发明名称 |
Method of preparing overbased lubricating oil additives |
摘要 |
A method of preparing an overbased lubricating oil additive comprising introducing carbon dioxide into a mixture containing (1) an oil-soluble organic acid or a metal salt thereof, which acid or salt includes a hydrocarbon group having 8 to 150 carbon atoms, and (2) an alkaline earth metal compound selected from the group consisting of oxides or hydroxides of alkaline earth metals, at a temperature of higher than about 100 DEG C, in a reaction medium of a lubricating oil, in the presence of a reaction accelerator comprising a dihydric alcohol, a phenol compound and elemental sulfur, thereby to effect complete carbonation; and thereafter removing all of the volatile components contained in the reaction product.
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申请公布号 |
US4057504(A) |
申请公布日期 |
1977.11.08 |
申请号 |
US19760743860 |
申请日期 |
1976.11.22 |
申请人 |
KARONITE CHEMICAL CO., LTD. |
发明人 |
SHIGA, MICHIO;HIRANO, KIMITOSHI;MATSUSHITA, MATSUO |
分类号 |
C10M159/20;C10M159/24;C10N10/04;C10N30/04;C10N30/06;C10N30/08;C10N30/10;C10N40/25;(IPC1-7):C10M1/40;C10M3/34;C10M5/22;C10M7/38 |
主分类号 |
C10M159/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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