| 摘要 |
<p>The present invention provides a composition comprising: (a) a hydrocarbon fluid; and (b) a dispersant/detergent comprising the structure of Formula (1): (E) p -Z Formula (1), wherein Z is a residue of a polyamine or polyimine; E is (i) a residue of a polyester having a free carboxylic acid group, or (ii) a residue of a hydrocarbyl-substituted acylating agent, with the proviso that if E is the hydrocarbyl-substituted acylating agent, Z is a polyimine, and wherein when E is the hydrocarbyl-substituted acylating agent, the composition has a phosphorus content of 0 ppm to 650 ppm. The invention further provides a use for the composition.</p> |
