Resonac Corporation

Tsuyoshi Kato

Naoya Fukumoto

Daisuke Yagyu

Katsumi Murofushi

Natsumi Shibata

Ayano Asano

Masaki Nanko

Shunya Suzuki

This fluorine-containing ether compound is represented by formula (1) shown below.R—CH—R—CH—R  (1)

Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium

What is provided is a fluorine-containing ether compound represented by the following formula.R—CH—R—CH—OCHCH(OH)CHO—CH—R—CH—R(In the formula, Rand Rare perfluoropolyether chains, and Rand Rare terminal groups having two or three polar groups, in which individual polar groups are bound to different carbon atoms and the carbon atoms to which the polar groups are bound are bound to each other via a linking group having a carbon atom to which the polar groups are not bound).

A fluorine-containing ether compound represented by the following formula (1) is provided.R—CH—R—CHOCHCH(OH)—(CH)—CH(OH)CHOCH—R—CH—R  (1)(in the formula (1), n is an integer of 2 to 6, Ris a perfluoropolyether chain, Ris —OCHCH(OH)CHO(CH)OH (m in the formula is an integer of 2 to 4)).

A fluorine-containing ether compound represented by a formula (1) shown below.R—(O(CH))-[A]-[B]—O—CH—R—CH—R  (1)(In the formula (1), Ris an alkyl group which may have a substituent, or an organic group having at least one double bond or triple bond. Further, a represents an integer of 2 to 4, and b is 0 or 1. [A] is represented by a formula (2): —(OCHCH(OH)CH)— (wherein c is 1 or 2). [B] is represented by a formula (3): —(O(CH)CH(OH)CH)— (wherein d is 0 or 1, and e represents an integer of 2 to 4). However, the sum of c in the formula (2) and d in the formula (3) is 2. Ris a perfluoropolyether chain. Ris represented by a formula (4): —(OCHCH(OH)CH)—O—CH(CH)OH (wherein f represents an integer of 2 to 5).

There is provided a fluorine-containing ether compound represented by the following formula. R—R—CH—R—CH—OCHCH(OH)CHO—CH—R—CH—R—R(in the formula, Rrepresents a perfluoropolyether chain; Rand Rrepresent a divalent linking group having a polar group and may be the same or different from each other; Rand Rrepresent a terminal group bonded to an oxygen atom of Ror Rand may be the same or different from each other; and at least one of Rand Ris an organic group having 1 to 8 carbon atoms and at least one of hydrogens included in the organic group is substituted by a cyano group).

A fluorine-containing ether compound represented by the following formula (1) is provided. R—CH—R—CH—R(1) (In the formula (1), Ris an alkoxy group having 1 to 10 carbon atoms, Ris a perfluoropolyether chain, Ris —OCHCH(OH)CHO(CH)OH (in in the formula is an integer of 2 to 4).)

A fluorine-containing ether compound represented by the following formula (1).CH—[O—R—O—CH—R—CH—R]  (1)(in the formula (1), n is an integer of 2 or 3, Ris any one of —CHCH—, —CHCHCH— and —CHCH(OH)CH—, Ris a perfluoropolyether chain, Ris —OCHCH(OH)CHO(CH)OH (m in the formula is an integer of 2 to 4)).

Fluorine-containing ether compound, lubricant for magnetic recording medium and magnetic recording medium

This fluorine-containing ether compound is a fluorine-containing ether compound represented by formula (1).R&#x2014;X&#x2014;R&#x2014;CH&#x2014;R&#x2014;CH&#x2014;R&#x2003;&#x2003;(1)(In formula (1), Ris an alkenyloxy group of 2 to 8 carbon atoms or an alkynyloxy group of 3 to 8 carbon atoms. Ris represented by formula (2) shown below. In formula (2), a represents an integer of 1 to 3. X is represented by formula (3) shown below. In formula (3), b represents an integer of 1 to 5, Y is a divalent linking group that is bonded to a carbon atom in formula (2), and R represents an alkyl group of 1 to 6 carbon atoms or H. Rrepresents a perfluoropolyether chain. Rrepresents a terminal group containing two or three polar groups, wherein each polar group is bonded to a different carbon atom, and the carbon atoms to which the polar groups are bonded are bonded to each other via a linking group containing a carbon atom to which a polar group is not bonded.)

There is provided a fluorine-containing ether compound represented by the following formula. R&#x2014;R&#x2014;CH&#x2014;R&#x2014;CH&#x2014;OCHCH(OH)CHO&#x2014;CH&#x2014;R&#x2014;CH&#x2014;R&#x2014;R(in the formula. Rrepresents a perfluoropolyether chain; Rand Rrepresent a divalent linking group having a polar group; Rand Rrepresent a terminal group bonded to an oxygen atom of Ror R; and at least one of Rand Ris any one selected from the group consisting of an alkenyl group having 2 to 8 carbon atoms, an alkynyl group having 3 to 8 carbon atoms, an aromatic hydrocarbon-containing group, and an aromatic heterocycle-containing group).

The fluorine-containing ether compound is represented by the following formula (1): R&#x2014;R&#x2014;CH&#x2014;R&#x2014;CH&#x2014;R. In the formula (1), Ris represented by the following formula (2), Ris represented by the following formula (3), Ris a perfluoropolyether chain, and Ris an organic end group different from R&#x2014;R&#x2014; and contains two or three polar groups, wherein each polar group is bonded to a different carbon atom, and the carbon atoms to which the polar groups are bonded are bonded to one another via a linking group containing a carbon atom to which the polar group is not bonded. In the formula (2), Ris an alkoxy group selected from the group consisting of a methoxy, an ethoxy and a propoxy group. In the formula (3), w is 2 or 3.

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Ichihara, Japan

Tsuyoshi Kato