Of Nitro Or Nitroso Patents (Class 564/494)
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Patent number: 8865941Abstract: Provided is a process for preparing alkyl diamine compounds in high purity. The process utilizes an alkyl amine compound during the reduction of a nitroamine, resulting in reduction of the concentration of undesired byproducts.Type: GrantFiled: May 17, 2012Date of Patent: October 21, 2014Inventors: Michael D. Major, David W. Moore
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Patent number: 8754262Abstract: Process for preparing 2,2-difluoroethylamine, characterized in that 1,1-difluoro-2-nitroethane is subjected to a catalytic hydrogenation.Type: GrantFiled: October 6, 2010Date of Patent: June 17, 2014Assignee: Bayer CropScience AGInventors: Stefan Antons, Norbert Lui, Arne Gerlach
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Publication number: 20140145108Abstract: A process for making a tertiary aminoalcohol compound is disclosed. The process comprises using an excess amount of a carbonyl compound in a condensation step between the carbonyl compound and a nitroalkane in the presence of a catalytic amount of a tertiary aminoalcohol compound, and conducting a hydrogenation/alkylation step to produce the tertiary aminoalcohol. The tertiary aminoalcohol compound used to catalyze the condensation step is preferably the same tertiary aminoalcohol compound produced in the hydrogenation/alkylation step. The process uses fewer steps than conventional processes.Type: ApplicationFiled: July 16, 2012Publication date: May 29, 2014Applicant: ANGUS CHEMIE GMBHInventors: David W. Moore, Christian Spieker, John D. Gummere
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Publication number: 20130131386Abstract: Provided is a composition that is useful for textile processing, including for softening and providing smoothness to textiles The composition comprises an alkoxylate of the formula (I): wherein AO, EO, m, n, R.Type: ApplicationFiled: June 30, 2010Publication date: May 23, 2013Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Xiao Hua Wang, Wanglin Yu, Shawn J. Maynard
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Publication number: 20120196963Abstract: A compound having formula (I) wherein R1, R2, R3, R4, R5 and R6 independently are hydrogen, C1-C10 alkyl, C5-C10 cycloalkyl, C6-C10 aryl or C7-C20 aralkyl; X is a difunctional group selected from the group consisting of C2-C20 alkyl, C5-C20 cycloalkyl, C6-C10 aryl, C8-C20 aryl alkyl, C4-C20 heteroalkyl or C10-C20 aryl heteroalkyl.Type: ApplicationFiled: October 8, 2010Publication date: August 2, 2012Applicant: Angus Chemical CompanyInventor: Raymond John Swedo
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Publication number: 20110224460Abstract: Provided is a process for making an aminoalcohol compound. The process comprises using an excess amount of aliphatic aldehyde in a condensation step between the aldehyde and a nitroalkane, and using an aldehyde scavenger in a reductive hydrogenation step. The process yields aminoalcohol compounds exhibiting reduced color and odor.Type: ApplicationFiled: March 10, 2011Publication date: September 15, 2011Inventor: David W. Moore
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Publication number: 20110082318Abstract: Process for preparing 2,2-difluoroethylamine, characterized in that 1,1-difluoro-2-nitroethane is subjected to a catalytic hydrogenation.Type: ApplicationFiled: October 6, 2010Publication date: April 7, 2011Applicant: Bayer CropScience AGInventors: Stefan ANTONS, Norbert Lui, Arne Gerlach
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Publication number: 20100126945Abstract: A process for affecting reductive conversion reactions in a reactor using the palladized bacterial cellulose immobilized on a support for reductive conversion reactions in a reactor.Type: ApplicationFiled: April 2, 2008Publication date: May 27, 2010Applicants: INDIAN INSTITUTE OF TECHNOLOGY BOMBAY (IITB), DEPARTMENT OF BIOTECHNOLOGYInventors: Upendra Patel, Sumathi Suresh
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Publication number: 20090264679Abstract: A process for the adjustment of a catalyst's or a catalyst precursor's suspension and settling properties, whereby the catalyst is treated with flocculants.Type: ApplicationFiled: December 14, 2004Publication date: October 22, 2009Inventors: Daniel Ostgard, Monika Berweiler, Barbara Bender
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Patent number: 7453012Abstract: A process for the hydrogenation of compounds comprising nitrile or nitro functional groups to amine, aminonitrile or aminonitro compounds is provided. The process can be a continuous process conducted in the presence of a heterogeneous hydrogenation catalyst in divided form and a basic compound. The reaction can be conducted in a stirred reactor comprising an external loop for circulating the reaction mixture, allowing one portion of the hydrogenated products to be separated without withdrawing the catalyst, by using tangential filtration. The process may be especially useful in the hydrogenation of adiponitrile to an aminocapronitrile/hexamethylenediamine mixture.Type: GrantFiled: January 20, 2003Date of Patent: November 18, 2008Assignee: Rhodia Polyamide IntermediatesInventors: Gérald Bocquenet, André Chesnais, Jean-Michel Desire, Philippe Leconte, Lionel Sever
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Patent number: 6888030Abstract: Inclusion of a branched alcohol in the catalytic hydrogenation reaction involving an aliphatic nitro compound dramatically increases the efficiency of the conversion of nitro groups into amino groups. This discovery is of particular value in the production of polyalkyleneamines via nitration of a polyalkene, such as a polybutene, and its subsequent reduction. The polyalkyleneamines so produced are useful as dispersant additives for motor oils and fuels.Type: GrantFiled: October 22, 2002Date of Patent: May 3, 2005Assignee: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Wheeler C. Crawford, John M. Larkin
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Publication number: 20030207761Abstract: This invention relates to improved catalytic compositions suited for use in hydrogenation processes and to an improved process for hydrogenating organic compounds as in amination of alcohols or hydrogenation of nitro groups to the amine using the catalyst. The catalytic composition is more particularly an improvement in nickel catalysts promoted with palladium carried on a support. The improvement resides in including a promoting effect of a metal M and/or its oxide, selected from Zn, Cd, Cu, and Ag, typically from about 0.01 to 10% by weight of the support.Type: ApplicationFiled: May 1, 2002Publication date: November 6, 2003Inventor: Hao Ding
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Publication number: 20030158435Abstract: A method for preparing organic products from aqueous solutions, such as waste or byproduct liquid streams and waste or byproduct gas or vapor streams, uses phase transfer catalysis to transfer a chemical species in low concentration from the aqueous solution to the organic phase or the aqueous-organic interface. The system has little or no organic solvent, and the organic phase contains an electrophile which participates in the reaction. In one embodiment, the aqueous solution is contacted with the electrophile and a phase transfer catalyst and, optionally, a pH adjusting agent in the event that the chemical species in the aqueous solution is not sufficiently ionized to react with the electrophile, and optionally an organic solvent. A method for continuously converting a chemical species involves this contacting step, separating the phases, then dividing the organic phase into the product, the phase transfer catalyst, and the optional organic solvent.Type: ApplicationFiled: September 6, 2002Publication date: August 21, 2003Inventors: Peter J. Joyce, Roman Bielski, Marc Halpern
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Publication number: 20030078344Abstract: Inclusion of a branched alcohol in the catalytic hydrogenation reaction involving an aliphatic nitro compound dramatically increases the efficiency of the conversion of nitro groups into amino groups. This discovery is of particular value in the production of polyalkyleneamines via nitration of a polyalkene, such as a polybutene, and its subsequent reduction. The polyalkyleneamines so produced are useful as dispersant additives for motor oils and fuels.Type: ApplicationFiled: October 22, 2002Publication date: April 24, 2003Applicant: Huntsman Petrochemical CorporationInventors: Wei-Yang Su, Wheeler C. Crawford, John M. Larkin
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Patent number: 6509504Abstract: Disclosed is a method for preparing serinol (2-amino-1,3-proanediol). From nitromethane, para-formaldehyde and sodium hydroxide, 1-nitro-1,3-propanediol sodium salt is prepared as a medical intermediate. In a fixed bed, this intermediate is allowed to undergo the continuous hydrogenation of 2-nitro-1,3-propanediol sodium salt and methanol as shown in reaction (1). In addition to being simple, the method is economically favorable and affords the high yield and high purity of serinol.Type: GrantFiled: December 12, 2001Date of Patent: January 21, 2003Assignee: SK CorporationInventors: Byong-Sung Kwak, Ki-Nam Chung, Choon-Gil Kim, Ki-Ho Koh
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Patent number: 6140539Abstract: In a process for preparing amines, in which at least one compound containing at least one nitro group is reacted with hydrogen in the presence of a supported catalyst comprising, as catalytically active metal, nickel, if desired together with at least one metal of transition group I, V, VI and/or VIII, the reduced and stabilized supported catalyst comprises nickel crystallites having a bimodal nickel crystallite size distribution having maxima at 30-80 Angstrom and 81-150 Angstrom on a support comprising ZrO.sub.2, ZrO.sub.2 --HfO.sub.2 and/or SiO.sub.2 --ZrO.sub.2 and/or SiO.sub.2 --ZrO.sub.2 --HfO.sub.2 and in the reduced and passivated state has a nickel content of 60-80 percent by mass, an SiO.sub.2 content of 0-20 percent by mass, a ZrO.sub.2 content of 0-40 percent by mass, an HfO.sub.2 content of 0-4 percent by mass and after further reduction for one hour at 100.degree. C. has a degree of reduction of at least 70%.Type: GrantFiled: March 3, 2000Date of Patent: October 31, 2000Assignee: BASF AktiengesellschaftInventors: Michael Sander, Dietmar Peisker, Klaus Werner, Holger Braunsberg, Gunter Georgi, Ulrich Penzel
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Patent number: 6069281Abstract: The invention relates to the preparation of organic nitrogen compounds, in particular of aminoalkanes, alkyloximes, alkylnitrones or mixtures thereof, which have only one nitrogen-functional group and no alcoholic hydroxyl groups in the molecule, from nitro-containing reaction products of polymers of C.sub.2 -C.sub.6 -olefins with an average degree of polymerization P=5-100 with nitrogen oxides or mixtures of nitrogen oxides and oxygen by hydrogenation of these reaction products. The invention also relates to particular mixtures of such aminoalkanes, alkyloximes and/or alkylnitrones and to individual compounds of these types themselves. The designated products are suitable as additives to fuels and lubricants.Type: GrantFiled: January 13, 1998Date of Patent: May 30, 2000Assignee: BASF AktiengesellschaftInventors: Rudolf Kropp, Wolfgang Siegel, Boris Breitscheidel, Wolfgang Harder, Harald Schwahn, Wolfgang Reif
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Patent number: 5811584Abstract: Process for the production of TMEDA in high yield by reducing 2,3-dimethyl-2,3-dinitrobutane with hydrogen in the presence of a chromium promoted Raney cobalt catalyst. A solution of 2,3-dimethyl-2,3-dinitrobutane in a suitable solvent is fed to a reactor while avoiding the accumulation of 2,3-dimethyl-2,3-dinitrobutane in the reaction medium, such as by feeding it at a rate no greater than its rate of reaction with hydrogen. In a preferred embodiment, the resulting TMEDA is recovered by converting it to an amine salt by sparging carbon dioxide through the solution.Type: GrantFiled: July 29, 1997Date of Patent: September 22, 1998Assignee: Hampshire Chemical Corp.Inventors: Gerald J. O'Neill, Albert H. Levesque, Robert J. Bulka
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Patent number: 5726334Abstract: This invention relates to a process for the preparation of ruthenium complexes of the formula RuH.sub.2 L.sub.2 (PR.sub.3).sub.2, wherein each L is independently H.sub.2 or an additional equivalent of PR.sub.3, and each R is independently H, a hydrocarbyl group, or an assembly of at least two hydrocarbyl groups connected by ether or amine linkages, comprising contacting a source of ruthenium and PR.sub.3 with gaseous hydrogen in the presence of a strong base, a phase-transfer catalyst, water and an organic solvent; and the use of certain classes of ruthenium complexes as catalysts in hydrogenation, and reductive hydrolysis processes.Type: GrantFiled: September 19, 1996Date of Patent: March 10, 1998Assignee: E. I. du Pont de Nemours and CompanyInventors: Richard Paul Beatty, Rocco Angelo Paciello
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Patent number: 5689003Abstract: The invention relates to a novel ruthenium complex having the formula Ru(.eta..sup.3 --C.sub.6 H.sub.8 --PCy.sub.2)(PCy.sub.3)Cl, wherein Cy is cyclohexyl; its use in the preparation of RuHCl(H.sub.2)(PCy.sub.3).sub.2 and RuH.sub.2 (H.sub.2).sub.2 (PCy.sub.3).sub.2 ; and the use of the complexes as catalysts in hydrogenation, imination and reductive hydrolysis processes.Type: GrantFiled: May 8, 1996Date of Patent: November 18, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventors: Richard Paul Beatty, Rocco Angelo Paciello
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Patent number: 5639895Abstract: Disclosed is a process for producing .beta.-nitroenamine represented by the formula I: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and independently indicate a hydrogen atom or a C.sub.1 -C.sub.10 alkyl group which may be optionally substituted with at least one group selected from the group consisting of a halogen atom, a lower alkoxy group, an aryloxy group, a hydroxyl group or an aryl group, or an aryl group which may be optionally substituted with a halogen atom, a lower alkyl group, a lower alkoxy group, an aryl group, an aryloxy group, a nitro group, a cyano group, an acylamino group, a di-lower alkylamino group, an arylamino group, a hydroxyl group, an arylsulfonyl group, a mercapto group, a lower alkylthio group or an arylthio group, R.sub.1 and R.sub.2 may bond together to form a cycloalkyl or bicycloalkyl and R.sub.3 is a hydrogen atom, a lower alkyl group, a cycloalkyl group or an aralkyl group; and an intermediate for producing the .beta.-nitroenamine.Type: GrantFiled: September 13, 1996Date of Patent: June 17, 1997Assignee: Sumitomo Chemical Company, LimitedInventor: Shinzo Seko
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Patent number: 5296632Abstract: Nitro polyamines, and especially dinitro polyamines, can be readily reduced by a catalyst of zerovalent nickel on silica where the silica contains not more than 10% alumina and where the nickel content of the finished catalyst may be as high as 85%. The reductions can be performed under relatively low temperatures between 40.degree. and 120.degree. C. to avoid the problem of heat lability of the reactant nitro polyamines. Hydrogenations proceed with good conversion as well as good selectivity and the method offers a means of continuous hydrogenation of nitro polyamines.Type: GrantFiled: July 2, 1992Date of Patent: March 22, 1994Assignee: UOPInventors: Dusan J. Engel, Thomas P. Malloy, Steven R. Paeschke
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Patent number: 5196601Abstract: Disclosed herein is a process for producing an alcohol or an amine by reducing a compound having a formyl, keto, nitro, oxirane, ester, nitrile, amide or halogenated carboxyl group with an alkali metal boro-hydride in the presence of a compound having a hydroxyl group and ether linkage. According to the present invention, a functional group having a great steric hindrance can be reduced, and a corresponding alcohol or amine can efficiently be produced under very mild conditions on an industrial scale.Type: GrantFiled: June 17, 1992Date of Patent: March 23, 1993Assignee: Kao CorporationInventors: Tomohito Kitsuki, Yoshiaki Fujikura
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Patent number: 5166435Abstract: The present invention relates to a process for the preparation of organic hydroxylamines as a result of the corresponding nitroderivative being hydrogenated in the presence of an inert solvent, a platinum catalyst, a nitrogen-containing base (in an amount of less than 10% by weight calculated on the amount of nitro derivative) and a tri- or pentavalent organic phosphorus compound. It has been found that if only use is made of the nitrogen-containing base or the phosphorus compound the yields of isolated hydroxyl amine are significantly reduced in comparison with those obtained with the present process.Type: GrantFiled: March 24, 1988Date of Patent: November 24, 1992Assignee: Akzo N.V.Inventors: Ashutosh H. Sharma, Peter Hope
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Patent number: 5099067Abstract: The present invention relates to a method of converting .beta.-nitro compounds, specifically alcohols, into the corresponding hydroxy amines with retention of configuration by the use of ammonium formate.Type: GrantFiled: August 15, 1991Date of Patent: March 24, 1992Assignee: Northwestern UniversityInventors: Anthony G. M. Barrett, Christopher D. Spilling
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Patent number: 5053545Abstract: A method of preparing an amino alcohol 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. R.sub.3 preferably is hydrogen, lower alkyl or monocyclic aryl such as phenyl. The inventive method involves the reaction of halonitroalcohol with hydrogen in the presence of methanol, a suitable buffering agent such as ammonia, and a hydrogenation catalyst to form amino alcohol salt, neutralizing the amino alcohol salt, and recovering the resultant amino alcohol.Type: GrantFiled: August 7, 1990Date of Patent: October 1, 1991Assignee: Angus Chemical CompanyInventors: Thomas H. Marman, Vincent Nocito
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Patent number: 4902831Abstract: Described is a process for preparing 1,2-diaminoethane having the formula ##STR1## where R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are each independently hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.12 cycloalkyl, C.sub.7 -C.sub.15 aralkyl, unsubstituted or substituted aryl or heteroaryl or alternatively, R.sub.1 and R.sub.2 together with the carbon atom form a 3 to 12 member cycloalkyl group, or with a heteroatom form a 3 to 12 member heterocyclic group and R.sub.3 and R.sub.4 together with the nitrogen atom form a 3 to 12 member heterocyclic group, optionally including oxygen, sulfur or phosphorus as a second heteroatom, the process comprising: reacting a preformed Schiff base with a nitroalkane as a neat mixture in the presence of a catalytic amount of an inorganic base to form the 1-nitro-2-aminoethane intermediate, which was then hydrogenated to give 1,2-diaminoethane.Type: GrantFiled: November 9, 1987Date of Patent: February 20, 1990Assignee: E. I. Du Pont de Nemours & Co.Inventors: Khuong H. X. Mai, Ghanshyam Patil
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Patent number: 4895994Abstract: Catalysts made by the Raney process (e.g., Raney process nickel) pelletized in matrix of polymer and plasticizer are activated by either (a) removal of plasticizer (e.g., by solvent extraction) followed by leaching out Al with caustic solution, leaving an active catalyst made by the Raney process in a polymer matrix; or (b) removal of plasticizer, then calcining to remove polymer, followed by leaching with caustic. The activated catalyst pellets have sufficient strength and attrition resistance for efficient use in fixed beds and packed columns for superior hydrogenation of toluene, heptene, butyraldehyde, and other conventional feedstockers used with catalysts made by the Raney process.Type: GrantFiled: October 18, 1988Date of Patent: January 23, 1990Assignee: W. R. Grace & Co.-Conn.Inventors: Wu-Cheng Cheng, Christian B. Lundsager, Robert M. Spotnitz
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Patent number: 4792625Abstract: The invention provides a process for reducing substantially water insoluble organic compounds containing reducible groups comprising contacting these compounds with an aqueous solution of a formic acid salt in the presence of a hydrogenation catalyst and in the substantial absence of a phase transfer catalyst.Type: GrantFiled: July 9, 1987Date of Patent: December 20, 1988Assignee: Yissum Research Development CompanyInventors: Harold Wiener, Shmuel Vandel, Yoel Sasson
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Patent number: 4698446Abstract: A nitroamine is formed from an aliphatic amine reactant + a nitroalkane + an aldehyde with better conversion, and faster, if the aldehyde is added last, and gradually, so as not to form an alkanolamine intermediate with the aldehyde as in the prior art reactions. In particular, a diamine such as ethylene diamine (EDA) has the unique ability, even among diprimary amines, to react with nitroalkane, to form a salt intermediate to which is added an essentially solvent-free aldehyde such as paraformaldehyde to produce a reaction product consisting essentially of a mixture of (i) a mononitrodialkylenediamine with a disubstituted N-adjacent terminal C atom and (ii) a dinitrotrialkylenediamine with each N-adjacent terminal C atom being disubstituted; and the mixture is obtained in an yield of at least 90 mol %.Type: GrantFiled: July 1, 1986Date of Patent: October 6, 1987Assignee: The BF Goodrich CompanyInventors: John T. Lai, Pyong N. Son
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Patent number: 4675445Abstract: A process for eliminating N-nitrosamines, particularly N,N-dialkyl-N-nitrosamines and N-alkyl-N-aryl-N-nitrosamines from N-nitrosamine containing compositions through the addition of organic carboxylic acid halides. The process eliminates N-nitroso compounds without rearrangement to C-nitroso compounds.Type: GrantFiled: November 12, 1985Date of Patent: June 23, 1987Assignee: BASF CorporationInventors: Pauls Davis, Donald C. Mente
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Patent number: 4563371Abstract: The metallization of porous solid bodies, such as, for example, ion exchange materials, by loading the surfaces of the metal-free substrates with transition metal ions and subsequently treating them with reducing agents can be improved by activating the substrates, before or after the loading with metal ions, with elements of group 1 or 8 of the periodic table or compounds thereof and sensitizing any activating ions still present. The metallization products are useful hydrogenation catalysts.Type: GrantFiled: December 23, 1983Date of Patent: January 7, 1986Assignee: Bayer AktiengesellschaftInventors: Kirkor Sirinyan, Peter M. Lange, Rudolf Merten, Alfred Mitschker
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Patent number: 4535154Abstract: A method for the reduction of nitrogen compounds containing an N--N or N.dbd.N bond, which are soluble in water or lower alcohols, particularly nitrosamines, hydrazines, nitramines, azo- and azoxy-compounds, to the corresponding amines; comprising contacting the nitrogen compounds with a hydroxide solution and a nickel-aluminum alloy in the absence of a hydrogen atmosphere, at room temperature and at atmospheric pressure, for a sufficient time to produce the corresponding amine in a single step.Type: GrantFiled: July 13, 1983Date of Patent: August 13, 1985Assignee: United States of AmericaInventors: Larry K. Keefer, George Lunn
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Patent number: 4532351Abstract: Supported catalysts comprised of one or more metals of Group VIII, optionally one or more metals from Group IB and IIA, aluminum and silicate are used for hydrogenating hydrogenatable organic compounds. The catalysts can be produced by coprecipitating metal ions from Group VIII, optionally metal ions from Groups IB and IIA, aluminum ions, and silicate ions, in the presence of solid porous particles.Type: GrantFiled: June 16, 1982Date of Patent: July 30, 1985Assignee: Exxon Research and Engineering Co.Inventors: Allan E. Barnett, Albert P. Halluin
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Patent number: 4376217Abstract: This invention provides a general method for the conversion of alkenes to primary vicinal diamines by use of a cobalt alkylnitroso complex and reduction with lithium aluminum hydride.Type: GrantFiled: October 1, 1981Date of Patent: March 8, 1983Assignee: Regents of the University of CaliforniaInventors: Robert G. Bergman, Paul N. Becker, Mary A. White
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Patent number: 4372893Abstract: Selective reduction of compounds containing reducible nitro-, nitroso-, nitrilo-, oximes or double bonds is effected by the use of a metal macrocyclic compound in prereduced form, such as a metal phthalocyanine or a metal porphyrin.Type: GrantFiled: October 6, 1980Date of Patent: February 8, 1983Inventor: Heiner Eckert
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Patent number: 4313018Abstract: Anthranilic acid has been anchored to polystyrene, and rhodium, palladium, platinum and ruthenium complexes of this modified polystyrene have been prepared. These catalysts will reduce a variety of olefinic and aromatic hydrocarbons, and also nitrile, nitro and carbonyl functional groups, said carbonyl groups being present in either ketones or aldehydes.Type: GrantFiled: April 7, 1978Date of Patent: January 26, 1982Assignee: Western Kentucky UniversityInventors: Norman L. Holy, William A. Logan, Karl D. Stein
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Patent number: 4287365Abstract: A particularly active Raney nickel catalyst is provided with a high-iron content, containing about 10 to 30% by weight of iron relative to the sum of the active metals nickel and iron. The catalyst can be prepared by treating aluminum/nickel/iron alloys which contain (1) 21 to 49.5% by weight of nickel, (2) 3 to 16.5% by weight of iron and (3) aluminum to make up to 100%, with an inorganic or organic base and separating the catalyst from the reaction mixture. According to the invention, said particularly active Raney nickel catalysts are used for the hydrogenation of organic compounds.Type: GrantFiled: June 11, 1979Date of Patent: September 1, 1981Assignee: Bayer AktiengesellschaftInventors: Hans-Joachim Becker, Walter Schmidt
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Patent number: 4263225Abstract: Supported coprecipitated nickel-cobalt-silica and nickel-cobalt-copper-silica hydrogenation catalysts are disclosed. The catalysts are prepared by preparing an aqueous reaction mixture containing nickel and cobalt cations (and optionally copper cations), silicate anions and solid porous carrier particles under agitation to form a coprecipitate of the nickel, cobalt (and optionally copper) and silicate ions onto said solid porous support particles; heating the aqueous reaction mixture; and adding an alkaline precipitating agent to further precipitate the nickel, cobalt (and optionally copper) and silicate anions onto said solid porous carrier particles.Type: GrantFiled: September 19, 1979Date of Patent: April 21, 1981Assignee: Exxon Research & Engineering Co.Inventors: James L. Carter, Allan E. Barnett, John H. Sinfelt
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Patent number: 4233244Abstract: Vinyl cyclohexene is reacted with nitrobenzene to produce ethylbenzene, aniline, and styrene at 170.degree. C.-360.degree. C. in the presence of a hydrogen transfer catalyst typified by palladium acetylacetonate optionally containing cobalt acetylacetonate or copper oxide.Type: GrantFiled: September 18, 1978Date of Patent: November 11, 1980Assignee: Texaco Inc.Inventors: John A. Patterson, Wheeler C. Crawford, James R. Wilson