Millen & White
N-Substituted succinimides, their preparation and use as motor fuel additives
 N-substituted succinimides are obtained by reacting in a first stage, maleic anhydride with an oxyalkylated or polyoxyalkylated monoalcohol of formula EQU R.sup.1 --O--A.sub.n OH wherein R.sup.1 is an aliphatic radical having from 12 to 25 carbon atoms, A is an alkylene radical having 2 to 4 carbon atoms and n is an integer from 1 to 50, and by further reacting the reaction product of the first stage either with a monoprimary amine of formula EQU R.sup.2 --X--Z.sub.m NH.sub.2 or a bi-primary amine of the formula EQU H.sub.2 N--Z--NH.sub.p H, wherein R.sup.2 is an aliphatic radical having from 8 to 25 carbon atoms, Z is an alkylene radical having from 2 to 4 carbon atoms, X is --NH-- or --O--, m is an integer from 0 to 4 and p an integer from 2 to 6. The resultant succinimides are useful as anti-rust and detergent additives for motor fuels. 
Elf-France Institut Francais du Petrole
C C C C
C10L C07D C08G C08G
inventional inventional inventional inventional
Paul Choua Bernard
Maldonado Cohen Sillion