| abstract |
An oil soluble dispersant additive useful in oleaginous compositions selected from fuels and lubricating oils comprising the reaction products of:(i) at least one intermediate adduct comprised of the reaction products of(a) at least one polyanhydride, and(b) at least one member selected from the group consisting of polyamines, polyols, and amino alcohols; and(ii) at least one member selected from the group consisting of(a) at least one long chain hydrocarbyl substituted C₄ - C<sub>10</sub> dicarboxylic acid producing material, or(b) at least one long chain hydrocarbyl substituted hydroxy aromatic material and at least one aldehyde. Also disclosed are oleaginous compositions, particularly lubricating oil compositions, containing these oil soluble dispersants. |