| 摘要 |
<p>An additive for distillate fuels and a fuel composition having improved wax anti-settling properties. The additive is incorporated into a major proportion of distillate fuel and is a maleic anhydride alpha-olefin copolymer or a imide having the following structurewherein R has at least 60% by weight of a hydrocarbon substituent from about 20 to about 40 carbon atoms, X is oxygen orwherein N is nitrogen and R' has at least 80% by weight of a hydrocarbon substituent having from 16 to 18 carbon atoms, and n is from about 2 to about 8 for the maleic anhydride alpha-olefin copolymer and from about 1 to about 8 for the imide. The additive can be combined with an ethylene vinyl acetate copolymer, ethylene vinyl acetate isobutylene terpolymer, or combinations thereof, to improve cold flow of the distillate fuel.</p> |
