Back to results
US 12,729,347 B2Granted
Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium
AssigneeResonac Corporation
InventorsNaoya Fukumoto, Yutaka Tanji
Life of this patent
Estimating the term…
Abstract
This fluorine-containing ether compound is a fluorine-containing ether compound represented by Formula (1). In Formula (1), X is Formula (2-1) to (2-5), and A is Formula (3-1) or (3-2). B is a perfluoropolyether chain. D has 2 to 4 polar groups, has an oxygen atom bonded to a methylene group adjacent to D, has 1 to 15 carbon atoms, and has 0 to 9 carbon atoms in a shortest distance between carbon atoms to which adjacent polar groups in D are bonded.
Claims13
A fluorine-containing ether compound represented by the following general formula (1):
- (in General Formula (1), X is a trivalent atomic group represented by any one of Formulae (2-1) to (2-5) below, A is a linking group represented by Formula (3-1) or Formula (3-2) below, three A's may be the same in part or in whole, or may be different from each other, B is a perfluoropolyether chain, three B's may be the same in part or in whole, or may be different from each other, D is a terminal group which has 2 to 4 polar groups, has an ether oxygen atom bonded to a methylene group adjacent to D, has 1 to 15 carbon atoms, and has 0 to 9 carbon atoms in a shortest distance between carbon atoms to which adjacent polar groups in D are bonded, and three D's may be the same as one another in part or in whole, or may be different from each other),
- (in Formula (2-4), a represents an integer of 0 to 5),
- (in Formula (2-5), b represents an integer of 0 to 5),
- (in Formula (3-1), n represents an integer of 0 to 6),
- (in Formula (3-2), m represents an integer of 1 to 2).
2 more elements
Dependencies are inferred from the claim text.