| Patents for C07C 263 - Preparation of derivatives of isocyanic acid (3,065) |
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| 02/28/1989 | CA1250572A1 Reduction of free monomer in isocyanate adducts |
| 02/15/1989 | EP0303150A2 Process for the production of poly-isocyanates containing allophanate groups |
| 12/28/1988 | EP0296686A1 A process for the preparation of carbamates |
| 12/20/1988 | CA1247113A1 Process for the preparation of methyl carbamates |
| 11/29/1988 | US4788329 Preparation of cyclohexyl mono- and diurethanes and isocyanates derived therefrom by addition of methylcarbamate to limonene, process and compositions |
| 11/23/1988 | EP0291819A2 Process for the preparation of isocyanates |
| 11/09/1988 | EP0289840A1 Process for the preparation of (cyclo)aliphatic diisocyanates |
| 10/18/1988 | CA1243332A1 Process for purifying polyisocyanates and the polyisocyanates thus purified |
| 09/28/1988 | EP0283884A1 Process for the preparation of diisocyanates |
| 09/27/1988 | US4774357 Solvent extraction, separation |
| 09/06/1988 | US4769485 Preparation of alkenoyl isocyanates |
| 08/10/1988 | EP0277353A1 Process for the preparation of polyisocyanates containing biuret groups |
| 08/02/1988 | US4761498 Diisocyanates and diisocyanate mixtures based on diphenylmethane, processes for their production and their use as isocyanate component in the production of polyurethane plastics by the isocyanate polyaddition process |
| 07/28/1988 | WO1988005430A1 Process for preparing isocyanate compounds |
| 07/27/1988 | EP0275263A1 Process for preparing methyl isocyanate |
| 07/19/1988 | CA1239415A1 Amino-aminomethylcyclohexanes, useful for the preparation of their corresponding diisocyanates |
| 07/19/1988 | CA1239414A1 Process for the production of polyisocyanates |
| 06/22/1988 | EP0271679A2 Isocyanates derived from dienes and process and their preparation |
| 06/15/1988 | EP0270965A2 Process for the preparation of substituted 3,5-dichloro-2,4-difluorobenzenes |
| 06/15/1988 | EP0270906A1 Diisocyanates and diisocyanate mixtures, process for their preparation and their use in the preparation of polyurethane plastics |
| 06/07/1988 | US4749806 Process for the synthesis of isocyanates and of isocyanate derivatives |
| 05/31/1988 | US4748226 Method of preparation of novel 2-(alkoxymethyl)-pentane-1,5-diisocyanates, 2-(alkoxymethyl)-pentane-1,5-diurethanes, and 2-(alkoxymethyl)-pentane-1,5-dicarbamic acid chlorides and their uses |
| 05/24/1988 | US4746754 Aminotertiarylalkylphenol and phosgene |
| 05/17/1988 | US4745216 Process for the production of polyisocyanates |
| 05/17/1988 | US4745212 Process for the production of isocyanates |
| 05/11/1988 | EP0266661A2 Preparation of cyclohexyl mono- and diurethanes and isocyanates derived therefrom by addition of methylcarbamates to limonene, process and compositions |
| 05/11/1988 | EP0266660A2 Preparation of a novel diisocyanate from norbornadiene |
| 05/04/1988 | EP0265668A1 Process for the preparation of a Diisocyanate |
| 04/20/1988 | EP0263946A1 Method for scavenging acidic impurities from polymeric isocyanates |
| 04/13/1988 | EP0263481A2 Process for the preparation of isocyanates |
| 04/05/1988 | CA1234833A1 Bis-(4-isocyanatophenoxy)-alkanes and a process for the production thereof |
| 04/05/1988 | CA1234832A1 Unsaturated ester isocyanates and a process for the production thereof |
| 04/05/1988 | CA1234826A1 Process for the production of polyisocyanates |
| 04/05/1988 | CA1234825A1 Process for the continuous preparation of organic mono- and/or polyisocyanates |
| 03/30/1988 | EP0261605A1 2-Substituted 1,5-diaminopentanes |
| 03/30/1988 | EP0261604A1 2-(Alkoxymethyl)-pentane-1,5-diisocyanates, -diurethanes and -dicarbamic-acid chlorides, processes for their preparation and their use |
| 03/15/1988 | CA1234137A1 Multi-stage process with adiabatic reactors for the preparation of isocyanates |
| 03/02/1988 | EP0257420A1 Selected diisocyanates,process for their preparation and their use as constituting components in the production of polyurethane plastics |
| 12/23/1987 | DE3620821A1 Aliphatic diisocyanates and their use for the preparation of polyurethane plastics |
| 12/22/1987 | CA1230605A1 Process for the preparation of polymeric tertiary aralkyl isocyanates from 1,3- or 1,4- bis (1-chloro- methylethyl) benzene |
| 11/24/1987 | US4709087 Process for the synthesis of isocyanates and of isocyanate derivatives |
| 11/11/1987 | EP0244727A1 1,4-Bis-(4-isocyanatophenoxy)-benzenes, process for their preparation and their use in the production of polyurethane plastics |
| 11/11/1987 | EP0244620A1 Process for the preparation of isophorone diisocyanate from isophorone dicarbamyl esters using highly selective SnO2 or CuO catalysts |
| 10/21/1987 | EP0242203A1 Beneficial use of water in catalytic conversion of formamides to isocyanates |
| 10/07/1987 | EP0240094A2 Process for preparing isocyanatoalkyl esters |
| 10/06/1987 | US4698438 Oxidative dehydrogenation of monomethylformamide to form methylisocyanate and water in vapor phase; reaction with phenol or oxime |
| 09/30/1987 | CN87102215A Process for preparing methyl isocyanate |
| 09/24/1987 | WO1987005600A1 Process for preparing methyl isocyanate |
| 09/17/1987 | DE3608354A1 1,4-Diisocyanato-4-methylpentane, a process for its preparation, and its use as isocyanate component in the preparation of polyurethane plastics |
| 09/08/1987 | US4692550 Continuous process for thermal splitting of carbamic acid esters |
| 09/02/1987 | EP0234353A1 Process for the production of tetramethyl xylylene diisocyanates |
| 08/25/1987 | CA1225999A1 Multiple-step process for the preparation of hexamethylene diisocyanate-1,6 and/or isomeric aliphatic diisocyanates with six carbon atoms in the alkylene residue |
| 08/25/1987 | CA1225998A1 Preparation of hexamethylene 1,6-diisocyanate and/or isomeric diisocyanates where alkylene is of 6 carbon atoms |
| 08/25/1987 | CA1225997A1 Multiple-step process for the preparation of 3- isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate |
| 08/12/1987 | EP0231509A1 Process for the preparation of blocked polyisocyanates containing carbodiimide groups, and their use in the preparation of wire enamellings |
| 07/28/1987 | US4683329 Beneficial use of water in catalytic conversion of formamides to isocyanates |
| 07/23/1987 | DE3540863C1 Process for preparing hexamethylene diisocyanate |
| 06/30/1987 | US4677221 Process for the production of thermally color stable aliphatic and/or cycloaliphatic diisocyanates and the use thereof for the production of modified polyisocyanates having improved color properties |
| 06/23/1987 | US4675437 Cycloaliphatic triisocyanates |
| 06/23/1987 | CA1223273A1 Hydroxylated polyisocyanates stable prepolymers; process for preparing the same and their use for manufacturing polyurethanes |
| 06/03/1987 | EP0224292A1 Process for the preparation of organic isocyanates |
| 05/20/1987 | EP0222535A1 Cryogenic brine separation of water and isocyanates |
| 05/05/1987 | US4663473 Isocyanates from oxalyl chloride and amines |
| 04/28/1987 | US4661627 Method for scavenging acidic impurities from polymeric isocyanates |
| 04/28/1987 | US4661626 Process for the production of 2-isocyanato-2,3-dehydrocarboxylic acid esters |
| 04/28/1987 | CA1221104A1 Hydroxylated polyisocyanates stable prepolymers and process for preparing the same |
| 03/17/1987 | US4650899 Storage stable mixture of isomers |
| 03/03/1987 | CA1218669A1 Process for preparing alkyl isocyanates |
| 01/27/1987 | CA1217198A1 Cycloaliphatic diisocyanates optionally in the form of isomer mixtures and a process for their production |
| 01/22/1987 | DE3525606A1 Bis(4-isocyanato-3-methylphenoxy)alkanes, a process for their preparation, and their use in the preparation of polyurethane plastics |
| 01/20/1987 | CA1216856A1 Liquid diphenylmethane diisocyanate compositions |
| 01/20/1987 | CA1216853A1 Isocyanate preparation, using an improved catalyst |
| 01/13/1987 | CA1216588A1 Continuous process for thermal splitting of carbamic acid esters |
| 01/07/1987 | EP0207461A2 Process for the preparation of omega-isocyanatoalkyl(meth)acrylates |
| 12/16/1986 | CA1215379A1 Process for the preparation of isocyanates through the thermal cleavage of urethanes |
| 12/03/1986 | EP0203874A1 Process for the stabilisation of organic solutions of polyisocyanates |
| 11/26/1986 | EP0202840A2 Isocyanate compounds and their production |
| 11/18/1986 | CA1214179A1 1-alkyl-2-isocyanatomethyl-isocyanatobenzenes and/or 1-alkyl-4-isocyanatomethyl-isocyanatobenzenes and method for their preparation |
| 11/05/1986 | EP0200506A2 Process for the preparation of methyl carbamates |
| 11/04/1986 | CA1213603A1 Process for producing alkali metal cyanates |
| 10/28/1986 | US4619999 From isocyanic acid and an n-alkoxymethyl group containing compound |
| 10/28/1986 | CA1213285A1 Cycloaliphatic diisocyanates, optionally in the form of isomeric mixtures and a process for their preparation |
| 09/24/1986 | EP0195196A1 Process for the preparation of 2-isocyanato-2,3-dehydrocarbonic acid esters |
| 09/23/1986 | US4613687 Polyisocyanates of the diphenyl methane series |
| 09/23/1986 | US4613466 Preparation of hexamethylene 1,6-diisocyanate and/or isomeric diisocyanates where alkylene is of 6 carbon atoms |
| 09/09/1986 | CA1211122A1 Process for separating technically pure 2,4- diisocyanatotoluene or isomer mixtures having an increased content of 2,4-diisocyanatotoluene from isomer mixtures of 2,4-and 2,6 diisocyanatotoluene |
| 08/06/1986 | EP0189694A1 Process for the preparation of isocyanates and isocyanate derivatives |
| 07/29/1986 | US4603189 Triisocyanates and a process for their preparation |
| 07/29/1986 | US4603016 Cryogenic brine separation of water and isocyanates |
| 07/01/1986 | US4597910 Bis-(4-isocyanatophenoxy)-alkanes and a process for the production thereof |
| 07/01/1986 | US4597909 Process for the production of polyisocyanates |
| 06/24/1986 | US4596679 Multiple-step process for the preparation of 3-isocyanatomethyl-3,5,5-trimethylcyclohexylisocyanate |
| 06/24/1986 | US4596678 Hexamethylenetriamine or alkylenediamines reacted with urea and alcohol to form urethanes, which are vaporized, thermally cleaved |
| 06/17/1986 | US4595744 Low melting point diphenylethane diisocyanate mixtures, method of making the same, and polyurethanes made therefrom |
| 06/11/1986 | EP0183976A1 Process for the preparation of heat-and-colour-fast aliphatic and/or cycloaliphatic diisocyanates and their use in the preparation of colour-improved modified polyisocyanates |
| 06/04/1986 | EP0183115A1 Bis(4-isocyanatophenoxy) alkanes optionally methyl-substituted in position 3, method for their preparation and their use in the preparation of polyurethanes |
| 05/28/1986 | EP0182537A1 Multi-stage process with adiabatic reactors for the preparation of isocyanates |
| 05/06/1986 | US4587058 Diisocyanates of the diphenyl methane series and processes for the production thereof |
| 05/06/1986 | US4587056 Carbonylation, oxidation, catalyst |
| 04/09/1986 | EP0176868A1 Benzoyl ureas having an insecticidal activity |