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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 50 (1976), S. 15-20 
    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: Die o- und p-Phenylendioxydiessigsäuren (o-, p-PhDDA) geben mit 1,6-Hexamethylen(HMDI)-, 2,4-Toluylen(TDI)-, 4,4′-Dibenzyl(DBDI)- und 1,5-Naphthylen(NDI)-diisocyanaten Polyadditionsreaktionen, wobei sie unter Abgabe von CO2 schließlich Polyamide bilden. Diese Synthesen wurden auf Grund vorausgehender Untersuchungen der Reaktivität von o- und p-PhDDA mit Arylisocyanaten ausgeführt, wobei sich N,N′-disubstituierte Diamide bildeten. Beide Produkte weisen im IR-Spektrum die charakteristischen VCO-und VNH- Vibrationsbanden auf. Für die Polymeren wurden die Grenzviskositätszahlen bestimmt und die Thermogramme aufgenommen.
    Notes: o- and p-Phenylenedioxydiacetic acid (o-, p-PhDDA) undergo in presence of 1,6-hexamethylene (HMDI)-,2,4-toluylene (TDI)-,4,4′-dibenzyl (DBDI)- and 1,5-naphthylene (NDI)-diisocyanates polyaddition reactions. These reactions being accompanied by CO2 evolution finally give polyamides. These syntheses were carried out based on preliminary studies regarding the reactivity of o- and p-PhDDA with aromatic isocyanates. When o- and p-PhDDA acids react with aromatic isocyanates N,N′.-disubstituted diamides are formed. Both reaction partners show bands in their IR-spectra characteristic to VCO and VNH. The intrinsic viscosities of some polymers were measured and thermogravimetric curves were obtained.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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