Abstract:
Lubricating oil compositions containing a copolymer of (1) ethylene, (2) an alkyl ester of an unsaturated monocarboxylic acid and (3) a hydroxyalkyl ester of an unsaturated carboxylic acid exhibit excellent properties relative to thermal stability, viscosity index improvement and dispersant activity.
Abstract:
LUBRICANT COMPOSITION CONTAINING COPOLYMERS HAVING FREE HYDROXYL GROUPS AND DERIVED FROM A COMPOUND COMPRISING A SINGLE POLYMERIZABLE C=C GROUP AND AT LEAST ONE AROMATIC RING WHICH IS INCORPORATED INTO THE MONOMER MIXTURE FROM WHICH THE COPOLYMERS ARE POLYMERIZED HAVE IMPROVED POUR POINTS, VISCOSITY INDICES AND DISPERSANT PROPERTIES.