Polyhydroxy Nitro Containing Patents (Class 568/712)
  • Patent number: 9506729
    Abstract: A low-cost, reliable and easy to use kit for neutralizing surface exposed landmine and unexploded ordnance for humanitarian demining is based on a liquid fuel and a solid/soluble fuel. Both fuels are premeasured in separate, sealed containers. The addition of a small quantity of solid/soluble fuel into the liquid creates an explosive. The resulting mixture is capable of detonating with a standard No. 8 blasting cap. The solid/soluble fuel can be in the form of a powder, tablet, or its saturated solution in water. The solid/soluble fuel is hexamethylenetetramine. The liquid fuel, nitromethane, is provided in premeasured quantities. User is provided instructions for choosing the appropriate quantity of liquid fuel, the corresponding solid/soluble fuel required, the method of mixing, placement and detonation of the kits. Also disclosed is a simple wooden stand to hold the bottle of explosive in place. A special fuel, liquid 2-ethylhexylnitrate, is provided to desensitize the mixed and sensitized explosive.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: November 29, 2016
    Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE ARMY
    Inventor: Divyakant L. Patel
  • Patent number: 8993638
    Abstract: Provided are biocidal compositions comprising: tris(hydroxymethyl)nitromethane; and a brominated nitroalkanol compound of formula I: wherein R1, R2, and R3 are as defined herein. The compositions are useful for controlling microorganisms in aqueous or water-containing systems.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: March 31, 2015
    Assignee: Dow Global Technologies LLC
    Inventor: Bei Yin
  • Patent number: 8859819
    Abstract: The present invention relates to a compound of the general formula (I) where: X?S, SO or SO2; and one of the radicals R1 and R2 is a hydrogen atom and the other is a radical: a C1 to C18 linear or branched alkyl, optionally substituted by one or more halogen atom(s); a C2 to C18 linear or branched alkenyl, optionally substituted by one or more halogen atom(s); an aralkyl, optionally substituted by one or more C1 to C6 alkoxy group(s); or a COR3 or CONHR3, but not simultaneously, where R3 is a radical: a C1 to C18 linear or branched alkyl, optionally substituted by one or more halogen atom(s); a C2 to C18 linear or branched alkenyl, optionally substituted by one or more halogen atom(s); an aralkyl, optionally substituted by one or more C1 to C6 alkoxy group(s); an aralkenyl, optionally substituted by one or more C1 to C6 alkoxy groups and/or one or more OH group(s); or an aryl radical, optionally substituted by one or more C1 to C6 alkoxy group(s).
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: October 14, 2014
    Assignee: Pierre Fabre Dermo-Cosmetique
    Inventor: Stéphane Poigny
  • Patent number: 8729314
    Abstract: The invention provides a process for preparing bronopol, which process comprises charging a reaction vessel with water, bromopicrin, nitromethane and paraformaldehyde, gradually feeding a base into said reaction vessel under stirring, bringing the reaction to completion and separating bronopol from the aqueous reaction mixture.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: May 20, 2014
    Assignee: Bromine Compounds Ltd.
    Inventor: Jacob Oren
  • Patent number: 8692031
    Abstract: A method for preparing a compound having formula (II) wherein R1 and R2 independently are methyl or ethyl, or R1 and R2 combine to form a C5 or C6 cycloalkyl or cycloalkenyl group. The method includes a step of combining R1R2CHNO2, glutaraldehyde and an amine. The compound is useful in coating compositions and other applications for pH adjustment.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: April 8, 2014
    Assignees: Dow Global Technologies LLC, ANGUS Chemical Company
    Inventors: Ian Anthony Tomlinson, Glenn Nelson Robinson, Asghar Akber Peera
  • Publication number: 20140087978
    Abstract: A method of converting an inactive biocide into an active biocide comprises: contacting the inactive biocide with an activating agent, wherein the activating agent is capable of chemically reacting with the inactive biocide; and causing or allowing a chemical reaction to take place between the inactive biocide and the activating agent, wherein the chemical reaction produces the active biocide. The methods can also include deactivating the active biocide via a chemical reaction between the active biocide and a deactivating agent.
    Type: Application
    Filed: September 27, 2012
    Publication date: March 27, 2014
    Applicant: HALLIBURTON ENERGY SERVICES, INC
    Inventor: Jay P. DEVILLE
  • Publication number: 20140066662
    Abstract: The invention provides a process for preparing bronopol, which process comprises charging a reaction vessel with water, bromopicrin, nitromethane and paraformaldehyde, gradually feeding a base into said reaction vessel under stirring, bringing the reaction to completion and separating bronopol from the aqueous reaction mixture.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 6, 2014
    Inventor: Jacob OREN
  • Patent number: 8609880
    Abstract: A process for the preparation of an energetic nitrate ester compound and related intermediates is provided.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: December 17, 2013
    Inventors: David E. Chavez, Darren L. Naud, Michael A. Hiskey
  • Patent number: 8546619
    Abstract: The invention provides a process for preparing bronopol, which process comprises charging a reaction vessel with water, bromopicrin, nitromethane and paraformaldehyde, gradually feeding a base into said reaction vessel under stirring, bringing the reaction to completion and separating bronopol from the aqueous reaction mixture.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: October 1, 2013
    Assignee: Bromine Compounds Ltd.
    Inventor: Jacob Oren
  • Patent number: 8324421
    Abstract: Preparation of an energetic nitrate ester compound and related intermediates is provided.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: December 4, 2012
    Assignee: U.S. Department of Energy
    Inventors: David E. Chavez, Darren L. Naud, Michael A. Hiskey
  • Publication number: 20120202934
    Abstract: A method for preparing a compound having formula (II) wherein R1 and R2 independently are methyl or ethyl, or R1 and R2 combine to form a C5 or C6 cycloalkyl or cycloalkenyl group. The method includes a step of combining R1R2CHNO2, glutaraldehyde and an amine. The compound is useful in coating compositions and other applications for pH adjustment.
    Type: Application
    Filed: October 8, 2010
    Publication date: August 9, 2012
    Inventors: Ian Anthony Tomlinson, Glenn Nelson Robinson, Asghar Akber Peera
  • Publication number: 20120108838
    Abstract: Preparation of an energetic nitrate ester compound and related intermediates is provided.
    Type: Application
    Filed: September 24, 2009
    Publication date: May 3, 2012
    Applicant: US Department of Energy
    Inventors: David E. Chavez, Darren L. Naud, Michael A. Hiskey
  • Publication number: 20110159304
    Abstract: Disclosed are a composition for inhibiting a proliferation of sulphate reducing bacteria comprising at least one of 1,2-benzisothiazol-3(2H)-one, irgasan, benzyl-2-bromoacetate, 2,2-dibromo-2-cyanoacetamide, and 2-bromo-2-nitropropan-1,3-diol as effective ingredients; a method for inhibiting the proliferation of sulphate reducing bacteria comprising the step of including a sufficient amount for inhibiting the proliferation of sulphate reducing bacteria of at least one of 1,2-benzisothiazol-3(2H)-one, irgasan, benzyl-2-bromoacetate, 2,2-dibromo-2-cyanoacetamide, and 2-bromo-2-nitropropan-1,3-diol in a corrosion sensitive material or degradation sensitive material; a sheet comprising the composition; and a steel plate to which the composition is applied.
    Type: Application
    Filed: June 2, 2010
    Publication date: June 30, 2011
    Applicant: KOREA GAS CORPORATION
    Inventors: Hong Seok Song, Young Geun Kim, Keun Chang Ryu, Young Min Baek, Young Hyo Chang
  • Publication number: 20110065964
    Abstract: The invention provides a process for preparing bronopol, which process comprises charging a reaction vessel with water, bromopicrin, nitromethane and paraformaldehyde, gradually feeding a base into said reaction vessel under stirring, bringing the reaction to completion and separating bronopol from the aqueous reaction mixture.
    Type: Application
    Filed: February 26, 2009
    Publication date: March 17, 2011
    Inventor: Jacob Oren
  • Publication number: 20100239678
    Abstract: The present invention is directed to attaching drugs 11 and other functional groups to surfaces of nano-sized diamond particles (NDs) 20 to enhance their efficacy. The method involves hydrating a plurality of nanodiamond (ND) particles 20 having a plurality of carbon chain surface molecules 23 on its surface. Cations 40 are embedded within the lattice structure 21 of the surface molecules 23 of the ND particles 20. The embedded cations 40 attract anions that cause crystalline growth. The anion form of drug molecules 11 are then grown on the crystal to cause the NDs 20 to be coated such that the active sites of said drug molecules 11 point away from the ND particle 20 exposing them for enhanced activity and enhanced drug efficacy. The efficacy of antimicrobial drugs 11, as well as other drugs 11 are enhanced by their attachment to the NDs 20.
    Type: Application
    Filed: June 7, 2010
    Publication date: September 23, 2010
    Inventor: Ali RAZAVI
  • Patent number: 7655819
    Abstract: A polymer that contains an antimicrobial, bioresistant and fungal resistant moiety that is linked into the backbone of the polymer. The moiety is a bromine atom and a nitro group linked to one or more of the carbon atoms forming the backbone. The moiety can appear in the polymer chain in various levels of occurrence from 5 ppm to has high as 100% with a normal occurrence of between 1000 ppm to 20,000 ppm. Polymer types that can be created with this moiety to display these properties include, but are not limited to, polyurethane, polyurea, polyamide, polyester, polycarbonate, polyether, polysiloxane, epoxy, polyacrylic, polyacrylate, polyvinyl.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: February 2, 2010
    Assignee: TPAT IP LLC
    Inventor: Thomas Daly
  • Patent number: 7414160
    Abstract: A process produces an aromatic compound by bringing an aromatic compound (B) into contact with molecular oxygen (C) in the presence of a catalyst (A) comprising at least one of (A1) a heteropolyacid and/or a salt thereof, and (A2) a mixture of oxoacids and/or salts thereof containing, as a whole, one of P and Si and at least one selected from V, Mo and W to thereby yield another aromatic compound (G) than the aromatic compound (B). The process can produce, for example, a corresponding aromatic hydroxy compound (G1) by allowing the aromatic compound (B) to react with the molecular oxygen (C) further in the presence of a reducing agent (D).
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: August 19, 2008
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Yasutaka Ishii, Tatsuya Nakano
  • Publication number: 20070287105
    Abstract: A process for forming a resist pattern comprises the steps of applying on a substrate to form a photosensitive resist layer a photosensitive composition comprising at least one photosensitive compound having, in the molecule, two or more structural units represented by C6R2-6—CHR1—OR7 or C6R2-6—CHR1—COOR7 where R1 is a hydrogen atom or an alkyl group, at least one of R2, R3, R4, R5, and R6 is a nitro group, and others are selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl, an alkoxy, a phenyl, a naphthyl, and an alkyl in which a part or the entire of hydrogen atoms are substituted by a fluorine atom, and R7 is a substituted or unsubstituted phenylene or naphthylene group dissolved in an organic solvent, irradiating the resist layer selectively with a radiation ray, and developing a portion irradiated by the ray to form a pattern of the resist layer.
    Type: Application
    Filed: May 10, 2007
    Publication date: December 13, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toshiki Ito, Takako Yamaguchi
  • Patent number: 7019179
    Abstract: A process produces an aromatic compound by bringing an aromatic compound (B) into contact with molecular oxygen (C) in the presence of a catalyst (A) comprising at least one of (A1) a heteropolyacid and/or a salt thereof, and (A2) a mixture of oxoacids and/or salts thereof containing, as a whole, one of P and Si and at least one selected from V, Mo and W to thereby yield another aromatic compound (G) than the aromatic compound (B). The process can produce, for example, a corresponding aromatic hydroxy compound (G1) by allowing the aromatic compound (B) to react with the molecular oxygen (C) further in the presence of a reducing agent (D).
    Type: Grant
    Filed: March 6, 2003
    Date of Patent: March 28, 2006
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Yasutaka Ishii, Tatsuya Nakano
  • Publication number: 20040186326
    Abstract: In a process for the continuous preparation of 2-bromo-2-nitro-1,3-propanediol, nitromethane is firstly reacted with formaldehyde and alkali metal hydroxide and the reaction mixture obtained in this way is subsequently reacted with bromine.
    Type: Application
    Filed: January 29, 2004
    Publication date: September 23, 2004
    Inventors: Gunter Scherr, Thomas Bogenstatter, Jurgen Huff
  • Patent number: 6610889
    Abstract: Methods and compositions are provided for the direct catalytic asymmetric aldol reaction of aldehydes with donor molecules selected from ketones and nitroalkyl compounds. The reactions employ as catalyst a Group 2A or Group 2B metal complex of a ligand of formula I, as defined further herein.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: August 26, 2003
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Barry M. Trost, Hisanaka Ito
  • Patent number: 6599952
    Abstract: This invention relates to a process for the preparation an epoxide-reactive compound having a functionality of at least 3, a molecular weight of from about 250 to about 1,900, and an OH number of from about 85 to about 1,400. This process comprises reacting (a) an organic compound which is free of ether groups, having a molecular weight of from about 60 to about 600, and containing from about 2 to about 8 reactive sites; with (b) cyanuric chloride; optionally, in the presence of (c) one or more catalysts; wherein the functionality of the resultant epoxide-reactive compound equals three times the functionality of (a) said organic compound minus three. This invention also relates to further reacting the epoxide-reactive compound produced by the above process with an alkylene oxide, optionally in the presence of a catalyst to form a polyether polyol having a functionality of at least about 3, a molecular weight of from about 300 to about 18,000, and an OH number of from about 10 to about 565.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: July 29, 2003
    Assignee: Bayer Corporation
    Inventors: Rick L. Adkins, Harold R. Parsons
  • Patent number: 6548564
    Abstract: This invention relates to a process for the preparation of a polyether polyol having a functionality of at least about 3, a molecular weight of from about 560 to about 35,000 and an OH number of from about 10 to about 1,100. This process comprises reacting (a) a polyether polyol containing one or more ether groups, having a functionality of about 2 to about 8, a molecular weight of about 106 to about 12,000, and an OH number of about 28 to about 1,400, with (b) cyanuric chloride, optionally, in the presence of (c) one or more catalysts; wherein the functionality of the resultant polyether polyols equals three times the functionality of (a) said polyether polyol, minus three.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: April 15, 2003
    Assignee: Bayer Corporation
    Inventors: Rick L. Adkins, Harold R. Parsons
  • Patent number: 6344505
    Abstract: Provided is a composition which contains a mono- or bis-benzotriazole compound, an N-oxide thereof, or a mixture of at least two of the preceding compounds. Representative bis-benzotriazole compounds include 3,3′-bis-(2H-benzotriazol-2-yl)-5,5′-di-tert-octyl-1,1′-biphenyl-2,2′-diols. Representative mono-benzotriazole compounds include 3-(2H-benzotriazol-2-yl)-5,5′-di-tert-octyl-1,1′-biphenyl-2,2′-diols. These mono- and bis-benzotriazole compounds are useful as stabilizers of degradable polymers against the degradative action of ultraviolet light. Also provided is a method of making these benzotriazole compounds by oxidative dimerization of the corresponding monomeric benzotriazole or by reductive cyclization of the corresponding azo- compound.
    Type: Grant
    Filed: November 11, 1999
    Date of Patent: February 5, 2002
    Assignee: Cytec Industries Inc.
    Inventors: Donald H. Valentine, Jr., John F. Stephen, Thomas P. Sassi
  • Patent number: 5874654
    Abstract: 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: Grant
    Filed: September 19, 1997
    Date of Patent: February 23, 1999
    Assignee: Rhone Poulenc Chimie
    Inventors: Antoinette Gacon-Camoz, Pascal Metivier
  • Patent number: 5243092
    Abstract: There is disclosed a method for producing,2,2-dibromo-2-nitroethanol. The method comprises first reacting tris(hydroxymethyl)nitromethane in aqueous solution with an alkali and then reacting the product of said first reaction with bromine.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: September 7, 1993
    Assignee: K.multidot.I Chemical Industry Co., Ltd.
    Inventors: Koichi Iwabuchi, Hisatake Ogura, Tetsuo Horii
  • Patent number: 5232836
    Abstract: Vitamin D derivatives corresponding to the following formula I ##STR1## in which R.sub.1 denotes a substituted alkyl group having 1 to 15 carbon atoms, in particular the side chains of vitamin D.sub.2 (C.sup.20 to C.sup.28) or D.sub.3 (C.sup.20 to C.sup.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: August 3, 1993
    Assignee: Ire-Medgenix S.A.
    Inventors: Roger Bouillon, Pierre J. De Clerco, Pierre Eliard, Maurits Vanderwalle
  • Patent number: 5210309
    Abstract: The bis-homotris compounds 4-amino-4-[1-(3-hydroxy-propyl)]-1,7-heptanediol and 4-[1-(3-aminopropyl)]-4-[1-(3-hydroxypropyl)]-1, 7-heptanediol, and organic synthetic methods for their preparation are described. Unique multifunctional aminotriols, as well as their percursors, quaternary nitroalkanes are disclosed as building blocks for unimolecular micelles, as well as new series of cascade polymers. The quaternary nitro compounds which are disclosed allow the synthesis of a new aminotriol containing a quaternary carbon.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: May 11, 1993
    Assignee: University of South Florida
    Inventors: George R. Newkome, Charles N. Moorefield
  • Patent number: 5144087
    Abstract: A process for preparing dibromonitro-alcohols, and mixtures thereof with bromonitro-alcohols, is disclosed in which dibromonitromethane, and optionally bromonitroethane, is reacted with a C.sub.1 -C.sub.3 aldehyde in aqueous solution at an acid pH, preferably between about 4.0 and about 7.0. An aqueous solution of the aldehyde is prepared and the pH adjusted to the desired acid range by addition of sodium bicarbonate, and the dibromonitromethane, which may include bromonitromethane, is added thereto. The dibromonitro-alcohol product is isolated as a separate phase from the reaction mixture.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: September 1, 1992
    Assignee: Great Lakes Chemical Corp.
    Inventors: James E. Williams, Scott Thornburgh
  • Patent number: 5136096
    Abstract: The bis-homotris compounds 4-amino-4-[1-(3-hydroxypropyl)]-1,7-heptanediol and 4-[1-(3-aminopropyl)]-4-[1-(3-hydroxypropyl)]-1, 7-heptanediol, and organic synthetic methods for their preparation are described. Unique multifunctional aminotriols, as well as their percursors, quaternary nitroalkanes are disclosed as building blocks for unimolecular micelles, as well as new series of cascade polymers. The quaternary nitro compounds which are disclosed allow the synthesis of a new aminotriol containing a quaternary carbon.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: August 4, 1992
    Assignee: University of South Florida
    Inventors: George R. Newkome, Charles N. Moorefield
  • Patent number: 5075510
    Abstract: A process for preparing bromonitro-alcohols is disclosed in which bromonitromethane is reacted with a C.sub.1 -C.sub.3 aldehyde in aqueous solution at an acid pH, preferably between about 4.0 and about 7.0. An aqueous solution of the aldehyde is prepared and the pH adjusted to the desired acid range by addition of sodium bicarbonate, and the bromonitromethane is added thereto. The bromonitro-alcohol product is isolated as a separate phase from the reaction mixture.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: December 24, 1991
    Assignee: Great Lakes Chemical Corporation
    Inventors: James E. Williams, Scott Thornburgh
  • Patent number: 5001279
    Abstract: The displacement of halogen from a 1,2,3-trihalo-4,6-dinitroresorcinol can be carried out in an aqueous medium using alkali metal hydroxide to form 2-halo-4,6,-dinitroresorcinol. The product is a useful intermediate in the synthesis of 4,6-diaminoresorcinol, which is a monomer for polybenzoxazole polymers. The process from part of a useful aqueous process for synthesizing 4,6-diaminoresorcinol.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: March 19, 1991
    Assignee: The Dow Chemical Company
    Inventor: Tyze-Kuan T. Yin
  • Patent number: 4978793
    Abstract: A process of forming 2-amino-1,3-propanediol by reducing the compound, 5-nitro-1,3-dioxane and subsequently hydrolyzing the reduced compound.
    Type: Grant
    Filed: June 23, 1988
    Date of Patent: December 18, 1990
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Jennifer M. Quirk, Stephen G. Harsy, Christer L. Hakansson
  • Patent number: 4962198
    Abstract: 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: Grant
    Filed: July 7, 1989
    Date of Patent: October 9, 1990
    Assignee: Bayer Aktiengesellschaft
    Inventors: Mieczyslaw Makosza, Krzysztof Sienkiewicz
  • Patent number: 4927946
    Abstract: Unpurified 2-bromo-2-nitro-1,3-propanediol is used as the starting material for a process for the preparation of 5-bromo-5-nitro-1,3-dioxane from 2-nitro-1,3-propanediol without the use of an organic solvent on an industrial scale. This is carried out in such a way that in a first stage a mixture of bromine and aqueous hydrogen bromide solution is cooled and an aqueous solution of an alkali metal or an alkaline-earth metal salt of 2-nitro-1,3-propanediol is added at such a rate that, with cooling, the maximum reaction temperature does not exceed 30.degree. C., and then in a second reaction stage paraformaldehyde and sulfuric acid are added, left to react above room temperature, and the organic phase separated.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: May 22, 1990
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Willi Wuest, Rainer Eskuchen, Herbert Esser, Hasso Leischner
  • Patent number: 4922030
    Abstract: A method of preparing bromonitroalcohols of the formula ##STR1## where R.sub.1 is H, lower alkyl or R.sub.2, R.sub.2 is R.sub.3 CHOH in which R.sub.3 is H, alkyl or aryl, and X is a halogen, which comprises reacting a halonitroalkane with a substantially nonaqueous solutioln of an aldehyde of the formula R.sub.3 CHO where R.sub.3 is as noted above, in the presence of an alkaline catalyst. R.sub.3 preferably is lower alkyl or monocyclic aryl such as phenyl.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: May 1, 1990
    Assignee: Angus Chemical Company
    Inventors: Vincent Nocito, Louis J. Bedell, Matthew I. Levinson
  • Patent number: 4814518
    Abstract: The invention relates to a process for extracting nitrohydroxyaromatics from aqueous solutions. In this process, the extracting agent used is an amine salt which comprises an aliphatic amine having a total carbon number of 10 to 75 and a strong acid. The amine salt can be employed undiluted or diluted with an organic solvent.
    Type: Grant
    Filed: August 12, 1987
    Date of Patent: March 21, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Helmut Gossel, Herbert Kuckertz, Siegbert Rittner, Josef Rosenfelder, Bernhard Wojtech
  • Patent number: 4774366
    Abstract: Geminal dinitro compounds are prepared by reacting an organic nitro compound having a replaceable hydrogen on the carbon to which the nitro group is attached with a source of nitrite ions in the presence of an oxidizing agent and a catalytic amount of an alkali metal ferricyanide.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: September 27, 1988
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Vytautas Grakauskas, Lee C. Garver, Kurt Baum
  • Patent number: 4754079
    Abstract: A safe production of sodium nitro-1,3-propanediol from a reaction solution of nitromethane and paraformaldehyde in methanol by addition of sodium methylate is achieved by evaporative cooling of the methanol; it being possible to maintain reaction temperatures of 35.degree. C. to 50.degree. C.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: June 28, 1988
    Assignee: Dynamit Nobel AG
    Inventors: Gunter Bison, Hans Leuck, Klaus Thewalt, Hans-Jorg Westerman
  • Patent number: 4751332
    Abstract: Resorcinol and substituted resorcinols are converted in one single step reaction into 1,2,3- and 1,2,4-trihydroxybenzenes and substituted hydroxy resorcinol compounds with a benzene solution of peroxypropionic acid.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: June 14, 1988
    Assignee: Degussa Aktiengesellschaft
    Inventors: Guenter Prescher, Gebhard Ritter, Holger Sauerstein
  • Patent number: 4745232
    Abstract: 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: Grant
    Filed: January 7, 1987
    Date of Patent: May 17, 1988
    Assignee: SRI International
    Inventors: Robert J. Schmitt, David S. Ross, James F. Wolfe
  • Patent number: 4723044
    Abstract: A process for producing a dibromonitro compound represented by the general formula ##STR1## wherein R represents a hydrogen atom or a methyl group, which comprises condensing nitromethane with formaldehyde or acetaldehyde in the presence of an alkali, the amount of the aldehyde being at least 1.5 moles per mole of nitromethane; and thereafter without isolating the product, treating the reaction mixture with bromine to brominate the product.
    Type: Grant
    Filed: June 13, 1986
    Date of Patent: February 2, 1988
    Assignee: Permachem Asia, Ltd.
    Inventors: Michio Watanabe, Kiyoshi Ishii, Mie Namiki, Takeshi Fukuda
  • Patent number: 4594430
    Abstract: Geminal dinitro compounds are prepared by reacting an organic nitro compound having a replaceable hydrogen on the carbon to which the nitro group is attached with a source of nitrite ions in the presence of an oxidizing agent and a catalytic amount of an alkali metal ferricyanide.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: June 10, 1986
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Vytautas Grakauskas, Lee C. Garver, Kurt Baum
  • Patent number: 4581178
    Abstract: 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: Grant
    Filed: February 28, 1985
    Date of Patent: April 8, 1986
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: David Milstein
  • Patent number: 4546200
    Abstract: 2,2-Dinitrobutane-1,4-diol and 4-monoesters thereof.
    Type: Grant
    Filed: May 6, 1983
    Date of Patent: October 8, 1985
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Michael E. Sitzmann, Horst G. Adolph
  • Patent number: 4434304
    Abstract: 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: Grant
    Filed: October 15, 1982
    Date of Patent: February 28, 1984
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Albert A. DeFusco, Jr., Arnold T. Nielsen, Ronald L. Atkins
  • Patent number: 4416808
    Abstract: Bis-betaine-amine oxides of the formula ##STR1## in which R is a saturated or an olefinically unsaturated hydrocarbon radical having 1 to 3 double bonds and 8 to 22 carbon atoms,n.sup.1 and n.sup.2 each is an integer of from 2 to 3, n.sup.1 and n.sup.2 optionally being identical or different,m.sup.1 and m.sup.2 each is an integer of from 1 to 4, m.sup.1 and m.sup.2 optionally being identical or different, anda, b, c and d, being identical or different, each is a number of from 1 to 5, with the proviso that the sum (a+b+c+d) is at most 10.The compounds are prepared from primary amines of the formula RNH.sub.2, by dicyanoalkylation, hydrogenation, ethoxylation, reaction with alkali metal salts of .omega.-halocarboxylic acids, and subsequent oxidation with hydrogen peroxide. They are surfactants of mild action and suitable for formulating cosmetic and industrial cleaning agents.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: November 22, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gunter Blaschke, Alwin Reng, Jochen M. Quack
  • Patent number: 4416734
    Abstract: A process for the separation of a dissolved solid from an aqueous solution containing it, comprising the steps of (a) adding thereto an organic liquid which is a poor solvent for the dissolved solid and which forms an azeotrope with water, (b) subjecting the mixture to azeotropic distillation to separate at least a major portion of the water, (c) cooling the mixture thereby causing substantially complete separation of the dissolved solids, and (d) separating same from the mother liquor.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: November 22, 1983
    Assignee: Angus Chemical Company
    Inventor: Martin J. Jacobs
  • Patent number: RE34589
    Abstract: The displacement of halogen from a 1,2,3-trihalo-4,6-dinitroresorcinol can be carried out in an aqueous medium using alkali metal hydroxide to form 2-halo-4,6-dinitroresorcinol. The product is a useful intermediate in the synthesis of 4,6-diaminoresorcinol, which is a monomer for polybenzoxazole polymers. The process from part of a useful aqueous process for synthesizing 4,6-diaminoresorcinol.
    Type: Grant
    Filed: October 26, 1992
    Date of Patent: April 19, 1994
    Assignee: The Dow Chemical Company
    Inventor: Tyze-Kuan T. Yin
  • Patent number: RE34745
    Abstract: 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: Grant
    Filed: November 9, 1992
    Date of Patent: September 27, 1994
    Assignee: The Dow Chemical Company
    Inventor: Zenon Lysenko