| 摘要 |
PURPOSE:To enhance surface activity as a dispersant or an emulsifier, by preparing an oligomeric surfactant from a sulfonated compound of an oligomer prepared by polymerizing thermal cracking residual oil obtained from a process for thermal cracking of petroleum. CONSTITUTION:Thermal cracking residual oil of light oil such as naphtha or kerosene is subjected to radical polymerization in the presence of a polymerization initiator such as benzoyl peroxide at a reaction temp. of 50-250 deg.C for a reaction time of 5min-5hr under atmospheric pressure or high pressure to obtain an oligomer with a number average MW of 1,000-50,000. This oligomer is sulfonated at 10-150 deg.C using a sulfonating agent such as sulfuric anhydride or chlorosulfonic acid and the obtained sulfonated compound is neutralized with a neutralizing agent such as sodium hydroxide to obtain an oligomeric surfactant. This surfactant is useful as a dispersant for a coal-water slurry, a cement water reducing agent and a dye dispersant.
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