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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Publication number: 20010020102Abstract: Ethylene glycol and a carbonate ester are simultaneously produced by reacting ethylene oxide and carbon dioxide to form ethylene carbonate, hydrolyzing of the solution containing the ethylene carbonate to obtain ethylene glycol, purifying ethylene glycol, transesterifying ethylene carbonate and a hydroxyl group-containing compound to form the corresponding carbonate ester and ethylene glycol, separating the carbonate ester and separating ethylene carbonate.Type: ApplicationFiled: January 17, 2001Publication date: September 6, 2001Applicant: MITSUBISHI CHEMICAL CORPORATIONInventor: Kazuki Kawabe
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Publication number: 20010019993Abstract: A catalyst of the formula (1) for the synthesis of alkylene carbonate by reacting alkylene oxide and carbon dioxideType: ApplicationFiled: February 9, 2001Publication date: September 6, 2001Applicant: Korean Institute of Science and TechnologyInventors: Hoon Sik Kim, Byung Gwon Lee, Sang Deuk Lee
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Patent number: 6265592Abstract: A process for the continuous production of 1,3-dioxolan-2-ones such as ethylene carbonate or propylene carbonate by reacting a corresponding oxirane with carbon dioxide in the liquid phase in the presence of a catalyst comprises conducting the reaction in a two-part reactor in whose first part the reaction is taken with backmixing to a conversion of not less than 80% of the oxirane II and in whose second part the reaction is completed under nonbackmixing conditions, and passing the carbon dioxide in countercurrent to the oxirane II in the entire reactor.Type: GrantFiled: October 30, 2000Date of Patent: July 24, 2001Assignee: BASF AktiengesellschaftInventors: Stefan Birnbach, Toni Dockner, Jürgen Mohr, Regina Benfer, Walter Bieg, Jarren Peters, Bernd Ruge, Werner Weinle, Peter Zehner
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Patent number: 6262278Abstract: 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: August 14, 1998Date of Patent: July 17, 2001Assignee: President and Fellows of Harvard CollegeInventors: Eric N. Jacobsen, Makoto Tokunaga, Jay F. Larrow
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Patent number: 6258962Abstract: A process for the synthesis of alkylene carbonates, such as ethylene carbonate, by reacting alkylene oxides with carbon dioxide in the presence of a porous solid support catalyst containing an alkali or alkaline earth metal component.Type: GrantFiled: June 14, 1999Date of Patent: July 10, 2001Assignee: Mobil Oil Corp.Inventors: J. Scott Buchanan, Clarence D. Chang, Robert A. Crane, Lorenzo C. DeCaul, Zhaozhong Jiang, Jose G. Santiesteban, Hye Kyung Cho Timken
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Patent number: 6187972Abstract: A process for producing an alkylene glycol, which is a continuous process for producing an alkylene glycol comprising the following steps (1) to (4), wherein the hydrolysis step (2) is divided into a plurality of stages, and the hydrolysis is carried out so that the water concentration in a reaction stage wherein the conversion of the alkylene carbonate is at least 60%, is from 15 to 30 wt %: (1) a carbonating step of reacting an alkylene oxide with carbon dioxide gas in the presence of a carbonating catalyst to form a reaction solution containing an alkylene carbonate, (2) a hydrolysis step of hydrolyzing the reaction solution obtained in step (1) while releasing carbon dioxide gas, to form an aqueous alkylene glycol solution, (3) a distillation step of distilling the aqueous alkylene glycol solution to obtain at least a dehydrated alkylene glycol and a solution containing the carbonating catalyst, and (4) a recycling step of supplying the solution containing the carbonating catalyst to the carbonating sType: GrantFiled: August 9, 1999Date of Patent: February 13, 2001Assignee: Mitsubishi Chemical CorporationInventors: Kazuki Kawabe, Kouichi Nagata
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Patent number: 6187965Abstract: A method of recovering benzyl alcohol, gamma butyrolactone, or propylene carbonate from an impure effluent stream of an industrial process is provided. The effluent waste stream contains greater than about 10 percent by weight of monomeric units that are reacted to form larger oligomers and polymers. The first step in the recovery process involves polymerizing the monomeric units present in the effluent waste stream under conditions effective to reduce the concentration of monomeric units in the waste stream to less than about 10 weight percent. The waste stream then is fed to a first separation stage where it is separated into (i) a gaseous stream of water, soluble gases, and volatile contaminants and (ii) a suspension comprising the high boiling solvent, semi-volatile materials, and non-volatile contaminants and materials. Then the dewatered, low vapor pressure, high boiling solvent-containing suspension is either distilled or evaporated to separate the high boiling solvent from non-volatile materials.Type: GrantFiled: November 6, 1998Date of Patent: February 13, 2001Assignee: International Business Machines CorporationInventors: Anilkumar C. Bhatt, Jerome J. Wagner
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Patent number: 6160130Abstract: The present invention relates to a method for preparing alkylene carbonate by reacting alkylene oxide with carbon dioxide in the presence of a catalyst comprising:a) at least one alkali metal halide selected from the group consisting of MCl, MBr and MI, whrerin M is alkali metal; andb) at least one manganese halide selected from the group consisting of MnCl.sub.2, MnBr.sub.2 and MnI.sub.2.Type: GrantFiled: January 5, 2000Date of Patent: December 12, 2000Assignee: Korea Institute of Science and TechnologyInventors: Hoon Sik Kim, Jai Jun Kim, Byung Gwon Lee, Young Soo Kwon
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Patent number: 6156909Abstract: The present invention relates to a method for preparing alkylene carbonate by reacting alkylene oxide with carbon dioxide in the presence of a catalyst system comprising:a) at least one selected from the group consisting of PbY.sub.2, InY.sub.3 and their mixture, wherein Y is Cl, Br or I; andb) at least one alkali metal halide selected from the group consisting of MCl, MBr and MI, wherein M is alkali metal.Type: GrantFiled: January 5, 2000Date of Patent: December 5, 2000Assignee: Korea Institute of Science & TechnologyInventors: Hoon Sik Kim, Jai Jun Kim, Sang Deuk Lee, Kun You Park, Hong Gon Kim
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Patent number: 6080897Abstract: Disclosed is a method for producing monoethylene glycol, which is a method for producing ethylene glycol that comprises a carbonation step in which ethylene oxide is allowed to react with carbon dioxide in the presence of a carbonation catalyst thereby effecting formation of a reaction solution containing ethylene carbonate, a hydrolysis step in which the reaction solution is converted into an ethylene glycol aqueous solution by hydrolyzing ethylene carbonate in the reaction solution and a distillation step in which purified ethylene glycol and a catalyst solution containing the carbonation catalyst are obtained from the ethylene glycol aqueous solution by distillation, wherein the improvement resides in that the reaction is carried out in the presence of a carbonation catalyst using a bubble column reactor by supplying ethylene oxide, carbon dioxide and water into the reactor.Type: GrantFiled: March 18, 1999Date of Patent: June 27, 2000Assignee: Mitsubishi Chemical CorporationInventor: Kazuki Kawabe
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Patent number: 6054596Abstract: Reacting a diol (1) with a carbonic ester (2) to produce a cyclic carbonic ester (3) using a salt of a weak acid with an alkaline metal or alkaline earth metal as a catalyst. The diol (1) contains diols having an asymmetric carbon atom. The reaction mixture is neutralized and distilled to obtain a cyclic carbonic ester. Cyclic carbonic esters are produced using an easily accessible and easy to handle reactant, with good yield and under mild and moderate conditions.Type: GrantFiled: March 17, 1999Date of Patent: April 25, 2000Assignee: Daicel Chemical Industries, Ltd.Inventors: Mitsuru Ohno, Shuichi Yamagiwa
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Patent number: 6005063Abstract: Process for the preparation of compound of the formula: ##STR1## wherein R.sub.c represents a residue comprising one or more additional groups of the formula: ##STR2## by heating a compound of the formula (A) ##STR3## at a temperature in the range of from 120 to 220.degree. C. in the presence of hydrogen halide addition salt of tertiary amine;process for the preparation of epoxy compounds starting from the reaction of a polyphenol compound and glycidol; andepoxy resins obtained by this process showing a significantly lower content of intermingled clorine and being substantially free of usual build-up products.Type: GrantFiled: February 6, 1998Date of Patent: December 21, 1999Assignee: Shell Oil CompanyInventors: Johannes Adrianus Van Doorn, Jozef Jacobus Titus Smits, Eric Johannes Vos
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Patent number: 5994597Abstract: A method of recovering solvents from an impure effluent stream of an industrial process. The effluent waste stream contains less than about 10 percent by weight of monomeric units that are reacted to form larger oligomers and polymers. The waste stream contains dissolved polymers, polymeric particles, and the hydrolysis, oxidation and/or other decomposition products of one of the solvents. In one embodiment, the first step involves filtering particulate matter from the waste stream. In another embodiment, the filtering step is omitted. The filtered or unfiltered waste stream is fed to a first separation stage for separation into (i) a gaseous stream of water, soluble gases, and volatile contaminants and (ii) a suspension comprising the solvent, water, semi-volatile and non-volatile contaminants, and photoresist products.Type: GrantFiled: November 6, 1998Date of Patent: November 30, 1999Assignee: International Business Machines CorporationInventors: Anilkumar C. Bhatt, Jerome J. Wagner
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Patent number: 5962699Abstract: A process for decolorizing organic carbonates, for example, cyclic alkylene carbonates, which involves contacting a discolored organic carbonate with hydrogen peroxide, is disclosed.Type: GrantFiled: July 23, 1998Date of Patent: October 5, 1999Assignee: Huntsman Petrochemical CorporationInventors: Edward T. Marquis, Robert E. Baldwin
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Patent number: 5922888Abstract: A process for removing a diol from a cyclic carbonic acid ester containing the diol as an impurity, which comprises bringing a cyclic carbonic acid ester containing a diol as an impurity into contact with a synthetic zeolite in the presence of a chain carbonic acid ester. According to this process, there can be obtained a mixture of a cyclic carbonic acid ester and a chain carbonic acid ester having a very small content of diol, which is suitable as a solvent for electrolytic solution of a condenser, cell or battery.Type: GrantFiled: March 29, 1996Date of Patent: July 13, 1999Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Masahiro Toriida, Akio Hiwara, Keiichi Yokoyama
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Patent number: 5891909Abstract: Amidino and benzamidino compounds, including compounds of the formula: ##STR1## wherein R.sup.1 -R.sup.4, R.sup.6 -R.sup.9, Y, Z, n and m are set forth in the specification, as well as hydrates, solvates or pharmaceutically acceptable salts thereof, that inhibit proteolytic enzymes such as thrombin are described. Also described are methods for preparing the compounds of Formula I.Type: GrantFiled: March 27, 1997Date of Patent: April 6, 1999Assignee: 3-Dimensional Pharmaceuticals, Inc.Inventors: Richard M. Soll, Tianbao Lu, Cynthia L. Fedde, Bruce E. Tomczuk, Carl Illig
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Patent number: 5880293Abstract: A process for catalytic conversion of carbon dioxide by reacting it with an olefin oxide in the presence of a catalyst which is a tert-butyl-substituted phthalocyanine complex of a metal.Type: GrantFiled: October 30, 1997Date of Patent: March 9, 1999Assignee: Iskra Industry Co., Inc.Inventors: Tomilova Ralisa Godvigovna, Ragulin Valerij Vladimirovich, Lermontov Sergej Andreevich, Shkavrov Sergej Vladimirovich, Chornykh Elena Vasilyevna, Kurdyumova Nadezhda Rudolfovna, Zefirov Nikolaj Serafimovich
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Patent number: 5817683Abstract: Naphthoic derivatives of the Formula (I) ##STR1## wherein the variables are defined herein; and pharmaceutical compositions containing these compounds, and their use as endothelin receptor antagonists are disclosed.Type: GrantFiled: April 8, 1996Date of Patent: October 6, 1998Assignee: SmithKline Beecham CorporationInventors: John Duncan Elliott, Jia-Ning Xiang
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Patent number: 5817838Abstract: A process for the manufacture of 4,4-disubstituted 5-methylene-1,3-dioxolan-2-ones ("cyclocarbonates") of the formula: ##STR1## wherein R.sup.1 and R.sup.2 each independently signify a saturated or olefinically-unsaturated aliphatic group or an aromatic group, or R.sup.1 and R.sup.2 together form tetra- or pentamethylene, by reacting a corresponding 3,3-disubstituted prop-1-yn-3-ol of the formula HC.tbd.C--C(R.sup.1)(R.sup.2)--OH (II) with carbon dioxide in the presence of a quaternary ammonium or phosphonium salt as the catalyst comprises using a silver salt as a further catalyst. An alkali metal or quaternary ammonium or phosphonium salt of a carboxylic acid can also be used to increase the catalytic performance of the silver salt catalyst. Moreover, the addition of triphenylphosphine serves to accelerate the reaction to some extent. The silver salts catalyze this process significantly better than the previously utilized copper salts.Type: GrantFiled: October 8, 1997Date of Patent: October 6, 1998Assignee: Roche Vitamins Inc.Inventors: Hansjorg Grundler, Hans-Jurgen Hansen
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Patent number: 5817653Abstract: Novel compounds of the formula: ##STR1## are disicosed which are endothelin receptor antagonists.Type: GrantFiled: April 12, 1996Date of Patent: October 6, 1998Assignee: SmithKline Beecham CorporationInventors: John Duncan Elliott, John Gerald Gleason, David Taylor Hill
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Patent number: 5786489Abstract: A method for esterifying C13 deoxy taxoid intermediates employs three steps, i.e., oxygenation of the C13 deoxy taxoid intermediate to produce a C13 enone taxoid intermediate; reduction of the C13 enone to produce an alcohol; followed by esterification of the C13 alcohol. Key intermediates include C13 deoxy taxoids; C13 enone substituted taxoids; and C1-C2 cyclo carbonate esters of taxoids.Type: GrantFiled: April 1, 1996Date of Patent: July 28, 1998Assignee: The Scripps Research InstituteInventors: Kyriacos C. Nicolaou, Philippe G. Nantermet, Rodney K. Guy, Hiroaki Ueno
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Patent number: 5719182Abstract: Novel indane and indene derivatives are described which are endothelin receptor antagonists.Type: GrantFiled: May 16, 1995Date of Patent: February 17, 1998Assignee: SmithKline Beecham CorporationInventors: Russell Donovan Cousins, John Duncan Elliott, Maria Amparo Lago, Jack Dale Leber, Catherine Elizabeth Peishoff
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Patent number: 5665890Abstract: The present invention relates 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 steroisomerically or regioselectively enriched product.Type: GrantFiled: March 14, 1995Date of Patent: September 9, 1997Assignee: President and Fellows of Harvard CollegeInventors: Eric N. Jacobsen, James L. Leighton, Luis E. Martinez
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Patent number: 5637732Abstract: The synthesis of taxol and other tricyclic and tetracyclic taxanes.Type: GrantFiled: February 6, 1995Date of Patent: June 10, 1997Assignee: Florida State UniversityInventors: Robert A. Holton, Carmen Somoza, Hyeong B. Kim, Mitsuru Shindo, Ronald J. Biediger, P. Douglas Boatman, Chase Smith, Feng Liang, Krishna Murthi
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Patent number: 5631386Abstract: The residual level of alkylene oxide in the reaction mixture resulting from reaction of alkylene oxide with carbon dioxide to form alkylene carbonate is reduced by stripping with an inert gas such as carbon dioxide.Type: GrantFiled: August 2, 1996Date of Patent: May 20, 1997Assignee: ARCO Chemical Technology, L.P.Inventor: Vijai P. Gupta
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Patent number: 5618952Abstract: Process for the synthesis of taxol and other tricyclic and tetracyclic taxanes.Type: GrantFiled: February 6, 1995Date of Patent: April 8, 1997Assignee: Florida State UniversityInventors: Robert A. Holton, Carmen Somoza, Hyeong B. Kim, Mitsuru Shindo, Ronald J. Biediger, P. Douglas Boatman, Chase Smith, Feng Liang, Krishna Murthi
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Patent number: 5508442Abstract: A bubble column reactor is described which is characterized by a slenderness ratio at a ratio of height to diameter of 2 to 50, a feed, at the bottom end of the bubble column, for the ethylene glycol carbonate (EGG) or propylene glycol carbonate (PGC) already present serving as reaction medium, one or more metering sites for the starting materials CO.sub.2 and ethylene oxide (EOX) or propylene oxide (POX) above the feed for the reaction medium, an outlet for the reaction mixture at the top end of the bubble column, a dividing apparatus connected thereto for the reaction mixture flowing off for dividing it into reaction mixture to be taken off and worked up on the one hand and reaction mixture to be recycled on the other hand and additionally a return line to the feed for the reaction mixture to be recycled. This bubble column reactor can be advantageously used in a process for the continuous preparation of EGG or PGC which is carried out in the temperature range from 100.degree. to 200.degree. C.Type: GrantFiled: May 31, 1994Date of Patent: April 16, 1996Assignee: Bayer AktiengesellschaftInventors: Paul Wagner, Christine Mendoza-Frohn, Hans-Josef Buysch
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Patent number: 5489696Abstract: Ethylene glycol carbonate (EGC) can be obtained in purified form from contaminated material which contains impurities from the production or work-up process, by subjecting it to treatment with activated carbon. The treatment is carried out at 40.degree.-250.degree. C. and at 1-200 bar. The activated carbon has a BET surface area of 200-3,000 m.sup.2 /g.Type: GrantFiled: April 13, 1995Date of Patent: February 6, 1996Assignee: Bayer AktiengesellschaftInventors: Christine Mendoza-Frohn, Paul Wagner, Hans-Josef Buysch
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Patent number: 5488116Abstract: The present invention provides three basic routes for the total synthesis of taxol having the structure: ##STR1## The present invention also provides the intermediates produced in the above processes, processes for synthesizing these intermediates as well as analogues of taxol and nortaxol.Type: GrantFiled: November 2, 1993Date of Patent: January 30, 1996Assignee: Sloan-Kettering Institute for Cancer ResearchInventors: Samuel J. Danishefsky, William G. Bornmann, Yves Queneau, Thomas V. Magee, Walter J. Krol, John J. Masters, David K. Jung
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Patent number: 5463081Abstract: The invention relates to novel intermediates for the preparation of a certain group of novel phenylsulfonylurea herbicides, which herbicides are particularly advantageous for use in crop protection. The novel intermediate compounds are of the formula II ##STR1## and of the formula VI, ##STR2## as defined in the specification and claims. The intermediate compounds may be used to prepare herbicidal and plant growth regulating compounds of the formula I or salts thereof: ##STR3## as defined in the specification. The herbicides so obtained are particularly suitable for selectively controlling weeds.Type: GrantFiled: September 21, 1993Date of Patent: October 31, 1995Assignee: Hoechst AktiengesellschaftInventors: Oswald Ort, Klaus Bauer, Hermann Bieringer
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Patent number: 5457213Abstract: Catalytic procedure for the preparation of an organic carbonate having general formula (I): ##STR1## wherein R represents a C.sub.1 -C.sub.10 alkyl radical, linear or branched, or a C.sub.5 -C.sub.8 cycloalkyl radical; or of a cyclic organic carbonate having general formula (II): ##STR2## wherein R' represents a C.sub.2 -C.sub.5 alkylene radical, linear or branched; including the reacting of an aliphatic or cyclo-aliphatic alcohol having general formula (III):R--OH (III)or an aliphatic diol having general formula (IV):HO--R'--OH (IV)wherein R and R' have the meaning described above, with carbon monoxide and oxygen, in the presence of a catalyst composed of a cobalt(II) or cobalt(III) ion and an organic binder containing at least one oxygen atom, characterized in that the process is carried out in the presence of at least one reaction coadjuvant selected from the following groups of linear or cyclic compounds: ureas, nitriles, amides, phosphoramides, sulphones, sulphoxides, carbamates.Type: GrantFiled: June 8, 1993Date of Patent: October 10, 1995Assignee: Enichem Synthesis S.p.A.Inventors: Daniele Delledonne, Franco Rivetti, Ugo Romano
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Patent number: 5449791Abstract: A process is described for the catalytic preparation of propylene glycol carbonate (PGC) by reacting propylene oxide (POX) and CO.sub.2 in PGC as reaction medium at elevated temperature and elevated pressure and separating off from the catalyst the PGC formed. The process is carried out continuously under adiabatic temperature conditions. Per unit of time, PGC as reaction medium flows into the reactor at 7 to 350 times the amount of the PGC formed per unit of time. At all points of the reactor a CO.sub.2 excess is maintained over the other reaction partner POX. Of the effluent reaction mixture, 80 to 98% by weight are returned to the entrance of the reactor, while the remainder is worked up to give PGC. The sensible heat of the reaction product resulting from the adiabatic temperature conditions can be used for the work-up.Type: GrantFiled: May 31, 1994Date of Patent: September 12, 1995Assignee: Bayer AktiengesellschaftInventors: Paul Wagner, Christine Mendoza-Frohn, Hans-Josef Buysch
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Patent number: 5440004Abstract: A method for the production of an alkylene carbonate at high yields and high selectivity by a reaction between an alkylene glycol and urea, the method being capable to preventing the deposition of a white crystal in the reflux condenser used in a conventional method for the production of alkylene carbonate and the subsequent decrease in the yield, wherein:a gas washing member and a cooling member are disposed above a reaction portion where alkylene glycol and urea are allowed to react,ammonia-containing steam exhausted from the reaction portion is downwardly introduced into the cooling member through the gas washing member,condensate and ammonia gas exhausted from a bottom of the cooling member are gas-liquid separated,the condensate is introduced into the gas washing member, andthe ammonia gas is removed from the reaction system.Type: GrantFiled: May 5, 1994Date of Patent: August 8, 1995Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Masaharu Doya, Yutaka Kanbara, Ken-ichi Kimizuka, Takashi Okawa
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Patent number: 5405972Abstract: Process for the synthesis of taxol and other tricyclic and tetracyclic taxanes.Type: GrantFiled: January 27, 1994Date of Patent: April 11, 1995Assignee: Florida State UniversityInventors: Robert A. Holton, Carmen Somoza, Hyeong B. Kim, Mitsuru Shindo, Ronald J. Biediger, P. Douglas Boatman, Chase Smith, Feng Liang, Krishna Murthi
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Patent number: 5395949Abstract: Organic carbonates and cyclic organic carbonates are prepared by reacting an aliphatic or cycloaliphatic alcohol, or, respectively, an aliphatic diol, with carbon monoxide and oxygen, by operating in the presence of a complex catalyst of cobalt with organic ligands bearing one or more oxygen functional groups, as electron donors.Type: GrantFiled: January 8, 1993Date of Patent: March 7, 1995Assignee: Enichem Synthesis S.p.A.Inventors: Daniele Delledonne, Franco Rivetti, Ugo Romano
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Patent number: 5393855Abstract: A thermosetting resin composition which comprises (A-2) a vinyl polymer having at least one each of 2-oxo-1,3-dioxolan-4-yl group and a carboxyl group together on the polymer and a catalyst (B) effective for ring-opening the 2-oxo-1,3-dioxolan-4-yl group and curing said vinyl polymer, and related resin compositions.Type: GrantFiled: June 23, 1994Date of Patent: February 28, 1995Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Goro Iwamura, Hiroshi Kinoshita, Asako Kometani
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Patent number: 5391767Abstract: Alkylene carbonates can be prepared by catalytic reaction of alkylene oxides with carbon dioxide, catalysts which can be regenerated of the formulaa[MX]/b[ZnY.sub.2 ] (III)whereinM denotes an alkali metal,X and Y independently of one another denote chlorine, bromine or iodine anda and b denote fractions or integers in a range from 0.001 to 2being employed.The catalysts (III) can be regenerated by treating with a halogen compound. The halogen compounds which can be used for this purpose belong to the group comprising hydrogen halides, inorganic and organic acid halides, interhalogen compounds and organic halides with mobile halogen.Type: GrantFiled: November 16, 1992Date of Patent: February 21, 1995Assignee: Bayer AktiengesellschaftInventors: Franz-Josef Mais, Hans-Josef Buysch, Christine Mendoza-Frohn, Alexander Klausener
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Patent number: 5374699Abstract: A thermosetting resin composition which comprises (A-2) a vinyl polymer having at least one each of 2-oxo-1,3-dioxolan-4-yl group and a carboxyl group together on the polymer and a catalyst (B) effective for ring-opening the 2-oxo-1,3-dioxolan-4-yl group and curing said vinyl polymer, and related resin compositions.Type: GrantFiled: February 7, 1994Date of Patent: December 20, 1994Assignee: Dainipponink and Chemicals, Inc.Inventors: Goro Iwamura, Hiroshi Kinoshita, Asako Kometani
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Patent number: 5359094Abstract: A process for the preparation of glyceryl carbonate by causing glycerol to react with carbon monoxide and oxygen in the presence of a Group Ib, Group IIb, or Group VIIIb catalyst as per the Periodic Table at temperatures ranging from 0.degree. to 180.degree. C.Type: GrantFiled: July 29, 1993Date of Patent: October 25, 1994Assignee: BASF AktiengesellschaftInventors: Joaquim H. Teles, Norbert Rieber, Wolfgang Harder
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Patent number: 5350862Abstract: A process is described for the catalytic preparation of ethylene glycol carbonate by reaction of ethylene oxide and CO.sub.2 in ethylene glycol carbonate as the reaction medium at elevated temperature and at elevated pressure with work-up by distillation to separate the resulting ethylene glycol carbonate from the catalyst. The process is carried out continuously under adiabatic temperature conditions. Per unit of time, ethylene glycol carbonate as reaction medium runs into the reactor in a amount 10 to 120 times that of ethylene glycol carbonate formed per unit of time. A CO.sub.2 excess over the other reaction partner ethylene oxide is maintained at all sites of the reactor. 80 to 98% by weight of the reaction mixture flowing out is returned to the inlet of the reactor, while the remainder is worked up by distillation to give ethylene glycol carbonate. The sensible heat produced in the reaction product as a result of the adiabatic temperature conditions, is used for the work-up.Type: GrantFiled: December 3, 1992Date of Patent: September 27, 1994Assignee: Bayer AktiengesellschaftInventors: Paul Wagner, Hans-Josef Buysch, Alexander Klausener, Franz-Josef Mais, Christine Mendoza-Frohn
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Patent number: 5349077Abstract: A process for producing alkylene carbonates which comprises reacting urea and glycols described by the general formula RCH(OH) CH.sub.2 OH; wherein R represents hydrogen or an alkyl group containing 1 to 4 carbons, using a catalyst containing zinc, magnesium, lead or calcium at reduced pressures. The alkylene carbonates are produced with high yield easily using raw materials which are comparatively inexpensive with a mild reaction that does not involve explosive or hazardous materials.Type: GrantFiled: July 30, 1993Date of Patent: September 20, 1994Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Masaharu Doya, Takashi Ohkawa, Yutaka Kanbara, Aksushi Okamoto, Kenichi Kimizuka
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Patent number: 5340889Abstract: Liquid hydroxyurethane products having cyclocarbonate end groups are prepared by reacting a molar excess of a bis-carbonate of a bis-glycidyl ether of neopentyl glycol or 1,4-cyclohexanedimethanol with a polyoxyalkylenediamine such as a polyoxypropylenediamine. These products are useful for the preparation of polyurethanes, polyurethane polyols, polyester polyurethane polyols, and polycarbonate polyurethane polyols.Type: GrantFiled: July 19, 1993Date of Patent: August 23, 1994Assignee: Texaco Chemical CompanyInventors: Wheeler C. Crawford, Edward T. Marquis, Howard P. Klein
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Patent number: 5283356Abstract: A method for the manufacture of alkylene carbonates is disclosed. Alkylene carbonates are prepared by reacting alkylene oxides and carbon dioxide in the presence of a metal phthalocyanine catalyst.Type: GrantFiled: August 3, 1992Date of Patent: February 1, 1994Assignee: Texaco Chemical CompanyInventors: Edward T. Marquis, John R. Sanderson
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Patent number: 5281723Abstract: Disclosed is a method of recovering a cyclic alkylene carbonate, such as propylene carbonate, from an effluent stream of a process in which the cyclic alkylene carbonate removes an organic photoresist material from a substrate. The effluent is a cyclic alkylene carbonate effluent, e.g., a propylene carbonate effluent, of the carbonate, water, and polymeric solids. In the recovery process the cyclic alkylene carbonate effluent is fed to a heat exchanger, and separated into (i) water and volatiles, and (ii) cyclic carbonate. This lowers the concentration of water in the cyclic alkylene carbonate to a level that is low enough to substantially avoid hydrolysis of cyclic alkylene carbonate to the corresponding glycol. The dewatered cyclic alkylene carbonate is evaporated to separate the cyclic alkylene carbonate from high boiling materials and polymeric solids. The dewatered cyclic alkylene carbonate is separated into (i) a cyclic alkylene carbonate fraction, and (ii) a photoresist solids fraction.Type: GrantFiled: August 4, 1992Date of Patent: January 25, 1994Assignee: International Business MachinesInventors: Nageshwer R. Bantu, Anilkumar C. Bhatt, Ross W. Keesler, Konstantinos Papathomas, Terry D. Sinclair, Jerome J. Wagner
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Patent number: 5278313Abstract: A novel, overall process for the preparation of a compound of the formula I: ##STR1## where R.sup.1 and R.sup.2 are each independently hydrogen, an alkyl group, a cycloalkyl group, an aryl group or, taken together with the carbon atom to which they are attached, form a cycloalkyl group; andR.sup.3 is hydrogen, an alkyl group, or an aryl group,or salts thereof, useful as intermediates in the preparation of HMG-CoA reductase inhibitors; novel methods within the overall process; and novel intermediates produced by those methods.Type: GrantFiled: March 27, 1992Date of Patent: January 11, 1994Assignee: E. R. Squibb & Sons, Inc.Inventors: John K. Thottathil, Yadagiri Pendri, Wen-Sen Li, David R. Kronenthal
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Patent number: 5256689Abstract: Disclosed herein are compounds of structural formula (I) ##STR1## which are useful as cholesterol lowering agents and as inhibitors of squalene synthase.Type: GrantFiled: October 26, 1992Date of Patent: October 26, 1993Assignee: Merck & Co., Inc.Inventor: Yuan-Ching P. Chiang
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Patent number: 5212321Abstract: A process for producing trimethylene carbonate wherein 1,3-propanediol is reacted with diethylcarbonate in the presence of zinc powder, zinc oxide, tin powder, tin halide or an organo-tin compound, at an elevated temperature.Type: GrantFiled: June 17, 1992Date of Patent: May 18, 1993Assignee: Boehringer Ingelheim GmbHInventors: Klaus R. Muller, Berthold Buchholz, Joachim Hess
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Patent number: 5210336Abstract: A process is provided for the conversion of an olefin to the corresponding glycol wherein a mixture of olefin, oxygen, carbon dioxide and water is reacted in a solvent at supercritical conditions with respect to the reaction mixture.Type: GrantFiled: January 24, 1992Date of Patent: May 11, 1993Assignee: ARCO Chemical Technology, L.P.Inventors: Anne M. Gaffney, John A. Sofranko
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Patent number: 5179214Abstract: A method for the manufacture of alkylene carbonates is disclosed. Alkylene carbonates that are free of halogen contaminants are prepared by reacting alkylene oxides and carbon dioxide in the presence of a catalyst selected from the group consisting of cerous acetate, ceric ammonium nitrate, cerous nitrate hexahydrate, and ceric potassium nitrate.Type: GrantFiled: September 23, 1991Date of Patent: January 12, 1993Assignee: Texaco Chemical CompanyInventors: Edward T. Marquis, John R. Sanderson
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Patent number: 5162554Abstract: Stable, optically active enantiomers of substituted glyceraldehydes or glycidaldehydes are synthesized by using osmium-catalyzed asymmetric dihydroxylation of an olefin which is a substituted 1,5-dihydro-3H-2,4-benzodioxepine. For example, the protected glyceraldehyde, 3-(1,2-dihydroxyethyl)-1,5-dihydro-3H-2,4-benzodioxepine and the protected glycidaldehyde, 3-(1,2-epoxyethyl)-1,5-dihydro-3H-2,4-benzodioxepine have been synthesized and the optical enantiomer has been recovered. In the synthetic and isolation methods, enantiomers with high enantiomeric excess are recovered from the mother liquor following a recrystallization step.Type: GrantFiled: June 18, 1991Date of Patent: November 10, 1992Assignee: Massachusetts Institute of TechnologyInventors: K. Barry Sharpless, Ryu Oi