Patents Assigned to Mississippi Chemical Corporation
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Publication number: 20030172700Abstract: A coated fertilizer is provided along with a method for producing the coated fertilizer, where the coated fertilizer has a coating made of at least one amine compound which is a primary, secondary or tertiary, straight or branched hydrocarbon chain amine or an amine containing a cyclic hydrocarbon radical and; a microcrystalline wax, a paraffin wax or a soft synthetic wax.Type: ApplicationFiled: October 21, 2002Publication date: September 18, 2003Applicant: MISSISSIPPI CHEMICAL CORPORATIONInventors: Donald Ray Thomas, Corinne Grady Ciaccio, Kerry Collins
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Patent number: 6562941Abstract: A method for the production of polyasparagine is provided wherein the polyasparagine is prepared by ammonolysis of polysuccinimide in liquid ammonia, acting both as a solvent and as a reactant, wherein the polysuccinimide can be any polysuccinimide, such as linear, branched or cross-linked, wherein the polyasparagine produced has high % N content and is neutral as opposed to anionic or cationic.Type: GrantFiled: August 14, 2001Date of Patent: May 13, 2003Assignee: Mississippi Chemical CorporationInventor: Zhongxin Ma
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Publication number: 20030070462Abstract: Controlled release fertilizers are provided and methods for their preparation, wherein the controlled release fertilizers are obtained through self-assembling molecules on the surfaces of the fertilizer particles, and then, preferably, linking these molecules into a network with another component. The designed molecules have a hydrophilic portion, which can interact with fertilizers, and a hydrophobic portion that make the molecule self-assemble and setup a moisture barrier. The molecules also preferably have at least two functional groups in order to form a network.Type: ApplicationFiled: November 13, 2002Publication date: April 17, 2003Applicant: MISSISSIPPI CHEMICAL CORPORATIONInventors: Zhongxin Ryan Ma, Donald R. Thomas, Corinne G. Ciaccio
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Patent number: 6540808Abstract: Controlled release fertilizers are provided and methods for their preparation, wherein the controlled release fertilizers are obtained through self-assembling molecules on the surfaces of the fertilizer particles, and then, preferably, linking these molecules into a network with another component. The designed molecules have a hydrophilic portion, which can interact with fertilizers, and a hydrophobic portion that make the molecule self-assemble and setup a moisture barrier. The molecules also preferably have at least two functional groups in order to form a network.Type: GrantFiled: April 9, 2001Date of Patent: April 1, 2003Assignee: Mississippi Chemical CorporationInventors: Zhongxin Ryan Ma, Donald R. Thomas, Corinne G. Ciaccio
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Patent number: 6475259Abstract: A coated fertilizer is provided along with a method for producing the coated fertilizer, where the coated fertilizer has a coating made of at least one amine compound which is a primary, secondary or tertiary, straight or branched hydrocarbon chain amine or an amine containing a cyclic hydrocarbon radical and; a microcrystalline wax, a paraffin wax or a soft synthetic wax.Type: GrantFiled: October 29, 1999Date of Patent: November 5, 2002Assignee: Mississippi Chemical CorporationInventors: Donald Ray Thomas, Corinne Grady Ciaccio, Kerry Collins
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Publication number: 20020144528Abstract: Controlled release fertilizers are provided and methods for their preparation, wherein the controlled release fertilizers are obtained through self-assembling molecules on the surfaces of the fertilizer particles, and then, preferably, linking these molecules into a network with another component. The designed molecules have a hydrophilic portion, which can interact with fertilizers, and a hydrophobic portion that make the molecule self-assemble and setup a moisture barrier. The molecules also preferably have at least two functional groups in order to form a network.Type: ApplicationFiled: April 9, 2001Publication date: October 10, 2002Applicant: Mississippi Chemical CorporationInventors: Zhongxin Ryan MA, Donald R. Thomas, Corinne G. Ciaccio
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Publication number: 20020055613Abstract: A method for the production of polyasparagine is provided wherein the polyasparagine is prepared by ammonolysis of polysuccinimide in liquid ammonia, acting both as a solvent and as a reactant, wherein the polysuccinimide can be any polysuccinimide, such as linear, branched or cross-linked, wherein the polyasparagine produced has high % N content and is neutral as opposed to anionic or cationic.Type: ApplicationFiled: August 14, 2001Publication date: May 9, 2002Applicant: MISSISSIPPI CHEMICAL CORPORATIONInventor: Zhongxin Ma
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Patent number: 6365706Abstract: A method for the production of polyasparagine is provided wherein the polyasparagine is prepared by ammonolysis of polysuccinimide in liquid ammonia, acting both as a solvent and as a reactant, wherein the polysuccinimide can be any polysuccinimide, such as linear, branched or cross-linked, wherein the polyasparagine produced has high %N content and is neutral as opposed to anionic or cationic.Type: GrantFiled: June 21, 2000Date of Patent: April 2, 2002Assignee: Mississippi Chemical CorporationInventor: Zhongxin Ma
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Patent number: 6328099Abstract: Free-flowing solid particles are dried in a moving bed dryer by passing the particles adjacent to a heat exchanger plate containing a heated fluid while passing a dehumidified gas into the solid particles from a gas flow manifold in the heat exchanger plate.Type: GrantFiled: April 21, 1999Date of Patent: December 11, 2001Assignee: Mississippi Chemical CorporationInventors: George Allen Hilt, Donald Ray Thomas
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Patent number: 5720794Abstract: An improved particulate, ammonium nitrate is prepared with 2.0-6.0 percent by weight potassium sulfate. The potassium sulfate suppresses crystalline phase IV.revreaction.III transitions in the ammonium nitrate particles while undergoing temperature variations between 18.degree.-42.degree. C. The resulting fertilizer, which may be further coated to further suppress dusting, exhibits superior resistance to caking, clumping and cracking.Type: GrantFiled: July 30, 1996Date of Patent: February 24, 1998Assignee: Mississippi Chemical CorporationInventor: Louis J. Tortorelli
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Patent number: 5078813Abstract: An explosive-grade ammonium nitrate product dimensionally stabilized with a hydratable internal additive in an amount from 0.05 to 2.0% (wt/wt), having a bulk density in the range from 0.80 to 0.96 gm/cm.sup.3, exhibiting a porosity such that the product will absorb and retain at least 5% (wt/wt) of a fuel oil, retaining a particulate (prill) hardness of at least 15 kg/cm.sup.2 and having a Caking Index of less than 1.4 kg/cm.sup.2.Type: GrantFiled: March 22, 1989Date of Patent: January 7, 1992Assignee: Mississippi Chemical CorporationInventors: Gerald L. Tucker, Bobby P. Barrington
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Patent number: 4774064Abstract: The invention relates to a process for the conversion of a calcium mineral into a calcium containing solid product and a gaseous stream which comprises subjecting the calcium mineral to a temperature in excess of about 3400 degrees Fahrenheit for less than one minute.Type: GrantFiled: December 23, 1986Date of Patent: September 27, 1988Assignee: Mississippi Chemical CorporationInventors: David Arnold, Daniel P. McDonald
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Patent number: 4521239Abstract: A particulate substrate provided with a protective coating, comprising particles of a substrate coated with the reaction product of at least one amine compound and a siloxane.Type: GrantFiled: November 29, 1982Date of Patent: June 4, 1985Assignee: Mississippi Chemical CorporationInventors: Douglas P. Simms, Joseph M. Dobbs
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Patent number: 4500502Abstract: A method of preparing a purified ammoniated phosphoric acid composition, comprising, reacting an aqueous wet process phosphoric acid with an ammonium ion source at a N/P.sub.2 O.sub.5 weight ratio ranging from about 0.06 to about 0.15 in the presence of solid phase metal ion containing impurities for a time sufficient to precipitate the majority of the impurities in the acid, the impurity precipitation comprising at least several complex metal salts at least one of which contains magnesium, aluminum and fluorine, and obtaining the purified ammoniated phosphoric acid by separating the precipitated impurities therefrom.Type: GrantFiled: June 28, 1983Date of Patent: February 19, 1985Assignee: Mississippi Chemical CorporationInventors: Daniel P. McDonald, James C. Wade
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Patent number: 4154593Abstract: A process for granulating ammonium phosphate containing composition for use as a fertilizer which comprises feeding a slurry or melt of ammonium phosphate, wherein said slurry or melt is capable of further reaction with ammonia, into a kneading mill, feeding recycled particles from the subsequent classification and crushing procedure into said kneading mill, wherein the said slurry or melt added to the mill is from 5 to 95% wt.Type: GrantFiled: February 16, 1977Date of Patent: May 15, 1979Assignee: Mississippi Chemical CorporationInventors: Marion L. Brown, Charles A. Johnson, III, Gerald L. Tucker
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Patent number: 4139601Abstract: A method for neutralizing nitric acid with ammonia comprising feeding nitric acid into a first aqueous reaction zone, feeding ammonia into a second aqueous reaction zone which has an inlet at the lower portion of the first reaction zone and is in circulating communication therewith, circulating the nitric acid downward within the first reaction zone into the inlet of the second reaction zone so that it is substantially diluted before entering the second reaction zone, whereby a predominent proportion of the nitric acid is reacted with the ammonia in the second reaction zone so as to form an ammonium nitrate solution, and removing the ammonium nitrate containing solution from the second reaction zone and recirculating the ammonium nitrate containing solution from the second reaction zone to the first reaction zone so that the solution and gases therefrom are substantially completely introduced into the first reaction zone with sufficient force so as to create a scrubbing turbulence of the gas as gas bubbles inType: GrantFiled: September 12, 1977Date of Patent: February 13, 1979Assignee: Mississippi Chemical CorporationInventors: Toby M. Cook, Gerald L. Tucker, Marion L. Brown
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Patent number: 4094643Abstract: A thermal syphon-pressure pump neutralizer for neutralizing nitric acid with ammonia, comprising a reaction vessel for containing an aqueous reaction medium and having a gas outlet in its upper end and a product outlet spaced therebelow, a fluid impervious vertically disposed cylindrical member in the vessel defining a second reaction zone therewithin and a first reaction zone between the member and the vessel, the lower inlet end of the cylindrical member being spaced above the bottom of the vessel, ammonia inlet means leading into the bottom of the vessel in close proximity to but spaced below the cylindrical member inlet, nitric acid inlet means leading into the first reaction zone being spaced a predetermined distance above the cylindrical member inlet and below the product outlet, a free gas zone being provided between the reaction zones and the gas outlet and deflector means above the second reaction zone and in communication with the first reaction zone so that solution and gases evolved from the outleType: GrantFiled: September 16, 1976Date of Patent: June 13, 1978Assignee: Mississippi Chemical CorporationInventors: Toby M. Cook, Gerald L. Tucker, Marion L. Brown
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Patent number: 4063920Abstract: Precipitate settling in ammonium polyphosphate liquid fertilizer solutions containing magnesium, iron, aluminum compound impurities, prepared by concentrating and ammoniating wet process orthophosphoric acid, is impeded by addition to the ammonium polyphosphate, prior to precipitate formation, a source of Cl.sup.- in amounts sufficient to alter the morphology of the precipitate crystals such that the length-to-width ratio of the crystals formed is increased by at least 200%, as compared to the ratio for crystals formed in the absence of Cl.sup.- addition. Since there is little propensity for the longer and thinner crystals to settle out of solution, the crystals remain innocuously suspended in the solution.Type: GrantFiled: September 20, 1976Date of Patent: December 20, 1977Assignee: Mississippi Chemical CorporationInventor: Charles W. Weston
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Patent number: 3981713Abstract: A particulate fertilizer comprising urea particles having a fertilizing quantity of available zinc in the form of zinc oxide which is homogeneously dispersed throughout the urea particles. The urea-zinc oxide particles may be prepared by dissolving zinc oxide into molten urea containing less than 12% by weight water, based on water/urea + water, and solidifying the molten urea-zinc oxide blend into particles of any desired form.Type: GrantFiled: July 23, 1971Date of Patent: September 21, 1976Assignee: Mississippi Chemical CorporationInventors: Gerald L. Tucker, Elmer Ladelle Blanton
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Patent number: 3941578Abstract: Urea particles uniformly coated with zinc oxide having excellent adherence and uniformity of the zinc oxide coating are obtained by using a zinc oxide composition characterized by having a purity of 90 to 99% zinc oxide and a uniform particle size of at least 90% smaller than 12 microns and at least 95% smaller than 37 microns. Outstanding coatings are obtained if the zinc oxide composition additionally contains traces of carbon, iron oxide, magnesium oxide, or calcium oxide. High zinc-content coatings of excellent uniformity and adherence may be obtained with these coating compositions.Type: GrantFiled: September 23, 1971Date of Patent: March 2, 1976Assignee: Mississippi Chemical CorporationInventors: Gerald L. Tucker, Elmer Ladelle Blanton