abstract |
ABSTRACT Lubricating oil dispersants are made by reacting an (a) alkenyl succinic anhydride, (b) an alcohol (e.g. pentaerythritol), (c) a hydroxy-substituted amine (e.g. tris-hydroxymethylaminomethane), (d) a polyoxyalkylene-amine, and (e) alkenyl succinimide. |