JP2529690B2 - Coating composition for magnetic recording media - Google Patents
Coating composition for magnetic recording mediaInfo
- Publication number
- JP2529690B2 JP2529690B2 JP62128970A JP12897087A JP2529690B2 JP 2529690 B2 JP2529690 B2 JP 2529690B2 JP 62128970 A JP62128970 A JP 62128970A JP 12897087 A JP12897087 A JP 12897087A JP 2529690 B2 JP2529690 B2 JP 2529690B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic recording
- coating composition
- recording media
- solvent
- fluorine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、磁気記録媒体用塗料組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coating composition for a magnetic recording medium.
［従来の技術］ 磁気記録媒体の表面潤滑剤として含ハロゲンポリエー
テルおよびその誘導体が有用であるが、表面塗布用の溶
媒としてフッ素系溶媒（主として、トリクロロフルオロ
エタン）が必要となる。フッ素系溶媒の蒸発速度が大き
いので均一な潤滑層が形成せず、およびコストが高いと
いう問題があった。[Prior Art] Halogen-containing polyethers and their derivatives are useful as surface lubricants for magnetic recording media, but a fluorine-based solvent (mainly trichlorofluoroethane) is required as a solvent for surface coating. Since the evaporation rate of the fluorine-based solvent is high, there are problems that a uniform lubricating layer cannot be formed and the cost is high.
［発明の目的］ 本発明の目的は、上記問題を解決し、フッ素系溶媒を
必要としない磁気記録媒体用塗料組成物を提供すること
にある。[Object of the Invention] An object of the present invention is to solve the above problems and provide a coating composition for a magnetic recording medium which does not require a fluorine-based solvent.
［発明の構成］ 本発明の要旨は、 （ａ）式： CHFCF2CF2OmCF2CF2CF2On （Ｉ） ［式中、ｎは０または正の整数、ｍは正の整数であっ
て、２≦ｍ＋ｎ≦200を満足する。］ で示される繰り返し構造を有する含フッ素ポリエーテ
ル、および （ｂ）フッ素系溶媒でない希釈用溶媒 から本質的になる磁気記録媒体用塗料組成物 に存する。Gist of the present invention Configuration of the Invention are, (a) formula: CHFCF 2 CF 2 O m CF 2 CF 2 CF during 2 O n (I) [wherein, n is 0 or a positive integer, m is a positive integer Therefore, 2 ≦ m + n ≦ 200 is satisfied. ] A coating composition for a magnetic recording medium consisting essentially of a fluorinated polyether having a repeating structure represented by: and (b) a diluting solvent which is not a fluorinated solvent.
式（Ｉ）中、各括弧内のくり返し単位の分子中での配
列は任意であり、必ずしも上記の順に配列していること
を意味するものではない。In formula (I), the arrangement of the repeating units in each parenthesis in the molecule is arbitrary and does not necessarily mean that they are arranged in the above order.
含フッ素ポリエーテルの製造に関しては、例えば、特
開昭60−137928号公報及び特開昭60−202212号公報に記
載されている。The production of the fluorinated polyether is described, for example, in JP-A-60-137928 and JP-A-60-202212.
含フッ素ポリエーテル（即ち、潤滑剤）により磁性体
上に潤滑層を形成するには、含フッ素ポリエーテルを希
釈用溶媒に溶解して磁性体上に吹き付けるか、磁性体全
体を溶液に浸漬してコーティングすればよい。To form a lubricating layer on a magnetic material with a fluorinated polyether (that is, a lubricant), dissolve the fluorinated polyether in a diluting solvent and spray it on the magnetic material, or immerse the entire magnetic material in a solution. Coating.
含フッ素ポリエーテルを塗布するために使用する希釈
剤用溶媒としては、汎用の安価な溶媒を使用することが
できる。希釈用溶媒としては、例えばアセトンまたはメ
チルエチルケトンなどのケトン、ジエチルエーテルなど
のエーテル、酢酸エチルなどのエステル等が挙げられ
る。As the diluent solvent used for applying the fluorinated polyether, a general-purpose inexpensive solvent can be used. Examples of the diluent solvent include ketones such as acetone or methyl ethyl ketone, ethers such as diethyl ether, and esters such as ethyl acetate.
［発明の効果］ 本発明によれば、潤滑層の形成は安価になり、均一な
潤滑層が形成されるので磁気記録媒体は優れた耐久性を
示す。[Effect of the Invention] According to the present invention, the formation of the lubricating layer becomes inexpensive, and the uniform lubricating layer is formed, so that the magnetic recording medium exhibits excellent durability.
［実施例］ 次に、実施例および比較例を示し、本発明を具体的に
説明する。EXAMPLES Next, the present invention will be specifically described by showing Examples and Comparative Examples.
実施例１ ＦCHFCF2CF2OxCF2CF2CF2OyCF2CF2CH2OH （x:y＝7:3、（ｘ＋ｙ）の平均値＝25） で示される含フッ素ポリエーテルを0.01重量％になるよ
うに、酢酸エチル中に溶解し、スピンコート法により、
塗膜が約100Åになるように塗布型ハードディスクにコ
ーティングした。Example 1 FCHFCF 2 CF 2 O x CF 2 CF 2 CF 2 O y CF 2 CF 2 CH 2 OH (x: y = 7: 3, (x + y) average value = 25) Dissolved in ethyl acetate so as to be 0.01% by weight, by spin coating,
The coating type hard disk was coated so that the coating film would be approximately 100Å.
このディスクについてCSSテスターによる耐久性テス
トを行った。10万回以上回転してもヘッドクラッシュが
生じなかった。A durability test was performed on this disc by a CSS tester. Head crash did not occur even after rotating 100,000 times or more.
比較例１ 含フッ素ポリエーテルの代わりに高級脂肪酸エステル
系潤滑剤を使用する以外は、実施例１と同様の操作を行
った。3000回を過ぎた時点でヘッドクラッシュが生じ
た。Comparative Example 1 The same operation as in Example 1 was performed except that a higher fatty acid ester lubricant was used instead of the fluorinated polyether. A head crash occurred after 3000 times.
比較例２ 潤滑剤としてパーフルオロポリエーテル（商品名フォ
ンブリンＹ−25、モンテフルオス製）、希釈用溶媒とし
てトリクロロトリフルオロエタンを使用して実施例１と
同様の操作を行った。33,000回でヘッドクラッシュが生
じた。Comparative Example 2 The same operation as in Example 1 was performed using perfluoropolyether (trade name Fomblin Y-25, manufactured by Montefluos) as a lubricant and trichlorotrifluoroethane as a diluent solvent. A head crash occurred after 33,000 times.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−113130（ＪＰ，Ａ) 特開 昭62−280294（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-61-113130 (JP, A) JP-A-62-280294 (JP, A)
Claims (1)
て、２≦ｍ＋ｎ≦200を満足する。］ で示される繰り返し構造を有する含フッ素ポリエーテ
ル、および （ｂ）フッ素系溶媒でない希釈用溶媒 から本質的になる磁気記録媒体用塗料組成物。1. Formula (a): CHFCF 2 CF 2 O m CF 2 CF 2 CF 2 O n (I) [wherein n is 0 or a positive integer, m is a positive integer, and 2 ≦ Satisfies m + n ≦ 200. ] The coating composition for magnetic recording media which consists essentially of a fluorine-containing polyether having a repeating structure represented by: and (b) a diluting solvent that is not a fluorine-based solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62128970A JP2529690B2 (en) | 1987-05-25 | 1987-05-25 | Coating composition for magnetic recording media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62128970A JP2529690B2 (en) | 1987-05-25 | 1987-05-25 | Coating composition for magnetic recording media |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63291993A JPS63291993A (en) | 1988-11-29 |
| JP2529690B2 true JP2529690B2 (en) | 1996-08-28 |
Family
ID=14997912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62128970A Expired - Lifetime JP2529690B2 (en) | 1987-05-25 | 1987-05-25 | Coating composition for magnetic recording media |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2529690B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61113130A (en) * | 1984-11-07 | 1986-05-31 | Daikin Ind Ltd | Lubricant for magnetic recording medium |
| JPH0631369B2 (en) * | 1986-05-28 | 1994-04-27 | 大塚化学株式会社 | Lubricant for thermoplastic plastics equipment |
-
1987
- 1987-05-25 JP JP62128970A patent/JP2529690B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63291993A (en) | 1988-11-29 |
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