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US 2026/0185010 A1Published application
Fluorine-containing ether compound, lubricant for magnetic recording medium and magnetic recording medium
AssigneeResonac Corporation
InventorsNatsumi YOSHIMURA, Ayano ASANO, Yutaka TANJI, Naoya FUKUMOTO, Tsuyoshi KATO
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Abstract
A fluorine-containing ether compound represented by the following formula R1—CH2—R2[—CH2—R3—CH2—R2]x—CH2—R4 (R1 and R4 are terminal groups containing two or three polar groups, wherein the polar groups are bonded to different carbon atoms, and carbon atoms to which the polar groups are bonded are bonded via a linking group containing carbon atoms to which no polar group is bonded; x is 1 to 2; R2 is a perfluoropolyether chain; R3 is Formula (3-1) or (3-2)).
Claims12
A fluorine-containing ether compound represented by the following Formula (1):
- (in Formula (1), R1 and R4 are each independently a terminal group containing two or three polar groups, wherein the polar groups are bonded to different carbon atoms, and carbon atoms to which the polar groups are bonded are bonded via a linking group containing carbon atoms to which no polar group is bonded;
- x represents an integer of 1 to 2;
- R2 is a perfluoropolyether chain;
- some or all of two or three R2's may be the same as or different from each other;
- R3 is a divalent linking group represented by the following Formula (3-1) or (3-2);
- and when x is 2, two R3's may be the same as or different from each other).
- (in Formula (3-1), a represents an integer of 2 to 4;
- y1 represents an integer of 1 to 3;
- y2 represents an integer of 1 to 3;
- at least one of y1 and y2 is 1;
- and a dotted line bonded to the oxygen atom on the left side indicates a bond that is bonded to the methylene group on the side of R1, and a dotted line bonded to the oxygen atom on the right side indicates a bond that is bonded to a methylene group on the side of R4)
- (in Formula (3-2), y3 represents an integer of 1 to 3;
- y4 represents an integer of 1 to 3;
- at least one of y3 and y4 is 1;
- and a dotted line bonded to the oxygen atom on the left side indicates a bond that is bonded to the methylene group on the side of R1, and a dotted line bonded to the oxygen atom on the right side indicates a bond that is bonded to a methylene group on the side of R4).
12 more elements
Dependencies are inferred from the claim text.