Patents
Sitemap › C07 - Organic chemistry › C07C - Acyclic or carbocyclic compounds › 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
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)
12/2012
12/19/2012EP2534129A1 Removal of ammonia in urea finishing
12/19/2012EP2533870A1 Falling-film stripper for carbamate decomposition
12/19/2012CN101948411B Method for synthesizing carbon-14 labeled urea
12/13/2012US20120316270 Diethylene tricarbamide and diethylene tricarbamide-formaldehyde condensation resins
12/13/2012US20120316058 Ionic liquids having uronium of thiouronium cations
12/12/2012CN202590408U Urea second-stage evaporator gas-phase flushing water device
12/12/2012CN102816091A Aqueous solution full-cycle urea energy-saving production process
11/2012
11/29/2012WO2012161620A1 Method for producing urea
11/29/2012US20120302789 Urea stripping process for the production of urea
11/28/2012EP2527922A1 Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, method of producing electrophotographic photosensitive member, and urea compound
11/28/2012CN102803157A Use of monochlorourea to treat industrial waters
11/28/2012CN102796055A Optimum method for co-producing melamine and urea
11/28/2012CN102796054A Method for constructing energy-saving and emission-reduction industrial cluster and radically treating melamine-polluted food
11/28/2012CN101827814B Novel carbamoylglycine derivatives
11/28/2012CN101823984B Process and device for reclaiming hydrolysis desorption heat energy
11/22/2012US20120296120 Falling-Film Stripper for Carbamate Decomposition
11/22/2012US20120296116 Process for the Production of L-Citrulline
11/21/2012CN102786442A Method of reducing energy consumption of synthetic feeding system of urea device
11/15/2012WO2012152645A1 High-yield process for the synthesis of urea
11/15/2012US20120289554 4-dimethylaminobutyric acid derivatives
11/15/2012CA2835337A1 High-yield process for the synthesis of urea
11/14/2012EP2521710A1 A urea stripping process for the production of urea
11/14/2012CN202527143U Charging suspension supporting mechanism for carbamide synthesizing tower
11/14/2012CN202526921U Urea evaporation and condensation system
11/14/2012CN1778287B Increased moisturization efficacy using hydroxyalkylurea
11/14/2012CN102775350A Process for the preparation of indazolyl ureas that inhibit vanilloid subtype 1 (VR1) receptors
11/14/2012CN101914042B Preparation method of nicarbazin midbody 4,4'- binitro sym-diphenylurea
11/06/2012US8304403 Heterocyclic CETP inhibitors
10/2012
10/31/2012CN102757366A Preparation method for urea peroxide with high active oxygen content by using microwave method
10/31/2012CN101781236B Method for preparing 3-(3,4-dichlorophenyl)-1-methoxy-1-methyl urea
10/24/2012CN102753518A Removal of ammonia in urea finishing
10/24/2012CN102746194A Industrial production method for continuously preparing Dailon
10/18/2012US20120265384 Controller and Control Method for a Motorised Vehicle
10/11/2012WO2012138209A1 One-step urea synthesis system and method
10/10/2012CN202478762U Urea prilling tower top dust recovery device
10/10/2012CN102718685A Preparation method and application of N-carbamyl-L-glutamic acid manganese complex
10/09/2012US8283494 Process for the preparation of urea
10/04/2012WO2012134288A1 Zero emission urea process and plant
10/04/2012US20120252999 Production of chemical compounds
10/04/2012CA2830648A1 Zero emission urea process and plant
10/03/2012EP2505581A1 Zero emission urea process and plant
10/03/2012CN202460628U Urea sulfate reaction tank
10/03/2012CN102712581A A urea stripping process for the production of urea
10/03/2012CN102702476A Preparation method for hexamethylene diisocyanate biruet
10/03/2012CN102702030A Method for synthesizing diuron original drug
10/03/2012CN102702029A Preparation process for tetrabutyl urea
10/03/2012CN101880246B Substituted benzoyl urea compound and preparation method and application thereof
10/03/2012CN101735114B Purification method of biuret
10/03/2012CN101309898B Compounds containing aldimine
09/2012
09/27/2012WO2012126979A1 Method for treating offgases from a melamine plant
09/27/2012WO2012126673A1 Process and plant for ammonia-urea production
09/27/2012CA2831183A1 Process and plant for ammonia-urea production
09/26/2012EP2502905A1 Method for treating offgases from a melamine plant
09/26/2012EP2502881A1 Process and plant for ammonia-urea production
09/26/2012CN202447071U Suspension fixing plate for urea synthetic tower
09/26/2012CN202447070U Steel ladder pedal mechanism for urea synthesizing tower
09/26/2012CN202447069U Gangway lever for urea synthesizing tower
09/26/2012CN202447068U Inclined support for urea synthetic tower
09/26/2012CN202447067U Support plate used for circular platform of urea synthesis tower
09/26/2012CN202447066U Round platform for urea synthesis tower
09/26/2012CN202447065U Fixing mechanism for round platform and steel ladder for urea synthesizer
09/26/2012CN202447064U Fixed mechanism used for suspender and round platform of urea synthesizer
09/26/2012CN202447059U Hanging fixing mechanism for urea converter
09/26/2012CN202446834U Moisture control device of urea products
09/26/2012CN102695675A Method for the separation of ammonia and carbon dioxide from aqueous solutions
09/25/2012CA2473224C Process for the preparation of urea
09/12/2012EP2497680A2 A controller and control method for a motorised vehicle
09/12/2012CN202427438U Overhanging fixing mechanism for urea synthetic tower
09/12/2012CN202427437U Passageway for urea synthesis tower
09/12/2012CN102659637A Novel method for preparing dihydroxyurea
09/12/2012CN102659636A Alkali-free production technology of centralite II
09/12/2012CN101671281B Method for extracting oxime compounds from cymoxanil mother liquor wastewater to synthesize cymoxanil
09/11/2012US8263805 Process and plant for urea production
09/11/2012CA2494382C Process for increasing the capacity of a urea plant
09/11/2012CA2445159C Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds
09/07/2012WO2012117099A1 Process for preparing polyisocyanates containing biuret groups
09/07/2012WO2012081885A3 Enantiomerically pure binaphthol derivatives and method for preparing the same
09/06/2012US20120226075 Polyureas as rheology control agents
09/06/2012US20120226071 Process for preparing polyisocyanates comprising biuret groups
09/05/2012CN202418557U Novel sealed flange for special valve for urea synthesizer
09/05/2012CN202415414U Urea production device
09/05/2012CN101786968B Method for reducing decarburization energy consumption of N-Methyldiethanolamine (MDEA)
08/2012
08/22/2012CN202387457U Suspension fastener for urea synthesizing tower
08/22/2012CN202387454U Passageway rod fixing mechanism for urea synthesizer
08/22/2012CN202387451U Double-platform connection mechanism for urea synthesizing tower
08/22/2012CN202387448U Platform support mechanism for urea synthesize tower
08/22/2012CN202387447U Suspension support wall reinforcement mechanism for urea synthesis tower
08/22/2012CN202387446U Round platform supporting mechanism for urea synthesis tower
08/22/2012CN102642876A Method for co-production of urea and methanol by treating high-concentration ammonia nitrogen and 1, 5-cyclooctadiene (COD) sewage
08/16/2012WO2011099844A8 Removal of ammonia in urea finishing
08/15/2012CN102635536A Method for preventing CO2 from being liquefied in five-section type CO2 compressor
08/15/2012CN102634416A Method for performing enzymolysis and enrichment on alpha-linolenic acid (ALA) with perilla frutescens oil
08/08/2012CN102627585A Carbamyl glycine dipeptide chelated zinc and preparation method thereof
08/08/2012CN102627584A Carbamyl glycine dipeptide chelated copper and preparation method thereof
08/08/2012CN102627583A N-Carbamyl-L-glutamic acid copper complex and its preparation method
08/02/2012WO2012100532A1 Modified 1,6-hexamethylene diisocyanate biuret curing agent and preparation method therefor
08/01/2012EP1761484B1 Method of improving the crushing strength and reducing the dust formation and the caking tendency of urea, and urea composition
08/01/2012CN202359046U High-position-energy recovery device of urea solution
08/01/2012CN102617827A Curing agent modified 1,6-hexamethylene diisocyanate biuret (HDI biuret) and preparation method thereof
08/01/2012CN102617407A Method for preparing weedicide diuron
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