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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.:

US 11427779 B1

PDFFull Text
Date of Patent:
Aug. 30, 2022

Filed:

Jan. 05, 2018

Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium

Applicant:

Showa Denko K.k., Tokyo, JP;

Inventors:

Yuta Yamaguchi, Kawasaki, JP;

Daisuke Yagyu, Ichihara, JP;

Naoya Fukumoto, Ichihara, JP;

Shoko Uetake, Ichihara, JP;

Tsuyoshi Kato, Ichihara, JP;

Hiroyuki Tomita, Ichihara, JP;

Ryuuta Miyasaka, Ichihara, JP;

Katsumi Murofushi, Ichihara, JP;

Assignee:

SHOWA DENKO K.K., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Holly Rickman

Int. Cl.
CPC ...
C10M 107/46 (2006.01); G11B 5/72 (2006.01); G11B 5/725 (2006.01); C10N 40/18 (2006.01); C07D 213/68 (2006.01); C07D 231/12 (2006.01); C07D 277/24 (2006.01); C07D 333/16 (2006.01); C07D 409/12 (2006.01); C08G 65/333 (2006.01); C08G 65/334 (2006.01); C10M 107/44 (2006.01);
U.S. Cl.
CPC ...
C10M 107/46 (2013.01); C07D 213/68 (2013.01); C07D 231/12 (2013.01); C07D 277/24 (2013.01); C07D 333/16 (2013.01); C07D 409/12 (2013.01); C08G 65/3344 (2013.01); C08G 65/3348 (2013.01); C08G 65/33396 (2013.01); C10M 107/44 (2013.01); G11B 5/7257 (2020.08); G11B 5/7266 (2020.08); G11B 5/7268 (2020.08); C10M 2217/065 (2013.01); C10M 2221/0405 (2013.01); C10N 2040/18 (2013.01);
Abstract

A fluorine-containing ether compound represented by Formula (1) is provided.R—R—CH—R—CH—R—R  (1)(In Formula (1), Rand Reach represents a group having a heterocyclic ring and may be the same as or different from each other, Rand Reach represents a divalent linking group having a polar group and play be the same as or different from each other, and Rrepresents a perfluoropolyether chain.)

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