Perfluoropolyether compound, and lubricant and magnetic disk each using same
AssigneeMoresco Corporation
InventorTomomi Hatta
Life of this patent
Estimating the term…
Abstract
Provided is a perfluoropolyether compound that has a high degree of solubility in a fluorine-based solvent, has high heat resistance, and exhibits a strong interaction with magnetic disks. A perfluoropolyether compound having a structure represented by formula (1): R1—CH2—Rf—(L—Rf)p—CH2—R2 (1) In formula (1), Rf is a perfluoropolyether group, R1 and/or R2 is/are a group having a structure represented by formula (2), and an OH group is further present between Rf and a molecular terminal.
Claims15
A perfluoropolyether compound having a structure represented by formula (1):
- R1—CH2—Rf—(L—Rf)p—CH2—-R2 (1)
- where Rf is a perfluoropolyether group,
- L is a linking group being composed of a C3-C20 hydrocarbon group having an OH group, at least one carbon atom in a main chain of the C3-C20 hydrocarbon group is optionally substituted with an oxygen atom, and p is 0, and
- R1 is a group having a structure represented by formula (2):
- where R4 is a C3-C10 hydrocarbon group having an OH group, at least one carbon atom in a main chain of the C3-C10 hydrocarbon group is optionally substituted with an oxygen atom, R3 is a C1-C2 hydrocarbon group, and q is an integer of 1 to 10, and
- R2 is a group having the structure represented by the formula (2) or a group having a structure represented by formula (3):
- —R5—OH (3)
- where R5 is a C3-C10 hydrocarbon group having an OH group, and at least one carbon atom in a main chain of the C3-C10 hydrocarbon group is optionally substituted with an oxygen atom.
A perfluoropolyether compound having a structure represented by formula (1):
- R1—CH2—Rf—(L—Rf)p—CH2—R2 (1)
- where Rf is a perfluoropolyether group,
- L is a linking group being composed of a C3-C20 hydrocarbon group having an OH group, at least one carbon atom in a main chain of the C3-C20 hydrocarbon group is optionally substituted with an oxygen atom, and p is 1, and
- R1 is a group having a structure represented by formula (2):
- where R4 is a C3-C10 hydrocarbon group having an OH group, at least one carbon atom in a main chain of the C3-C10 hydrocarbon group is optionally substituted with an oxygen atom, R3 is a hydrogen atom or a C1-C2 hydrocarbon group, and q is an integer of 2 to 10 when R3 is a hydrogen atom, and q is an integer of 1 to 10 when R3 is a C1-C2 hydrocarbon group, and
- R2 is a group having the structure represented by the formula (2) or a group having a structure represented by formula (3):
- —R5—OH (3)
- where R5 is a C3-C10 hydrocarbon group having an OH group, and at least one carbon atom in a main chain of the C3-C10 hydrocarbon group is optionally substituted with an oxygen atom.
A perfluoropolyether compound having a structure represented by formula (1):
- R1—CH2—Rf—(L—Rf)p—CH2—R2 (1)
- where Rf is a perfluoropolyether group,
- L is a linking group being composed of a C3-C20 hydrocarbon group having an OH group, at least one carbon atom in a main chain of the C3-C20 hydrocarbon group is optionally substituted with an oxygen atom, and p is 0, and
- R1 is a group having a structure represented by formula (2):
- where R4 is a C3-C10 hydrocarbon group having an OH group, at least one carbon atom in a main chain of the C3-C10 hydrocarbon group is optionally substituted with an oxygen atom, R3 is a hydrogen atom, and q is an integer of 4 to 10, and
- R2 is a group having the structure represented by the formula (2) or a group having a structure represented by formula (3):
- —R5—OH (3)
- where R5 is a C3-C10 hydrocarbon group having an OH group, and at least one carbon atom in a main chain of the C3-C10 hydrocarbon group is optionally substituted with an oxygen atom.
Dependencies are inferred from the claim text.