Dinitro Patents (Class 568/711)
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Patent number: 8637712Abstract: Precipitations of nitrohydroxyaromatic salts out of the nitrated crude products obtained in the nitration of aromatic compounds after alkaline scrubbing, for example mononitrotoluenes, are prevented by contacting the nitrated crude products with an acidic ion exchanger. The nitrated crude products are preferably selected from a feedstream to a distillation column, a bottoms circulation stream of a distillation column and a feedstream to a vaporizer.Type: GrantFiled: January 31, 2012Date of Patent: January 28, 2014Assignee: BASF SEInventors: Holger Allardt, Andreas Raichle, Reiner Reetz, Johannes Büttner, Michael Zöllinger, Stefanie Haase, Rüdiger Fritz
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Publication number: 20120197047Abstract: Precipitations of nitrohydroxyaromatic salts out of the nitrated crude products obtained in the nitration of aromatic compounds after alkaline scrubbing, for example mononitrotoluenes, are prevented by contacting the nitrated crude products with an acidic ion exchanger. The nitrated crude products are preferably selected from a feedstream to a distillation column, a bottoms circulation stream of a distillation column and a feedstream to a vaporizer.Type: ApplicationFiled: January 31, 2012Publication date: August 2, 2012Applicant: BASF SEInventors: Holger ALLARDT, Andreas RAICHLE, Reiner REETZ, Johannes BÜTTNER, Michael ZÖLLINGER, Stefanie HAASE, Rüdiger FRITZ
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Publication number: 20100248218Abstract: The invention relates to methods for the quantitative and qualitative detection of an analyte in an assay as well as appropriate reagents therefor, especially a carrier molecule to which one or several analyte-specific binding partners are bound and which is provided with additional binding points for a specific binding partner X or Y that is associated with a component of a signal-forming system. Also disclosed is the use of such a conjugate particularly in homogeneous binding tests.Type: ApplicationFiled: May 31, 2006Publication date: September 30, 2010Inventors: Carsten Schelp, Pratap Singh, Michael Trier, Harald Ackermann, Susan C. Swann, Lee Hall
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Patent number: 7531702Abstract: An environmentally friendly picric acid explosive comprising, providing a nitromalondialdehyde, providing a dinitroketone, reacting the nitromalondialdehydes with the dinitroketone to produce a mixture, and subjecting the mixture to a cyclodehydrative mechanism to produce environmentally friendly picric acid explosive. Embodiments of the present invention include the picric acid explosive produced by the methods of described above.Type: GrantFiled: July 23, 2007Date of Patent: May 12, 2009Assignee: The United States of America as represented by the Secretary of the NavyInventor: Matthew C. Davis
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Patent number: 6960696Abstract: An environmentally friendly methods for making 2,4-dinitrophenyl compound comprising, providing a nitromalondialdehyde, providing a nitroacetone, reacting the nitromalondialdehydes with the nitroacetone to produce a mixture, and subjecting the mixture to a cyclodehydrative mechanism to produce environmentally friendly 2,4-dinitrophenyl compound. Embodiments of the present invention include the 2,4-dinitrophenyl compound produced by the methods of described above.Type: GrantFiled: July 29, 2004Date of Patent: November 1, 2005Assignee: The United States of America as represented by the Secretary of the NavyInventor: Matthew C. Davis
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Publication number: 20030100698Abstract: Materials for dielectrics and/or buffer layers in microelectronics utilize polymers can be based on bis-o-nitrophenols. The bis-o-nitrophenols carry a tert-butoxycarbonyl group on at least one of the hydroxyl groups. The polybenzoxazoles prepared from these compounds have a lower dielectric constant than corresponding polymers which are prepared from bis-o-nitrophenols that do not have a tert-butoxycarbonyl group.Type: ApplicationFiled: September 16, 2002Publication date: May 29, 2003Inventor: Recai Sezi
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Patent number: 6359180Abstract: The present invention relates to a novel production method of 4,6-diaminoresorcin, and to 2-sulfonic acid-4,6-dinitroresorcin as its intermediate and salts thereof.Type: GrantFiled: April 21, 2000Date of Patent: March 19, 2002Assignee: Mitsui Chemicals, IncorporatedInventors: Yukihiro Kumamoto, Masahiko Kusumoto, Hisato Itou, Hideki Mizuta, Masazumi Takaoka
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Patent number: 6339177Abstract: A vinyl monomer inhibitor systems is disclosed which includes 2,6-dinitro-4-alkylated phenols and mixtures of 2,6-dinitro-4-alkylated phenols and 2,4-dinitro-6-alkylated phenols as well as vinyl monomer stabilized composition including an effective amount of the inhibitor systems. A method for the preparation and use is also disclosed where phenol is first alkylated under conditions that afford predominately monoalkylated phenols having a high para alkylation preference, followed by nitration of the alkylated phenols to form a dinitrated, monoalkylated product.Type: GrantFiled: May 24, 2000Date of Patent: January 15, 2002Assignee: Sea Lion Technology, Inc.Inventor: Lee H. Bergman
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Patent number: 5874654Abstract: Environmentally-polluting nitrocresol values are removed from admixtures of nitroaromatic compounds comprised thereof, notably the media of nitration of aromatic compounds by reacting same with aqueous HNO.sub.3 /H.sub.2 SO.sub.4, by first intimately contacting such nitroaromatic compound admixtures with an oxidizing agent comprising hydrogen peroxide, javelle water, or mixture thereof, and thereafter with a neutralizing agent; the nitroaromatic aromatic compounds thus purified are conveniently catalytically hydrogenated into aromatic amines.Type: GrantFiled: September 19, 1997Date of Patent: February 23, 1999Assignee: Rhone Poulenc ChimieInventors: Antoinette Gacon-Camoz, Pascal Metivier
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Patent number: 5602283Abstract: A multistage process of preparing N-alkyl-3,4-dialkyl-2,6-dinitroanilines starts from 3,4-dialkyl phenol and goes through the stages of 3,4-dialkyl-2,6-dinitrophenol and 3,4-dialkyl-2,6-ditro alkoxybenzene, wherein the latter are new compounds.Type: GrantFiled: May 23, 1995Date of Patent: February 11, 1997Assignee: Agan Chemical Manufacturers Ltd.Inventor: Morris Sarel
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Patent number: 5475148Abstract: The intermediate ##STR1## wherein R is a lower alkyl group, is used to prepare a N-alkyl-3,4-dialkyl-2,6,-dinitro-aniline in a relatively simple, inexpensive and safe fashion, and with a high yield.Type: GrantFiled: June 23, 1994Date of Patent: December 12, 1995Assignee: Agan Chemical Manufacturers Ltd.Inventor: Morris Sarel
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Patent number: 5371303Abstract: 4,6-Dinitroresorcinol is prepared by reacting resorcinol with concentrated nitric acid that is substantially free of suboxides of nitric acid. It has been found that greater than 60 percent yields of the desired product can be obtained when the concentration of aqueous nitric acid used is between about 80 and about 93 weight percent, and the concentration of suboxides is less than about 2 weight percent based on the weight of nitric acid.Type: GrantFiled: March 16, 1994Date of Patent: December 6, 1994Assignee: The Dow Chemical CompanyInventors: William J. Kruper, Zenon Lysenko, John W. Hull, Jr., George J. Frycek
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Patent number: 5283352Abstract: Catechol compounds of formula I ##STR1## where R.sub.1, R.sub.2, R.sub.3 and X are as described herein are effective Catechol-O-methyltransferase inhibitors.Type: GrantFiled: December 7, 1992Date of Patent: February 1, 1994Assignee: Orion-yhtyma OyInventors: Reijo J. Backstrom, Kalevi E. Heinola, Erkki J. Honkanen, Seppo K. Kaakkola, Pekka J. Kairisalo, Inge-Britt Y. Linden, Pekka I. Mannisto, Erkki A. O. Nissinen, Pentti Pohto, Aino K. Pippuri, Jarmo J. Pystynen
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Patent number: 5070197Abstract: A method of preparing a water-soluble or water-dispersible pesticidal composition is described. The pesticidal composition is prepared in a continuous process by intimately mixing a Bronsted acid precursor of the pesticidally active compound with a Bronsted base under reaction conditions in an extruder. The reaction is performed with minimal solvent and under conditions where the water of reaction volatilizes during the course of the reaction.Type: GrantFiled: April 12, 1989Date of Patent: December 3, 1991Assignee: Uniroyal Chemical Company, Inc.Inventors: James Chin, James B. Marshall, Michael D. Drozdick, Fred C. Rosa, Frederick D. Judge
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Patent number: 4982001Abstract: High purity amino-1,3-benzenediols are prepared by (a) contacting a 1,3-bis(alkylcarbonato)benzene with a nitrating agent under reaction conditions such that a 1,3-bis(alkylcarbonato)nitrobenzene is formed, (b) contacting the 1,3-bis(alkylcarbonato)nitrobenzene with a hydrolyzing agent under conditions such that a nitro-1,3-benzenediol is produced, and (c) contacting the nitro-1,3-benzenediol with a reducing agent under conditions such that an amino-1,3-benzenediol is produced. Of the amino-1,3-benzenediols, 4,6-diamino-1,3-benzenediol is particularly useful in the preparation of high molecular weight polybenzoxazoles.Type: GrantFiled: December 27, 1988Date of Patent: January 1, 1991Assignee: The Dow Chemical CompanyInventors: Zenon Lysenko, Cynthia L. Rand
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Patent number: 4962198Abstract: The invention relates to a generally applicable process for the hydroxylation of electrophilic aromatic compounds, according to which the electrophilic aromatic compounds are reacted with organic hydroperoxides in the presence of bases.Type: GrantFiled: July 7, 1989Date of Patent: October 9, 1990Assignee: Bayer AktiengesellschaftInventors: Mieczyslaw Makosza, Krzysztof Sienkiewicz
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Patent number: 4912246Abstract: High purity amino-1,3-benzenediols are prepared by (a) contacting a 1,3-bis(alkylcarbonato)benzene with a nitrating agent under rection conditions such that a 1,3-bis(alkylcarbonato)nitrobenzene is formed, (b) contacting the 1,3-bis(alkylcarbonato)nitrobenzene with a hydrolyzing agent under conditions such that a nitro-1,3-benzenediol is produced, and (c) contacting the nitro-1,3-benzenediol with a reducing agent under conditions such that an amino-1,3-benzenediol is produced. Of the amino-1,3-benzenediols, 4,6-diamino-1,3-benzenediol is particularly useful in the preparation of high molecular weight polybenzoxazoles.Type: GrantFiled: October 19, 1987Date of Patent: March 27, 1990Assignee: The Dow Chemical CompanyInventors: Zenon Lysenko, Cynthia L. Rand
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Patent number: 4766244Abstract: High purity 4,6-dinitro-1,3-benzenediol is prepared by (a) contacting a 1,2,3-trihalobenzene with a nitrating agent and an acid under reaction conditions such that a 1,2,3-trihalo-4,6-dinitrobenzene is produced, (b) contacting the 1,2,3-trihalo-4,6-dinitrobenzene prepared in (a) with an alkanol and a base under reaction conditions such that a 4,6-dinitro-2-halo-1,3-benzenediol is produced, and (c) contacting the 4,6-dinitro-2-halo-1,3-benzenediol prepared in (b) with a hydrogenating agent in the presence of a solvent and a catalyst under reaction conditions such that a 4,6-diamino-1,3-benzenediol is produced. This 4,6-diamino-1,3-benzenediol is useful in the preparation of high molecular weight polybenzoxazoles.Type: GrantFiled: October 30, 1986Date of Patent: August 23, 1988Assignee: The Dow Chemical CompanyInventor: Zenon Lysenko
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Patent number: 4745232Abstract: A method of nitrating resorcinol which is selective for the production of the 4,6-dinitro resorcinal isomer. A resorcinol-based starting material is admixed with a nitrating solution from which substantially all nitrogen dioxide and nitrous has been removed. The nitrating solution contains white fuming nitric acid, a nitrosonium ion control agent such as urea, and, optionally, concentrated sulfuric acid. The 4,6-dinitroresorcinal isomer is provided in yields of about 65-85% with minimal production of undesirable side products.Type: GrantFiled: January 7, 1987Date of Patent: May 17, 1988Assignee: SRI InternationalInventors: Robert J. Schmitt, David S. Ross, James F. Wolfe
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Patent number: 4664845Abstract: Compositions, comprised of a dinitrophenol in an aromatic hydrocarbon solvent, which compositions further comprise a sufficient amount of a phenylenediamine such that a greater amount of dinitrophenol is in solution than would be present in solution if such phenylenediamine were not present, exhibit unexpectedly desirable low temperature stability, and may be diluted with additional solvent to be employed as polymerization inhibitors for vinyl aromatic compounds.Type: GrantFiled: January 19, 1986Date of Patent: May 12, 1987Assignee: Uniroyal Chemical Company, Inc.Inventors: Elmar H. Jancis, Paul E. Stott
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Patent number: 4581178Abstract: Low valent transition metal complexes containing small cone angle phosphine or arsine ligands efficiently catalyze addition of aldehydes to compounds or groups having a C--H bond activated by a nitro or nitrile group, to provide nitroalcohols or cyanohydrins, respectively.Type: GrantFiled: February 28, 1985Date of Patent: April 8, 1986Assignee: E. I. Du Pont de Nemours and CompanyInventor: David Milstein
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Patent number: 4540832Abstract: A process for the preparation of 6-chloro-2,4-dinitrophenol in a high yield and in a high degree of purity by saponifying 2,4-dinitrochlorobenzene and/or 2,4-dinitrophenyl alkyl ethers of the formula ##STR1## in which m denotes the number 2, 3 or 4 and n denotes the number 1 or 2, by means of aqueous sodium hydroxide or potassium hydroxide solution and chlorinating the resulting 2,4-dinitrophenol with sodium hypochlorite, which comprises chlorinating the 2,4-dinitrophenol, without prior isolation as an intermediate, in aqueous suspension at a pH value of 3.5-7 by means of chlorine bleach liquor at temperatures of 5.degree. to 20.degree. C.Type: GrantFiled: April 26, 1984Date of Patent: September 10, 1985Assignee: Hoechst AktiengesellschaftInventors: Otto Arndt, Theodor Papenfuhs
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Patent number: 4538006Abstract: 4-(2,4-Dinitrophenyl)phenols are prepared by reacting a 1,3-dinitrobenzene having a replaceable hydrogen in the 4-position with a phenol having a replaceable hydrogen in the 4-position in an inert solvent and in the presence of a strong base. The 1,3-dinitrobenzene and phenol may be substituted or unsubstituted, and preferred phenols include phenol and 2,6-dialkylphenols.Type: GrantFiled: May 4, 1984Date of Patent: August 27, 1985Assignee: Ethyl CorporationInventor: G. Patrick Stahly
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Patent number: 4524222Abstract: Dinitro alkyl phenols are produced free of tar when the precursor orthoalkylphenol is contacted with a molecular sieve prior to sulfonation, nitration, and air drying. The dinitro alkylphenols produced are free of tars or similar resins and avoid processing problems that are shown in impure prior art products.Type: GrantFiled: January 26, 1984Date of Patent: June 18, 1985Assignee: Ethyl CorporationInventor: Charles F. Weidig
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Patent number: 4473713Abstract: At least one of the other functions comprising an aryl-aliphatic ether, e.g., veratrol, is catalytically hydrolyzed with water, e.g., to guaiacol, in the presence of a catalytically effective amount of a salt of a carboxylic acid.Type: GrantFiled: September 27, 1982Date of Patent: September 25, 1984Assignee: Rhone-Poulenc Specialites ChimiquesInventor: Serge Ratton
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Patent number: 4439374Abstract: The sulfonation of o-alkylphenols by reaction with sulfuric acid is improved to give higher conversion to disulfonated o-alkylphenol by adding a small amount of a polybasic carboxylic acid (e.g. oxalic acid) to the o-alkylphenol. The sulfonated product is converted to a dinitro-o-alkylphenol by reaction with nitric acid or salt thereof.Type: GrantFiled: June 28, 1982Date of Patent: March 27, 1984Assignee: Ethyl CorporationInventors: Lester P. J. Burton, Ronald L. Shubkin
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Patent number: 4434304Abstract: A one pot process for the preparation of trinitrophloroglucinol by the addition of a nitric acid and sulfuric acid mixture to phloroglucinol in sulfuric acid where the nitric acid and phloroglucinol are present in stoichiometric amounts.Type: GrantFiled: October 15, 1982Date of Patent: February 28, 1984Assignee: The United States of America as represented by the Secretary of the NavyInventors: Albert A. DeFusco, Jr., Arnold T. Nielsen, Ronald L. Atkins
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Patent number: 4360469Abstract: It has been found that unexpectedly high yields of a high purity product can be obtained when substituted p-quinones are prepared by oxidation, using a molecular oxygen-containing gas, of the corresponding phenols in an inert solvent having a dipole moment of at least 2.7 and in the presence of a salcomine catalyst.Type: GrantFiled: June 11, 1970Date of Patent: November 23, 1982Assignee: Eastman Kodak CompanyInventors: Hans K. Dietl, Howard S. Young
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Patent number: 4347148Abstract: Nitro phenols of the general formula ##STR1## wherein R is an aliphatic substituent of at least about 40 carbon atoms, a, b and c are, for example, each 1, 2 or 3, and Ar is an aromatic moiety such as a benzene nucleus, naphthalene nucleus or linked benzene nuclei, are useful additives for fuels and lubricants and intermediates to such additives. These nitro phenols can be conveniently prepared by nitrating appropriate phenols. Typically nitro phenols are formed by nitration of alkyl phenols having an alkyl group of at least about 50 carbon atoms.Type: GrantFiled: November 19, 1979Date of Patent: August 31, 1982Assignee: The Lubrizol CorporationInventor: Kirk E. Davis
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Patent number: 4283565Abstract: There is described an essentially two step process for the preparation of benzylalcohols including those benzylalcohols having substituents on the benzyene ring by reaction of a substituted or unsubstituted benzyl halide with a formate typically an alkali or alkaline earth metal formate to form the corresponding substituted or unsubstituted benzyl formate. In the second step of the process the benzyl formate is contacted with an alcohol whereby the same is converted into the desired benzylalcohol. Both steps can be performed employing catalysts. Described in the specification is the realization of the desired product in exceptionally high yields in a short period of time whereby the process is characterized by high space-time yields.Type: GrantFiled: December 29, 1978Date of Patent: August 11, 1981Assignee: Dynamit Nobel AGInventors: Gunther Bernhardt, Gerhard Daum
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Patent number: 4282160Abstract: The present invention is concerned with novel compounds useful in photographic products and processes comprising triarylmethane dyes possessing in their triaryl structure a 4'-oxo-1'-naphthylidene (or a 4'-oxo-1'-phenylidene) moiety and a phenyl moiety substituted in the ortho-position to the central carbon atom with the group ##STR1## wherein R is an alkyl group or a phenyl group, unsubstituted or substituted with a solubilizing group and Y is an electron-withdrawing group.Type: GrantFiled: May 22, 1980Date of Patent: August 4, 1981Assignee: Polaroid CorporationInventor: James W. Foley
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Patent number: 4224244Abstract: Novel 9-phenyl 5,6-dimethyl-nona-2,4,6,8-tetraenoic acid, tetraenal or tetraenol derivatives useful as anti-tumor agents.Type: GrantFiled: May 9, 1979Date of Patent: September 23, 1980Assignee: Hoffmann-La Roche Inc.Inventors: Werner Bollag, Rudolf Ruegg, Gottlieb Ryser
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Patent number: 4101591Abstract: Haloloweralkyl ethynylbenzene compounds and their derivatives which are useful for the treatment for the relief of inflammation, pain and fever.Type: GrantFiled: November 23, 1976Date of Patent: July 18, 1978Assignee: William H. Rorer, Inc.Inventor: Julius Diamond
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Patent number: RE34745Abstract: High purity 4,6-dinitro-1,3-benzenediol is prepared by (a) contacting a 1,2,3-trihalobenzene with a nitrating agent and an acid under reaction conditions such that a 1,2,3-trihalo-4,6-dinitrobenzene is produced, (b) contacting the 1,2,3-trihalo-4,6-dinitrobenzene prepared in (a) with an alkanol and a base under reaction conditions such that as 4,6-dinitro-2-halo-1,3-benzendiol is produced, and (c) contacting the 4,6-dinitro-2-halo-1,3-benzenediol prepared in (b) with a hydrogenating agent in the presence of a solvent and a catalyst under reaction conditions such that a 4,6-diamino-1,3-benzendiol is produced. This 4,6-diamino-1,3-benzene diol is useful in the preparation of high molecular weight polybenzoxazoles.Type: GrantFiled: November 9, 1992Date of Patent: September 27, 1994Assignee: The Dow Chemical CompanyInventor: Zenon Lysenko