Invention Grant
- Patent Title: Conductive lubricating oil composition and spindle motor
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Application No.: US16161471Application Date: 2018-10-16
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Publication No.: US10563149B2Publication Date: 2020-02-18
- Inventor: Ryuji Terauchi , Yuji Hagiwara
- Applicant: Cosmo Oil Lubricants Co., Ltd. , Nidec Corporation
- Applicant Address: JP Tokyo JP Kyoto
- Assignee: Cosmo Oil Lubricants Co., Ltd.,Nidec Corporation
- Current Assignee: Cosmo Oil Lubricants Co., Ltd.,Nidec Corporation
- Current Assignee Address: JP Tokyo JP Kyoto
- Agency: Banner & Witcoff, Ltd.
- Priority: JP2017-202533 20171019
- Main IPC: C10M169/04
- IPC: C10M169/04 ; C10M105/34 ; C10M133/12 ; C10M129/10 ; C10M135/10

Abstract:
A conductive lubricating oil composition including at least one lubricating base oil selected from the group consisting of compounds represented by the following General Formula (1) and compounds represented by the following General Formula (2), and at least one conductivity imparting agent selected from the group consisting of potassium trifluoromethanesulfonate, lithium trifluoromethanesulfonate, lithium nonafluorobutanesulfonate, lithium bis(trifluoromethanesulfonyl)imide, potassium bis(trifluoromethanesulfonyl)imide, and lithium tris(trifluoromethanesulfonyl)methide, in an amount of from 0.01% by mass to 1% by mass, and having a rate of change in conductivity after storage at 120° C. for 200 hours of 10% or less. The definitions of R1, R2, m and n in the formulae are as indicated in the specification. Cases of m−n=2 are excluded.
Public/Granted literature
- US20190119598A1 Conductive Lubricating Oil Composition and Spindle Motor Public/Granted day:2019-04-25
Information query
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