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  • 1975-1979  (3)
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Year
  • 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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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 83 (1979), S. 47-55 
    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: Monomere der Gruppe des in 3 und 3,6 substituierten Allylcarbazols wurden mit Initiatoren wie AIBN, BP und DTBP in Lösung und in Substanz polymerisiert. Die besten Ergebnisse bezüglich der Leistung wurden mit DTBP erzielt. Die Polymeren wurden mittels IR-und NMR-Spektren sowie DTA charakterisiert. Aus der Reihe der synthetisierten Polymeren ist das Poly(N-allyl-3-chlorcarbazol) durch den hohen Schmelzpunkt und die gute Thermostabilität bemerkenswert.
    Notes: The monomers with substituted allyl-carbazole groups were submitted to radical polymerization both in solution and in bulk using AIBN, BP and DTBP as initiators. So 3- and 3,6-substituted polyallylcarbazole oligomers were obtained; their melting points and yields were a function of the used initiator and the reaction conditions. The recorded IR and NMR spectra permitted to establish some common spectral characteristics of the whole class of polymers. Based on thermodifferential analysis the behaviour under heating was studied. In the series of polymers, the poly(N-allyl-3-chlorocarbazole) showed the best thermal stability.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Acta Polymerica 30 (1979), S. 700-704 
    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: The synthesis of statistical copolyamides of aliphatic and aromatic type with various proportions of cycloaliphatic monomers (trans-cyclopropane dicarboxylic acid) is presented. For the obtained products the thermal, solubility and structural properties were determined. The results showed that the presence of cycloaliphatic units in the copolyamide chain have a very similar influence on the polymer properties as aromatic monomers.
    Notes: Die Synthese statistischer Copolyamide von aliphatischen und aromatischen Typ mit unterschiedlichen Anteilen cycloaliphatischer Monomere (trans-Cyclopropandicarboxylsäure) wird beschrieben. Die erhaltenen Produkte wurden hinsichtlich ihrer Struktur und der thermischen Eigenschaften analysiert. Die Ergebnisse zeigen, daß die Einführung cycloaliphatischer Einheiten auf die Eigenschaften der Polymere eine ähnliche Wirkung hat wie aromatische Monomere.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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