| Patents for C07D 229 - Heterocyclic compounds containing rings of less than five members having two nitrogen atoms as the only ring hetero atoms (515) |
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| 09/22/1992 | US5149766 Reacting monomeric aromatic diisocyanates in presence of 1,2-dimethylimidazole in inert organic solvent; by-product inhibition |
| 09/01/1992 | US5143994 Uretdione Diisocyanates |
| 04/22/1992 | EP0481318A1 Process for the preparation of polyisocyanates containing urethdione and isocyanate groups |
| 04/08/1992 | EP0478990A1 Polyisocyanate mixture, process for its preparation and its use in polyurethane lacquers |
| 04/01/1992 | EP0477516A1 Dimerisation catalysts, a process for their preparation and their use in the production of uretdione and isocyanurate groups-containing polyisocyanates |
| 03/31/1992 | US5100998 Process for improving the flowability of dimerized 2,4-tolylenediisocyanate |
| 03/24/1992 | US5098983 Uretidone and isocyanurates and polyurethane/ureas |
| 02/25/1992 | CA2049517A1 Dimerization catalysts, a process for their preparation and their use for the production of poly-isocyanates containing uretdione and isocyanurate groups |
| 11/26/1991 | CA1292474C Anti-spasmodic agents having a ring in the main chain |
| 10/03/1991 | WO1991012243A3 Copolymerizable imidazolidinone monomer |
| 08/28/1991 | EP0443138A1 Polyisocyanate mixtures, process for their preparation and their use as a binder for coating-compositions or as a reaction component for compounds reactive with isocyanate groups or carboxylic groups |
| 08/27/1991 | US5043092 Process for the production of polyisocyanate mixtures containing uretdione and isocyanurate groups |
| 08/15/1991 | WO1991012243A2 Copolymerizable imidazolidinone monomer |
| 08/15/1991 | CA2074098A1 Copolymerizable imidazolidinone monomer |
| 08/14/1991 | EP0440960A1 Process to improve the flowability of dimerized 2,4-toluylendiisocyanate |
| 07/25/1991 | DE4001247A1 Improving free-flowing properties of dimerised 2,4-TDI - by adding 0.01-10 wt. per cent pptd. or pyrogenic silica with hydrophobic surface |
| 07/24/1991 | CA2033741A1 Polyisocyanate mixtures, processes for their production and their use as binders for coating compositions or as reactants for compounds reactive to isocyanate groups or carboxyl groups |
| 07/09/1991 | US5030726 Polymerizable cyclic urea derivatives |
| 07/09/1991 | CA1285956C Low temperature stable polymethylene polyphenylene polyisocyanates |
| 03/27/1991 | EP0418639A1 Process for the preparation of uretdion-group containing polyisocyanates |
| 03/20/1991 | EP0417603A2 Process for the preparation of urethdione group-containing polyisocyanates |
| 03/15/1991 | CA2023667A1 Process for the preparation of uretdione group containing polyisocyanates |
| 03/15/1991 | CA2023148A1 Process for the preparation of uretdione group containing polyisocyanates |
| 02/19/1991 | US4994541 Process for the preparation of polyisocyanates containing uretdione and isocyanurate groups, the polyisocyanates obtained by this process and their use in two-component polyurethane coatings |
| 02/06/1991 | EP0411615A1 4-(N-substituted amino)-2-butynyl-1-ureas and thioureas and derivatives thereof as centrally acting muscarinic agents |
| 02/03/1991 | CA2022510A1 4-(n-substituted amino)-2-butynyl-1-ureas and thioureas and derivatives thereof as centrally acting muscarinic agents |
| 01/29/1991 | US4988688 Cognitive activators |
| 01/22/1991 | US4987032 Functional organic thin film and method of manufacture thereof |
| 01/22/1991 | CA1279325C Process for the production of uretdione group-containing compounds, the compounds obtained according to this process and the use thereof in the production of polyurethane plasticsmaterial |
| 10/02/1990 | CA1274835A1 Process for the preparation of (cyclo)aliphatic uretediones |
| 08/14/1990 | US4948903 Catalysts for photochemical polymerization |
| 07/11/1990 | EP0377177A1 Process for the preparation of polyisocyanates presenting urethdione and isocyanurate groups, polyisocyanates obtained by this process and their use in two-component polyurethabe lacquers |
| 07/04/1990 | EP0376751A1 Polymerizable cyclic urea derivatives and polymers having a pendant urea |
| 06/29/1990 | CA2006851A1 Polymerizable cyclic urea derivatives and polymers having a pendant urea |
| 06/26/1990 | US4937012 Containing o,p*-and p,p*-diphenylmethane diisocyanates; polyurethane foams |
| 05/29/1990 | US4929724 Phosphorous-nitrogen dimerization catalysts |
| 03/27/1990 | US4912210 Process for the preparation of (cyclo)aliphatic uretediones |
| 12/27/1989 | EP0347885A1 Perfluorodiaziridines and process for preparing them |
| 10/18/1989 | EP0337116A1 Process for the preparation of urethdione and isocyanurate group-containing polyisocyanate compositions |
| 08/30/1989 | EP0178520B1 Process for the preparation of urethdione groups containing compounds, the compounds obtained with this process and their use in the preparation of polyurethanes |
| 05/31/1989 | EP0317744A2 Process for the preparation of (cyclo)-aliphatic uret diones |
| 05/02/1989 | US4826971 1-diarylmethyl-1,2-diozetidin-3-one derivatives |
| 12/20/1988 | CA1247112A1 Process for the preparation of complexes of one mol of dimerized or low-oligodimerized 4,4'-diisocyanato- diphenylmethane and two to three mol of 4,4'- diisocyanatodiphenylmethane, corresponding complexes, and their use for polyurethane production |
| 11/22/1988 | US4786736 Reaction of amine with aldehyde or ketone, cyclization, oxidation |
| 01/19/1988 | US4720545 Process for the preparation of complexes of one mol of dimerized or low-oligodimerized 4,4'-diisocyanatodiphenylmethane and two to three mol of 4,4'-diisocyanatodiphenylmethane, corresponding complexes, and their use for polyurethane production |
| 10/28/1987 | EP0242551A2 Process for the preparation of diaziridines and their derivatives |
| 05/26/1987 | US4668780 Isocyanate-uretdiones and a method for their production |
| 10/01/1986 | EP0195917A1 Process for the preparation of addition products from 1 mol dimerized or low degree oligodimerized 4,4'-diisocyanatodiphenyl methane and 2 or 3 moles 4,4'-diisocyanatodiphenyl methane, addition products thereof and their use in the preparation of polyurethane |
| 07/30/1986 | EP0189156A2 Low temperature stable polymethylene polyphenylene polyisocyanates |
| 06/17/1986 | US4595534 Process for the production of uretdione group-containing polyisocyanates |
| 04/23/1986 | EP0178520A2 Process for the preparation of urethdione groups containing compounds, the compounds obtained with this process and their use in the preparation of polyurethanes |
| 01/02/1986 | EP0166173A1 Process for the preparation of uretdion-group containing polyisocyanates |
| 01/02/1986 | EP0166172A1 Uretdiondiisocyanates, polyisocyanate mixtures containing them, process for their preparation and their use in the preparation of polyurethane synthetics |
| 11/12/1985 | US4552877 Antiarrhythmia agents |
| 08/20/1985 | CA1192201A1 Norbornane compounds, plant growth regulators containing these compounds, and their intermediates |
| 08/13/1985 | US4535183 Palliation of sickle cell anemia, respiratory disorders, hypoxia, radiosensitization of tumors |
| 06/04/1985 | US4521338 Process for the preparation of low molecular weight 4,4'-diphenylmethane-uretdione-diisocyanates |
| 05/28/1985 | US4520186 Improving mechanical properties of elastomers |
| 04/23/1985 | US4512795 Norbornane compounds, plant growth regulators containing these compounds, and their intermediates |
| 11/20/1984 | US4483798 Polyaddition products containing uretidione groups and process for their preparation |
| 10/09/1984 | US4476054 Uretidione dimer of isophorone diisocyanate and method of preparation |
| 08/29/1984 | EP0116847A2 Process for using sediments developed during storage of pure MDI |
| 08/14/1984 | US4465638 Heating in presence of crude mdi |
| 04/11/1984 | EP0105168A1 Aromatic uretdione-di-urea diamines, process for their production and their use in the production of polyurethanes |
| 02/08/1984 | EP0099976A1 Isocyanato-uret diones and a method for their preparation |
| 10/18/1983 | CA1155451A1 Process for the continuous preparation of polyisocyanates containing uretdione groups and their use as starting components for the production of polyurethane resins |
| 08/10/1983 | EP0085170A2 Norbornan compounds, plant growth regulator containing them and their precursors |
| 06/21/1983 | CA1148545A1 Liquid carbodiimide-and/or uretonimine-isocyanurate- containing polyisocyanate compositions |
| 05/31/1983 | CA1147330A1 N.sub.b-quaternary derivatives of sandwicine and isosandwicine methods and intermediate products in the manufacture of their derivatives and methods of using same and pharmaceutical compositions thereof |
| 03/16/1983 | EP0074023A1 Uretdione-containing diisocyanates, process for the preparation of thermosetting oligo-addition products, and their use in the preparation of highly molecular resins |
| 02/16/1983 | EP0071899A1 Process for the preparation of low molecular weight 4.4'diphenyl-methane-uretdione diisocyanates |
| 08/17/1982 | US4344855 Process for the production of polyisocyanates which contain carbodiimide groups and which are stable in storage |
| 06/30/1982 | EP0054924A2 Pharmaceutical compounds, their preparation and use |
| 06/23/1982 | EP0054294A2 Process for converting isocyanato groups into carbodiimido and/or urethonimino groups |
| 06/22/1982 | US4336365 Process for the continuous preparation of polyisocyanates containing uretdione groups and their use as starting components for the production of polyurethane resins |
| 02/17/1982 | EP0045996A1 Process for the preparation of polyaddition products containing uret-dione groups, and products prepared by this process |
| 02/17/1982 | EP0045995A1 Process for the preparation of a uretidine dione not containing an isocyanurate from isophorone diisocyanate |
| 01/12/1982 | US4310345 Polycyclic nitrogen-containing compounds |
| 10/13/1981 | US4294719 Also uretone-imine groups; highly selective, removable catalyst matrix |
| 08/19/1981 | EP0033927A1 Process for the continuous preparation of polyisocyanates containing uret-dione groups, and their use as constructive components in producing polyurethane plastics |
| 08/18/1981 | US4284730 Liquid carbodiimide- and uretonimine-isocyanurate-containing polyisocyanate compositions and microcellular foams made therefrom |
| 08/04/1981 | US4282147 Non-sedimenting, polar hydrophobic substance |
| 08/04/1981 | US4282027 Tri/penta/aza-tetracyclo-dodeca/enes/dienes or diecaenes |
| 07/15/1981 | EP0032011A1 Modified isocyanate compositions |
| 05/27/1981 | EP0029116A1 N(b)-quaternary 10-bromo-sandwicine and 10-bromo-isosandwicine derivatives, process and intermediates for preparing the derivatives and medicaments containing these derivatives |
| 05/19/1981 | US4268300 Plant growth regulators |
| 04/14/1981 | CA1099259A1 Polycyclic nitrogenous compounds |
| 03/31/1981 | US4259235 Tricyclic nitrogenous compounds having string plant growth regulating properties |
| 03/24/1981 | US4257941 Polycyclic nitrogen-containing compounds |
| 11/25/1980 | CA1090332A1 Polycyclic nitrogen-containing compounds |
| 10/21/1980 | US4229347 Manufacture of microcellular polyurethanes |
| 09/30/1980 | US4225532 Stabilized preparations of aromatic isocyanatosulphonic acids |
| 08/05/1980 | US4216313 Antiviral thiazinyl benzimidazoles |
| 06/11/1980 | EP0011784A1 Suspensions of aromatic isocyanatosulfonic-acid uretdiones in organic polyisocyanates and process for their preparation |
| 06/11/1980 | EP0011693A1 N-trifluoromethane-sulfonylaminophenyl-substituted N-heterocycles, their preparation, compositions containing them and their use in regulating plant growth |
| 06/03/1980 | CA1078854A1 Process for the production of polyisocyanates which contain carbodiimide groups and which are stable in storage |
| 04/29/1980 | CA1076582A1 Antiviral thiazolinyl or thiazinyl ketobenzimidazoles |
| 02/19/1980 | US4189434 Polycyclic nitrogen-containing compounds |
| 11/27/1979 | US4176118 Aromatic uretdione-diisocyanate-disulphonic acids |
| 11/27/1979 | CA1067091A1 Polyisocyanates which contain carbodiimide groups and which are stable in storage |