Accession Number:

AD0101273

Title:

POLYNUCLEAR AROMATIC COMPOUNDS FOR HIGH TEMPERATURE LUBRICANTS

Descriptive Note:

Rept. for Nov 1954-Dec 1955

Corporate Author:

SOUTHWEST RESEARCH INST SAN ANTONIO TX

Personal Author(s):

• Raley, Charles F., Jr

Report Date:

1956-05-01

Pagination or Media Count:

55.0

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.

Descriptors:

• *ARYL RADICALS
• *LUBRICANTS
• THERMAL STABILITY
• AROMATIC COMPOUNDS
• HYDROLYSIS
• PHENOLS
• MONOCYCLIC COMPOUNDS

Subject Categories:

• Lubricants and Hydraulic Fluids

Distribution Statement:

APPROVED FOR PUBLIC RELEASE