发明名称 |
MARINE ENGINE LUBRICATION |
摘要 |
Lubricant additives comprising as overbased metal hydrocarbyl-substituted hydroxybenzoate detergent dispersed in diluent and a polyalkenyl-substituted carboxlic acid anhydride dispersed in a diluent oil containing 50 mass % or more of a basestock containing greater than or equal to 90% saturates and less than or equal to 0.03% sulphur or a mixture thereof are blended, in minor amounts, with a high saturates content oil of lubricating viscosity, in a major amount, to give trunk piston marine engine lubricating oil composition for a medium-speed four-stroke compression-ignited marine engine. |
申请公布号 |
US2014221261(A1) |
申请公布日期 |
2014.08.07 |
申请号 |
US201414174884 |
申请日期 |
2014.02.07 |
申请人 |
Infineum International Limited |
发明人 |
Dodd James C.;Bradley-Shaw Joshua L. |
分类号 |
C10M141/02 |
主分类号 |
C10M141/02 |
代理机构 |
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代理人 |
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主权项 |
1. A method of preparing a trunk piston marine engine lubricating oil composition for a medium-speed four-stroke compression-ignited marine engine comprising blending (A) a lubricant additive, in a minor amount, comprising an overbased metal hydrocarbyl-substituted hydroxybenzoate detergent dispersed in diluent and (B) an additive comprising a polyalkenyl-substituted carboxylic acid anhydride as active ingredient dispersed in a diluent oil containing 50 mass % or more of a basestock containing greater than or equal to 90% saturates and less than or equal to 0.03% sulphur or a mixture thereof with (C) an oil of lubricating viscosity in a major amount that comprises 50 mass % or more of a basestock containing greater than or equal to 90% saturates and less than or equal to 0.03% sulphur. |
地址 |
Abingdon GB |