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  • 1
    Electronic Resource
    Electronic Resource
    Etude de la decomposition thermique des polyheteroarylenes (1985)
    Springer
    Journal of thermal analysis and calorimetry 30 (1985), S. 1053-1062 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die thermische und thermooxydative Zersetzung von Polybenzimidazopyrrolonen und Polybenzimidazobenzochinolinen und einige der die Bindungen und individuellen Fragmente modellierenden heterozyklischen Verbindungen dieser Polymere wurden untersucht. Es wurde festgestellt, daß bei der Pyrolyse von Polyheteroarylenen und der entsprechenden Modellverbindungen das Aufsprengen der Ringe entweder gleichzeitig mit der Spaltung der Car-H-Bindung oder bei höheren Temperaturen erfolgt. Von den untersuchten Verbindungen sind die vollständig aromatischen und die mit Benzolringen kondensierten heterozyklischen Verbindungen am thermostabilsten. Eine vergleichende Untersuchung der Struktur und Thermostabilität der untersuchten Verbindungen ergab eine Korrelation.
    Abstract: Резюме Исследованы термиче ская и термоокислительная деструкция таких пол игетероариленов, как полибензимидазо пирролоны, полибензимидазобен зоизохинолины, их про изводных с бензимидазольными ц иклами в макроцепи, а т акже ряда гетероциклических с оединений, моделирующих звенья и отдельные фрагмент ы этих полимеров. Установле но, что в процессе пиролиза полигетеро ариленов и соответст вующих модельных соединени й, распад циклов происходит либо одно временно с разрушени ем связи C ap -H, либо при более высо кой температуре. Показан о, что среди исследова нных структур, наиболее те рмостойкими являютс я полностью ароматиче ские системы и гетеро циклические системы, конденсиров анные с бензольным ядром. Проведена срав нительная корреляци я между структурой изученны х соединений и их термоустойчивостью.
    Notes: Abstract An investigation was made of the thermal and thermooxidative decompositions of polybenzimidazopyrrolones and polybenzimidazobenzoquinolines, as well as a number of heterocyclic compounds modelling the linkages and individual fragments of these polymers. It was established that in the pyrolyses of the polyheteroarylenes and the corresponding model compounds the destruction of cycles occurs either simultaneously with cleveage of the Car-H bond or at a higher temperature. It was shown that the completely aromatic compounds and the heterocyclic compounds condensed with the benzene nucleus are the most thermostable of the investigated compounds. A comparative study revealed a correlation between the structures and thermal stabilities of the studied compounds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02108536
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal investigation of inhibition of polybismaleimide polymerization (1988)
    Springer
    Journal of thermal analysis and calorimetry 34 (1988), S. 99-103 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Nach DTA und DSC-Befunden kann die Anwendung von Zusätzen von Heteropolyverbindungen die Polymerisationstemperatur um 20–60° erhöhen. Nach TG-Ergebnissen nimmt die Wärmebeständigkeit des Polymers in Gegenwart kleiner Inhibitormengen nicht ab. Der Inhibitor wirkt in einer Konzentration von 1–5 Gew.%.
    Abstract: Резюме Согласно данным ДТА и ДСК, использование в качестве добавок гет ерополисоединений приводит к повышению температуры радикал ьной полимеризация полиб исмалеинимида на 20–60° по сравнению с и сходным олигомером. С огласно же данным ТГ, наличие н ебольших количеств ингибитор а не вызывает уменьше ния термоустойчивости п олимера. Концентраци я ингибитора в 1–5 весовы х продента является н аиболее эффективной.
    Notes: Abstract DTA and DSC data revealed that the use of heteropoly compound additives allows an increase in the temperature of polybismaleimide radical polymerization by 20–60 deg in comparison with the value for the initial olygomer. TG data showed that in the presence of certain amounts of the inhibitor the polymer thermoresistance does not decrease. The range of effective concentration of the inhibitor is 1–5 wt.%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01913376
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  • 3
    Electronic Resource
    Electronic Resource
    Selectivity of the acylation of N-phenylmaleimide (1983)
    Springer
    Russian chemical bulletin 32 (1983), S. 1533-1533 
    Details
    ISSN: 1573-9171
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00954385
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  • 4
    Electronic Resource
    Electronic Resource
    The synthesis and investigation of thermostable soluble polybenzazoles (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 128-130 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Poly(benzimidazole) und Poly(amidobenzimidazole) auf Basis unterschiedlicher Tetramine, Diphenylate von Dicarbonsäuren sowie ε-Caprolactam und Diaminen wurden untersucht. Für die Synthese wurden 3,3′-Diaminobenzidin oder aromatische Tetramine mit Methylen-, Sauerstoff- oder Sulfongruppen zwischen den Benzenringen eingesetzt. Die erhaltenen Polymere sind thermostabile, lösliche Produkte mit ausreichend hohen Molekülmassen.
    Notes: The poly(benzimidazole)s and poly(amidobenzimidazole)s produced on the base of different tetramines, diphenylate of dicarboxylic acids, and ε-caprolactam or diamines are investigated. In the synthesis were used 3,3′-diaminobenzidine or aromatic tetramines containing methylene, oxygen, or sulfon groups between the benzene cycles. The produced polymers are thermostable, soluble, and have high enough molecular weights.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1991.010420221
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis of new N,N′-bisimides for thermostable polymers (1991)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 42 (1991), S. 130-132 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Neue N,N′-Bis-maleinimide wurden durch Kondensationsreaktion von mehrkernigen aromatischen Diaminen mit Maleinsäureanhydrid synthetisiert. Die erhaltenen N,N′-Bis-maleinimide sind kristalline, gelb gefärbte Verbindungen, die in Aceton, Dioxan, Amidlösungsmitteln sowie in organischen und anorganischen Säuren löslich sind. Ihre Struktur wurde durch Elementaranalyse, NMR- und IR-Spektroskopie identifiziert. Die N,N′-Bis-maleinimide wurden in Cresol-Lösung mit Diaminen zu Polymeren polykondensiert.
    Notes: New N,N′-bisimides were synthesized by condensation of polynuclear aromatic diamines with maleic anhydride. The obtained N,N′-bisimides are crystalline yellow-coloured compounds, soluble in acetone, dioxan, amidic solvents, organic and inorganic acids. Their structure was identified by elemental analysis, NMR and IR spectroscopy. The N,N′-bisimides were polycondensated with diamines in cresol solution to high polymers.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1991.010420222
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis and investigation of poly(benzimidazole imides) (1988)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 39 (1988), S. 437-440 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Temperaturbeständige hochmolekulare Poly(benzimidazolimide) wurden durch die Reaktion von Bis-benzimidazolen mit Bis-maleinimiden bei 110 bis 120°C in DMF in Gegenwart von Carbonsäuren hergestellt. Die Polymere sind schwach gefärbte Substanzen, die in Amidlösungsmitteln, DMSO, Ameisen- und Schwefelsäure löslich sind. Ihre Struktur wurde durch Elementaranalyse und IR-Spektroskopie identifiziert. Gepreßte Materialien aus den Polymeren wiesen gute dielektrische und mechanische Eigenschaften auf.
    Notes: Thermostable high molecular weight poly(benzimidazole imides) were obtained by the reaction of bis-benzimidazoles with bis-maleimides at 110 to 120°C in DMF in presence of carboxylic acids. The polymers are light-coloured compounds, soluble in amidic solvents, DMSO, formic and sulfuric acids. Their structure was identified by elemental analysis and IR spectroscopy. Pressed materials of the polymers proved to possess proper dielectric and mechanical properties.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1988.010390811
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  • 7
    Electronic Resource
    Electronic Resource
    Thermally stable polymers from 1,4,5-naphthalene-tricarboxylic acid and aromatic tetramines (1985)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Chemistry Edition 23 (1985), S. 595-603 
    Details
    ISSN: 0360-6376
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New thermally stable polymers that contained benzimidazole and benzimidazobenzoisoquinoline fragments in polymer chains were synthesized by one-stage cyclopolycondensation of aromatic tetramines (3,3′, 4,4′-tetraminodiphenyl ether, 3,3′,4,4′-tetraminodiphenyl methane, 3,3′,4,4′-tetraminodiphenyl sylfone, and 3,3′-diaminobenzidine) with 1,4,5-naphthalene tricarboxylic acid 4:5-anhydride in polyphosphoric acid and with 1,4,5-naphthalene tricarboxylic acid 4:5-anhydride 1-phenyl ester. All polymers obtained were soluble in concentrated sulfuric acid, 85% phosphoric acid, polyphosphoric acid, methane sylfonic acid. Some were soluble in formic acid. Thermogravimetric analyses indicated that these polymers were stable up to 450-500°C in air. The polymers had good hydrolytic stability.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1985.170230301
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  • 8
    Electronic Resource
    Electronic Resource
    Synthesis and investigation of polyheteroarylenes with benzimidazole cycles (1988)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 39 (1988), S. 429-431 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Poly(benzimidazole) und Poly(amidobenzimidazole) mit Schwefelatomen oder Sulfongruppen in der makromolekularen Kette wurden synthetisiert und untersucht. Als Ausgangsmonomere wurden schwefelhaltige aromatische Tetramine, Diamine und Dicarbonsäuren eingesetzt. Die erhaltenen Polymere haben ausreichend hohe Molekülmassen und sind in den üblichen organischen Lösungsmitteln leicht löslich.
    Notes: Poly(benzimidazoles) and poly(amidobenzimidazoles) containing sulfur heteroatoms or sulfon groups in the macromolecular chain were synthesized and investigated. Sulfur-containing aromatic tetramines, diamines and dicarboxylic acids were used as the initial monomers. The produced polymers have sufficiently high molecular weights and are well soluble in usual organic solvents.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1988.010390808
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  • 9
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    Studies of new biocidal polyguanidines: antibacterial action and toxicity (2020)
    Springer
    Details
    Publication Date: 2020-04-23
    Print ISSN: 0170-0839
    Electronic ISSN: 1436-2449
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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  • 10
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    Synthesis of Aromatic Polyphenylquinazolones (2019)
    Springer
    Details
    Publication Date: 2019-08-01
    Print ISSN: 1070-4272
    Electronic ISSN: 1608-3296
    Topics: Chemistry and Pharmacology
    Published by Springer
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