Patent ID: 8728995

Claim:
A hydrocarbyl succinimide, comprising a reaction product of (A) a polyalkenyl succinic acid or anhydride compound derived from a polyalkene compound having a number average molecular weight ranging from greater than about 1300 to about 3000 and having greater than about 50 mol % terminal double bond content and an unsaturated acidic reagent, wherein the polyalkenyl compound and acidic reagent are reacted in a mole ratio of acidic reagent to polyalkene of greater than about 1.5:1 to about 2:1 in the absence of sulfonic acid, wherein the succinic acid or anhydride compound, as made, has an activity of greater than 90 wt. % to about 92 wt. % and is devoid of insoluble resin or sediment and (B) a polyamine having at least one basic nitrogen atom.