公开(公告)号：US20240203453A1

公开(公告)日：2024-06-20

申请号：US18285527

申请日：2022-04-06

Applicant: Resonac Corporation

Inventor： Natsumi SHIBATA ,  Naoya FUKUMOTO ,  Ayano ASANO ,  Tsuyoshi KATO ,  Takuma KURODA ,  Daisuke YAGYU ,  Chizuru KASAHARA ,  Yutaka TANJI

IPC: G11B5/725 ,  C08G65/22 ,  C10M107/38 ,  C10N40/18 ,  C10N50/00

CPC classification number: G11B5/7257 ,  C08G65/226 ,  C10M107/38 ,  C10M2213/0606 ,  C10N2040/18 ,  C10N2050/025

Abstract: The present invention provides a fluorine-containing ether compound represented by the following formula.


R1—CH2—R2—CH2—R3—CH2—R4—CH2—R5—CH2—R6—CH2—R7

(In Formula (1), R2, R4, and R6 are perfluoropolyether chains, R3 is Formula (2), R5 is Formula (3), and R1 and R7 are each independently a terminal group 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 containing a carbon atom to which no polar group is bound).

公开(公告)号：US20240158711A1

公开(公告)日：2024-05-16

申请号：US18230584

申请日：2023-08-04

Applicant: Western Digital Technologies, Inc.

Inventor： Xingliang He ,  Jianming Wen ,  Charles Cheng-Hsing Lee

IPC: C10M107/38 ,  C08G65/26 ,  G11B5/012

CPC classification number: C10M107/38 ,  C08G65/2612 ,  G11B5/012 ,  C10M2213/0606 ,  C10N2040/18

Abstract: An aromatic or aromatic-like group(s) containing lubricant configured to be adsorbed by a magnetic recording media is formed from


(Ar)m(R1oRfR2p)q

where Ar is an aromatic group, polyaromatic hydrocarbon (PAH), annulene, cycloalkane or heterocycle, m=1-10, R1 and R2 are moieties containing first and second polar groups, respectively, Rf is a perfluorinated polyether, o=1-10, p=0-10, and q=1-10. The first or second polar group may independently be hydroxyl, phosphonic acid, silanol or carboxylic acid. In an embodiment, the lubricant has the formula:




where Ar is a system form d from a PAH, armulene, cycloalkane or heterocycle, X, Y and Z can independently be hydroxyl, a phosphonic acid moiety, a silanol or a carboxylic acid moiety, and where Rf may be CF2O(CF2CF2)nCF2— where n is 1 to 100. Synthesizing the lubricant may entail reacting parabromophenol with (Ar)m(R1oRfR2p)q.

公开(公告)号：US20230257521A1

公开(公告)日：2023-08-17

申请号：US17630594

申请日：2020-07-10

Applicant: SHOWA DENKO K.K.

Inventor： Naoya FUKUMOTO ,  Daisuke YAGYU ,  Tsuyoshi KATO ,  Katsumi MUROFUSHI

IPC: C08G65/337 ,  G11B5/725 ,  C10M107/38 ,  C10N40/18

CPC classification number: C08G65/337 ,  C10M107/38 ,  G11B5/7257 ,  C10M2213/0606 ,  C10N2040/18

Abstract: A fluorine-containing ether compound represented by the following formula (1) is provided.





(In the formula (1), R1 is an alkoxy group having 1 to 10 carbon atoms, R2 is a perfluoropolyether chain, R3 is —OCH2CH(OH)CH2O(CH2)mOH (m in the formula is an integer of 2 to 4).)

公开(公告)号：US20230242829A1

公开(公告)日：2023-08-03

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 ,  C08G65/331 ,  C08G65/22 ,  C07C43/13 ,  G11B5/725

CPC classification number: C10M107/38 ,  C07C43/137 ,  C08G65/226 ,  C08G65/3318 ,  G11B5/7257 ,  C10M2213/043 ,  C10N2040/18

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：US20240254403A1

公开(公告)日：2024-08-01

申请号：US18574225

申请日：2022-06-27

Applicant: Resonac Corporation

Inventor： Masaki NANKO

IPC: C10M107/38 ,  C08G65/26 ,  C10M171/04 ,  C10N20/04 ,  C10N40/18

CPC classification number: C10M107/38 ,  C08G65/2639 ,  C10M171/04 ,  C08G2650/48 ,  C10M2213/0606 ,  C10N2020/04 ,  C10N2040/18

Abstract: The present invention provides a fluorine-containing ether compound that can form a lubricating layer which has excellent wear resistance even if the thickness is thin and in which a decrease in film thickness due to spin-off is less likely to occur. The fluorine-containing ether compound is represented by the following formula. R1—R2—O—CH2—R3—CH2—O—R4—R5 (R3 is a perfluoropolyether chain. R1 and R5 are either an alkyl group which may have a substituent or a hydrocarbon group having a double bond or triple bond. R2 and R4 are each a divalent linking group containing one or more heteroatoms, and have one or more polar groups, and the terminal end on the side bonded to R1 and R5 is a heteroatom. At least one of R2 and R4 contains one or more secondary amine structures. At least one of R1—R2— and —R4—R5 contains one or more cyano groups).

公开(公告)号：US11976690B2

公开(公告)日：2024-05-07

申请号：US17765178

申请日：2020-09-29

Applicant: Bifröst Research and Development B.V.

Inventor： Stefan George Emile Lampaert ,  Ronald Adrianus Johannes Van Ostayen ,  Maarten Cornelis De Graaf

IPC: F16C33/74 ,  C10M171/00 ,  F16C17/02 ,  F16C32/06 ,  F16C33/10 ,  C10N20/06 ,  C10N30/00 ,  C10N40/02 ,  C10N40/14 ,  C10N40/18

CPC classification number: F16C33/746 ,  C10M171/001 ,  F16C17/02 ,  F16C32/0637 ,  F16C33/109 ,  C10N2020/06 ,  C10N2030/60 ,  C10N2040/02 ,  C10N2040/14 ,  C10N2040/18

Abstract: A bearing device with first and second bearing surfaces facing each other and which are moveable relative to one another. The first and second bearing surfaces are separated by a bearing gap filled with a lubricant. The lubricant comprises a carrier fluid and particles which respond to magnetic or electric fields. The particles are suspended in the carrier fluid in the absence of magnetic or electric fields. One or more magnetic or electric field generators are embedded in the first or second bearing surface to generate a localized magnetic or electric field which locally removes the particles from suspension by exerting a field force on the particles. This forms a local flow obstruction on at least one of the bearing surfaces in the form of an agglomerate of previously suspended particles. The local flow obstruction locally obstructs a flow of the lubricant.

公开(公告)号：US11920102B2

公开(公告)日：2024-03-05

申请号：US17795387

申请日：2021-01-21

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jason M. Kehren ,  David J. Lundberg ,  Zai-Ming Qiu ,  Michael G. Costello ,  Michael J. Bulinski ,  Alexandre R. Monteil

IPC: C10M107/38 ,  C08K5/372 ,  C10M135/08 ,  C10M135/22 ,  C10M169/04 ,  C10N20/00 ,  C10N20/02 ,  C10N40/18

CPC classification number: C10M107/38 ,  C08K5/372 ,  C10M135/08 ,  C10M135/22 ,  C10M169/04 ,  C10M2213/0606 ,  C10M2219/04 ,  C10M2219/082 ,  C10N2020/017 ,  C10N2020/02 ,  C10N2040/18

Abstract: A deposition composition includes a solvent comprising a hydrofluorothioether compound represented by the following general formula (I): Rf—S—Rh where Rf is a fluorinated or perfluorinated group having 2-9 carbon atoms and optionally includes one or more catenated heteroatoms or chlorine atoms, and Rh is a non-fluorinated hydrocarbon group having 1-3 carbon atoms. The deposition composition further includes a coating material that is soluble or dispersible in said solvent.

公开(公告)号：US11898117B2

公开(公告)日：2024-02-13

申请号：US18105368

申请日：2023-02-03

Applicant: Western Digital Technologies, Inc.

Inventor： Xingliang He ,  Bala Krishna Pathem

IPC: C10M107/38 ,  G11B5/012 ,  C08G65/26 ,  G11B5/255 ,  G11B5/725 ,  C10N20/04 ,  C10N50/08 ,  G11B5/00 ,  C10N40/18

CPC classification number: C10M107/38 ,  C08G65/2612 ,  G11B5/012 ,  G11B5/255 ,  G11B5/7257 ,  C10M2213/043 ,  C10N2020/04 ,  C10N2040/18 ,  C10N2050/08 ,  G11B2005/0021

Abstract: High temperature lubricants for magnetic media are provided. One such lubricant includes fluoroalkyl, fluoroalkenyl, perfluoroalkyl, or perfluoroalkyl ether segments, anchoring functional groups engageable with a protective overcoat of a magnetic recording media, and cyclic functional groups. The lubricants can be used in conjunction with a magnetic recording medium and/or a magnetic data storage system.

公开(公告)号：US20240034951A2

公开(公告)日：2024-02-01

申请号：US17630639

申请日：2020-07-09

Applicant: Resonac Corporation

Inventor： Naoya FUKUMOTO ,  Daisuke YAGYU ,  Tsuyoshi KATO ,  Katsumi MUROFUSHI

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

CPC classification number: C10M107/38 ,  C08G65/3318 ,  C08G65/3312 ,  C07C43/137 ,  G11B5/7253 ,  C10M2213/0606 ,  C10N2040/18

Abstract: A fluorine-containing ether compound represented by the following formula (1) is provided.


R2—CH2—R1—CH2OCH2CH(OH)—(CH2)n—CH(OH)CH2OCH2—R1—CH2—R2  (1)

(in the formula (1), n is an integer of 2 to 6, R1 is a perfluoropolyether chain, R2 is —OCH2CH(OH)CH2O(CH2)mOH (m in the formula is an integer of 2 to 4)).

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.