| Patents for C07C 273 - Preparation of urea or its derivatives, i.e. compounds containing any of the groups the nitrogen atoms not being part of nitro or nitroso groups (3,705) |
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| 08/25/2009 | US7579502 For reacting ammonia with carbon dioxide; stripper; production plants |
| 08/18/2009 | US7576245 Using a fluorinated phenyl compound containing electrophilic and nucleophilic groups; increasing the fluorous nature of an organic compound; 4-(1H,1H,2H,2H-Perfluorodecyl)benzenesulfonamide; N-[4-(1H,1H,2H,2H-perfluorodecyl)benzyloxycarbonyloxy]succinimide |
| 08/12/2009 | EP2086928A1 Process for urea production and related plant |
| 08/12/2009 | EP1089988B1 Fluorophenyl resin compounds |
| 08/11/2009 | US7572849 Urea phenyl derivatives and their use as polypropylene nucleating agents |
| 08/06/2009 | WO2009095164A1 Method for producing urethanes |
| 08/06/2009 | US20090198087 Method and Device for Providing a Reducing Agent Precursor |
| 08/06/2009 | DE102008006881A1 Verfahren zur Herstellung von Urethanen A process for the preparation of urethanes |
| 08/06/2009 | DE102005054462B4 Verfahren zur Bandkonditionierung bei Pastillieranlagen A method for band conditioning at pastillation |
| 08/05/2009 | CN100522907C Method for producing aromatic compound dimer |
| 07/29/2009 | EP1893668B1 N-(2-hydroxyalkanoyl) -n,n'-dialkylureas and a process for their preparation |
| 07/29/2009 | CN101492398A Urea production process of high-efficiency condensation, low-mounting height CO2 air stripping method and high-voltage lamp type full condensation reactor |
| 07/22/2009 | EP1299354B1 Factor viia inhibitory (thio)urea derivatives, their preparation and their use |
| 07/15/2009 | CN201272755Y Explosion-proof apparatus used for urea production system |
| 07/14/2009 | US7560593 essential intermediates for producing nitroguanidine insecticides; cost efficient and no mercaptan byproduct odor; reacting O-methyl-N-nitroisourea and methylamine and catalytic sodium hydrogen carbonate to produce N,O-dimethyl-N'-nitroisourea |
| 07/09/2009 | WO2009086256A1 Adhesion-promoting agent for protective coatings |
| 07/09/2009 | US20090176307 Compounds, Compositions and Methods |
| 07/09/2009 | CA2707792A1 Adhesion-promoting agent for protective coatings |
| 07/08/2009 | EP2076488A1 Carbamoylation of amines, thiophenols, mercaptanes and phenols employing organic azides |
| 07/08/2009 | CN100509768C Process for urea production from ammonia and carbon dioxide |
| 07/08/2009 | CN100509767C Integrated process for urea/melamine production and related plant |
| 06/30/2009 | US7553963 Liquid partially trimerized and allophanized polyisocyanates based on toluene diisocyanate and diphenylmethane diisocyanate |
| 06/30/2009 | CA2249524C Protective lining for pressure equipment which can be used in processes for the synthesis of urea |
| 06/16/2009 | US7547428 Industrial scale synthesis without fossil fuel source |
| 06/11/2009 | WO2009071533A1 Polyisocyanates containing allophanate groups |
| 06/10/2009 | CN201254540Y Ball cap on urea synthetic tower tray |
| 06/04/2009 | US20090142813 Processes for the production of l-citrulline |
| 06/02/2009 | CA2422898C Carbamate condensation unit |
| 05/28/2009 | WO2009065534A1 Method for the recovery of ammonia from a gaseous stream in an synthesis process of urea |
| 05/28/2009 | CA2705927A1 Method for the recovery of ammonia from a gaseous stream in a synthesis process of urea |
| 05/27/2009 | CN101440049A Cleaning method for synthesizing N,N'-diphenylurea |
| 05/22/2009 | WO2009063804A1 Process for production of n-carbamoyl-tert-leucine |
| 05/21/2009 | US20090131718 Crystallized diacetylenic indicator compounds and methods of preparing the compounds |
| 05/20/2009 | CN101434869A Integrated molded coal liquefaction method |
| 05/14/2009 | US20090124830 Reacting ammonia and carbon dioxide at a predetermined high pressure to produce aqueous solution contining urea, ammonium carbamate and ammonia, dissociation in a treatment section at medium pressure for the recovery of the ammonium carbamate and ammonia contained in it, recyling in urea recovery section |
| 05/14/2009 | US20090124489 spraying urea-containing liquid at above melting point into high particle density region of spray zone of near circular gas, material flow of spouted bed apparatus, onto surface, which is dried and granulated; for reducing emissions from diesel engines |
| 05/13/2009 | EP1641746A4 Polyurea polymers from secondary polyether polyamines |
| 05/12/2009 | US7531576 N-alkyl-N-(p-substituted-phenyl)benzylamine that is N-substituted with carbocyclic aminocarbonylalkylene, aminocarbonyl, or aminocarbonylaminosulfonyl; ACAT inhibitors; treating e.g.,hypercholesterolemia and atherosclerosis |
| 04/29/2009 | CN100482642C Preparing process for biurea |
| 04/23/2009 | WO2009050041A1 Novel carbamoylglycine derivatives |
| 04/21/2009 | US7521480 Such as 2-[3-(3-Bromo-phenyl)-ureido]-4-chloro-5-methyl-benzenesulfonic acid which is selective and non-competitive antagonist of ionotropic GluR5 receptor |
| 04/15/2009 | EP2003104A9 Reagent for organic synthesis and method of organic synthesis reaction with the reagent |
| 04/15/2009 | CN101407477A Method for synthesizing diphenylurea from urea and aniline |
| 04/15/2009 | CN101407326A Waste combustion power generation and urea coproduction with synthetic ammonia combined production method |
| 04/15/2009 | CN100478330C Method of preparing 3-(3,4-dichloro-phenyl)-urea |
| 04/09/2009 | WO2009043365A1 Process and plant for urea production |
| 04/08/2009 | CN100475784C Continuous process for producing MDI allophanate |
| 04/02/2009 | DE102006059760B4 Verfahren zur kontinuierlichen Herstellung von hochreiner Harnstofflösung A process for the continuous production of high-purity urea solution |
| 04/01/2009 | CN101400647A Method for nitrating isourea |
| 03/26/2009 | US20090082595 Process for the production of phosphorous compounds |
| 03/19/2009 | US20090076285 Process for the treatment of an aqueous mixture comprising a dipolar aprotic compound |
| 03/12/2009 | WO2009032188A1 Method and system for removing impurities from a urea solution |
| 03/12/2009 | DE102006036007B4 Rückspaltung von Polyurethanen Cleavage of polyurethanes |
| 03/12/2009 | CA2698026A1 Method and system for removing impurities from a urea solution |
| 03/10/2009 | US7501442 Bronchodilators; treating chronic obstructive pulmonary disease or asthma; long duration of action; reduced side effects, such as dry-mouth and constipation; e.g. biphenyl-2-ylcarbamic acid 1-[2-((6-[2-(4-hydroxyphenyl)ethylamino]-hexanoyl)-methylamino)ethyl]piperidin-4-yl ester |
| 03/05/2009 | US20090062566 reactor contains a stripper for stripping the urea synthesis obtained from reacting ammonia with carbon dioxide, using raw material carbon dioxide to separate a gas mixture containing the unreacted ammonia, carbon dioxide; recycling; heavy condenser at low position |
| 03/05/2009 | US20090062383 Salts of Substituted Allophanates and Their Use in Drugs |
| 03/04/2009 | CN101379026A Process for production of O-methyl-n-nitroisourea |
| 03/04/2009 | CN101379025A Improved method for producing nitroisourea derivative |
| 03/03/2009 | US7498464 Reacting aqueous ammonia and CO2; stripping unreacted ammonia and CO2 using raw material CO2; obtaining a condensed liquid by condensing the gas mixture and recycling; and measuring the density of the condensed liquid online using a noncontact type density meter. |
| 03/03/2009 | US7498055 Process for the preparation of urea granules |
| 02/26/2009 | WO2009025829A1 Processes for the production of l-citrulline |
| 02/26/2009 | WO2008138809A3 Method and device for the treatment of an ammonium carbonate solution |
| 02/25/2009 | CN101372465A Industrial method for extracting natural L-citrulline from water melon or smacking watermelon and other plant tissues |
| 02/19/2009 | WO2008139121A3 Method for the synthesis of (z)-3-[2-butoxy-3'-(3-heptyl-1-methyl-ureido)-biphenyl-4-yl]-2-methoxy-acrylic acid |
| 02/17/2009 | US7491826 Substituted urea derivatives activate the cardiac sarcomere by potentiating cardiac myosin; systolic heart failure including congestive heart failure; 1-[3-(1-Acetyl-piperidin-3-yloxy)-5-fluoro-phenyl]-3-(6-methoxy-pyridin-3-yl)-urea |
| 02/11/2009 | CN201193219Y Novel carbamide CO2 stripper device |
| 02/05/2009 | US20090036712 For reacting ammonia with carbon dioxide; stripper; production plants |
| 02/05/2009 | US20090036711 industrial scale nitration of O-methylisourea in presence of fuming sulfuric acid |
| 02/04/2009 | CN201190140Y High pressure methylamine injector |
| 02/04/2009 | CN201190139Y Two-stage evaporation and separation system of urea synthetic apparatus |
| 02/04/2009 | CN100457837C Carbon-substituted methyl amine derivatives and their use as a rheology control agent |
| 02/04/2009 | CN100457724C Process for the preparation of urea |
| 01/27/2009 | CA2637505A1 Allophanate modified diphenylmethane diisaocyanates, prepolymers thereof, and their use in the preparation of polyureas and polyureaurethanes |
| 01/27/2009 | CA2238936C Process for the preparation of arylalkynyl-n-hydroxyurea derivatives having lipoxygenase inhibitory activity |
| 01/21/2009 | CN101348447A Novel process of medium-pressure ammine recovery system for urea water solution complete cycle production |
| 01/21/2009 | CN101348264A Clean low energy consumption synthesis ammonia production method |
| 01/15/2009 | US20090018364 Method for nitrating isourea |
| 01/14/2009 | EP1525187B1 Process for increasing the capacity of a urea plant |
| 01/14/2009 | CN100450998C Urea derivative and process for producing the same |
| 01/07/2009 | CN101340959A Process for the treatment of an aqueous mixture comprising a dipolar aprotic compound |
| 01/07/2009 | CN101337930A Urea derivative and process for producing the same |
| 01/07/2009 | CN101337913A High-pressure scrubber for flushing carbamide production system by gas-phase tube method |
| 12/31/2008 | CN101333176A Method for preparing substituent urea and co-producing hydrochloride of corresponding amines |
| 12/30/2008 | US7470415 Heating reforming; catalytic cracking |
| 12/17/2008 | EP2003104A2 Reagent for organic synthesis and method of organic synthesis reaction with the reagent |
| 12/11/2008 | US20080306136 Substituted Ureas and Carbamates |
| 12/10/2008 | CN201161988Y Integral multi-layer fastening type urea synthetic tower |
| 12/10/2008 | CN101318914A Method for preparing urea phosphoric acid with wet-process phosphoric acid |
| 12/04/2008 | US20080300422 Process For The Preparation Of Urea |
| 12/03/2008 | EP1997802A1 Method for nitrating isourea |
| 11/27/2008 | WO2008141832A1 Enhanced process for the synthesis of urea |
| 11/27/2008 | CA2687668A1 Enhanced process for the synthesis of urea |
| 11/26/2008 | CN100436393C Method for concurrently producing dimethyl ether, liquefied natural gas and urea |
| 11/20/2008 | WO2008139121A2 Method for the synthesis of (z)-3-[2-butoxy-3'-(3-heptyl-1-methyl-ureido)-biphenyl-4-yl]-2-methoxy-acrylic acid |
| 11/20/2008 | WO2008138499A1 Insecticidal substituted thiourea derivatives |
| 11/20/2008 | CA2686388A1 Method for the synthesis of (z)-3-[2-butoxy-3'-(3-heptyl-1-methyl-ureido)-biphenyl-4-yl]-2-methoxy-acrylic acid |
| 11/19/2008 | EP1992228A1 Insecticidal substituted thiourea derivatives |
| 11/19/2008 | CN101309898A Compounds containing aldimine |
| 11/19/2008 | CN100434152C Process for the preparation of urea granules |