发明授权
- 专利标题： Viscosity modifier of lubricating oil for power transmission system and lubricating oil composition for power transmission system
- 专利标题（中）： 动力传动系统润滑油粘度调节剂和动力传动系统润滑油组成
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申请号： US11886960申请日： 2006-03-24
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公开(公告)号： US08410035B2公开(公告)日： 2013-04-02
- 发明人: Ryousuke Kaneshige , Akihiro Matsuda , Satoshi Ikeda , Keiji Okada , Masaaki Kawasaki
- 申请人： Ryousuke Kaneshige , Akihiro Matsuda , Satoshi Ikeda , Keiji Okada , Masaaki Kawasaki
- 申请人地址： JP Tokyo US OH Wickliffe
- 专利权人： Mitsui Chemicals, Inc.,The Lubrizol Corporation
- 当前专利权人： Mitsui Chemicals, Inc.,The Lubrizol Corporation
- 当前专利权人地址： JP Tokyo US OH Wickliffe
- 代理机构： Foley & Lardner LLP
- 优先权： JP2005-089004 20050325
- 国际申请： PCT/JP2006/306015 WO 20060324
- 国际公布： WO2006/101206 WO 20060928
- 主分类号： C10M119/02
- IPC分类号： C10M119/02 ; C08F10/06
摘要：
A lubricating oil composition for a power transmission system, which is excellent in both of low-temperature viscosity property and shear stability, is provided. The viscosity modifier of a lubricating oil for a power transmission system according to the present invention comprises an ethylene/α-olefin copolymer (B) having the properties: (B1) an ethylene content in the range of 70 to 85% by mol, (B2) an intrinsic viscosity [η] in the range of 0.2 to 1.0 dl/g, (B3) Mw/Mn not more than 2.4, and (B4) a melting point, as measured by DSC, not higher than 60° C., or no melting point observed.
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