Patents
Patents for C07C 265 - Derivatives of isocyanic acid (3,263)
01/1985
01/23/1985EP0131859A2 Process for the preparation of 2,2-Dialkylpropyl isocyanates substituted in position 3 by heterocycles or by the dialkylamino group
01/22/1985US4495107 Process for producing alkali metal cyanates
01/09/1985EP0130875A1 Process for the halogenation-nitration fluorination of aromatic compounds
12/1984
12/19/1984EP0128382A1 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
12/04/1984US4486603 Stereospecific, from cyclohexane-1,4-dicarboxylic acid or ester
12/04/1984CA1178968A1 Process for the preparation of polyisocyanates
11/1984
11/28/1984EP0126300A1 Multi-step process for the production of 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl isocyanates
11/28/1984EP0126299A1 Multi-step process for the preparation of 1,6-hexamethylenediisocyanate and for isomeric aliphatic diisocyanates
11/27/1984CA1178604A1 Low temperature storage stable liquid diphenylmethane diisocyanates
11/27/1984CA1178603A1 2,2,4,4-tetraalkyl-1,3-cyclobutanediol modified diphenylmethane diisocyanate
11/21/1984EP0125726A1 Improved process for preparing alkyl isocyanates
11/21/1984EP0125591A1 Trialkyl-substituted aromatic diisocyanates
11/20/1984CA1178292A1 Self-granulating reaction product of 4,4'- diphenylmethane diisocyanate and resorcinol
11/20/1984CA1178291A1 Process for the continuous thermal cleavage of carbamic acid esters and preparation of isocyanates from the products thereof
11/14/1984EP0125169A1 Liquid composition containing diisocyanates with a diphenyl methane structure, and process for its preparation
11/13/1984US4482499 Process for the preparation of isocyanates by thermal cleaving of urethanes
10/1984
10/31/1984EP0123412A1 Method for manufacture of diphenylmethane diisocyanates
10/31/1984EP0123352A1 Aliphatic diisocyanate
10/23/1984US4478757 Process for the manufacture of aromatic isocyanates
10/23/1984CA1176647A1 Production of isocyanates from esters of aromatic carbamic acids (urethanes)
10/17/1984EP0122031A1 Process for producing alkali metal cyanates
10/16/1984US4477389 Polyhalogenated phenyl isocyanate synthesis with excess phosgene and either triethylamine or tetramethylurea
10/03/1984EP0120254A1 Process for the preparation of polyisocyanates, polyisocyanates obtained by this process and their use in the preparation of polyurethanes or polyamines
10/03/1984EP0120193A1 Aliphatic isocyanate compounds
09/1984
09/25/1984CA1175061A1 N'-phenyl-n-methylurea derivatives, and their production and use
09/11/1984US4470930 Preparation of nuclear chlorinated aromatic compounds
08/1984
08/29/1984EP0116847A2 Process for using sediments developed during storage of pure MDI
08/28/1984US4468405 Insecticides
08/21/1984US4467114 Preparation of trans cyclohexane 1,4-diurea
08/14/1984US4465639 Process for polyisocyanates
08/14/1984US4465638 Heating in presence of crude mdi
08/08/1984EP0115298A2 Process for preparing polyisocyanates containing isocyanurate groups, compounds obtainable by this process, and their use for preparing polyurethanes
08/08/1984EP0114970A2 Improved process for the preparation of polymethylene polyphenyl polyisocyanates
07/1984
07/17/1984CA1171193A1 Wax dispersions
07/17/1984CA1171097A1 Polyisocyanates of the diphenyl methane series and process for the production thereof
07/11/1984EP0113044A2 Diisocyanates or mixtures of diisocyanates, process for their production, as well as their use in the production of polyurethanes
07/11/1984EP0113043A1 Diisocyanates or mixtures of diisocyanates, method for their preparation and their use in the prepration of synthetic materials of the polyurethane type
07/10/1984US4459236 Preparation of 1-alkenyl isocyanates
07/03/1984US4457871 Preparation of trans cyclohexane,1,4-diisocyanate and related compounds
06/1984
06/19/1984US4455260 Preparation of alk-1-enyl isocyanates
06/12/1984US4454296 Triisocyanates and their production and use
05/1984
05/02/1984EP0107577A1 Isocyanates having a diphenyl methane structure and a process for their preparation
04/1984
04/25/1984EP0106138A1 Continuous process for the hot phosgenation of amines
04/25/1984EP0106038A1 Method for the preparation of isocyanic acid or aliphatic isocyanates by an oxidative dehydratation of formamides
04/24/1984CA1166395A1 Composition for polyurethane adhesives
04/04/1984EP0104551A1 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
04/04/1984EP0104531A1 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
03/1984
03/27/1984US4439616 Tertiary aralkyl urethanes and isocyanates derived therefrom
03/27/1984US4439370 Preparation of trans cyclohexane 1,4-diisocyanate
03/27/1984US4439369 Halogenated, tertiary diisocyanates and their preparation
03/20/1984US4437880 Herbicides
03/07/1984EP0101832A1 Tertiary aralkyl urethanes and isocyanates derived therefrom
02/1984
02/14/1984US4431455 Wax dispersions and their use in the manufacture of sheets or moulded bodies
02/08/1984EP0100047A1 Process for the preparation of hexamethylene diisocyanate-1,6 and/or of the isomeric diisocyanates with 6 carbon atoms in the alkyl group
02/07/1984US4430505 Urea, primary amines, alcohols
02/07/1984US4430262 Oxidative conversion of oxamic acids, salts, and oxyanilides
01/1984
01/24/1984US4427438 Herbicides
01/24/1984CA1161057A1 1-monohalogenated isocyanates and the preparation of mixtures of 1-monohalogenated isocyanates and 1,2-unsaturated isocyanates
01/04/1984EP0097243A1 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
12/1983
12/27/1983US4422976 Continuous preparation of organic isocyanates
12/20/1983CA1159075A1 Preparation of 1-haloalkyl isocyanates and 1-alkenyl isocyanates
12/06/1983US4419295 Continuous process for the production of organic isocyanates
11/1983
11/29/1983US4418211 Monomers
11/08/1983US4414074 Process for the purification of 4,4'-diisocyanatodiphenylmethane by plural distillations
11/02/1983EP0092738A1 Process for the continuous thermal decomposition of carbamic-acid esters
10/1983
10/26/1983EP0092454A1 Halogenated aromatic isocyanates or their mixtures having a diphenyl-methane structure
10/18/1983US4410597 Polyurethane resins and polyurethane resin coating compositions
10/12/1983EP0091054A1 1-Alkyl-2-isocyanatomethyl-isocyanato phenyl and/or 1-alkyl-4-isocyanatomethyl-isocyanato phenyl, method for their preparation and use
09/1983
09/20/1983US4405527 Process for the preparation of polyisocyanates
09/14/1983EP0088223A1 Manufacture of isocyanates
09/14/1983EP0088218A1 Preparation of tertiary alkyl isocyanates
08/1983
08/24/1983EP0086424A1 Method for the preparation of 1-alkenylisocyanates
08/16/1983US4399074 From the halide, catalyst complex of zinc salt, pyridine and alkali metal cyanate
08/16/1983US4399073 From the halide and alkali metal cyanate, water
07/1983
07/26/1983US4395369 Manufacture of isocyanate
07/20/1983EP0083685A1 Manufacture of diisocyanates
07/19/1983US4394495 Diisocyanates useful as a structural component in the preparation of polyurethane plastics
07/12/1983US4393002 ε-Caprolactam blocked diisocyanates
07/05/1983US4391758 Process for methyl isocyanate production
06/1983
06/28/1983CA1148972A1 Separating toluene diisocyanate and/or higher boiling solvents from distillation residues of the toluene diisocyanate manufacture using a fluidized bed
06/21/1983US4389519 Tris/isocyanatomethyl/benzene or cyclohexane
06/14/1983US4388246 Process for the preparation of polyisocyanates
05/1983
05/31/1983US4386033 Boiling, condensation of vapors, circulation; separation
05/31/1983US4386032 Liquid polyisocyanate compositions
05/25/1983EP0079516A2 Process for making 4,4'-diisocyanatodiphenyl methane
05/24/1983US4384999 From an amike hydrohalide and phosgene then reacting with an urea
05/24/1983CA1146957A1 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
05/11/1983EP0078729A1 Process for preparing aromatic isocyanates by carbonylation of nitro compounds in the presence of supported catalysts prepared from heteropolymetallic complexes
05/04/1983EP0078005A1 Method for the preparation of isocyanates by pyrolysis of urethanes
04/1983
04/26/1983US4381405 Process for the preparation of polymethylene polyphenyl polyisocyanate composition
04/26/1983CA1145237A1 Preparation of polymeric isocyanate containing release agent
04/20/1983EP0077105A1 Diisocyanate
04/20/1983EP0077104A1 Oligomer of a diisocyanate
04/19/1983US4380647 2-Aminopyrrolin 5-ones and aminocyclopropyl isocyanates therefrom
04/12/1983US4379767 Manufacture of isocyanates
04/12/1983CA1144564A1 Process for the preparation of n,o- disubstituted urethanes useful for the preparation of isocyanates
04/12/1983CA1144562A1 Process for the production of urethanes useful in the production of isocyanates
04/05/1983US4378992 Urea derivatives, and their production and use
03/1983
03/23/1983EP0074561A2 Cyclic ceto-butyraldehydes, process for their preparation and their use in the preparation of cyclic diisocyanates
03/22/1983US4377530 From olefin and isocyanic acid
1 ... 20 21 22 23 24 25 26 27 28 29 30 31 32 33