The Five-membered Hetero Ring, Except For The =x To The Ring, Is Unsubstituted Or Hydrocarbyl Substituted Only Patents (Class 549/230)
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Patent number: 7825285Abstract: A process and an apparatus for the separation of a homogeneous catalyst solution from crude monoethylene glycol (MEG) and for purifying MEG is disclosed. The process comprises separating catalyst solution by evaporating crude MEG and feeding crude MEG to a rectification section, a stripping section, and thence to a pasteurisation section, each section operated at subatmospheric pressure of 0.5×105 Nm?2 or less, the rectification and pasteurisation sections being at pressure less than that of the catalyst separation section, wherein the process provides a pressure differential across the catalyst separation and rectification sections and wherein vapour phase crude MEG from the catalyst separation section is fed as substantially vapour phase feed to the rectification section.Type: GrantFiled: June 12, 2007Date of Patent: November 2, 2010Assignee: Shell Oil CompanyInventors: Roel Guillaume Hubertus Leonardus Bastings, Anton Pieter Westerink
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Publication number: 20100267969Abstract: The present invention provides rhenium-promoted epoxidation catalysts based upon shaped porous bodies comprising a minimized percentage of their total pore volume being present in pores having diameters of less than one micron, and a surface area of at least about 1.0 m2/g. Processes of making the catalysts and using them in epoxidation processes are also provided.Type: ApplicationFiled: April 14, 2010Publication date: October 21, 2010Applicant: DOW TECHNOLOGY INVESTMENTS LLCInventors: Albert C. Liu, Hwaili Soo
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Publication number: 20100249436Abstract: The present invention is to provide a novel production process capable of selectively producing various kinds of carbonate compounds without any inhibition in high yields without using phosgene and without producing hydrogen chloride as a by-product. The present invention relates to a process for producing a compound having a carbonate bond by reacting a compound (1) with a compound having one OH group or a compound having two or more OH groups in the presence of a halogen salt. In the formula (1) shown below, X1 to X6 each represents a hydrogen atom or a halogen atom, at least one of X1 to X3 is a halogen atom, and at least one of X4 to X6 is a halogen atom.Type: ApplicationFiled: June 2, 2010Publication date: September 30, 2010Inventors: Hidekazu OKAMOTO, Kouhei Tajima, Takashi Okazoe
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Patent number: 7790908Abstract: The present invention relates to a process for preparing highly pure glyceryl carbonate by transesterifying dialkyl carbonates or cyclic carbonates in the presence of a basic catalyst.Type: GrantFiled: October 11, 2006Date of Patent: September 7, 2010Assignee: Evonik Roehm GmbHInventors: Bardo Schmitt, Joachim Knebel, Maik Caspari
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Publication number: 20100176355Abstract: This invention publishes new usages of kinds of carbonic ester compounds. The new usage described in this invention is related to the application of carbonic ester compounds in the preparation of solvents for chemiluminescent systems. This invention also provides luminescent compositions, luminescent liquids and oxidized liquids that contain carbonic ester compounds. Chemiluminescent compositions containing carbonic ester compounds can decrease reaction pressure effectively, facilitate reaction balance heading to luminescence reaction, generate larger luminescent output without adding catalyst, decrease the dosage of catalyst or not need adding catalyst, decrease influences of over-high output at the reaction start caused by catalyst on whole luminescent time, and ensure stable light output from luminescent compositions. Carbonic ester compounds, especially long carbon chain carbonic ester, have the characters of non-toxic and high flash point, and have suitable solubility on ordinary bis oxalate ester.Type: ApplicationFiled: June 4, 2008Publication date: July 15, 2010Inventor: Chaoyang Jin
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Publication number: 20100130752Abstract: A process for the production of cyclic carbonates comprising contacting an epoxide with carbon dioxide in the presence of a dimeric aluminium(salen) catalyst, and a co-catalyst capable of supplying Y?, where Y is selected from Cl, Br and I, where the dimeric aluminium(salen) catalyst is of formula I:Type: ApplicationFiled: April 25, 2008Publication date: May 27, 2010Applicant: UNIVERSITY OF NEWCASTLE UPON TYNEInventor: Michael North
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Publication number: 20100130751Abstract: The invention relates to a process for preparing an 1,2-alkylene carbonate comprising: i) contacting carbon dioxide, an 1,2-alkylene oxide and a carbonation catalyst in a reactor to produce a crude reactor effluent containing carbon dioxide, light components, 1,2-alkylene carbonate and catalyst; ii) separating carbon dioxide and light components from the crude reactor effluent to form a bottoms stream containing 1,2-alkylene carbonate and catalyst; iii) distilling the bottoms stream formed in step (ii) to form a first distillation overhead stream containing 1,2-alkylene carbonate and a first distillation bottoms stream containing catalyst, and recycling at least part of the first distillation bottoms stream to the reactor; and iv) distilling the first distillation overhead stream to form a second distillation overhead stream and a second distillation bottoms stream containing 1,2-alkylene carbonate, and recycling at least part of the second distillation overhead stream to the reactor.Type: ApplicationFiled: April 17, 2008Publication date: May 27, 2010Inventors: Timothy Michael Nisbet, Garo Garbis Vaporciyan
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Publication number: 20100121078Abstract: The invention relates to a process for the preparation of an alkanediol and a dialkyl carbonate comprising: (a) reacting an alkylene carbonate and an alkanol at a temperature of from 10 to 200° C., at a pressure of from 5×104 to 5×106 N/m2 and in the absence of a transesterification catalyst, to obtain a mixture comprising hydroxyalkyl alkyl carbonate, alkanol and alkylene carbonate; (b) contacting the mixture comprising hydroxyalkyl alkyl carbonate, alkanol and alkylene carbonate with a transesterification catalyst at a temperature of from 10 to 200° C. and at a pressure of from 5×104 to 5×106 N/m2, to obtain a mixture comprising the alkanediol and the dialkyl carbonate; and (c) recovering the alkanediol and the dialkyl carbonate from the mixture comprising the alkanediol and the dialkyl carbonate.Type: ApplicationFiled: May 4, 2009Publication date: May 13, 2010Inventors: Cyrille Paul Allais, Minne Boelens, Evert Van Der Heide
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Patent number: 7674919Abstract: A process for the preparation of an alkylene carbonate, said process comprising contacting the corresponding alkylene oxide with carbon dioxide in the presence of water and in the presence of a catalytic composition comprising an organic base neutralized with a hydrogen halide, wherein the organic base comprises a carbon-based compound comprising one or more nitrogen atoms with at least one free electron pair and/or one or more phosphorous atoms with at least one free electron pair and wherein the organic base has a pKa greater than 8.Type: GrantFiled: September 14, 2007Date of Patent: March 9, 2010Assignee: Shell Oil CompanyInventors: Dirk Michiel Boele, Henricus Petrus Bernardus Duijghuisen, Eugene Marie Godfried Andre Van Kruchten, Jan Herman Hendrik Meurs
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Publication number: 20100048882Abstract: Novel analogues and derivatives of novobiocin are provided, including compounds having modifications to the amide side chain, coumarin ring, and sugar moieties. The compounds of the present invention are useful as heat shock protein 90 inhibitors, and may be used as anticancer and neuroprotective agents.Type: ApplicationFiled: October 1, 2009Publication date: February 25, 2010Applicant: UNIVERSITY OF KANSASInventors: Brian S. Blagg, Len Neckers, Xiao Ming Yu
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Publication number: 20100048918Abstract: Provided is a method of manufacturing vinylethylene carbonate. The method includes synthesizing vinylethylene carbonate (VEC) by reaction of 3,4-dihydroxy-1-butene (3,4-DHB) and dialkyl carbonate using a base catalyst, and refining the VEC.Type: ApplicationFiled: January 16, 2009Publication date: February 25, 2010Inventors: In-Soo Yeo, Byung-Won Woo, Seoung-Woo Yoon, Joo-Ho Lee, Soon-Hong Park, Nak-Jook Jang
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Publication number: 20100036137Abstract: An aqueous process for preparing alkylene carbonates from alkenes and carbon dioxide is described herein. The process comprises the reaction of alkenes with a bromine source, a base and carbon dioxide. The aqueous process can be rendered catalytic by using an oxidant capable of in situ conversion of bromide into bromine.Type: ApplicationFiled: September 21, 2007Publication date: February 11, 2010Inventors: Chao-Jun Li, Nicolas Dara Eghbali
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Publication number: 20090286998Abstract: The invention provides a reaction system for the production of an alkylene carbonate and/or an alkylene glycol comprising: an epoxidation zone containing an epoxidation catalyst located within an epoxidation reactor; a carboxylation zone containing an iodide-containing carboxylation catalyst located within an alkylene oxide absorber; and one or more purification zones containing a purification absorbent capable of reducing the quantity of iodide-containing impurities in a feed comprising a recycle gas, which purification zones are located upstream from the epoxidation zone; and a process for the production of an alkylene carbonate and/or an alkylene glycol.Type: ApplicationFiled: May 13, 2009Publication date: November 19, 2009Inventors: Wayne Errol EVANS, Marek MATUSZ, Eugene Marie Godfried Andre VAN KRUCHTEN, Martin Lysle HESS
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Publication number: 20090234141Abstract: The present invention relates to the industrial production of vinylene carbonate (VC) by elimination of hydrogen chloride from chloroethylene glycol carbonate (CGC) with tertiary amines in the absence of relatively large amounts of additional solvent.Type: ApplicationFiled: May 4, 2006Publication date: September 17, 2009Inventors: Reinhard Langer, Anke Beckmann, Paul Wagner, Heinrich Grzinia, Marielouise Schneider, Ulrich Notheis, Lars Rodefeld, Nikolaus Müller
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Patent number: 7585995Abstract: A continuous method of producing propylenecarbonate includes carboxylation of propylene oxide with carbon dioxide in presence of phthalocyanine catalyst on an inert carrier, using as the phthalocyanine catalyst at least one catalyst selected from the group consisting of not-substituted, methyl, ethyl, butyl, and tret butyl-substituted phthalocyanines of metals, including those containing counterions, and using as the carrier a hydrophobic carrier.Type: GrantFiled: September 21, 2006Date of Patent: September 8, 2009Assignee: U.S. Department of EnergyInventors: Vladimir Vasilievich Afanasiev, Nikolai Serafimovich Zefirov, Dmitry Yurievich Zalepugin, Victor Stanislavovich Polyakov, Nataliya Alexandrovna Tilkunova, Larisa Godvigovna Tomilova
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Publication number: 20090176997Abstract: The present invention relates to the industrial production of vinylene carbonate (VC) by eliminating hydrogen chloride from chloroethylene glycol carbonate (CGC) or solid catalysts in the gas phase, the reaction being carried out over a catalyst bed agitated by thorough mixing.Type: ApplicationFiled: May 4, 2006Publication date: July 9, 2009Inventors: Reinhard Langer, Anke Beckmann, Andreas Schulze Tilling, Paul Wagner, Leslaw Mleczko, Sigurd Buchholz
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Publication number: 20090163726Abstract: The present invention relates to a catalyst system for preparing carboxylic acids and/or carboxylic anhydrides which has at least four catalyst layers arranged one on top of another in the reaction tube, the ratio of the bed lengths of the more selective catalyst layers to the bed lengths of the more active catalyst layers being between 1.4 and 2. The present invention further relates to a process for gas phase oxidation in which a gaseous stream which comprises a hydrocarbon and molecular oxygen is passed through a plurality of catalyst layers, the ratio of the bed lengths of the more selective catalyst layers to the bed lengths of the more active catalyst layers being between 1.4 and 2.Type: ApplicationFiled: May 14, 2007Publication date: June 25, 2009Applicant: BASF SEInventors: Hagen Wilmer, Cornelia Dobner, Frank Rosowski, Sebastian Storck, Jürgen Zühlke
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Publication number: 20090131687Abstract: Method for the storage and transport of vinylene carbonate, characterized in that the vinylene carbonate has a stabilizer content of less than 100 ppm and has a purity of 99.9 to 99.99999% and is present in the solid state of aggregation.Type: ApplicationFiled: May 4, 2006Publication date: May 21, 2009Inventor: Reinhard Langer
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Patent number: 7501531Abstract: A process for the preparation of an alkylene carbonate, said process comprising contacting the corresponding alkylene oxide with carbon dioxide in the presence of a metal salt immobilised on a solid support, wherein the metal salt comprises a cation of a metal selected from those in the third period and group 2, the fourth period and groups 2 and 4 to 12, the fifth period and groups 2, 4 to 7, 12 and 14, and the sixth period and groups 2 and 4 to 6 of the periodic table according to IUPAC nomenclature, and an anion selected from anions of inorganic acids and organic acids, and wherein the solid support contains a quaternary ammonium, a quaternary phosphonium, a quaternary arsenonium, a quaternary stibonium, or a ternary sulfonium cation.Type: GrantFiled: August 2, 2007Date of Patent: March 10, 2009Assignee: Shell Oil CompanyInventors: Eugene Marie Godfried Andre Van Kruchten, Hendrik Stichter
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Publication number: 20090054422Abstract: There is provided compounds of formula I, wherein R1, R2, R3, R41 to R46, X, Y and Z have meanings given in the description, which compounds are useful in the prophylaxis and in the treatment of arrhythmias, in particular atrial and ventricular arrhythmias.Type: ApplicationFiled: June 12, 2006Publication date: February 26, 2009Applicant: ASTRAZENECA ABInventors: Annika Bjore, David Cladingboel, Gareth Ensor, Adam Herring, Johan Kajanus, Robert Lundqvist, Christina Olsson, Carl-Gustav Sigfridsson, Gert Strandlund
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Patent number: 7488835Abstract: A process for the catalytic carboxylation of alkylene oxides with carbon dioxide, in the presence of a catalyst composition and water, wherein the catalyst composition comprises an alkali metal halide and a macrocyclic chelating compound.Type: GrantFiled: July 31, 2006Date of Patent: February 10, 2009Assignee: Shell Oil CompanyInventors: Eugene Marie Godfried Andre Van Kruchten, Hendrik Stichter, Johannes Theodorus Gertruda Wijenberg
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Publication number: 20090023936Abstract: The present invention relates to the industrial purification of vinylene carbonate (VC). It was found that it is advantageous to subject the VC to be purified, before the purifying distillation, to a simple thermal treatment with organic compounds which have amidic nitrogen-hydrogen bonds.Type: ApplicationFiled: May 4, 2006Publication date: January 22, 2009Inventors: Reinhard Langer, Paul Wagner, Heinrich Grzinia
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Patent number: 7456299Abstract: An alkylene carbonate is produced by the reaction of an alkylene oxide with carbon dioxide in the presence of a phosphonium compound as catalyst in a process in which (a) the alkylene oxide, carbon dioxide and the phosphonium catalyst are continuously introduced into a reaction zone from which a product stream containing alkylene carbonate and catalyst is withdrawn, (b) alkylene carbonate and a mixture of alkylene carbonate and phosphonium catalyst are separated from the product stream, (c) the alkylene carbonate, separated in step (b), is recovered as product, and (d) the mixture of alkylene carbonate and phosphonium catalyst is continuously recycled to the reaction zone. The alkylene carbonate thus produced is suitably reacted with an alkanol to produce an alkane diol and a dialkyl carbonate.Type: GrantFiled: February 22, 2007Date of Patent: November 25, 2008Assignee: Shell Oil CompanyInventors: Evert Van Der Heide, Gerardus Martinus Maria Van Kessel, Timothy Michael Nisbet, Garo Garbis Vaporciyan
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Patent number: 7354771Abstract: The absolute configuration of a chiral compound is determined by (i) coordinating the chiral compound to a metalloporphyrin having a carbon chain-crosslinked porphyrin dimer structure in which one of the two porphyrin rings has at least one ethyl or substituent bulkier than ethyl at at least one of the second peripheral carbon atoms from the carbon atom at the carbon chain crosslink site, and (ii) analyzing the resultant coordination compound by circular dichroism spectrophotometry to determine the absolute configuration of the asymmetric carbon based on the sign of the Cotton effect. The chiral compound has an asymmetric carbon bonded to a basic group capable of coordinating to the metal of the other porphyrin ring of the metalloporphyrin dimer or an asymmetric carbon atom adjacent to the carbon atom bonded to the basic group.Type: GrantFiled: December 4, 2000Date of Patent: April 8, 2008Assignee: Japan Science and Technology CorporationInventors: Yoshihisa Inoue, Victor Borovkov, Juha Lintuluoto
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Patent number: 7199252Abstract: Disclosed is a process wherein a first olefin selected from certain ?,?-dihydroxyalkenes and 4-(alkenyl)ethylenecarbonates is reacted with a second olefin reactant to produce an olefin metathesis product. When the first olefin reactant is an optically enriched or enantiomerically pure ?,?-dihydroxyalkene, cross metathesis reactions produce products possessing the same optical purity. The ?,?-dihydroxyalkenes and the 4-(alkenyl)ethylene carbonates may be converted to hydrogenated products, and the 4-(alkenyl)ethylenecarbonates may be decarboxylated to provide the corresponding epoxides. The products of the disclosure may be used as monomers for the preparation of specialty polyesters and as intermediates in the manufacture pharmaceuticals and other chemicals.Type: GrantFiled: August 16, 2005Date of Patent: April 3, 2007Assignee: Eastman Chemical CompanyInventors: Robert Thomas Hembre, Jonathan Michael Penney
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Patent number: 7199253Abstract: A process for producing an alkylene carbonate, which comprises reacting an alkylene oxide with carbon dioxide in the presence of a catalyst in a reactor to obtain a reaction mixture containing an alkylene carbonate, the reactor communicating with a process-side channel of a heat exchanger through a piping to form a circulation circuit, wherein the process is characterized in that it further comprises, during or after the reaction, flowing a process liquid through the circulation circuit including the reactor and the process-side channel of the heat exchanger while flowing a heat exchange medium having a temperature of from 140° C. to 200° C. through the heat exchange-side channel of the heat exchanger, thereby maintaining the inner temperature of the process-side channel at 135° C. to 200° C.Type: GrantFiled: May 28, 2004Date of Patent: April 3, 2007Assignee: Asahi Kasei Chemicals CorporationInventors: Hiroshige Okamoto, Ken Someya
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Patent number: 7112633Abstract: The invention relates to a process for the preparation of compound(s) comprising at least one acrylate or methacrylate group, at least one linear carbonate group and at least one 5-membered cyclic carbonate group. The process comprises (A) a selective ring-opening step and (B) a (meth)acrylation step. The process is environment-friendly and compounds obtained are usable in radiation curable compositions, for example in radiation-curable inks.Type: GrantFiled: August 5, 2002Date of Patent: September 26, 2006Assignee: Surface Specialties, S.A.Inventor: Vincent Stone
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Patent number: 7078539Abstract: The color of organic carbonate such as ethylene carbonate or propylene carbonate is substantially improved by ultraviolet irradiation.Type: GrantFiled: July 1, 2003Date of Patent: July 18, 2006Assignee: Lyondell Chemical Technology, L.P.Inventors: Paul E. Galick, Jude T. Ruszkay
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Patent number: 7078432Abstract: A process for the preparation of 14?-hydroxy-baccatin III-1,14-carbonate useful for the preparation of novel taxane derivatives with antitumor activity.Type: GrantFiled: July 18, 2002Date of Patent: July 18, 2006Assignee: Indena S.p.A.Inventors: Ezio Bombardelli, Gabriele Fontana, Maria Luisa Gelmi, Donato Pocar
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Patent number: 7005496Abstract: A method for producing trimethylene carbonate poly(trimethylene carbonate which comprises (a) introducing liquid poly(trimethylene carbonate) and an optional catalyst into a wiped film evaporator reactor under a vacuum about 15 kPa or less, said reactor having walls heated to at least about 230° C. and an internal condenser heated to a temperature above the boiling point of trimethylene carbonate, (b)spreading the poly(trimethylene carbonate) into a thin film and allowing it to flow down the interior surface of the heated walls, (c) depolymerizing the poly(trimethylene carbonate) to form trimethylene carbonate which is driven to the internal condenser and residue poly(trimethylene carbonate) which continues down the reactor, and (d) collecting the trimethylene carbonate in a cooled distillate receiver.Type: GrantFiled: July 9, 2004Date of Patent: February 28, 2006Assignee: Shell Oil CompanyInventors: Wyndham Henry Boon, David Eric Gwyn, Thomas Clayton Forschner, Laurel Arden Gingrich
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Patent number: 6933394Abstract: The present invention provides an alkylene-carbonate synthesis catalyst comprising a compound insoluble to one phase containing alkylene carbonate produced when the alkylene oxide and carbon dioxide are reacted with the catalyst and soluble to the other phase substantially free of alkylene carbonate. The catalyst allows alkylene carbonate to be produced with high yield and selectivity and be readily collected. The catalyst also facilitates repeated or continuous reaction process in a cost-effective manner. The present invention also provides an apparatus for producing alkylene carbonate using the catalyst.Type: GrantFiled: March 6, 2003Date of Patent: August 23, 2005Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Toshiyasu Sakakura, Hiroyuki Yasuda
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Patent number: 6861537Abstract: The synthesis of taxol and other tricyclic and tetracyclic taxanes.Type: GrantFiled: July 12, 2002Date of Patent: March 1, 2005Assignee: Florida State UniversityInventors: Robert A. Holton, Carmen Somoza, Hyeong Baik Kim, Mitsuru Shindo, Ronald J. Biediger, P. Douglas Boatman, Chase Smith, Feng Liang, Krishna Murthi
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Patent number: 6841667Abstract: The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a stereoisomerically- and/or regioisomerically-enriched product. The present invention also relates to hydrolytic kinetic resolutions of racemic and diastereomeric mixtures of epoxides.Type: GrantFiled: July 7, 2003Date of Patent: January 11, 2005Assignee: President and Fellows of Harvard CollegeInventors: Eric N. Jacobsen, Makoto Tokunaga, Jay F. Larrow
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Publication number: 20040242903Abstract: A catalytic system comprising of Zinc-substituted polyoxometalate, Na12[WZn3(H2O)2(ZnW9O34)2].Type: ApplicationFiled: May 30, 2003Publication date: December 2, 2004Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Manikandan Palanichamy, Sankar Meenakshisundaram
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Patent number: 6800766Abstract: The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a stereoisomerically- and/or regioisomerically-enriched product. The present invention also relates to hydrolytic kinetic resolutions of racemic and diastereomeric mixtures of epoxides.Type: GrantFiled: July 26, 2002Date of Patent: October 5, 2004Assignee: President and Fellows of Harvard CollegeInventors: Eric N. Jacobsen, Makoto Tokunaga, Jay F. Larrow
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Patent number: 6781006Abstract: A method for making a chiral transition metal-ligand catalyst complex that is active in catalyzing stereoselective ring opening reactions includes contacting an asymmetric tetradentate ligand, in an excess of a Brønsted acid, with a salt of a first row transition metal, wherein the acidity of the conjugate acid of the salt is the same as or less than the acidity of the Brønsted acid, under conditions effective to allow formation of the active chiral transition metal-ligand catalyst complex, and forming a solution of the complex in a water-miscible, protic solvent from which the active complex can be precipitated by the addition of water and adding water to the solution to precipitate at least a portion of the complex.Type: GrantFiled: September 17, 2002Date of Patent: August 24, 2004Assignee: Rhodia Pharma Solutions Inc.Inventors: Jay F. Larrow, Karl Hemberger, Hocine Kabir, Philippe Morel
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Patent number: 6703513Abstract: The present invention provides analogues of autoinducer molecules that are derivatized to allow their attachment to other molecules and surfaces. Libraries of the autoinducer analogues are also contemplated. Also provided are methods for using the compounds of the invention to produce compositions, such as immunoconjugates, antibodies and vaccines, which are useful for treating and preventing disease states in a subject. The compositions of the invention are also useful in various assays, including assessing the autoinducer load in a subject.Type: GrantFiled: June 2, 2000Date of Patent: March 9, 2004Assignee: K-Quay Enterprises LLCInventor: Steven C. Quay
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Patent number: 6673212Abstract: Identified herein are inhibitors which may be added to the boiling pot portion of a distillation apparatus prior to or during the distillation of an alkylene carbonate. The inhibitors retard the occurrence of undesirable reactions of the alkylene carbonate with itself and impurities present in the pot, and hence greatly reduce or minimize the formation of undesirable by-products which otherwise tend to reduce overall yields of alkylene carbonate recovered by the distillation process. Higher distillation temperatures at higher pressures over the prior art are possible without attendant losses of significant amounts of recovered alkylene carbonate, which confers heretofore unseen flexibility in alkylene carbonate distillation.Type: GrantFiled: April 22, 2002Date of Patent: January 6, 2004Assignee: Huntsman Petrochemical CorporationInventors: James R. Machac, Jr., Edward T. Marquis, Susan A. Woodrum, Ralph M. DiGuilio, Mike W. McKinney
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Publication number: 20030212280Abstract: An alkylene carbonate such as propylene carbonate is contacted with an alumina or silica solid adsorbent having a surface area of 50-400 m2/g such as basic alumina to remove impurities therefrom and improve color and color stability.Type: ApplicationFiled: May 8, 2002Publication date: November 13, 2003Inventor: Andrew P. Kahn
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Patent number: 6586605Abstract: The invention is a method to purify an alkylene carbonate such as propylene carbonate by contact with at least two solid adsorbents comprising carbon and an inorganic silicon or aluminum oxide. The purification method successfully improves color and color stability while also reducing the amount of catalyst impurity contained in the alkylene carbonate.Type: GrantFiled: January 8, 2003Date of Patent: July 1, 2003Assignee: Arco Chemical Technology, L.P.Inventor: Andrew P. Kahn
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Publication number: 20020179426Abstract: Identified herein are inhibitors which may be added to the boiling pot portion of a distillation apparatus prior to or during the distillation of an alkylene carbonate. The inhibitors retard the occurrence of undesirable reactions of the alkylene carbonate with itself and impurities present in the pot, and hence greatly reduce or minimize the formation of undesirable by-products which otherwise tend to reduce overall yields of alkylene carbonate recovered by the distillation process. Higher distillation temperatures at higher pressures over the prior art are possible without attendant losses of significant amounts of recovered alkylene carbonate, which confers heretofore unseen flexibility in alkylene carbonate distillation.Type: ApplicationFiled: April 22, 2002Publication date: December 5, 2002Applicant: Huntsman Petrochemical CorporationInventors: James R. Machac, Edward T. Marquis, Susan A. Woodrum, Ralph M. DiGuilio, Mike W. McKinney
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Patent number: 6476237Abstract: Provided herein is a process for producing alkylene carbonates of ultra-high purity. According to the present invention, certain stages of traditional distillation of alkylene carbonate distillation are replaced by carbon treatment. Alkylene carbonates produced according to the invention have a color of less than 25 (Pt-Co), and are suitable for uses requiring ultra-pure alkylene carbonates.Type: GrantFiled: February 26, 2002Date of Patent: November 5, 2002Assignee: Huntsman Petrochemical CorporationInventors: James R. Machac, Jr., Ralph M. DiGuilio, John R. Sanderson, Ronald L. Savage
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Publication number: 20020147349Abstract: This invention concerns a process to provide high purity alkylene carbonate though use of multiple distillations wherein the unused fractions are recycled to the reactor. The high purity alkylene carbonate may be further purified by use of carbon to produce electrochromic or photochromic grade alkylene carbonate by reducing its UV absorbance.Type: ApplicationFiled: March 29, 2002Publication date: October 10, 2002Applicant: Huntsman Petrochemical CorporationInventors: James R. Machac, Edward T. Marquis, Ronald L. Savage, Susan A. Woodrum, John R. Sanderson
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Patent number: 6458969Abstract: This invention concerns a process to provide high purity alkylene carbonate though use of multiple distillations wherein the unused fractions are recycled to the reactor. The high purity alkylene carbonate may be further purified by use of carbon to produce electrochromic or photochromic grade alkylene carbonate by reducing its UV absorbance.Type: GrantFiled: March 29, 2002Date of Patent: October 1, 2002Assignee: Huntsman Petrochemical CorporationInventors: James R. Machac, Jr., Edward T. Marquis, Ronald L. Savage, Susan A. Woodrum, John R. Sanderson
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Patent number: 6448414Abstract: The present invention relates to a process for stereoselective or regioselective chemical synthesis which generally comprises reacting a nucleophile and a chiral or prochiral cyclic substrate in the presence of a non-racemic, chiral catalyst to produce a stereoisomerically- and/or regioisomerically-enriched product. The present invention also relates to hydrolytic kinetic resolutions of racemic and diastereomeric mixtures of epoxides.Type: GrantFiled: July 5, 2001Date of Patent: September 10, 2002Assignee: President and Fellows of Harvard CollegeInventors: Eric N. Jacobsen, Makoto Tokunaga, Jay F. Larrow
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Publication number: 20020107407Abstract: The invention relates to a process for the preparation of vinylene carbonate of the formula (I) 1Type: ApplicationFiled: April 4, 2002Publication date: August 8, 2002Applicant: Merck Patent GmbHInventors: Bernhard Seifert, Sylvia Becker, Mark Neuschutz
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Patent number: 6403777Abstract: Transition metal complexes, referred to hereinafter as “metalloligands”, that catalyze the degradation of DNA and the cleavage of RNA at select sites are provided. In one embodiment, the metalloligand has the following structure: wherein R1 is an amino group, i.e. an NH, or an alkylamino group comprising 1 or 2 carbon atoms; wherein R2 is selected from the group consisting of an amino group, a hydroxyl group, i.e., O(H), an alkylamino group comprising 1 or 2 carbon atoms; and an alkylhydroxyl group comprising 1 or 2 carbon atoms; wherein J is a ligand which comprises at least one carbon-containing five-membered or six-membered ring structure; and wherein M is a transition metal ion which is bound via coordinate bonds to R1 and R2.Type: GrantFiled: July 6, 1999Date of Patent: June 11, 2002Assignee: The Ohio State University Research FoundationInventor: James A. Cowan
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Patent number: 6387223Abstract: This invention concerns a process to provide high purity akylene carbonate though use of multiple distillations wherein the unused fractions are recycled to the reactor.Type: GrantFiled: November 7, 2000Date of Patent: May 14, 2002Assignee: Huntsman Petrochemical CorporationInventors: Edward T. Marquis, Mercy Mathai Varghese
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Patent number: 6384240Abstract: This invention concerns a process to provide high purity alkylene carbonate though use of multiple distillations wherein the unused fractions are recycled to the reactor. The high purity alkylene carbonate may be further purified by use of carbon to produce electrochromic or photochromic grade alkylene carbonate by reducing its UV absorbance.Type: GrantFiled: March 9, 2000Date of Patent: May 7, 2002Assignee: Huntsman Petrochemical CorporationInventors: James R. Machac, Jr., Edward T. Marquis, Ronald L. Savage, Susan A. Woodrum, John R. Sanderson
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Publication number: 20020013477Abstract: The present invention relates to a method to prepare alkylene carbonate of the formula (1) 1Type: ApplicationFiled: February 9, 2001Publication date: January 31, 2002Applicant: Korea Institute of Science and TechnologyInventors: Hoon Sik Kim, Jai Jun Kim, Byung Gwon Lee, Hong Gon Kim