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:
May. 02, 2023
Filed:
Jul. 30, 2018
Showa Denko K.k., Tokyo, JP;
Masaki Nanko, Ichihara, JP;
Naoya Fukumoto, Ichihara, JP;
Daisuke Yagyu, Ichihara, JP;
Yuta Yamaguchi, Kawasaki, JP;
Tsuyoshi Kato, Ichihara, JP;
Hiroyuki Tomita, Ichihara, JP;
Katsumi Murofushi, Ichihara, JP;
Shohei Nishizawa, Ichihara, JP;
SHOWA DENKO K.K., Tokyo, JP;
Abstract
Provided is a fluorine-containing ether compound that can be suitably used as a material for a lubricant for a magnetic recording medium, capable of forming a lubricant layer having excellent chemical substance resistance and wear resistance even when the thickness is small. A fluorine-containing ether compound represented by the following formula (1):R—R—CH—R—CH—R—R  (1) In the formula (1), Ris a perfluoropolyether chain. Rand Rare divalent linkage groups having a polar group, and may be the same or different. Rand Rare terminal groups bonded to Ror R, which may be the same or different, and at least one of Rand Ris an organic group having 1 to 8 carbon atoms wherein one or more hydrogen atoms of the organic group is substituted with a cyano group.