发明名称 |
Oxidation-inhibitive lubricating oil composition |
摘要 |
<p>A lubricating oil composition which comprises one or more base oils of the group consisting of (A) a mineral oil having a kinematic viscosity of 5-200 m<2>/s at 40 DEG C and an aromatics content of less than 15 percent by weight, (B) an olefinic polymer of 2-16 carbon atoms or its hydride having a number-average molecular weight of 250-4,000, and (C) an alkylbenzene having 1-4 alkyl groups of 1-40 carbon atoms and a total carbon number of said alkyl groups in the range of 6-40, said base oil or oils being blended with a 3-methyl-5-tert-butyl-4-hydroxyphenyl-substituted fatty acid ester in an amount of 0.1-5.0 percent by weight based on total composition. The inventive lubricant composition having such a base oil in combination with the specified fatty acid ester provides a synergistic effect conducive to inhibition or prevention of both oxidation and sludge formation while in use under elevated temperature conditions over extended periods of time.</p> |
申请公布号 |
EP0716142(A2) |
申请公布日期 |
1996.06.12 |
申请号 |
EP19950850222 |
申请日期 |
1995.12.07 |
申请人 |
NIPPON OIL CO. LTD. |
发明人 |
YOSHIDA, TOSHIO;IGARASHI, JINICHI;MATSUYAMA, YOKO |
分类号 |
C10M111/04;C10M169/04;C10N20/02;C10N20/04;C10N30/10;C10N40/12;(IPC1-7):C10M169/04 |
主分类号 |
C10M111/04 |
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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