JPS60182013A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS60182013A JPS60182013A JP3684584A JP3684584A JPS60182013A JP S60182013 A JPS60182013 A JP S60182013A JP 3684584 A JP3684584 A JP 3684584A JP 3684584 A JP3684584 A JP 3684584A JP S60182013 A JPS60182013 A JP S60182013A
- Authority
- JP
- Japan
- Prior art keywords
- anhydride
- film
- higher carboxylic
- magnetic recording
- protective layer
- 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.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 14
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 16
- 239000011241 protective layer Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 claims abstract description 9
- 239000000758 substrate Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 3
- 150000008065 acid anhydrides Chemical class 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 5
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- -1 palmitic acid Chemical class 0.000 abstract description 3
- 229920000728 polyester Polymers 0.000 abstract description 3
- NGEZPLCPKXKLQQ-VOTSOKGWSA-N (e)-4-(3-methoxyphenyl)but-3-en-2-one Chemical compound COC1=CC=CC(\C=C\C(C)=O)=C1 NGEZPLCPKXKLQQ-VOTSOKGWSA-N 0.000 abstract description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 2
- 235000021314 Palmitic acid Nutrition 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract description 2
- 229910052804 chromium Inorganic materials 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 abstract description 2
- 229910017052 cobalt Inorganic materials 0.000 abstract description 2
- 239000010941 cobalt Substances 0.000 abstract description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000006297 dehydration reaction Methods 0.000 abstract description 2
- 238000007733 ion plating Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052759 nickel Inorganic materials 0.000 abstract description 2
- 229920006254 polymer film Polymers 0.000 abstract description 2
- 238000004544 sputter deposition Methods 0.000 abstract description 2
- 238000001771 vacuum deposition Methods 0.000 abstract description 2
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 abstract 2
- 235000021357 Behenic acid Nutrition 0.000 abstract 1
- 229940116226 behenic acid Drugs 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- KFEVDPWXEVUUMW-UHFFFAOYSA-N docosanoic acid Natural products CCCCCCCCCCCCCCCCCCCCCC(=O)OCCC1=CC=C(O)C=C1 KFEVDPWXEVUUMW-UHFFFAOYSA-N 0.000 abstract 1
- IJVLPVWXJLKHID-UHFFFAOYSA-N docosanoyl docosanoate Chemical compound CCCCCCCCCCCCCCCCCCCCCC(=O)OC(=O)CCCCCCCCCCCCCCCCCCCCC IJVLPVWXJLKHID-UHFFFAOYSA-N 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- POULHZVOKOAJMA-UHFFFAOYSA-N methyl undecanoic acid Natural products CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 abstract 1
- WVJVHUWVQNLPCR-UHFFFAOYSA-N octadecanoyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC(=O)CCCCCCCCCCCCCCCCC WVJVHUWVQNLPCR-UHFFFAOYSA-N 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 239000010409 thin film Substances 0.000 description 8
- 235000021355 Stearic acid Nutrition 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 3
- 239000008117 stearic acid Substances 0.000 description 3
- 150000008064 anhydrides Chemical class 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002120 nanofilm Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Lubricants (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は磁気記録媒体に関づるもので（＋５る。[Detailed description of the invention] The present invention relates to magnetic recording media (+5).
磁気テープや磁気ディスク等の磁気記録媒体の一秤に、
＾分子フィルム等のり休に強磁性金属を真空蒸着法やイ
オンブレーティング法等によりイ１看して強磁性金属薄
膜を形成しＩＣ薄膜型のものがある。このような薄膜型
の磁気記録媒体は、磁性層が１１１３傷し易く腐食し易
い等の欠点があり、このため通常は強磁竹金１ｉｉＳ
薄１１Ｑの表面に直接あるいは間接に保護層が設けられ
ている。しかしながら、従来の保護層は、潤滑性が低く
、耐久性やスチルライフが不十分であった。For one scale of magnetic recording media such as magnetic tape and magnetic disk,
There is an IC thin film type in which a ferromagnetic metal is applied to a molecular film or the like by a vacuum deposition method, an ion blating method, etc. to form a ferromagnetic metal thin film. Such thin-film magnetic recording media have drawbacks such as the magnetic layer being easily scratched and corroded.
A protective layer is provided directly or indirectly on the surface of the thin layer 11Q. However, conventional protective layers had low lubricity and insufficient durability and still life.
本発明は、以上の欠点を改良し、潤滑性客の優れた保護
層を有りる磁気記録媒体の提供を目的と−４−るもので
ある。The object of the present invention is to improve the above-mentioned drawbacks and provide a magnetic recording medium having a protective layer with excellent lubricity.
本発明は、上記の目的を達成りるために、基体に強磁性
金属薄膜及び保護層をｉｉ！ Ｇ−１に磁気記録媒体に
おいて、高級カルボン酸無水物から′／、する保護層を
設けることを特徴とする磁気゛記録媒体を提供するもの
である。In order to achieve the above object, the present invention provides a substrate with a ferromagnetic metal thin film and a protective layer. The present invention provides a magnetic recording medium characterized in that G-1 is provided with a protective layer made of a higher carboxylic acid anhydride.
以下、本発明を実施例に塁づい−（説明する。The present invention will be explained below based on embodiments.
基体としてはポリエステルＡ５ポリプロピレン等の高分
子フィ°ルムを用いる。この基体に、コバルト・やクロ
ム、ニッケル等の強磁性金属を真空蒸谷法やイオンプレ
ーディング法、スパッタリング法等により付着して強磁
性金属薄膜を形成する。そして、強磁性金属ａ？膜に無
水パルミチン酸や無水スデアリン酸、無水ド」リン酸等
の高級カルボン酸無水物を蒸着したりあるいはこれ等の
溶液等をｍ ｔｒｉ シて保護層を形成づる。高級カル
ボン酸無水物は、パルミチン酸ヤ）ステアリン酸、トコ
リーン酸等の高級カルボン酸の脱水反応により製造した
ものＣ１での融熱が５０ ’Ｃ以」二のものが好ましく
、それにり融点の低いものは液状に近くなり、１ｌｉｌ
滑性％１）強磁性金属７！ｌ膜との密机性が急激に低下
り−る。A polymer film such as polyester A5 polypropylene is used as the substrate. A ferromagnetic metal thin film such as cobalt, chromium, or nickel is deposited on this substrate by a vacuum vapor deposition method, an ion plating method, a sputtering method, or the like. And ferromagnetic metal a? A protective layer is formed on the film by vapor depositing a higher carboxylic acid anhydride such as palmitic anhydride, suderic anhydride, or phosphoric anhydride, or by pouring a solution thereof. The higher carboxylic acid anhydride is preferably one produced by the dehydration reaction of higher carboxylic acids such as palmitic acid, stearic acid, and tocoric acid, and has a heat of fusion at C1 of 50'C or more, and has a low melting point. The substance becomes almost liquid, 1 lil
Slipperiness%1) Ferromagnetic metal 7! The tightness with the l membrane decreases rapidly.
づなわら、強磁性金属薄膜には通常、表面に多少の酸化
皮膜が形成されており、保護層を形成している高級カル
ボン酸無水物の分子内に存在する２個のカルボニル基が
この酸化皮膜と反応して強い結合力を示す。そのため、
保護層は強磁性金属薄膜とのｌｆル性が向上し、剥離力
が向上づるので、潤滑性や耐久性、メチルライフが改良
される。However, a ferromagnetic metal thin film usually has some oxide film formed on its surface, and the two carbonyl groups present in the molecules of the higher carboxylic acid anhydride forming the protective layer form this oxide film. It reacts with and exhibits strong binding force. Therefore,
The protective layer has improved lubricity with the ferromagnetic metal thin film and improved peeling force, resulting in improved lubricity, durability, and methyl life.
特に、メチルライフ特性について、本発明の実施例と従
来例とにつき比較したところ表の通りの結果が得られた
。本発明の実施例１〉の製造条イ′１は、
ａ）３３体：厚さ１２μのポリ■スデルノイルム、１］
〉強磁性金属：Ｃｏ ：Ｎｉ ＝８ ： ２ （小徴比
）の合金、
Ｃ〉強磁性金属薄膜：保持力（ｉ８０Ｑｅ、ｄ）保護Ａ
：無水バルミヂン酸（ＦＡｌｉ点（３４℃）を５ Ｘ
１０−「Ｔ ｏｒｒの真空雰囲気中で蒸着、
したものであり、
実施例２〉は、実施例１〉にａ３い−（ｄ）の保訛漫を
無水ステアリン酸く融点７２℃）の３ｗｔ％１〜ル■ン
溶液を塗イｌｉ シて形成し、
従来例は、実施例１）においてｄ）の保護層をステアリ
ン酸の３ｗｔ％１〜ルエン溶液を塗布し形成しだらので
ある。In particular, when the examples of the present invention and the conventional examples were compared with respect to methyl life characteristics, the results shown in the table were obtained. The production strip A'1 of Example 1 of the present invention is as follows: a) 33 bodies: 12μ thick polyester sdernoil, 1]
〉Ferromagnetic metal: Co:Ni = 8: 2 (small ratio) alloy, C〉Ferromagnetic metal thin film: Coercive force (i80Qe, d) Protection A
: Valmidic anhydride (FAli point (34℃) 5X
Example 2 is the same as Example 1, except that 3 wt% of anhydrous stearic acid (melting point: 72°C) is added to Example 1. In the conventional example, the protective layer d) in Example 1) was formed by applying a 3 wt % stearic acid solution.
表から明らかな通り、本発明は従来例に比べ（６倍以上
となって、１３す、特に実施例１）では２３イ８以上で
あり、メチルライフが大幅に改善されでいる。As is clear from the table, the methyl life of the present invention is significantly improved compared to the conventional example (6 times or more, 13 times, especially Example 1), which is 23 times or more.
表
以上の通り、本発明によれば、保護層の剥離力を向上Ｃ
き潤泪性Ｘ’＋スチルライフ特性等を改良しつる磁気記
録媒体が１Ｅｌられる。As shown in the table above, according to the present invention, the peeling force of the protective layer is improved.
A magnetic recording medium with improved characteristics such as dryness X'+ still life characteristics has been developed.
特許出願人 日立コンデンサ株式会社Patent applicant: Hitachi Capacitor Co., Ltd.
Claims (1)
だ磁気記録媒体において、高級カルボン酸無水物からな
る保護層を設けることを特徴とする磁気記録媒体。 ＋２） ｉ！′！１級カルボジカルボン酸無水物５０℃
以にである特許請求の範囲第１項記載の磁気記録媒体。(1) A magnetic recording medium comprising a ferromagnetic metal film and an insulating layer on a substrate, characterized in that a protective layer made of a higher carboxylic acid anhydride is provided. +2) i! ′! Primary carbodicarboxylic acid anhydride 50℃
A magnetic recording medium according to claim 1, which is the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3684584A JPS60182013A (en) | 1984-02-28 | 1984-02-28 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3684584A JPS60182013A (en) | 1984-02-28 | 1984-02-28 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60182013A true JPS60182013A (en) | 1985-09-17 |
Family
ID=12481094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3684584A Pending JPS60182013A (en) | 1984-02-28 | 1984-02-28 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60182013A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58111128A (en) * | 1981-12-24 | 1983-07-02 | Ulvac Corp | Manufacture of abrasion resistant magnetic recording material |
| JPS58146026A (en) * | 1982-02-25 | 1983-08-31 | Hitachi Maxell Ltd | Magnetic recording medium |
| JPS58171722A (en) * | 1982-04-02 | 1983-10-08 | Sony Corp | Manufacture of metallic thin film type magnetic recording medium |
-
1984
- 1984-02-28 JP JP3684584A patent/JPS60182013A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58111128A (en) * | 1981-12-24 | 1983-07-02 | Ulvac Corp | Manufacture of abrasion resistant magnetic recording material |
| JPS58146026A (en) * | 1982-02-25 | 1983-08-31 | Hitachi Maxell Ltd | Magnetic recording medium |
| JPS58171722A (en) * | 1982-04-02 | 1983-10-08 | Sony Corp | Manufacture of metallic thin film type magnetic recording medium |
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