| 发明名称 | Lubricant compositions containing a functionalized dispersant | ||
| 摘要 | An engine lubricant composition, a method for maintaining the soot or sludge handling capability of an engine lubricant while not adversely affecting elastomeric seal material in the engine and a method of operating an engine. The engine lubricant includes a base oil and a dispersant. The dispersant is a reaction product of A) a hydrocarbyl-dicarboxylic acid or anhydride, B) a polyamine, C) a dicarboxyl-containing fused aromatic compound, and D) a non-aromatic dicarboxylic acid or anhydride. | ||
| 申请公布号 | US8927469(B2) | 申请公布日期 | 2015.01.06 |
| 申请号 | US201213549697 | 申请日期 | 2012.07.16 |
| 申请人 | Afton Chemical Corporation | 发明人 | Mathur Naresh;Lagona Jason A. |
| 分类号 | C10M159/12 | 主分类号 | C10M159/12 |
| 代理机构 | Luedeka Neely Group, P.C. | 代理人 | Luedeka Neely Group, P.C. |
| 主权项 | 1. An engine lubricant composition comprising a base oil and a dispersant comprising a reaction product of A) a hydrocarbyl-dicarboxylic acid or anhydride having a number average molecular weight of from about 500 to about 5000, B) a polyamine, C) a dicarboxyl-containing fused aromatic compound or anhydride thereof, and D) a non-aromatic dicarboxylic acid or anhydride having a number average molecular weight of less than about 500. | ||
| 地址 | Richmond VA US | ||