The Preparation of Some Phosphorus Compounds and Their Comparison as Load Carrying Additives by the Four-Ball Machine

Abstract

In this work, a variety of phosphonate esters, N-alkyl ammonium alkyl hydrogen phosphites, and a few phosphinates have been prepared. The compounds prepared were tested as extreme pressure additives at equimolar concentration in mineral oil by the Four-Ball Machine. The ammonium alkyl hydrogen phosphites showed unusual effectiveness in raising the initial seizure load.

A few of the compounds prepared were also tested for antiwear activity.

Presented as an American Society of Lubrication Engineers paper at the ASLE/ASME Lubrication Conference held in Miami Beach, Florida, October 21–23, 1975

Notes

Presented as an American Society of Lubrication Engineers paper at the ASLE/ASME Lubrication Conference held in Miami Beach, Florida, October 21–23, 1975