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公开(公告)号：US12110470B2
公开(公告)日：2024-10-08
申请号：US17620930
申请日：2020-06-15
申请人： Moresco Corporation
发明人： Tomomi Hatta , Tsuyoshi Shimizu
IPC分类号： C10M147/04 , C10M107/38 , G11B5/725 , C10N40/18
CPC分类号： C10M147/04 , G11B5/7257 , C10M2213/06 , C10N2040/18
摘要： Provided are a magnetic disk and, in particular, a compound which makes it possible to realize a lubricant having excellent heat resistance and solubility in a fluorine-based solvent. A perfluoropolyether compound in accordance with an aspect of the present invention has, in hydrocarbon groups at both terminals thereof, five or six hydroxyl groups in total.
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2.发明公开公开(公告)号：US20240279395A1
公开(公告)日：2024-08-22
申请号：US18285609
申请日：2022-04-07
申请人： Resonac Corporation
发明人： Natsumi SHIBATA , Naoya FUKUMOTO , Ayano ASANO , Tsuyoshi KATO , Takuma KURODA , Daisuke YAGYU , Chizuru KASAHARA , Yutaka TANJI
IPC分类号： C08G65/22 , C10M107/38 , C10N40/18
CPC分类号： C08G65/226 , C10M107/38 , C10N2040/18
摘要： The present invention provides a fluorine-containing ether compound represented by following formula.
R1—CH2—R2—CH2—R3—CH2—R4—CH2—R5—CH2—R6—CH2—R7
(R2, R4, and R6 are perfluoropolyether chains having the structure R3 and R5 are each independently a linking group containing one or more hydroxyl groups, and R1 and R7 are each independently Formula (2).)
—O—CH2—CH(OH)—([D]—CH(OH))s-[E]-CH2OH (2)
(s is 0 or 1, [D] and [E] each independently is a chain structure consisting of a combination of 2 to 5 methylene groups and 1 oxygen atom or a chain structure consisting of 1 to 4 methylene groups, provided that, in case where s is 0 and [E] contains an oxygen atom, the number of methy ne groups contained in [E] is 3 or more).-
公开(公告)号：US11866548B2
公开(公告)日：2024-01-09
申请号：US17629165
申请日：2020-06-29
申请人： Moresco Corporation
发明人： Ryosuke Sagata , Tsuyoshi Shimizu
IPC分类号： C08G65/00 , G11B5/725 , C10M105/54 , C10M107/34 , C10M107/38 , G11B5/82 , C10N40/18
CPC分类号： C08G65/007 , C10M105/54 , C10M107/34 , C10M107/38 , G11B5/7257 , G11B5/82 , C08G2650/38 , C08G2650/48 , C10M2211/0425 , C10M2213/043 , C10M2213/0606 , C10N2040/18
摘要： Provided is a compound with which a lubricant having excellent adhesion to a magnetic disk, particularly to a protective layer can be provided. A perfluoropolyether compound in accordance with one aspect of this invention has a structure in which two perfluoropolyethers are bonded to each other through an aliphatic ether, the aliphatic ether including a carbon atom to which a primary alcohol is bonded.
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公开(公告)号：US11674102B2
公开(公告)日：2023-06-13
申请号：US17752552
申请日：2022-05-24
IPC分类号： C10M105/18 , C10N30/00 , C10N20/00 , C10N40/02 , C10N40/18
CPC分类号： C10M105/18 , C10M2207/0406 , C10N2020/079 , C10N2030/30 , C10N2030/40 , C10N2040/02 , C10N2040/18
摘要： Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), and a tricyclic liquid crystal compound of formula (2), and having a mixing mass ratio of the bicyclic liquid crystal compound and tricyclic liquid crystal compound of 95:5 to 15:85. The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing.
R1 and R2 are the same or different from each other, and each is —OCH2CH2CH(R′)CH2CH2OR
R11 and R21 are the same or different from each other, and each is —OR. R12, R13, R22 and R23 are the same or different from each other, and each is hydrogen or —OR. R is a linear or branched CnH2n+1, 1≤n≤20 and R′ is methyl or ethyl.-
公开(公告)号：US11661408B2
公开(公告)日：2023-05-30
申请号：US17274702
申请日：2019-08-28
申请人： SHOWA DENKO K.K.
IPC分类号： C07D333/16 , G11B5/725 , C10M107/38 , G11B5/72 , C10N40/18
CPC分类号： C07D333/16 , C10M107/38 , G11B5/7257 , G11B5/7266 , C10N2040/18
摘要： 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.
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公开(公告)号：US11427779B2
公开(公告)日：2022-08-30
申请号：US16480483
申请日：2018-01-05
申请人： SHOWA DENKO K.K.
发明人： Yuta Yamaguchi , Daisuke Yagyu , Naoya Fukumoto , Shoko Uetake , Tsuyoshi Kato , Hiroyuki Tomita , Ryuuta Miyasaka , Katsumi Murofushi
IPC分类号： C10M107/46 , G11B5/72 , G11B5/725 , C10N40/18 , C07D213/68 , C07D231/12 , C07D277/24 , C07D333/16 , C07D409/12 , C08G65/333 , C08G65/334 , C10M107/44
摘要： 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.)
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公开(公告)号：US11421172B2
公开(公告)日：2022-08-23
申请号：US16482756
申请日：2018-01-17
申请人： Moresco Corporation
发明人： Tomomi Hatta , Tsuyoshi Shimizu , Aya Inoue , Yasuo Sakane
IPC分类号： C10M107/38 , C08G65/22 , G11B5/725 , C10N40/18
摘要： Provided are a lubricant that is highly resistant to contamination and highly thermally stable, a lubricant that is highly durable and highly heat resistant, and a magnetic disk. A fluoropolyether compound contains perfluoropolyether groups, end groups each containing at least one hydroxyl group, and a linking group that is comprised of a C4-C14 hydrocarbon group and that contains at least one hydroxyl group.
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公开(公告)号：US11220649B2
公开(公告)日：2022-01-11
申请号：US16480464
申请日：2017-12-04
申请人： SHOWA DENKO K.K.
发明人： Naoya Fukumoto , Daisuke Yagyu , Yuta Yamaguchi , Shoko Uetake , Tsuyoshi Kato , Hiroyuki Tomita , Ryuuta Miyasaka , Katsumi Murofushi
IPC分类号： C10M105/54 , C07C43/178 , G11B5/725 , C08G65/331 , C10M107/38 , C10N20/04 , C10N30/06 , C10N50/00 , C10N40/18
摘要： 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).
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公开(公告)号：US10947476B2
公开(公告)日：2021-03-16
申请号：US16025954
申请日：2018-07-02
发明人： Yu Lu , JiPing Yang , Jingyuan Zhuo , Qian Guo , Wen H. Liu
IPC分类号： C10M169/04 , C10M147/04 , C10M107/38 , C10N40/18
摘要： Provided herein is a lubricant comprising a compound of Formula I: wherein R1 and R2 are independent and have the structure selected from —(CF2O)x(CF2CF2O)y(CF2CF2CF2O)z(CF2CF2CF2CF2O)w—, x, y, z and w are selected from an integer from 0 to 30; p, and q are selected from an integer from 0 to 3; A and B are independent and have the structure selected from: —(CH2CH(OH)CH2O)jH, and j is an integer selected from 0 to 3.
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公开(公告)号：US10906908B2
公开(公告)日：2021-02-02
申请号：US15974804
申请日：2018-05-09
发明人： Hirofumi Kondo , Kouki Hatsuda , Nobuo Tano , Makiya Ito , Kyungsung Yun , Masayoshi Watanabe
IPC分类号： C07D487/04 , C07D285/15 , C10M105/70 , C10M105/72 , G11B5/725 , C10N20/00 , C10N30/06 , C10N40/18 , C10N30/00
摘要： A lubricating agent including an ionic liquid formed from a Bronsted acid (HX) and a Bronsted base (B), wherein the Bronsted base has a linear hydrocarbon group having 10 or more carbon atoms and the difference between the pKa value of the Bronsted acid in water and the pKa value of the Bronsted base in water is 12 or more.
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