| 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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| 02/19/1991 | US4994579 For dimensionally stable heat resistant plastics |
| 02/19/1991 | US4994544 Production process for polyimide fibers |
| 02/19/1991 | US4994536 Thermally stable bisimido copolymerizates |
| 02/19/1991 | US4994526 Telechelic polyisobutylene and block copolymer derivatives |
| 02/19/1991 | US4994207 Electroconductivity; shear strength |
| 02/19/1991 | CA2023387A1 Polymer product for the selective absorption of dissolved ions |
| 02/18/1991 | CA2021726A1 Method of making 1,1'-sulfonyl-bis(3-nitro-5-trifluoromethyl)-benzene |
| 02/15/1991 | CA2023269A1 Cyclic poly(arylether) oligomers, a process for preparation thereof, and polymerization of cyclic poly(aryl ether) oligomers |
| 02/15/1991 | CA2023154A1 Gas separation membrane |
| 02/15/1991 | CA2021929A1 Amide-imide copolymer resin of lowered water absorption and composites made therefrom |
| 02/14/1991 | DE3926691A1 Nlo-aktive polyimide Nlo-active polyimide |
| 02/13/1991 | EP0412882A1 Gas separation membrane |
| 02/13/1991 | EP0412881A1 Gas separation membrane |
| 02/13/1991 | EP0412827A2 Polymer composition |
| 02/12/1991 | US4992593 Partially fluorinated diphenyl ethers, processes for their preparation and their use |
| 02/12/1991 | US4992493 Heat, oxidation resistance; photostability |
| 02/12/1991 | CA2023124A1 Gas separation membrane |
| 02/12/1991 | CA2023123A1 Gas separation membrane |
| 02/12/1991 | CA1280230C Method for making crosslinked silicone-polyamide block polymers |
| 02/07/1991 | WO1991001344A1 Process for the production of new cross-linked polymers |
| 02/07/1991 | WO1991001340A1 Polyimides comprising substituted benzidines |
| 02/07/1991 | WO1991001307A2 N-cyanoimides and process for their preparation and uses thereof |
| 02/07/1991 | WO1991001304A1 Process to synthesize ab-pbo monomer and phosphate salts thereof |
| 02/07/1991 | DE4024595A1 Protective coating material for semiconductors - contains -polyimide from bis-benzene-di:acid-anhydride-per:fluoro:propane, PMDA-type di:anhydride, silicon-di:amine and ether-di:amine |
| 02/06/1991 | EP0411772A2 Flexible printed-circuit base board and process for producing the same |
| 02/06/1991 | EP0411461A2 Hydrophilic polycarbodiimide polymer,pulp-like material consisting of said hydrophilic polycarbodiimide polymer, and process for producing said polymer or said material |
| 02/06/1991 | EP0411400A2 Basic condensates |
| 02/06/1991 | EP0411304A1 Acetylene bis-phthalic compounds and polyimides made therefrom |
| 02/06/1991 | EP0411303A2 Halogen-free melt processable silicone-imide wire coating compositions having low smoke values |
| 02/06/1991 | EP0411111A1 Ammonium compound, composition containing it and desinfection method. |
| 02/05/1991 | US4990667 Alkylated 1,1-bis(4-aminophenyl)-1-phenyl-2,2,2-trifluoroethanes |
| 02/05/1991 | US4990624 Intermediates anhydrides useful for synthesizing etherimides |
| 02/05/1991 | US4990543 Polyimides, polyamides |
| 02/05/1991 | US4990275 Separation membrane |
| 02/05/1991 | US4989947 Plastic optical fibers |
| 02/04/1991 | WO1991002013A1 Biscitraconimide copolymers with olefinically unsaturated materials |
| 02/04/1991 | CA2064466A1 Biscitraconimide copolymers with olefinically unsaturated materials |
| 01/30/1991 | EP0410793A1 Method of gas separation and membranes therefor |
| 01/30/1991 | EP0410298A1 Bismaleimide resin |
| 01/30/1991 | EP0410039A1 Cyclobutarene ketoanhydride and ketocarboxy monomeric and polymeric compositions |
| 01/30/1991 | EP0409995A1 Vinylic resin composition |
| 01/30/1991 | EP0271736B1 Resins of low thermal expansivity |
| 01/30/1991 | EP0231373B1 A process for the production of a liquid crystalline extended chain polymer composition |
| 01/29/1991 | US4988821 Thermotropic liquid crystal compound |
| 01/29/1991 | US4988795 Polyamide that can be converted to polyimides to form ultrathin heat resistant, chemical resistant films |
| 01/29/1991 | US4988792 Thermotropic liquid crystals, tensile strength, fibers, impact strength |
| 01/29/1991 | US4988785 Heat curable resin and cured composite, molding materials, laminates |
| 01/29/1991 | US4988780 Reacting a tertiary amine-modified anionic phenolic resin with a cyanogen halide to cyanate and curing to effect cyclotrimerization |
| 01/29/1991 | US4988544 Polyimide composite formed by impregnation of fibers with alcohol solution of monomer mixture and condensation polymerization |
| 01/29/1991 | US4988371 Novel alicyclic polyimide gas separation membranes |
| 01/28/1991 | CA2020916A1 Bismaleimide resins |
| 01/27/1991 | WO1991001971A1 Sterically hindered diamines and polymers prepared therefrom |
| 01/27/1991 | CA2059560A1 Sterically hindered diamines and polymers prepared therefrom |
| 01/24/1991 | WO1991000886A1 Diamines as chain extenders for apo-bmi bismaleimide resin |
| 01/24/1991 | WO1991000774A1 Separative membrane made of aromatic polyimide |
| 01/23/1991 | EP0409777A2 Polyimide-forming compositions |
| 01/23/1991 | EP0409466A2 Process for the preparation of a polyimide film |
| 01/23/1991 | EP0409228A2 Liquid crystal display element |
| 01/23/1991 | EP0409218A2 Method for production of aqueous dispersion of long-chain alkyl graft polymer and aqueous release agent |
| 01/23/1991 | EP0409194A1 Ferroelectric liquid crystal element |
| 01/23/1991 | EP0409115A2 Thermoplastically processable graft polymers |
| 01/23/1991 | EP0409070A2 Mesogenic cyanite functional maleimides and thermosets thereof |
| 01/23/1991 | EP0409069A2 Mesogenic polycyanates and thermosets thereof |
| 01/23/1991 | EP0409003A2 Derivatives of compounds containing a carbonyl group conjugated to an aromatic moiety and electrophilic methods of fabrication thereof |
| 01/23/1991 | EP0409002A2 Process for nucleophilic derivatization of materials having an imide group conjugated to an aromatic moiety |
| 01/23/1991 | EP0408672A1 Tough, high performance, addition-type thermoplastic polymers |
| 01/23/1991 | CN1048710A Process for preparing high-viscosity polypara-phenyl diformyl para-phenyl diamine |
| 01/22/1991 | US4987264 Novel polyphenol and thermosetting plastics prepared therefrom |
| 01/22/1991 | US4987238 Process for the preparation of high-purity 5,5'-[2,2,2-trifluoro-1-(trifluoromethyl)-ethylidene]bis-1,3-isobenzofurandione |
| 01/22/1991 | US4987228 Polytriazine compounds containing recurring piperidylamidinotriazine structural units and their use as stabilizers for organic materials |
| 01/22/1991 | US4987219 Heat resistance, chemical resistance, dielectrics |
| 01/22/1991 | US4987218 Composites, adhesives, protective coatings |
| 01/22/1991 | US4987214 Imide type prepolymer composition comprising unsaturated bis imide, diamine, and a tertiary butyl hydroquinone polymerization inhibitor |
| 01/22/1991 | US4987188 Impact modification of a heat resistant thermoplastic polyimide |
| 01/22/1991 | US4987167 Halogen-containing polyester resin composition and electric wire |
| 01/22/1991 | CA2020970A1 Liquid crystal display element |
| 01/22/1991 | CA1279418C Compositions of inorganic-organic alloy with high nitrogen content polymers and their manufacture |
| 01/22/1991 | CA1279327C Thermally adaptive polymers and prepolymers and methods of making them |
| 01/22/1991 | CA1279262C Cosmetic composition containing an amide-amine type condensate, and process for the cosmetic treatment using such condensate |
| 01/22/1991 | CA1279218C Positive photoresist compositions having deep uv response, photosensitive elements and thermally stable photochemically imaged systems containing same |
| 01/20/1991 | CA2021191A1 Method for production of aqueous dispersion of long-chain alkyl graft polymer and aqueous release agent |
| 01/18/1991 | CA2021293A1 Polyimide film and preparation process of the film |
| 01/18/1991 | CA2021289A1 Mesogenic cyanate functional maleimides and thermosets thereof |
| 01/18/1991 | CA2021280A1 Mesogenic polycyanates and thermosets thereof |
| 01/16/1991 | EP0408540A1 Mixed polyimides and process for preparing them |
| 01/16/1991 | EP0408539A1 A process for the preparation of polyimides |
| 01/16/1991 | EP0408473A1 Linear, aromatic poly(amide-imides) functionalized through terminal groups containing latent maleimide functions, process for their preparation and their use for preparing cured polymers |
| 01/16/1991 | EP0408166A2 Composite polymeric materials |
| 01/16/1991 | EP0407994A1 Lightweight flexible imide foam and method of producing same |
| 01/16/1991 | EP0407661A1 Biscitraconimide (co)polymer and process for curing biscitraconimides with an anionic catalyst |
| 01/16/1991 | EP0232368B1 Aromatic bismaleimides and prepreg resins therefrom |
| 01/15/1991 | US4985568 Method of making crosslinking imidophenylamines |
| 01/15/1991 | US4985539 Fibers, Films |
| 01/15/1991 | US4985529 Thermosettable imide compound and epoxy resin composition containing the same |
| 01/15/1991 | US4985527 Reacting a Diisocyanate, a Tricarboxylic Acid Monoanhydride and a Siloxane Diisocyanate |
| 01/15/1991 | US4985138 Process for treating a charge containing dewaxing solvent and dewaxed oil |
| 01/15/1991 | US4984376 Midsole for footwear |
| 01/15/1991 | CA2021159A1 Process to synthesize ab-pbo monomer and phosphate salts thereof |
| 01/12/1991 | WO1991000879A1 Biscitraconimide (co)polymers and curing with anionic catalyst |
| 01/12/1991 | CA2064209A1 Biscitraconimide (co) polymers and curing with anionic catalyst |