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公开(公告)号：US20180362874A1
公开(公告)日：2018-12-20
申请号：US15780171
申请日：2016-12-06
发明人： Nobuo Tano , Kouki Hatsuda , Hirofumi Kondo
IPC分类号： C10M105/72 , G11B5/725
摘要： Provided is a lubricant for magnetic recording medium, where the lubricant includes an ionic liquid including an anionic component and a cationic component, wherein the anionic component includes a fluorine-containing chain having a number average molecular weight of 1,500 or less, the cationic component is a cation of cyclic amidine, and the cation of the cyclic amidine includes a fluorine-containing chain that is either a perfluoroalkyl chain or a perfluoropolyether chain.
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公开(公告)号：US20180251468A1
公开(公告)日：2018-09-06
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 , C10M159/12 , C07C211/21 , C07C309/04 , C07C309/06 , C07C211/07 , C07C311/48 , C10M105/70 , C10M105/60 , C10M171/00 , G11B5/725 , C10M105/72 , C10M105/58 , C07C211/03
CPC分类号： C07D487/04 , C07C211/03 , C07C211/07 , C07C211/21 , C07C309/04 , C07C309/06 , C07C311/48 , C07D285/15 , C10M105/58 , C10M105/60 , C10M105/70 , C10M105/72 , C10M159/12 , C10M171/00 , C10M2215/003 , C10M2215/041 , C10M2215/2203 , C10M2219/0406 , C10N2220/027 , C10N2230/06 , C10N2230/74 , C10N2240/204 , G11B5/725
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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公开(公告)号：US20190051326A1
公开(公告)日：2019-02-14
申请号：US16077622
申请日：2017-02-07
发明人： HIrofumi Kondo , Kouki Hatsuda , Nobuo Tano , Pankaj Baghel
IPC分类号： G11B5/725 , C10M105/70 , C10M105/72
摘要： A lubricant including an ionic liquid including a conjugate base and a conjugate acid, wherein the conjugate acid includes a group including a hydroxyl group and a group including a straight-chain hydrocarbon group having 6 or greater carbon atoms, and a pKa of an acid that is a source of the conjugate base in acetonitrile is 10 or less.
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公开(公告)号：US10184092B2
公开(公告)日：2019-01-22
申请号：US15319675
申请日：2015-05-18
发明人： Hirofumi Kondo , Kouki Hatsuda , Makiya Ito , Nobuo Tano , Kyungsung Yun , Masayoshi Watanabe
IPC分类号： C10M105/72 , C07D233/58 , C07D285/16 , G11B5/725 , C07C309/06 , C07C311/48 , C07C317/04 , C10M105/54 , C10M105/70
摘要： A lubricant including: an ionic liquid, which includes a conjugate acid (B+) and a conjugate base (X−), and is protic, wherein the ionic liquid is represented by the following general formula (1), and wherein the conjugate base is a conjugate base of sulfonic acid, a conjugate base of sulfonimide, or a conjugate base of trisulfonylmethide: where R1 and R2 each represent a hydrogen atom or R1 and R2 form a benzene ring together with carbon atoms to which R1 and R2 are bonded, R3 represents a to straight-chain hydrocarbon group having 10 or more carbon atoms, and R4 represents a hydrogen atom or a hydrocarbon group in the general formula (1).
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公开(公告)号：US10141017B2
公开(公告)日：2018-11-27
申请号：US15548335
申请日：2016-02-03
发明人： Nobuo Tano , Kouki Hatsuda , Hirofumi Kondo
IPC分类号： G11B5/84 , G11B5/725 , C10M105/54 , C10M105/58 , C10M105/60 , C10M105/72 , C10M171/00
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.
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公开(公告)号：US10047091B2
公开(公告)日：2018-08-14
申请号：US14655457
申请日：2013-12-27
发明人： Hirofumi Kondo , Kouki Hatsuda , Nobuo Tano , Makiya Ito , Kyungsung Yun , Masayoshi Watanabe
IPC分类号： C07D487/04 , C07C311/48 , C07C211/07 , C07C309/06 , C07C309/04 , C07C211/21 , C07C211/03 , C07D285/15 , C10M159/12 , C10M105/58 , C10M105/72 , G11B5/725 , C10M171/00 , C10M105/60 , C10M105/70
CPC分类号： C07D487/04 , C07C211/03 , C07C211/07 , C07C211/21 , C07C309/04 , C07C309/06 , C07C311/48 , C07D285/15 , C10M105/58 , C10M105/60 , C10M105/70 , C10M105/72 , C10M159/12 , C10M171/00 , C10M2215/003 , C10M2215/041 , C10M2215/2203 , C10M2219/0406 , C10N2220/027 , C10N2230/06 , C10N2230/74 , C10N2240/204 , G11B5/725
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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公开(公告)号：US20170369807A1
公开(公告)日：2017-12-28
申请号：US15631746
申请日：2017-06-23
发明人： Hirofumi Kondo , Kouki Hatsuda , Nobuo Tano , Pankaj Baghel
IPC分类号： C10M105/60 , G11B5/725 , C10M105/50 , C10M105/72
CPC分类号： C10M105/60 , C10M105/50 , C10M105/72 , C10M2215/041 , C10M2219/0406 , C10N2220/04 , C10N2230/08 , C10N2230/10 , C10N2230/70 , C10N2240/204 , G11B5/725
摘要： A lubricant including an ionic liquid including a conjugate base and a conjugate acid, wherein the conjugate acid is represented by General Formula (A) below, and wherein a pKa of an acid that is a source of the conjugate base in acetonitrile is 10 or less, where, in General Formula (A), R is a group including a straight-chain hydrocarbon group having 6 or greater carbon atoms, and R1 and R2 are each independently a hydrocarbon group.
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公开(公告)号：US20200216773A1
公开(公告)日：2020-07-09
申请号：US16677992
申请日：2019-11-08
发明人： Hirofumi Kondo , Kouki Hatsuda , Nobuo Tano , KyungSung Yun
IPC分类号： C10M105/72 , G11B5/725 , C10M105/70 , C07D471/04 , C07D285/15 , C07D233/58 , C07D207/06 , C07C311/48 , C07C309/06 , C07C255/05 , C07C211/63 , C10M171/00
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.
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公开(公告)号：US10106757B2
公开(公告)日：2018-10-23
申请号：US15485559
申请日：2017-04-12
发明人： Hirofumi Kondo , Kouki Hatsuda , Nobuo Tano , Pankaj Baghel
IPC分类号： C10M105/72 , C10M105/70 , C07C309/06 , C07D233/58 , G11B5/725
摘要： A lubricant, which includes an ionic liquid including a conjugate base and a conjugate acid, wherein the conjugate acid is represented by General Formula (A) below, and wherein a pKa of an acid that is a source of the conjugate base in acetonitrile is 10 or less, where, in General Formula (A), R1, R2, and R3 are each independently a group including a hydrocarbon group, with the proviso that at least one of the hydrocarbon groups in R1, R2, and R3 is a straight-chain hydrocarbon group having 6 or greater carbon atoms.
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公开(公告)号：US20180237713A1
公开(公告)日：2018-08-23
申请号：US15753231
申请日：2016-08-16
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.
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