发明名称 |
Use of a lubricating oil composition for improving the acrylic rubber sealant compatability in an internal combustion engine |
摘要 |
It has been discovered that a lubricating oil composition containing a certain combination of a nitrogen-containing dispersant and a metal-containing detergent of an alkali metal salt of alkylphenol derivative having a Mannich base structure, together with a phosphorus-containing organic compound, can be effectively employed in a method for improving the acrylic rubber sealant compatibility in an internal combustion engine, if the ratio of the nitrogen-containing dispersant and a metal-containing detergent of an alkali metal salt of alkylphenol derivative having a Mannich base structure is adjusted to a specific range, i.e., in the range of from 1:0.005 to 1:2 in terms of the nitrogen content. |
申请公布号 |
EP1803797(B1) |
申请公布日期 |
2014.12.03 |
申请号 |
EP20060256586 |
申请日期 |
2006.12.27 |
申请人 |
CHEVRON JAPAN LTD. |
发明人 |
TAKEUCHI, YOSHITAKA;YAMASHITA, YOSHITO;NAKAZATO, MORIKUNI |
分类号 |
C10M163/00;C10M159/16;C10N40/25 |
主分类号 |
C10M163/00 |
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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