Polyhydroxy Nitro Containing Patents (Class 568/712)
-
Patent number: 9506729Abstract: 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: GrantFiled: September 28, 2015Date of Patent: November 29, 2016Assignee: THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF THE ARMYInventor: Divyakant L. Patel
-
Patent number: 8993638Abstract: 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: GrantFiled: June 9, 2010Date of Patent: March 31, 2015Assignee: Dow Global Technologies LLCInventor: Bei Yin
-
Patent number: 8859819Abstract: 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: GrantFiled: April 8, 2010Date of Patent: October 14, 2014Assignee: Pierre Fabre Dermo-CosmetiqueInventor: Stéphane Poigny
-
Patent number: 8729314Abstract: 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: GrantFiled: August 28, 2013Date of Patent: May 20, 2014Assignee: Bromine Compounds Ltd.Inventor: Jacob Oren
-
Patent number: 8692031Abstract: 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: GrantFiled: October 8, 2010Date of Patent: April 8, 2014Assignees: Dow Global Technologies LLC, ANGUS Chemical CompanyInventors: Ian Anthony Tomlinson, Glenn Nelson Robinson, Asghar Akber Peera
-
Publication number: 20140087978Abstract: 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: ApplicationFiled: September 27, 2012Publication date: March 27, 2014Applicant: HALLIBURTON ENERGY SERVICES, INCInventor: Jay P. DEVILLE
-
Publication number: 20140066662Abstract: 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: ApplicationFiled: August 28, 2013Publication date: March 6, 2014Inventor: Jacob OREN
-
Patent number: 8609880Abstract: A process for the preparation of an energetic nitrate ester compound and related intermediates is provided.Type: GrantFiled: September 4, 2012Date of Patent: December 17, 2013Inventors: David E. Chavez, Darren L. Naud, Michael A. Hiskey
-
Patent number: 8546619Abstract: 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: GrantFiled: February 26, 2009Date of Patent: October 1, 2013Assignee: Bromine Compounds Ltd.Inventor: Jacob Oren
-
Patent number: 8324421Abstract: Preparation of an energetic nitrate ester compound and related intermediates is provided.Type: GrantFiled: September 24, 2009Date of Patent: December 4, 2012Assignee: U.S. Department of EnergyInventors: David E. Chavez, Darren L. Naud, Michael A. Hiskey
-
Publication number: 20120202934Abstract: 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: ApplicationFiled: October 8, 2010Publication date: August 9, 2012Inventors: Ian Anthony Tomlinson, Glenn Nelson Robinson, Asghar Akber Peera
-
Publication number: 20120108838Abstract: Preparation of an energetic nitrate ester compound and related intermediates is provided.Type: ApplicationFiled: September 24, 2009Publication date: May 3, 2012Applicant: US Department of EnergyInventors: David E. Chavez, Darren L. Naud, Michael A. Hiskey
-
Publication number: 20110159304Abstract: 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: ApplicationFiled: June 2, 2010Publication date: June 30, 2011Applicant: KOREA GAS CORPORATIONInventors: Hong Seok Song, Young Geun Kim, Keun Chang Ryu, Young Min Baek, Young Hyo Chang
-
Publication number: 20110065964Abstract: 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: ApplicationFiled: February 26, 2009Publication date: March 17, 2011Inventor: Jacob Oren
-
Publication number: 20100239678Abstract: 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: ApplicationFiled: June 7, 2010Publication date: September 23, 2010Inventor: Ali RAZAVI
-
Patent number: 7655819Abstract: 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: GrantFiled: July 29, 2005Date of Patent: February 2, 2010Assignee: TPAT IP LLCInventor: Thomas Daly
-
Patent number: 7414160Abstract: 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: GrantFiled: December 20, 2005Date of Patent: August 19, 2008Assignee: Daicel Chemical Industries, Ltd.Inventors: Yasutaka Ishii, Tatsuya Nakano
-
Publication number: 20070287105Abstract: 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: ApplicationFiled: May 10, 2007Publication date: December 13, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Toshiki Ito, Takako Yamaguchi
-
Patent number: 7019179Abstract: 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: GrantFiled: March 6, 2003Date of Patent: March 28, 2006Assignee: Daicel Chemical Industries, Ltd.Inventors: Yasutaka Ishii, Tatsuya Nakano
-
Publication number: 20040186326Abstract: 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: ApplicationFiled: January 29, 2004Publication date: September 23, 2004Inventors: Gunter Scherr, Thomas Bogenstatter, Jurgen Huff
-
Patent number: 6610889Abstract: 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: GrantFiled: October 31, 2001Date of Patent: August 26, 2003Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: Barry M. Trost, Hisanaka Ito
-
Patent number: 6599952Abstract: 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: GrantFiled: December 13, 2001Date of Patent: July 29, 2003Assignee: Bayer CorporationInventors: Rick L. Adkins, Harold R. Parsons
-
Patent number: 6548564Abstract: 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: GrantFiled: December 13, 2001Date of Patent: April 15, 2003Assignee: Bayer CorporationInventors: Rick L. Adkins, Harold R. Parsons
-
Patent number: 6344505Abstract: 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: GrantFiled: November 11, 1999Date of Patent: February 5, 2002Assignee: Cytec Industries Inc.Inventors: Donald H. Valentine, Jr., John F. Stephen, Thomas P. Sassi
-
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
-
Patent number: 5243092Abstract: 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: GrantFiled: July 21, 1992Date of Patent: September 7, 1993Assignee: K.multidot.I Chemical Industry Co., Ltd.Inventors: Koichi Iwabuchi, Hisatake Ogura, Tetsuo Horii
-
Patent number: 5232836Abstract: 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: GrantFiled: February 18, 1992Date of Patent: August 3, 1993Assignee: Ire-Medgenix S.A.Inventors: Roger Bouillon, Pierre J. De Clerco, Pierre Eliard, Maurits Vanderwalle
-
Patent number: 5210309Abstract: 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: GrantFiled: March 9, 1992Date of Patent: May 11, 1993Assignee: University of South FloridaInventors: George R. Newkome, Charles N. Moorefield
-
Patent number: 5144087Abstract: 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: GrantFiled: October 16, 1991Date of Patent: September 1, 1992Assignee: Great Lakes Chemical Corp.Inventors: James E. Williams, Scott Thornburgh
-
Patent number: 5136096Abstract: 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: GrantFiled: March 26, 1991Date of Patent: August 4, 1992Assignee: University of South FloridaInventors: George R. Newkome, Charles N. Moorefield
-
Patent number: 5075510Abstract: 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: GrantFiled: December 20, 1990Date of Patent: December 24, 1991Assignee: Great Lakes Chemical CorporationInventors: James E. Williams, Scott Thornburgh
-
Patent number: 5001279Abstract: 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: GrantFiled: November 17, 1989Date of Patent: March 19, 1991Assignee: The Dow Chemical CompanyInventor: Tyze-Kuan T. Yin
-
Patent number: 4978793Abstract: 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: GrantFiled: June 23, 1988Date of Patent: December 18, 1990Assignee: W. R. Grace & Co.-Conn.Inventors: Jennifer M. Quirk, Stephen G. Harsy, Christer L. Hakansson
-
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
-
Patent number: 4927946Abstract: 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: GrantFiled: May 1, 1989Date of Patent: May 22, 1990Assignee: Henkel Kommanditgesellschaft auf AktienInventors: Willi Wuest, Rainer Eskuchen, Herbert Esser, Hasso Leischner
-
Patent number: 4922030Abstract: 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: GrantFiled: December 5, 1988Date of Patent: May 1, 1990Assignee: Angus Chemical CompanyInventors: Vincent Nocito, Louis J. Bedell, Matthew I. Levinson
-
Patent number: 4814518Abstract: 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: GrantFiled: August 12, 1987Date of Patent: March 21, 1989Assignee: Hoechst AktiengesellschaftInventors: Helmut Gossel, Herbert Kuckertz, Siegbert Rittner, Josef Rosenfelder, Bernhard Wojtech
-
Patent number: 4774366Abstract: 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: GrantFiled: February 24, 1986Date of Patent: September 27, 1988Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: Vytautas Grakauskas, Lee C. Garver, Kurt Baum
-
Patent number: 4754079Abstract: 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: GrantFiled: March 23, 1987Date of Patent: June 28, 1988Assignee: Dynamit Nobel AGInventors: Gunter Bison, Hans Leuck, Klaus Thewalt, Hans-Jorg Westerman
-
Patent number: 4751332Abstract: 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: GrantFiled: September 14, 1987Date of Patent: June 14, 1988Assignee: Degussa AktiengesellschaftInventors: Guenter Prescher, Gebhard Ritter, Holger Sauerstein
-
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
-
Patent number: 4723044Abstract: 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: GrantFiled: June 13, 1986Date of Patent: February 2, 1988Assignee: Permachem Asia, Ltd.Inventors: Michio Watanabe, Kiyoshi Ishii, Mie Namiki, Takeshi Fukuda
-
Patent number: 4594430Abstract: 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: GrantFiled: January 31, 1985Date of Patent: June 10, 1986Assignee: United States of America as represented by the Secretary of the Air ForceInventors: Vytautas Grakauskas, Lee C. Garver, Kurt Baum
-
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
-
Patent number: 4546200Abstract: 2,2-Dinitrobutane-1,4-diol and 4-monoesters thereof.Type: GrantFiled: May 6, 1983Date of Patent: October 8, 1985Assignee: The United States of America as represented by the Secretary of the NavyInventors: Michael E. Sitzmann, Horst G. Adolph
-
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
-
Patent number: 4416734Abstract: 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: GrantFiled: May 11, 1981Date of Patent: November 22, 1983Assignee: Angus Chemical CompanyInventor: Martin J. Jacobs
-
Patent number: 4416808Abstract: 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: GrantFiled: November 8, 1982Date of Patent: November 22, 1983Assignee: Hoechst AktiengesellschaftInventors: Gunter Blaschke, Alwin Reng, Jochen M. Quack
-
Patent number: RE34589Abstract: 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: GrantFiled: October 26, 1992Date of Patent: April 19, 1994Assignee: The Dow Chemical CompanyInventor: Tyze-Kuan T. Yin
-
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