A T A T zum 60. Geburtstag gewidmet (Eingegangen am 8. M%rz 1965) ZUSAMMENFASSUNG:Mit dem Ziel, Modellsubstanzen fiir Redoxharze aus Hydrochinon, Phenol und Formaldehyd zu erhalten, wurden niedermolekulare, molekulareinheitliche Kondensate dieser Stoffe dargestellt. Das Redoxverhalten dieser Verbindungen mit bivalenten, tetravalenten oder hexavalenten Redoxsystemen wurde potentiometrisch untersucht. Versuche zur theoretischen Deutung der potentiometrischen Titrationskurven, insbesondere der hexavalenten Redoxsysteme, werden beschrieben.
SUMMARY:With the aim to obtain model compounds for redox resins, composed of hydroquinone, phenol, and formaldehyde, low and uniform molecular weight condensates of this type were prepared. The redox characteristics of these divalent, tetravalent, and hexavalent compounds were investigated by potentiometric titration. An approach to interpret the titra-
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