FLUORINE-CONTAINING ETHER COMPOUND, LUBRICANT FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM
申请人:SHOWA DENKO K.K.
公开号:US20210188766A1
公开(公告)日:2021-06-24
Provided is a fluorine-containing ether compound that can be suitably used as a material for a lubricant for a magnetic recording medium, capable of forming a lubricant layer having excellent chemical substance resistance and wear resistance even when the thickness is small. A fluorine-containing ether compound represented by the following formula (1):
R
1
—R
2
—CH
2
—R
3
—CH
2
—R
4
—R
5
(1)
In the formula (1), R
3
is a perfluoropolyether chain. R
2
and R
4
are divalent linkage groups having a polar group, and may be the same or different. R
1
and R
5
are terminal groups bonded to R
2
or R
4
, which may be the same or different, and at least one of R
1
and R
5
is an organic group having 1 to 8 carbon atoms wherein one or more hydrogen atoms of the organic group is substituted with a cyano group.
提供了一种含氟醚化合物,可适当用作磁记录介质润滑剂的材料,能够形成具有优异化学物质耐受性和耐磨性的润滑剂层,即使厚度较小也能保持这些性能。具有以下式(1)表示的含氟醚化合物:
R1—R2—CH2—R3—CH2—R4—R5(1)
在式(1)中,R3是全氟聚醚链。R2和R4是具有极性基团的二价连接基团,可以相同也可以不同。R1和R5是与R2或R4结合的末端基团,可以相同也可以不同,而且R1和R5中至少有一个是具有1至8个碳原子的有机基团,其中有一个或多个氢原子被氰基取代。