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Matches 151 - 200 out of 2,085

Document Document Title
WO/2013/139802A1
The present invention relates to a polymer composition comprising at least one polyamide and at least one urea compound of the formula I where x is 1, 2 or 3; R1 and R2 are selected from hydrogen, linear C1-C7-alkyl, branched C3-C10-alky...  
WO/2013/140402A1
An aqueous biocidal composition comprising a mixture of hydrochloric acid (HC1), urea, and sodium hypochlorite (NaOC1) at acidic pH, a method for manufacturing the composition and a biocidal technology for treating industrial water.  
WO/2013/130968A1
Provided are compounds according to the following Formula (I). The Formula (I) compounds are activated in the presence of reactive oxygen species (ROS) and are therefore selective anti-cancer therapeutics for cancers associated with elev...  
WO/2013/108191A1
A method of forming urea by integration of an ammonia production process with that of a urea production process, as well as a system for said method is disclosed, as well as an alternative method of forming urea by integration of a part ...  
WO/2013/104638A1
A process for the direct synthesis of urea from ammonia and carbon dioxide with increased corrosion resistance, comprising, in the high-pressure synthesis section, a reaction step in a vertical reactor (R) fed with at least one stream of...  
WO/2013/102589A1
Process for the co-production of methanol and urea from a hydrocarbon feed without venting large amounts of carbon dioxide to the atmosphere.  
WO/2013/091285A1
Provided are a urea compound having a structure as represented by general formula I, preparation method thereof, pharmaceutical composition containing the compound, and uses thereof in the preparation of drugs for treating inflammatory r...  
WO/2013/095130A1
Disclosed is a process for the production of ammonia comprising a step wherein synthesis gas is formed in two different ways, viz. by catalytic partial oxidation (31) and by steam reforming, and wherein the combined streams of synthesis ...  
WO/2013/083378A1
A process for synthesis of urea and a related reaction section of a urea plant, where: ammonia and carbon dioxide are reacted in a liquid phase in a first reaction zone (S1) and heat (Q1) is withdrawn from said first reaction zone to pro...  
WO/2013/056559A1
Provided are a modified diphenylmethane diisocyanate (MDI) biuret curing agent and preparation method thereof, the curing agent being prepared by reacting dibasic alcohol, water and MDI in an organic solvent; the molar ratio between the ...  
WO/2013/055219A1
Disclosed is a method for urea finishing. A urea solution is subjected to crystallization and, other than in conventional processes, the urea crystals are shaped by exerting mechanical force onto them. Thus, the conventional prilling or ...  
WO/2013/004220A3
What are described are: a method and an installation for generating electrical energy and for producing hydrogen, ammonia and/or silicon. In order to store excess electrical energy, this excess electrical energy is used for producing hyd...  
WO/2013/034319A1
A plant for synthesis of urea with a CO2-stripping process, comprising a natural-circulation synthesis loop, said loop including at least a urea reactor (1), a carbon dioxide stripper (2) and a condenser (3), said reactor, stripper and c...  
WO/2013/025109A1
The invention relates to a method for urea production and to a urea production plant wherein ammonia emission in the final step of forming urea prills is reduced. In the method, the concentration of a urea solution is performed in at lea...  
WO/2012/177136A1
Disclosed is a process for the production of a syngas mixture by catalytic partial oxidation. The syngas mixture is suitable as an intermediate in the production of hydrogen. According to the invention, the syngas is cooled, prior to a w...  
WO/2012/177137A1
Disclosed is a process for the production of ammonia comprising a step wherein synthesis gas is formed by catalytic partial oxidation. Also disclosed is a process of producing urea, wherein ammonia is formed in a process involving a step...  
WO/2012/161620A1
Urea is produced in a reactor at elevated temperature and pressure and a molar ratio of NH3:CO2 = (3.4-3.7):1, with the separate removal of gases and a liquid urea synthesis melt, the subsequent separation of excess ammonia from the urea...  
WO/2012/152645A1
A process for the direct synthesis of urea from ammonia and carbon dioxide at high pressures and temperatures, with the formation of ammonium carbamate as intermediate, comprising a decomposition step of the ammonium carbamate and stripp...  
WO/2012/138209A1
The present invention provides a one-step urea synthesis system. In one embodiment, the system comprises a magnetic induction zone, a reaction chamber being disposed in and between the magnetic induction zone, a plurality of platforms be...  
WO/2012/134288A1
Disclosed is a method for the production of urea allowing a substantial reduction, even down to zero, of the continuous emission of ammonia conventionally resulting from such a process. According to a preferred embodiment of the inventio...  
WO/2012/126673A1
A process for ammonia -urea production where: liquid ammonia produced in an ammonia section is fed to a urea section directly at the ammonia synthesis pressure, and where the liquid ammonia is purified at high pressure with the steps of:...  
WO/2012/126979A1
The present invention relates to a method for treating or using offgases (3) obtained in a melamine plant comprising at least one melamine synthesis reactor (1) and at least one washing unit (2) in an integrated process for urea and mela...  
WO/2012/081885A3
The present invention relates to compounds 1, 1a (S-enantiomer) and 1b (R-enantiomer) of the following formula 1, and a method for preparing the same. [formula 1] The novel compound of the formula 1 is used as an important intermediate f...  
WO/2012/117099A1
The present invention relates to a process for preparing polyisocyanates containing biuret groups from di- or polyisocyanates with diamines.  
WO/2011/099844A8
Disclosed is a method for the removal of ammonia from the off-gas of a finishing section of a urea production plant. The method comprises contacting the off-gas with a solid adsorbent capable of physically adsorbing ammonia, particularly...  
WO/2012/100532A1
A modified 1,6-hexamethylene diisocyanate biuret curing agent and a preparation method therefor. The 1,6-hexamethylene diisocyanate biuret curing agent is formed by reacting a diol, water, and 1,6-hexamethylene diisocyanate in an organic...  
WO/2012/095236A1
According to the invention, a method for providing urea particles in a solvent medium is provided. The method comprises the steps of • providing at least one polyisocyanate component dissolved in a first solvent; • providing at least...  
WO/2012/089137A1
Disclosed in the present invention is an arylurea compound represented by formula I, or a pharmaceutically acceptable salt, a polymorph, a solvate or a stereoisomer thereof, and an intermediate and use thereof. The arylurea compound I of...  
WO/2012/088776A1
Preparation methods of 2-(N-substituted)-amino-benzimidazole derivatives are disclosed, compring such steps: (1) reacting 2-(N-protecting group)-benzene-1,2-diamines with N- phenoxycarbonylamines to obtain 2-(N-substituted)-amino-aryl ur...  
WO/2012/081885A2
The present invention relates to compounds 1, 1a (S-enantiomer) and 1b (R-enantiomer) of the following formula 1, and a method for preparing the same. [formula 1] The novel compound of the formula 1 is used as an important intermediate f...  
WO/2012/076611A1
What is described is the use of a nucleating agent in the preparation of polyurea adducts from at least one amine and at least one isocyanate, wherein the nucleating agent is not isomorphous to the resulting polyurea adduct formed from t...  
WO/2012/015962A3
Provided is a method for preparing a grease composition, which comprises mixing an amine in a lubricating bas oil and an isocyanate in a lubricating base oil under high pressure and high flow rate impingement. In one embodiment, the mixi...  
WO/2012/050041A1
The present invention provides a pest control agent, an acaricide, or a bactericide that contains, as the active ingredient thereof, at least one type of compound selected from aryloxyurea compounds represented by formula (V) (wherein R1...  
WO/2012/050482A1
Carbamide is produced at a high temperature and pressure in a plant which comprises a high pressure section including a reactor, a stripper, a condenser and a scrubber. Ammonia and carbon dioxide are reacted in the reactor to form a reac...  
WO/2012/038954A2
The invention provides a process for manufacturing biocidal compositions containing bromourea derivatives, including the reaction of salts or adducts of the urea derivatives with an oxidizer.  
WO/2011/122917A3
The present invention relates to an octahydrobinaphthol derivative which recognizes an amino acid and amino alcohol in a chiral-selective manner, converts L-amino acid into D-amino acid, and performs optical resolution on an amino acid a...  
WO/2012/025038A1
Disclosed is a continuous manufacturing method for the synthesis of hydazo dicarbonamide. The method comprises: (1) adding hydrazine hydrate and a urea solution into an oscillating flow tube crystallizer via the mid-lower section thereof...  
WO/2012/015962A2
Provided is a method for preparing a grease composition, which comprises mixing an amine in a lubricating bas oil and an isocyanate in a lubricating base oil under high pressure and high flow rate impingement. In one embodiment, the mixi...  
WO/2012/011845A1
The invention relates to a device and a method for producing carbamide from carbon dioxide and liquid ammonia at elevated temperature and pressure. The apparatus comprises a high-pressure section, which includes a reactor, and also a con...  
WO/2011/162610A1
The invention relates to urea plant with a CO2 and NH3 feed, which comprises a purge line, characterized in that the purge line is connected with a fuel gas input line of a utility plant or an NH3 plant.  
WO/2011/157530A1
A method for revamping a self-stripping urea plant is disclosed, where an intermediate recovery section (30) is installed between the existing high- pressure section and medium-pressure section; a stream of urea solution (15A), which is ...  
WO/2011/134648A1
Vertical reactor for effecting gas-liquid biphasic reactions, comprising a plurality of perforated plates, superimposed and suitably spaced between each other along the vertical axis, wherein a dividing septum is positioned vertically in...  
WO/2011/136231A1
Disclosed is a process for producing a high-purity bisaminophenylalkylurea as the desired compound in high yield while attaining a high volumetric efficiency and generating little by-product. A (nitrophenyl)alkylamine hydrohalogenide rep...  
WO/2011/126389A1
The invention relates to methods and apparatus for the production of granulated carbamide. The technical result is to ensure efficient utilization of the heat of crystallization of the carbamide, which is liberated in the process of prod...  
WO/2011/122917A2
The present invention relates to an octahydrobinaphthol derivative which recognizes an amino acid and amino alcohol in a chiral-selective manner, converts L-amino acid into D-amino acid, and performs optical resolution on an amino acid a...  
WO/2011/104387A1
A process for preparing urea is described, in which ammonia is reacted with carbon dioxide to give urea. Ammonia is obtained here from silicon nitride/aluminum nitride or silicon nitride/aluminum nitride-containing material and water in ...  
WO/2011/099844A1
Disclosed is a method for the removal of ammonia from the off-gas of a finishing section of a urea production plant. The method comprises contacting the off-gas with a solid adsorbent capable of physically adsorbing ammonia, particularly...  
WO/2011/098335A1
A stripper (SN) for carbamate decomposition and ammonia plus carbon dioxide recovery from a urea solution (U) is realized with a shell-and-tube heat exchanger, where a liquid falling film of urea solution and a counter- current gaseous f...  
WO/2010/147965A3
A manufacturing process for the preparation of radiolabeled compounds of formula (I) includes reacting compounds of formula (II) with a source of readionuclide of a halogen in the presence of an oxidant under acidic condition, wherein: *...  
WO/2011/084060A1
The invention relates to a process for producing urea wherein an aqueous urea solution, leaving a urea reaction zone is fed to a stripper, where a part of the non-converted ammonia and carbon dioxide is separated from the aqueous urea so...  

Matches 151 - 200 out of 2,085