FLUORINE-CONTAINING ETHER COMPOUND, LUBRICANT FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM

    公开(公告)号:US20230002696A1

    公开(公告)日:2023-01-05

    申请号:US17772043

    申请日:2020-11-06

    Abstract: This fluorine-containing ether compound is represented by formula (1) shown below. R1—CH2—R2—CH2—R3  (1) In formula (1), R2 is a perfluoropolyether chain represented by a formula (2) shown below. R1 is a terminal group that is bonded to R2 via a CH2 group, and is represented by a formula (3) shown below. R3 is bonded to R2 via a CH2 group, is a terminal group having at least one hydroxyl group, and may be the same as, or different from, R1. —(CF2)p-1—O—((CF2)pO)q—(CF2)p-1—  (2) In formula (2), p represents an integer of 2 to 3, and q indicates the average polymerization degree and is a number within a range from 1 to 20. —O(CH2—CH(OH)—CH2—O)2—CH2—(CH2)n,—OH  (3) In formula (3), n represents an integer of 1 to 8.

    FLUORINE-CONTAINING ETHER COMPOUND, LUBRICANT FOR MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING MEDIUM

    公开(公告)号:US20220169941A1

    公开(公告)日:2022-06-02

    申请号:US17437251

    申请日:2020-03-12

    Abstract: This fluorine-containing ether compound is a fluorine-containing ether compound represented by formula (1). R1—X—R2—CH2—R3—CH2—R4  (1) (In formula (1), R1 is an alkenyloxy group of 2 to 8 carbon atoms or an alkynyloxy group of 3 to 8 carbon atoms. R2 is represented by formula (2) shown below. In formula (2), a represents an integer of 1 to 3. X is represented by formula (3) shown below. In formula (3), b represents an integer of 1 to 5, Y is a divalent linking group that is bonded to a carbon atom in formula (2), and R represents an alkyl group of 1 to 6 carbon atoms or H. R3 represents a perfluoropolyether chain. R4 represents a terminal group containing 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 each other via a linking group containing a carbon atom to which a polar group is not bonded.)

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