Adamantane Or Derivative Patents (Class 585/352)
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Patent number: 11117847Abstract: In the present method a reaction mixture is comprised of a source of adamantane, mixed with an alkane or cycloalkane. A Lewis acid catalyst is added to the reaction mixture which is heated and then purified. The resulting alkyl diamondoid mixtures have significantly higher densities and volumetric net heats of combustion while maintaining low viscosities which allow for use at low temperature.Type: GrantFiled: March 29, 2019Date of Patent: September 14, 2021Assignee: The United States of America, as Represented by the Secretary of the NavyInventor: Benjamin G. Harvey
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Patent number: 10710941Abstract: A diamondoid fuel comprising a cage structure including 10, 14, 18, or 22 carbons. The diamondoid fuel also includes one of one to four cyclopropyl groups bonded to the cage structure or two to four functional groups bonded to the cage structure where the functional groups are an alkyl group, an allyl group, a cyclopropyl group, or combinations thereof. Additionally, at least one functional group is an allyl group and at least one functional group is a cyclopropyl group.Type: GrantFiled: November 1, 2018Date of Patent: July 14, 2020Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Benjamin G. Harvey, Matthew C. Davis
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Patent number: 9963652Abstract: A method to generate cyclic hydrocarbons from farnesene to increase both the density and net heat of combustion of the product fuels.Type: GrantFiled: October 12, 2016Date of Patent: May 8, 2018Assignee: The United States of America as Represented by the Secretary of the NavyInventor: Benjamin G Harvey
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Patent number: 9714202Abstract: A method for producing adamantane includes the steps of preparing a catalytic composition including an acidic ionic liquid and a co-catalyst and subjecting a tetrahydrodicyclopentadiene-containing component to isomerization in the presence of the catalytic composition to form adamantane. The acidic ionic liquid includes aluminum chloride and a quaternary onium compound selected from the group consisting of a quaternary ammonium halide, a quaternary phosphonium halide, and a combination thereof. The co-catalyst is an oxygen-containing reagent.Type: GrantFiled: November 18, 2014Date of Patent: July 25, 2017Assignee: CPC Corporation, TaiwanInventors: Ming-Yu Huang, Jann-Chen Lin, Yih-Ping Wang, Jung-Chung Wu
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Patent number: 9085503Abstract: According to the present invention, a method can be provided for producing 1,3-dimethyladamantane represented by formula (2) by performing a skeletal isomerization reaction using, as catalysts, 0.5 to 1 .5 parts by weight of HF and 0.05 to 0.5 parts by weight of BF3 with respect to 1 part by weight of perhydroacenaphthene represented by formula (1) under a reaction temperature of 60 to 110° C.Type: GrantFiled: November 8, 2011Date of Patent: July 21, 2015Assignee: MITSUBISHI GAS CHEMICAL COMPANY, INC.Inventors: Yutaka Matsuura, Mitsuharu Kitamura
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Publication number: 20150112108Abstract: A method prepares high-yield adamantane in the presence of an ionic liquid catalyst formed by mixing an aluminum bromide-containing or aluminum iodide-containing catalyst and an ionic liquid. Given the method, isomerization of tetrahydrodicyclopentadiene (THDCPD) takes place in the presence of the ionic liquid catalyst to produce adamantane of high reactant conversion, high selectivity, and high yield and cut costs.Type: ApplicationFiled: May 16, 2014Publication date: April 23, 2015Applicant: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: CHI-FA HSIEH, SHU-CHEN CHIANG, WEN-CHIUNG SU, FU-YENG LIN
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Patent number: 8809024Abstract: A process for production of cyclopropyl-fused pyrrolidine-based inhibitors of dipeptidyl peptidase IV is provided which employs a BOC-protected amine of the structure prepared by subjecting an acid of the structure to reduce amination by treating the acid with ammonium formate, nicotinamide adenine dinucleotide, dithiothreitol and partially purified phenylalanine dehydrogenase/formate dehydrogenase enzyme concentrate (PDH/FDH) and without isolating treating the resulting amine of the structure 2 with di-tert-butyl dicarbonate to form the BOC-protected amine.Type: GrantFiled: January 4, 2013Date of Patent: August 19, 2014Assignee: AstraZeneca ABInventors: Michael Politino, Matthew M. Cadin, Jason G. Chen
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Patent number: 8716539Abstract: Dinitroxylated diamantanes are suitable for being reacted with nucleophiles to form the corresponding disubstituted diamantanes. Surprisingly, at least dinitroxylated or hydroxylated diamantanes are rearranged in the presence of a strong acid and at least 4,9-nitroxylated or hydroxylated diamantanes are created. On this basis, 4,9-substituted diamantanes are able to be produced in a targeted manner by reaction with further nucleophiles.Type: GrantFiled: December 4, 2006Date of Patent: May 6, 2014Assignee: Justus-Liebig-Universitaet GiessenInventors: Peter R. Schreiner, Andrey A. Fokin
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Patent number: 8546150Abstract: New chemiluminescent compounds, stable in aqueous buffers, for use in biological assaying include acridane-based compounds and 1,2-dioxetanes. Among the new acridane-based compounds are water-soluble acridanes, enhancer coupled acridanes, bis and tris-acridanes as well as acridane-1,2-dioxetanes. Among the new 1,2-dioxetanes are electron deficient group-containing dioxetanes and tethered bis-1,2-dioxetanes. The 1,2-dioxetanes are useful as substrates for various enzymes. The acridanes can be admixed with an oxidizing agent an aqueous buffer and, optionally, a stabilizer to form a substrate or reagent formulation useful for assaying, inter alia, HRP.Type: GrantFiled: August 23, 2010Date of Patent: October 1, 2013Assignee: Michigan Diagnostics, L.L.C.Inventors: Brij Pal Giri, Dinesh Dagli, Pritam Singh
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Publication number: 20130225889Abstract: According to the present invention, a method can be provided for producing 1,3-dimethyladamantane represented by formula (2) by performing a skeletal isomerization reaction using, as catalysts, 0.5 to 1 .5 parts by weight of HF and 0.05 to 0.5 parts by weight of BF3 with respect to 1 part by weight of perhydroacenaphthene represented by formula (1) under a reaction temperature of 60 to 110° C.Type: ApplicationFiled: November 8, 2011Publication date: August 29, 2013Applicant: Mitsubishi Gas Chemical Company, Inc.Inventors: Yutaka Matsuura, Mitsuharu Kitamura
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Publication number: 20130184461Abstract: Mechanosynthesis trajectories are described which are approximately coaxial, and are shown to be useful in a wide range of mechanosynthesis reactions regardless of the nature of the tip or the feedstock being transferred.Type: ApplicationFiled: February 28, 2013Publication date: July 18, 2013Inventors: Robert A. Freitas, JR., Ralph C. Merkle
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Publication number: 20130178627Abstract: Methods and systems for building three-dimensional workpieces are described using a plurality of mechanosynthetic reactions. These methods may employ engineered reliability in reactions and process conditions and may use simulated or otherwise vetted reaction sequences, to allow workpieces requiring many reactions to be built with acceptable reliability. These many reactions may be the repetition of one or a small number of reactions, or many diverse reactions, or a combination thereof.Type: ApplicationFiled: February 28, 2013Publication date: July 11, 2013Inventors: Robert A. Freitas, JR., Ralph C. Merkle
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Patent number: 8466200Abstract: The present invention relates to 2-adamantylurea derivatives of formula I as selective inhibitors of the enzyme 11-beta-hydroxysteroid dehydrogenase type 1 (11?-HSD1) and the use of such compounds for the treatment and prevention of metabolic syndrome, diabetes, insulin resistance, obesity, lipid disorders, glaucoma, osteoporosis, cognitive disorders, anxiety, depression, immune disorders, hypertension and other diseases and conditions.Type: GrantFiled: February 7, 2012Date of Patent: June 18, 2013Assignee: Merck Patent GmbHInventors: Denis Carniato, Christine Charon, Johannes Gleitz, Didier Roche, Bjoern Hock
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Patent number: 8415354Abstract: The present invention relates to inhibitors of 11-beta-hydroxysteroid dehydrogenase Type 1 enzyme and their use in treatment of non-insulin dependent type 2 diabetes, insulin resistance, obesity, lipid disorders, metabolic syndrome, central nervous system disorders, and diseases and conditions that are related to excessive glucocorticoids.Type: GrantFiled: February 20, 2009Date of Patent: April 9, 2013Assignee: Abbott LaboratoriesInventors: R. Scott Bitner, Kaitlin E. Browman, Michael E. Brune, Steven Fung, Peer B. Jacobson, Lynne E. Rueter, Marina I. Strakhova, Jiahong Wang, James T. Link, Yixian Chen, Hwan-soo Jae, Jyoti R. Patel, Marina A. Pliushchev, Jeffrey J. Rohde, Qi Shuai, Bryan K. Sorensen, Martin Winn, Dariusz Wodka, Hong Yong
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Patent number: 8367166Abstract: In some embodiments, the present invention is directed to methods for synthesizing higher diamondoids, wherein said methods involve augmenting existing diamondoid molecules through the bonding of carbon atoms to such existing diamondoid species with intramolecular cross-linking so as to form larger diamondoids containing face-fused diamond-crystal (adamantane) cages with carbon frameworks superimposable on the cubic-diamond crystal lattice.Type: GrantFiled: October 29, 2009Date of Patent: February 5, 2013Assignees: Chevron U.S.A. Inc., The Board of Trustees of the Leland Stanford Junior UniversityInventors: Jeremy E. Dahl, J. Michael Moldowan, Michael A. Kelly, Robert M. Carlson
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Patent number: 8361761Abstract: A process for production of cyclopropyl-fused pyrrolidine-based inhibitors of dipeptidyl peptidase IV is provided which employs a BOC-protected amine of the structure prepared by subjecting an acid of the structure to reduce amination by treating the acid with ammonium formate, nicotinamide adenine dinucleotide, dithiothreitol and partially purified phenylalanine dehydrogenase/formate dehydrogenase enzyme concentrate (PDH/FDH) and without isolating treating the resulting amine of the structure 2 with di-tert-butyl dicarbonate to form the BOC-protected amine.Type: GrantFiled: June 14, 2012Date of Patent: January 29, 2013Assignee: Bristol Myers-Squibb CompanyInventors: Michael Politino, Matthew M. Cadin, Paul M. Skonezny, Jason G. Chen
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Patent number: 8222009Abstract: A process for production of cyclopropyl-fused pyrrolidine-based inhibitors of dipeptidyl peptidase IV is provided which employs a BOC-protected amine of the structure prepared by subjecting an acid of the structure to reduce amination by treating the acid with ammonium formate, nicotinamide adenine dinucleotide, dithiothreitol and partially purified phenylalanine dehydrogenase/formate dehydrogenase enzyme concentrate (PDH/FDH) and without isolating treating the resulting amine of the structure 2 with di-tert-butyl dicarbonate to form the BOC-protected amine.Type: GrantFiled: June 17, 2010Date of Patent: July 17, 2012Assignee: Bristol-Myers Squibb CompanyInventors: Michael Politino, Matthew M. Cadin, Paul M. Skonezny, Jason G. Chen
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Patent number: 8211892Abstract: The present invention relates to tetrahydroquinoxaline urea derivatives of Formula (I): as disclosed herein, to their preparation and to their therapeutic application.Type: GrantFiled: July 26, 2010Date of Patent: July 3, 2012Assignee: Sanofi-AventisInventors: Alain Jean Braun, Olivier Crespin, Claudie Namane, Eric Nicolai, Francois Pacquet, Cecile Pascal, Christophe Philippo, Olivier Venier
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Patent number: 8188326Abstract: A method for producing adamantane by performing an isomerization reaction in two stages using endo-tetrahydrodicyclopentadiene and/or exo-tetrahydrodicyclopentadiene as a starting material, wherein in a first-stage isomerization reaction from endo-tetrahydrodicyclopentadiene (tricyclo[5.2.1.02,6]decane) to exo-tetrahydrodicyclopentadiene (tricyclo[5.2.1.02,6]decane), an HF catalyst alone or two catalysts of an HF catalyst and a BF3 catalyst are used in the absence of a solvent; and in a second-stage isomerization reaction from exo-tetrahydrodicyclopentadiene (tricyclo[5.2.1.02,6]decane) to adamantane (tricyclo[3.3.1.13,7]decane), an HF catalyst and a BF3 catalyst are used in the absence of a solvent.Type: GrantFiled: May 7, 2009Date of Patent: May 29, 2012Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Takeshi Kawai, Mitsuharu Kitamura
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Publication number: 20110282100Abstract: The present invention relates to a process for preparing memantine, or a pharmaceutically acceptable salt thereof (e.g., memantine hydrochloride), which is substantially free of impurities.Type: ApplicationFiled: January 20, 2010Publication date: November 17, 2011Applicant: MERZ PHARMA GmbH & Co. KGaAInventors: Gunter Quack, Markus-Rene Gold
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Publication number: 20100286460Abstract: A method for synthesizing exo-tetrahydrodicyclopentadiene (exo-THDCPD) and adamantane is provided, including isomerization of an endo-tetrahydrodicyclopentadiene (endo-THDCPD) as a reaction feed with an acidic ionic liquid of aluminum trichloride in a pseudo-fixed bed ionic liquid reactor. Reactants float as a droplet from bottom to top of the pseudo-fixed bed reactor, and finally are discharged from a side tube. A mole fraction of aluminum trichloride in the acidic ionic liquid of aluminum trichloride is from 0.5 to 0.9, a feeding rate of the reaction feed is 0.1-10 g/min, and a temperature for the isomerization is between 25-120° C.Type: ApplicationFiled: May 11, 2009Publication date: November 11, 2010Applicant: CPC Corporation, TaiwanInventors: Ming-Yu Huang, Jen-Chun Chang, Jann-Chen Lin, Kun-Hai Lin, Jung-Chung Wu
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Publication number: 20100112214Abstract: In some embodiments, the present invention is directed to methods for synthesizing higher diamondoids, wherein said methods involve augmenting existing diamondoid molecules through the bonding of carbon atoms to such existing diamondoid species with intramolecular cross-linking so as to form larger diamondoids containing face-fused diamond-crystal (adamantane) cages with carbon frameworks superimposable on the cubic-diamond crystal lattice.Type: ApplicationFiled: October 29, 2009Publication date: May 6, 2010Applicants: Chevron U.S.A. Inc., The Board of Trustees of the Leland Stanford Junior UniversityInventors: Jeremy E. Dahl, J. Michael Moldowan, Michael A. Kelly, Robert M. Carlson
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Patent number: 7649065Abstract: To provide a novel fluoroadamantane derivative, a novel polymerizable fluoroadamantane derivative and a novel fluoropolymer, and processes for production thereof. To provide the following compound (3), the following compound (4), a polymer obtained by polymerizing the compound (4) and processes for production thereof: provided that Q represents —CHF— or —CF2— (provided that six Qs may be the same or different), Z represents —H, —F or —CH2OH (provided that three Zs may be the same or different), W represents —H or a C1-10 hydrocarbon group, R represents —H, —F, —CH3 or —CF3, and J represents —H, —F, —CHWOH or —CHWOCOCR?CH2 (provided that three Js may be the same or different).Type: GrantFiled: October 25, 2006Date of Patent: January 19, 2010Assignee: Asahi Glass Company, LimitedInventors: Shu-zhong Wang, Koichi Murata, Kazuya Oharu, Yoshitomi Morizawa, Osamu Yokokoji, Naoko Shirota
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Patent number: 7612155Abstract: A film forming composition includes a polymer of a compound represented by formula (I): wherein R1, R2 and R3 each independently represents a substituent containing a carbon-carbon double bond or carbon-carbon triple bond; X1, X2 and X3 each independently represents any substituent; l and n each stands for an integer of from 0 to 15 and m stands for an integer of from 0 to 14, with the proviso that l, m and n do not represent 0 simultaneously; o and q each independently stands for an integer of from 0 to 15 and p independently stands for an integer of from 0 to 14; and r stands for 0 or 1, with the proviso that when r=0, R1 and R3 each independently represents a substituent containing a carbon-carbon double bond.Type: GrantFiled: April 25, 2007Date of Patent: November 3, 2009Assignee: FUJIFILM CorporationInventors: Yasufumi Watanabe, Katsuyuki Watanabe
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Patent number: 7569649Abstract: A film forming composition includes a compound having a cage structure; and a compound having a conjugated diene structure.Type: GrantFiled: September 13, 2007Date of Patent: August 4, 2009Assignee: FUJIFILM CorporationInventor: Hidetoshi Hiraoka
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Publication number: 20090177019Abstract: Provided is a method for production of adamantane which enables producing a high-purity adamantane at low cost and with high efficiency by using effectively trimethylenenorbornane contained in a heavy raffinate heavy and having conventionally been no use other than fuels and the like, and which enables alleviating poisoning of a catalyst used in isomerization and corrosion of devices, whereby an industrially advantageous adamantane can be produced. In addition, the process for producing adamantane including an isomerization process of isomerizing trimethylenenorbornane contained in a raffinate obtained from a platfinate is characterized by including a water-washing removal process of removing sulfolane in a trimethylenenorbornane concentrate to be supplied in the isomerization process by water-washing.Type: ApplicationFiled: May 9, 2007Publication date: July 9, 2009Applicant: Idemitsu Kosan Co., Ltd.Inventors: Masao Saito, Akio Kojima, Toshiaki Kusaba, Jun Mase
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Publication number: 20090131729Abstract: Provided is a method for production of adamantanes, in which, when a tricyclic saturated hydrocarbon compound having 10 or more carbon atoms is isomerized in the presence of a solid catalyst to give adamantanes, no solid matter derived from an oxygen-containing compound is formed or accumulated in the inlet or the bottom of an isomerization reactor by providing a pre-reactor in an isomerization step even if the oxygen-containing compound is present in a raw material to be supplied.Type: ApplicationFiled: May 2, 2007Publication date: May 21, 2009Applicant: Idemitsu Kosan Co., Ltd.Inventors: Masao Saito, Akio Kojima, Jun Mase, Toshiaki Kusaba
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Publication number: 20090093659Abstract: The invention provides methods of using positionally controlled molecular tools in an inert environment (such as ultra high vacuum) to fabricate complex atomically precise structures, including diamond, graphite, nanotubes, fullerenes, additional sets of the selfsame molecular tools, and others. Molecular tools have atomically precise tooltips which interact directly with a workpiece to add, remove, and modify specific atoms and groups of atoms, and have handles by which they can be held and positioned; tools can be recharged after use. Specific tooltips are brought into contact with and bond to specific feedstock molecules distributed on a presentation surface, and then transfer said feedstock molecules to specific atomic sites on a workpiece using mechanosynthetic chemical reactions. Specific sites on a workpiece can be made chemically reactive, facilitating the transfer of specific groups to them.Type: ApplicationFiled: September 4, 2008Publication date: April 9, 2009Inventors: Robert A. Freitas, JR., Ralph C. Merkle
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Patent number: 7501185Abstract: A film-forming composition comprising: a compound having a specific cage structure; a pore-forming agent; an adhesion promoter; and so on, an insulating film formed from the film-forming composition and an electronic device comprising the insulating film.Type: GrantFiled: June 10, 2005Date of Patent: March 10, 2009Assignee: FUJIFILM CorporationInventors: Katsuyuki Watanabe, Morio Yagihara, Kensuke Morita, Yutaka Adegawa, Akira Asano
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Patent number: 7488859Abstract: A method for producing adamantane includes isomerizing exo-tetrahydrodicyclopentadiene into adamantane in an acidic chloroaluminate ionic liquid composed of aluminum(III) trichloride and a quaternary ammonium halide having a quaternary ammonium cation selected from a group consisting of tetraalkylammonium, dialkylpyridinium, and trialkylimidazolium.Type: GrantFiled: June 20, 2007Date of Patent: February 10, 2009Assignee: CPC Corporation, TaiwanInventors: Ming-Yu Huang, Jann-Chen Lin, Kun-Hai Lin, Jung-Chung Wu
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Patent number: 7422908Abstract: A method of generating light through chemiluminescence involves providing a stable 1,2-dioxetane of the formula: Wherein (a) R1 and R2 are each, individually, a chemical reactive site or when fused together form a chemical reactive site, and R3 and R4 are each, individually, a chemical reactive site or when fused together form a chemical reactive or (b) R1 has at least two hetero atoms with chemical reactive site and R3 and R4 are inactive site and R2 is a chemical reactive site.Type: GrantFiled: October 4, 2002Date of Patent: September 9, 2008Inventor: Brij P. Giri
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Patent number: 7402716Abstract: Novel compounds having a hybrid cubic/hexagonal diamond crystal structure are disclosed. Each of the four compounds have the stoichiometric formula C26H32 and a molecular weight of 344. The four compounds are contemplated to have a utility in diamond film nucleation.Type: GrantFiled: December 8, 2004Date of Patent: July 22, 2008Assignee: Chevron U.S.A. Inc.Inventors: Jeremy E. Dahl, Robert M. Carlson, Shenggao Liu
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Patent number: 7393987Abstract: The present invention provides a process of an industrially advantageous production of high-purity adamantane at a low cost and with a high efficiency by isomerizing trimethylenenorbornane contained in a raffinate obtained from a platfinate.Type: GrantFiled: December 16, 2004Date of Patent: July 1, 2008Assignee: Idemitsu Kosan Co., Ltd.Inventors: Akio Kojima, Masao Saito, Shinji Miyamoto, Jun Mase, Toyozo Fujioka
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Patent number: 7381855Abstract: An industrially advantageous process for producing adamantane by which high-purity adamantane reduced in coloration is efficiently produced while minimizing the loss. The process, which is for producing adamantane by isomerizing trimethylenenorbornane, includes (A) a reaction step of isomerizing the starting material, (B) a concentration step of concentrating the adamantane contained in the resultant liquid reaction mixture, (C) a crystallization step of precipitating the concentrated adamantane, (D) a solid-liquid separation step of separating the adamantane crystals from the slurry resulting from the crystallization, (E) a washing step of washing the isolated adamantane crystals, and (F) a drying step of drying the adamantane crystals washed, characterized in that the mass ratio of the endo-trimethylenenorbornane to the adamantane each contained in the materials to be subjected to the crystallization step (C) (endo-trimethylenenorbornane/adamantane) is 0.25 or lower.Type: GrantFiled: February 28, 2005Date of Patent: June 3, 2008Assignee: Idemitsu Kosan Co., Ltd.Inventors: Jun Mase, Shinji Miyamoto, Akio Kojima, Masao Saito, Toshiaki Kusaba
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Patent number: 7173160Abstract: Hydroprocessing such as hydrocracking is advantageously employed in processes for the recovery and purification of higher diamondoids from petroleum feedstocks. Hydrocracking and other hydroprocesses degrade nondiamondoid contaminants.Type: GrantFiled: July 16, 2003Date of Patent: February 6, 2007Assignee: Chevron U.S.A. Inc.Inventors: Theo Maesen, Robert M. Carlson, Jeremy E. Dahl, Shenggao Liu, Hye Kyung C. Timken, Waqar R. Qureshi
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Patent number: 7145048Abstract: The invention relates to a method of selectively producing adamantanes in a production apparatus made of an inexpensive material, not having any negative influence on the natural environment. The method for producing adamantanes includes isomerizing a tricyclic saturated hydrocarbon having at least 10 carbon atoms in the presence of a metal-carrying solid acid catalyst, wherein water and/or alcohol is made to coexist along with the catalyst during the isomerization.Type: GrantFiled: June 12, 2002Date of Patent: December 5, 2006Assignee: Idemitsu Kosan Co., Ltd.Inventors: Akio Kojima, Masao Saito
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Patent number: 7034194Abstract: Disclosed are compositions comprising one or more decamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more decamantanes. Also disclosed are novel processes for the separation and isolation of decamantane components into recoverable fractions from a feedstock containing at least a higher diamondoid component which contains one or more decamantane components.Type: GrantFiled: December 12, 2001Date of Patent: April 25, 2006Assignee: Chevron U.S.A. Inc.Inventors: Jeremy E. Dahl, Robert M. Carlson
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Patent number: 7019183Abstract: It is made possible to efficiently produce adamantane and analogues thereof, namely a hydrocarbon having an adamantane structure by a process which comprises isomerizing a tricyclic saturated hydrocarbon having ten or more carbon atoms in the presence of a solid-acid catalyst containing one or two or more metals selected from among the metals belonging to group VIII in the Periodic Table (group 8 to 12 in the new Periodic Table), wherein one or two or more monocyclic saturated hydrocarbons are added to the tricyclic saturated hydrocarbon having ten or more carbon atoms.Type: GrantFiled: November 26, 2001Date of Patent: March 28, 2006Assignee: Idemitsu Kosan Co., Ltd.Inventors: Akio Kojima, Kouichi Kodoi
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Patent number: 6949618Abstract: Provided are polyimide and a thin film thereof which have a three-dimensional structure and therefore are excellent in a mechanical strength and a heat resistance as compared with those of conventional linear polyimide. The polyimide is obtained from a salt of multifunctional amine represented by Formula (1): (wherein A represents a tetravalent organic group, and n represents an integer of 0 to 3) and tetracarboxylic diester represented by Formula (2): (wherein B represents a tetravalent organic group having 1 to 20 carbon atoms, and R1 and R2 each represent independently an alkyl group having 1 to 5 carbon atoms).Type: GrantFiled: October 29, 2002Date of Patent: September 27, 2005Assignee: Chisso CorporationInventor: Takashi Kato
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Patent number: 6861569Abstract: Disclosed are processes for the recovery and purification of higher diamondoids from a hydrocarbonaceous feedstock. Specifically disclosed is a multi-step recovery process for obtaining diamondoid compositions enhanced in tetramantane components and other higher diamondoid components. Also disclosed are compositions comprising at least about 10 weight percent of non-ionized tetramantane components and other higher diamondoid components and at least about 0.5 weight percent of non-ionized pentamantane components and other higher diamondoid components based on the total weight of diamondoid components present.Type: GrantFiled: January 17, 2002Date of Patent: March 1, 2005Assignee: Chevron U.S.A. Inc.Inventors: Jeremy E. Dahl, Robert M. Carlson
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Patent number: 6844477Abstract: Disclosed are processes for the recovery and purification of higher diamondoids from a hydrocarbonaceous feedstock. Specifically disclosed is a multi-step recovery process for obtaining diamondoid compositions enhanced in tetramantane components and higher diamondoid components. Also disclosed are compositions comprising at least about 10 weight percent of non-ionized tetramantane components and higher diamondoid components and at least about 0.5 weight percent of non-ionized pentamantane components and higher diamondoid components based on the total weight of diamondoid components present.Type: GrantFiled: December 12, 2001Date of Patent: January 18, 2005Assignee: Chevron U.S.A. Inc.Inventors: Jeremy E. Dahl, Robert M. Carlson
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Patent number: 6831202Abstract: Disclosed are compositions comprising one or more octamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more octamantanes. Also disclosed are novel processes for the separation and isolation of octamantane components into recoverable fractions from a feedstock containing at least a higher diamondoid component which contains one or more octamantane components.Type: GrantFiled: December 12, 2001Date of Patent: December 14, 2004Assignee: Chevron U.S.A. Inc.Inventors: Jeremy E. Dahl, Robert M. Carlson
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Patent number: 6828469Abstract: Disclosed are compositions comprising one or more heptamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more heptamantanes. Also disclosed are novel processes for the separation and isolation of heptamantane components into recoverable fractions from a feedstock containing at least a higher diamondoid component which contains one or more heptamantane components.Type: GrantFiled: December 12, 2001Date of Patent: December 7, 2004Assignee: Chevron U.S.A. Inc.Inventors: Jeremy E. Dahl, Robert M. Carlson
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Patent number: 6815569Abstract: Disclosed are compositions comprising one or more tetramantanes. Specifically disclosed are compositions comprising 10 to 100 weight percent of one or more tetramantanes. Also disclosed are novel processes for the separation and isolation of tetramantane components into recoverable fractions from a feedstock containing at least a higher diamondoid component which contains one or more tetramantane components.Type: GrantFiled: December 12, 2001Date of Patent: November 9, 2004Assignee: Chevron U.S.A. Inc.Inventors: Jeremy E. Dahl, Robert M. Carlson
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Patent number: 6812371Abstract: Disclosed are compositions comprising one or more nonamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more nonamantanes. Also disclosed are novel processes for the separation and isolation of nonamantane components into recoverable fractions from a feedstock containing at least a higher diamondoid component which contains one or more nonamantane components.Type: GrantFiled: December 12, 2001Date of Patent: November 2, 2004Assignee: Chevron U.S.A. Inc.Inventors: Jeremy E. Dahl, Robert M. Carlson
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Patent number: 6812370Abstract: Disclosed are compositions comprising one or more hexamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more hexamantanes. Also disclosed are novel processes for the separation and isolation of hexamantane components into recoverable fractions from a feedstock containing at least a higher diamondoid component which contains one or more hexamantane components.Type: GrantFiled: December 12, 2001Date of Patent: November 2, 2004Assignee: Chevron U.S.A. Inc.Inventors: Jeremy E. Dahl, Robert M. Carlson
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Patent number: 6784328Abstract: The invention relates to a method of selectively producing adamantanes in a production apparatus made of an inexpensive material, not having any negative influence on the natural environment. The method for producing adamantanes includes isomerizing a tricyclic saturated hydrocarbon having at least 10 carbon atoms in the presence of a metal-carrying solid acid catalyst, wherein an unsaturated bond-having compound is made to coexist along with the catalyst during the isomerization.Type: GrantFiled: March 4, 2003Date of Patent: August 31, 2004Assignee: Idemitsu Petrochemical Co., Ltd.Inventors: Akio Kojima, Masao Saito
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Publication number: 20040054243Abstract: Hydroprocessing such as hydrocracking is advantageously employed in processes for the recovery and purification of higher diamondoids from petroleum feedstocks. Hydrocracking and other hydroprocesses degrade nondiamondoid contaminants.Type: ApplicationFiled: July 16, 2003Publication date: March 18, 2004Applicant: CHEVRON USA INC.Inventors: Theo Maesen, Robert M. Carlson, Jeremy E. Dahl, Shenggao Liu, Hye Kyung C. Timken, Waqar R. Qureshi
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Publication number: 20030181773Abstract: The invention relates to a method of selectively producing adamantanes in a production apparatus made of an inexpensive material, not having any negative influence on the natural environment. The method for producing adamantanes includes isomerizing a tricyclic saturated hydrocarbon having at least 10 carbon atoms in the presence of a metal-carrying solid acid catalyst, wherein an unsaturated bond-having compound is made to coexist along with the catalyst during the isomerization.Type: ApplicationFiled: March 4, 2003Publication date: September 25, 2003Inventors: Akio Kojima, Masao Saito
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Publication number: 20030100808Abstract: Disclosed are compositions comprising one or more nonamantanes. Specifically disclosed are compositions comprising 25 to 100 weight percent of one or more nonamantanes. Also disclosed are novel processes for the separation and isolation of nonamantane components into recoverable fractions from a feedstock containing at least a higher diamondoid component which contains one or more nonamantane components.Type: ApplicationFiled: December 12, 2001Publication date: May 29, 2003Inventors: Jeremy E. Dahl, Robert M. Carlson