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：US11661478B2

公开(公告)日：2023-05-30

申请号：US16489931

申请日：2018-02-06

Applicant: SHOWA DENKO K.K.

Inventor： Takuya Minami ,  Yoshishige Okuno ,  Yuta Yamaguchi ,  Ryuuta Miyasaka ,  Naoya Fukumoto ,  Hiroko Hattori ,  Hiroyuki Tomita ,  Michio Seri ,  Naoko Ito ,  Ichiro Ota ,  Katsumi Murofushi

IPC: C08G65/331 ,  C08G65/333 ,  C10M107/38 ,  G11B5/725 ,  C10N40/18

CPC classification number: C08G65/331 ,  C08G65/333 ,  C10M107/38 ,  G11B5/7257 ,  C10N2040/18

Abstract: A fluorine-containing ether compound of the present invention is represented by the following General Formula (1). (In the General Formula (1), X is a trivalent atom or a trivalent atom group, A is a linking group including at least one polar group, B is a linking group having a perfluoropolyether chain, and D is a polar group or a substituent having a polar group at the end.)

[Chem. 1]

XA-B-D)3  (1)

公开(公告)号：US11555005B2

公开(公告)日：2023-01-17

申请号：US16489896

申请日：2018-02-08

Applicant: SHOWA DENKO K.K.

Inventor： Naoya Fukumoto ,  Ryuuta Miyasaka ,  Hiroyuki Tomita ,  Michio Seri ,  Naoko Ito ,  Katsumi Murofushi

IPC: C07C43/13 ,  C08G65/337 ,  G11B5/725 ,  C10M107/38

Abstract: A fluorine-containing ether compound according to the present invention is a fluorine-containing ether compound represented by the following General Formula (1).

公开(公告)号：US11332686B2

公开(公告)日：2022-05-17

申请号：US16470713

申请日：2017-11-24

Applicant: SHOWA DENKO K.K.

Inventor： Naoya Fukumoto ,  Yuta Yamaguchi ,  Naoko Ito ,  Katsumi Murofushi

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

Abstract: A fluorine-containing ether compound represented by formula (1) shown below. R4—CH2—R3—CH2—R2—CH2—R1—CH2—R2—CH2—R3—CH2—R4  (1) (In formula (1), R1 and R3 represent different perfluoropolyether chains, R2 represents a linking group containing one or more polar groups, and R4 represents a terminal group containing two or more polar groups.)

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：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.

公开(公告)号：US11514945B2

公开(公告)日：2022-11-29

申请号：US16489919

申请日：2018-02-20

Applicant: SHOWA DENKO K.K.

Inventor： Hiroyuki Tomita ,  Hiroko Hattori ,  Naoya Fukumoto ,  Ryuuta Miyasaka ,  Naoko Ito ,  Ichiro Ota ,  Katsumi Murofushi

IPC: G11B5/84 ,  G11B5/72 ,  C08G65/332 ,  C08G65/333 ,  C10M107/38 ,  G11B5/725

Abstract: A lubricant for a magnetic recording medium capable of forming a lubricant layer having excellent adhesion to a protective layer is provided. A lubricant for a magnetic recording medium contains a fluorine-containing ether compound in which a group having an ethylenic carbon-carbon double bond is disposed at one or both terminals of a perfluoroalkyl polyether chain. It is preferable that the group having the ethylenic carbon-carbon double bond is disposed at one terminal of the perfluoroalkyl polyether chain, and a hydroxyl group is disposed at other terminal. It is preferable that the lubricant for a magnetic recording medium contains a compound in which one or more functional groups selected from a hydroxyl group, an amino group, an amido group and a carboxyl group is disposed at one or both terminals of a perfluoroalkyl polyether chain.

公开(公告)号：US11126695B2

公开(公告)日：2021-09-21

申请号：US16666643

申请日：2019-10-29

Applicant: SHOWA DENKO K.K.

Inventor： Takuya Minami ,  Yoshishige Okuno ,  Katsumi Murofushi ,  Toshio Fujita

IPC: G06F17/18 ,  G06N20/00

Abstract: A polymer design device according to an embodiment of the present disclosure receives a requirement for a target physical property of a desired polymer, and acquires structural information of polymers. For each polymer corresponding to the acquired structural information, the polymer design device estimates physical property information of the polymer including a mean value and a standard deviation, based on the structural information of the polymer and a regression model, and calculates a score of the polymer based on the requirement for the target physical property and based on the mean value and the standard deviation. From among the acquired structural information of the polymers, the polymer design device selects at least one polymer as the desired polymer, based on the score of each of the polymers, and outputs information of the selected at least one polymer.

公开(公告)号：US11011200B2

公开(公告)日：2021-05-18

申请号：US15640729

申请日：2017-07-03

Applicant: SHOWA DENKO K.K.

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

IPC: G11B5/725 ,  C10M107/38 ,  C07C43/13 ,  C07C43/23 ,  C10M105/54 ,  C10N30/06 ,  C10N40/18 ,  C10N50/00 ,  C07D303/28

Abstract: This fluorine-containing ether compound is represented by Formula (1). R1—R2—CH2—R3—CH2—R4—R5  (1) (in Formula (1), R1 is an aryl group or an aralkyl group, R2 is a divalent linking group having 0 or 1 polar group, R3 is a perfluoropolyether chain, R4 is a divalent linking group having 2 or 3 polar groups, and R5 is an aryl group or an aralkyl group.)