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US 12,668,755 B2Granted
Fluorine-containing ether compound, lubricant for magnetic recording medium and magnetic recording medium
AssigneeResonac Corporation
InventorYutaka Tanji
Life of this patent
Estimating the term…
Abstract
A fluorine-containing ether compound represented by the following formula: R1—R2—CH2—R3[—CH2—R4—CH2—R3]x—CH2—R5—R6 (R1 and R6 are an organic group having 1 to 50 carbon atoms; R2 is Formula (2-1) or (2-2); R5 is Formula (2-3) or (2-4); R3 is a perfluoropolyether chain; R4 is Formula (3-1) or (3-2); and x is 0 to 2).
Claims13
A fluorine-containing ether compound represented by the following Formula (1):
- (in Formula (1), R1 and R6 are each independently an organic group having 1 to 50 carbon atoms;
- R2 is a divalent linking group represented by the following Formula (2-1) or (2-2);
- R5 is a divalent linking group represented by the following Formula (2-3) or (2-4);
- x represents an integer of 0 to 2;
- R3 is a perfluoropolyether chain;
- when x is 1 or 2, some or all of two or three R3's may be the same as or different from each other;
- R4 is a divalent linking group represented by the following Formula (3-1) or (3-2);
- and when x is 2, two R4's may be the same as or different from each other)
- (in Formula (2-1), n1 represents an integer of 2 to 4;
- and in Formula (2-1), a dotted line bonded to a carbon atom indicates a bond that is bonded to R1, and a dotted line bonded to an oxygen atom indicates a bond that is bonded to a methylene group)
- (in Formula (2-2), a dotted line bonded to a carbon atom indicates a bond that is bonded to R1, and a dotted line bonded to an oxygen atom indicates a bond that is bonded to a methylene group)
- (in Formula (2-3), n2 represents an integer of 2 to 4;
- and in Formula (2-3), a dotted line bonded to a carbon atom indicates a bond that is bonded to R6, and a dotted line bonded to an oxygen atom indicates a bond that is bonded to a methylene group)
- (in Formula (2-4), a dotted line bonded to a carbon atom indicates a bond that is bonded to R6, and a dotted line bonded to an oxygen atom indicates a bond that is bonded to a methylene group)
- (in Formula (3-1), n3 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 the methylene group on the side of R6)
- (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 the methylene group on the side of R6).
20 more elements
Dependencies are inferred from the claim text.