Patents
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Patents for C07C 265 - Derivatives of isocyanic acid (3,263)
03/1983
03/02/1983EP0072915A2 Process for preparing 2,4,6-triisocyanatotoluene
02/1983
02/23/1983EP0072483A1 Self-granulating reaction product of 4,4'-diphenylmethane diisocyanate and resorcinol
02/16/1983EP0071839A1 Aromatic diisocyanates having N,N-disubstituted sulfonamido groups, their method of preparation and their use in the preparation of polyurethanes
02/09/1983EP0071279A1 Substituted N-aroyl N'-phenyl urea compounds
02/09/1983EP0071139A2 Simplified process for the preparation of polyamines by alkaline hydrolysis compounds containing NCO groups, and use of these polyamines in the preparation of polyurethanes
02/09/1983EP0071080A2 Process for preparing polyisocyanates
02/08/1983US4372891 Method of recovering pure toluene diisocyanate from a polymeric residue product
02/01/1983CA1140583A1 Separation of 2,4-tolylene diisocyanate from mixtures of 2,4- and 2,6-tolylene diisocyanate
01/1983
01/19/1983EP0069855A2 N-(2-fluoro-4-halo-5-substituted phenyl)hydantoins, and their production and use
01/05/1983EP0068220A1 Low temperature storage stable liquid diphenylmethane diisocyanates
12/1982
12/22/1982EP0067463A1 A process for the preparation of isocyanates and/or derivatives thereof
12/08/1982EP0066130A1 2,2,4,4-Tetraalkyl-1,3-cyclobutanediol modified diphenylmethane diisocyanate
12/01/1982EP0065727A1 Process for the continuous production of organic mono or polyisocyanates
11/1982
11/30/1982US4361518 Reaction of tert-benzyl halides with isocyanic acid
11/23/1982US4360476 Method of concentrating a solution of methylene diphenyl diisocyanate in diphenyl oxide
10/1982
10/19/1982US4354979 Decomposition of n,n'-disubstituted allophanic esters in an organic carbonate
10/12/1982US4353841 Aromatic isocyanate preparation
09/1982
09/29/1982EP0061013A1 Process for the preparation of polyisocyanates
09/14/1982US4349484 Process for the manufacture of mixtures of diphenylmethane diisocyanates and polyphenyl polymethylene polyisocyanates
09/01/1982EP0058896A1 Method for the preparation of isocyanates of carboxylic esters
08/1982
08/25/1982EP0058368A1 Mixtures of homologues and isomers of diisocyanates and their use as starting components for the manufacture of polyurethane plastics
08/18/1982EP0057862A1 Partially carbodiimidised methylene bis (phenylisocyanate) having low temperature storage stability, a process for its preparation and its application as a starting material for the diisocyanate-polyaddition reaction
08/18/1982EP0057772A2 Halogenated, tertiary diisocyanates and process for their preparation
08/17/1982US4344892 Self-granulating reaction product of 4,4'-diphenylmethane diisocyanate and resorcinol
08/17/1982US4344891 Halogenated tertiary alkyl isocyanates and their preparation
08/17/1982US4344855 Process for the production of polyisocyanates which contain carbodiimide groups and which are stable in storage
08/11/1982EP0057502A2 Wax dispersions and their use in the manufacture of sheets or moulded bodies
07/1982
07/27/1982US4341898 Synthesis of isocyanates from nitroalkanes
07/20/1982CA1128246A1 Process for producing organic polyisocyanate having good stability on long storage
07/20/1982CA1128044A1 1-benzoyl-3-(aryloxy-or arylthiopyridinyl) ureas compounds
07/07/1982EP0055359A1 Process for the preparation of 1-alkenyl isocyanates
07/06/1982US4338256 Triisocyanates
07/06/1982US4338162 Inhibitor for the polymerization of a 2-isocyanatoalkyl ester of an α,β-ethylenically unsaturated carboxylic acid
06/1982
06/30/1982EP0054817A2 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
06/09/1982EP0053359A1 Method of bonding films with a polyurethane adhesive
06/08/1982CA1125299A1 Aliphatic triisocyanate, a method for producing the same and a polyurethane coating composition prepared therefrom
06/01/1982US4332742 Low temperature storage stable liquid diphenylmethane diisocyanates
06/01/1982US4332741 Dichloroparabanic acid stabilized diphenylmethane diisocyanate-polymethylene polyphenyl isocyanate compositions
06/01/1982US4332739 Process for the manufacture of aromatic isocyanates
05/1982
05/26/1982EP0052254A1 Preparation of organic isocyanates
05/18/1982US4330479 Zinc or aluminum catalyst
05/11/1982CA1123449A1 Process for the preparation of isocyanate derivatives of aliphatic, cycloaliphatic, and araliphatic compounds
05/05/1982EP0050739A1 Method for the preparation of aliphatic isocyanates
05/04/1982CA1122997A1 Stabilized polyisocyanates partially blocked with hydroxy amines
04/1982
04/06/1982US4323515 Porphrin catalysts
03/1982
03/31/1982EP0048368A2 Process for the preparation of N- and O-substituted mono- or bis-urethanes
03/30/1982US4322365 Preparation of isocyanates
03/30/1982US4322364 Modified isocyanate compositions
03/30/1982CA1120943A1 .alpha.,.beta.-DIHALOALKYL ISOCYANATES AND A PROCESS FOR THE PREPARATION OF SUCH COMPOUNDS
03/16/1982US4320069 Oxazoline stabilized diphenylmethane diisocyanate-polymethylene polyphenyl isocyanate compositions
03/10/1982EP0046917A1 Polyisocyanate mixtures of the diphenylmethane class, as well as their use as synthesis components in the manufacture of polyurethanes by the isocyanate-polyaddition process
03/03/1982EP0046556A1 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
02/1982
02/24/1982EP0046184A1 Aryloxyalkyl isocyanates and methods for their preparation
02/23/1982CA1118783A1 Storage-stable, liquid carbodiimide modified polyisocyanates and process for their manufacture
02/16/1982US4316034 Isocyanate precursor
02/09/1982US4314948 Preparation of mixtures of 1-monohalogenated isocyanates and 1,2-unsaturated isocyanates
02/09/1982CA1117962A1 Catalytic oxidation of formamides to form isocyanates
02/02/1982US4314048 Aliphatic triisocyanate, a method for preparing it and the preparation of polyurethane resins therewith
01/1982
01/19/1982US4311800 Process for working up cross-linked isocyanate distillation residues containing urea groups and use of the products of the process as starting components for the production of synthetic resins
01/19/1982CA1116621A1 Preparation of organic mono- and poly- isocyanates
12/1981
12/23/1981EP0042059A1 Process for the preparation of isocyanates
12/22/1981US4307029 Process for preparing polymethylene-polyphenyl polyisocyanates
12/09/1981EP0041171A1 2-Chloro-5-nitro-phenyl isocyanate, process for its preparation and its use
12/02/1981EP0040859A1 N'-phenyl-N-methylurea derivatives, their production and use
11/1981
11/17/1981CA1112659A1 Partially carbodiimidized methylenebis (phenyl isocyanate) and preparation thereof
11/10/1981US4299766 From a lactam-blocked aromatic isocyanate followed by catalytic hydrogenation
10/1981
10/27/1981US4297456 Process for working up isocyanate distillation residues
10/27/1981US4297294 Process for making 4,4'-methylene diphenyl diisocyanate
10/20/1981CA1111058A1 Process for continuously working up solutions of the type accumulating in the phosgenation of monoamines
10/13/1981US4294774 Preparation of organic isocyanates
10/13/1981US4294773 Preparation of 1-haloalkyl isocyanates and 1-alkenyl isocyanates
10/13/1981US4294719 Also uretone-imine groups; highly selective, removable catalyst matrix
10/13/1981US4294666 Distillation
10/06/1981US4293680 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
09/1981
09/22/1981US4290970 Process for the manufacture of aromatic di- and/or polyisocyanates
09/22/1981US4290969 Process for the continuous production of polyisocyanate
09/15/1981US4289589 Product from phosgenation of toluenediamines
09/08/1981US4288382 Reversible adducts of isocyanates with boron compounds
09/01/1981US4287132 The improved process wherein the polycarbamate is distilled, a polar solvent is added to the residue, and the resulting solution is crystallized
08/1981
08/25/1981US4285876 Isocyanate adducts with β-diketones
08/25/1981US4285874 1-Isocyanato-anthraquinones
08/18/1981CA1107422A1 Aqueous isocyanate emulsions for gluing chipboards
07/1981
07/14/1981US4278809 Process for preparing 2-isocyanatoalkyl esters of organic carboxylic acids
07/08/1981EP0031650A1 Process for preparing liquid polyisocyanate compositions, and their use
07/01/1981EP0031207A1 Process for preparing liquid polyisocyanate compositions, and their use
06/1981
06/30/1981US4276228 1,6,11-Undecane triisocyanate
06/30/1981CA1104148A1 Production of isocyanates
06/23/1981US4275223 Preparation of trans-cyclohexane-1,4-diurethanes
05/1981
05/20/1981EP0028781A1 Polyisocyanate mixtures of the diphenylmethane series and their use as additives in adhesives
05/20/1981EP0028724A1 Process for preparing aryl isocyanates by thermal decomposition of aryl urethanes
05/13/1981EP0028338A2 Process for preparing aromatic di- and/or polyisocyanates
05/13/1981EP0028337A2 Process for preparing mixtures of diphenylmethane diisocyanates and polyphenyl-polymethylene polyisocyanates
05/06/1981EP0027953A1 Process for preparing N,O-disubstituted urethanes
05/06/1981EP0027943A1 Working-up process for cross-linked isocyanate-distillation residues containing urea groups, and the use of the products thus obtained as starting material in the production of plastics
05/06/1981EP0027940A1 Process for preparing urethanes
05/05/1981CA1100522A1 Preparation of trans cyclohexane 1,4 diisocyanate and related compounds
04/1981
04/21/1981CA1099733A1 Process for preparing 2-isocyanatoalkyl esters of unsaturated carboxylic acids
04/07/1981US4260811 Reaction with acid chloride, distillation
04/07/1981US4260554 Storage-stable, liquid carbodiimide modified polyisocyanates and process for their manufacture
04/07/1981US4260532 Aqueous isocyanate emulsions prepared with polyglycol and polymerized unsaturated acid amide
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