed, prepared, e.g., by reacting calcium carbonate with a chlorosulfuric solution of alum... | 09/21/1993 |
| 5149400 | Polymeric basic aluminum silicate-sulphate A polynucleate aluminum hydroxy silicate-sulphate compound (PASS) having the following average composition: AlA (OH)B (SO4)C (SiOX)D (H2 O)E wherein A is 1.0; B ranges from 0.75... | 09/22/1992 |
| 5124139 | Method for preparing basic aluminum chlorosulfate A process for preparing basic aluminum chlorosulfate comprising: 1) forming a reaction mixture in an aqueous medium of aluminum chloride and aluminum sulfate in a molar ratio of aluminum chloride: aluminum sulfate ranging from about 0.75:1 to about 1:3 to 1 fo... | 06/23/1992 |
