| Patents for C07C 263 - Preparation of derivatives of isocyanic acid (3,065) |
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| 04/08/1986 | US4581174 Phosgenation of organic amines |
| 03/26/1986 | EP0175117A2 Process for recovering pure diisocyanates |
| 03/25/1986 | CA1202316A1 Preparation of tertiary alkyl isocyanates |
| 03/18/1986 | CA1202036A1 Preparation of tertiary alkyl isocyanates |
| 02/25/1986 | US4572804 Preparation of unsaturated isocyanates |
| 01/08/1986 | EP0166831A1 Improved catalyst |
| 01/07/1986 | CA1199033A2 Agricultural sulfonamides |
| 12/18/1985 | EP0164521A1 Process for the preparation of polymeric tertiary aralkyl isocyanates from 1,3- or 1,4-bis(1-chloro-1-methylethyl)benzene |
| 12/18/1985 | EP0164491A1 Process for the preparation of tertiary aralkyl urethanes and process for the preparation of isocyanates derived therefrom |
| 12/11/1985 | EP0163837A1 Process for the preparation of polyisocyanates |
| 11/27/1985 | EP0162347A1 Cycloaliphatic triisocyanates, process for their production, and their use in the manufacture of polyurethanes |
| 11/27/1985 | EP0162346A1 Triisocyanates, process for their production, and their use in the manufacture of polyurethanes |
| 11/21/1985 | EP0161550A1 Process for producing an aliphatic isocyanate |
| 10/29/1985 | US4549991 To give isocyanates |
| 10/16/1985 | EP0158059A1 Process for the preparation of polyamines and their use in the preparation of polyisocyanates |
| 10/15/1985 | US4547322 Method for manufacture of diphenylmethane diisocyanates |
| 09/17/1985 | CA1193493A1 Process for the production of stabilized polyisocyanates, the polyisocyanates so-stabilized and their use in the production of polyurethanes |
| 08/27/1985 | US4537726 Multi-stage process with adiabatic reactors for the preparation of isocyanates |
| 08/07/1985 | EP0150435A2 Procedure for continuous manufacturing of organic mono- and/or polyisocyanates |
| 07/24/1985 | EP0149388A1 Isocyanate composition having a low melting point with a diphenyl ethane structure, process for the preparation thereof; use for the fabrication of polyurethanes |
| 07/23/1985 | US4530796 Process for the preparation of isocyanates through the thermal cleavage of urethanes |
| 07/16/1985 | CA1190555A1 Manufacture of isocyanates |
| 07/09/1985 | CA1190239A1 Manufacture of diisocyanates |
| 06/05/1985 | EP0143613A2 Production of isocyanate compounds |
| 06/05/1985 | EP0143501A2 Process for preparing organic isocyanates |
| 06/05/1985 | EP0143320A2 Method for the preparation of isocyanates by thermal decomposition of urethanes |
| 05/15/1985 | EP0141295A1 Unsaturated ester isocyanates, process for their preparation and their utilization in the production of olefinically unsaturated oligourethanes |
| 04/30/1985 | US4514339 Process for preparing alkyl isocyanates |
| 04/23/1985 | US4512929 1-Alkyl-2-isocyanatomethyl-isocyanatobenzenes and/or 1-alkyl-4-isocyanatomethyl-isocyanatobenzenes |
| 03/26/1985 | US4507464 Polyisocyanates prepared by phosgenating a polyamine in the presence of a compound containing at least one hydroxyl group |
| 03/19/1985 | US4505860 Crosslinking, polyurethanes |
| 03/19/1985 | CA1184190A1 Modified untreated toluene diisocyanate, useful in the preparation of novel high resilience polyurethane foam |
| 02/27/1985 | EP0133538A2 Process for the purification of polyisocyanates |
| 02/26/1985 | CA1183145A1 Continuous process for the production of organic isocyanates |
| 02/13/1985 | EP0132734A2 Neopentyl isocyanates and their preparation |
| 02/12/1985 | US4499023 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 |
| 01/29/1985 | CA1181758A1 Process for the preparation of isocyanates and/or derivatives thereof |
| 01/22/1985 | US4495107 Process for producing alkali metal cyanates |
| 01/01/1985 | US4491670 Group 8 metal carbonyl catalyst |
| 12/19/1984 | EP0128382A1 1-Alkyl-2-isocyanatomethyl-isocyanato-cyclohexanes and/or 1-alkyl-4-isocyanato-methyl-isocyanato-cyclohexanes and the like diamines, processes for their preparation, and use |
| 12/11/1984 | US4487713 Heat treatment with titanium, tin, antimony or zirconium compound |
| 12/04/1984 | US4486603 Stereospecific, from cyclohexane-1,4-dicarboxylic acid or ester |
| 12/04/1984 | CA1178968A1 Process for the preparation of polyisocyanates |
| 11/28/1984 | EP0126300A1 Multi-step process for the production of 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanates |
| 11/28/1984 | EP0126299A1 Multi-step process for the preparation of 1,6-hexamethylenediisocyanate and for isomeric aliphatic diisocyanates |
| 11/21/1984 | EP0125726A1 Improved process for preparing alkyl isocyanates |
| 11/21/1984 | EP0125591A1 Trialkyl-substituted aromatic diisocyanates |
| 11/20/1984 | US4483974 Process for the production of stabilized polyisocyanates, the polyisocyanates so-stabilized and their use in the production of polyurethanes |
| 11/20/1984 | CA1178291A1 Process for the continuous thermal cleavage of carbamic acid esters and preparation of isocyanates from the products thereof |
| 11/14/1984 | EP0125169A1 Liquid composition containing diisocyanates with a diphenyl methane structure, and process for its preparation |
| 11/13/1984 | US4482499 Process for the preparation of isocyanates by thermal cleaving of urethanes |
| 10/31/1984 | EP0123412A1 Method for manufacture of diphenylmethane diisocyanates |
| 10/23/1984 | US4478757 Process for the manufacture of aromatic isocyanates |
| 10/23/1984 | CA1176647A1 Production of isocyanates from esters of aromatic carbamic acids (urethanes) |
| 10/17/1984 | EP0122031A1 Process for producing alkali metal cyanates |
| 10/16/1984 | US4477389 Polyhalogenated phenyl isocyanate synthesis with excess phosgene and either triethylamine or tetramethylurea |
| 10/03/1984 | EP0120254A1 Process for the preparation of polyisocyanates, polyisocyanates obtained by this process and their use in the preparation of polyurethanes or polyamines |
| 10/03/1984 | EP0120193A1 Aliphatic isocyanate compounds |
| 09/04/1984 | US4469640 Catalytic conversion of formamides to isocyanates |
| 08/21/1984 | US4467114 Preparation of trans cyclohexane 1,4-diurea |
| 08/15/1984 | EP0115660A1 Process for the preparation of isocyanates |
| 08/14/1984 | US4465639 Process for polyisocyanates |
| 08/08/1984 | EP0114970A2 Improved process for the preparation of polymethylene polyphenyl polyisocyanates |
| 07/17/1984 | CA1171097A1 Polyisocyanates of the diphenyl methane series and process for the production thereof |
| 07/10/1984 | US4459236 Preparation of 1-alkenyl isocyanates |
| 07/03/1984 | US4457871 Preparation of trans cyclohexane,1,4-diisocyanate and related compounds |
| 06/19/1984 | US4455260 Preparation of alk-1-enyl isocyanates |
| 05/01/1984 | CA1166649A1 Process for the production of n,o-disubstituted urethanes |
| 04/25/1984 | EP0106138A1 Continuous process for the hot phosgenation of amines |
| 04/25/1984 | EP0106038A1 Method for the preparation of isocyanic acid or aliphatic isocyanates by an oxidative dehydratation of formamides |
| 04/11/1984 | EP0105242A2 Reduction of free monomer in isocyanate adducts |
| 04/04/1984 | EP0104551A1 Cycloaliphatic diisocyanates, possibly in the form of a mixture of isomers, method for their preparation and their use as starting products in the preparation of synthetic products of the polyurethane type |
| 04/04/1984 | EP0104531A1 Cycloaliphatic diisocyanates, possibly in the form of a mixture of isomers, method for their preparation and their use as starting products in the preparation of synthetic products of the polyurethane type |
| 03/27/1984 | US4439616 Tertiary aralkyl urethanes and isocyanates derived therefrom |
| 03/27/1984 | US4439370 Preparation of trans cyclohexane 1,4-diisocyanate |
| 03/27/1984 | US4439369 Halogenated, tertiary diisocyanates and their preparation |
| 03/21/1984 | EP0103323A2 Process for the preparation of stabilized polyisocyanates, stabilized polyisocyanates having retarded reactivity and their use in the preparation of polyurethanes |
| 03/07/1984 | EP0101832A1 Tertiary aralkyl urethanes and isocyanates derived therefrom |
| 02/08/1984 | EP0100047A1 Process for the preparation of hexamethylene diisocyanate-1,6 and/or of the isomeric diisocyanates with 6 carbon atoms in the alkyl group |
| 02/07/1984 | US4430262 Oxidative conversion of oxamic acids, salts, and oxyanilides |
| 01/31/1984 | US4429098 Prepolymer with polyol |
| 01/24/1984 | CA1161057A1 1-monohalogenated isocyanates and the preparation of mixtures of 1-monohalogenated isocyanates and 1,2-unsaturated isocyanates |
| 01/04/1984 | EP0097243A1 Process for the separation of technically pure 2,4-diisocyanotoluene, or of mixtures of isomers having an increased content of 2,4-diisocyanotoluene, from mixtures essentially consisting of 2,4- and 2,6-diisocyanotoluene |
| 12/27/1983 | US4422976 Continuous preparation of organic isocyanates |
| 12/20/1983 | CA1159075A1 Preparation of 1-haloalkyl isocyanates and 1-alkenyl isocyanates |
| 12/06/1983 | US4419295 Continuous process for the production of organic isocyanates |
| 11/29/1983 | US4418211 Monomers |
| 11/15/1983 | US4415745 Ammoxidation of an alkylated aromatic to a nitrile; hydrolysis to an amide; rearrangement to a carbamate; aldehyde condensation; nontoxic |
| 11/08/1983 | US4414074 Process for the purification of 4,4'-diisocyanatodiphenylmethane by plural distillations |
| 11/02/1983 | EP0092738A1 Process for the continuous thermal decomposition of carbamic-acid esters |
| 10/12/1983 | EP0091054A1 1-Alkyl-2-isocyanatomethyl-isocyanato phenyl and/or 1-alkyl-4-isocyanatomethyl-isocyanato phenyl, method for their preparation and use |
| 09/20/1983 | US4405527 Process for the preparation of polyisocyanates |
| 09/14/1983 | EP0088223A1 Manufacture of isocyanates |
| 09/14/1983 | EP0088218A1 Preparation of tertiary alkyl isocyanates |
| 08/24/1983 | EP0086424A1 Method for the preparation of 1-alkenylisocyanates |
| 08/16/1983 | US4399074 From the halide, catalyst complex of zinc salt, pyridine and alkali metal cyanate |
| 08/16/1983 | US4399073 From the halide and alkali metal cyanate, water |
| 07/26/1983 | US4395369 Manufacture of isocyanate |
| 07/20/1983 | EP0083685A1 Manufacture of diisocyanates |
| 07/19/1983 | US4394495 Diisocyanates useful as a structural component in the preparation of polyurethane plastics |