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| Number | Title | Issue Date |
| 7994370 | Method for depletion of sulfur and/or compounds containing sulfur from a biochemically produced organic compound Method of reducing the concentration of sulfur and/or a sulfur-containing compound in a biochemically prepared organic compound by bringing the respective organic compound into contact with an adsorbent, wherein the adsorbent is a clay doped with silver and/or a sil... | 08/09/2011 |
| 7514588 | Purification of organic solvents The present invention is directed to processes for producing a high purity organic solvent from a crude organic solvent comprising providing a stream of crude organic solvent comprising a first amount of at least one impurity and adsorbing at least one impurity cont... | 04/07/2009 |
| 7504546 | Apparatus and method for the removal of water from ethanol An apparatus and method for drying ethanol includes a first reaction chamber for carrying out the removal of water from wet ethanol, a feed inlet for introducing the wet ethanol into the reaction chamber, a product outlet for removing dry ethanol from the reaction c... | 03/17/2009 |
| 7462749 | Process for the extraction of ethanol from a water solution A process for the extraction of ethanol from a solution by bringing the solution into contact with a bed of salt consisting of Mg3(PO4)2, whereby the salt adsorbs ethanol from the solution, removing the solution from the salt bed, he... | 12/09/2008 |
| 7399892 | Process for dewatering ethanol A process for preparing low-water ethanol from at least two streams of relatively water-rich ethanol that have a different water content by dewatering at membranes. The low-water ethanol can be used to prepare ethyl tert-butyl ether (ETBE). ... | 07/15/2008 |
| 7365219 | Solid phase extraction method for obtaining high-purity unsaturated compounds or derivatives of said compounds The invention relates to a novel extraction method for obtaining at least one unsaturated, optionally derivatized compound, from mixtures of said compounds with other less saturated constituents, e.g. for obtaining polyunsaturated fatty acids or the derivatives ther... | 04/29/2008 |
| 7332092 | Method of separating E and Z isomers of an alkene alcohol and derivatives thereof E and Z isomers of alkene alcohols and/or alkene alcohol derivatives are separated by substantially continuously contacting an ion exchange medium which is ion exchanged with silver and/or copper ions with the feed stream comprising the E and Z isomers of at least o... | 02/19/2008 |
| 7253305 | Tertiary alkyl acetate preparation Esters are formed by reaction of acetic anhydride with tertiary butyl or tertiary anyl alcohol in the presence of tertiary amine catalyst such as DMAP or NMI catalyst and acetic acid in amount sufficient to present catalyst degradation; in preferred practice a mixed... | 08/07/2007 |
| 7211703 | Method of separating E and Z isomers of an alkene alcohol and derivatives thereof E and Z isomers of alkene alcohols and/or alkene alcohol derivatives are separated by substantially continuously contacting an ion exchange medium which is ion exchanged with silver and/or copper ions with the feed stream comprising the E and Z isomers of at least o... | 05/01/2007 |
| 7022885 | Purification on methyl tertiary butyl ether The present invention relates to purification of an MTBE process stream by contact in the liquid phase with a large pore zeolite such as 13X or Zeolite Y. ... | 04/04/2006 |
| 7022813 | Process for purifying and reusing solvent used to remove extractables A process for treating biomedical devices, especially contact lenses, involves contacting polymeric devices containing extractables with a solvent that dissolves and thereby removes the extractables from the device, treating the solvent to remove extractables from t... | 04/04/2006 |
| 7018614 | Stabilization of radiopharmaceuticals labeled with 18-F An 18F isotope-labeled FDG radiopharmaceutical is stabilized against degradation in radiochemical purity due to radiolysis using selected amounts of ethyl alcohol that depend on the activity concentration of the 18F with due regard to limits se... | 03/28/2006 |
| 6906229 | Process for hydrolyzing di-isopropyl ether to isopropyl alcohol by catalytic distillation using a solid acid catalyst The invention relates to the production of isopropyl alcohol from di-isopropyl ether by catalytic distillation. The process solves, in particular, problems associated with the Sulfuric Acid Process. ... | 06/14/2005 |
| 6770790 | Purification of tertiary butyl alcohol The invention is a method to purify tertiary butyl alcohol by contact with at least two solid adsorbents comprising aluminum oxide and a large pore zeolite such as zeolite X. The purification method successfully improves product quality and reduces the amount of imp... | 08/03/2004 |
| 6596909 | Adsorption of aldehyde with adsorbent containing zeolite The present invention provides the adsorbent which adsorbs the aldehyde efficiently for a long period. The present invention also includes an adsorption device, an article and a method using the same. The adsorbent of the invention comprises a zeolite, wh... | 07/22/2003 |
| 6563010 | Adsorbent bed loading and regeneration The process for removing impurities from a liquid by contact with a solid adsorbent using parallel contact adsorbent beds such that when one bed is contacting the liquid the parallel bed is being regenerated by contact with heated inert gas, wherein durin... | 05/13/2003 |
| 6417412 | Purification of tertiary butyl alcohol The present invention relates to purification of a tertiary butyl alcohol process stream by contact in the liquid phase with a large pore zeolite such as 13X in the sodium form.... | 07/09/2002 |
| 5773634 | Tertiary butyl alcohol absorption process for recovering propylene and isobutane The liquid and gaseous products formed by reacting oxygen with isobutane in an oxidation reactor are separately processed; the liquid reaction product being charged to a distillation zone and separated into a lower boiling isobutane fraction and a higher ... | 06/30/1998 |
| 5571387 | Continuous single vessel distillation and adsorption process The present invention is a process for separating at least a first component from a second component of at least a first stream within a single vessel having at least one distillation zone and an adsorption zone. The invention may be applied to separates ... | 11/05/1996 |
| 5455368 | Process for separating off methanol from a mixture of dimethyl carbonate and methanol Methanol can be substantially removed from dimethyl carbonate (DMC)/methanol mixtures by absorption on ion exchange resins. The enriched DMC is obtained as filtrate. The absorption is carried out at from -50° C. to +100° C. and 0.1-10 bar.... | 10/03/1995 |
| 5256173 | Process for removing light alcohols from gas streams The light alcohol component of exhaust gases from such commercial operations as paint spraying booths and printing presses is found to be selectively adsorbed, even under high relative humidity conditions, to a surprisingly high degree using bonded high-s... | 10/26/1993 |
| 5196603 | Process for decomposing peroxide impurities in a teritary butyl alcohol feedstock using an iron (II) compound This invention relates to a process for removing impurities contained in a teritary butyl alcohol feedstock. The process involves contacting the feedstock with an iron (II) compound such as iron (II) chloride, under an inert atmosphere at elevated pressur... | 03/23/1993 |
| 5151190 | Method for separating a liquid mixture A method for separating water by pervaporation from a liquid mixture comprising isopropanol and water, which comprises (a) heating the liquid mixture, then supplying the heated mixture to a pervaporation membrane module unit using a polyimide-type separat... | 09/29/1992 |
| 5132020 | Sorption of alcohols using zeolite beta A process for the sorption of alcohols by using zeolite Beta as a sorbent. The process is useful for separating alcohols, such as isopropanol and phenol, from an aqueous solution. the process is also useful for separating alcohols from an alcohol-containi... | 07/21/1992 |
| 5124492 | Process for decomposing peroxide impurities in a tertiary butyl alcohol feedstock using an iron (II) compound This invention relates to a process for removing peroxide impurities contained in a tertiary butyl alcohol feedstock. The process involves contacting the feedstock with an iron (II) compound such as iron (II) chloride, under an inert atmosphere at elevate... | 06/23/1992 |
| 5082980 | Process and apparatus for synthesizing oxygen-15 labelled butanol for positron emission tomography The present invention is directed to a process and apparatus for synthetically producing 15 O-labeled butanol for position emission tomography. A procedure and apparatus have been developed for the routine rapid and sequential synthesis of oxyg... | 01/21/1992 |
| 5030775 | Process for preparing motor fuel grade alcohol A process for preparing motor fuel grade alcohol wherein an ethanol fermentation reactor effluent is distilled to produce an overhead product comprising 10 to about 40 mole percent ethanol and a bottom product comprising the non-alcoholic components. The ... | 07/09/1991 |
| 4760204 | Process for deodorizing isopropyl alcohol A process for deodorizing technical-grade isopropyl alcohol by contacting the alcohol with a strongly acidic cation exchange resin loaded with silver in ionic form is provided.... | 07/26/1988 |
| 4716218 | Grain extraction milling A process for the production of grain oil, dehydrated alcohol, grain protein and starch, is disclosed. The invention comprises the steps of (a) drying cracked grain, (b) leaching the dried grain with an ethanol solution of 90 to 100% w/v ethanol and recov... | 12/29/1987 |
| 4709106 | Process for deodorizing isopropyl alcohol A process for deodorizing technical-grade isopropyl alcohol by contacting the alcohol with a strongly acidic cation exchange resin loaded with palladium in ionic form is provided.... | 11/24/1987 |
| 4696720 | Removal of water from aqueous alcohol mixtures The present invention involves a process for removing water from mixtures of alcohols and water by contacting such a mixture with an ion exchange resin of either the cation or anion type. Prior to use for alcohol dehydration, the ion exchange resin itself... | 09/29/1987 |
| 4647406 | 2-ethyl-2-prenyl-3-hexenol its preparation and use as a fragrant The invention relates to 2-ethyl-2-prenyl-3-hexenol, its preparation by the reduction of 2-ethyl-2-prenyl-3-hexenal, and its use as an aromatic substance by itself or as an ingredient in cosmetic compositions.... | 03/03/1987 |
| 4612405 | Continuous sorption process A process providing continuous or quasi-continuous sorption uses at least three fixed bed sorbent zones connectable in series by pipes, for the passage of a liquid phase containing a component to be sorbed. The approach of saturation of one or more of the... | 09/16/1986 |
| 4588847 | Process for separation of ethylene glycol and propylene glycol on selected zeolites A process for liquid-phase separation of ethylene glycol from mixtures containing propylene glycol by selective adsorption on at least one aluminosilicate zeolite selected from the group consisting of X zeolite, Y zeolite, and A zeolite is disclosed.... | 05/13/1986 |
| 4543432 | Separation of isopropyl alcohol from tertiary butyl alcohol by selective adsorption The present invention provides a novel method for removing minor amounts of isopropyl alcohol from a process stream primarily comprising tertiary butyl alcohol. The separation of isopropyl alcohol from tertiary butyl alcohol is accomplished by providing a... | 09/24/1985 |
| 4504688 | Process for the preparation of pure alkyl tert-alkyl ethers and hydrocarbon raffinates which are largely free from isoolefins and from alkanols A process for the preparation of pure alkyl tertiary alkyl ethers and hydrocarbon raffinates which are substantially free from tertiary olefins and alkanols. An alkanol and a hydrocarbon mixture containing at least one tertiary olefin are contacted with t... | 03/12/1985 |
| 4492808 | Method for separating ethanol from an ethanol containing solution A process is disclosed for the separation of ethanol from an ethanol containing water solution, wherein the ethanol containing solution is extracted by means of a solvent which is in the liquid or supercritical state, the ethanol containing solvent phase ... | 01/08/1985 |
| 4487614 | Adsorption separation cycle In a fixed-bed vapor phase adsorption cycle for bulk separations wherein the heat front generated by the exothermic heat of adsorption is maintained in the bed either in or behind the mass transfer zone, and is subsequently utilized in the purge desorptio... | 12/11/1984 |
| 4486353 | Process of extracting vegetable oil and fat A process of extracting vegetable oil and fat from an oleaginous raw material which comprises the steps of obtaining flakes having a moisture content of from 0.7 to 10 weight % from an oleaginous raw material; contacting the flakes with an ethanol solutio... | 12/04/1984 |
| 4482768 | Separation of alkanols from aqueous reaction solutions Purified isopropanol is obtained from a crude reaction mixture by removing high boiling oils with activated carbon, extraction with a high boiling solvent and distillation with energy saving use of distillation vapors to heat successive distillation steps... | 11/13/1984 |
