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US 12,715,960 B2Granted
Fluorine-containing ether compound, lubricant for magnetic recording medium and magnetic recording medium
AssigneeResonac Corporation
InventorsDaisuke Yagyu, Tsuyoshi Kato, Naoya Fukumoto, Ayano Asano, Masaki Nanko, Yutaka Tanji, Shoko Uetake
Life of this patent
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Abstract
The present invention provides a fluorine-containing ether compound represented by the following Formula. R1-[B]-[A]-CH2—R2—CH2-[C]-[D]-R3 (R2 is a perfluoropolyether chain; [A] is Formula (2-1); [B] is Formula (2-2); [C] is Formula (3-1); [D] is Formula (3-2); R3 is Formula (4); and R1 is a terminal group.)
Claims16
A fluorine-containing ether compound represented by Formula (1) shown below:
- R1-[B]-[A]-CH2—R2—CH2-[C]-[D]-R3 (1)
- (in Formula (1), R2 is a perfluoropolyether chain;
- [A] is represented by Formula (2-1) shown below, and in Formula (2-1), a is an integer of 0 to 3;
- [B] is represented by Formula (2-2) shown below, and in Formula (2-2), b is an integer of 0 to 3, and c is an integer of 2 to 5;
- provided that, a sum of values of a and b is 1 to 3;
- in Formula (1), [A] and [B] may be interchanged;
- [C] is represented by Formula (3-1) shown below, and in Formula (3-1), d is an integer of 0 to 2;
- [D] is represented by Formula (3-2) shown below, and in Formula (3-2), e is an integer of 0 to 2, and f is an integer of 2 to 5;
- provided that, a sum of values of d and e is 1 or 2;
- in Formula (1), [C] and [D] may be interchanged;
- R3 is a branched terminal group having 3 to 30 carbon atoms and represented by Formula (4) shown below;
- in Formula (4), L represents an integer of 0 to 6;
- in Formula (4), Y1 and Y2 are each independently a hydrocarbon group containing one primary hydroxyl group and optionally containing an ether oxygen atom;
- in Formula (4), Y3 is a hydrogen atom or a hydrocarbon group containing one primary hydroxyl group and optionally containing an ether oxygen atom;
- and R1 and R3 are terminal groups which may be the same or may be different from each other)
12 more elements
Dependencies are inferred from the claim text.