| Patents for C07C 263 - Preparation of derivatives of isocyanic acid (3,065) |
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| 02/01/2006 | CN1729167A Method for the production of isocyanates |
| 02/01/2006 | CN1729166A Method for separating isocyanates out from a reaction mixture |
| 02/01/2006 | CN1729165A Method for the purification of isocyanates |
| 02/01/2006 | CN1239475C Process for the purification of mixtures of toluenediisocyanate |
| 02/01/2006 | CN1239474C Process for preparing urea-dione polyisocyanate with improved monomer stability |
| 01/31/2006 | US6992214 Integrated process for the preparation of aromatic isocyanates and procedures for effecting the relative intermediate phases |
| 01/31/2006 | CA2186991C Process for the preparation of acyl isocyanates |
| 01/28/2006 | CA2514375A1 Multistage continuous preparation of cycloaliphatic diisocyanates |
| 01/19/2006 | US20060011463 reacting toluenediamine with phosgene in presence of an inert solvent ( chlorobenzene, dichlorobenzene, toluene) to form toluene diisocyanate, separating the solvent in two-stage distillation, in first appatus then using heat of condensation to evaporate remaining solvent in second apparatus |
| 01/19/2006 | DE102004030164A1 Verfahren zur Herstellung von Isocyanaten A process for the preparation of isocyanates |
| 01/18/2006 | EP1616890A1 Method for producing of polyamines of the diphenylmethane series with low degree of protonation |
| 01/18/2006 | EP1616857A1 Method for producing polyisocyanates by adiabatic phosgenation of primary amines |
| 01/18/2006 | CN1721060A Ultrafine oxide catalyst for preparing diphenylmethane diisocyanates by decomposition of diphenylmethane dicarbamic acid ester |
| 01/11/2006 | CN1718570A Method for producing polyisocyanates by adiabatic phosgenation of primary amines |
| 01/11/2006 | CN1235874C Chemical synthesis method of aryl isocyanate |
| 01/11/2006 | CN1235873C Chemical synthesis method of isopropyl isocyanate |
| 12/29/2005 | WO2005123665A1 Method for producing isocyanates |
| 12/22/2005 | US20050282993 process includes neutralizing acidic impurities in organic isocyanate comprising 90 to 100% by weight of diphenylmethane diisocyanate, partially carbodiimidizing isocyanate groups of neutralized organic isocyanate, and terminating carbodiimidization reaction; stability; requires less catalyst stopper |
| 12/21/2005 | EP1607425A1 Process for the production of carboiimide modified organic isocyanates |
| 12/21/2005 | CN1709863A Improved process for the production of carbodiimide modifiedorganic isocyanates |
| 12/21/2005 | CN1232499C Production of low color diphenyl methane polyisocyanate |
| 12/17/2005 | CA2509861A1 Improved process for the production of carbodiimide modified organic isocyanates |
| 12/15/2005 | DE102004026451A1 Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten Multistage process for continuously preparing cycloaliphatic diisocyanates |
| 12/15/2005 | DE102004026095A1 Verfahren zur Herstellung von Isocyanaten A process for the preparation of isocyanates |
| 12/15/2005 | DE102004022626A1 Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten Multistage process for continuously preparing cycloaliphatic diisocyanates |
| 12/14/2005 | CN1708452A Method for producing chlorine from hydrochloric acid |
| 12/13/2005 | US6974880 Heating phosgene and vaporous diamine separately and feeding into tube reactor thru nozzles to produce corresponding diisocyanate |
| 12/08/2005 | WO2005115974A1 Isocyanate production method |
| 12/08/2005 | US20050272910 Moderate-pressure gas phase phosgenation |
| 12/07/2005 | EP1602643A1 Multi-step process for the continuous preparation of cycloaliphatic diisocyanates |
| 12/07/2005 | EP1601456A1 Method for producing polyisocyanates |
| 12/01/2005 | WO2005092842A8 Method for producing (meth)acrylate derivative having isocyanate group |
| 12/01/2005 | US20050267310 Multistage continuous preparation of cycloaliphatic diisocyanates |
| 11/30/2005 | CN1229177C Distillation or reaction distillation comprising at least one toxic constituent |
| 11/29/2005 | CA2508471A1 Multistage continuous preparation of cycloaliphatic diisocyanates |
| 11/23/2005 | CN1228316C Chemical synthesis of p-methoxyphenyl isocyanate |
| 11/10/2005 | US20050250960 Phosgene-free; reacting a cycloaliphatic diamine with a carbonic acid derivative and an alcohol to produce a cycloaliphatic diurethane, distillation, thermally cleaving the cycloaliphatic diurethane to produce a cycloaliphatic diisocyanate, recycling reurethanization product directly into the low-boiler |
| 11/09/2005 | EP1593669A1 Multi-step process for the continuous preparation of cycloaliphatic diisocyanates |
| 11/07/2005 | CA2506401A1 Multistage continuous preparation of cycloaliphatic diisocyanates |
| 10/27/2005 | US20050240054 Production of di- and polyisocyanates of the diphenylmethane series with defined acidity |
| 10/26/2005 | EP1587785A1 Method for the production of isocyanates |
| 10/25/2005 | CA2242177C Fluorocarbon-containing isocyanate derivatives and soil-resist agents |
| 10/19/2005 | CN1684942A Reprocessing of reaction material discharged from phosgenation reactors |
| 10/12/2005 | CN1680299A Production of di- and polyisocyanates of the diphenylmethane series with defined acidity |
| 10/06/2005 | WO2005092842A1 Method for producing (meth)acrylate derivative having isocyanate group |
| 10/06/2005 | US20050222453 Method for producing isocyanates |
| 10/06/2005 | US20050222291 While reducing amounts of components such as 2,2'-MDI, solvent residues and phenyl isocyanates to level such that these no longer interfere in production of polyurethanes; reacting aniline and formaldehyde in presence of acid catalyst to form diamines and polyamines, phosgenating 2-nuclear diamines |
| 10/05/2005 | EP1259480B1 Process for the preparation of organic polyisocyanates |
| 09/28/2005 | CN1675175A Moderate-pressure gas phase phosgenation |
| 09/28/2005 | CN1675174A Integrated method for producing isocyanates |
| 09/21/2005 | EP1575908A1 Method for separating out solvent from a reaction mixture resulting from an isocyanate synthesis and for purifying this solvent |
| 09/21/2005 | EP1575907A1 Method for the purification of isocyanates |
| 09/21/2005 | EP1575906A1 Separation of a substance mixture consisting of hydrogen chloride and phosgene |
| 09/21/2005 | EP1575905A1 Method for separating isocyanates out from a reaction mixture |
| 09/21/2005 | EP1575904A1 Method for the continuous production of isocyanates |
| 09/15/2005 | WO2005085186A1 Method for producing isocyanate compound |
| 09/15/2005 | US20050203311 Heat exchanger plates through which a heat transfer medium flows and have a geometry defined by the ratio of the degassing area to the volume and arrangement of the heating surfaces which makes it possible for the cleavage to be carried out in a two-phase mixture |
| 09/14/2005 | CN1666979A Process for producing bromo chloro isocyanuric acid and its use |
| 09/14/2005 | CN1218934C Method for producing isocyanates |
| 08/31/2005 | CN1660793A Process for the preparation of highly pure 2, 4'-methylenediphenyldiisocyanate |
| 08/31/2005 | CN1216681C Method and device for continuous production of organic mono of polyisocyanates |
| 08/25/2005 | DE102004005320A1 Herstellung von Di- und Polysocyanaten der Diphenylmethanreihe mit definierter Acidität Preparation of di- and Polysocyanaten of the diphenylmethane series having a defined acidity |
| 08/25/2005 | DE102004005319A1 Verfahren zur Herstellung von hochreinem 2,4'-Methylendiphenyldiisocyanat A process for the preparation of highly pure 2,4'-methylenediphenyl |
| 08/17/2005 | CN1656062A Method for producing isocyanates |
| 08/17/2005 | CN1214861C Zirconium oxide catalyst for synthesizing cyclohexyl menthyl formate, and preparing method and use thereof |
| 08/16/2005 | US6930199 preparation of isocyanates in the gas phase in which the possibilities for back-mixing and byproduct formation are reduced by improving the mixing of the starting materials in a tubular reactor |
| 08/10/2005 | EP1561746A2 Process for the preparation of highly pure 2,4'-methylenediphenyldiisocyanate |
| 08/10/2005 | EP1561745A2 Process for the preparation of di- and polyisocyanates of the diphenylmethane series with defined acidity |
| 08/10/2005 | CN1653041A Tetralin isocyanates |
| 08/10/2005 | CN1651406A Process for the preparation of diisocyanates |
| 08/03/2005 | EP1558521A2 Method for producing chlorine from hydrochloric acid |
| 08/03/2005 | EP1476234B1 Reaction column in a special combination with a circulation evaporator |
| 08/02/2005 | US6924385 Method for synthesis of aliphatic isocyanates from aromatic isocyanates |
| 07/27/2005 | CN1212312C Synthesis method of 1,5-naphthalene diisocyanate |
| 07/21/2005 | US20050159585 Forming acyl azide function on acid group of amino acid derivative, then transforming to isocyanate |
| 07/21/2005 | US20050159584 O-succinimidyl-2-[(9H-fluoren-9-ylmethoxy)carbonylamino]-ethylcarbamate's used as monomers active in the synthesis of di- and tri-substituted ureas and urea oligomers |
| 07/21/2005 | US20050159495 Toluene diisocyanate tar fluidizer and method of use |
| 07/21/2005 | DE10359627A1 Verfahren zur Herstellung von Diisocyanaten A process for the preparation of diisocyanates |
| 07/20/2005 | EP1555258A1 Preparation of di- and/or triisocyanates |
| 07/20/2005 | EP1160239B1 Isocyanate production procedure |
| 07/20/2005 | CN1642901A Process for the production of diaminodiphenylmethane and its higher homologues |
| 07/14/2005 | US20050154227 Method for producing isocyanates |
| 07/14/2005 | US20050154175 Isocyanate-based compositions, their process for utilization, their utilization for producing coatings and coatings thus obtained |
| 07/13/2005 | CN1636972A Process for the preparation of isocyanates in the gas phase |
| 07/13/2005 | CN1636966A Process for the preparation of diamines and polyamines of the diphenylmethane series |
| 07/12/2005 | US6916953 Integrated process for preparing isocyanates |
| 07/07/2005 | WO2005061445A1 Methods for carbon isotope labeling synthesis by rhodium-promoted carbonylation via isocyanate using azides and carbon-isotope monoxide |
| 06/29/2005 | EP1546091A1 Reprocessing of reaction material discharged from phosgenation reactors |
| 06/23/2005 | US20050137417 preparation of isocyanates in the gas phase in which the possibilities for back-mixing and byproduct formation are reduced by improving the mixing of the starting materials in a tubular reactor |
| 06/21/2005 | CA2202021C Mixtures of cycloaliphatic diisocyanates, a process for their preparation and their use for the production of polyisocyanate addition products |
| 06/15/2005 | CN1626509A Organic multiple isocyanate compsn. |
| 06/08/2005 | EP1538143A1 Lysin ester triisocyanate and method for production thereof |
| 06/02/2005 | DE10350816A1 Production of a low monomer-content, low viscosity mixture containing polymethylene polyphenylene polyisocyanates for polyurethane foam production comprises distillative separation |
| 06/02/2005 | DE10348380A1 Mit sekundären Aminen blockierte Polyisocyanate mit Biuretstruktur Secondary amines were blocked polyisocyanates with biuret |
| 05/31/2005 | US6900348 Reacting pure phospgene with amine |
| 05/26/2005 | US20050113601 Process for preparing isocyanates in the gas phase |
| 05/26/2005 | US20050113557 Reacting nitrobenzene and methanol to form aniline and formaldehyde in presence of catalyst, then converting aniline and formaldehyde to diamine or polyamine in the presence of an hydrochloric acid catalyst; for production of di-/poly- isocyanates via phosgenation |
| 05/25/2005 | EP1532107A1 Moderate-pressure gas phase phosgenation |
| 05/25/2005 | DE10349504A1 Verfahren zur Herstellung von Isocyanaten in der Gasphase A process for the preparation of isocyanates in the gas phase |
| 05/25/2005 | CN1620329A Reactive tower special combined with natural circulation evaporator |