Title:
FLUORINE-CONTAINING ETHER COMPOUND, LUBRICANT FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/286626
Kind Code:
A1
Abstract:
Provided is a fluorine-containing ether compound that can form a lubricating layer with which it is possible to raise the chemical resistance of magnetic recording media even when the layer is thin and that can be used suitably as a material of a lubricant for magnetic recording media. Provided is a fluorine-containing ether compound represented by the following formula. R1-CH2-R2-CH2-OCH2-CHR3-CH2O-CH2-R4-CH2-R5 (in the formula, R2 and R4 are perfluoropolyether chains. R1 and R5 are end groups that include two or three hydroxyl groups, each of the hydroxyl groups bonding to a mutually different carbon atom, and the carbon atoms to which the hydroxyl groups are bonded bonding to each other via linking groups that include carbon atoms to which no hydroxyl groups are bonded. R3 is represented by the following formula. -(CH2)a-OH (a is an integer of 2-8.))
Inventors:
KASAHARA CHIZURU (JP)
KATO TSUYOSHI (JP)
SHIBATA NATSUMI (JP)
YAGYU DAISUKE (JP)
TANJI YUTAKA (JP)
KURODA TAKUMA (JP)
KATO TSUYOSHI (JP)
SHIBATA NATSUMI (JP)
YAGYU DAISUKE (JP)
TANJI YUTAKA (JP)
KURODA TAKUMA (JP)
Application Number:
PCT/JP2022/026256
Publication Date:
January 19, 2023
Filing Date:
June 30, 2022
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
International Classes:
C07C43/13; C10M105/54; G11B5/70; G11B5/725; G11B5/84; C10N30/00; C10N40/18
Domestic Patent References:
| WO2021131961A1 | 2021-07-01 | |||
| WO2021019998A1 | 2021-02-04 |
Foreign References:
| US20200002640A1 | 2020-01-02 |
Attorney, Agent or Firm:
OIKAWA Shu et al. (JP)
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