Esters of aldehyde/amine adducts, their preparation and use as additives for oleaginous compositions

Abstract From the Canadian patent

Novel ester derivatives of 1-aza-3,7-dioxabicyclo 3.3.0oct-5-yl-methyl alcohol are disclosed which are useful in gasoline as rust inhibitors and carburetor detergents; in automatic transmission fluids as friction modifiers and rust inhibitors: and, in automotive and industrial lubricating oils as sludge dispersants, rust-inhibitors and friction modifiers, the particular use depending on the molecular weight of the ester. These ester derivatives are oil-soluble half ester reaction products of (a) about 1 molar proportion of a hydrocarbylsubstituted C4 to C10 dicarboxylic acid or anhydride having about 6 to about 300 carbon atoms per hydrocarbyl group partly, esterified with the reaction …