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| Number | Title | Issue Date |
| 8129573 | Method for purifying fermentation alcohol The present invention relates to a method for purifying an aqueous solution of fermentation alcohol to give anhydrous alcohol, wherein a mash column is controlled such a manner that an alcohol concentration of an alcohol/water mixed vapor distilled from a mash colum... | 03/06/2012 |
| 8026399 | Fractional condensation processes, apparatuses and systems The present invention provides fractional condensation apparatuses, systems and methods that can recover volatile products from highly diluted liquid and vapor feed mixtures with high purity and recovery yield, both in batch and continuous distillation, while being ... | 09/27/2011 |
| 7834225 | Method and device for separation of liquid mixtures without thermal distillation A method and device is presented for separating liquid mixtures using ultrasonic atomization and without subjecting the mixture to heat or thermal distillation. The process of ultrasonic separation does not involve liquid heating and saves up to 75% of the energy re... | 11/16/2010 |
| 7700814 | Manufacture of alcohols Acetals are formed from a mixture comprising alcohols and aldehydes and the product is distilled to yield purified alcohols and/or acetals and/or unsaturated ethers. ... | 04/20/2010 |
| 7404944 | Sulfate removal from ethanol A process for removing sulfates such as hydrogen sulfate, sodium sulfate, and chloride from an ethanol stream by contacting the ethanol stream with a clay material to thereby remove at least a portion of the sulfates. ... | 07/29/2008 |
| 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 |
| 7371903 | 2-butanol production method The invention relates to a process for the preparation of 2-butanol by enzymatic-catalyzed reduction of 2-butanone with a carbonyl reductase and a coenzyme and is characterized in that an aqueous phase, which contains the carbonyl reductase and the coenzyme, is cont... | 05/13/2008 |
| 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 |
| 7329330 | Method and device for the distillative processing of 1,6-hexanediol, 1,5-pentanediol and caprolactone A process for working up by distillation the crude products obtained in the process according to DE-A 196 07 954 and containing 1,6-hexanediol (HDO), 1,5-pentanediol (PDO) or caprolactone (CLO) in order to obtain the corresponding pure products, the working-up by di... | 02/12/2008 |
| 7301055 | Process for removing methanol from formaldehyde-containing solutions Process for removing methanol from formaldehyde-containing solutions. The present invention relates to a process for removing methanol from formaldehyde-containing solutions, with methanol being converted into formaldehyde dimethyl acetal by reactive distillation in... | 11/27/2007 |
| H2194 | Purification of phenols This invention relates to a process for the purification of phenols in a feedstock containing phenols and neutral oils and/or tar bases. The process includes liquid-liquid extraction of feedstock using a solvent and a counter-solvent, and separating the resulting so... | 07/03/2007 |
| 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 |
| 7183446 | Alcohol mixtures having 13 and 15 carbon atoms and the use thereof in the preparation of surface-active substances The present invention relates to an alcohol mixture which substantively comprises alcohols having 13 or 15 carbon atoms, to a process for its preparation, to a process for functionalizing these alcohol mixtures, and to the resultant functionalized alcohol mixtures a... | 02/27/2007 |
| 7157610 | Process for recovering methanol A process for recovering methanol from mixtures containing methanol and water, comprising multistage evaporation with heat integration, wherein the pressure is reduced from each stage to the next, and a downstream series of distillation stages with heat integration,... | 01/02/2007 |
| 7141611 | High molecular weight primary aliphatic alcohols obtained from natural products and uses thereof This invention provides an isolated mixture of higher molecular weight primary aliphatic alcohols having 20, 22, 24, 26, 27, 28, 30, 32 and 34 carbon atoms and having enhanced purity. This invention also provides a process for obtaining the alcohol mixture by extrac... | 11/28/2006 |
| 7141707 | Process for separating 2-butanol from tert-butanol/water mixtures The present invention relates to a process for separating 2-butanol from tert-butanol/water mixtures using a membrane to reduce a water concentration to less than the limit concentration of the distillation boundary line connecting the two azeotropes TBA/water and S... | 11/28/2006 |
| 7138552 | Method for producing C-alcohol mixtures The present invention relates to a process for preparing a C13-alcohol mixture which is suitable, in particular, as precursor for the preparation of compounds having surfactant properties and of plasticizers. ... | 11/21/2006 |
| 7125474 | Process for removing 2-butanol from tert-butanol/water mixtures The invention relates to a process for separating 2-butanol from an industrial mixture which includes 2-butanol, tert-butanol and water by separating water from the industrial mixture by distillation to obtain a distillate, wherein the distillate has, in terms of th... | 10/24/2006 |
| 7122709 | Method for obtaining ethanol A method for obtaining ethanol from a feed solution utilizes an extractant comprising a mixture of at least one alkane and at least one aliphatic alcohol having the formula wherein R1, R2, R... | 10/17/2006 |
| 7084313 | Three stage processes for the separation of supercritical or near-critical mixtures Processes for separating supercritical or near-critical mixtures containing hydrogen, a solvent gas, methanol and a fatty alcohol under an initial pressure of from 100 to 300 bar are described, wherein the processes comprise: (a) reducing the pressure of such a mixt... | 08/01/2006 |
| 7041199 | Process and device for hydrolytically obtaining a carboxylic acid alcohol from the corresponding carboxylate A process and a device for the catalytic hydrolysis of a carboxylate, e.g., methyl acetate, ethyl acetate, i- or n-propyl acetate, i- or n-butyl acetate, allyl acetate and methyl formate, into the corresponding carboxylic acid and alcohol, by a combination of a pre-... | 05/09/2006 |
| 7034193 | Method for purifying spent acid A method for purifying a spent acid catalyst from an acid catalyzed chemical reaction that generates a mixture of a product, spent add and tar, includes the steps of separating the mixture of product, spent acid, and tar into a product fraction and a spent acid frac... | 04/25/2006 |
| 7034060 | Polycosanols from wax The present invention provides a novel method for the preparation of a unique profile of primary aliphatic alcohols, having 24 to 30 carbon atoms, from the wax secreted by the insect Ericerus pela. Included in the present invention is the composition of matte... | 04/25/2006 |
| 7002045 | Ortho ester-based surfactant, its preparation and use The present invention relates to a new ortho ester-based surfactant, where the hydrophobic and hydrophilic parts are connected by ortho ester linkages to the molecule. The ortho ester has the formula where R is hydrogen... | 02/21/2006 |
| 6998498 | Aminocyclopentadienyl ruthenium complexes and preparation thereof Novel aminocyclopentadienyl ruthenium complex is useful as a catalyst in the racemization of a chiral compound. ... | 02/14/2006 |
| 6984666 | Polycosanols from wax The present invention provides a novel method for the preparation of a unique profile of primary aliphatic alcohols, having 24 to 30 carbon atoms, from the wax secreted by the insect Ericerus pela. Included in the present invention is the composition of matte... | 01/10/2006 |
| 6964728 | Separation process Bisphenol-A-bis(neopentylglycolphosphate) products of enhanced properties and processes for preparing them are described. One of the processes includes (a) mixing and reacting neopentyl glycol and bisphenol-A-bis(dichlorophosphate) in an inert polar organic solvent ... | 11/15/2005 |
| 6914081 | Rheology modified compositions and modification agents A method of making a rheology modified aqueous composition, particularly useful for drilling, milling and mining applications, is disclosed. The method includes admixing, with a clay and water, a material or materials whose constituents substantially conform to the ... | 07/05/2005 |
| 6863778 | Separation of tertiary butyl alcohol from diisobutylene A process for the separation of diisobutylene from tertiary butyl alcohol utilizing pressure swing azeotropic distillation to achieve the desired separation. The pressure swing azeotropic distillation takes advantage of the fact that different azeotropes are formed ... | 03/08/2005 |
| 6849162 | Method for the production of propylene oxide A process for the preparation of propylene oxide in the presence of methanol, in which propylene oxide is separated from a mixture propylene oxide and methanol, and the resultant methanol containing mixture is worked up, including seperating methanol from a mixture ... | 02/01/2005 |
| 6818799 | Process for removing tar from spent acid There is a process for removing by-product tar during the manufacture of isopropyl alcohol. The process comprises the following: a) reacting propylene with concentrated sulfuric acid and water to form isopropyl alcohol and a spent acid having a by-product tar; b) ca... | 11/16/2004 |
| 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 |
| 6768020 | Method for the catalytic conversion of organic carbonate and the use of a lanthanum catalyst therefor A method for the catalytic conversion of organic carbonate, wherein organic carbonate is contacted with alcohol and/or water in the presence of a lanthanum catalyst comprising at least about 7 wt. % of lanthanum supported on a support. ... | 07/27/2004 |
| 6733637 | Process for producing ultra-high purity isopropanol A process for producing high purity isopropyl alcohol. In one embodiment, the process includes the steps of: (a) feeding a feed stream comprising at least about 99.9 wt. % isopropyl alcohol into a separation column; (b) separating the isopropyl alcohol into an overh... | 05/11/2004 |
| 6683116 | Polycosanols from Ericerus pela wax The present invention provides a novel method for the preparation of a unique profile of primary aliphatic alcohols, having 24 to 30 carbon atoms, from the wax secreted by the insect Ericerus pela. Included in the present invention is the composition of m... | 01/27/2004 |
| 6679975 | Process for recovering the methanol contained in a liquid hydrocarbon feed The present invention aims to isolate the azeotropes formed in a distillation column (B1) by methanol, propane and butane. The azeotropes are then liquefied in heat exchanger (E2) and mixed in contactor (M1) with water in order to dissolve the methanol in... | 01/20/2004 |
| 6657092 | Process for the preparation of a highly linear alcohol composition Process for the preparation of a highly linear alcohol composition is provided comprising the steps of: (a) reacting carbon monoxide with hydrogen under Fischer-Tropsch reaction conditions in the presence of a Fischer-Tropsch catalyst comprising cobal... | 12/02/2003 |
| 6623604 | Method of recovering free fatty acids having low ester content and high acid value Methods of recovering free fatty acids having a low ester content from alkanol-containing solutions and oil mixtures containing tocopherols are disclosed which involve atmospheric or vacuum stripping at low temperatures. The recovered fatty acids have a h... | 09/23/2003 |
| 6613197 | Method for isolation of barely volatile organic compounds A method and apparatus for isolation of a barely volatile organic compound in a sample suspected to contain the same, e.g. a dioxin, which includes continuously adding superheated steam and a volatile and hardly water-soluble/water-insoluble solvent to a ... | 09/02/2003 |
| 6610888 | Reaction of a solution comprising a mixture A method of reacting a solution comprising a mixture of chemical compounds which are in chemical equilibrium with one another with at least one further chemical compound (9) is provided. The method comprises the following steps: fractionation of the solut... | 08/26/2003 |
