Invention Grant
- Patent Title: Fluorine-containing ether compound, lubricant for magnetic recording media, and magnetic recording medium
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Application No.: US16644586Application Date: 2018-08-23
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Publication No.: US11261394B2Publication Date: 2022-03-01
- Inventor: Tsuyoshi Kato , Daisuke Yagyu , Naoya Fukumoto , Masaki Nanko , Masumi Kuritani , Katsumi Murofushi
- 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: JPJP2017-176030 20170913
- International Application: PCT/JP2018/031161 WO 20180823
- International Announcement: WO2019/054148 WO 20190321
- Main IPC: C10M105/54
- IPC: C10M105/54 ; G11B5/73 ; C07C43/23 ; C07D333/16 ; C10N40/18

Abstract:
A fluorine-containing ether compound represented by R1—R2—CH2—R3—CH2—R4—R5 is provided. (R3 is a perfluoropolyether chain; R1 and R5 are each independently any one of an alkyl group that may have a substituent, an organic group having at least one double bond or at least one triple bond, and a hydrogen atom; and —R2—CH2—R3 is represented by Formula (2), and R3—CH2—R4— is represented by Formula (3)) -[A]-[B]—O—CH2—R3 (2) R3—CH2—O—[C]-[D]- (3) ([A] is represented by Formula (4), [B] is represented by Formula (5), [C] is represented by Formula (6), [D] is represented by Formula (7), and in the formula, a and b are integers of 0 to 2, c is an integer of 2 to 5, d and f are integers of 0 to 2, and e is an integer of 2 to 5, and at least one of b and d in the formula is 1 or more)
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