| 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) |
|---|
| 05/12/1998 | US5750080 Method for in-situ modernization of a urea synthesis reactor |
| 04/30/1998 | WO1998017635A1 Process for the urea synthesis from ammonia and carbon dioxide |
| 04/29/1998 | CN1180071A Improved urea synthesis process and apparatus therefor |
| 04/28/1998 | US5744009 Method and apparatus for recovering condensables in vapor from a urea vacuum evaporator |
| 04/16/1998 | DE19707576C1 Preparation of biuret structure poly:isocyanate(s) |
| 04/14/1998 | US5739398 Reacting a urea with an alkenyl carboxylate at elevated temperatures in the presence of a base |
| 04/08/1998 | EP0834501A2 Improved urea synthesis process and apparatus therefor |
| 04/08/1998 | CN1178516A Process for preparing granular urea |
| 04/07/1998 | US5736003 Apparatus for concentrating urea solutions under vacuum |
| 04/07/1998 | CA1339804C Process for the preparation of acyl isocyanates |
| 04/01/1998 | EP0832684A1 Method of detecting clogging and method of granulation |
| 03/24/1998 | US5731352 Therapy for disorders of the melatoninergic system |
| 03/17/1998 | CA1339745C Pesticidal benzoylurea compounds |
| 03/11/1998 | CN1175965A Process for producing polyisocyanates contg. biuret groups |
| 03/05/1998 | WO1998008808A1 Process for the preparation of urea |
| 02/26/1998 | WO1998007921A1 Process for preparing aqueous, concentrated solutions of n-methylolethers suitable for finishing cellulosic textile materials |
| 02/26/1998 | WO1998007771A1 Process for producing polyisocyanates containing biuret groups from (cyclo) aliphatic diisocyanates |
| 02/26/1998 | WO1998007763A1 Phosgenated oxime resins and their preparation |
| 02/26/1998 | DE19633625A1 Verfahren zur Herstellung von für die Ausrüstung von cellulosehaltigen textilen Materialien geeigneten wäßrigen konzentrierten Lösungen von N-Methylolethern A method for preparing suitable for the finishing of cellulose-containing textile materials aqueous concentrated solutions of N-methylol ethers |
| 02/26/1998 | DE19633404A1 Verfahren zur Herstellung von Biuretgruppen enhaltenden Polyisocyanaten aus (cyclo)aliphatischen Diisocyanaten A process for preparing biuret polyisocyanates containing of from (cyclo) aliphatic diisocyanates, |
| 02/25/1998 | EP0825211A1 Process for the preparation of allophanates containing aliphatic and/or cycloaliphatic and/or araliphatic isocyanate groups |
| 02/17/1998 | US5719298 Reacting pantothenic acid acetonide with urea compound in the presence of acylating agent |
| 02/11/1998 | CN1173171A Process and plant for urea production with reaction spaces having differentiated yields |
| 02/11/1998 | CN1172799A Process and plant for production of urea with high conversion yield and low energy consumption |
| 02/04/1998 | EP0822181A1 Process and plant for the production of urea with high conversion yield and low energy consumption |
| 02/03/1998 | US5714633 Forming an arylalkynol by coupling an aryl halide or sulfonyl with an alkynol, replacing the hydroxyl with a br or cl leaving group, forming an n-hydroxyarylalkynl followed by reaction with cyanate, cost effective on a large scale |
| 01/29/1998 | WO1998003518A2 New bis-platinum complexes with polymethylene derivatives as ligands having antitumor activity |
| 01/29/1998 | WO1998003477A1 Process for the urea synthesis from ammonia and carbon dioxide and apparatus for carrying out the process |
| 01/29/1998 | CA2265459A1 Process for the urea synthesis from ammonia and carbon dioxide and apparatus for carrying out the process |
| 01/27/1998 | US5712312 Melatoninergic receptor ligands, treatment of sleep disorders |
| 01/21/1998 | EP0819106A1 Process for preparing granular urea |
| 01/08/1998 | WO1998000394A1 2-chloro-3,5-bis(trifluoromethyl)phenyl benzoyl urea derivative and process for preparing the same |
| 01/07/1998 | EP0816309A1 Scavenger assisted combinatorial process for preparing libraries of urea and thiourea compounds |
| 01/06/1998 | US5705690 Urea-surfactant clathrates and their use in bioremediation of hydrocarbon contaminated soils and water |
| 01/06/1998 | US5705666 Process for the preparation of crystalline O-isopropylisourea hydrochloride |
| 12/31/1997 | WO1997049680A1 Il-8 receptor antagonists |
| 12/31/1997 | CN1169144A Process and plant for prodn. of urea with high conversion yield and low energy consumption |
| 12/31/1997 | CA2258850A1 Il-8 receptor antagonists |
| 12/30/1997 | US5703121 Method of treating disorders of the melatoninergic system and a certain benzofuran containing compound |
| 12/17/1997 | CN1167650A Process for producing granules |
| 12/14/1997 | CA2207164A1 Scavenger assisted combinatorial process for preparing libraries of urea and thiourea compounds |
| 12/10/1997 | CN1166927A Methylol urea composite additives and productive method thereof |
| 12/09/1997 | US5696290 Synthesis of penta-substituted guanidines |
| 12/09/1997 | US5696138 Urea derivatives and their use |
| 12/04/1997 | WO1997045400A1 Phenyl derivatives containing an acidic group, their preparation and their use as chloride channel blockers |
| 12/03/1997 | EP0809663A1 Process for producing polyisocyanates containing biuret groups |
| 12/03/1997 | EP0741702A4 Process for preparing 2-oxindole-1-carboxamides |
| 12/03/1997 | CN1166829A Iminooxymethylene anilides, process and intermediate products for preparing the same and pesticides containing the same |
| 12/03/1997 | CN1036582C Cheap, energy-saving, safety urea production process and its plant |
| 12/02/1997 | US5693665 Alkylated (hetero) cyclic compounds |
| 12/02/1997 | US5693310 Amide complexes |
| 11/13/1997 | WO1997042230A1 Rapid purification by polymer supported quench |
| 11/13/1997 | CA2251700A1 Rapid purification by polymer supported quench |
| 11/12/1997 | CN1164854A Novel synthesis of penta-substituted guanidines |
| 11/11/1997 | US5686647 Ammonia, carbon dioxide, formaldehyde, hexamethylenetetramine |
| 11/11/1997 | US5686645 Synthesis of isocyanate precursors from primary formamides |
| 11/11/1997 | US5686085 Facilitating compaction |
| 11/04/1997 | US5684194 Carbamate decomposition treatment; retrofitting engineering plants |
| 10/28/1997 | US5681858 Cycloalkyl hydroxyureas |
| 10/28/1997 | US5681537 Circulation, reuse of ammonia and carbon dioxide vapors |
| 10/23/1997 | WO1997038789A1 Method of detecting clogging and method of granulation |
| 10/15/1997 | EP0800512A1 Antiherpes peptidomimetic compounds |
| 10/08/1997 | EP0799194A1 Process and plant for urea production with reaction spaces having differentiated yields |
| 09/30/1997 | US5672736 Binder |
| 09/25/1997 | WO1997034690A1 Safety process for pressure equipment in contact with corrosive fluids |
| 09/24/1997 | EP0796244A1 Process and plant for the production of urea with high conversion yield and low energy consumption |
| 09/18/1997 | WO1997033895A1 Isolated rna molecules which bind to arginine and uses thereof |
| 09/10/1997 | EP0793645A1 Iminooxymethylene anilides, process and intermediate products for preparing the same and pesticides containing the same |
| 09/03/1997 | EP0639178B1 Anti-atherosclerotic aryl compounds |
| 09/03/1997 | CN1158582A Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the prodn. of urea |
| 08/27/1997 | EP0790981A1 Aryloxycycloalkenyl and aryloxyiminocycloalkenylhydroxyureas as 5-lipoxygenase inhibitors |
| 08/26/1997 | US5660801 Reusing unreacted ammonia and carbon dioxide in second reactor |
| 08/20/1997 | CN1157581A Method for in-situ modernization of urea synthesis reactor |
| 08/19/1997 | US5658945 Anticancer agent; aids therapy; controlling infections |
| 08/19/1997 | US5658944 Anticholesterol agents |
| 08/07/1997 | WO1997028100A1 Process for preparing granular urea |
| 08/06/1997 | EP0787036A1 Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature |
| 08/05/1997 | US5653781 Process for the production of urea granules |
| 07/17/1997 | WO1997025308A1 Fluorocarbon-containing isocyanate derivatives and soil-resist agents |
| 07/16/1997 | CN1154363A Method for prepn. of urea by carbon dioxide stripping method |
| 07/09/1997 | EP0782490A1 Method for restoring the functionality of equipment subjected to heavy corrosion in a plant for the production of urea |
| 07/02/1997 | EP0781272A1 Novel synthesis of penta-substituted guanidines |
| 07/02/1997 | EP0781164A1 Method for in-situ modernization of a urea synthesis reactor |
| 06/24/1997 | US5641851 Preparation of biuret-containing polyisocyanates |
| 06/19/1997 | WO1997021685A1 Retroviral protease inhibiting compounds |
| 06/19/1997 | CA2509505A1 Retroviral protease inhibiting compounds |
| 06/10/1997 | US5637769 Urea-modified carbodiimide and process for production thereof |
| 06/04/1997 | CN1150946A Curable compositions for coatings |
| 05/28/1997 | CN1035003C Urea production process of high energy efficiency |
| 05/27/1997 | US5633280 Urethanes and ureas that induce cytokine production |
| 05/20/1997 | US5631405 Method of forming amino acid-derived diaminopropanols useful as chemical intermediates for protease-inhibitors |
| 05/01/1997 | WO1997015388A1 Hydrolysis reactor for removal of urea, ammonia and carbon dioxide from a liquid phase comprising urea in aqueous solution |
| 05/01/1997 | WO1997015280A1 Use of at least one no synthase inhibitor for treating sensitive skin |
| 04/23/1997 | EP0769003A1 Amino acid-derived diaminopropanols |
| 04/16/1997 | CN1147772A Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature |
| 04/10/1997 | DE19536733A1 Urea and uronic acid adducts prepn. useful in cosmetics |
| 04/08/1997 | US5618966 Method forming protease inhibitor synthetic intermediates |
| 04/01/1997 | US5616612 Therapy for cancer, aids, anemia, infections |
| 04/01/1997 | US5616596 Substituted arylalkynyl-and heteroarylalkynl-N-hydroxyurea inhibitors of leukotriene biosynthesis |
| 03/26/1997 | CN1145897A New aryl (alkyl) propylamides process for preparing them and pharmaceutical compositions containing them |