Patents
Sitemap › C08 - Organic macromolecular compounds; Their preparation or chemical working-up; Compositions based thereon › C08G - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds › 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
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)
10/1991
10/09/1991EP0450189A2 High temperature stable negative resists and process for the production of high temperature stable relief structure
10/09/1991EP0449811A1 Improved process for synthesis of heterocyclic polymers
10/09/1991CN1014205B Apparatus for removing sulfur from organic polysulfides ir2850
10/08/1991US5055593 Chemical intermediate, hardeners for epoxy resins; heat resistance
10/08/1991US5055550 Improved thermal, oxidation resistant properties
10/08/1991US5055549 Process for preparing photosensitive heat-resistant polymer
10/08/1991US5055542 Carrier resin for pigment pastes, preparation and use thereof
10/08/1991US5055116 Gas separation membranes comprising miscible blends of polyimide polymers
10/08/1991CA1290490C Amphiphilic high polymer and process for producing the same
10/08/1991CA1290341C 2,6-bis(aminophenoxy)pyridine and method of preparing the same
10/04/1991WO1991015285A1 Gas separation membranes comprising miscible blends of polyimide polymers
10/04/1991CA2079798A1 Gas separation membranes comprising miscible blends of polyimide polymers
10/04/1991CA2039562A1 Polyetherimide foam procursors and foams having improved physical properties and methods of making them
10/02/1991EP0449593A2 Low temperature curable dicyanate esters of dihydric phenols
10/02/1991EP0449488A1 Azlactone Michael adducts
10/02/1991EP0449292A2 Multilayer printed circuit board and production thereof
10/02/1991EP0449117A2 Organic polymer and preparation and use thereof
10/01/1991US5053544 Raw material for poylimides; liquid crystal display elements; watches; electronic calculators
10/01/1991US5053480 Polyimide resin from cyclobutane tetracarboxylic acid dianhydride
10/01/1991US5053478 Polyaminoquinolines by cyclization of the polymer from a di(cyanovinyl monomer and a diamine; nonhydrolyzing; defect-free films and composites; dielectrics
10/01/1991US5053474 Heat stable prepregs
10/01/1991US5053434 Diamondoid polymeric compositions
10/01/1991US5053152 High molecular weight nitrogen-containing condensates and fuels and lubricants containing same
09/1991
09/30/1991CA2039198A1 Polyalkoxyamines, their preparation, dispersant additives prepared therefrom and use of the additives in lubricating oils and fuels
09/29/1991CA2017902A1 Low temperature curable dicyanate esters of dihydric phenols
09/25/1991EP0448359A1 Curable resins, their preparation, and protective coatings for electronic parts
09/25/1991EP0448252A1 Polyimide copolymers containing 4-4'-bis(aminophenoxy)biphenyl and siloxane diamine moieties
09/25/1991EP0447971A2 Gas separation material
09/25/1991EP0447816A1 Thin carbon plate and process for producing the same
09/25/1991EP0447692A1 Laminated product
09/24/1991US5051520 9,9-bis(perfluroralkyl)xanthene, 9-aryl-9-perfluroralkylxanthene
09/24/1991US5051494 Thermosetting resin composition comprising an aromatic amine
09/24/1991US5051493 Condensation polymerization of bis phthalonitrile resins containing amide, ether or imine groups in the presence of phthalocyanines to give uniform polymers
09/24/1991CA1289562C Blends of tris(cyanatophenyl) alkanes and bis(cyanatophenyl) alkanes
09/22/1991CA2037095A1 Gas separation material
09/19/1991WO1991013926A1 Compounds containing polyether chains and quaternary ammonium groups
09/19/1991WO1991013924A1 Water-soluble or water-dispersible compounds containing polyether chains and quaternary ammonium groups
09/18/1991EP0446947A2 Gas separating asymmetric membrane
09/18/1991EP0446943A2 Stable solutions of polyaniline and shaped articles therefrom
09/18/1991EP0446555A1 Polymeric diphenyldiamines
09/17/1991US5049680 Novel cationic lactam polymers and 1-(3-alkyl amino propyl)pyrrolidone-2 intermediates therefor
09/17/1991US5049649 Optically clear, free-standing, flexible
09/17/1991US5049625 Polymeric diphenyldiamines
09/17/1991US5049606 Polyaminobismaleimide resin and fluorescein
09/17/1991US5049403 Process for the preparation of surface modified solid substrates
09/16/1991WO1991014043A1 Compositions and polymer fabrics treated with the same
09/16/1991CA2057899A1 Compositions and polymer fabrics treated with the same
09/16/1991CA2037649A1 Stable solutions of polyaniline and shaped articles therefrom
09/12/1991DE4007598A1 Wasserloesliche oder wasserdispergierbare verbindungen, enthaltend polyetherketten und quaternaere ammoniumgruppen Wasserloesliche or water-dispersible compounds containing polyether chains and quaternary ammonium groups
09/12/1991DE4007597A1 Wasserloesliche oder wasserdispergierbare, polyetherketten und quaternaere ammoniumgruppen enthaltende verbindungen Wasserloesliche or water-dispersible, polyether chains, and quaternary ammonium group-containing compounds
09/11/1991EP0445577A2 Polyperylenes
09/11/1991EP0445409A2 Aromatic polyethers containing ester groups
09/10/1991US5047531 For polymers
09/10/1991US5047499 Solution polymerization, trimellitic acid derivative and aromatic diamine, multistage, dehydration catalyst
09/10/1991US5046822 Polyimide film; ferroelectricity
09/05/1991DE4016296C1 Flame retardant thermosetting adhesive for metals etc. - comprises oxa:aza:tetralin, halogenated epoxy] resins and opt. additives
09/05/1991DE4006646A1 New poly:perylene(s) useful in pigments, sensors
09/04/1991EP0444807A1 Polyquinoxaline compositions and their method of preparation
09/04/1991EP0444574A1 Organic-inorganic composites and method of making them
09/04/1991EP0444142A1 Polyquinoline copolymers
09/04/1991EP0444065A1 Condensation products based on colophonium maleic imides
09/04/1991EP0392008A4 Copolymers containing polybenzoxazole, polybenzothiazole and polybenzimidazole moieties
09/03/1991US5045625 Thermosetting polyimide prepolymers
09/03/1991US5045608 Polyimide-poly(phenylquinoxaline) block copolymers
09/03/1991US5045381 Thermosetting resin composition, printed circuit board using the resin composition and process for producing printed circuit board
09/03/1991US5045364 Nonlinear optical devices and methods
09/03/1991US5045159 Derivatives of compounds containing a carbonyl group conjugated to an aromatic moiety and electrophilic methods of fabrication thereof
09/03/1991US5045093 Gas separating membranes from polyimide polymers and a process for using the same
08/1991
08/28/1991EP0443688A2 Spirodilactam-arylsulfone oligomers
08/28/1991EP0443524A1 High-density vitreous carbon material and process for producing the same
08/28/1991EP0443352A2 Polyimides end-capped with diaryl substituted acetylene
08/27/1991US5043419 Process for preparing a polyimide and a composite material containing the same
08/27/1991US5043411 Flexible strength and(or) modulus
08/27/1991US5043370 Polyalkylene imide of high brightness and retention characteristics and low toxicity and method of increasing paper whiteness
08/27/1991US5043248 Photosensitive amhilphilic high polymers and process for producing them
08/27/1991US5043214 Flame resistant article made of phenolic triazine and related method
08/27/1991US5042992 Gas separation material
08/22/1991WO1991009897A3 Process for preparing crosslinked polymers
08/22/1991DE4104493A1 Polymers of 5-membered heterocycle(s) esp. pyrrole and thiophene - by electrochemical polymerisation in organic solvent in presence of tetra:butyl-ammonium alkyl-sulphate as electrolyte
08/22/1991CA2035353A1 Polyquinoxaline compositions and the method of preparation
08/21/1991EP0441850A1 Condensation products based on colophonium maleic imides.
08/21/1991CA2036500A1 Spirodilactam-arylsulfone oligomers
08/20/1991US5041611 Reacting organometallic compound with (thio)carbonyl halide
08/20/1991US5041528 New dimer for synthesis of high performance polymer matrix composites
08/20/1991US5041527 Using 5-norbornene-2,3-dicarboxylic acid and 4,4'-methylenedianiline; free of trimer
08/20/1991US5041526 Of nadic acid, ester, or anhydride with aromatic diamine
08/20/1991US5041520 Process for preparing polyimide having excellent high temperature stability
08/20/1991US5041518 Reacting aminocarboxylic acid derivatives, polyisocyanates and carboxylic acid derivatives in presence of condensed aromatic hydrocarbons
08/20/1991US5041513 Polyimide resin compositions
08/20/1991US5041507 Thermosetting resin composition composed of a polymaleimide compound, a phenolic novolac resin and an epoxy resin
08/20/1991US5041506 Dissolving rigid polymer and matrix polymer in aqueous phosphoric acid, removing acid
08/20/1991US5041502 Telechelic polyisobutylene and block copolymer derivatives
08/20/1991US5041478 Maleimidized cyclic phosphonitrile with an aromatic amine and/or aromatic maleimide; heat resistant, moisture resistant
08/20/1991CA1287767C Coated material and use thereof
08/14/1991EP0441286A1 Compatibilizing agent and polymer blend composition using the same
08/14/1991EP0441013A1 Polyimide sheet and preparation process of the sheet
08/14/1991EP0440981A1 Method for treating a polyimide surface for subsequent plating thereon
08/13/1991US5039787 Method for production of cationic water-soluble resin and water-treating agent containing said resin based on imine modified polyethylene glycol halohydrin ethers
08/13/1991US5039778 Dihydroxy-pendant rigid-rod benzobisazole copolymer
08/13/1991US5039417 Membrane made from a multi-block polymer comprising an imide or amide-acid prepolymer chain extended with a compatible second prepolymer and its use in separations
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