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US 11,427,779 B2Granted
Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium
AssigneeShowa Denko K.K.
InventorsYuta Yamaguchi, Daisuke Yagyu, Naoya Fukumoto, Shoko Uetake, Tsuyoshi Kato, Hiroyuki Tomita, Ryuuta Miyasaka, Katsumi Murofushi
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Abstract
A fluorine-containing ether compound represented by Formula (1) is provided. R1—R2—CH2—R3—CH2—R4—R5 (1) (In Formula (1), R1 and R5 each represents a group having a heterocyclic ring and may be the same as or different from each other, R2 and R4 each represents a divalent linking group having a polar group and play be the same as or different from each other, and R3 represents a perfluoropolyether chain.)
Claims11
A fluorine-containing ether compound represented by Formula (1)
- R1—R2—CH2—R3—CH2—R4—R5 (1)
- (in Formula (1), R1 and R5 each represents a group having a heterocyclic ring, wherein the heterocyclic ring is at least a pyrazole ring, a thiophene ring, a thiazole ring, or a pyridine ring, R1 and R5 may be the same as or different from each other, R2 and R4 are each represented by Formula (2-1) or (2-2), and R3 represents a perfluoropolyether chain)
- —(O—CH2CH(OH)CH2)a—O— (2-1)
- (in Formula (2-1), a represents an integer selected from 1 to 3)
- —(O—CH2CH(CH2OH)CH2)b—O— (2-2)
- (in Formula (2-2), b represents an integer selected from 1 to 3).
3 more elements
Dependencies are inferred from the claim text.