Invention Grant
- Patent Title: Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium
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Application No.: US17274466Application Date: 2019-08-28
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Publication No.: US11767483B2Publication Date: 2023-09-26
- Inventor: Daisuke Yagyu , Naoya Fukumoto , Tsuyoshi Kato , Katsumi Murofushi
- Applicant: SHOWA DENKO K.K.
- Applicant Address: JP Tokyo
- Assignee: Resonac Corporation
- Current Assignee: Resonac Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP 18170364 2018.09.12
- International Application: PCT/JP2019/033697 2019.08.28
- International Announcement: WO2020/054419A 2020.03.19
- Date entered country: 2021-03-09
- Main IPC: C10M107/38
- IPC: C10M107/38 ; G11B5/725 ; C08G65/22 ; C08G65/331 ; G11B5/72 ; C10N40/18 ; C10N50/08

Abstract:
The fluorine-containing ether compound is represented by the following formula (1): R1—R2—CH2—R3—CH2—R4. In the formula (1), R1 is represented by the following formula (2), R2 is represented by the following formula (3), R3 is a perfluoropolyether chain, and R4 is an organic end group different from R1—R2— and contains two or three polar groups, wherein each polar group is bonded to a different carbon atom, and the carbon atoms to which the polar groups are bonded are bonded to one another via a linking group containing a carbon atom to which the polar group is not bonded. In the formula (2), R5 is an alkoxy group selected from the group consisting of a methoxy, an ethoxy and a propoxy group. In the formula (3), w is 2 or 3.
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