发明名称 |
COMPOSITION CONTAINING A BLOCK COPOLYMER AND A METHOD OF LUBRICATING AN INTERNAL COMBUSTION ENGINE |
摘要 |
The invention provides a lubricating composition containing an oil of lubricating viscosity and a block copolymer. The block copolymer may contain (a) a hydrophobic first block having C1-30 alkyl (meth)acrylic units, wherein at least 50 wt % of the C1-30 alkyl (meth)acrylic units are C12-15 alkyl (meth)acrylic units, and up to 50 wt % of the C1-30 alkyl (meth)acrylic units are C16 20 alkyl (meth)acrylic units, with the proviso that alkyl groups of the C1-30 alkyl (meth)acrylic units have an average total number of carbon atoms of at least 8; and (b) a second block having (meth)acrylic units further having a heteroatom-containing group providing a polar group. The invention further relates to a method of lubricating an internal combustion engine by lubricating the engine with the lubricating composition. The invention further relates to the use of the block copolymer as an emulsifier and/or pour point depressant. |
申请公布号 |
CA2742516(A1) |
申请公布日期 |
2010.05.14 |
申请号 |
CA20092742516 |
申请日期 |
2009.11.03 |
申请人 |
THE LUBRIZOL CORPORATION |
发明人 |
QIN, HAIHU;WANG, YING;BAUM, MARINA;KELLEY, JACK;MOSIER, PATRICK E.;COVITCH, MICHAEL J.;MULLAY, JOHN J. |
分类号 |
C10M145/14;C10M149/02;C10M149/06;C10M151/02;C10M153/02 |
主分类号 |
C10M145/14 |
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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