| Patents for C07C 263 - Preparation of derivatives of isocyanic acid (3,065) |
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| 07/05/1983 | US4391758 Process for methyl isocyanate production |
| 06/28/1983 | CA1148972A1 Separating toluene diisocyanate and/or higher boiling solvents from distillation residues of the toluene diisocyanate manufacture using a fluidized bed |
| 06/14/1983 | US4388246 Process for the preparation of polyisocyanates |
| 05/31/1983 | US4386033 Boiling, condensation of vapors, circulation; separation |
| 05/25/1983 | EP0079516A2 Process for making 4,4'-diisocyanatodiphenyl methane |
| 05/24/1983 | US4384999 From an amike hydrohalide and phosgene then reacting with an urea |
| 05/24/1983 | CA1146957A1 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 |
| 05/11/1983 | EP0078729A1 Process for preparing aromatic isocyanates by carbonylation of nitro compounds in the presence of supported catalysts prepared from heteropolymetallic complexes |
| 05/04/1983 | EP0078005A1 Method for the preparation of isocyanates by pyrolysis of urethanes |
| 04/13/1983 | EP0076715A1 Modified crude toluene diisocyanate suited for the obtention of polyurethane foams having a high resilience |
| 04/12/1983 | US4379767 Manufacture of isocyanates |
| 04/12/1983 | CA1144562A1 Process for the production of urethanes useful in the production of isocyanates |
| 03/23/1983 | EP0074561A2 Cyclic ceto-butyraldehydes, process for their preparation and their use in the preparation of cyclic diisocyanates |
| 03/22/1983 | US4377530 From olefin and isocyanic acid |
| 03/02/1983 | EP0072915A2 Process for preparing 2,4,6-triisocyanatotoluene |
| 02/09/1983 | EP0071080A2 Process for preparing polyisocyanates |
| 01/18/1983 | US4369141 Process to improve isocyanate yield upon pyrolysis of a polyfunctional urethane which has been extracted with a combination of hydrochloric acid and alcohol |
| 12/22/1982 | EP0067463A1 A process for the preparation of isocyanates and/or derivatives thereof |
| 12/07/1982 | CA1137076A1 Fluid spray mixer - reactor system |
| 12/01/1982 | EP0065727A1 Process for the continuous production of organic mono or polyisocyanates |
| 11/30/1982 | US4361518 Reaction of tert-benzyl halides with isocyanic acid |
| 10/19/1982 | US4354979 Decomposition of n,n'-disubstituted allophanic esters in an organic carbonate |
| 10/12/1982 | US4353841 Aromatic isocyanate preparation |
| 09/29/1982 | EP0061013A1 Process for the preparation of polyisocyanates |
| 09/08/1982 | EP0059400A2 Process for the preparation of urethanes |
| 09/01/1982 | EP0058896A1 Method for the preparation of isocyanates of carboxylic esters |
| 08/25/1982 | EP0058368A1 Mixtures of homologues and isomers of diisocyanates and their use as starting components for the manufacture of polyurethane plastics |
| 08/18/1982 | EP0057772A2 Halogenated, tertiary diisocyanates and process for their preparation |
| 08/17/1982 | US4344891 Halogenated tertiary alkyl isocyanates and their preparation |
| 07/27/1982 | US4341898 Synthesis of isocyanates from nitroalkanes |
| 07/20/1982 | CA1128246A1 Process for producing organic polyisocyanate having good stability on long storage |
| 07/07/1982 | EP0055359A1 Process for the preparation of 1-alkenyl isocyanates |
| 06/30/1982 | EP0054817A2 Process for the continuous thermal decomposition of esters of carbamic acids and use of mixtures of esters of carbamic acids and isocyanates obtained by this process for the preparation of isocyanates |
| 06/01/1982 | US4332739 Process for the manufacture of aromatic isocyanates |
| 05/26/1982 | EP0052254A1 Preparation of organic isocyanates |
| 05/25/1982 | US4331560 Catalyst and process for preparing organic isocyanates |
| 05/18/1982 | US4330479 Zinc or aluminum catalyst |
| 05/11/1982 | CA1123449A1 Process for the preparation of isocyanate derivatives of aliphatic, cycloaliphatic, and araliphatic compounds |
| 05/05/1982 | EP0050739A1 Method for the preparation of aliphatic isocyanates |
| 04/06/1982 | US4323515 Porphrin catalysts |
| 03/31/1982 | EP0048371A2 Process for the preparation of N,O-disubstituted urethanes |
| 03/31/1982 | EP0048368A2 Process for the preparation of N- and O-substituted mono- or bis-urethanes |
| 03/30/1982 | US4322365 Preparation of isocyanates |
| 03/30/1982 | CA1120943A1 .alpha.,.beta.-DIHALOALKYL ISOCYANATES AND A PROCESS FOR THE PREPARATION OF SUCH COMPOUNDS |
| 03/10/1982 | EP0046917A1 Polyisocyanate mixtures of the diphenylmethane class, as well as their use as synthesis components in the manufacture of polyurethanes by the isocyanate-polyaddition process |
| 03/03/1982 | EP0046556A1 Diisocyanates or mixtures of diisocyanates of the diphenylmethane class, processes for their preparation, as well as their use as synthesis components in the manufacture of polyurethanes by the isocyanate-polyaddition process |
| 02/24/1982 | EP0046184A1 Aryloxyalkyl isocyanates and methods for their preparation |
| 02/09/1982 | US4314948 Preparation of mixtures of 1-monohalogenated isocyanates and 1,2-unsaturated isocyanates |
| 02/09/1982 | CA1117962A1 Catalytic oxidation of formamides to form isocyanates |
| 02/02/1982 | US4314048 Aliphatic triisocyanate, a method for preparing it and the preparation of polyurethane resins therewith |
| 01/19/1982 | CA1116621A1 Preparation of organic mono- and poly- isocyanates |
| 12/23/1981 | EP0042059A1 Process for the preparation of isocyanates |
| 12/08/1981 | US4304731 Phosgenation |
| 10/27/1981 | US4297456 Process for working up isocyanate distillation residues |
| 10/20/1981 | CA1111058A1 Process for continuously working up solutions of the type accumulating in the phosgenation of monoamines |
| 10/13/1981 | US4294774 Preparation of organic isocyanates |
| 10/13/1981 | US4294773 Preparation of 1-haloalkyl isocyanates and 1-alkenyl isocyanates |
| 10/06/1981 | US4293680 Process for the production of diisocyanato toluene mixtures having an increased content of 2,6-diisocyanato toluene, and the use thereof as synthesis components in the production of polyurethane elastomers |
| 09/29/1981 | US4292254 Cosolvent, solvent extraction, aqueous acid |
| 09/22/1981 | US4290970 Process for the manufacture of aromatic di- and/or polyisocyanates |
| 09/22/1981 | US4290968 Preparation of polyisocyanates from polycarbamates |
| 09/15/1981 | US4289589 Product from phosgenation of toluenediamines |
| 09/01/1981 | US4287132 The improved process wherein the polycarbamate is distilled, a polar solvent is added to the residue, and the resulting solution is crystallized |
| 08/04/1981 | US4282167 Conversion of amides to isocyanates via phase transfer catalysis |
| 07/14/1981 | US4278809 Process for preparing 2-isocyanatoalkyl esters of organic carboxylic acids |
| 06/23/1981 | US4275223 Preparation of trans-cyclohexane-1,4-diurethanes |
| 05/20/1981 | EP0028724A1 Process for preparing aryl isocyanates by thermal decomposition of aryl urethanes |
| 05/13/1981 | EP0028338A2 Process for preparing aromatic di- and/or polyisocyanates |
| 05/12/1981 | US4267070 Catalyst for the synthesis of aromatic monoisocyanates |
| 05/06/1981 | EP0027940A1 Process for preparing urethanes |
| 05/05/1981 | CA1100522A1 Preparation of trans cyclohexane 1,4 diisocyanate and related compounds |
| 04/21/1981 | CA1099733A1 Process for preparing 2-isocyanatoalkyl esters of unsaturated carboxylic acids |
| 04/01/1981 | EP0025907A1 Halogenated tertiary alkyl isocyanates and process for their preparation |
| 04/01/1981 | EP0025906A1 1-Monohalogenated isocyanates; process for the preparation of mixtures of 1-monohalogenated isocyanates and 1-2-unsaturated isocyanates |
| 03/31/1981 | US4259255 Isocyanatoaryl sulfonates |
| 03/25/1981 | EP0025552A1 Process for the preparation of 1-haloalkyl isocyanates and 1-alkenyl isocyanates |
| 03/24/1981 | US4257974 Process for the preparation of α,β-dihaloalkyl isocyanates |
| 03/11/1981 | EP0024665A1 Diisocyanates or mixtures of diisocyanates of the diphenyl-methane series, process for their preparation and their use as a synthesis component to produce polyurethane plastics according to the isocyanate-polyaddition process |
| 03/11/1981 | EP0024555A1 Process for the production of diisocyanato toluene mixtures contaning an increased amount of 2,6-diisocyanato toluene and production of polyurethane elastomers using these mixtures |
| 03/10/1981 | US4255453 Addition of carbon monoxide to metal salt or ester of carbamic acid |
| 03/03/1981 | CA1096876A1 Method for preparing halosilyl carbamates and isocyanates derived therefrom |
| 02/24/1981 | CA1096393A1 Process for the preparation of an aliphatic monoisocyanate |
| 01/20/1981 | CA1094090A1 No translation available |
| 12/09/1980 | US4238404 N-chloroamide, tertiary amine |
| 11/26/1980 | EP0019517A1 Process for the preparation of organic isocyanates from nitro compounds |
| 11/04/1980 | US4231952 Decomposition of aliphatic carbamoyl chloride in the presence of a high-boiling mono- or diisocyanate |
| 10/29/1980 | EP0017972A1 Fluidised-bed recovery of tolylene diisocyanate and/or high boiling solvents from distillation residues of the production of tolylene diisocyanate |
| 10/21/1980 | CA1088091A1 Process for the continuous production of organic isocyanates |
| 09/23/1980 | US4224238 Process for preparing tertiary alkyl isocyanates |
| 09/23/1980 | CA1086327A1 Methyl isocyanate process |
| 09/16/1980 | US4223145 Thermal decomposition of hydrochloride of trisubstituted urea |
| 08/05/1980 | US4216316 Process for the production of alkyl cyanates and oligomers |
| 08/05/1980 | US4216063 Evaporation from distillation residues |
| 07/29/1980 | CA1082728A1 Process for preparation of aromatic isocyanates |
| 06/10/1980 | US4207251 Catalytic oxidation of formamides to form isocyanates |
| 06/03/1980 | US4206136 Process for the production of methylisocyanate |
| 06/03/1980 | CA1078861A1 Method of manufacturing aromatic isocyanates |
| 05/20/1980 | US4203916 Preparation of trans cyclohexane 1,4 diisocyanate |
| 05/14/1980 | EP0010675A2 Working-up process of toluylen diisocyanate-distillation residues and use of the products thus obtained as mouldable material or as active fillers, in particular in the production of panels and shaped articles |
| 04/30/1980 | EP0010281A2 Process for preparing alpha, beta-dihalogeno-alkyl isocyanates |