| 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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| 11/30/1990 | CA2012624A1 A method of manufacturing aromatic urethanes |
| 11/28/1990 | EP0399422A1 Benzocycloalkane derivatives and production thereof |
| 11/27/1990 | CA1276803C Production of high-strength storage-stable particulate urea |
| 11/25/1990 | CA2017444A1 Benzocycloalkane derivatives and production thereof |
| 11/22/1990 | EP0398404A1 A process for the preparation of acyl ureas |
| 11/20/1990 | CA1276745C Process for the preparation of a polyiscocyanate with a biuret group |
| 11/13/1990 | US4970319 Process for the preparation of acyl isocyanates |
| 11/13/1990 | CA1276166C Carbonylation process |
| 11/07/1990 | CN1010308B Process for preparing urea |
| 11/06/1990 | US4968706 Mucolytic, antitussive, bronchodilator, antiinflammatory |
| 11/06/1990 | CA1276026C Functionalized monomers from 1-(1-isocyanato-1- methylethyl)-3 or 4-(1-methylethenyl) benzene |
| 10/31/1990 | EP0395578A2 Acylated carbamic acid esters |
| 10/31/1990 | EP0395144A1 A process for the preparation of aromatic ureas |
| 10/31/1990 | CN1046523A Fungicides |
| 10/24/1990 | CA2015004A1 Acylated carbamates |
| 10/02/1990 | CA1274849A1 N-(2,6-difluorobenzoyl)-n'-3,5-dichloro-4-[3,3,3,- trifluoro-2-chloroprop-1-en-yl]phenyl-urea having insecticide activity |
| 09/12/1990 | EP0386487A1 Novel N-(substituted aryl)-N'-(substituted alkoxy)-ureas and thioureas as antihypercholesterolemic and antiatherosclerotic agents |
| 09/11/1990 | CA1273925A1 Process for preparing 1,3,5-triazinetriones |
| 08/22/1990 | CN1009274B Process for preparing a substituted phenylurea |
| 08/21/1990 | US4950795 Oligomeric benzil ketals and their use as photoinitiators |
| 08/08/1990 | EP0381330A1 Fungicides |
| 08/02/1990 | CA2008291A1 Fungicides |
| 07/11/1990 | CN1043702A Benzamide compounds,their preparation and their use as pesticides |
| 07/04/1990 | EP0375712A1 Process for enhanced urea production. |
| 07/03/1990 | EP0375712A4 Process for enhanced urea production. |
| 06/27/1990 | EP0375069A1 Benzamide compounds, their preparation and their use as pesticides |
| 06/27/1990 | EP0374653A1 Process for the preparation of N,N'-bis(3-aminophenyl)ureas |
| 06/21/1990 | CA2005963A1 Benzamide compounds, their preparation and their use as pesticides |
| 06/20/1990 | CN1043125A Substituted aryl ureas as high protency sweeteners |
| 06/20/1990 | CN1043124A Process for preparation of methylene diphenylene bis (dialkyl ureas) and polymethylene pohyphenylene poly (dialkyl ureas) |
| 06/20/1990 | CN1008422B Process for processing granules |
| 06/06/1990 | EP0371698A1 Process for the preparation of methylene diphenylene bis (dialkyl-ureas) and polymethylene polyphenylene poly (dialkyl-ureas) |
| 05/31/1990 | CA2003314A1 Process for the preparation of methylene diphenylene bis (dialkyl-ureas) and polymethylene polyphenylene poly(dialkyl-ureas) |
| 05/29/1990 | CA1269800A1 4 h-3, 1-benzoxazin-4-ones and related compounds |
| 05/02/1990 | EP0226642B1 Benzoylurea derivatives, process for their preparation, and insecticides |
| 05/01/1990 | US4921997 Method of synthesis and novel compounds for pharmaceutical uses |
| 04/17/1990 | US4918227 Converting benzoyl halides to azides, then to isocyanates, reacting with benzamides |
| 03/28/1990 | EP0360748A1 Benzoylphenylureas |
| 03/27/1990 | CA1267152A1 Polyisocyanates and resin compositions thereof |
| 03/20/1990 | CA1266860A1 Amphiphile lipidic compositions, process for their preparation and uses, particularly as cosmetics and in dermatology |
| 03/08/1990 | WO1990002112A1 Substituted aryl ureas as high potency sweeteners |
| 03/07/1990 | EP0357488A1 Process for the linked production of olefines and ammonia from natural gas, and use of this process in the production of urea |
| 03/06/1990 | CA1266473A1 Benzoyl urea compounds, useful as anti-tumor drugs |
| 03/01/1990 | DE3925751A1 Crosslinkers for cathodically-deposited paint binders |
| 02/28/1990 | EP0355819A1 Substituted aryl ureas as high potency sweeteners |
| 02/15/1990 | DE3824488A1 Process for the preparation of symmetrical dialkylureas |
| 02/13/1990 | US4899813 Zirconium-lined stainless steel tubes |
| 01/24/1990 | EP0351603A2 Transvinylation reaction |
| 01/23/1990 | US4895983 Process for producing methylol urea solution and process for producing slow-releasing nitrogenous fertilizer using the same |
| 01/23/1990 | US4895921 Water soluble or dispersible blocked polyisocyanates and a process for their preparation and use |
| 12/28/1989 | WO1989012622A1 Method of synthesis and novel compounds for pharmaceutical uses |
| 12/06/1989 | EP0344425A2 N-[[(2,6-disubstituted)phenyl]-N'- arylalkyl] ureas as antihypercholesterolemic and antiatherosclerotic agents |
| 11/29/1989 | CN1037504A Process for preparation of aromatic bis dialkyl ureas |
| 11/23/1989 | EP0343110A1 Benzoyl phenyl urea compounds |
| 11/02/1989 | EP0340072A1 Acrylic derivative of urea |
| 10/17/1989 | US4874860 Reacting a biuret with a dialkyl carbonate |
| 10/17/1989 | US4874595 Process for producing calcium-urea nitrate |
| 10/04/1989 | EP0335374A2 N-[[(2,6-disubstituted)phenyl]-N'-diarylalkyl] ureas as antihyperlipidemic and antiatherosclerotic agents |
| 09/27/1989 | EP0334720A1 Process for the preparation of acyl isocyanates |
| 09/26/1989 | US4869887 Integrated ammonia-urea process |
| 09/26/1989 | CA1260396A1 Readily absorbable pharmaceutical composition |
| 09/20/1989 | EP0333350A2 Process for the preparation of aromatic bis dialkyl ureas |
| 09/12/1989 | US4866207 Process for concentrating an urea solution by evaporation |
| 09/05/1989 | USH676 Salt formation, dewatering |
| 09/05/1989 | US4864059 Process for producing urea |
| 08/30/1989 | CN1035110A Process for concentrating urea solution |
| 08/30/1989 | CN1035109A Process for the preparing urea |
| 08/23/1989 | EP0329215A1 Process for the preparation of urea |
| 08/23/1989 | EP0329214A1 Process for concentrating a urea solution |
| 08/22/1989 | US4859753 Branched lipopeptide polymers forming thermotropic and lyotropic liquid crystals, their applications and corresponding monomers |
| 08/16/1989 | EP0327981A1 Process for the preparation of 2-cyano-3-aminoacryl nitrile derivatives |
| 08/15/1989 | US4857556 Substituted benzylcycloalkenylurea derivatives |
| 08/09/1989 | EP0327504A1 N-Benzoyl-N'-trifluorophenylureas, their preparation and use for the control of pests |
| 08/08/1989 | US4855398 Reaction of bicyclic amide acetal with urea |
| 08/08/1989 | US4855298 6-Halo-1,2,3,4-tetrahydroquinazoline-4-spiro-4-imidazolidine-2,2'5'-triones useful for the treatment and prophylaxis of diabetic complications |
| 08/08/1989 | US4854934 Substituted ureas for ennobling cellulose fibres |
| 08/02/1989 | EP0325941A2 Process for the preparation of modified polyisocyanates, polyisocyanates so obtained and their use |
| 08/01/1989 | US4853478 Antidegradation monomers |
| 07/26/1989 | EP0325115A2 N,N'-bis (5-isocyanatonaphthyl) urea, process for its preparation, and use |
| 07/25/1989 | US4851567 N,N'-bis(5-isocyanatonaphthyl)urea, a process for its production, and its use |
| 07/19/1989 | EP0324175A1 Difluorphenyl urea derivatives |
| 07/19/1989 | CN1033992A Process for enhanced urea production |
| 07/18/1989 | US4849425 Readily absorbable pharmaceutical composition |
| 07/12/1989 | EP0218615B1 Process for the manufacture of benzoyl urea |
| 06/28/1989 | EP0321815A2 Process for the preparation of etherified methylol alkyl ureas, dispersions and use thereof |
| 06/21/1989 | EP0320703A2 Process for the preparation of biuret polyisocyanates, compounds obtained by this process and use |
| 06/07/1989 | EP0319111A2 Process for the preparation of phenyl ureas |
| 06/06/1989 | US4837359 From diisocyanate and diamine, both containing aliphatically and/or cycloaliphatically bound isocyanate and amino groups |
| 05/31/1989 | CN1033179A Process of direct synthesis of 4,4-dinitro-triphenyl urea |
| 05/30/1989 | US4835312 Production process of N-substituted amide compounds |
| 04/26/1989 | EP0313166A1 Process for preparing urea and water starting from ammonia and carbon dioxide |
| 04/26/1989 | EP0312836A2 Water-soluble or -dispersable, blocked polyisocyanates, a method for their preparation and their use |
| 04/11/1989 | US4820871 Process for the preparation of N,N-diaryl-ureas |
| 04/05/1989 | EP0310015A2 Renin-inhibiting dipeptides, process for their preparation, medicines containing them and their use |
| 03/28/1989 | US4816600 Liquid cationic polyurea and polybiruet/polyether copolymers; storage stability; kinetics; process control |
| 03/21/1989 | US4814499 Process for preparation of substituted phenylureas |
| 03/15/1989 | EP0306614A2 Improvements of processes and plants for the production of urea |
| 03/14/1989 | CA1251221A1 Method of manufacturing aromatic urethane and intermediate product thereof |
| 03/08/1989 | EP0306055A2 N-(halobenzoyl)-N'-2-halo-4-[1,1,2-trifluoro-2-(trifluoro-methoxy)ethoxy]-phenyl-ureas with insecticide activity |
| 03/07/1989 | US4810820 Process for the production of polyisocyanates containing allophanate groups |