| 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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| 03/01/1989 | EP0304886A2 Oligomer benzil ketals and their use as photoinitiators |
| 02/23/1989 | WO1989001468A1 Process for enhanced urea production |
| 02/21/1989 | CA1250314A1 Urea synthesizing process utilizing silicon carbide materials in its equipment |
| 02/21/1989 | CA1250290A1 PROCESS FOR RESOLUTION OF OPTICAL ISOMERS OF .beta.- ADRENERGIC AGENTS |
| 02/15/1989 | EP0303227A1 Ethers and thioethers having therapeutical activity, their preparation and pharmaceutical compositions containing them |
| 02/15/1989 | EP0303150A2 Process for the production of poly-isocyanates containing allophanate groups |
| 02/15/1989 | CN1031078A Process for recovering urea entrained by vapours in vacuum concentration systems |
| 02/08/1989 | EP0302213A1 Process for the recovery of urea entrained by vapours in vacuum concentration systems |
| 01/31/1989 | US4801747 Process for preparing urea |
| 01/31/1989 | US4801746 Process for the preparation of urea |
| 01/31/1989 | US4801745 Improved process for the preparation of urea |
| 01/31/1989 | US4801744 Selenium catalyst |
| 01/17/1989 | CA1248866A1 Falling-film apparatus for the equicurrent evaporation of a solution |
| 01/10/1989 | CA1248545A1 Process for the production of polyisocyanates which have a biuret structure |
| 01/10/1989 | CA1248544A1 Process for the preparation of polyisocyanates with biuret structure |
| 12/28/1988 | CA1247645A Process for the manufacture of urea having a low steam comsumption |
| 12/28/1988 | CA1247609A Benzoylurea compounds, and pesticidal compositions comprising same |
| 12/14/1988 | CN88102855A Improvements of processes and plants for the production of urea |
| 12/07/1988 | EP0293880A1 Antihyperlipidemic and antiatherosclerotic urea compounds |
| 12/06/1988 | CA1246092A1 Process for the production of urea group-containing polyisocyanates |
| 11/08/1988 | CA1244472A1 Process for preparing phenylisopropylurea compounds |
| 11/02/1988 | CN88102271A Process for concentrating urea solution |
| 11/01/1988 | CA1244052A1 Process for concentrating an already concentrated urea solution to form a practically anhydrous melt |
| 10/18/1988 | US4778915 Fluoroacrylic monomers and polymers |
| 10/11/1988 | US4777276 Coatings, films, printing inks and adhesives |
| 10/11/1988 | CA1243144A1 Process for producing a crosslinking component for cationic paint binders |
| 10/05/1988 | EP0285500A1 Substituted ureas, process for their preparation and their application in the finishing of cellulose fibres |
| 09/28/1988 | CN88101281A Process for the hydrolysis of urea in dilute aqueous urea solution |
| 09/27/1988 | CA1242454A1 Biuret production by controlled pyrolysis of urea |
| 09/06/1988 | CA1241663A1 Production of animal feed grade biuret |
| 09/01/1988 | DE3805403A1 Process for the preparation of urea |
| 08/17/1988 | EP0278562A2 Process for producing calcium urea-nitrate |
| 08/10/1988 | EP0277487A2 Storage stable polyisocyanates characterized by allophanate linkages |
| 08/10/1988 | EP0277353A1 Process for the preparation of polyisocyanates containing biuret groups |
| 07/27/1988 | CN87107627A Process for preparing urea |
| 07/26/1988 | US4760178 Forming monomeric compounds containing hydroxy alkyl amide group |
| 07/26/1988 | US4760163 3-(5-carboxy-4-substituted-phenyl)-(thio)uracil-esters and salts |
| 07/19/1988 | US4758311 Method for avoiding the corrosion of the strippers in the urea manufacturing plants |
| 07/12/1988 | US4757105 Process for the production of finely divided polyisocyanates containing urea groups |
| 07/06/1988 | CN87107799A Process for separating unconverted raw materials |
| 06/28/1988 | CA1238651A1 Method for the combined production of ammonia and urea |
| 06/15/1988 | EP0270804A1 Process for the preparation of finely divided polyisocyanates containing urea groups |
| 06/07/1988 | US4749806 Process for the synthesis of isocyanates and of isocyanate derivatives |
| 06/07/1988 | US4749595 Fluidized bed; spraying fine droplets of molten coating material |
| 06/01/1988 | EP0269378A1 Quinazolinone derivative and processes for preparing the same |
| 05/31/1988 | US4747915 Falling-film process for the cocurrent evaporation of a solution |
| 05/24/1988 | US4746755 Preparation of hydrantoic acids and hydantoins |
| 05/24/1988 | US4746352 3-(5-carboxy-4-substituted-phenyl)-(thio)uracil-esters and salts |
| 05/24/1988 | CA1237145A1 Acetylenic compounds containing urea moieties useful as environmental indicating materials |
| 05/11/1988 | EP0266840A1 Process for preparing urea |
| 05/11/1988 | EP0266839A1 Process for concentrating a urea solution and installation for carrying out the process |
| 05/11/1988 | CN87107625A Process for concentrating urea solution and installation for carrying out process |
| 05/04/1988 | EP0265818A2 Process for the preparation of N,N-disubstituted beta-aminoacids and their use in water-proofing leather and skins |
| 04/27/1988 | EP0264752A1 Process for the preparation of N,N-diarylureas |
| 04/26/1988 | US4740618 Process for the preparation of monocyclohexylurea |
| 04/26/1988 | EP0215848A4 Carbonylation process. |
| 04/19/1988 | US4738991 Catalytic reaction with alcohol |
| 04/13/1988 | EP0263506A2 Anticonvulsant composition containing amino acid derivative and use of said amino acid derivative |
| 04/12/1988 | CA1235139A1 Process for preparing aminoalkylureas |
| 04/12/1988 | CA1235138A1 Process for the production of modified polyisocyanates, the compounds obtainable by this process and their use in polyurethane lacquers |
| 04/06/1988 | EP0263059A2 Complexes amides |
| 04/06/1988 | EP0263044A2 Process for the isolation and purification of polyisocyanates containing biuret groups |
| 03/15/1988 | US4731415 Biurets from a,a,a*,a*-tetramethylxylylene diisocyanate |
| 03/09/1988 | EP0259233A2 Process for the preparation of polyisocyanates with a biuret structure |
| 02/23/1988 | US4727077 Benzoyl urea compounds, process for their production, and antitumorous compositions containing them |
| 02/16/1988 | US4725680 Amination, cleavage, neutralization |
| 02/16/1988 | CA1232916A1 Arginyl-3-carboxy-4-hydroxyanilide |
| 02/10/1988 | EP0255718A2 Use of amphiphilic amide compounds in Z-type Langmuir-Blodgett films |
| 02/10/1988 | EP0255678A1 Process for production of benzoyl ureas |
| 01/07/1988 | EP0251952A2 Process for the preparation of polyisocyanates having a biuret structure |
| 12/23/1987 | EP0250037A2 Process for the preparation of urea derivatives and catalyst system |
| 12/22/1987 | US4714772 Functionalized monomers from 1-(1-isocyanato-1-methylethyl)-3 or 4-(1-methylethenyl) benzene |
| 12/01/1987 | US4710360 Apparatus for dissolving urea and other endothermic materials |
| 11/24/1987 | US4709087 Process for the synthesis of isocyanates and of isocyanate derivatives |
| 11/19/1987 | EP0246061A2 A benzoylurea derivative and its production and use |
| 10/20/1987 | US4701555 Methods for removing biuret from urea by adsorption |
| 10/06/1987 | US4698443 Biuret purification |
| 10/06/1987 | US4698365 Pesticidal benzoylurea compounds |
| 09/29/1987 | US4696761 De-foamer and processes for its production |
| 09/09/1987 | CN87100956A Process for preparation of n-benzoyl-n'-phenylureas |
| 09/02/1987 | EP0235089A2 N-benzoyl-N'-phenyl ureas, their preparation and their use against pests |
| 09/02/1987 | CN86108203A Process for preparation of acyl ureas |
| 09/01/1987 | US4690812 Integrated production of ammonia and urea |
| 08/27/1987 | WO1987005014A1 Tricyclic compounds, process for their preparation, and medicinal composition containing them |
| 07/28/1987 | CA1224797A1 Acrylamidoacylated oligomers |
| 07/22/1987 | EP0229667A2 Peptidylaminodiols |
| 07/14/1987 | US4680367 Process for the production of urea group-containing polyisocyanates |
| 07/07/1987 | US4678856 Nitro compound, primary amine, carbon monoxide, alcohol |
| 07/01/1987 | EP0226642A1 Benzoylurea derivatives, process for their preparation, and insecticides |
| 07/01/1987 | CN86106647A Benzoylphenylureas |
| 06/16/1987 | EP0225673A1 Process for the preparation of acyl ureas |
| 06/03/1987 | CN86106645A Process for processing granules |
| 06/02/1987 | US4670588 Process for the production of urea |
| 05/27/1987 | EP0223648A2 Fluorinated monomers, their polymers and their use as water-proofing and oil-proofing agents for various substrates |
| 05/27/1987 | EP0223440A1 A process for the production of high energy material |
| 05/27/1987 | DE3636531A1 Process for the preparation of blocked mono- or polyisocyanate compounds |
| 05/26/1987 | US4668411 Diurea type grease composition |
| 05/19/1987 | US4666942 Pesticidal benzoylurea compounds |
| 05/14/1987 | DE3539631A1 Process for the preparation of oligomethyleneurea mixtures |
| 05/12/1987 | US4665055 Peptide renin inhibitors |