| Patents for C07C 263 - Preparation of derivatives of isocyanic acid (3,065) |
|---|
| 09/15/1998 | US5808138 Stable polyisocyanate copositions obtainable by phosgene-free methods and their preparation |
| 09/02/1998 | EP0861232A1 Method of producing organic diurethanes and/or polyurethanes and their use in the production of di- and/or polyisocyanates |
| 08/12/1998 | CN1190106A Polyphosphoric acid as stabilizer for polyurethane prepolymers |
| 08/05/1998 | EP0856551A1 Polyphosphoric acid as a stabilizer for polyurethane prepolymers |
| 07/30/1998 | CA2227817A1 Polyphosphoric acid as a stabilizer for polyurethane prepolymers |
| 07/28/1998 | US5786506 Oil solution and dispersants separated by distillation |
| 07/28/1998 | US5786438 Polyurethane-ureas |
| 07/21/1998 | US5783727 Subjecting mixture to crystallization-melting cycle to separate out the 2,6-isomer |
| 07/09/1998 | DE19651215C1 Verfahren zur Trennung von kristallisierbaren Isomerenmischungen organischer Verbindungen A process for separating isomer mixtures of crystallizable organic compounds |
| 06/30/1998 | US5773643 Process for preparation of isocyanate compounds |
| 06/24/1998 | EP0849258A1 Process for the preparation of ethylenically unsaturated isocyanates |
| 06/18/1998 | WO1998025889A1 Suspension crystallization method |
| 06/18/1998 | WO1998025888A1 Process for preparing isocyanates from primary amines which are not readily dissolved |
| 06/18/1998 | WO1998025680A1 Suspension crystallization method |
| 06/10/1998 | EP0846102A1 Polyisocyanate particles of controlled particle size and particle size distribution |
| 06/10/1998 | DE19651041A1 Verfahren zur Herstellung von Isocyanaten aus schwerlöslichen primären Aminen Process for the preparation of isocyanates of sparingly soluble primary amines |
| 06/02/1998 | US5760072 Paclitaxel prodrugs, method for preparation as well as their use in selective chemotherapy |
| 05/28/1998 | WO1998022520A1 Polyisocyanates containing tin and method for preparing polyisocyanate-polyaddition products |
| 05/27/1998 | CN1038503C Preparation process of eylylene diisocyanate |
| 05/20/1998 | DE19647296A1 Zinnhaltige Polyisocyanate und Verfahren zur Herstellung von Polyisocyanat-Polyadditionsprodukten Tin-containing polyisocyanates and methods for the production of polyisocyanate polyaddition products |
| 05/14/1998 | WO1998019993A1 Process for the isomeric separation of isocyanates |
| 05/07/1998 | DE19645659A1 Verfahren zur Isomerentrennung von Isocyanaten Method of separating isomers of isocyanates |
| 05/06/1998 | EP0839847A1 High solids and stable aqueous dispersions of blocked polyisocyanates |
| 04/30/1998 | DE19747441A1 Stable, high solid, solvent free aq. dispersion of blocked poly:isocyanate preparation |
| 04/28/1998 | US5744633 Process for the production of diurethanes and their use for the production of diisocyanates |
| 04/09/1998 | WO1998014425A1 Isocyanate derivatives and their production |
| 04/07/1998 | CA1339804C Process for the preparation of acyl isocyanates |
| 03/31/1998 | US5734076 Useful in the production of polyurethanes with high chemical stability and good thermal stability |
| 03/31/1998 | US5734060 Reacting oxalyl chloride with n-trialkylsilylcarboxamide or n,n-bis(trialkylsilyl)carboxamide |
| 03/25/1998 | EP0830894A1 Mixer-reactor and process to perform reactions, especially phosgenation of primary amines |
| 03/24/1998 | US5731458 Process for thermally cracking carbamic acid esters |
| 03/20/1998 | CA2216040A1 Mixer-reactor and process for carrying out reactions, in particular the phosgenation of primary amines |
| 03/19/1998 | DE19738758A1 Carbonyl di:isocyanate preparation from single starting material without forming explosive gas |
| 03/18/1998 | EP0829500A2 Stabilised blocked isocyanates |
| 03/17/1998 | US5728317 Polyisocyanurates from polyisocyanates with stabilizers |
| 03/05/1998 | DE19635723A1 Catalyst composition giving high conversion and selectivity |
| 02/05/1998 | DE19630904A1 Stabilisation of isocyanate against discoloration over wide temperature range |
| 02/05/1998 | DE19630903A1 Stabilisation of isocyanate against discoloration over wide temperature range |
| 02/04/1998 | CN1172125A Preparation of solutions of one or more isocyanates which contain no apparatus amounts of components which give color, and also the isocyanates themselves |
| 01/15/1998 | DE19627552A1 Improved phosgene-free production of organic polyisocyanate(s) via dissociation of urethane monomer |
| 01/14/1998 | EP0818441A1 Process for performing destillative purification of diurethanes |
| 01/11/1998 | CA2209754A1 Process for the distillative purification of diurethanes |
| 01/07/1998 | EP0816333A1 Process for the preparation of solutions containing one or more isocyanates which do not contain significant proportions of colour-forming components as well as the use of the prepared isocyanates |
| 01/07/1998 | EP0815153A1 Isocyanate compositions, method for using same, use thereof for producing coatings, and resulting coatings |
| 12/26/1997 | CA2209139A1 Preparation of solutions of one or more isocyanates which contain no appreciate amounts of components which give a color, and also the isocyanates themselves |
| 12/24/1997 | CN1168665A Obtaining toluene 2,6-diisocyanate from a mixture containing toluene 2,6-diisocyanate and toluene 2,4-diisocyanate |
| 12/04/1997 | WO1997045399A1 Method for treating polyisocyanate, resulting product, and use of same for the production of oligomers or polymers, and compositions thus obtained. |
| 12/02/1997 | US5693853 Using carbonyl chloride produced from chlorine and contaminated carbon monoxide, wherein the carbonyl chloride is purified |
| 11/13/1997 | DE19618828A1 Use of thermostable solvent in thermal cracking of carbamic ester |
| 11/04/1997 | US5684180 Fractionation and purification of aromatic polyamine mixtures and the use thereof |
| 10/29/1997 | CN1163608A Process for preparing isocyanates |
| 10/22/1997 | CN1162609A Blocked polyisocyanate composition and one-pack thermocuring resin composition comprising the same |
| 10/21/1997 | US5679841 Using a hydrophobic solvent phase and an aqueous phase containing a strong acid and an auxiliary amine; neutralization of aqueous phase |
| 10/21/1997 | US5679840 Mixing with hydrophobic solvent phase containing auxilliary amine and aqueous phase comprising water and strong acid, fractionally distilling, neutralizing |
| 10/21/1997 | US5679839 Reacting a compound with two primary amines on an aromatic nucleus with phosgene |
| 10/15/1997 | EP0801055A1 Mixtures of homologues and isomers of cycloaliphatic diisocyanates and their use in the preparation of polyisocyanate addition products |
| 10/07/1997 | US5675035 Fractionation and purification of aromatic polyamine mixtures and the use thereof |
| 10/07/1997 | CA2094484C Multistep, continuous preparation of organic polyisocyanates |
| 10/01/1997 | CN1035999C Process for the production of methylene-crosslinked polyphenylene polyisocyanate |
| 09/30/1997 | US5672737 Fractionation and purification of mixtures of aromatic polyamines and use thereof |
| 09/17/1997 | EP0795544A1 Process for the thermal decomposition of carbamic esters |
| 09/17/1997 | EP0795543A1 Use of high boiling solvents or solvent mixtures as heat exchange medium in the thermal decomposition of carbamic esters |
| 09/15/1997 | CA2199919A1 Process for thermally cracking carbamic acid esters |
| 09/04/1997 | WO1997031960A1 Isocyanate compositions, method for using same, use thereof for producing coatings, and resulting coatings |
| 09/04/1997 | CA2247182A1 Isocyanate compositions, method for using same, use thereof for producing coatings, and resulting coatings |
| 09/03/1997 | EP0792263A1 Process for preparing isocyanates |
| 09/02/1997 | US5663424 Fractionation and purification of aromatic polyamine mixtures and the use thereof |
| 09/02/1997 | US5663423 Method for handling (2-alkyl) (acryloyl) isocyanate, method for stabilizing (2-alkyl) (acryloyl) isocyanate, method for producing (2-alkyl) (acryloyl) isocyanate, heterocyclic compound, and method for producing heterocyclic compound |
| 08/27/1997 | EP0680466B1 Process for preparing isocyanates |
| 07/23/1997 | CN1155275A 4,4'-methylen-bis-(3-chloro-2,6-dialkylphenlisocyanates) and polyurethane thereof |
| 07/17/1997 | WO1997025308A1 Fluorocarbon-containing isocyanate derivatives and soil-resist agents |
| 07/15/1997 | US5648520 Fractionation and purification of aromatic polyamine and the use thereof |
| 07/15/1997 | US5648519 Fractionation and purification of aromatic polyamine mixtures and the use thereof |
| 07/10/1997 | WO1997024320A1 Production of isocyanate using chlorine recycle |
| 07/08/1997 | US5645763 Use of liquid esters as solvents for isocyanates |
| 07/02/1997 | EP0781778A1 Novel paclitaxel prodrugs, method for preparation as well as their use in selective chemotherapy |
| 06/11/1997 | EP0777647A1 4,4'-methylen-bis-(3-chloro-2,6-dialkylphenylisocyanates) and polyurethane systems containing the same |
| 05/28/1997 | DE19543862A1 Hexa:methylene di:isocyanate preparation from technical raw material |
| 05/27/1997 | US5633396 Process for preparing triisocyanates |
| 05/15/1997 | WO1997017323A1 Method of producing organic diurethanes and/or polyurethanes and their use in the production of di- and/or polyisocyanates |
| 05/15/1997 | DE19541384A1 Verfahren zur Herstellung von organischen Diurethanen und/oder Polyurethanen und ihre Verwendung zur Herstellung von Di- und/oder Polyisocyanaten A process for the preparation of organic diurethanes and / or polyurethanes and to their use for the production of di- and / or polyisocyanates, |
| 05/15/1997 | CA2235328A1 Preparation of organic diurethanes and/or polyurethanes and their use for preparing diisocyanates and/or polyisocyanates |
| 05/14/1997 | CN1149579A Process for toluene diisocyanate and specific mixture of tolylene diamine and water and use in preparing toluene diisocyanate |
| 04/23/1997 | CN1148056A Prepn. of mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates having reduced iodine color number and reduced chlorine content |
| 04/09/1997 | EP0767166A1 Process for the preparation of acyl isocyanates |
| 04/01/1997 | US5616784 Thermal cleavage of carbamic esters |
| 03/26/1997 | EP0764633A2 Process for the preparation of etherisocyanates |
| 03/26/1997 | CA2186085A1 Process for the production of ether isocyanates |
| 03/11/1997 | US5610408 Carbodiimidation, phospholine catalyst, phosphite |
| 03/11/1997 | US5609735 Process and a device for separating a solid residue from its solution in a stirred bed of material |
| 03/11/1997 | CA1338986C Process for the production of monoblocked diisocyanates |
| 03/04/1997 | US5607977 Benzoylureas |
| 02/27/1997 | WO1997007092A1 Polyisocyanate particles of controlled particle size and particle size distribution |
| 02/27/1997 | CA2227771A1 Polyisocyanate particles of controlled particle size and particle size distribution |
| 02/26/1997 | CN1143952A Process for preparing isocyanates |
| 02/05/1997 | EP0757034A1 Process for the preparation of toluylenediisocyanate, special mixtures from toluylenediamine and water and their use for the preparation of toluylenediisocyanate |
| 02/05/1997 | CA2182654A1 Process for the preparation of toluylene diisocyanate, specific mixtures of toluylene diamine and water, and the use of mixtures to prepare toluylene diisocyanate |
| 02/04/1997 | US5599968 Continuous process for the preparation of organic isocyanates |
| 01/23/1997 | DE19526081A1 Sterically hindered isocyanate prodn. useful esp. for high yield |
| 01/08/1997 | EP0751931A1 Obtaining toluene 2,6-diisocyanate from a mixture containing toluene 2,6-diisocyanate and toluene 2,4-diisocyanate |