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  • Polymer and Materials Science  (1)
  • Marginal Contribution
  • 1970-1974  (1)
  • 1970  (1)
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  • Polymer and Materials Science  (1)
  • Marginal Contribution
  • Chemistry  (1)
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  • 1970-1974  (1)
Year
  • 1
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 135 (1970), S. 131-135 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Di-2-cyanoisopropylperoxide is formed when azobisisobutyronitrile is decomposed under oxygen in isobutyronitrile as a solvent. The yield amounts to ca. 5%. Thermal decomposition of the peroxide occurs with measurable rate only above 120°C by a first order reaction. The energy of activation in cumene as a solvent was found to be 37.9 kcal · mole-1. The rate constant of the decomposition reaction at 140°C amounts to 0.057 h-1 in cumene, to 0.073 h-1 in tert-butylbenzene, to 0.18 h-1 in chlorobenzene, and to 0.23 h-1 in o-dichlorobenzene.
    Notes: Das Di-2-cyanoisopropylperoxid entsteht in etwa 5-proz. Ausbeute bei der Zersetzung von Azoisobuttersäredinitril unter Sauerstoff in Isobutyronitril als Lösungsmittel. Thermisch zerfällt das Peroxid est oberhalb von 120°C mit meßbarer Geschwindigkeit in einer Reaktion erster Ordnung. Die Aktivierungsenergie, in Cumol als Lösungsmittel, wurde zu 37,9 kcal · mol-1 bestimmt. Werte für die Zerfallskonstante bei 140°C sind in Cumol 0,057 h-1, in tert-Butylbenzol 0,073 h-1, in Chlorbenzol 0,18 h-1 und in o-Dichlorbenzol 0,23 h-1.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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