| Patent application number | Description | Published |
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| 20100012898 | METHOD FOR CONTROLLING THE SIZE OF RARE-EARTH-DOPED FLUORIDE NANOPARTICLES - A method wherein an aqueous solution of a fluoride, an aqueous solution of a Group 2 or Group 3 metal salt, and an aqueous solution of a rare-earth metal dopant are combined to form a precipitate of a rare-earth doped Group 2 or Group 3 metal fluoride, and wherein increasing the concentration of the rare-earth dopant cation increases the resulting particle size, and wherein decreasing the concentration of the rare-earth dopant cation decreases the particle size. | 01-21-2010 |
| 20100019200 | METHOD FOR PREPARING RARE-EARTH-DOPED FLUORIDE NANOPARTICLES OF CONTROLLED SIZE - A method wherein an aqueous solution of a fluoride, an aqueous solution of a Group 2 or Group 3 metal salt, and an aqueous solution of a rare-earth metal dopant are combined in a plurality of continuous feed streams to form a series of precipitates of a rare-earth doped Group 2 or Group 3 metal fluoride, and wherein the member of the series differ by the concentration of the associated rare-earth dopant cation in the feed stream, and wherein the series so prepared defines the threshold concentration range above which operation of the process results in a minimization of the particle size variability caused by small perturbations in the concentration of the rare-earth dopant. | 01-28-2010 |
| 20110024683 | METHOD FOR CONTROLLING THE SIZE OF RARE-EARTH-DOPED FLUORIDE NANOPARTICLES - II - For a continuous process for preparing rare-earth doped Group 2 or Group 3 metal fluoride nanoparticles comprising a confluence of feed streams of reagents, a method is provided for controlling particle size by adjustment in the flow rate of the streams. | 02-03-2011 |
| Patent application number | Description | Published |
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| 20080312121 | Liquid Surface Active Compositions - A liquid surface active composition which is comprised of an alcohol ethoxysulfate, an alcohol ethoxylate, c) an additive which is triethanolamine or a diol comprised of carbon, oxygen, and hydrogen atoms and which has a molecular weight of 75 to 225, and water. | 12-18-2008 |
| 20090203557 | METHOD AND COMPOSITION FOR ENHANCED HYDROCARBONS RECOVERY - The present invention provides a method of treating a hydrocarbon containing formation comprising (a) providing a hydrocarbon recovery composition to at least a portion of the hydrocarbon containing formation, wherein the composition comprises one or more internal olefin sulfonates having 17 or more carbon atoms, (b) adding water and/or brine from the hydrocarbon formation to the composition, (c) adding a solubilizer which comprises an ethoxylated alcohol wherein the alcohol before ethoxylation had an average molecular weight of at least about 220 and (d) allowing the composition to interact with hydrocarbons in the hydrocarbon containing formation. The solubilizer may comprise less than about 0.1 wt %, preferably from about 0.02 to about 0.05 wt %, of the total composition and it may have from about 5 to about 9 moles of ethylene oxide per mole of alcohol. | 08-13-2009 |
| 20090203558 | METHOD AND COMPOSITION FOR ENHANCED HYDROCARBONS RECOVERY - A method of treating a hydrocarbon containing formation is described. The method includes (a) providing a hydrocarbon recovery composition to at least a portion of the hydrocarbon containing formation, wherein (i) when the salinity of the brine is from about 2 wt % to about 4 wt %, the composition comprises a blend of a C | 08-13-2009 |
| 20110092406 | PROCESS FOR MAKING A SECONDARY ALCOHOL CLEANING PRODUCT - A process for making a useful cleaning product from an alkoxylate of a secondary alcohol which comprises: (a) partially sulfating a secondary alcohol alkoxylate with sulfur trioxide in a falling film sulfation reactor at a molar ratio of sulfur trioxide to secondary alcohol alkoxylate of less than 0.9 to produce a mixture comprising a sulfuric acid ester of the secondary alcohol alkoxylate and secondary alcohol alkoxylate which may comprise at least 50 percent by weight of the sulfuric acid ester of the secondary alcohol alkoxylate, (b) combining the mixture with a neutralizing agent in an amount sufficient to neutralize the sulfuric acid ester, and (c) optionally adding water to yield a useful cleaning product. | 04-21-2011 |
