| 摘要 |
PURPOSE:To provide the titled depressant for addition in the storage of carbonaceous fine particle-oil slurry, comprising each specific polyether compound (derivative) and polyamine fatty acid. CONSTITUTION:The objective depressant comprising (A) a polyether compound (derivative) with a molecular weight 1,000-1,000,000 prepared by adding alkylene oxide to 5-300N polyamine (derivative) and (B) a polyamine fatty acid amide prepared by reaction between 6-30C fatty acid and 2-30N polyamine in the weight ratio A/B pref. 97/3-10/90. Preferably, the amount of this depressant to be added to carbonaceous fine particle-oil slurry is such as to be ca. 0.01-2(esp. 0.1-1)wt%.
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