| 摘要 |
PURPOSE: Additive compositions are provided to improve cold flow characteristics in fuel oils. The additive compositions are effective in fuel oils having a 90-20 % boiling temperature range as measured in accordance with ASTM D-86 of more than 115 deg.C, and a final boiling point of more than 370 deg.C. CONSTITUTION: The additive composition comprises (a) at least one oil-soluble hydrogenated block diene polymer comprising at least one crystallization block which is obtainable by end-to-end polymerization of a linear diene, and at least one non-crystallizable block being obtainable by 1,2-configuration polymerization of a linear diene by polymerization of a branched diene or by a mixture of such polymerizations; (b) at least one ethylene-unsaturated ester compound; and (c) at least one comb polymer.
|
