Class / Patent application number | Description | Number of patent applications / Date published |
071030000 | With nitrogen-containing substances | 22 |
20090007616 | METHOD OF INHIBITING CORROSION ON FERROUS METAL SURFACES IN CONTACT WITH NITROGEN FERTILIZER SOLUTIONS - A method of using trace amounts of certain compounds to reduce or inhibit corrosion on metal surfaces exposed to corrosive materials is disclosed. The compounds include hydroxlamines, acrylate polymers or copolymers, certain organic acids, tannic acid, carbohydrazide and its derivates and salts, and combinations of these compounds. The metal surfaces may include any ferrous metal piping or equipment surfaces, such as that used during storage, transport, and other processing of such materials. A corrosion-inhibited UAN solution having about 20 to about 50 percent by weight water and from less than 10 to about 1,000 ppm of one or more of the described corrosion inhibitors, and a pH from about 7 to about 8 is also disclosed. | 01-08-2009 |
20090064747 | Liquid Fertilizing Compositions - Liquid fertilizer compositions and methods of making liquid fertilizer compositions are set forth herein. In one embodiment, a liquid fertilizing composition includes an aqueous ammonium chloride solution having a pH between 6.5 and 8.5, a dispersant selected from anionic polyacrylamides, and a corrosion inhibitor. In another embodiment, a liquid fertilizing composition includes an aqueous solution having a pH between 6.5 and 8.5. The solution includes at least 16.5 percent by weight of ammonium chloride and between 0.5 and 1.0 percent by weight of dispersant. In yet another embodiment, a liquid fertilizing composition has a pH between 7.5 and 8.5. The composition consists essentially of at least 16.5 percent by weight ammonium chloride, between 0.5 and 1.0 percent by weight dispersant, an effective amount of corrosion inhibitor, and water. | 03-12-2009 |
20090133457 | HIGH NITROGEN LIQUID FERTILIZER - The present invention is directed to liquid fertilizer composition having a high nitrogen content comprising an aqueous mixture of a urea-formaldehyde resin and a nitrogen fertilizer source selected from the group consisting of urea, ammonium nitrate, and a mixture of urea and ammonium nitrate, wherein the liquid fertilizer possess surprisingly depressed freeze points and salt-out temperatures. | 05-28-2009 |
20100011825 | Controlled Release Fertilizer Composition - A controlled release fertilizer composition and methods to produce the controlled release fertilizer composition are described. The controlled release fertilizer composition comprises a water soluble fertilizer core that is coated with a polymeric layer, intermediate layer, and a sulfur layer. If desired, the sulfur layer can be coated with an outer water-insoluble layer. | 01-21-2010 |
20100031719 | FERTILIZER GRANULES AND MANUFACTURING PROCESS THEREOF - The invention relates to a fertilizer granule comprising both a nitrate and urea as the main nitrogen source. A mineral added during production is an important component in the composition, said mineral stabilizing these otherwise poorly compatible nitrogen compounds. A high nitrogen content is thus attained with ammonium nitrate concentrations falling below maximum limit values set by international legislation and classification, while at the same time the explosion risk particularly associated with the use of ammonium nitrate is avoided. The invention is also directed to a process for the production of the fertilizer granule of the above type, said process resulting in a fertilizer granule with excellent resistance properties and a high nitrogen content, wherein said granule may be coated by methods typical in the art, if desired. | 02-11-2010 |
20100206030 | Buffered amino alcohol solutions of N-(n-butyl)thiophosphoric triamide (NBPT) and urea fertilizers using such solutions as urease inhibitors - Reduced volatility of urea fertilizers are prepared in accordance with the present invention by first preparing an N-(n-butyl)-thiophosphoric triamide (NBPT) solution by dissolving NBPT in a mixture of an amino alcohol having the formula 1—(H) | 08-19-2010 |
20100206031 | Amino alcohol solutions of N-(n-butyl)thiophosphoric triamide (NBPT) and urea fertilizers using such solutions as urease inhibitors - A method of producing reduced volatility of urea fertilizers comprising: dissolving N-(n-butyl)-thiophosphoric triamide (NBPT) in an amino alcohol having the formula 1 —(H) | 08-19-2010 |
20110079063 | NUTRIENT ENHANCED BIOSOLIDS PELLETS - A dry, flowable fertilizer is provided that includes multiple dry, flowable biosolids pellets. Each of the pellets has a pellet surface. Potassium salt grains are adhered to the pellet surfaces and a dust control agent coating is applied to retain the grains on the pellet surfaces. The resultant dry, flowable fertilizer has higher potassium loadings to the potassium salt grains than previous biosolids based fertilizers. A process of forming a fertilizer is also provided that includes tumbling dry, flowable biosolids pellets with powdered potassium salt grains to form a mixture. An aqueous spray is added to adhere the salt grains to the pellet surfaces. With the application of a dust control agent, the salt grains are retained. Potassium levels in NPK units of from 1 to 15 are routinely achieved with greater than 90 elemental % of the potassium is from the surface decorating potassium salt grains. | 04-07-2011 |
20110094277 | NANO-SCALE UREA PARTICLES AND METHODS OF MAKING AND USING THE PARTICLES - Methods for synthesizing nano-urea particles are described. The methods involve using a spinning cone reactor, a nano-channel reactor, combustion synthesis or spray drying. Ammonia and carbon dioxide are used as raw materials for producing urea. The methods allow for the production of urea nanoparticles at high conversion rates. The methods allow for better control over the hydrolysis rate of the nano-urea particles. The nano-urea particles can be used as fertilizers and provide for sustained release of ammonia and its conversion to nitrates in the soil. The nano-urea particles have low volatilization rates, low moisture absorption rates and low biuret concentration. The nano-urea particles can be applied to the soil via fertigation. | 04-28-2011 |
20120174641 | SURFACE ACTIVE INGREDIENT COMPOSITION - The invention provides a surface active ingredient composition, which includes a base liquid including water which has dispersed therein in percentages by volume: Sodium Chloride—1 to 3%; Magnesium—1 to 2%; Calcium—1 to 2%; Potassium—1 to 2%; Sulfate—1 to 2%; Carbon—0.5 to 1%; Nitrate—1 to 2%; and Phosphate—1 to 2%; sodium chloride dissolved in the base liquid; and sodium alkyl ether sulfate dissolved in the base liquid, with the portion of the base liquid to sodium chloride and sodium alkyl ether sulfate being between 1:1:1.5 and 1:1:5. The invention further provides a process for producing same and uses thereof. | 07-12-2012 |
20120240649 | REMOVAL OF UREA AND AMMONIA FROM EXHAUST GASES - The invention relates to a method for recovery of urea dust and ammonia from a gas stream by contacting said gas stream with an aqueous sulphuric acid solution, thus forming an acid solution of ammonium sulphate and urea, characterized in that the acid solution is concentrated to a melt comprising less than 5 wt % of water, which melt is subsequently transferred into solid particles comprising urea and ammonium sulphate. | 09-27-2012 |
20130160507 | MIXTURE FOR TREATING FERTILIZERS - The invention relates to an aqueous solution of a mixture for treating urea-based fertilisers/fertilisers containing ammonium that contains 1,2,4-triazole and 3-methylpyrazole in the weight ratio 2/1 and at least one polyvinyl alcohol, polyvinylpyrrolidone and a tenside. | 06-27-2013 |
20130276495 | ADDITIVE CONTAINING N-(N-BUTYL)THIOPHOSPHORIC TRIAMIDE FOR UREA-BASED FERTILIZER - A dry flowable additive for aqueous urea-based fertilizers made of solid urea formaldehyde polymer (UFP), N-(n-butyl) thiophosphoric triamide (NBPT), and, optionally, dicyandiamide (DCD), wherein the liquid fertilizer containing the additive provides reduced nitrogen loss from the soil. Optionally, the dry additive may also be blended with molten or solid urea to form a solid urea-based fertilizer with reduced nitrogen loss from the soil. | 10-24-2013 |
20130305797 | DUST SUPPRESSING AGGREGATE - A dust suppressing aggregate includes a core particle and a dust suppressing agent. The dust suppressing agent comprises polyurethane and is disposed about the core particle for suppressing dusting of the core particle. A method of forming the dust suppressing aggregate includes the steps of providing the core particle and encapsulating the core particle with the polyurethane. | 11-21-2013 |
20140090433 | REMOVAL OF UREA AND AMMONIA FROM EXHAUST GASES - The invention relates to a method for recovery of urea dust and ammonia from a gas stream by contacting said gas stream with an aqueous sulphuric acid solution, thus forming an acid solution of ammonium sulphate and urea, characterized in that the acid solution is concentrated to a melt comprising less than 5 wt % of water, which melt is subsequently transferred into solid particles comprising urea and ammonium sulphate. | 04-03-2014 |
20140260470 | NITROGEN FERTILIZER COMPOSITION AND METHOD TO IMPROVE DETECTION AND LESSEN THE EXPLOSIVE POTENTIAL OF NITROGEN-BASED FERTILIZERS - A nitrogen fertilizer composition includes urea and a nitrate-based fertilizer such as ammonium nitrate, calcium ammonium nitrate and mixtures of ammonium nitrate and calcium ammonium in which the urea and total nitrogen are at concentrations of 20 percent by weight or greater and the concentration of ammonium nitrate is at 30 percent or greater by weight. One or both of the urea and nitrate-based fertilizer are coated with an agriculturally compatible material. The fertilizer composition provides significant nitrate nitrogen for legitimate agricultural use yet is not amenable to the production of an explosive by crushing or by aqueous extraction. A pleasant smelling odorant is added to the composition to facilitate detection. | 09-18-2014 |
20150052960 | UREASE INHIBITOR AND NON-UFP SOLID CARRIER COMPOSITION - An improved composition comprising a non-UFP solid carrier and an active agent, such as NBPT, and optionally other components is used as an additive for liquid and solid fertilizers, typically containing urea. Methods of making the compositions and their use are also disclosed. | 02-26-2015 |
20150315091 | MICROENCAPSULATED NITRIFICATION INHIBITOR COMPOSITION - The present invention relates to an improved nitrification inhibitor composition and its use in agricultural applications. | 11-05-2015 |
20160052833 | REACTION PRODUCTS AND METHODS FOR MAKING AND USING THE SAME - Reaction products and methods for making and using the same are provided. In at least one specific embodiment, the fertilizer can include a nitrogen source comprising urea, ammonia, ammonium nitrate, or any combination thereof and a reaction product of formaldehyde, an ammonia source, and a nitrification inhibitor. | 02-25-2016 |
20160060184 | REACTION PRODUCTS AND METHODS FOR MAKING AND USING SAME - Reaction products and methods for making and using the same are provided. The reaction products particularly may include adducts of two or more reactants. The adducts particularly can incorporate a nitrification inhibitor, such as DCD. In particular embodiments, reaction products may be formed from the reaction of formaldehyde, DCD, urea, and an ammonia source. The adducts may be included in agricultural products, including fertilizer compositions and nitrification inhibitor systems. Fertilizer compositions including the adducts can be beneficial for reducing leaching of nitrification inhibitors applied to soil. | 03-03-2016 |
20160075609 | COMPOSITIONS OF UREA FORMALDEHYDE PARTICLES AND METHODS OF MAKING THEREOF - An improved composition comprising substantial spherical UFP particles and an active agent, such as NBPT, and optionally other components is used as an additive for liquid and solid fertilizers, typically containing urea. Methods of making the compositions and their use are also disclosed. | 03-17-2016 |
20190144354 | Compositions For Controlling Enzyme-Induced Urea Decomposition | 05-16-2019 |