Invention Grant
- Patent Title: Electrically-conductive lubricant
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Application No.: US17261302Application Date: 2019-07-16
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Publication No.: US11447711B2Publication Date: 2022-09-20
- Inventor: Yuichiro Haramoto , Shigemasa Itabashi , Ayana Takemura , Kazuo Okamoto , Hiroyuki Otsuki
- Applicant: UNIVERSITY OF YAMANASHI , NIPPON THOMPSON CO., LTD. , Ushio Chemix Corporation
- Applicant Address: JP Yamanashi; JP Tokyo; JP Shizuoka
- Assignee: UNIVERSITY OF YAMANASHI,NIPPON THOMPSON CO., LTD.,Ushio Chemix Corporation
- Current Assignee: UNIVERSITY OF YAMANASHI,NIPPON THOMPSON CO., LTD.,Ushio Chemix Corporation
- Current Assignee Address: JP Yamanashi; JP Tokyo; JP Shizuoka
- Agency: Osha Bergman Watanabe & Burton LLP
- Priority: JPJP2018-133840 20180717,JPJP2018-156580 20180823,JPJP2018-156581 20180823
- International Application: PCT/JP2019/027966 WO 20190716
- International Announcement: WO2020/017509 WO 20200123
- Main IPC: C10M105/18
- IPC: C10M105/18 ; C10N30/00 ; C10N20/00 ; C10N40/02 ; C10N40/18

Abstract:
This is to provide an electrically-conductive lubricant having characteristics in combination that it shows liquid crystallinity in a wide temperature range, retains low dynamic friction coefficient, has electrical-conductivity, has almost no loss due to evaporation, decomposition and the like, has a clean appearance, and emits fluorescence, and can find deterioration or leakage immediately.
This electrically-conductive lubricant comprises at least one kind of the compound (1) represented by the formula (1): 12:8 wherein, R11 and R21 are the same or different from each other, and each is hydrogen or a group —OCH2CH2CH(R′)CH2CH2OR (R is a linear or branched CnH2n+1, 4≤n≤12, and R′ is methyl or ethyl), and R12, R13, R22 and R23 are the same or different from each other, and each is a group —OCH2CH2CH(R′)CH2CH2OR (R is a linear or branched CnH2n+1, 4≤n≤12, and R′ is methyl or ethyl)].
This electrically-conductive lubricant comprises at least one kind of the compound (1) represented by the formula (1): 12:8 wherein, R11 and R21 are the same or different from each other, and each is hydrogen or a group —OCH2CH2CH(R′)CH2CH2OR (R is a linear or branched CnH2n+1, 4≤n≤12, and R′ is methyl or ethyl), and R12, R13, R22 and R23 are the same or different from each other, and each is a group —OCH2CH2CH(R′)CH2CH2OR (R is a linear or branched CnH2n+1, 4≤n≤12, and R′ is methyl or ethyl)].
Public/Granted literature
- US20210348078A1 ELECTRICALLY-CONDUCTIVE LUBRICANT Public/Granted day:2021-11-11
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