A fuel additive composition comprising:
a) a Mannich condensation product of (1) a high molecular weight alkyl-substituted hydroxyaromatic compound (2) an amine having the formula:
1
wherein A is CH or nitrogen, R
1
, R
2
, R
3
are independently hydrogen or lower alkyl of 1 to about 6 carbon atoms and each R
2
and R
3
is independently selected in each —CR
2
R
3
— unit, and x is an integer from 1 to about 6;
and (3) an aldehyde, wherein the respective molar ratio of reactants (1), (2), and (3) is 1:0.1-2:0.1-2;
b) a hydrocarbyl-terminated poly(oxyalkylene) monool; and
c) a carboxylic acid as represented by the formula:
R
4
(COOH)
y
or anhydride thereof, wherein R
4
represents a hydrocarbyl group having about 2 to about 50 carbon atoms, and y represents an integer of 1 to about 4.
一种燃料添加剂组合物,包括
a) 下列物质的曼尼希缩合产物:(1) 高分子量烷基取代的羟基芳香族化合物 (2) 式中的胺:
1
其中 A 是 CH 或氮,R
1
, R
2
, R
3
独立地为氢或 1 至约 6 个碳原子的低级烷基,且每个 R
2
和 R
3
各自独立地选自-CR
2
R
3
- 单元中,且 x 是 1 至约 6 的整数;
和 (3) 醛,其中反应物(1)、(2)和(3)各自的摩尔比为 1:0.1-2:0.1-2;
b) 烃基封端聚氧亚烷基单醇;以及
c) 式中所示的
羧酸:
R
4
(COOH)
y
或其酸酐,其中 R
4
代表具有约 2 至约 50 个碳原子的烃基,y 代表 1 至约 4 的整数。