公开(公告)号：US20180268853A1

公开(公告)日：2018-09-20

申请号：US15977112

申请日：2018-05-11

申请人： WD MEDIA, LLC

发明人： KOICHI SHIMOKAWA ,  KATSUSHI HAMAKUBO ,  KAE ITOH

IPC分类号： G11B5/725 ,  G11B5/86 ,  C10M107/38 ,  C10M171/02 ,  C10M177/00 ,  G11B5/82 ,  G11B5/84

CPC分类号： G11B5/725 ,  C10M107/38 ,  C10M171/02 ,  C10M177/00 ,  C10M2213/003 ,  C10M2213/0606 ,  C10N2220/021 ,  C10N2230/06 ,  C10N2240/204 ,  C10N2250/14 ,  C10N2280/00 ,  G11B5/82 ,  G11B5/8408 ,  G11B5/86

摘要： A magnetic disk of is provided, the magnetic disk having at least a magnetic layer, a carbon protective layer, and a lubrication layer sequentially provided on a substrate. In an embodiment, the lubrication layer a film formed by a lubricant having a perfluoropolyether compound A having a perfluoropolyether main chain in the structure and also having a hydroxyl group at the end and a compound C obtained from a reaction between a compound B expressed by: [Chemical formula 1] CF3(—O—C2F4)m-(O—CF2)n-OCF3 [m and n in the formula are natural numbers.] and aluminum oxide.

公开(公告)号：US10077229B2

公开(公告)日：2018-09-18

申请号：US14913170

申请日：2014-07-11

申请人： Moresco Corporation

发明人： Shingo Maruyama ,  Yoshifumi Nakacho

IPC分类号： C07C69/708 ,  F16C32/06 ,  F16C33/04 ,  F16C33/66 ,  C10M105/34 ,  C10M129/70 ,  F16C33/10

CPC分类号： C07C69/708 ,  C10M105/34 ,  C10M129/70 ,  C10M2207/281 ,  C10M2207/2815 ,  C10M2215/064 ,  C10N2220/021 ,  C10N2220/022 ,  C10N2230/06 ,  C10N2230/08 ,  C10N2230/10 ,  C10N2240/02 ,  C10N2240/20 ,  C10N2240/203 ,  C10N2240/204 ,  C10N2240/30 ,  C10N2250/10 ,  F16C32/06 ,  F16C33/04 ,  F16C33/109 ,  F16C33/6633 ,  F16C33/6696

摘要： A compound of the present invention is represented by the general formula (1) and has a 40° C. kinetic viscosity (v) that satisfies 4 mm2/s≤v≤30 mm2/s, CnH2n+1—(O—CH2CH2)p—O—(CH2)3—(C═O)—O—CmH2m+1  (1) (where O represents an oxygen atom, C represents a carbon atom, H represents a hydrogen atom, m is an integer of 1 to 18, n is an integer of 1 to 12, p is an integer of 1 to 3, and 2≤n+m≤30 is satisfied). The present invention provides (i) a lubricant excellent in energy-saving, heat resistance, and low-temperature fluidity and (ii) use of the lubricant.

公开(公告)号：US20180237713A1

公开(公告)日：2018-08-23

申请号：US15753231

申请日：2016-08-16

申请人： DEXERIALS CORPORATION

发明人： Hirofumi Kondo ,  Kouki Hatsuda ,  Nobuo Tano ,  Pankaj Baghel

IPC分类号： C10M105/70 ,  C10M105/72 ,  C10M105/50 ,  C10M171/00

CPC分类号： C10M105/70 ,  C10M105/50 ,  C10M105/72 ,  C10M171/00 ,  C10M2211/063 ,  C10M2215/221 ,  C10M2215/223 ,  C10M2215/2245 ,  C10M2219/0406 ,  C10M2219/044 ,  C10M2219/104 ,  C10N2220/04 ,  C10N2230/06 ,  C10N2230/08 ,  C10N2230/70 ,  C10N2240/204

摘要： A lubricant, which includes an ionic liquid including a conjugate base and a conjugate acid, wherein the conjugate acid has a group including a straight-chain hydrocarbon group having 6 or more carbon atoms, a pKa of an acid that is a source of the conjugate base in acetonitrile is 10 or less, and solubility of the ionic liquid to CF3(CHF)2CF2CF3 is 0.1 parts by mass relative to 100 parts by mass of CF3(CHF)2CF2CF3.

公开(公告)号：US09984715B2

公开(公告)日：2018-05-29

申请号：US14930229

申请日：2015-11-02

申请人： WD MEDIA, LLC

发明人： Koichi Shimokawa ,  Katsushi Hamakubo ,  Kae Itoh

IPC分类号： G11B5/725 ,  G11B5/86 ,  C10M107/38 ,  C10M171/02 ,  C10M177/00 ,  G11B5/84 ,  G11B5/82

CPC分类号： G11B5/725 ,  C10M107/38 ,  C10M171/02 ,  C10M177/00 ,  C10M2213/003 ,  C10M2213/0606 ,  C10N2220/021 ,  C10N2230/06 ,  C10N2240/204 ,  C10N2250/14 ,  C10N2280/00 ,  G11B5/82 ,  G11B5/8408 ,  G11B5/86

摘要： A magnetic disk of is provided, the magnetic disk having at least a magnetic layer, a carbon protective layer, and a lubrication layer sequentially provided on a substrate. In an embodiment, the lubrication layer a film formed by a lubricant having a perfluoropolyether compound A having a perfluoropolyether main chain in the structure and also having a hydroxyl group at the end and a compound C obtained from a reaction between a compound B expressed by: [Chemical formula 1] CF3(—O—C2F4)m-(O—CF2)n-OCF3 [m and n in the formula are natural numbers.] and aluminum oxide.

公开(公告)号：US20180127543A1

公开(公告)日：2018-05-10

申请号：US15803963

申请日：2017-11-06

申请人： SHOWA DENKO K.K.

发明人： Kentaro WATANABE ,  Yasuyuki UEDA ,  Takeshi IGARASHI

IPC分类号： C08G65/329 ,  C10M107/38 ,  C08G65/337 ,  C08G65/332 ,  C08G65/333

CPC分类号： C08G65/329 ,  C08G65/332 ,  C08G65/33317 ,  C08G65/33375 ,  C08G65/337 ,  C08G2650/48 ,  C10M107/38 ,  C10M2213/043 ,  C10M2213/0606 ,  C10N2230/56 ,  C10N2240/204

摘要： In an organic fluorine compound, an organic group including a single aromatic ring or a condensed ring consisting of aromatic rings at a non-bonded terminal is bonded to each of all of terminals of a chain structure including a perfluoropolyether structure.

公开(公告)号：US20180025748A1

公开(公告)日：2018-01-25

申请号：US15548335

申请日：2016-02-03

申请人： Dexerials Corporation

发明人： Nobuo TANO ,  Kouki HATSUDA ,  Hirofumi KONDO

IPC分类号： G11B5/725 ,  C10M105/54 ,  C10M105/72 ,  C10M105/58 ,  G11B5/84 ,  C10M159/12

CPC分类号： G11B5/725 ,  C10M105/54 ,  C10M105/58 ,  C10M105/60 ,  C10M105/72 ,  C10M171/00 ,  C10M2215/003 ,  C10M2215/0425 ,  C10M2219/0406 ,  C10N2220/021 ,  C10N2220/04 ,  C10N2230/06 ,  C10N2230/08 ,  C10N2230/10 ,  C10N2240/204 ,  C10N2250/121 ,  G11B5/84

摘要： A lubricant for a magnetic recording medium including an ionic liquid including a Bronsted acid and a Bronsted base that is primary amine as constituents of the ionic liquid, wherein the Bronsted acid includes a fluorine-containing chain, the Bronsted base includes a fluorine-containing chain that is a perfluoroalkyl chain or a perfluoropolyether chain, wherein the fluorine-containing chain in the Bronsted acid is a perfluoropolyether chain or the fluorine-containing chain in the Bronsted base is the perfluoropolyether chain, or the fluorine-containing chain in the Bronsted acid is the perfluoropolyether chain and the fluorine-containing chain in the Bronsted base is the perfluoropolyether chain, and a number average molecular weight of the fluorine-containing chain in the Bronsted acid is 1,500 or less.

公开(公告)号：US20180016510A1

公开(公告)日：2018-01-18

申请号：US15546584

申请日：2016-01-07

申请人： Dexerials Corporation

发明人： Hirofumi Kondo ,  Kouki Hatsuda ,  Nobuo Tano ,  KyungSung Yun

IPC分类号： C10M105/72 ,  C07D471/04 ,  C07C255/05 ,  C07C309/06 ,  C07D233/58 ,  C07D207/06 ,  C10M105/70 ,  C07C211/63 ,  C07D285/15 ,  G11B5/725 ,  C07C311/48

CPC分类号： C10M105/72 ,  C07C211/63 ,  C07C255/05 ,  C07C309/06 ,  C07C311/48 ,  C07D207/06 ,  C07D233/58 ,  C07D285/15 ,  C07D471/04 ,  C10M105/70 ,  C10M171/00 ,  C10M2215/041 ,  C10M2215/16 ,  C10M2215/221 ,  C10M2215/223 ,  C10M2215/2245 ,  C10M2215/305 ,  C10M2219/0406 ,  C10M2219/09 ,  C10M2219/104 ,  C10N2220/04 ,  C10N2230/06 ,  C10N2230/08 ,  C10N2240/204 ,  G11B5/725

摘要： A lubricant, which includes an ionic liquid including a conjugate base and a conjugate acid including 2 or more cations in a molecule of the conjugate acid, wherein the conjugate acid includes a monovalent group including a straight-chain hydrocarbon group having 6 or more carbon atoms, and an acid that is a source of the conjugate base has a pKa in acetonitrile of 10 or less.

公开(公告)号：US20170337945A1

公开(公告)日：2017-11-23

申请号：US15535982

申请日：2015-12-16

申请人： SHOWA DENKO K.K.

发明人： Satoru NAKAMURA ,  Taining HUNG ,  Evance KUO ,  Daizo ENDO

IPC分类号： G11B5/725 ,  C10M111/04 ,  C10M105/54 ,  C10M107/38

CPC分类号： G11B5/725 ,  C10M105/54 ,  C10M107/38 ,  C10M111/04 ,  C10M2211/0425 ,  C10M2213/043 ,  C10N2220/021 ,  C10N2230/56 ,  C10N2240/20 ,  C10N2240/204 ,  C10N2250/08

摘要： The present invention relates to a magnetic recording medium in which a lubricant layer contains a compound A represented by general formula (1) and a compound B represented by general formula (2), satisfying (A/B)=0.2 to 3.0, and has an average thickness of 0.8 nm to 2 nm. R1—C6H4OCH2CH(OH)CH2OCH2—R2—CH2OCH2CH(OH)CH2OH . . . (1) (R1 is an alkoxy group having 1 to 4 carbon atoms. R2 is —CF2O(CF2CF2O)x(CF2O)yCF2— (x, y=0 to 15), —CF2CF2O(CF2CF2CF2O)zCF2CF2— (z=1 to 15), —CF2CF2CF2O(CF2CF2CF2CF2)nCF2CF2CF2— (n=0 to 4). HOCH2CF2CF2O(CF2CF2CF2O)mCF2CF2CH2OCH2CH(OH)CH2OH . . . (2) (m is an integer).

公开(公告)号：US09805755B1

公开(公告)日：2017-10-31

申请号：US14788654

申请日：2015-06-30

申请人： Seagate Technology LLC

发明人： Jiping Yang

IPC分类号： G11B5/66 ,  G11B5/725 ,  C10M105/54 ,  C07C43/13

CPC分类号： G11B5/725 ,  C07C43/137 ,  C10M105/54 ,  C10M107/38 ,  C10M2213/023 ,  C10N2220/021 ,  C10N2230/00 ,  C10N2240/204

摘要： Provided herein is a lubricant including a compound of Formula I L-(CF2CF2O)n—CF2CH2O—N—OCH2CF2O—(CF2CF2O)m-M  (Formula I) wherein L is selected from the group consisting of M is selected from the group consisting of wherein each instance of R1, R2, and R3 is independently selected from the group consisting of hydroxyl, alkoxyl, carbocycyl, phenyl, heterocycyl, piperonyl, carboxyl, alkylamido, acetamido, carbamoyl, N-alkylcarbamoyl, N,N-dialkylcarbamoyl, 2,3-dihydroxy-1-propoxyl, acryloyl, alkacryloyl, methacryloyl, a substituent of methyl methacrylate, and a substituent of glycidyl ether; and wherein n≧1, m≧1, and n and m are the same or different.

公开(公告)号：US20170233677A1

公开(公告)日：2017-08-17

申请号：US15043986

申请日：2016-02-15

申请人： Seagate Technology LLC

发明人： Zubair Ahmed Khan ,  Joel W. Hoehn ,  Peter John Gunderson

IPC分类号： C10M169/04 ,  C10M147/02 ,  C10M105/14

CPC分类号： C10M169/041 ,  C10M105/14 ,  C10M147/02 ,  C10M173/02 ,  C10M2205/022 ,  C10M2205/024 ,  C10M2205/16 ,  C10M2207/0225 ,  C10M2213/02 ,  C10M2213/062 ,  C10N2230/08 ,  C10N2240/204 ,  C10N2240/401 ,  C10N2250/12 ,  C10N2270/00

摘要： Disclosed herein are embodiments of a method of making a lubricant composition for lapping a ceramic material. The method includes mixing a base lubricant component and a powdered wax composition component to form the lubricant composition. The powdered wax composition component includes a powdered wax dispersion or a powdered wax emulsion. The amount of powdered wax composition component mixed with the base lubricant component is from 0.01 to 10 percent by weight of the lubricant composition. Also disclosed herein are embodiments of related lubricant compositions and/or methods of using the lubricant to lap a ceramic substrate (e.g., one or more bars of sliders).