Tribological study of a mannich compound of 2-mercaptobenzimidazole in liquid paraffin

Tribological study on a 12.7 mm diameter steel ball bearing specimen has been carried out in a four-ball machine using a potentially active heterocyclic additive in liquid paraffin. The synthesis of 2-(di-n-butylaminomethyl) thiobenzimidazole is described. The 2-(di-n-butylaminomethyl) thiobenzimidazole has been found to be quite effective as a potential additive in liquid paraffin according to the results. Employing X-ray photoelectron spectroscopy, the film formed when the additive reacted with the metal was investigated.