Resonac Corporation

Natsumi Shibata

Tsuyoshi Kato

Naoya Fukumoto

Daisuke Yagyu

Masaki Nanko

Ayano Asano

Katsumi Murofushi

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 Formula (1) is provided.R—O—R—CH—R—CH—R—R  (1)(in the formula, Ris a perfluoropolyether chain; Ris an alkenyl group having 2 to 8 carbon atoms or an alkynyl group having 3 to 8 carbon atoms; Rand Rare each independently a divalent linking group having one or more hydroxyl groups; and —Ris a group represented by Formula (2) shown below.)—O—(CH)—N—RR  (2)(in the formula, g is an integer of 2 or 3; Rand Rare the same or different saturated aliphatic groups; and Rand Rmay form a ring structure together with a nitrogen atom.)

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 formula (1) is provided. The fluorine-containing ether compound is represented by the following formula (1). R—R—CH—R—CH—R(1) (Ris a perfluoropolyether chain; Ris the formula (2), a in the formula (2) is an integer of 2 or 3, Rand Rare the same or different substituents. Rand Rmay form a ring structure together with a nitrogen atom; Ris the formula (3), b in the formula (3) is an integer of 1 to 3; Ris a terminal group having two or three polar groups, in which individual polar groups bond to different carbon atoms and the carbon atoms to which the polar groups bond are bonded to each other through a linking group having a carbon atom to which the polar groups do not bond.)

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.)

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Ichihara, Japan

Natsumi Shibata