Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium
A fluorine-containing ether compound according to the present invention is a fluorine-containing ether compound represented by the following General Formula (1).
1. A fluorine-containing ether compound represented by the following General Formula (1):
(in the formula, A is a linking group represented by the following Formula (9), B is any of the following Formula (2), the following Formula (3), the following Formula (4) and the following Formula (5), D is any of a hydroxyl group, the following Formula (6), the following Formula (7) and the following Formula (8), and 1 is an integer of 1 to 10),
(in the formula, m is an integer of 1 to 30, and n is an integer of 1 to 30),
(in the formula, m is an integer of 1 to 30),
(in the formula, p is an integer of 1 to 30),
(in the formula, q is an integer of 1 to 30),
(in the formula, r is an integer of 0 to 5),
(in the formula, s is an integer of 0 to 5),
(in the formula, t is an integer of 1 to 5),
(in the formula, u is an integer of 1).
2. The fluorine-containing ether compound according to claim 1 ,
wherein the number-average molecular weight is in a range of 1,000 to 10,000.
3. The fluorine-containing ether compound according to claim 1 ,
wherein the compound represented by General Formula (1) is represented by the following Formula (10):
(in the formula, Rf 1 is represented by the following Formula (11), and each of m and n is an integer of 1 to 30),
[Chem. 11]
—(OCF 2 CF 2 ) m (OCF 2 ) n — (11)
4. The fluorine-containing ether compound according to claim 1 ,
wherein the compound represented by General Formula (1) is represented by the following Formula (12):
(in the formula, Rf 1 is represented by the following Formula (11), and each of m and n is an integer of 1 to 30),
[Chem. 13]
—(OCF 2 CF 2 ) m (OCF 2 ) n — (11)
5. The fluorine-containing ether compound according to claim 1 ,
wherein the compound represented by General Formula (1) is represented by the following Formula (13):
(in the formula, Rf 2 is represented by the following Formula (14), and m is an integer of 1 to 30),
[Chem. 15]
—(OCF 2 CF 2 ) m — (14)
6. The fluorine-containing ether compound according to claim 1 ,
wherein the compound represented by General Formula (1) is represented by the following Formula (15):
(in the formula, Rf 2 is represented by the following Formula (14), and m is an integer of 1 to 30)
[Chem. 17]
—(OCF 2 CF 2 ) m — (14)
7. The fluorine-containing ether compound according to claim 1 ,
wherein the compound represented by General Formula (1) is represented by the following Formula (16):
(in the formula, Rf 2 is represented by the following Formula (14), and m is an integer of 1 to 30),
[Chem. 19]
—(OCF 2 CF 2 ) m — (14)
8. The fluorine-containing ether compound according to claim 1 ,
wherein the compound represented by General Formula (1) is represented by the following Formula (17):
(in the formula, Rf 1 is represented by the following Formula (11), and m and n are integers of 1 to 30),
[Chem. 21]
—(OCF 2 CF 2 ) m (OCF 2 ) n — (11)
9. A lubricant for a magnetic recording medium comprising the fluorine-containing ether compound according to claim 1 .
10. A magnetic recording medium in which at least a magnetic layer, a protective layer, and a lubricating layer are sequentially provided on a substrate,
wherein the lubricating layer consists of the lubricant for a magnetic recording medium according to claim 9 .
11. The magnetic recording medium according to claim 10 ,
wherein the average film thickness of the lubricating layer is 0.5 nm to 3 nm.