Preparing Esters By Esterification Or Carbonylation Patents (Class 560/204)
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Patent number: 8399697Abstract: The present invention relates to a process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms in the presence of an adsorbent and subsequent steam treatment in the course of workup of the crude ester.Type: GrantFiled: October 6, 2010Date of Patent: March 19, 2013Assignee: Oxea GmbHInventors: Tonia Weber, Oliver Borgmeier, Guido D. Frey, Heinz Strutz
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Publication number: 20130036713Abstract: The present invention relates to a process for the preparation of an ester in a reactor, wherein at least a portion of the process components is led in a delivery stream outside the reactor over a heat transfer surface as a film, the ratio of the delivery stream to the heat transfer surface being in a range of from 0.25 to 3 m/h, a device, a process for the preparation of a thermoplastic composition comprising the ester prepared according to the invention, a process for the production of a shaped article comprising the ester according to the invention or the thermoplastic composition according to the invention, a process for the production of a packed product, a process for the production of an at least partly coated object, and uses of the esters according to the invention as an additive in various compositions.Type: ApplicationFiled: December 30, 2010Publication date: February 14, 2013Inventors: Peter Daute, Wilhelm Reiners, Martin Schäfer, Udo Frerichs, Hinrich Hildebrandt, Joern Ellerbrake
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Publication number: 20130039872Abstract: The present invention relates to a process for the preparation of an ester in a reactor, a device, a process for the preparation of a thermoplastic composition comprising the ester prepared according to the invention, a process for the production of a shaped article comprising the ester according to the invention or the thermoplastic composition according to the invention, a process for the production of a packed product, a process for the production of an at least partly coated object, and uses of the esters according to the invention as an additive in various compositions.Type: ApplicationFiled: December 30, 2010Publication date: February 14, 2013Inventors: Peter Daute, Wilhelm Reiners, Martin Schäfer, Udo Frerichs, Hinrich Hildebrandt, Joern Ellerbrake
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Publication number: 20130035504Abstract: Provided are processes for the production of (meth)acrylic esters of polyols, in which for 80 mol % or more of the esters, all of the OH groups of the polyols are esterified. Certain processes relate to reaction of polyols with acrylic acid and/or methacrylic acid in the presence of acidic esterification catalysts and in the presence of polymerization inhibitors, operating with reaction mixtures which are liquid at reaction temperature and are free from nonreacting solvents and/or azeotropic entrainers, the resultant water of condensation being stripped from the gas phase of the reaction space, and the (meth)acrylic acid is metered in three or more portions.Type: ApplicationFiled: August 2, 2012Publication date: February 7, 2013Applicant: Cognis IP Management GmbHInventors: Juergen Baro, Jean-Marc Ballin
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Publication number: 20130030075Abstract: Polycondensates with long-chain linear methylene sequences, their production, a method for producing linear odd-numbered C>20 ?,?-dicarboxylic acids and derivatives thereof and applications of the polycondensates are described.Type: ApplicationFiled: January 24, 2011Publication date: January 31, 2013Inventors: Stefan Mecking, Dorothee Quinzler
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Publication number: 20120329981Abstract: The invention provides a process for the preparation of valerolactone, said process comprising reacting levulinic acid with hydrogen by using a solid Ru catalyst, characterised in that the process is carried out in the presence of at least 0.08% (w/w) water relative to the amount of levulinic acid. Said process may be faster and more selective. This process advantageously allows the production of valerolactone from renewable sources. The valerolactone may be used in the preparation of methylpentenoate, adipic acid dimethylester, adipic acid, hexamethylenediamine, and polyamide 6,6 (all claimed).Type: ApplicationFiled: June 20, 2012Publication date: December 27, 2012Applicant: DSM IP ASSETS B.V.Inventors: Anna Maria Cornelia Francisca Castelijns, Michele Catherine Christianne Janssen, Henricus Wilhemus Leonardus Marie Vaessen
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Patent number: 8338636Abstract: A process is disclosed which employs hydrogenation and esterification to form alkyl diesters. The process subjects an unrefined or otherwise not purified composition comprising maleic anhydride production residue to the processes of hydrogenation and esterification and forming diesters at high conversion efficiency.Type: GrantFiled: August 5, 2010Date of Patent: December 25, 2012Assignee: Invista North America S.A R.L.Inventors: Yanhui Sun, Richard P. Beatty
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Publication number: 20120317876Abstract: Reacting an alkylene carbonate, such as ethylene carbonate, with dimer acid in the presence of a catalyst, such as a tertiary amine catalyst, gives a dimer acid diester having essentially no sulfur, and thus may be added to ultra-low sulfur diesel fuel downstream of a refinery. The diester enhances the lubricity properties of hydrocarbon fuels, increases their service life and fuel efficiency. The manufacturing process time may be decreased significantly compared with a process using ethylene glycol instead of ethylene carbonate, and much less ethylene glycol by-product results.Type: ApplicationFiled: August 29, 2012Publication date: December 20, 2012Applicant: Baker Hughes IncorporatedInventors: Viet Q. Hoang, Philip L. Leung, Gordon T. Rivers
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Publication number: 20120309994Abstract: Suggested is the use of adducts of 2 to 50 moles propylene oxide to hydroxy carboxylic acids as monomer or co-monomer components in the production of polyesters and polyurethanes or reactive solvents for polymers.Type: ApplicationFiled: August 13, 2012Publication date: December 6, 2012Applicant: Cognis IP Management GmbHInventors: Joaquin Bigorra Llosas, Luis Llaurado, Francesc Gusi
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Patent number: 8324423Abstract: The present invention is generally directed to diester-based lubricant compositions. The present invention is also directed to methods of making these and other similar lubricant compositions. In some embodiments, the methods for making such diester-based lubricants utilize a biomass precursor and/or low value Fischer-Tropsch (FT) olefins and/or alcohols so as to produce high value diester-based lubricants. In some embodiments, such diester-based lubricants are derived from FT olefins and fatty acids. The fatty acids can be from a bio-based source (i.e., biomass, renewable source) or can be derived from FT alcohols via oxidation.Type: GrantFiled: June 25, 2010Date of Patent: December 4, 2012Assignee: Chevron U.S.A. Inc.Inventors: Stephen Joseph Miller, Saleh A. Elomari
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Publication number: 20120298125Abstract: A method for producing triacetin from one or more plants of genus Nicotiana is provided. The triacetin can be derived inter alia from Nicotiana species biomass or from seed. In certain embodiments, the triacetin is produced by condensation of glycerin, generated by hydrolysis of acylglycerol-containing starting material derived from tobacco biomass or seed, and acetic acid, also derived from tobacco biomass or seed. The invention also provides articles and compositions including tobacco articles and tobacco compositions that include triacetin produced from one or more plants of genus Nicotiana.Type: ApplicationFiled: May 27, 2011Publication date: November 29, 2012Inventors: Michael Francis Dube, William Coleman
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Patent number: 8269036Abstract: Provided are processes for producing an oxalate by coupling of CO in the presence of a nitrite, wherein two or more reaction zones in series are used, and at least a portion of the oxalate as reaction product is separated between the reaction zones, and/or the nitrite is fed stagewise. The processes described herein can effectively enhance the selectivity to the oxalate and the single-pass conversion of the feedstock.Type: GrantFiled: December 18, 2009Date of Patent: September 18, 2012Assignees: China Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology SinopecInventors: Juntao Liu, Zhiyan Zhu, Wanmin Wang, Lei Li
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Patent number: 8262749Abstract: Reacting an alkylene carbonate, such as ethylene carbonate, with dimer acid in the presence of a catalyst, such as a tertiary amine catalyst, gives a dimer acid diester having essentially no sulfur, and thus may be added to ultra-low sulfur diesel fuel downstream of a refinery. The diester enhances the lubricity properties of hydrocarbon fuels, increases their service life and fuel efficiency. The manufacturing process time may be decreased significantly compared with a process using ethylene glycol instead of ethylene carbonate, and much less ethylene glycol by-product results.Type: GrantFiled: September 3, 2010Date of Patent: September 11, 2012Assignee: Baker Hughes IncorporatedInventors: Viet Q. Hoang, Philip L. Leung, Gordon T. Rivers
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Publication number: 20120178960Abstract: An process to obtain a mixture of lower carboxylic acid mono, di and triesters, from raw glycerin, a by-product of the process to obtain biodiesel, a transesterification of vegetable raw material with lower alcohols is described. Also described is a process to obtain triacetin or a mixture of mono-, di- and triacetin from that raw glycerin, without prior purification.Type: ApplicationFiled: June 29, 2010Publication date: July 12, 2012Applicant: RHODIA POLIAMIDA E ESPECIALIDADES LTDAInventors: Maria Cristina Schuch, Aires Lacovone
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Publication number: 20120116099Abstract: The present invention relates to a method of continuously conveying a liquid which is used as starting material in a chemical reaction by means of a displacement pump having physically separate forward-transport valves and a liquid-filled bidirectional flow line between displacement pump and forward-transport valves, wherein an auxiliary liquid which is a product or a starting material of the chemical reaction and has a melting point which is below the melting point or below the saturation temperature of the liquid to be conveyed is present in the bidirectional flow line. The present invention additionally provides for the use of a product formed by hydrogenation of an aromatic compound as auxiliary liquid for conveying an aromatic compound and also the use of an alcohol or an ester derived from alcohol and carboxylic acid as auxiliary liquid for conveying carboxylic acids or carboxylic acid derivatives.Type: ApplicationFiled: July 6, 2010Publication date: May 10, 2012Applicant: BASF SEInventors: Joachim Pfeffinger, Willi Gilcher, Juergen Morell
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Publication number: 20120108834Abstract: The present invention is generally directed to triester-based lubricant compositions. The present invention is also directed to methods of making these and other similar lubricant compositions. In some embodiments, the methods for making such triester-based lubricants utilize a biomass precursor comprising mono-unsaturated fatty acids, wherein such mono-unsaturated fatty acids are reduced to mono-unsaturated fatty alcohols en route to the synthesis of triester species for use as/in the triester-based lubricant compositions. Subsequent steps in such synthesis may employ carboxylic acids and/or acyl halides/anhydrides derived from biomass and/or Fischer-Tropsch synthesis.Type: ApplicationFiled: January 5, 2012Publication date: May 3, 2012Applicant: Chevron U.S.A. INC.Inventors: Saleh A. Elomari, Stephen Joseph Miller, Zhen Zhou
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Publication number: 20110275851Abstract: A method of producing an alkyl ester of a carboxylic acid is provided, the method comprising: adding an alkanol and a mineral acid to a carboxylic acid salt to provide a carboxylic acid/alkanol solution and a precipitated mineral acid salt; separating the mineral acid salt from the carboxylic acid/alkanol solution; esterifying the carboxylic acid; and isolating an alkyl ester of the carboxylic acid.Type: ApplicationFiled: December 2, 2010Publication date: November 10, 2011Inventors: Alvaro Orjuela, Abraham Yanez-Mckav, Carl Lira, Dennis Miller
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Patent number: 8053594Abstract: Diester compounds are prepared from imide/dinitrile compounds employing a vapor-phase hydrolysis of dinitrile compounds in the presence of alcohol, more particularly from branched dinitrile compounds, such as methylglutaronitrile or branched dinitrile compounds obtained as by-products in a process for the production of adiponitrile by hydrocyanation of butadiene.Type: GrantFiled: July 5, 2007Date of Patent: November 8, 2011Assignee: Rhodia OperationsInventors: Philippe Leconte, Philippe Marion, Roland Jacquot
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Patent number: 8026386Abstract: The invention provides a method of producing acrylic acid. The method includes contacting fumaric acid with a sufficient amount of ethylene in the presence of a cross-metathesis transformation catalyst to produce about two moles of acrylic acid per mole of fumaric acid. Also provided is an acrylate ester. The method includes contacting fumarate diester with a sufficient amount of ethylene in the presence of a cross-metathesis transformation catalyst to produce about two moles of acrylate ester per mole of fumarate diester. An integrated process for process for producing acrylic acid or acrylate ester is provided which couples bioproduction of fumaric acid with metathesis transformation. An acrylic acid and an acrylate ester production also is provided.Type: GrantFiled: August 8, 2008Date of Patent: September 27, 2011Assignee: Genomatica, Inc.Inventors: Mark J. Burk, Priti Pharkya, Stephen J. Van Dien, Anthony P. Burgard, Christophe H. Schilling
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Publication number: 20110077184Abstract: The present invention is generally directed to methods of making diester-based lubricant compositions, wherein formation of diester species proceeds via direct esterification of epoxide intermediates. In some embodiments, the methods for making such diester-based lubricants utilize a biomass precursor and/or low value (e.g., Fischer-Tropsch (FT) olefins and/or alcohols) so as to produce high value diester-based lubricants. In some embodiments, such diester-based lubricants are derived from FT olefins and fatty acids. The fatty acids can be from a bio-based source (i.e., biomass, renewable source) or can be derived from FT alcohols via oxidation.Type: ApplicationFiled: December 7, 2010Publication date: March 31, 2011Applicant: Chevron U.S.A. Inc.Inventors: Stephen Joseph Miller, Zhen Zhou, Saleh A. Elomari
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Publication number: 20110061292Abstract: Reacting an alkylene carbonate, such as ethylene carbonate, with dimer acid in the presence of a catalyst, such as a tertiary amine catalyst, gives a dimer acid diester having essentially no sulfur, and thus may be added to ultra-low sulfur diesel fuel downstream of a refinery. The diester enhances the lubricity properties of hydrocarbon fuels, increases their service life and fuel efficiency. The manufacturing process time may be decreased significantly compared with a process using ethylene glycol instead of ethylene carbonate, and much less ethylene glycol by-product results.Type: ApplicationFiled: September 3, 2010Publication date: March 17, 2011Applicant: Baker Hughes IncorporationInventors: Viet Q. Hoang, Philip L. Leung, Gordon T. Rivers
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Publication number: 20110040026Abstract: A compound of Formula (1) or a salt thereof: wherein R is H, methyl or ethyl.Type: ApplicationFiled: July 29, 2010Publication date: February 17, 2011Inventors: Owen Roger LOZMAN, Richard Thomas WILLIAMS
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Patent number: 7867959Abstract: The present invention is generally directed to methods of making diester-based lubricant compositions, wherein formation of diester species proceeds via direct esterification of epoxide intermediates. In some embodiments, the methods for making such diester-based lubricants utilize a biomass precursor and/or low value (e.g., Fischer-Tropsch (FT) olefins and/or alcohols) so as to produce high value diester-based lubricants. In some embodiments, such diester-based lubricants are derived from FT olefins and tatty acids. The fatty acids can be from a bio-based source (i.e., biomass, renewable source) or can be derived from FT alcohols via oxidation.Type: GrantFiled: January 31, 2008Date of Patent: January 11, 2011Assignee: Chevron U.S.A. Inc.Inventors: Stephen Joseph Miller, Zhen Zhou, Saleh A. Elomari
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Publication number: 20100314243Abstract: The present invention relates to the isomerization of cis,cis and/or cis,trans muconic acid or esters thereof to trans,trans muconic acid or esters thereof and to the esterification of such muconic acids.Type: ApplicationFiled: June 16, 2010Publication date: December 16, 2010Applicant: Draths CorporationInventors: John W. Frost, Adeline Miermont, Dirk Schweitzer, Vu Bui
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Publication number: 20100311625Abstract: The present invention is generally directed to triester-based lubricant compositions. The present invention is also directed to methods of making these and other similar lubricant compositions. In some embodiments, the methods for making such triester-based lubricants utilize a biomass precursor comprising mono-unsaturated fatty acids, wherein such mono-unsaturated fatty acids are reduced to mono-unsaturated fatty alcohols en route to the synthesis of triester species for use as/in the triester-based lubricant compositions. Subsequent steps in such synthesis may employ carboxylic acids and/or acyl halides/anhydrides derived from biomass and/or Fischer-Tropsch synthesis.Type: ApplicationFiled: June 8, 2009Publication date: December 9, 2010Applicant: Chevron U.S.A. Inc.Inventors: Saleh A. Elomari, Stephen Joseph Miller, Zhen Zhou
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Publication number: 20100305354Abstract: The invention relates to a process for the synthesis of diacids or diesters of general formula ROOC—(CH2)x—COOR, in which n is an integer between 5 and 14, R is either H or an alkyl radical of 1 to 4 carbon atoms, from natural long-chain monounsaturated fatty acids or esters including at least 10 adjacent carbon atoms per molecule of the general formula CH3—(CH2)n—CHR1—CH2—CH?CH—(CH2)p—COOR, in which R is H or an alkyl radical with 1 to 4 carbon atoms, R1 is either H or OH, and n and p, which are equal or different and are indices between 2 and 11.Type: ApplicationFiled: June 11, 2008Publication date: December 2, 2010Applicant: ARKEMA FRANCEInventor: Jean-Luc Dubois
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Publication number: 20100292328Abstract: The invention relates to the use of esters of 2-ethylbutanol with C4-36 carboxylic acids or C4-36 dicarboxylic acids in cosmetics and/or pharmaceutical preparations. The compounds are characterised by a particularly light feeling.Type: ApplicationFiled: August 9, 2007Publication date: November 18, 2010Applicant: Cognis IP Management GmbHInventors: Stefanie Althaus, Markus Dierker, Daniela Prinz, Catherine Weichold
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Publication number: 20100292121Abstract: Novel dicarboxylic acid diesters and admixture thereof have the formula (I): R1—OOC-A-COOR2??(I) and are advantageously prepared from fusel oils; these are particularly suited for formulation into useful solvent, cosolvent, stripping, crystallization inhibiting, cleaning and degreasing compositions.Type: ApplicationFiled: October 21, 2008Publication date: November 18, 2010Inventors: Roland Jacquot, Philippe Marion, Jean-Emille Zanetto, Olivier Jentzer, Sophie Deroo, Dominique Labarre
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Publication number: 20100286438Abstract: An improvement in the production of methylidene malonates is attained by use of specific reaction phase and/or separation phase polymerization inhibitors and combinations thereof.Type: ApplicationFiled: May 6, 2010Publication date: November 11, 2010Inventors: Bernard M. Malofsky, Chris Mariotti
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Publication number: 20100274044Abstract: A process for making menthyl glutarate is disclosed. The process comprises reacting excess glutaric acid and menthol to produce a mixture comprising monomenthyl glutarate (MMG) and dimenthyl glutarate (DMG), wherein the weight ratio of glutaric acid to menthol is from 1.0 to 1.6 and the resulting mixture comprises from 60 to 70 wt. % of MMG and from 30 to 40 wt. % of DMG.Type: ApplicationFiled: April 22, 2009Publication date: October 28, 2010Inventors: Mark B. Erman, Joe W. Snow
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Patent number: 7820849Abstract: A process is provided, in particular a continuous process for the carbonylation of butadiene by reacting the butadiene with carbon monoxide and a hydroxyl group-containing compound in the presence of a palladium catalyst system in a reaction zone to form a reaction mixture, said catalyst system comprising (a) a source of palladium cations, (b) a mono-, bi- or multidentate phosphine ligand, containing at least one phosphorus atom which is directly bound to two or three aliphatic carbon atoms, as process ligand to produce a palladium-phosphine ligand complex catalyst, and (c) a source of anions, said process ligand (b) containing the moiety shown in formula (I), wherein A1 and A2 each represent an aliphatic carbon atom which can be connected to one or more aliphatic or aromatic carbon atoms or both A1 and A2 are part of an at least 5-membered ring including the phosphorus atom, and X represents an aliphatic or aromatic carbon atom which can be connected to one or more aliphatic or aromatic carbon atoms or XType: GrantFiled: June 28, 2004Date of Patent: October 26, 2010Assignee: DSM IP Assets B.V.Inventors: Otto Erik Sielcken, Imre Toth, Henricus Anna Christiaan Baur
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Patent number: 7816554Abstract: A process for the production of carboxylic acid esters by reaction of a carboxylic acid selected from mono-, di- and polycarboxylic acids, with an alcohol in the presence of water of solution comprising the steps of: (a) providing a solution comprising the carboxylic acid and the water of solution; (b) reacting the solution of the carboxylic acid in an esterification zone with an alcohol to form an ester and water of esterification; (c) removing the water of solution and the water of esterification; and (d) recovering the ester.Type: GrantFiled: October 18, 2004Date of Patent: October 19, 2010Assignee: Davy Process Technology LimitedInventors: David M. Sutton, Graham Reed, Andrew G. Hiles
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Publication number: 20100160671Abstract: Provided are processes for producing an oxalate by coupling of CO in the presence of a nitrite, wherein two or more reaction zones in series are used, and at least a portion of the oxalate as reaction product is separated between the reaction zones, and/or the nitrite is fed stagewise. The processes described herein can effectively enhance the selectivity to the oxalate and the single-pass conversion of the feedstock.Type: ApplicationFiled: December 18, 2009Publication date: June 24, 2010Inventors: Juntao LIU, Zhiyan Zhu, Wanmin Wang, Lei Li
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Patent number: 7695557Abstract: A coalescent composition for coating compositions such as paints, adhesives, and coatings comprising a blend of diesters, the blend comprising adducts of alcohol and diacids, the alcohol selected from the group consisting of ethyl, propyl, isopropyl alcohol and mixtures thereof, and the diacids selected from the group consisting of a blend of adipic, glutaric and succinic diacids (“AGS”) and a blend of adipic, methylglutaric, and ethylsuccinic diacids (“MGA”), and paint, adhesive, and coating compositions comprising such coalescent compositions are disclosed.Type: GrantFiled: January 30, 2009Date of Patent: April 13, 2010Assignee: Rhodia inc.Inventors: Lichang Zhou, Derek Pakenham, Jose Ruiz, Pu Chen, Charles Aymes, Keri Veres, Bernard Koltisko
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Patent number: 7667068Abstract: A process for producing organic acid di- or tri-esters, particularly citric acid tri-esters, with the available acid groups esterified using countercurrent reactive distillation using acid catalysts in a structured packing is described. In the reactive distillation an organic acid di- or tri-ester is formed by chemical reaction and purified to its final state within the single column. Organic acid di- or tri-esters are produced at relatively low cost, with less waste production in by-products of the reaction, and in a less complicated manner than prior processes. Organic acid di- and tri-esters have uses as solvents, as plasticizers and in conversion products.Type: GrantFiled: April 28, 2006Date of Patent: February 23, 2010Assignee: Board of Trustees of Michigan State UniversityInventors: Dennis J. Miller, Navinchandra Asthana, Aspi Kolah, Dung T. Vu, Carl T. Lira
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Publication number: 20100041913Abstract: The invention provides a polycondensation catalyst for producing polyester by an esterification reaction or a transesterification reaction between a dicarboxylic acid or ester-forming derivative thereof and a glycol, wherein the polycondensation catalyst comprises particles of a solid base having on their surfaces either a coat layer of titanic acid in an amount of from 0.1 to 50 parts by weight in terms of TiO2 per 100 parts by weight of the solid base, or an inner coat layer of an oxide of at least one element selected from silicon, aluminum and zirconium or a composite oxide of at least two elements selected from silicon, aluminum and zirconium in an amount of from 1 to 20 parts by weight per 100 parts by weight of the solid base and an outer coat layer of titanic acid in an amount of from 0.Type: ApplicationFiled: June 28, 2006Publication date: February 18, 2010Inventors: Toshikatsu Umaba, Hiromitsu Shimizu, Kenji Mori, Keiichi Tabata
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Publication number: 20090264674Abstract: The system and method for producing diester are provided. The system includes a first distillation unit reacting a dicarboxylic acid with an alcohol to produce a first gaseous mixture, a first cooling unit connected to the first distillation unit and cooling the first gaseous mixture into a first liquid mixture, a second distillation unit connected to the first cooling unit and separating the first liquid mixture into a second gaseous mixture and a second liquid mixture, and a liquid-liquid extraction unit connected to the second distillation unit and separating the second liquid mixture into an aqueous-rich mixture and an organic-rich mixture from which the diester is obtained.Type: ApplicationFiled: April 8, 2009Publication date: October 22, 2009Applicant: NATIONAL TAIWAN UNIVERSITYInventors: Hsiao-Ping HUANG, Cheng-Ching YU, Ming-Jer LEE, Shih-Bo HUNG, I-Kuan LAI
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Publication number: 20090264673Abstract: Process for continuously preparing unsaturated carboxylic anhydrides of the general formula I R—C(O)—O—C(O)—R??(I) in which R is an unsaturated organic radical having 2 to 12 carbon atoms by transanhydridization of an aliphatic carboxylic anhydride with a carboxylic acid of the general formula II R—COOH??(II) in which R is as defined above in a rectification column having an upper, middle and lower region, characterized in that f) an inert boiling oil is initially charged in the bottom of the column, g) the reactants are fed into a reaction region in stoichiometric ratios, h) the carboxylic acid formed as the by-product is withdrawn at the top of the column, i) the unconverted reactants are recycled into the reaction region and j) the product of the formula I is obtained via a side draw, preferably between the middle and lower column region.Type: ApplicationFiled: March 14, 2007Publication date: October 22, 2009Applicant: Evonik Roehm GmbHInventors: Dirk Broell, Hermann Siegert
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Patent number: 7582792Abstract: Disclosed is a carbonylation process for the production of carboxylic acids, carboxylic acid esters and/or carboxylic acid anhydrides wherein a carbonylation feedstock compound selected from one or more organic oxygenates such as alcohols, ethers, and esters is contacted with carbon monoxide in the presence of a carbonylation catalyst and one or more onium compounds. The carbonylation process differs from known carbonylation processes in that a halide compound such as a hydrogen halide, typically hydrogen iodide, and/or alkyl halide, typically methyl iodide, extraneous or exogenous to the carbonylation process is not fed or supplied separately to the process.Type: GrantFiled: June 15, 2006Date of Patent: September 1, 2009Assignee: Eastman Chemical CompanyInventors: Joseph Robert Zoeller, Mary Kathleen Moore, Andrew James Vetter
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Publication number: 20080299479Abstract: Stabilizer compositions are provided having carboxylic acid groups. By esterifying some of the available carboxylic acid groups, the carboxylic acid number of the stabilizer may be adjusted. Such stabilizers may be utilized, in embodiments, for forming toner compositions.Type: ApplicationFiled: May 31, 2007Publication date: December 4, 2008Inventors: Yuhua Tong, Chieh-Min Cheng
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Publication number: 20080194444Abstract: The present invention is generally directed to diester-based lubricant compositions. The present invention is also directed to methods of making these and other similar lubricant compositions. In some embodiments, the methods for making such diester-based lubricants utilize a biomass precursor and/or low value Fischer-Tropsch (FT) olefins and/or alcohols so as to produce high value diester-based lubricants. In some embodiments, such diester-based lubricants are derived from FT olefins and fatty acids. The fatty acids can be from a bio-based source (i.e., biomass, renewable source) or can be derived from FT alcohols via oxidation.Type: ApplicationFiled: February 12, 2007Publication date: August 14, 2008Applicant: Chevron U.S.A. Inc.Inventors: Stephen Joseph Miller, Saleh A. Elomari
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Patent number: 7399880Abstract: Process for esterification of farnesol in an initial mixture comprising alpha-bisabolol, farnesol and optionally other components, with the following steps: 1. Preparation or production of the initial mixture, 2.Type: GrantFiled: October 27, 2006Date of Patent: July 15, 2008Assignee: Symrise GmbH & Co. KGInventors: Marcus Betzer, Walter Kuhn, Burghard Wilkening, Dietmar Schatkowski, Oskar Koch
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Patent number: 7393972Abstract: The invention provides a process for preparing amino acid esters and/or their acid addition salts from monomeric or polymeric amino acids, peptides, proteins and alcohols, which comprises carrying out the reaction in supercritical alcohols, preferably at pressures and temperatures which are at least 5% above the critical parameters, the alcohols serving both as the solvent and as reactants.Type: GrantFiled: February 18, 2005Date of Patent: July 1, 2008Assignee: Goldschmidt GmbHInventors: Matthias Pascaly, Dietrich Maaβ, Dieter Buβ, Burghard Grüning, Gunter Latoschinski, Tim Pöpken, Christian Weitemeyer
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Patent number: 7335799Abstract: The present invention relates to novel hydroxyl compounds, compositions comprising hydroxyl compounds, and methods useful for treating and preventing a variety of diseases and conditions such as, but not limited to aging, Alzheimer's Disease, cancer, cardiovascular disease, diabetic nephropathy, diabetic retinopathy, a disorder of glucose metabolism, dyslipidemia, dyslipoproteinemia, hypertension, impotence, inflammation, insulin resistance, lipid elimination in bile, obesity, oxysterol elimination in bile, pancreatitis, pancreatitius, Parkinson's disease, a peroxisome proliferator activated receptor-associated disorder, phospholipid elimination in bile, renal disease, septicemia, metabolic syndrome disorders (e.g., Syndrome X), thrombotic disorder. Compounds and methods of the invention can also be used to modulate C reactive protein or enhance bile production in a patient.Type: GrantFiled: December 23, 2003Date of Patent: February 26, 2008Assignee: Esperion Therapeutics, Inc.Inventors: Jean-Louis Henri Dasseux, Carmen Daniela Oniciu
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Patent number: 7060840Abstract: The present invention relates to methods for the synthesis of chiral non-racemic products, e.g., enantiomerically-enriched hemiesters, from prochiral starting materials, e.g., meso anhydrides. The present invention also relates to catalysts for the aforementioned methods, and methods for synthesizing these catalysts.Type: GrantFiled: February 13, 2003Date of Patent: June 13, 2006Assignee: Brandeis UniversityInventors: Li Deng, Yonggang Chen, Shikai Tian
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Patent number: 7053236Abstract: The present invention relates to methods for the synthesis of chiral non-racemic products, e.g., enantiomerically-enriched hemiesters, from prochiral and meso starting materials, e.g., prochiral and meso cyclic anhydrides. The present invention also relates to catalysts for the aforementioned methods, and methods for synthesizing these catalysts.Type: GrantFiled: June 12, 2003Date of Patent: May 30, 2006Assignee: Brandeis UniversityInventors: Li Deng, Yonggang Chen, Shikai Tian
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Patent number: 6982346Abstract: A process of making D-panthenyl triacetate which includes reacting D-panthenol with acetic anhydride in the presence of the catalyst polymer bound dimethylaminopyridine to form an exothermic mixture. The so-produced acetic acid, and the catalyst are removed from the exothermic mixture which is then neutralized with sodium hydroxide. Sodium acetate in the form of a solid is removed by filtration. The D-panthenyl triacetate is useful in cosmetic compositions.Type: GrantFiled: July 1, 2003Date of Patent: January 3, 2006Assignee: ISP Investments Inc.Inventors: Jon Kirk Smith, Zongzheng Liu, Murugappa Vedachalam, David Compton
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Patent number: 6916950Abstract: Carboxylic esters are prepared by a process, which comprises reacting dicarboxylic or polycarboxylic acids or their anhydrides with alcohols in a liquid medium with the concomitant removal of water formed by the esterification reaction by azeotropic distillation together with the alcohol in the medium, wherein the amount of liquid removed from the reaction medium by azeotropic distillation is replaced in whole or in part with the alcohol.Type: GrantFiled: September 5, 2001Date of Patent: July 12, 2005Assignee: Oxeno Olefinchemie GmbHInventors: Dietmar Gubisch, Uwe Ernst, Wilfried Bueschken
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Patent number: 6881858Abstract: Asymmetric (meth)acrylate crosslinking agents may be prepared by reacting a hydroxyacrylate with methacrylic anhydride to give a crosslinking agent with acrylic and methacrylic groups. Asymmetric (meth)acrylate crosslinking agents can be employed in the production of superabsorbers and thickening agents.Type: GrantFiled: January 11, 2002Date of Patent: April 19, 2005Assignee: ROEHM GmbH & Co. KGInventor: Werner Siol
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Patent number: 6849758Abstract: Mixtures containing monomers having at least one ethylenically unsaturated group are chemically and/or physically treated in the presence of the reaction products of alkylsuccinic anhydrides and stable N-oxyl radicals having a hydroxyl group.Type: GrantFiled: October 2, 2000Date of Patent: February 1, 2005Assignee: BASF AktiengesellschaftInventors: Klaus Joachim Müller-Engel, Gerhard Nestler, Jürgen Schröder