Showa Denko K.k.

Ryuuta Miyasaka

Hiroyuki Tomita

Katsumi Murofushi

Naoya Fukumoto

Naoko Ito

Yuta Yamaguchi

Tsuyoshi Kato

Daisuke Yagyu

Ichiro Ota

Shoko Uetake

Hiroko Hattori

Michio Seri

Yoshishige Okuno

Takuya Minami

A fluorine-containing ether compound of the present invention is represented by the following General Formula (1). (In the General Formula (1), X is a trivalent atom or a trivalent atom group, A is a linking group including at least one polar group, B is a linking group having a perfluoropolyether chain, and D is a polar group or a substituent having a polar group at the end.)[Chem. 1]XA-B-D)&#x2003;&#x2003;(1)

Magnetic recording medium, fluorine-containing ether compound and lubricant for magnetic recording medium

A fluorine-containing ether compound according to the present invention is a fluorine-containing ether compound represented by the following General Formula (1). 

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

A lubricant for a magnetic recording medium capable of forming a lubricant layer having excellent adhesion to a protective layer is provided. A lubricant for a magnetic recording medium contains a fluorine-containing ether compound in which a group having an ethylenic carbon-carbon double bond is disposed at one or both terminals of a perfluoroalkyl polyether chain. It is preferable that the group having the ethylenic carbon-carbon double bond is disposed at one terminal of the perfluoroalkyl polyether chain, and a hydroxyl group is disposed at other terminal. It is preferable that the lubricant for a magnetic recording medium contains a compound in which one or more functional groups selected from a hydroxyl group, an amino group, an amido group and a carboxyl group is disposed at one or both terminals of a perfluoroalkyl polyether chain.

Lubricant for magnetic recording medium, and method for producing magnetic recording medium

A fluorine-containing ether compound represented by Formula (1) is provided.R&#x2014;R&#x2014;CH&#x2014;R&#x2014;CH&#x2014;R&#x2014;R&#x2003;&#x2003;(1)(In Formula (1), Rand Reach represents a group having a heterocyclic ring and may be the same as or different from each other, Rand Reach represents a divalent linking group having a polar group and play be the same as or different from each other, and Rrepresents a perfluoropolyether chain.)

The present invention relates to a fluorine-containing ether compound represented by Formula (1),R&#x2014;R&#x2014;CH&#x2014;R&#x2014;CH&#x2014;R&#x2003;&#x2003;(1).(In Formula (1), Ris an end group including an organic group having at least one double bond or triple bond, Ris a divalent linking group bonded to Rby etheric oxygen, Ris a perfluoropolyether chain, Ris an end group having two or three polar groups with each polar group being bonded to different carbon atoms, and the carbon atoms, to which the polar groups are bonded, being bonded to each other via a linking group including carbon atoms to which the polar groups are not bonded.)

A fluorine-containing ether compound represented by Formula (1) is provided;R&#x2014;R&#x2014;CH&#x2014;R&#x2014;CH&#x2014;R&#x2014;R&#x2003;&#x2003;(1)(In Formula (1), Rand Rmay be the same as or different from each other and each represents an alkenyl group having 2 to 8 carbon atoms or an alkynyl group having 3 to 8 carbon atoms, Rand Rmay be the same as or different from each other and each represents a divalent linking group having a polar group, and Rrepresents a perfluoropolyether chain, with a proviso that Rand Rare, and Rand Rare divided due to the presence of an atom other than the carbon atom such as an oxygen atom).

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Ichihara, Japan

Ryuuta Miyasaka