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| Number | Title | Issue Date |
| 7816561 | Method of improving the crushing strength and reducing the dust formation and the caking tendency of urea, and urea composition The invention relates to a method of improving the crushing strength and reducing the dust formation and the caking tendency of urea particles by the addition of an organic compound to the molten urea, where at least one carbohydrate and optionally a polyvinyl compo... | 10/19/2010 |
| 7264746 | Urea based granule blend for ice-melting and reducing granule caking A urea based granule blend configured for ice-melting and reducing granule caking, the blend comprising substantially pure urea granules comprising an ice-melting property and formaldehyde coated urea granules configured for reducing granule caking, wherein the blen... | 09/04/2007 |
| 6417396 | Quenching reagents for solution phase synthesis A method for enhancing the purity of a desired compound comprising: Step (a) treating a crude reaction product which contains at least one desired compound, unreacted starting materials and/or byproducts with at least one bifunctional quenching agent that is c... | 07/09/2002 |
| 6121488 | Quenching reagents for solution phase synthesis A method for enhancing the purity of a desired compound comprising: Step (a) treating a crude reaction product which contains at least one desired compound, unreacted starting materials and/or byproducts with at least one bifunctional quenching agent that is c... | 09/19/2000 |
| 6084129 | Process for reducing the residual free ammonia emissions from an urea production plant A process for reducing the residual free ammonia emissions from an urea production plant comprises the step of feeding a gas flow comprising carbon dioxide (8) to a melt urea flow (3) coming from the concentration section (13) of the plant.... | 07/04/2000 |
| 5955632 | Seco-d steroids active on the cardiovascular system, processes for their preparation and pharmaceutical compositions containing them New seco-D steroid derivatives, processes for their preparation and pharmaceutical compositions are provided, which are active on the cardiovascular system. The seco-D steroid derivatives have the following general formula (I): ##STR1##... | 09/21/1999 |
| 5527961 | Process for reducing the ammonia content of a gaseous effluent from urea production plants A process for neutralizing the ammonia present in the molten urea originating from the concentration section of a plant for its production, comprising adding to the molten urea a small quantity of an acid.... | 06/18/1996 |
| 5501720 | Spray-dried urea-formaldehyde and lignosulfonate compositions A delayed release fertilizer composition consisting essentially of a mixture of a urea-formaldehyde resin and a lignosulfonate prepared by spray-drying an aqueous mixture of a urea-formaldehyde resin and a lignosulfonate. The composition of this invention... | 03/26/1996 |
| 5001233 | Synthesis of hydroxylamines using dioxiranes The subject invention relates to a method of synthesizing hydroxylamines from secondary amines. This method uses a dioxirane compound such as dimethyldioxirane (DMD, which is relatively stable and simple to synthesize), as the oxidizing agent. The reactio... | 03/19/1991 |
| 4676821 | Sulfur-coated urea The present invention teaches a technique and provides for apparatus eminently useful for reducing the amount of sulfur currently needed by industry to coat water-soluble fertilizer materials such as, for example, granular or prilled urea. A further advan... | 06/30/1987 |
| 4587358 | Production of high-strength, storage-stable particulate urea One approach to improving storage stability, particularly that attribute characterized by reduction in the tendency for caking during storage of freshly prepared urea particles such as granules, is to treat the surface areas of the freshly prepared partic... | 05/06/1986 |
| 4404116 | Noncorrosive urea-sulfuric acid reaction products Improved liquid, urea-sulfuric acid compositions noncorrosive to stainless steel contain about 5 to about 75 weight percent urea, about 5 to about 85 weight percent sulfuric acid, 0 to about 75 weight percent water and a corrosion inhibiting amount of a c... | 09/13/1983 |
| 4402852 | Noncorrosive urea-sulfuric acid compositions Improved, liquid, urea-sulfuric acid reaction product compositions, noncorrosive to carbon steel, contain about 5 to about 75 weight percent urea, about 5 to about 85 weight percent sulfuric acid, 0 to about 75 weight percent water, and a corrosion inhibi... | 09/06/1983 |
| 4304588 | Foliar feed compositions Storage-stable, concentrated aqueous solution of nitrogenous compounds consisting essentially of urea and monomethylol urea singularly suited for the foliar feeding of plants. Upon application to a plant the urea content of the solution is quickly availab... | 12/08/1981 |
| 4160782 | Process for treating urea bodies Urea bodies, such as crystals, prills, pellets and the like, with a reduced caking tendency are obtained by processing such bodies or a concentrated urea solution or melt produced in the urea synthesis, which is processed to form such bodies, with an aque... | 07/10/1979 |
