Inventors:
Raymond F. Watts - Long Valley NJ, US
Keith R. Gorda - Little York NJ, US
Kerry L. Cogen - Flemington NJ, US
International Classification:
C10M 145/00
C08F 26/06
Abstract:
Lubricating oil compositions having excellent friction stability comprise a base lubricating oil, an oil soluble source of phosphorus and a defined polyalkylene polyamine-based friction modifier that has been reacted with a borating agent to convert at least one secondary amine group into the corresponding boric acid ester or boric acid salt.