Nitrogen Containing Patents (Class 423/302)
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Patent number: 5456894Abstract: The invention provides metal-phosphorus-nitrogen polymer compounds and methods for their preparation at low temperatures using readily available starting materials. One group of compounds, metal-phosphazene polymers, are comprised of repeating units of [PN].sub.3 rings linked to form polymers through P--X--M--X--P bonds. The linking atoms X are either NH.sub.2 or O, and M is a metal cation. Another group of the compounds have the generic formula M.sub.a (P.sub.2 O.sub.5).sub.b (NH.sub.3).sub.c O.sub.d.eH.sub.2 O. If the metal-phosphorus-nitrogen polymers are heated to a sufficiently high temperature to reduce the nitrogen/phosphorus ratio, additional novel solid metal phosphorus compounds of the invention are formed, many of which have a foamed, porous structure. The properties of the compounds of the invention can be varied by choice of metal and reaction conditions to create materials having useful conductive, magnetic, optical, catalytic, or ion-exchange properties.Type: GrantFiled: October 12, 1993Date of Patent: October 10, 1995Assignee: Northeastern UniversityInventors: Geoffrey Davies, Nagwa El-Kady, Ahmed El-Toukhy
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Patent number: 5370853Abstract: This invention relates to inorganic microporous solids having a framework structure of AX.sub.4 -tetrahedrons linked by their corners, wherein A denotes at least one electropositive element selected from the group consisting of Be, B, Al, Ga, C, Si, Ge, P, As and S, and at least 10 of the X atoms are nitrogen. The invention also relates to a process for the preparation of these solids.Type: GrantFiled: January 11, 1993Date of Patent: December 6, 1994Assignee: Bayer AGInventors: Wolfgang Schnick, Jan Lucke
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Patent number: 5296211Abstract: The present invention relates to a process for the production of low-needle silicon nitride of high .alpha.-content, wherein an amorphous nitrogen-containing silane compound is mixed with a crystalline or amorphous compound comprising the elements silicon, phosphorus and nitrogen to form a mixture which is heat-treated at temperatures above 1000.degree. C. to form the low-needle silicon nitride. The present invention also relates to the silicon-, nitrogen- and phosphorus-containing compound which is used as the starting material in the process for the production of the low-needle silicon nitride, and the process for the production of the silicon-, nitrogen- and phosphorus-containing compound.Type: GrantFiled: January 6, 1993Date of Patent: March 22, 1994Assignee: Bayer AGInventors: Hans-Peter Baldus, Wolfgang Schnick
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Patent number: 5286469Abstract: The invention provides metal-phosphorus-nitrogen polymer compounds and methods for their preparation at low temperatures using readily available starting materials. One group of compounds, metal-phosphazene polymers, are comprised of repeating units of [PN].sub.3 rings linked to form polymers through P--X--M--X--P bonds. The linking atoms X are either NH.sub.2 or O, and M is a metal cation. Another group of the compounds have the generic formula M.sub.a (P.sub.2 O.sub.5).sub.b (NH.sub.3).sub.c O.sub.d.eH.sub.2 O. If the metal-phosphorus-nitrogen polymers are heated to a sufficiently high temperature to reduce the nitrogen/phosphorus ratio, additional novel solid metal phosphorus compounds of the invention are formed, many of which have a foamed, porous structure. The properties of the compounds of the invention can be varied by choice of metal and reaction conditions to create materials having useful conductive, magnetic, optical, catalytic, or ion-exchange properties.Type: GrantFiled: December 17, 1991Date of Patent: February 15, 1994Assignee: Northeastern UniversityInventors: Geoffrey Davies, Nagwa El-Kady
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Patent number: 5117019Abstract: A class of new oxide structures containing octahedral molybdenum and tetrahedral phosphorous has been generated using hydrothermal techniques. These materials are produced by the reaction of a molybdenum oxide source with phosphate and any one, or combination of organic cation/alkali-metal cation/organic amine as a templating/mineralizing agent. A reducing agent is necessary to convert the Mo(VI) to a lower valent form and can be either added to the reaction mixture or is provided in the form of one of the reactants.Type: GrantFiled: January 31, 1991Date of Patent: May 26, 1992Assignee: Exxon Research and Engineering CompanyInventors: Robert C. Haushalter, Linda A. Mundi
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Patent number: 4956163Abstract: A method of forming amidophosphates comprising reacting a pyrophosphate ion, such as generated from pyrophosphate salts, and sulfamides, in an aqueous solution or suspension. An example of such a reaction is the reaction of tetrasodium pyrophosphate and sulfamide in water to form sodium amidodiphosphate.Type: GrantFiled: June 30, 1989Date of Patent: September 11, 1990Assignee: Monsanto CompanyInventor: David R. Gard
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Patent number: 4902490Abstract: Essentially pure and colorless N-(dichlorophosphoryl)trichlorophosphazene [P.sub.2 NOCl.sub.5 ] is prepared/purified under relatively moderate conditions, by reacting phosphorous pentachloride with ammonium chloride, treating the resulting medium of reaction, containing P.sub.3 NCl.sub.12, with SO.sub.2, and thin film evaporating the medium of reaction, advantageously in two stages, to eliminate SO.sub.2, POCl.sub.3 and SOCl.sub.2 values therefrom.Type: GrantFiled: March 10, 1988Date of Patent: February 20, 1990Assignee: AtochemInventors: Guy Pagniez, Philippe Potin
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Patent number: 4822581Abstract: High phosphorus polyphosphides, namely MP.sub.x, where M is an alkali metal (Li, Na, K, Rb, and Cs) or metals mimicking the bonding behavior of an alkali metal, and x=7 to 15 or very much greater than 15 (new forms of phosphorus) are useful semiconducutors in their crystalline, polycrystalline and amorphous forms (boules and films). MP.sub.15 appears to have the best properties and KP.sub.15 is the easier to synthesize. P may include other pnictides as well as other trivalent atomic species. Resistance lowering may be accomplished by doping with Ni, Fe, Cr, and other metals having occupied d or f outer electronic levels; or by incorporation of As and other pnictides. Top contacts forming junction devices doped with Ni and employing Ni as a back contact comprise Cu, Al, Mg, Ni, Au, Ag, and Ti. Photovoltaic, photoresistive, and photoluminescent devices are also disclosed. All semiconductor applications appear feasible.Type: GrantFiled: December 4, 1984Date of Patent: April 18, 1989Assignee: Stauffer Chemical CompanyInventors: Christian G. Michel, Rozalie Schachter, Mark A. Kuck, John A. Baumann, Paul M. Raccah
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Patent number: 4588838Abstract: The invention is directed to the electrodeposition of a coating of a phosphorylated amide on a metal such as aluminum and the formation of a chemical bond between the metal and the coating, such amide being in the form of (a) an organic polymer consisting of a poly (phosphinohydrazide), a poly (phosphinoguanide) or a poly (phosphinoureide), including homopolymers and copolymers thereof, and their thio analogs or (b) a 2:1 molar adduct of a nitrogen=containing compound such as hydrazine, guanidine or urea or its thio analog, and an organic phosphite or phosphonate. In the method of electrolytically depositing such coating on the metal substrate, e.g., aluminum, the substrate is employed as the anode in a non-aqueous or aqueous electrolyte containing a phosphorylated amide of the type noted above, e.g.Type: GrantFiled: May 27, 1983Date of Patent: May 13, 1986Assignee: McDonnell Douglas CorporationInventor: Norman R. Byrd
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Patent number: 4582932Abstract: Highly fire resistant composites or laminates particularly applicable as structural components in aircraft, e.g. in the engine nacelle, as part of the acoustic panel-fire wall structure, and capable of withstanding a 2,000.degree. F. flame temperature, comprising incorporating an additive in the form of a polymeric phosphorylated amide, into a resin, e.g., a polyimide or an epoxy resin, such additive being soluble in the resin. The resulting resin containing the additive is then applied to or impregnated into a substrate such as glass fiber cloth or graphite fiber, to form a composite structure which is then cured. The resulting cured composite when subjected to high temperatures of the order of, e.g., a 2,000.degree. F. flame temperature, forms a resin char of reduced thermal conductivity which holds the fibers of the laminate together and maintains the structural stability and integrity of the laminate.Type: GrantFiled: May 27, 1983Date of Patent: April 15, 1986Assignee: McDonnell Douglas CorporationInventors: Norman R. Byrd, Daniel C. Peek
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Patent number: 4524052Abstract: New compositions of matter which are halogenated derivatives of borates are disclosed which are catalytically active in the polymerization of halogenated phosphazene trimers and other oligomers are disclosed.Type: GrantFiled: December 24, 1984Date of Patent: June 18, 1985Assignee: The Firestone Tire & Rubber CompanyInventor: Daniel F. Graves
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Patent number: 4522689Abstract: A process for completely separating tri(phosphonitrile chloride) from tetra(phosphonitrile chloride) and/or phosphonitrile chloride oligomer which includes vacuum distillation of the phosphonitrile chloride mixture together with an inert mixture of hydrocarbons as solvent.Type: GrantFiled: October 9, 1984Date of Patent: June 11, 1985Assignee: Shin Nisso Kako Co., Ltd.Inventors: Hiroshi Tanino, Tetsuhiko Okamoto, Shinichiro Ueyama, Kazuhiko Fujikawa, Takatoshi Tsumiyama
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Patent number: 4490192Abstract: Semiconductor doping compositions comprising a suspension of (a) a dopant material, in the form of finely divided spherical particles of narrow size distribution from about 0.1 D to D, where D is the diameter of the largest particle and is no more than about (1.mu.) comprising a member selected from the group consisting of B.sub.x Si.sub.y, B.sub.x N.sub.y, P.sub.x Si.sub.y, P.sub.x N.sub.y, As.sub.x Si.sub.y and Sb.sub.x Si.sub.y wherein x and y vary from about 0.001 to about 99.999 mole percent, (b) an effective amount of a thermally degradable polymeric organic binder such as polymethyl methacrylate; and (c) an amount of an organic solvent, such a cyclohexanone, sufficient to dissolve said polymeric organic binder, such as polymethylmethacrylate, and to disperse said dopant material are disclosed.Type: GrantFiled: June 8, 1983Date of Patent: December 25, 1984Assignee: Allied CorporationInventors: Arunava Gupta, Gary A. West, Jeffrey P. Donlan
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Patent number: 4386020Abstract: The present invention provides a process for the production of solid ion ductor materials (electrolytes) based on lithium or sodium compounds which stand in thermodynamic equilibrium with their alkali metal and have a high decomposition voltage, wherein two or more binary lithium or sodium compounds with an anion which is formed from one or more elements of the group consisting of nitrogen, phosphorus, arsenic, oxygen, sulphur, selenium, tellurium, hydrogen, fluorine, chlorine, bromine and iodine and which stand in thermodynamic equilibrium with their alkali metal are reacted together in such amounts and for such a period of time that a radiographically phase-pure product is formed.The present invention also provides ion conductor materials based on lithium or sodium compounds, which have the general formula:A.sub.3u+2v+w X.sub.u Y.sub.v Z.sub.Type: GrantFiled: May 1, 1980Date of Patent: May 31, 1983Assignee: Max Planck Gesellschaft zur Forderung der Wissenschaften E.V.Inventors: Peter Hartwig, Werner Weppner, Winfried Wichelhaus
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Patent number: 4289539Abstract: A composition is described which comprises amorphous phosphorus-nitrogen-oxygen material having excellent thermal stability and low reactivity to a wide variety of chemicals. The material is manufactured using a chemical vapor deposition process. The reaction chamber is maintained at a temperature between about 400.degree.-900.degree. C. with a suitable substrate placed therein. Reaction gases containing phosphorus-nitrogen-bearing compounds and a source of oxygen are passed through the chamber to deposit the phosphorus-nitrogen-oxygen film onto the substrate.Type: GrantFiled: May 25, 1979Date of Patent: September 15, 1981Assignee: International Business Machines CorporationInventor: Pei-Ching Li
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Patent number: 4279723Abstract: An ionized gas plasma is established in an electrical field in contact with a non-vapor volume monomer (liquid and/or solid). The plasma causes polymerization of the monomers which are of the phosphazene or carborane type.Type: GrantFiled: May 31, 1979Date of Patent: July 21, 1981Assignee: The Regents of the University of CaliforniaInventors: Yoshihito Osada, Alexis T. Bell, Mitchel M. Shen
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Patent number: 4276343Abstract: The invention provides active polymeric phosphorus nitrides containing hydroxyl and halogen. The halogen atoms and hydroxyl groups are linked to phosphorus, and the nitrides contain about 35 to 54 weight % of phosphorus, about 35 to 47 weight % of nitrogen, about 1 to 20 weight % of oxygen and about 0.1 to 8 weight % of chlorine.Type: GrantFiled: March 10, 1980Date of Patent: June 30, 1981Assignee: Hoechst AktiengesellschaftInventors: Joseph Cremer, Heink Harnisch
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Patent number: 4272382Abstract: A process for separating cyclic phosphazene oligomers from a mixture containing cyclic phosphazene oligomers and linear phosphazenes by bringing the mixture into contact with a mineral adsorbent composed of mainly silicon and/or aluminum and removing the adsorbent. Cyclic phosphazene oligomers of high purity can be readily separated in high yields by the process.Type: GrantFiled: November 27, 1979Date of Patent: June 9, 1981Assignee: Otsuka Chemical Co. Ltd.Inventors: Yuzuru Ogata, Yoshifumi Nakacho
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Patent number: 4248840Abstract: Cis-diammineplatinum(II) orthophosphate complexes are prepared by reaction of diaquo-cis-diammineplatinum(II) salts with alkali metal orthophosphates. The resulting complexes possess pronounced anti-tumor activity in mice and low toxicity; consequently, they have high therapeutic indices.Type: GrantFiled: March 7, 1979Date of Patent: February 3, 1981Assignee: Engelhard Minerals and Chemicals CorporationInventors: James D. Hoeschele, Alan R. Amundsen
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Patent number: 4208375Abstract: A mixing device and method of mixing a liquid, vapor, or gas into a slurry of material in a vat in which the liquid, vapor, or gas is introduced into a stream of the slurry passing from the vat through a venturi at the diverging portion of the venturi, and in which the slurry with the entrained liquid, vapor, or gas is returned to the vat below an umbrella of a high velocity stream of slurry in the vat produced by an agitator so as to dissipate the heat of reaction between the two fluids.Type: GrantFiled: January 3, 1977Date of Patent: June 17, 1980Inventor: Max L. Bard
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Patent number: 4148623Abstract: A nitrogen containing slow release glass fertilizer is prepared by co-melting phosphorus oxynitride with phosphorus pentoxide, an alkaline metal oxide and an oxide of a metal of Group II or Group III of the periodic table.Type: GrantFiled: November 22, 1977Date of Patent: April 10, 1979Assignee: International Standard Electric CorporationInventor: Cyril F. Drake
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Patent number: 4072651Abstract: Tetrametaphosphimic acid [HNPO(OH)].sub.4.XH.sub.2 O and its salts are useful as flame retardants, for synthetic resins and natural materials.Type: GrantFiled: September 20, 1972Date of Patent: February 7, 1978Assignee: The Firestone Tire & Rubber CompanyInventor: David F. Lawson
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Patent number: 4065546Abstract: Process for the preparation of chlorophosphazene mixtures having a high proportion of cyclic trimer and tetramer by preparing a dispersion of finely divided ammonium chloride in an amount sufficient to initiate the formation of chlorophosphazene, then, after heating the dispersion to reflux, co-feeding ammonia and a solution of phosphorus pentachloride in a suitable solvent at a rate such that no free PCl.sub.5 concentration is allowed to exist in the reaction mass, and then recovering the cyclic chlorophosphazene produced.Type: GrantFiled: December 8, 1975Date of Patent: December 27, 1977Assignee: Ethyl CorporationInventor: James T. F. Kao
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Patent number: 4063883Abstract: Manufacture of flame-retardant regenerated cellulose fibres by adding one or more flame-retardant phosphorus comounds to viscose, extruding the viscose-containing mixture thus obtained into a spinning bath, stretching and after treating the resulting filaments or staple fibres. The flame-retardant fibres are made by using as the flame-retardant agent a combination of compounds of the general formula:PN.sub.x O.sub.yin which x stands for a number between 0.09 and 1.7 and y stands for a number between 1.2 and 0, preferably approaching zero as the values of x increase towards 1.Type: GrantFiled: August 14, 1975Date of Patent: December 20, 1977Assignees: Hoechst Aktiengesellschaft, Chemiefaser Lenzing AktiengesellschaftInventors: Johann Hupfl, Manfred Czermak, Helmut Teichmann, Josef Paul
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Patent number: 4053560Abstract: The new product, a Cl.sub.3 P=N-N=PCl.sub.3 + NH.sub.3 reaction product, has been found to be an excellent flame-retardant for material made from cellulose such as cotton, paper and sponge; polyester, wool and blends thereof. Conveniently the material can be treated with an aqueous solution containing a sufficient amount of the product and the material dried to make the material self-extinguishing. Then the treated and dried material is cured at a sufficient temperature to bond the product to the material. Alternatively, and usually preferably, the drying and curing can be accomplished as a single operation.Type: GrantFiled: November 17, 1975Date of Patent: October 11, 1977Assignee: Monsanto Research CorporationInventor: Albert Y. Garner
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Patent number: 4044104Abstract: Phosphorus nitrides of the general formula PN.sub.x, in which x stands for a number of 0.9 up to 1.7 are made. To this end, phosphorus halides are reacted with ammonia in gas phase, the ammonia being used in excess based on the phosphorus halides, and the resulting reaction product is heated to temperatures of up to 950.degree. C until ammonia practically ceases to be evolved from the reaction product.Type: GrantFiled: April 13, 1976Date of Patent: August 23, 1977Assignee: Hoechst AktiengesellschaftInventors: Joseph Cremer, Egon Joerchel, Heinz Harnisch
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Patent number: 3991108Abstract: A process for the fluorination of carboxylate compounds to the corresponding acyl fluoride or carbamoyl fluoride, the latter compounds decompose to isocyanates and hydrogen fluoride, wherein the carboxylic acid, its anhydride or metal salt is intimately mixed with a metal fluorosulfonate and heated at a temperature at which the gaseous carboxylic acid fluoride is formed or decomposed.Type: GrantFiled: October 31, 1973Date of Patent: November 9, 1976Inventor: Robert Kenneth Jordan
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Patent number: 3974268Abstract: Technetium-99m-imido disphosphonate complex useful as a skeletal-imaging agent, particularly useful for diagnostic purposes.Type: GrantFiled: May 30, 1975Date of Patent: August 10, 1976Assignee: Research CorporationInventors: Gopal Subramanian, John Gilmore McAfee
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Patent number: 3955029Abstract: The new product, a Cl.sub.3 P=N--N=PCl.sub.3 + NH.sub.3 reaction product, has been found to be an excellent flameretardant for material made from cellulose such as cotton, paper and sponge; polyester, wool and blends thereof. Conveniently the material can be treated with an aqueous solution containing a sufficient amount of the product and the material dried to make the material self-extinguishing. Then the treated and dried material is cured at a sufficient temperature to bond the product to the material. Alternatively, and usually preferably, the drying and curing can be accomplished as a single operation.Type: GrantFiled: July 22, 1974Date of Patent: May 4, 1976Assignee: Monsanto Research CorporationInventor: Albert Y. Garner
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Patent number: 3948820Abstract: Copolymers and terpolymers comprising randomly repeating units represented by the general formulae ##EQU1## wherein the R' radicals contain OH functionality and R being at least one member of the group of monovalent radicals selected from alkyl, substituted alkyl, aryl, substituted aryl and arylalkyl, and R' is represented by ##EQU2## wherein Q represents either --(CH.sub.2).sub. n or --C.sub.6 H.sub.4 X(CH.sub.2).sub. m, the --X(CH.sub.2).sub. m group being either meta or para and n is an integer from 1 to 6, m is an integer from 1 to 3, X is O or CH.sub.2, and R" is H or a lower alkyl radical with up to four carbon atoms (methyl, ethyl, etc.). The ratio of R to R' is between 99.5 to 0.5 and 65 to 35.Type: GrantFiled: August 7, 1974Date of Patent: April 6, 1976Assignee: Horizons IncorporatedInventors: Kennard A. Reynard, Selwyn H. Rose
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Patent number: 3933977Abstract: This invention involves a process for producing high bulk density sodium carbonate from crude trona wherein sodium carbonate monohydrate purge streams containing high amounts of organic impurities are passed to an anhydrous crystallizer operated at temperatures above about 109.degree.C wherein anhydrous sodium carbonate crystals are formed having high bulk densities of about 60 to about 80 lbs/ft.sup.3.Type: GrantFiled: January 11, 1974Date of Patent: January 20, 1976Assignee: Intermountain Research and Development CorporationInventors: Joseph M. Ilardi, John Walden, Eric Rau
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Patent number: 3931039Abstract: A phosphorus nitride-silicon oxide composition having good thermal stability and diffusion characteristics for use as a diffusant source of n-type impurities for a semi-conductor device.Type: GrantFiled: November 1, 1973Date of Patent: January 6, 1976Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Mitsuo Yamashita, Akio Mikogami, Masashi Hasegawa, Hiroshi Oizumi
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Patent number: T105605Abstract: Tests show that 2,2,4,4,6,6-hexaaminocyclotriphosphazatriene, 2-phenoxy-2,4,4,6,6-pentaaminocyclotriphosphazatriene, 2,4-diphenoxy-2,4,6,6-tetraaminocyclotriphosphazatriene and 2,4,6-triphenoxy-2,4,6-triaminocyclotriphosphazatriene (also frequently called phosphonitrilic derivatives) of the formula ##STR1## are highly effective inhibitors of urease activity in agricultural soil systems wherein(1) R.sub.1 . . . R.sub.3 '=NH.sub.2 or(2) R.sub.1 '=R.sub.2 '=R.sub.3 '=R.sub.2 =R.sub.3 =NH.sub.2 and R.sub.1 =OC.sub.6 H.sub.5 or(3) R.sub.1 '=R.sub.2 '=R.sub.3 '=R.sub.3 =NH.sub.2 and R.sub.1 =R.sub.2 =OC.sub.6 H.sub.5 or(4) R.sub.1 '=R.sub.2 '=R.sub.3 '=NH.sub.2 and R.sub.1 =R.sub.2 =R.sub.3 =OC.sub.6 H.sub.5The above-mentioned compounds and mixtures of the compounds show sustained inhibition of the soil urease activity for periods of at least 21 days.Type: GrantFiled: June 28, 1984Date of Patent: July 2, 1985Inventors: Ramiro Medina, Jack M. Sullivan