| Patents for C08G 73 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups (26,191) |
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| 04/10/1991 | EP0421603A2 Melt-processable copolyesterimide |
| 04/10/1991 | EP0421195A2 Photoreactive resin compositions developable in a semi-aqueous solution |
| 04/10/1991 | EP0421123A1 Pretreatment process for electroless plating of polyimides |
| 04/09/1991 | US5006641 Heat resistance, construction materials, cyclization of polyureas |
| 04/09/1991 | US5006633 Novel compolymers and electroactive polymers derived therefrom |
| 04/09/1991 | US5006627 Power transmission belts prepared from polyimide and polyketone elastomers |
| 04/09/1991 | US5006370 Compositions for production of electronic coatings |
| 04/09/1991 | US5006278 Solution processible forms of electrically conductive polyaniline and the method of manufacture of electroconductive articles therefrom |
| 04/04/1991 | WO1991001307A3 N-cyanoimides and process for their preparation and uses thereof |
| 04/03/1991 | EP0420593A2 Terminal-modified imide oligomer composition |
| 04/03/1991 | EP0420417A1 Polyimide-poly(phenylquinoxaline) block copolymers |
| 04/03/1991 | EP0419979A1 Process for the preparation of conductive polyheteroaromatics |
| 04/03/1991 | EP0419804A2 Multilayer structures of different electroactive materials and methods of fabrication thereof |
| 04/02/1991 | US5004801 Heat resistance, oxidation resistance, thermoconductivity |
| 04/02/1991 | US5004800 Aromatic polythioetherimide |
| 04/02/1991 | US5004795 Aliphatic-aromatic polyamide-imides |
| 04/02/1991 | US5004788 Cyanato group containing phenolic resins, phenolic triazines derived therefrom |
| 04/02/1991 | US5004775 Laminates for electronics industry |
| 04/02/1991 | US5004627 Polyimides for mold release |
| 04/02/1991 | US5004560 Basic polypyrrylenemethines and salts thereof, and a process for their preparation |
| 04/02/1991 | CA1282536C Curing product based on olefinically unsaturated compounds and hydrogen-active compounds, a process for its preparation, and two-component lacquers based thereon |
| 04/02/1991 | CA1282534C Polyanhydride-siloxanes and polyimide-siloxanes obtained therefrom |
| 04/02/1991 | CA1282416C Aromatic compounds having sulfonyl groups and processes for the production of the same |
| 03/27/1991 | EP0419109A2 Preparation process of polyimide molded form |
| 03/27/1991 | EP0418889A2 Polyamic acid having three-dimensional network molecular structure, polyimide obtained therefrom and process for the preparation thereof |
| 03/27/1991 | EP0418883A1 Separation of fluids using polyimidesiloxane membrane |
| 03/27/1991 | EP0418406A1 Coreactive oligomer blends |
| 03/26/1991 | US5003085 Catalytic oxidation of methylated diphenyl substituted maleic anhydride |
| 03/26/1991 | US5003078 Synthesis of phthalonitrile resins containing ether and imide linkages |
| 03/26/1991 | US5003039 Amino phenyl containing curing agent for high performance phthalonitrile resin |
| 03/26/1991 | US5003031 Polyimides and co-polyimides based on dioxydiphthalic anhydride |
| 03/26/1991 | US5003030 Thermoplastic wholly aromatic copolyimide ester and process for producing the same |
| 03/26/1991 | US5003018 Structural adhesives, prepregs, noncracking, comonomer |
| 03/26/1991 | US5003017 Heat-curable bismaleimide-alkenyl heterocyclic molding material |
| 03/26/1991 | US5003013 Intermediate for composite of polymaleimide, polycyanate, epoxy resin and polyester |
| 03/26/1991 | US5002984 Product for the absorption of metal ions |
| 03/26/1991 | US5002700 Permanently doped polyaniline and method thereof |
| 03/23/1991 | CA2025681A1 Photoreactive resin compositions developable in a semi-aqueous solution |
| 03/22/1991 | CA2025813A1 Separation of fluids using polyimidesiloxane membrane |
| 03/21/1991 | WO1991003511A1 Synthetic polyamides and their salts |
| 03/20/1991 | EP0417897A1 Amide-imide copolymer resin of lowered water absorption and composites made therefrom |
| 03/20/1991 | EP0417778A1 Polyimide compositions containing polyorganosiloxane for improving atomic oxygen resistance |
| 03/20/1991 | EP0417770A1 Polyimide membranes and their use for gas separation |
| 03/20/1991 | EP0375682A4 Fire resistant foam composed of predominantly amide and imide linkages |
| 03/19/1991 | US5001217 Crosslinkable rigid-rod benzobisazole polymers |
| 03/19/1991 | CA1281742C High purity process for the preparation of 4,6- diamino-1,3-benzenediol |
| 03/19/1991 | CA1281723C Aromatic bismaleimides and prepreg resins therefrom |
| 03/16/1991 | CA2025401A1 Polyimide compositions containing polyorganosiloxane for improving atomic oxygen resistance |
| 03/14/1991 | DE4028844A1 Thermosetting resin with improved heat stability - contg. maleic imide cpd. and silicon cpd. |
| 03/13/1991 | EP0417028A2 Method for fabricating crosslinked polyimide high temperature composites and resins |
| 03/13/1991 | EP0417017A1 Copolymerized anthraquinone-polyester colour concentrates |
| 03/13/1991 | EP0416597A2 Liquid crystal display device |
| 03/13/1991 | EP0416506A1 Conductive material and process for producing the same |
| 03/13/1991 | EP0416429A1 Thermosettable bismaleimide resins |
| 03/13/1991 | EP0250518B1 Sulphur-containing nitrogenous electronic conductors polymers, preparation processes thereof and electrochemical generator using such polymers |
| 03/13/1991 | CA2024626A1 Polyimide membranes and their use for gas separation |
| 03/12/1991 | US4999419 Addition Copolymers Prepared From Ethylenically Unsaturated Bis-Imides And Ketones, Polyamine Catalyst |
| 03/12/1991 | US4999215 Method for manufacturing polyimide thin films by plasma polymerization |
| 03/12/1991 | CA1281481C Diamino-9,10-dihydroanthracenes and polyamide acid (esters) and polyimides derived therefrom |
| 03/12/1991 | CA1281480C Bis-maleimide resin systems and structural composites prepared therefrom |
| 03/07/1991 | WO1991003001A1 Non-linear optically active polyimides |
| 03/07/1991 | WO1991002765A1 Polyimides for stn displays |
| 03/07/1991 | WO1991002764A1 Rigid-rod polymers |
| 03/07/1991 | WO1991002729A1 Process for the production of trimellitic anhydride with improved color |
| 03/07/1991 | DE4027385A1 Thermosetting bis:maleimide mouldings compsn. - contg. spirobiindan cpd. as comonomer which is di:alkenyloxy-tetra:methyl spirobiindan or isomer |
| 03/06/1991 | EP0415809A1 Polyimide precursor compositions and their use |
| 03/06/1991 | EP0415447A1 Liquid crystal device |
| 03/06/1991 | EP0415276A1 Branched polybenzazole polymers and method of preparation |
| 03/05/1991 | US4997908 Solvent resistant polymidesiloxane |
| 03/05/1991 | US4997892 Sulfalkylation of hydroxyethylated polybenzimidazole polymers |
| 03/05/1991 | US4997869 Production of electronic coatings by spin coating a partially fluorinated polyimide composition |
| 03/05/1991 | US4997462 Pervaporation method of selectively separating water from an organic material aqueous solution through aromatic imide polymer asymmetric membrane |
| 03/02/1991 | CA2024452A1 Thermosetting resin composition, resin sheet, prepreg and laminated sheet |
| 03/01/1991 | WO1991003508A1 Copolymerized anthraquinone-polyester color concentrates |
| 03/01/1991 | CA2024350A1 Branched polybenzazole polymers and method of preparation |
| 02/28/1991 | DE3927498A1 Polyimide fuer stn-displays Polyimides for stn-displays |
| 02/27/1991 | EP0414560A2 Method of manufacturing polyimide thin film and method of manufacturing liquid crystal orientation film of polyimide |
| 02/27/1991 | EP0414381A2 Process for preparation of polyimide prepolymers |
| 02/27/1991 | EP0414377A2 Polymers and prepolymers and their use in a method for the treatment of wool |
| 02/27/1991 | EP0413973A1 Liquid crystalline polyesteretherimides and intermediates therefor |
| 02/27/1991 | EP0413783A1 Thickening agents for aqueous systems |
| 02/26/1991 | US4996363 Contacting with Group 2A metal silicate catalyst; aluminum-free |
| 02/26/1991 | US4996293 Composition comprising polyimide resin from diphenyl sulfone -3,3',4,4'-tetracarboxylic acid dianhydride |
| 02/26/1991 | US4996290 Polyester amides containing imide groups, process for their production and their use as hot-melt adhesives |
| 02/26/1991 | US4996285 Molding material; from N,N*bisimide, diprimary diamine, and epoxy resin |
| 02/26/1991 | US4996278 Novel polyimidesiloxanes and methods for their preparation and use based on diamines with pendant fluorine groups |
| 02/26/1991 | US4996268 Adhesives |
| 02/26/1991 | US4996267 Polysulfone |
| 02/26/1991 | US4996254 From 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane and a 2,2-bis(4-aminophenoxyphenyl)hexafluoropropane, cycloaliphatic keto ne solvent, preventing precipitation during spin coating under humid conditions |
| 02/26/1991 | CA1280849C Blends of dicyanate esters of dihydric phenols |
| 02/21/1991 | WO1991001983A1 Cyclobutarene ketoanhydride and ketocarboxy monomeric and polymeric compositions |
| 02/20/1991 | EP0413624A1 Gas separation membrane |
| 02/20/1991 | EP0413613A1 Flame retardants |
| 02/20/1991 | EP0413415A1 Carboxylic acids and derivates thereof |
| 02/20/1991 | EP0413375A1 Thermotropic polyesters |
| 02/20/1991 | EP0413257A2 Cyclic poly(aryl ether) oligomers, a process for preparation thereof, and polymerization of cyclic poly (aryl ether) oligomers |
| 02/20/1991 | EP0413193A1 Method of making 1,1'-sulfonyl-bis(3-nitro-5-trifluoromethyl)benzene |
| 02/20/1991 | EP0413109A2 Fabrication of printed circuit boards using conducting polymer |
| 02/20/1991 | EP0413087A1 Photosensitive composition and use thereof |
| 02/19/1991 | US4994783 Doping metal-free polymer |