| US 7,597,726 B2 | ||
| Mannich detergents for hydrocarbon fuels | ||
| Peter W. Hou, Chesterfield, Va. (US); Dennis J. Malfer, Glen Allen, Va. (US); May Duffield Thomas, Richmond, Va. (US); and William J. Colucci, Glen Allen, Va. (US) | ||
| Assigned to Afton Chemical Corporation, Richmond, Va. (US) | ||
| Filed on Jan. 20, 2006, as Appl. No. 11/336,037. | ||
| Prior Publication US 2007/0169408 A1, Jul. 26, 2007 | ||
| Int. Cl. C10L 1/22 (2006.01); C07C 211/33 (2006.01) | ||
| U.S. Cl. 44—415 [44/447; 44/459; 564/305; 564/306; 564/336] | 17 Claims |
| 1. Fuel additive composition, comprising
(a) a Mannich reaction product obtained by reacting (i) a polyamine having at least two amino groups where at least one of
the amino groups is a primary amino group physically-sterically-protected to hinder its ability to participate in the Mannich
reaction via a sterically hindering hydrocarbyl group bonded to the same carbon atom from which the at least one amino group
is bonded, (ii) a hydrocarbyl-substituted hydroxyaromatic compound, and (iii) an aldehyde;
(b) a liquid carrier; and
wherein the polyamine has a structure selected from one of
 wherein R1 and R2 are selected from hydrocarbyl groups.
|