POLYNUCLEAR AROMATIC COMPOUNDS FOR HIGH TEMPERATURE LUBRICANTS

Abstract

The program of investigation of the class of aryl phosphate esters was continued. These materials possessed the most promising high temperature properties of those examined. The aryl groups found to be the most thermally stable were phenyl, fluoro- and chiorophenyl, m-trifluoro-, m ethyiphenyl, 4-biphenylyl, dimethyiphenyl, 5-indanyl and naphthyl. The simple phosphate structure was found to be quite stable. Pyrophosphates had the drawbacks of mediocre thermal and hydrolytic stability, although apparently possessing good oxidative stability. Compositions prepared by reacting two or three different phenols with the proper amount of POCl3 were also investigated. These compositions exhibited markedly lessened tendency to crystallization. Many of the compositions possessed properties almost identical to pure compounds having equivalent phenol proportions, and had the advantage of greater ease of preparation.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1956
Accession Number
AD0101273

Entities

People

  • Charles F. Raley Jr

Organizations

  • Southwest Research Institute

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Aromatic Compounds
  • Barometric Pressure
  • Benzene
  • Boiling Point
  • Chemical Reaction Properties
  • Chemical Synthesis
  • Chemistry
  • Flash Point
  • Materials
  • Materials Laboratories
  • Melting Point
  • Molecular Weight
  • Organophosphates
  • Physical Properties
  • Thermal Stability
  • Viscosity

Fields of Study

  • Chemistry

Readers

  • Organic Chemistry
  • Petroleum Engineering