| Patents for C07C 263 - Preparation of derivatives of isocyanic acid (3,065) |
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| 05/24/2005 | US6896401 Mixing reactant streams to produce a product stream using a mixing configuration having a number of reactant feed points, an excess component stream of one reactant is divided into two reactant substreams and fed into the suction region of mixing |
| 05/19/2005 | US20050107565 Polyisocyanates with biuret structure, blocked with secondary amines |
| 05/18/2005 | CN1616418A Polyisocyanates with biuret structure, blocked with secondary amines |
| 05/18/2005 | CN1202152C Process for the continous production of polyisocyanates |
| 05/17/2005 | CA2335068C Method for treating distillation residues from the synthesis of toluene diisocyanate |
| 05/12/2005 | US20050101801 Process for the production of diaminodiphenylmethane and its higher homologues |
| 05/11/2005 | EP1529033A1 Integrated method for producing isocyanates |
| 05/04/2005 | EP0815153B1 Isocyanate compositions, method for using same, use thereof for producing coatings, and resulting coatings |
| 05/04/2005 | CN1611488A Novel polyisocyanate compound, method for producing the same, and uses thereof |
| 04/27/2005 | EP1526129A1 Process for the preparation of isocyanates in the gas phase |
| 04/27/2005 | CN1610711A Method for producing MDI, especially 2, 4'-MDI |
| 04/27/2005 | CN1609597A Method and device for determining the isomer composition in isocyanate production processes |
| 04/20/2005 | EP1524284A2 Polyisocyanates with biuretstructure blocked with secondary amines |
| 04/20/2005 | EP1524281A2 Isocyanate containing compositions, process for their use, process for preparing coatings, and coatings |
| 04/20/2005 | EP1524260A1 Process for the preparation of di- and polyamines of the diphenyl methane series |
| 04/20/2005 | CN1197643C Method for reducing byproducts in the mixture of reactant stream |
| 04/17/2005 | CA2485156A1 Polyisocyanates with biuret structure, blocked with secondary amines |
| 03/31/2005 | US20050070734 Production of isocyanates in the gaseous phase |
| 03/30/2005 | EP1518874A1 Polymeric MDI having low monomer content |
| 03/30/2005 | CN1194962C Method and apparatus for continuously preparing tolylene diisocyanate |
| 03/29/2005 | CA2178750C Process for preparing isocyanates |
| 03/24/2005 | DE102004041344A1 Neuartige Polyisocyanatverbindung, Verfahren zur Herstellung derselben und Verwendungen davon Novel polyisocyanate compound, processes for making them and uses thereof |
| 03/23/2005 | CN1597103A Catalyst for synthesizing cyclohexyl amino methyl formate |
| 03/17/2005 | DE10338511A1 Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten Multistage process for continuously preparing cycloaliphatic diisocyanates |
| 03/17/2005 | DE10338509A1 Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten Multistage process for continuously preparing cycloaliphatic diisocyanates |
| 03/17/2005 | DE10338508A1 Mehrstufiges Verfahren zur kontinuierlichen Herstellung von cycloaliphatischen Diisocyanaten Multistage process for continuously preparing cycloaliphatic diisocyanates |
| 03/15/2005 | US6867324 Phosgenation of amines where the reaction product is removed in a closed loop and the starting material streams come into contact with one another according to the countercurrent principle. |
| 03/09/2005 | EP1512682A1 Multi-step process for the continuous preparation of cycloaliphatic diisocyanates |
| 03/09/2005 | EP1512681A1 Multi-step process for the continuous preparation of cycloaliphatic diisocyanates |
| 03/09/2005 | EP1512680A1 Multi-step process for the continuous preparation of cycloaliphatic diisocyanates |
| 03/09/2005 | CN1592736A Production of isocyanates in the gaseous phase |
| 03/09/2005 | CN1590370A Production of mixtures of diisocyanates and polyisocyanates from the diphenylmethane series |
| 03/09/2005 | CN1590369A Preparation method of isocyanate |
| 03/03/2005 | WO2004014845A8 Integrated method for producing isocyanates |
| 03/03/2005 | US20050049430 Diisocyanate of bicyclo[2.2.1]heptane, tricyclo[5.2.1.02,6]decane, bicyclo[4.3.0]nonane-3(4),7(8)-, bicyclo[2.2.2]octane; polyurethane resin with transparency, heat resistance, Abbe number and refractive index; lens |
| 03/02/2005 | EP1509496A1 Method for producing isocyanates |
| 02/24/2005 | US20050043563 Multistage continuous preparation of cycloaliphatic diisocyanates |
| 02/24/2005 | US20050043562 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 |
| 02/24/2005 | US20050043561 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 |
| 02/24/2005 | DE10333929A1 Herstellung von Mischungen von Di- und Polyisocyanaten der Diphenylmethanreihe mit hohen Gehalten an 4,4'-Methylendiphenyldiisocyanat und 2,4'-Methylendiphenyldiisocyanat Preparation of mixtures of di- and polyisocyanates of the diphenylmethane series with high contents of 4,4'-methylene diphenyl diisocyanate and 2,4'-methylene diphenyl diisocyanate |
| 02/22/2005 | CA2478743A1 Multistage continuous preparation of (cyclo) aliphatic diisocyanates |
| 02/22/2005 | CA2478723A1 Multistage continuous preparation of (cyclo)aliphatic diisocyanates |
| 02/22/2005 | CA2478300A1 Multistage continuous preparation of (cyclo) aliphatic diisocyanates |
| 02/16/2005 | EP1506957A1 Process for the preparation of mixtures of di- and polyisocyanates of the diphenylmethane series with a high amount of 4,4'-methylenediphenyldiisocyanate and 2,4'-methylenediphenyldiisocyanate |
| 02/16/2005 | EP1506165A1 Tetralin isocyanates |
| 02/10/2005 | WO2005012237A1 Process for preparing high purity (meth)acryloyloxyalkyl isocyanate |
| 02/10/2005 | WO2005012236A1 Stabilized (meth)acryloyloxyalkyl isocyanate, a process for stabilization thereof and a process for preparation of the same |
| 02/02/2005 | CN1575278A Method for producing isocyanates |
| 02/02/2005 | CN1575277A Method for production of isocyanates |
| 02/02/2005 | CN1575276A Method for producing isocyanates |
| 01/27/2005 | US20050020848 Reaction column in a special combination with a natural circulation evaporator |
| 01/27/2005 | US20050020797 Production of mixtures of diisocyanates and polyisocyanates from the diphenylmethane series with high contents of 4,4'-methylenediphenyl diisocyanate and 2,4'-methylenediphenyl diisocyanate |
| 01/26/2005 | CN1186317C Process for the preparation of organic polyisocyanates |
| 01/20/2005 | US20050014975 Reacting aniline with formaldehyde in presence of acid catalyst; heating controlling temperature; phosphonation if desired |
| 01/19/2005 | EP1497259A1 Reactor for thermally cracking monofunctional and polyfunctional carbamates |
| 01/12/2005 | CN1562965A New technique for preparing 5-isocyanic ester-isophtyaloyl chlorine |
| 01/11/2005 | US6841585 Tetralin isocyanates |
| 01/06/2005 | US20050003553 Evaluating spectrum via chemometric calibration model; online networks |
| 01/06/2005 | US20050002835 Micro-engineered reactor |
| 01/05/2005 | CN1560030A Polyisocyanate with good water dispersiveness |
| 01/04/2005 | US6838578 Separately heating phosgene and a diamine or triamine of the formula R-(NH2)n, where R= a (cyclo)aliphatic hydrocarobn having upto 15 carbon atoms, and atleast 2 C-atoms between two nitrogen atoms, continuously reacting the reactants |
| 12/30/2004 | US20040267047 Method for production of isocyanates |
| 12/30/2004 | DE10327009A1 Mischungen enthaltend Isocyanat und Stabilisator Mixtures containing isocyanate and stabilizer |
| 12/29/2004 | CN1182108C Light isocyanates, method for producing them and use thereof |
| 12/23/2004 | WO2004111119A1 Mixtures containing isocyanate and stabilisers of the hindered phenol type with a high molecular weight |
| 12/23/2004 | US20040260117 Phosgenation of a primary amine in the presence of a nontoxic phosphine oxide catalyst; continuous or batch processing; by-product inhibition; high efficiency under mild temperature and pressure conditions |
| 12/22/2004 | EP1487777A1 Process for the production of diaminodiphenylmethane and its higher homologues |
| 12/21/2004 | US6833476 Fluorinating a dichlorofluoromethyl or methoxy or a trichloromethyl or methoxybenzene isocyanate by reacting with HF to form the carbamoyl fluoride intermediate and forming a trifluoromethyl or methoxybenzene isocyanate |
| 12/21/2004 | US6833469 Method for producing isocynates |
| 12/14/2004 | US6831192 Reacting formaldehyde with aniline in presenc eof acid catalyst |
| 12/09/2004 | US20040249193 Method for producing isocyanates |
| 12/09/2004 | DE10322439A1 Verfahren und Vorrichtung zur Bestimmung der Isomerenzusammensetzung bei Isocyanat-Herstellprozessen Method and apparatus for determination of the isomer composition in isocyanate production processes |
| 12/09/2004 | DE102004001872A1 Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane A process for distillation of a mixture of isomeric diisocyanatodiphenylmethanes |
| 12/08/2004 | EP1483235A1 Process for the preparation of isocyanates |
| 12/01/2004 | CN1550493A Process for the distillation of a mixture of isomeric diisocyanatodiphenylmethanes |
| 11/25/2004 | US20040236139 divided wall chemical reactor; multistage process |
| 11/24/2004 | EP1480033A1 Method and apparatus for determining the content of isomeres during production of isocyanate |
| 11/19/2004 | CA2467281A1 Method and device for determining the isomer composition in isocyanate production processes |
| 11/17/2004 | EP1476324A1 Dump body for heavy vehicles |
| 11/17/2004 | EP1476234A2 Reaction column in a special combination with a natural circulation evaporator |
| 11/11/2004 | WO2004080587A8 Method for producing polyisocyanates |
| 11/10/2004 | EP1475367A1 Distillation process for separating diisocyanatodiphenylmethane isomers |
| 11/08/2004 | CA2466464A1 Process for the distillation of a mixture of isomeric diisocyanatodiphenylmethanes |
| 10/20/2004 | CN1171862C Sythetic method for closed isocyanate containing alpha-olefinic bond |
| 10/12/2004 | US6803483 Process for the purification of mixtures of toluenediisocyanate |
| 10/12/2004 | US6803482 Uniform heating, controlling temperature; homogeneity gas flow; antideposit agents; phosgenating of diamine or triamine |
| 10/05/2004 | US6800781 Injecting quenching liquid into gas mixture continuously flowing out of cylindrical reaction zone into downstream cylindrical quenching zone, with at least two spray nozzles arranged at entrance to quenching zone at equal distances |
| 09/30/2004 | US20040192959 Method for producing isocynates |
| 09/30/2004 | DE10311865A1 Production of polyurethane components e.g. diphenylmethane di-isocyanate, involves making intermediates from simple starting materials and then reacting the intermediates, all in a system of micro-technology components |
| 09/29/2004 | CN1532189A Process for preparing polyisocyanate ester |
| 09/23/2004 | WO2004080587A1 Method for producing polyisocyanates |
| 09/23/2004 | DE10310888A1 Production of polyisocyanates useful for polyurethane production comprises reacting an amine with phosgene in a tubular reactor and passing the reactor effluent to a distillation column |
| 09/22/2004 | CN1530361A Preparation of (poly) isocyanic ester in gas phase |
| 09/21/2004 | CA2047989C Multilayer reverse osmosis membrane of polyamide-urea |
| 09/14/2004 | CA2085495C Isoxyanatocarboxylic acids, a process for their preparation and their use in coating compositions as cross-linking agents |
| 09/08/2004 | CN1165520C Method for treating distillation residues from synthesis of toluene diisocyanate |
| 09/02/2004 | US20040171869 Method for producing mdi, especially 2,4'-mdi |
| 09/02/2004 | DE10307141A1 Verfahren zur Herstellung von (Poly)isocyanaten in der Gasphase A process for the preparation of (poly) isocyanates in the gas phase |
| 09/01/2004 | EP1451150A1 Production of isocyanates in the gaseous phase |
| 08/26/2004 | US20040167354 Process for the manufacture of (poly-)isocyanates in the gas phase |