US 12,264,290 B2
Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium
Natsumi Shibata, Ichihara (JP); Naoya Fukumoto, Ichihara (JP); and Tsuyoshi Kato, Ichihara (JP)
Assigned to Resonac Corporation, Tokyo (JP)
Appl. No. 18/009,221
Filed by SHOWA DENKO K.K., Tokyo (JP)
PCT Filed Jun. 7, 2021, PCT No. PCT/JP2021/021558
§ 371(c)(1), (2) Date Dec. 8, 2022,
PCT Pub. No. WO2021/251335, PCT Pub. Date Dec. 16, 2021.
Claims priority of application No. 2020-101574 (JP), filed on Jun. 11, 2020.
Prior Publication US 2023/0242829 A1, Aug. 3, 2023
Int. Cl. C10M 107/38 (2006.01); C07C 43/13 (2006.01); C08G 65/22 (2006.01); C08G 65/331 (2006.01); G11B 5/725 (2006.01); C10N 40/18 (2006.01)
CPC C10M 107/38 (2013.01) [C07C 43/137 (2013.01); C08G 65/226 (2013.01); C08G 65/3318 (2013.01); G11B 5/7257 (2020.08); C10M 2213/043 (2013.01); C10N 2040/18 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A fluorine-containing ether compound represented by Formula (1) below,
R1—CH2—R2—CH2—OCH2CH(OH)CH2O—CH2—R3—CH2—R4  (1)
(in Formula (1), R2 and R3 consist of perfluoropolyether chains; and —CH2—R1 and —CH2—R4 are represented by Formula (2) below),
—CH2—[A]—[B]—OZ  (2),
in Formula (2), [A] is represented by Formula (3) below, [B] is represented by Formula (4) below, Z is H or a group represented by Formula (5) below; [A] and [B] in Formula (2) may be exchanged with each other, and Z is the group represented by Formula (5) below in a case where [A] is directly bound to —OZ, and

OG Complex Work Unit Chemistry
in Formula (3), X is an integer of 0 to 2, in Formula (4), Y is an integer of 0 to 1 and a is an integer of 1 to 4; the sum of X in Formula (3) and Y in Formula (4) is 1 or 2; and b in Formula (5) is an integer of 2 to 4.