发明授权
- 专利标题： Viscosity index improver, process for preparing the same and lubricating oil composition
- 专利标题（中）： 粘度指数改进剂，制备方法和润滑油组合物
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申请号： US68282申请日： 1998-10-05
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公开(公告)号： US6127325A公开(公告)日： 2000-10-03
- 发明人: Shuji Suyama , Yoshiki Higuchi , Hidefumi Tochigi , Hiroshi Ohmura
- 申请人： Shuji Suyama , Yoshiki Higuchi , Hidefumi Tochigi , Hiroshi Ohmura
- 申请人地址： JPX
- 专利权人： NOF Corporation
- 当前专利权人： NOF Corporation
- 当前专利权人地址： JPX
- 优先权： JPX7-288896 19951107
- 主分类号： C10M145/14
- IPC分类号： C10M145/14 ; C10M145/16 ; C10M149/04 ; C10M149/10 ; C10M157/00 ; C10M157/04 ; C10M145/22 ; C10M145/24 ; C10M145/18 ; C08L33/14 ; C08L29/00
摘要：
A viscosity index improver for addition to lubricating oil or the like, which comprises a graft copolymer having structural units of an oil-soluble polymer (a) comprising an olefin polymer and structural units of a copolymer (b) of a monomer having a peroxide bond with a (meth)acrylate or the like or a copolymer (c) of a monomer having a peroxide bond with 2-hydroxyethyl(meth)acrylate or the like. The improver is excellent in the effect of improving the viscosity index, the thickening effect, the fluidity at low temperatures and the shear stability, and has no fear of causing phase separation in lubricating oil.
公开/授权文献
- USD391933S Computer display 公开/授权日：1998-03-10
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