Oxazoline derivatives as additives useful in oleaginous compositions

Claim 1

A composition comprising a major amount of a liquid hydrocarbon of the class consisting essentially of fuels and lubricating oils and a minor but dispersing amount of a liquid hydrocarbon soluble derivative of the oxazoline reaction product of a substantially saturated aliphatic hydrocarbyl substituted C 4 -C 10 mono-unsaturated dicarboxylic acid material selected from the group consisting of acids, acid anhydrides and esters having at least about 8 carbon atoms in said hydrocarbyl group with from at least 1 to about 2 mole equivalent, per moel equivalent of said dicarboxylic acid material, of a 2,2-disubstituted-2-amino-1-alkanol having 2 to 3 hydroxy groups and containing a total of 4 to 8 carbons, and which is represented by the formula: ##STR7## wherein X is an alkyl or hydroxyl alkyl group, with at least one of the X substituents being a hydroxyl alkyl group of the structure --(CH 2 ) n OH wherein n is 1 to 3, said reaction conditions being at a temperature of from about 140° to 240° C. for from 1/2 to 24 hours whereby at least one carboxylic acyl group is converted into an oxazoline ring, said reaction product being derivatized by reaction with a member of the group consisting of: a. an aliphatic, saturated amine containing 2 to 60 carbon atoms and 1 to 12 nitrogen atoms and of the general formulae: ##STR8## wherein R, R' and R" are independently selected from the group consisting of hydrogen; C 1 to C 12 straight or branched chain alkyl radicals; C 1 to C 12 alkoxy substituted C 2 to C 6 alkylene radicals; C 2 to C 12 hydroxy or amino alkylene radicals; and C 1 to C 12 alkylamino substituted C 2 to C 6 alkylene radicals; s is 2 to 6 and, t is 0 to 10; and, b. a polyol selected from the group consisting of diethylene glycol, pentaerythritol, trimethylol propane, ethylene glycol, propylene glycol, glycol ethyl ether and diethylene glycol ethyl ether.