The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2026
Filed:
Jun. 30, 2022
Resonac Corporation, Tokyo, JP;
Chizuru Kasahara, Tokyo, JP;
Tsuyoshi Kato, Tokyo, JP;
Natsumi Shibata, Tokyo, JP;
Daisuke Yagyu, Tokyo, JP;
Yutaka Tanji, Tokyo, JP;
Takuma Kuroda, Tokyo, JP;
Resonac Corporation, Tokyo, JP;
Abstract
The present invention provides a fluorine-containing ether compound that can form a lubricating layer which can increase chemical substance resistance of a magnetic recording medium even if the thickness is thin, and can be suitably used as a material for a lubricant for a magnetic recording medium. The fluorine-containing ether compound is represented by the following formula. R—CH—R—CH—OCH—CHR—CHO—CH—R—CH—R(in the formula, Rand Rare a perfluoropolyether chain; Rand Rare terminal groups which contain two or three hydroxyl groups, and in which respective hydroxyl groups are bonded to different carbon atoms, and carbon atoms to which the hydroxyl groups are bonded are bonded to each other via a linking group containing a carbon atom to which no hydroxyl group is bonded; Ris represented by the following formula; and —(CH)—OH (a is an integer of 2 to 8)).