By Plural Liquid Phase Separation Patents (Class 568/918)
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Patent number: 8318988Abstract: Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of the crude ethanol products are employed to allow recovery of ethanol and remove acetal impurities.Type: GrantFiled: September 24, 2010Date of Patent: November 27, 2012Assignee: Celanese International CorporationInventors: Victor J. Johnston, Josefina T. Chapman, Radmila Jevtic, Heiko Weiner, Tianshu Pan, R. Jay Warner, Gerald Grusendorf, Nathan Bower, Lincoln M. Sarager
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Patent number: 8314272Abstract: Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of the crude ethanol products are employed to allow recovery of ethanol and remove impurities.Type: GrantFiled: October 6, 2011Date of Patent: November 20, 2012Assignee: Celanese International CorporationInventors: Lincoln Sarager, R. Jay Warner, Josefina T. Chapman, Robert Cunningham, Trinity Horton, Radmila Jevtic, Victor J. Johnston, Tianshu Pan
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Patent number: 8309773Abstract: Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of the crude ethanol products are employed to allow recovery of ethanol and remove impurities.Type: GrantFiled: August 6, 2010Date of Patent: November 13, 2012Assignee: Calanese International CorporationInventors: Radmila Jevtic, Victor J. Johnston, Tianshu Pan, Lincoln Sarager, R. Jay Warner, Heiko Weiner, Josefina Chapman, Robert Cunningham, Gerald Grusendorf, Trinity Horton
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Patent number: 8304587Abstract: Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of crude ethanol product are employed to allow recovery of ethanol and remove impurities. In addition, the process involves separating the crude ethanol product using an extractive distillation column that employs an extraction agent, such as a recycled stream comprising water.Type: GrantFiled: August 6, 2010Date of Patent: November 6, 2012Assignee: Celanese International CorporationInventors: R. Jay Warner, Wael Amleh, Gerald Grusendorf, Trinity Horton, Radmila Jevtic, Victor J. Johnston, Fred Ronald Olsson, Nathan Kirk Powell, Manuel Salado, Lincoln Sarager
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Patent number: 8304586Abstract: Purifying and/or recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of crude ethanol mixture are employed to allow recovery of ethanol and remove impurities. In addition, the process involves returning acetaldehyde separated from the crude ethanol product to the reactor.Type: GrantFiled: August 6, 2010Date of Patent: November 6, 2012Assignee: Celanese International CorporationInventors: Radmila Jevtic, Victor J. Johnston, R. Jay Warner, Heiko Weiner, Nathan Bower, Josefina T. Chapman, Gerald Grusendorf
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Patent number: 8288596Abstract: Acetals are formed from an aldehyde hydrogenation product mixture comprising alcohols and at most 2% of alde-hydes and the product is distilled to yield purified alcohols and a second stream containing acetals and/or unsaturated ethers.Type: GrantFiled: February 27, 2008Date of Patent: October 16, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ronald Dean Garton, Corey W. Reed, Krishna Kulai Rao, Bruce D. Lilly, Ramzi Yanni Saleh, Raphael Frans Caers
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Patent number: 8273927Abstract: A process is provided for the recovery of alcohol from its aqueous solution by dissolving caustic in the solution to generate a phase separation. One layer contains the alcohol product and the other layer waste water. By recovering and recycling the caustic, a self-contained process is realized.Type: GrantFiled: August 18, 2010Date of Patent: September 25, 2012Inventor: John E. Stauffer
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Patent number: 8222466Abstract: In one embodiment, the invention is to a process for producing a water stream comprising the steps of hydrogenating acetic acid to form a crude ethanol product and separating at least a portion of the crude ethanol product in at least one column of a plurality of columns into a distillate comprising ethanol and a residue comprising the water stream. The water stream preferably is essentially free of organic impurities other than acetic acid and ethanol.Type: GrantFiled: August 6, 2010Date of Patent: July 17, 2012Assignee: Celanese International CorporationInventors: Trinity Horton, Radmila Jevtic, Victor J. Johnston, Lincoln Sarager, R. Jay Warner, Heiko Weiner
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Patent number: 8143460Abstract: A method comprising applying a controlled flow cavitation apparatus to an alcohol production process in order to increase alcohol yield. A grain-based liquid medium comprising grain and a liquid carrier can be passed through a controlled flow cavitation apparatus at a velocity capable of generating a hydrodynamic cavitation zone where the grain size can be reduced. One or more controlled flow cavitation apparatuses can be applied at various points of an alcohol production process, such as a starch-to-ethanol production process.Type: GrantFiled: January 13, 2010Date of Patent: March 27, 2012Assignee: Arisdyne Systems, Inc.Inventor: Oleg Kozyuk
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Patent number: 8129573Abstract: 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 column is less than 50% by weight and a reflux amount of a condensate to a distillation column is controlled such a manner that an alcohol concentration of an alcohol/water mixed vapor that is distilled from the distillation column is 65 to 85% by weight. According to the present method, the purification for obtaining an anhydrous alcohol from an aqueous solution of a fermentation alcohol with the use of a mash column, a distillation column, an evaporator and a membrane separator can be more conveniently carried out with an extremely high energy efficiency as the whole process.Type: GrantFiled: March 2, 2009Date of Patent: March 6, 2012Assignee: UBE Industries, Ltd.Inventors: Masao Kikuchi, Shunsuke Nakanishi
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Patent number: 8088958Abstract: Methods for recovery of at least one alcohol from dilute aqueous alcohol feed streams are described. The methods include steps of a) providing a source of a dilute aqueous alcohol feed stream including at least one alcohol; b) substantially removing any solids from the dilute aqueous alcohol feed stream to form a feed stream substantially devoid of solids; c) circulating the feed stream substantially devoid of solids through a liquid-liquid extraction system having multiple equilibrium stages; d) recovering a raffinate phase substantially depleted in the at least one alcohol and an extract phase substantially enriched in the at least one alcohol; e) passing the extract phase to a recovery system wherein the extract phase is subjected to microwave radiation; f) recovering the volatilized product; and g) recycling the solvent to the liquid-liquid extraction system. The microwave radiation substantially heats the alcohol but not the solvent to form a volatilized product of substantially pure alcohol.Type: GrantFiled: April 14, 2009Date of Patent: January 3, 2012Assignee: Trans Ionics CorporationInventor: Robert C. Schucker
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Publication number: 20110306801Abstract: Methods for extracting an organic solute from a feed source using aromatic extraction solvents are described herein. Solvent modifiers such as, for example, cetyl alcohol may also be used to alter the properties of the solvent and improve the extraction. In some embodiments, the extraction solvent can be recycled after performing the extraction. In some embodiments, the organic solute may be separated from the extraction solvent after the extraction. For example, in some embodiments, the organic solute may be adsorbed on to 5 ? molecular sieve zeolites and then removed thereafter. Removal of the organic solute can take place by heating, applying a vacuum or a combination thereof. Apparatuses for extracting an organic solute from a feed source are also described herein.Type: ApplicationFiled: February 19, 2010Publication date: December 15, 2011Applicant: Trans Ionics CorporationInventor: Robert C. Schucker
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Publication number: 20110294179Abstract: A method of making butanol from at least one fermentable carbon source that overcomes the issues of toxicity resulting in an increase in the effective titer, the effective rate, and the effective yield of butanol production by fermentation utilizing a recombinant microbial host wherein the butanol is extracted into specific organic extractants during fermentationType: ApplicationFiled: August 16, 2011Publication date: December 1, 2011Applicant: BUTAMAX(TM) ADVANCED BIOFUELS LLCInventors: MICHAEL CHARLES GRADY, Mehmedalija Jahic, Ranjan Patnaik
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Publication number: 20110288345Abstract: A process for recovering butanol from a mixture comprising a water-immiscible organic extractant, water, butanol, and optionally a non-condensable gas, is provided. The butanol is selected from 1-butanol, 2-butanol, isobutanol, and mixtures thereof. The extractant comprises at least one solvent selected from the group consisting of C7 to C22 fatty alcohols, C7 to C22 fatty acids, esters of C7 to C22 fatty acids, C7 to C22 fatty aldehydes, and mixtures thereof.Type: ApplicationFiled: November 18, 2010Publication date: November 24, 2011Applicant: BUTAMAX(TM) ADVANCED BIOFUELS LLCInventors: Michael Charles Grady, William D. Parten, Bruce Vrana, Yihui Tom Xu
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Patent number: 8053610Abstract: 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 column is less than 50% by weight and a reflux amount of a condensate to a distillation column is controlled such a manner that an alcohol concentration of an alcohol/water mixed vapor that is distilled from the distillation column is 55 to 85% by weight. According to the present method, the purification for obtaining an anhydrous alcohol from an aqueous solution of a fermentation alcohol with the use of a mash column, a pressurized distillation column and a membrane separator can be more conveniently carried out with an extremely high energy efficiency as the whole process.Type: GrantFiled: March 31, 2009Date of Patent: November 8, 2011Assignee: Ube Industries, Ltd.Inventors: Masao Kikuchi, Shunsuke Nakanishi
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Publication number: 20110159558Abstract: A method for producing butanol through microbial fermentation, in which the butanol product is removed during the fermentation by extraction into a water-immiscible organic extractant in the presence of at least one electrolyte at a concentration at least sufficient to increase the butanol partition coefficient relative to that in the presence of the salt concentration of the basal fermentation medium, is provided. The electrolyte may comprise a salt which dissociates in the fermentation medium, or in the aqueous phase of a biphasic fermentation medium, to form free ions. Also provided is a method and composition for recovering butanol from a fermentation medium.Type: ApplicationFiled: November 23, 2010Publication date: June 30, 2011Applicant: BUTAMAX(TM) ADVANCED BIOFUELS LLCInventors: MICHAEL CHARLES GRADY, RANJAN PATNAIK
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Publication number: 20110136193Abstract: A method is provided for producing butanol through microbial fermentation, in which the butanol product is removed during the fermentation by extraction into a water-immiscible organic extractant in the presence of at least one osmolyte at a concentration at least sufficient to increase the butanol partition coefficient relative to that in the presence of the osmolyte concentration of the basal fermentation medium and of an optional fermentable carbon source. The osmolyte may comprise a monosaccharide, a disaccharide, glycerol, sugarcane juice, molasses, polyethylene glycol, dextran, high fructose corn syrup, corn mash, starch, cellulose, and combinations thereof. Also provided is a method and composition for recovering butanol from a fermentation medium.Type: ApplicationFiled: November 23, 2010Publication date: June 9, 2011Applicant: BUTAMAX(TM) ADVANCED BIOFUELS LLCInventors: MICHAEL CHARLES GRADY, RANJAN PATNAIK
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Publication number: 20110112337Abstract: The invention relates to a method for the liquid-liquid extraction of alcohols from aqueous solutions using at least one ionic liquid containing a tricyanomethide anion as solvent.Type: ApplicationFiled: May 28, 2009Publication date: May 12, 2011Applicant: MERCK PATENT GESELLSCHAFTInventors: William-Robert Pitner, Emil Ferdinand Aust, Michael Schulte, Uschi Schmid-Grossmann
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Publication number: 20110071324Abstract: The invention relates to a method for the liquid-liquid extraction of alcohols from aqueous solutions using at least one ionic liquid containing a tetra-cyanoborate anion as solvent.Type: ApplicationFiled: May 15, 2009Publication date: March 24, 2011Applicant: Merck Patent GesellschaftInventors: William-Robert Pitner, Michael Schulte, Andrzej Górak, Francesca Santangelo, Annebart Engberg Wentink
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Patent number: 7834225Abstract: 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 required as compared to thermal distillation. The method involves high throughput fixed bed atomizers with a specially designed carrier gas flow for aerosolization, extraction, and transport of mist. The mist richer in the desired component is then collected and condensed by electrostatic or other de-misting means. Repeated processes can achieve high separation efficiency. The efficiency of separation can be controlled by varying the ultrasonic frequency, power, and number of arrays, liquid surface tension and interfacial tension of mixtures.Type: GrantFiled: March 7, 2007Date of Patent: November 16, 2010Assignee: Nanomist Systems, LLCInventors: Kayyani C. Adiga, Rajani Adiga
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Patent number: 7795376Abstract: A method of isolating a PHA, includes combining the PHA, a first solvent and a second solvent to form a combination, the first solvent being capable of forming an azeotrope with the second solvent; and heating the combination to form the azeotrope of the first and second solvents.Type: GrantFiled: July 2, 2009Date of Patent: September 14, 2010Assignee: Metabolix Inc.Inventors: Johan Van Walsem, Erik Anderson, John Licata
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Publication number: 20100222519Abstract: One aspect of the present invention relates to polymers containing redox-responsive moieties (such as, ferrocene). In certain embodiments, the present invention relates to in-situ continuous separation systems which use such redox-responsive polymers for low-molecular weight alcohol removal from an aqueous mixture; such systems enhance the production of low-molecular weight alcohols by reducing the product inhibition effects that plague their production from bio-mass by fermentation.Type: ApplicationFiled: February 27, 2009Publication date: September 2, 2010Applicant: Massachusetts Institute of TechnologyInventors: Abhinav Akhoury, Lev E. Bromberg, Trevor Alan Hatton
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Publication number: 20100221802Abstract: A method of making butanol from at least one fermentable carbon source that overcomes the issues of toxicity resulting in an increase in the effective titer, the effective rate, and the effective yield of butanol production by fermentation utilizing a recombinant microbial host wherein the butanol is extracted into specific organic extractants during fermentationType: ApplicationFiled: April 13, 2010Publication date: September 2, 2010Applicant: BUTAMAX(TM) ADVANCED BIOFUELS LLCInventors: MICHAEL CHARLES GRADY, MEHMEDALIJA JAHIC, RANJAN PATNAIK
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Patent number: 7667082Abstract: A method comprising applying a controlled flow cavitation apparatus to an alcohol production process in order to increase alcohol yield. A grain-based liquid medium comprising grain and a liquid carrier can be passed through a controlled flow cavitation apparatus at a velocity capable of generating a hydrodynamic cavitation zone where the grain size can be reduced. One or more controlled flow cavitation apparatuses can be applied at various points of an alcohol production process, such as a starch-to-ethanol production process.Type: GrantFiled: May 6, 2008Date of Patent: February 23, 2010Assignee: Arisdyne Systems, Inc.Inventor: Oleg V. Kozyuk
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Publication number: 20090259078Abstract: Methods for recovery of at least one alcohol from dilute aqueous alcohol feed streams are described. The methods include steps of a) providing a source of a dilute aqueous alcohol feed stream including at least one alcohol; b) substantially removing any solids from the dilute aqueous alcohol feed stream to form a feed stream substantially devoid of solids; c) circulating the feed stream substantially devoid of solids through a liquid-liquid extraction system having multiple equilibrium stages; d) recovering a raffinate phase substantially depleted in the at least one alcohol and an extract phase substantially enriched in the at least one alcohol; e) passing the extract phase to a recovery system wherein the extract phase is subjected to microwave radiation; f) recovering the volatilized product; and g) recycling the solvent to the liquid-liquid extraction system. The microwave radiation substantially heats the alcohol but not the solvent to form a volatilized product of substantially pure alcohol.Type: ApplicationFiled: April 14, 2009Publication date: October 15, 2009Applicant: Trans Ionics CorporationInventor: Robert C. Schucker
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Patent number: 7332092Abstract: 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 one alkene alcohol and/or at least one alkene alcohol derivative, then removing a product stream having a higher concentration of the E or Z isomer of at least one alkene alcohol or derivative of the alkene alcohol relative to the concentration of the E or Z isomer of the alkene alcohol or derivative of the alkene alcohol in the feed stream.Type: GrantFiled: March 7, 2007Date of Patent: February 19, 2008Assignees: Calgon Carbon Corporation, InnovaAroma SAInventors: Chen-Chou Chiang, Elad Shabtai
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Patent number: 7301055Abstract: 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 the presence of an acidic fixed-bed catalyst, and the resultant mixture comprising methanol, formaldehyde dimethyl acetal and possibly other impurities being distilled off.Type: GrantFiled: November 19, 2001Date of Patent: November 27, 2007Assignee: Ticona GmbHInventors: Michael Hoffmockel, Matthias Göring, Juergen Lingnau, Karl-Friedrich Mück
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Patent number: 7211703Abstract: 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 one alkene alcohol and/or at least one alkene alcohol derivative, then removing a product stream having a higher concentration of the E or Z isomer of at least one alkene alcohol or derivative of the alkene alcohol relative to the concentration of the E or Z isomer of the alkene alcohol or derivative of the alkene alcohol in the feed stream.Type: GrantFiled: April 27, 2005Date of Patent: May 1, 2007Assignees: Calgon Carbon Corporation, InnovAroma SAInventors: Chen-Chou Chiang, Elad Shabtai
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Patent number: 7157610Abstract: 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, wherein the pressure is increased from each stage to the next. The process reduces the amount of energy required for methanol recovery.Type: GrantFiled: December 19, 2005Date of Patent: January 2, 2007Assignees: Degussa AG, Uhde GmbHInventors: Willi Hofen, Thomas Haas, Bärbel Kolbe
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Patent number: 7141611Abstract: 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 extracting a natural product with organic solvents with or without saponification of the natural product. The alcohol mixture is useful in pharmaceutical compositions, foodstuffs and dietary supplements and is effective for lowering total cholesterol and LDL-cholesterol and increasing HDL-cholesterol levels and therefore is effective in treating hypercholesterolemia. The composition may be used to reduce the risk of coronary heart disease, to inhibit the atherosclerotic process (platelet hyperaggregability, ischemia and thrombosis), and can be used as an anti-inflammatory and anti-thrombotic agent. The composition also possesses neurotrophic properties and is useful for improving male sexual activity.Type: GrantFiled: July 18, 2003Date of Patent: November 28, 2006Assignee: WyethInventors: William R. Gamble, Zhengjie Liu, David T. Bailey, Pedro P. Perez, Dean P. Stull, Steven L. Richheimer, Rebecca L. Nichols, Rod Lenoble
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Patent number: 7122709Abstract: 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, R3, R4, R5, and R7 each independently represent H or a straight chain alkyl group having from 1 to 4 carbon atoms; R6 represents a straight chain alkyl group having from 1 to 4 carbon atoms, or taken together R3 and R6 represent an alkylene group having from 1 to 4 carbon atoms; and m and n independently represent 0, 1, 2, or 3, with the proviso that if R4 represents H, then at least two of R1, R2, and R3, or at least one of R5 and R7, are straight chain alkyl groups having from 1 to 4 carbon atoms.Type: GrantFiled: March 13, 2003Date of Patent: October 17, 2006Assignee: 3M Innovative Properties CompanyInventors: Dan L. Fanselow, James S. Mrozinski, Todd W. Johnson, Brinda B. Lakshmi
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Patent number: 7034193Abstract: 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 fraction, said spent acid fraction comprising a mixture of spent acid and tar, and separating the spent acid fraction, by flotation separation, centrifugation, or liquid-liquid coalescence, into a tar fraction and a de-tarred spent acid fraction. The fluidized tar and the de-tarred spent acid can each be further processed to produce concentrated acid.Type: GrantFiled: April 15, 2004Date of Patent: April 25, 2006Assignee: Rhodia Inc.Inventors: Richard Wai-Chun Liu, Philip Dean Hill, Thomas Edwin Pruitt, Forrest Lee Sanders, Albert Yi Yang
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Patent number: 7034060Abstract: 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 matter, referred to herein as “polycosanol” produced by the method of this invention. The polycosanol composition is comprised primarily of the four primary aliphatic alcohols, tetracosanol, hexacosanol, octacosanol and triacontanol. Further included in this invention is the use of said composition of matter for the prevention and treatment of obesity, syndrome X, diabetes, hypercholesterolemia, atherosclerotic complications, ischemia and thrombosis.Type: GrantFiled: November 16, 2004Date of Patent: April 25, 2006Assignee: Unigen Pharmaceuticals, Inc.Inventors: Qi Jia, Ji-Fu Zhao
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Patent number: 7002045Abstract: 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 or an aliphatic group with 1–7 carbon atoms; R1 is hydrogen or an alkyl group with 1–5 carbon atoms; A1 is an alkyleneoxy group with 2–4 carbon atoms, the number of ethyleneoxy groups being at least 50% of the total number of alkyleneoxy groups; n1 is a number between 1 and 30; R2 is an aliphatic group with 5–22 carbon atoms; A2 is an alkyleneoxy group with 3–4 carbon atoms; n2 is a number between 0–30, provided that when R2 is an aliphatic group with 5–6 carbon atoms n2 is at least 1; R3 is selected from the group consisting of (A1)n1R1, (A2)n2R2 and an alkyl group with 1–6 carbon atoms, where A1, n1, R1, A2, n2 and R2 have the same meaning as mentioned above; or a di- or polycondensate via any of the free hydroxy groups of the ortho ester.Type: GrantFiled: August 18, 2003Date of Patent: February 21, 2006Assignee: Akso Nobel N.V.Inventors: Karin Bergstrom, Per-Erik Hellberg
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Patent number: 6984666Abstract: 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 matter, referred to herein as “polycosanol” produced by the method of this invention. The polycosanol composition is comprised primarily of the four primary aliphatic alcohols, tetracosanol, hexacosanol, octacosanol and triacontanol. Further included in this invention is the use of said composition of matter for the prevention and treatment of obesity, syndrome X, diabetes, hypercholesterolemia, atherosclerotic complications, ischemia and thrombosis.Type: GrantFiled: November 16, 2004Date of Patent: January 10, 2006Assignee: Unigen Pharmaceuticals, Inc.Inventors: Qi Jia, Ji-Fu Zhao
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Patent number: 6818799Abstract: 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) capturing at least a portion of the isopropyl alcohol; c) contacting the spent acid with a gas in bubble form; d) allowing a least a portion of the tar to separate from the remainder of the spent acid to form a layer of tar and a layer of cleaned acid solution; e) capturing the tar; and h) recycling the cleaned acid solution to step a) as a source of sulfuric acid. There is also a process for removing by-product tar during the manufacture of methyl ethyl ketone. The process is substantially the same except that 1-butene is substituted for propylene. There is also a process for removing tar from a spent acid.Type: GrantFiled: April 17, 2003Date of Patent: November 16, 2004Assignee: Rhodia, Inc.Inventors: Richard Wai-Chun Liu, Philip Dean Hill, Thomas Edwin Pruitt, Forrest Lee Sanders, Albert Yi Yang
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Patent number: 6770790Abstract: 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 impurities in the tertiary butyl alcohol.Type: GrantFiled: October 17, 2003Date of Patent: August 3, 2004Assignee: ARCO Chemical Technology, L.P.Inventors: Xiangmin Li, Lawrence M. Candela, Yuan-Zhang Han, Andrew P. Kahn
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Patent number: 6683116Abstract: 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 matter, referred to herein as “polycosanol” produced by the method of this invention. The polycosanol composition is comprised primarily of the four primary aliphatic alcohols, tetracosanol, hexacosanol, octacosanol and triacontanol. Further included in this invention is the use of said composition of matter for the prevention and treatment of obesity, syndrome X, diabetes, hypercholesterolemia, atherosclerotic complications, ischemia and thrombosis.Type: GrantFiled: January 31, 2003Date of Patent: January 27, 2004Assignee: Unigen Pharmaceuticals, Inc.Inventors: Qi Jia, Ji-Fu Zhao
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Patent number: 6596776Abstract: The present invention relates to a naturally obtained mixture of higher molecular weight primary aliphatic alcohols which contain 20 to 34 carbon atoms. This invention also relates to the process for obtaining the alcohol mixture by extraction and purification with organic solvents from a natural product, such as beeswax with and without saponification of the natural product. The alcohol mixture obtained from beeswax has enhanced purity and contains a mixture of alcohols having 20, 22, 24, 26, 27, 28, 30, 32 and 34 carbon atoms. The alcohol mixture is useful in pharmaceutical compositions, foodstuffs and dietary supplements and is effective for lowering cholesterol and LDL-cholesterol and increasing HDL-cholesterol levels so that it is effective in treating hypercholesterolemia.Type: GrantFiled: April 25, 2002Date of Patent: July 22, 2003Assignee: Hauser, Inc.Inventors: William R. Gamble, Zhengjie Liu, David T. Bailey, Pedro P. Perez, Dean P. Stull, Steven L. Richheimer, Rebecca L. Nichols, Rod Lenoble
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Patent number: 6572831Abstract: A material contaminated with a solvent is treated with a hydrofluorocarbon to remove the contaminant. The hydrofluorocarbon can be tetrafluoroethane.Type: GrantFiled: June 7, 1999Date of Patent: June 3, 2003Assignee: Advanced Phytonics LimitedInventor: Mazin Nicola
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Publication number: 20020058713Abstract: The present invention relates to a naturally obtained mixture of higher molecular weight primary aliphatic alcohols which contain 20 to 34 carbon atoms. This invention also relates to the process for obtaining the alcohol mixture by extraction and purification with organic solvents from a natural product, such as beeswax with and without saponification of the natural product. The alcohol mixture obtained from beeswax has enhanced purity and contains a mixture of alcohols having 20, 22, 24, 26, 27, 28, 30, 32 and 34 carbon atoms. The alcohol mixture is useful in pharmaceutical compositions, foodstuffs and dietary supplements and is effective for lowering cholesterol in LDL-C levels so that it is effective in treating hypercholesterolemia. Consequently the composition may be used to reduce the risk of coronary heart disease, to inhibit the atherosclerotic process (platelet hyperaggregability, ischemia and thrombosis) and also to act as an anti-inflammatory and anti-thrombotic agent.Type: ApplicationFiled: April 27, 2001Publication date: May 16, 2002Inventors: William R. Gamble, Zhengjie Liu, David T. Bailey, Pedro P. Perez
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Patent number: 6225354Abstract: The present invention relates to a naturally obtained mixture of higher molecular weight primary aliphatic alcohols which contain 24 to 34 carbon atoms. This invention also relates to the process for obtaining the alcohol mixture by extraction and purification with organic solvents from beeswax without saponification ofthe beeswax. The alcohol mixture obtained from beeswax has enhanced purity and contains a mixture of alcohols having 24, 26, 27, 28, 29, 30, 32 and 34 carbon atoms. The alcohol mixture is useful in pharmaceutical compositions, foodstuffs and dietary supplements and is effective for lowering cholesterol in LDL-C levels so that it is effective in treating hypercholesterolemia. Consequently the composition may be used to reduce the risk of coronary heart disease, the atherosclerotic process (platelet hyperaggregability, ischemia and thrombosis) and also acts as an anti-inflammatory and anti-thrombotic agent.Type: GrantFiled: June 21, 1999Date of Patent: May 1, 2001Assignee: Cholesterol Control Laboratories, Inc.Inventor: Pedro P. Perez
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Patent number: 5985100Abstract: Butanol and dibutyl ether are separated from a mixture containing water, dibutyl ether and n-butanol, 2-butanol and/or isobutanol by a process in whicha) the mixture is introduced into a first distillation column, essentially butanol is separated off at the bottom of this distillation column and the mixture taken off at the top of the distillation columnb) is introduced into a second distillation column and essentially dibutyl ether is separated off at the bottom of this second distillation column and the mixture formed at the top of the second distillation column is removed,c) the second distillation column being operated at a higher pressure than the first distillation column and at least one of the two mixtures taken off via the top of the distillation columns being subjected to phase separation, only the organic phase separated off being fed to the second distillation column in the case of phase separation downstream of the first distillation column, and separation into an aqueous and an organic phase alsType: GrantFiled: February 17, 1998Date of Patent: November 16, 1999Assignee: BASF AktiengesellschaftInventors: Maik Aron, Harald Rust
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Patent number: 5789629Abstract: 3-Methyl-1-butanol is difficult to separate from 1-pentanol by conventional distillation or rectification because of the proximity of their boiling points. 2 Methyl-1-butanol can be easily separated from 1-pentanol by extractive distillation. Effective agents are phenol, anisole and methyl salicylate.Type: GrantFiled: February 24, 1997Date of Patent: August 4, 1998Inventor: Lloyd Berg
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Patent number: 5645695Abstract: 2-Methyl-1-propanol is difficult to separate from 2-methyl-1-butanol by conventional distillation or rectification because of the proximity of their boiling points. 2-Methyl-1-propanol can be readily separated from 2-methyl-1-butanol by azeotropic distillation. Effective agents are tetrahydrofuran, methyl acetate and toluene.Type: GrantFiled: July 8, 1996Date of Patent: July 8, 1997Inventor: Lloyd Berg
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Patent number: 5585527Abstract: A process for separating a first component of a process stream from a second component of a process stream in a single vessel has been developed. The separation process uses an apparatus having a distillation zone to separate a first component from a second component of a process stream, thereby producing a distillation zone overhead stream enriched in the first component, and a membrane separation zone containing a membrane capable of selectively removing additional amounts of the second component from the distillation overhead stream. The benefit is the production of a high purity process at lower capital equipment costs.Type: GrantFiled: October 31, 1994Date of Patent: December 17, 1996Assignee: UOPInventor: Terry L. Marker
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Patent number: 5559254Abstract: A process is disclosed for separating a mixture of methanol and tetrahydrofuran into its components. The separation is carried out in the liquid or gaseous phase through an organophilic membrane, for example, a plasma polymerization membrane.Type: GrantFiled: March 24, 1995Date of Patent: September 24, 1996Assignee: BASF AktiengesellschaftInventors: Joseph Krug, Christof Palm
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Patent number: 5543564Abstract: This invention embodies a process for releasing acidic organic compounds in high yield and good purity from aqueous solutions of their salts which comprises converting the salts by carbon dioxide to their corresponding free acidic organic compounds and metal hydrogen carbonates, removing the acidic organic compounds from the mixture by extraction with an essentially water-insoluble organic solvent, and re-extracting the organic phase with carbon dioxide containing water. Using this process, the acidic organic compounds are completely released from their corresponding salts, i.e., the organic solution is free of salt. The acidic organic compounds released by the claimed process are organic compounds which contain acidic protons which can be replaced by metals. Some examples are carboxylic acids, sulfonic acids, phosphonic acids, phenols, naphthols, and aliphatic alcohols.Type: GrantFiled: January 11, 1995Date of Patent: August 6, 1996Assignee: Hoechst AktiengesellschaftInventors: J urgen Kulpe, Heinz Strutz, Hans-Martin R uffer, Siegbert Rittner
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Patent number: 5494556Abstract: A method of separating a liquid mixture wherein the liquid mixture is heated; the heated liquid mixture is supplied to a pervaporation membrane module to separate a permeable component of the liquid; a portion of non-permeated liquid is circulated through a circulation pipe into a liquid mixture feeding pipe before a heater, and the remaining portion of the non-permeated liquid is extracted to the outside of the system, and wherein the temperature of the liquid in the liquid mixture feeding pipe in which the non-permeated liquid has been mixed with the liquid mixture or in the circulation pipe for the non-permeated liquid, is measured, and when the measured temperature is out of a predetermined range, new supply of the liquid mixture and/or extraction of the non-permeated liquid is stopped.Type: GrantFiled: November 28, 1994Date of Patent: February 27, 1996Assignees: Mitsubishi Chemical Corporation, Mitsubishi Kasei Engineering CompanyInventors: Masaaki Mita, Masumi Hino, Moriyoshi Kudo
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Patent number: RE35107Abstract: High purity isopropyl acetate and ethanol are recovered from a process stream containing isopropyl acetate, ethanol and water by a multiple step process including extracting substantially all of the ethanol from the stream using water as a solvent, stripping the extract stream to remove substantially all of the remaining isopropyl acetate as an overhead recycle stream, which is combined with the fresh feed stream prior to the extraction step, fractionating the ethanol-rich stripping column bottoms stream to produce a ethanol-water azeotropic overhead stream and using a portion of the fractionating column bottoms stream as the solvent for the extraction step.Type: GrantFiled: August 11, 1992Date of Patent: December 5, 1995Assignee: HarborchemInventor: William J. Curry