| 摘要 |
PURPOSE:To provide a fluidity improver consisting of an ester of an epoxide adduct of a specified compd. having at least two nitrogen atoms and a straight- chain saturated fatty acid, which has a low freezing point and a low crystallization temperature when dissolved in fuel oil and exhibits excellent performance. CONSTITUTION:The fluidity improver consists of an ester of a compd. of formula I [where X is a group of formula II (l is 1-30) or a group of formula III; R5 is a 1-30C aliphatic hydrcarbon group; R0, 1, 2, 3, 4 are shown by formula IV(m is 0-25), V (n is 0-25), VI VII or VIII. At least one of them is of formula VI, VIIor VIII] (e.g. 4mol ethylene oxide adduct of polyethyleneimine) or alkylene oxide (e.g. ethylene oxide), styrene oxide or glycidol adduct of polyethyleneimine, and a straight-chain saturated fatty acid (e.g. palmitic acid). It has a low freezing point and a low crystalliation temperature when dissolved in fuel oil and exhibits excellent fluidity improving performance.
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