发明名称 |
VISCOSITY INDEX IMPROVER, PROCESS FOR PREPARING THE SAME AND LUBRICATING OIL COMPOSITION |
摘要 |
<p>The present invention relates to a viscosity index improver to be added to lubricating oils and the like. This viscosity index improver contains a graft copolymer having a structural unit formed by an oil-soluble polymer (a) containing an olefin polymer and a structural unit formed by a copolymer (b) of a peroxy bond-containing polymer with a (meth)acrylate and the like or a copolymer (c) of a peroxy bond-containing monomer with 2-hydroxyethyl (meth)acrylate and the like. The viscosity index improver has excellent viscosity index improving property, excellent thickening effect, excellent low-temperature fluidity and excellent shear stability and is also free from the fear of separation in lubricating oils.</p> |
申请公布号 |
EP0872539(A1) |
申请公布日期 |
1998.10.21 |
申请号 |
EP19960937512 |
申请日期 |
1996.11.07 |
申请人 |
NOF CORPORATION |
发明人 |
SUYAMA, SHUJI;HIGUCHI, YOSHIKI;TOCHIGI, HIDEFUMI;OHMURA, HIROSHI |
分类号 |
C10M145/14;C10M145/16;C10M149/04;C10M149/10;C10M157/00;C10M157/04;(IPC1-7):C10M157/10;C10N30/02 |
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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