Dexerials Corporation

Nobuo Tano

Kouki Hatsuda

Hirofumi Kondo

Makiya Ito

Kyungsung Yun

Masayoshi Watanabe

Pankaj Baghel

Kenji Kobayashi

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.

Ionic liquid, lubricating agent, and magnetic recording medium

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 Rand Reach represent a hydrogen atom or Rand Rform a benzene ring together with carbon atoms to which Rand Rare bonded, Rrepresents a to straight-chain hydrocarbon group having 10 or more carbon atoms, and Rrepresents a hydrogen atom or a hydrocarbon group in the general formula (1).

Ionic liquid, lubricant, and magnetic recording medium

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.

Lubricant for magnetic recording medium, and magnetic recording medium

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), R, R, and Rare each independently a group including a hydrocarbon group, with the proviso that at least one of the hydrocarbon groups in R, R, and Ris a straight-chain hydrocarbon group having 6 or greater carbon atoms.

A lubricant including an ionic liquid, which includes a conjugate acid (B) and a conjugate base (X), and is protic, wherein the conjugate acid includes a straight-chain hydrocarbon group having 10 or more carbon atoms, and wherein the conjugate base is represented by the following general formula (1): where n is an integer of from 0 to 6 in the general formula (1).

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): where Rand Reach represent a hydrogen atom or Rand Rform a benzene ring together with carbon atoms to which Rand Rare bonded, and Rrepresents a straight-chain hydrocarbon group having 10 or more carbon atoms in the general formula (1).

Provided are a surface-modifying agent that enables production of a coating film that preserves transparency of a substrate while displaying high water repellency and excellent stain resistance, particularly in terms of wipeability of oil-based ink, and also an article for which the surface-modifying agent is used. The surface-modifying agent includes a triazine skeleton, a (meth)acrylate group bonded to the triazine skeleton via an urethane bond, and a perfluoropolyether chain bonded to the triazine skeleton.

Growing community of inventors

Tokyo, Japan

Nobuo Tano