公开(公告)号：US12264290B2

公开(公告)日：2025-04-01

申请号：US18009221

申请日：2021-06-07

Applicant: SHOWA DENKO K.K.

Inventor： Natsumi Shibata ,  Naoya Fukumoto ,  Tsuyoshi Kato

IPC: C10M107/38 ,  C07C43/13 ,  C08G65/22 ,  C08G65/331 ,  G11B5/725 ,  C10N40/18

Abstract: What is provided is a fluorine-containing ether compound represented by the following formula. R1—CH2—R2—CH2—OCH2CH(OH)CH2O—CH2—R3—CH2—R4 (In the formula, R2 and R3 are perfluoropolyether chains, and R1 and R4 are terminal groups having two or three polar groups, in which individual polar groups are bound to different carbon atoms and the carbon atoms to which the polar groups are bound are bound to each other via a linking group having a carbon atom to which the polar groups are not bound).

公开(公告)号：US11279664B2

公开(公告)日：2022-03-22

申请号：US16082349

申请日：2017-01-30

Applicant: SHOWA DENKO K.K.

Inventor： Daisuke Yagyu ,  Yuta Yamaguchi ,  Naoya Fukumoto ,  Tsuyoshi Kato ,  Shoko Uetake ,  Hiroyuki Tomita ,  Ryuuta Miyasaka ,  Naoko Ito ,  Ichiro Ota ,  Katsumi Murofushi

IPC: C07C43/23 ,  C10M105/54 ,  G11B5/725 ,  C10M107/38 ,  C07C43/178 ,  C07D277/24 ,  C07D303/26 ,  C07D333/16 ,  C07D409/12 ,  G11B5/733 ,  C10N30/06 ,  C10N40/18 ,  C10N50/00

Abstract: The present invention relates to a fluorine-containing ether compound represented by Formula (1), R1—R2—CH2—R3—CH2—R4  (1). (In Formula (1), R1 is an end group including an organic group having at least one double bond or triple bond, R2 is a divalent linking group bonded to R1 by etheric oxygen, R3 is a perfluoropolyether chain, R4 is an end group having two or three polar groups with each polar group being bonded to different carbon atoms, and the carbon atoms, to which the polar groups are bonded, being bonded to each other via a linking group including carbon atoms to which the polar groups are not bonded.)

公开(公告)号：US11261395B2

公开(公告)日：2022-03-01

申请号：US16972813

申请日：2019-06-10

Applicant: SHOWA DENKO K.K.

Inventor： Tsuyoshi Kato ,  Kentaro Watanabe ,  Yasuyuki Ueda

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.

公开(公告)号：US11180457B2

公开(公告)日：2021-11-23

申请号：US16759515

申请日：2018-08-28

Applicant: SHOWA DENKO K.K.

Inventor： Tsuyoshi Kato ,  Daisuke Yagyu ,  Naoya Fukumoto ,  Yuta Yamaguchi ,  Masumi Kuritani ,  Katsumi Murofushi ,  Masaki Nanko ,  Hiroyuki Tomita

IPC: C07D231/12 ,  C07D277/24 ,  C07D333/16 ,  C10M107/24 ,  C10M107/38 ,  C10M107/40 ,  C10M107/46 ,  G11B5/725

Abstract: Provided is a fluorine-containing ether compound capable of forming a lubricant layer having excellent wear resistance even when the thickness is thin, and suitable as a material of a lubricant for a magnetic recording medium. The fluorine-containing ether compound is a compound represented by the following formula (1): R1—R2—CH2—R3—CH2—R4—R5; wherein R3 is a perfluoropolyether chain; R1 is a terminal group bonded to R2; R5 is a terminal group bonded to R4; R1 is an alkenyl group or an alkynyl group; R5 is a group containing a heterocyclic ring; R2 is represented by the following formula (2); R4 is represented by the following formula (3); and a in the formula (2) and b in the formula (3) are each independently an integer of 1 to 3.

公开(公告)号：US10803898B2

公开(公告)日：2020-10-13

申请号：US15664013

申请日：2017-07-31

Applicant: SHOWA DENKO K.K.

Inventor： Naoya Fukumoto ,  Daisuke Yagyu ,  Yuta Yamaguchi ,  Shoko Uetake ,  Tsuyoshi Kato ,  Hiroyuki Tomita ,  Ryuta Miyasaka ,  Katsumi Murofushi

IPC: G11B5/66 ,  G11B5/725 ,  C07D303/28 ,  C07D303/18 ,  C07C43/11 ,  C10M147/04 ,  C08G65/00 ,  C07C43/13 ,  C08G65/26 ,  C10M105/54 ,  C10N20/04 ,  C10N40/18 ,  C10N50/00

Abstract: A fluorine-containing ether compound of the present invention is represented by Formula (1). R1—CH2—R2—CH2—R3  (1) (In Formula (1), R1 is an organic end group having 3 or more carbon atoms which includes two or more polar groups with each polar group being bonded to different carbon atoms and the carbon atoms to which the polar groups are bonded being bonded to each other via a linking group including the carbon atoms which are not bonded to the polar groups, R2 includes a perfluoropolyether chain represented by Formula (3), and R3 is a hydroxyl group or R1) —(CF2)y−1—O—((CF2)yO)z—(CF2)y−1—  (3) (In Formula (3), y represents an integer of 2 to 4, and z represents an integer of 1 to 30).

公开(公告)号：US11661408B2

公开(公告)日：2023-05-30

申请号：US17274702

申请日：2019-08-28

Applicant: SHOWA DENKO K.K.

Inventor： Daisuke Yagyu ,  Naoya Fukumoto ,  Tsuyoshi Kato ,  Katsumi Murofushi

IPC: C07D333/16 ,  G11B5/725 ,  C10M107/38 ,  G11B5/72 ,  C10N40/18

CPC classification number: C07D333/16 ,  C10M107/38 ,  G11B5/7257 ,  G11B5/7266 ,  C10N2040/18

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), r is 1 to 3. In the formula (3), w is 2 or 3.

公开(公告)号：US11479641B2

公开(公告)日：2022-10-25

申请号：US16640145

申请日：2018-08-07

Applicant: SHOWA DENKO K.K.

Inventor： Tsuyoshi Kato

IPC: C08G65/22 ,  C08G65/333 ,  G11B5/725

Abstract: A fluorine-containing ether compound characterized by being represented by the following formula (1): R1—R2—CH2—R3—CH2—R4—R5  (1) In the formula (1), R3 is a perfluoropolyether chain. R2 and R4 are divalent linkage groups having a polar group and may be the same or different. R1 and R5 are bonded to an atom other than a carbon atom of R2 or R4. R1 and R5 are terminal groups composed of an organic group having 1 to 8 carbon atoms and may be the same or different. At least one of R1 and R5 is a chain organic group having 1 to 8 carbon atoms wherein one or more hydrogen atoms of the chain organic group is substituted with a group having an amide bond.

公开(公告)号：US11427779B2

公开(公告)日：2022-08-30

申请号：US16480483

申请日：2018-01-05

Applicant: SHOWA DENKO K.K.

Inventor： Yuta Yamaguchi ,  Daisuke Yagyu ,  Naoya Fukumoto ,  Shoko Uetake ,  Tsuyoshi Kato ,  Hiroyuki Tomita ,  Ryuuta Miyasaka ,  Katsumi Murofushi

IPC: C10M107/46 ,  G11B5/72 ,  G11B5/725 ,  C10N40/18 ,  C07D213/68 ,  C07D231/12 ,  C07D277/24 ,  C07D333/16 ,  C07D409/12 ,  C08G65/333 ,  C08G65/334 ,  C10M107/44

Abstract: A fluorine-containing ether compound represented by Formula (1) is provided. R1—R2—CH2—R3—CH2—R4—R5   (1) (In Formula (1), R1 and R5 each represents a group having a heterocyclic ring and may be the same as or different from each other, R2 and R4 each represents a divalent linking group having a polar group and play be the same as or different from each other, and R3 represents a perfluoropolyether chain.)

公开(公告)号：US11220649B2

公开(公告)日：2022-01-11

申请号：US16480464

申请日：2017-12-04

Applicant: SHOWA DENKO K.K.

Inventor： Naoya Fukumoto ,  Daisuke Yagyu ,  Yuta Yamaguchi ,  Shoko Uetake ,  Tsuyoshi Kato ,  Hiroyuki Tomita ,  Ryuuta Miyasaka ,  Katsumi Murofushi

IPC: C10M105/54 ,  C07C43/178 ,  G11B5/725 ,  C08G65/331 ,  C10M107/38 ,  C10N20/04 ,  C10N30/06 ,  C10N50/00 ,  C10N40/18

Abstract: A fluorine-containing ether compound represented by Formula (1) is provided; R1—R2—CH2—R3—CH2—R4—R5  (1) (In Formula (1), R1 and R5 may be the same as or different from each other and each represents an alkenyl group having 2 to 8 carbon atoms or an alkynyl group having 3 to 8 carbon atoms, R2 and R4 may be the same as or different from each other and each represents a divalent linking group having a polar group, and R3 represents a perfluoropolyether chain, with a proviso that R1 and R2 are, and R4 and R5 are divided due to the presence of an atom other than the carbon atom such as an oxygen atom).

公开(公告)号：US11767483B2

公开(公告)日：2023-09-26

申请号：US17274466

申请日：2019-08-28

Applicant: SHOWA DENKO K.K.

Inventor： Daisuke Yagyu ,  Naoya Fukumoto ,  Tsuyoshi Kato ,  Katsumi Murofushi

IPC: C10M107/38 ,  G11B5/725 ,  C08G65/22 ,  C08G65/331 ,  G11B5/72 ,  C10N40/18 ,  C10N50/08

CPC classification number: C10M107/38 ,  C08G65/226 ,  C08G65/331 ,  G11B5/7257 ,  G11B5/7266 ,  C10M2213/043 ,  C10N2040/18 ,  C10N2050/08

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.