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    • 20. 发明授权
    • Production of low fine sediment high TBN phenate stearate
    • 生产低细小沉积物高TBN酚盐硬脂酸酯
    • US5728657A
    • 1998-03-17
    • US869514
    • 1997-06-05
    • Curt B. CampbellChristopher S. Fridia
    • Curt B. CampbellChristopher S. Fridia
    • C10M159/20C10M159/22
    • C10M159/20C10M159/22
    • An overbased phenate stearate is produced by overbasing a mixture that comprises sulfurized phenate, metal stearate (such as calcium stearate), at least one solvent, calcium hydroxide, and water, by contacting the mixture with carbon dioxide in the presence of an alkyl polyhydric alcohol, such as ethylene glycol. The level of agitation is maintained at a level sufficiently high so that all solids are suspended over the length of the overbasing step. The polyhydric alcohol to water ratio is maintained sufficiently high so that the ratio is at least 4:1 at the end of the overbasing step. The overbased mixture is stripped to produce an overbased phenate stearate having less than 0.10 vol. % fine sediments.
    • 通过使含有硫化酚盐,硬脂酸金属盐(例如硬脂酸钙),至少一种溶剂,氢氧化钙和水的混合物过饱和,通过使该混合物与二氧化碳在烷基多元醇的存在下接触来制备高碱性酚盐硬脂酸盐 ,如乙二醇。 搅拌水平保持在足够高的水平,使得所有固体悬浮在高碱性步骤的长度上。 多元醇与水的比率保持足够高,使得在高碱性步骤结束时该比例至少为4:1。 剥去高碱性混合物以制备具有小于0.10体积%的高碱性酚酸酯硬脂酸酯。 %细小的沉积物。