Phenothiazine-Type Antioxidants and Their Mode of Action

Abstract

The oxidation inhibition action of phenothiazine-type compounds on lubricating oils has been investigated in a dynamic system over the temperature range 100 to 175 degrees C in the presence of metal catalysts. Many of the compounds indicated activity at the higher temperatures. Resonance-stabilized free radicals, capable of reducing peroxides, were postulated to be the actual inhibiting configurations. It was demonstrated that the inhibitors were of the regenerative rather than the sacrificial class.

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Document Details

Document Type
Technical Report
Publication Date
Jan 18, 1950
Accession Number
AD1211636

Entities

People

  • C. M. Jr Murphy
  • H. Ravner
  • N. L. Smith

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Catalysts
  • Chemical Compounds
  • Free Radicals
  • Inhibition
  • Inhibitors
  • Lubricating Oils
  • Oxidation
  • Oxides
  • Peroxides
  • Phenothiazines
  • Resonance

Readers

  • Combustion science or combustion engineering.
  • Electrical Engineering
  • Polymer Science and Engineering.