N-Substituted succinimides, their preparation and use as motor fuel additives
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United States of America Patent
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Dec 27, 1983
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N/A
app pub date -
Feb 13, 1981
filing date -
Feb 15, 1980
priority date (Note) -
Expired
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Abstract
N-substituted succinimides are obtained by reacting in a first stage, maleic anhydride with an oxyalkylated or polyoxyalkylated monoalcohol of formula 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 R.sup.2 --X--Z.sub.m NH.sub.2 or a bi-primary amine of the formula 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.
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