Compositions containing reaction product of a cyclic compound containing both a nitrogen atom and a carbonyl group, an aldehyde or ketone, and an etheramine

Abstract

The present invention is directed to a composition containing the reaction product of: (A) a cyclic compound containing a 5, 6, or 7-member ring, the ring containing at least one nitrogen and at least one carbonyl group, at least one carbonyl group being adjacent to at least one said nitrogen; (B) an aldehyde or ketone of 1 to about 15 carbon atoms, or a reactive equivalent thereof; and (C) an etheramine represented by the formula R.sup.4 (O(CH.sub.2 CH(R)O).sub.n --R.sup.3 --NH.sub.2).sub.y(C-I) wherein in formula (C-I), each n independently is a number from 0 to about 50; each R independently is selected from the group consisting of hydrogen, hydrocarbyl groups of 1 to about 16 carbon atoms, and mixtures thereof; R.sup.3 is selected from the group consisting of hydrocarbylene groups of about 2 to about 18 carbon atoms and groups represented by the formula ##STR1## wherein R.sup.5 and each R.sup.6 are independently hydrocarbylene groups of about 2 to about 10 carbon atoms and p is a number from 1 to about 4; y is 1, 2 or 3; and R.sup.4 is a hydrocarbyl group having a valence of y and containing 1 to about 50 carbon atoms when y is 1, and 1 to about 18 carbon atoms when y is 2 or 3. These compositions are useful as fuel additives for reducing intake valve deposits and advantageously, they do not contribute to an increase in combustion chamber deposits in port fuel injected internal combustion engines. The invention also relates to concentrates and fuel compositions containing the foregoing fuel additive compositions and to a method for reducing intake valve deposits in an internal combustion engine.

Dependencies are inferred from the claim text.