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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 238 (1996), S. 119-127 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Durch Umsetzung von 2,2′-[Methylenbis(nitrilomethylidyn)]diphenol mit Toluylen-2,4-diisocyanat und Phenylisocyanat wurden neue Azomethin-Urethanverbindungen hergestellt, nämlich ein Polymeres bzw. dessen Modellverbindung. Die Produkte wurden mittels Elementaranalyse, IR- und NMR-Spektroskopie sowie Thermogravimetrie, DSC und Viskosimetrie charakterisiert. Beim Erhitzen dieser Verbindungen finden Umlagerungen statt, wobei sowohl Additions- als auch Kondensationsreaktionen ablaufen können, die zur Bildung thermostabiler Produkte, wahrscheinlich mit Hexahydrotriazin-Strukturen, führen.
    Notes: New azomethine-urethanic compounds were synthesized, starting from 2,2′-[methylenebis(nitrilomethylidyne)]diphenol and phenylisocyanate for the model compound and tolylene-2,4-diisocyanate for the polymer. The products were characterized by elemental analysis, IR and NMR spectroscopy as well as thermogravimetry, DSC and viscosimetry. Through heating, these compounds suffer chemical modification, both addition and condensation reactions being possible. Thermogravimetric studies have evidenced the formation of thermostable products, possibly due to hexahydrotriazinic structures resulted from the thermal treatment.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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