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US 2020/0216773 A1Published application
Ionic Liquid, Lubricant, and Magnetic Recording Medium
AssigneeDexerials Corporation
InventorsHirofumi Kondo, Kouki Hatsuda, Nobuo Tano, KyungSung Yun
Life of this patent
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Abstract
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.
Claims19
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A lubricant comprising:
- an ionic liquid including a conjugate base and conjugate acid,
- wherein an acid that is the source of the conjugate base has a pKa in acetonitrile of 10 or less, and
- wherein the ionic liquid is represented by General Formula (4) below:
- where, in General Formula (4), each R is independently a group including a straight-chain hydrocarbon group having 6 or more carbon atoms, A− is the conjugate base, and n is 1 or greater but 20 or less.
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An ionic liquid comprising:
- a conjugate base;
- and
- a conjugate acid,
- wherein an acid that is a source of the conjugate base has a pKa in acetonitrile of 10 or less, and
- wherein the ionic liquid is represented by General Formula (4) below:
- where, in General Formula (4), each R is independently a group including a straight-chain hydrocarbon group having 6 or more carbon atoms, A− is the conjugate base, and n is 1 or greater but 20 or less.
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Dependencies are inferred from the claim text.