| 发明名称 |
Low ash lubricants with improved seal and corrosion performance |
| 摘要 |
A lubricant composition of (a) an oil of lubricating viscosity; (b) a dispersant comprising the condensation product of a carboxylic functionalized polymer with an aromatic amine having at least 3 aromatic rings and at least one primary or secondary amino group; and (c) an overbased metal detergent comprising an oil-soluble neutral metal salt component and a metal carbonate component, provides good seal and corrosion performance. The total amount of neutral metal salt component in the lubricant composition is at least about 0.75 percent by weight and the sulfated ash level of the lubricant composition is less than about 1.1 percent. |
| 申请公布号 |
US9399747(B2) |
申请公布日期 |
2016.07.26 |
| 申请号 |
US201113698144 |
申请日期 |
2011.05.17 |
| 申请人 |
The Lubrizol Corporation |
发明人 |
Gieselman Matthew D.;Raguz Mary Galic;Loop John G. |
| 分类号 |
C10M161/00;C10M163/00;C10M135/10;C10M149/16 |
主分类号 |
C10M161/00 |
| 代理机构 |
|
代理人 |
Shold David M.;Gilbert Teresan W. |
| 主权项 |
1. A lubricant composition comprising:
(a) an oil of lubricating viscosity; (b) about 0.6 to about 6 percent by weight of a dispersant comprising the condensation product of a carboxylic functionalized polymer with an aromatic amine having at least 4 aromatic rings and at least one primary or secondary amino group; and (c) an overbased metal detergent comprising an oil-soluble neutral metal salt component and a metal carbonate component; wherein the total amount of neutral metal salt component in the lubricant composition is at least about 1.0 percent by weight and wherein the sulfated ash level of the lubricant composition is less than about 1.1 percent. |
| 地址 |
Wickliffe OH US |
