Invention Grant
- Patent Title: Fullerene compound, lubricant for magnetic recording medium, and magnetic recording medium
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Application No.: US16972813Application Date: 2019-06-10
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Publication No.: US11261395B2Publication Date: 2022-03-01
- Inventor: Tsuyoshi Kato , Kentaro Watanabe , Yasuyuki Ueda
- Applicant: SHOWA DENKO K.K.
- Applicant Address: JP Tokyo
- Assignee: SHOWA DENKO K.K.
- Current Assignee: SHOWA DENKO K.K.
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JPJP2018-111894 20180612
- International Application: PCT/JP2019/022850 WO 20190610
- International Announcement: WO2019/240058 WO 20191219
- Main IPC: C10M103/02
- IPC: C10M103/02 ; C10M105/72 ; G11B5/725 ; C07C57/50 ; C07C65/30 ; C07C225/06 ; C07C305/22 ; C07D487/22 ; C10M105/60 ; C10M105/70 ; C10N20/00 ; C10N40/18
Abstract:
The invention provides a fullerene compound; a lubricant that is for a magnetic recording medium and that contains the fullerene compound; and a magnetic recording medium. The fullerene compound is an ionic liquid that is represented by general formula (1) and is formed from a Bronsted acid (Hn1X) and a Bronsted base ([R2R3)N—]m1—R1); wherein one of the Brønsted acid and the Broønsted base contains a group having a fullerene; and the other contains a perfluoroalkyl chain.
Public/Granted literature
- US20210253968A1 FULLERENE COMPOUND, LUBRICANT FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM Public/Granted day:2021-08-19
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