JPH0224825A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPH0224825A JPH0224825A JP17464188A JP17464188A JPH0224825A JP H0224825 A JPH0224825 A JP H0224825A JP 17464188 A JP17464188 A JP 17464188A JP 17464188 A JP17464188 A JP 17464188A JP H0224825 A JPH0224825 A JP H0224825A
- Authority
- JP
- Japan
- Prior art keywords
- fatty acid
- magnetic recording
- ester
- recording medium
- branched structure
- 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
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 24
- 229930195729 fatty acid Natural products 0.000 claims abstract description 24
- 239000000194 fatty acid Substances 0.000 claims abstract description 24
- 239000000314 lubricant Substances 0.000 claims abstract description 20
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 14
- 150000002148 esters Chemical class 0.000 claims abstract description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims 6
- 229920006395 saturated elastomer Polymers 0.000 claims 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 230000001050 lubricating effect Effects 0.000 abstract 1
- -1 fatty acid fatty acid ester Chemical class 0.000 description 9
- 230000008018 melting Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- QQZOPKMRPOGIEB-UHFFFAOYSA-N 2-Oxohexane Chemical compound CCCCC(C)=O QQZOPKMRPOGIEB-UHFFFAOYSA-N 0.000 description 1
- 235000001270 Allium sibiricum Nutrition 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Magnetic Record Carriers (AREA)
- Lubricants (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、ａｌ磁気記録媒体係わり、さらに詳しくはそ
の潤滑剤の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an Al magnetic recording medium, and more particularly to improvement of a lubricant thereof.
従来より、磁気記録媒体の走行安定性、耐久性等を同上
させるため、 ｎ＊脂肪酸脂肪酸エステル流動パラフィ
ン、シリコンオイルなどの各種間滑剤が用いられて−る
。しかしながら、最近の磁気記録媒体の便用範囲が広が
り、その使用条件１ｗ！。Conventionally, in order to improve the running stability, durability, etc. of magnetic recording media, various lubricants such as n* fatty acid fatty acid ester liquid paraffin and silicone oil have been used. However, recently the range of useful magnetic recording media has expanded, and the usage conditions are 1w! .
用環境番などが厳しくなり、従来の潤滑剤では十分な性
能が得られていない。特にビデオチーブでの低温Ｉ／ｃ
ｊＩＩ−けるステル特性に問題があった。これは従来の
潤滑剤で蝶、低温での？１１ａ性ｔ−維持する几め低融
点、低粘度の物質を用いると１分子量の小さい物質を選
ぶことになる。この低分子量の物質は、ｊ！１布時ある
いは媒体の保管時等で磁性！−から揮散しｆすく、媒体
の耐久性に問題が生ずる。Due to stricter operating environment standards, conventional lubricants are no longer providing sufficient performance. Especially low temperature I/C in video chive
There was a problem with the stealth characteristics of JII. Is this a traditional lubricant butterfly at low temperatures? If a substance with a low melting point and low viscosity is used to maintain the properties 11a and t-, a substance with a small molecular weight will be selected. This low molecular weight substance is j! Magnetic when 1 cloth or when storing media! - This causes problems with the durability of the medium.
このため高融点の潤滑剤を混入すると、この潤滑剤が低
温時に固化し、 ｍｔ！：を−表面に析出し、ドロップ
アウトが増加するという欠点が発生する。For this reason, if a lubricant with a high melting point is mixed in, this lubricant will solidify at low temperatures, causing mt! : is deposited on the surface, resulting in the disadvantage of increased dropout.
この発明は上記従来の磁気記録媒体が持ってい友低温時
の潤滑性の低下という欠点を解決し、以って、耐久性に
優れた磁気記録媒体を提供することを目的とする。It is an object of the present invention to solve the drawback of the conventional magnetic recording medium, which is a decrease in lubricity at low temperatures, and to provide a magnetic recording medium with excellent durability.
Ｊ：記欠点を解決するため、鋭意研究を行った結果、同
一分子量の場合、融点ができるだけ低い脂肪酸エステル
が低温時の潤滑性も低下せず、さらにスチル耐久性も劣
化しないことを見出し１本発明をなすに至り九。J: In order to solve this problem, we conducted intensive research and found that fatty acid esters with the lowest melting point of the same molecular weight do not reduce lubricity at low temperatures and also do not deteriorate still durability. I came up with an invention.
上記の条件を一足する脂肪酸エステルとしては。As a fatty acid ester that satisfies the above conditions.
分岐構造を有するアルコールと各檀脂肪酸とよりなる脂
肪酸エステルがある。There are fatty acid esters consisting of alcohols with a branched structure and various fatty acids.
これは分岐構造を有するアルコールよりなる脂肪酸エス
テルは直鎖構造よりなる脂肪酸エステルに比し、同一分
子量の場合、融点が低く、また粘度も低くなるからと推
測している。また同一融点の場合１分岐構造の脂肪酸エ
ステルは直鎖の脂肪酸エステルよりも分子量が大きくな
るので、１１！布工程のさいとか、磁気記録媒体の保管
時等での潤滑剤の揮発が少なくなることが記録媒体の耐
久性を同とさせるものと考えている。This is presumed to be because a fatty acid ester made of an alcohol having a branched structure has a lower melting point and lower viscosity than a fatty acid ester made of a linear structure when the molecular weight is the same. Furthermore, in the case of the same melting point, a fatty acid ester with a monobranched structure has a larger molecular weight than a linear fatty acid ester, so 11! It is believed that less volatilization of the lubricant during fabric processing or storage of magnetic recording media will improve the durability of the recording media.
上記脂肪酸エステルは、単独で使用しても良好な潤滑効
果を示すが、磁気記録媒体の使用条件が厳しくなり、さ
らに広い使用条件でも潤滑性を確保するためには、従来
より開用されている潤滑剤と併用することもできる。こ
れらの潤滑剤のうち特に脂肪酸との併用が望ましい。The above-mentioned fatty acid esters exhibit good lubrication effects even when used alone, but as the usage conditions for magnetic recording media become stricter, in order to ensure lubricity even under wider usage conditions, they have been used for a long time. It can also be used in conjunction with a lubricant. Among these lubricants, combination use with fatty acids is particularly desirable.
以下に本発明の実施例につ＠説明する。 Examples of the present invention will be described below.
実施例１
金属鉄感性粉末 ８０部塩化ビニ
ル−酢酸ビニル−ビニルアルコール共重合体（ＵＣＣ社
＃ＶＡＧＨ） １６％カーボンブラック
２部α−Ａｌｔｏｓ
４１ｉＴ５ポリウレタン樹脂
８部潤滑剤（ＣＨｓ （ＣＨｔ
） ｓｍ Ｃ００ＣＨｚＣＨ（ＣＨｘ ） ｓ Ｃｈｉ
ｓ ）（ＣＨｚ ） ｓｃｕｍ
１．５部
メチルブチルケトン ６１ＮＳトル
エン ６１部と記組成物を
ボールミル中で７２時間混合分散し、これにさらにポリ
イソシアネート化合物（式日薬品社製、タネネートＬ）
４部を＃７ＪＵＬ、て、さら１７ｃ２０分混合分散して
磁性態勢を調装した。この塗料を厚さ１２μ鴨のポリエ
ステルフィルム上にｊＩｉ、燥後の厚さが３μ慣となる
ように塗布、乾燥し、８部面処理した後、所定の幅にス
リットし、磁気テープ全作製した。Example 1 Metallic iron-sensitive powder 80 parts Vinyl chloride-vinyl acetate-vinyl alcohol copolymer (UCC #VAGH) 16% carbon black
Part 2 α-Altos
41iT5 polyurethane resin
8 parts lubricant (CHs (CHt
) sm C00CHzCH(CHx) s Chi
s)(CHz) scum 1.5 parts Methyl butyl ketone 61NS Toluene 61 parts and the above composition were mixed and dispersed in a ball mill for 72 hours, and then a polyisocyanate compound (Tanenate L, manufactured by Shikinichi Yakuhin Co., Ltd.) was added.
4 parts were added to #7JUL and mixed and dispersed for an additional 17cm and 20 minutes to adjust the magnetic state. This paint was applied onto a polyester film with a thickness of 12 μm to a thickness of 3 μm after drying, dried, treated on 8 parts, and then slit to a predetermined width to produce the entire magnetic tape. .
実施例２
実施例１での潤滑剤に代えて
ＣＨｓ （ＣＨｘ ） ｔＣＨ−ｃＨ（Ｃｆ（２） ｔ
Ｃ００Ｃ山ＣｋＬＣ山ＣｋｌＣｋｌｚ ＣＨＣＨｘ−
ＣＨｓ
ＣＨｚＣＨｈＣＨ３
全同量用いた以外は実施例１と同様にして磁気テープを
作製し友。Example 2 In place of the lubricant in Example 1, CHs (CHx) tCH-cH(Cf(2) t
C00C mountain CkLC mountain CklCklz CHCHx-
A magnetic tape was prepared in the same manner as in Example 1 except that all the same amounts of CHs CHzCHhCH3 were used.
芙逓例３ 実施例１での潤滑剤に代えて。Example 3 In place of the lubricant in Example 1.
を同量用いた以外は、実施例１と同様にして磁気テープ
を作製し友。A magnetic tape was prepared in the same manner as in Example 1, except that the same amount of was used.
実施例４
実施例１の潤滑剤に代えて
Ｃ１１ｓＣＣｋｈ） ２ｏｃＯＯｃＨｚｃＨ（ｃＨ意）
ｓｃＨｍＨｓＣＨｓ
を同黛用い之以外は、実施例１と同様にして磁気テープ
を作製した。Example 4 In place of the lubricant of Example 1, C11sCCkh) 2ocOOcHzcH (cH)
A magnetic tape was produced in the same manner as in Example 1 except that scHmHsCHs was used in the same manner.
実施例５
実施例１において潤滑剤として、実施例１で用いた潤滑
剤に〃口えて、さらにｚ’）スチン酸１．０ｍを加えた
こと以外は実施例１と同様にして磁気テープを作製し比
。Example 5 A magnetic tape was produced in the same manner as in Example 1 except that 1.0 m of z') stinic acid was added to the lubricant used in Example 1 as a lubricant. comparison.
比較例
実施例１（２）ｆＩ４滑剤に代えて
ＣＨｓ ＣＣｋｈ ）ｔｓｃＯｏ（ＣＨ鵞） 酪ＣＨｓ
ｔ−閤量用いた以外は、実施例１と同様にして感慨テー
プを作製し友。Comparative Example Example 1 (2) CHs in place of fI4 lubricant CCkh ) tscOo (CH Go) Buta CHs
An impression tape was prepared in the same manner as in Example 1, except that the t-weight was used.
上記各実施例、比較例で得られた磁気テープの２０℃、
ｌＯ％ＲＨおよび一５℃、 ２０％Ｒｆ（１７）環境下
での出性／ＩＩの摩擦係数、および−５℃、２０％ＲＨ
の環境でのステル耐久性を測定した。20°C of the magnetic tape obtained in each of the above Examples and Comparative Examples,
lO%RH and -5°C, 20%Rf (17) friction coefficient of output/II under environment, and -5°C, 20%RH
Stell durability was measured in this environment.
ＩＩｌ擦係数は表面粗度０．２ｇ、外径４ｕの円筒状ビ
ンに磁気テープを巻き角１５０度で巻きつけ、荷１２１
ｇ、送９速度ｌ、４ａｎ／＠＠ｃで送り、３回目の摩擦
係数ｔ−測測定て、試料テープの摩擦係数とじ九。IIl Friction coefficient is calculated by wrapping a magnetic tape around a cylindrical bottle with a surface roughness of 0.2g and an outer diameter of 4u at a winding angle of 150 degrees.
g, feed speed 1, 4an/@@c, measure the third friction coefficient t, and measure the friction coefficient of the sample tape.
スチル耐久性試験は、所定条件下でビデオテープレコー
ダに装填し、静止画像を再生し、出力が最初の出力に比
し３ｄＢ低下するまでの時間で測定し比。In the still durability test, a still image is loaded into a video tape recorder under specified conditions, and a still image is played back, and the ratio is measured by the time it takes for the output to decrease by 3 dB compared to the initial output.
以と説明し九ように磁気記録媒体の潤滑剤として、炭素
数８以Ｊ：１５以下で分岐構造ｆ７ｒ：有するアルコー
ルと、ｆＩｉ肪酸とのエステルを用いることによって、
低温時でも良好な潤滑効果を示し、よって磁気記録媒体
の低温時の走行安定性が同１し。As explained below, by using an ester of an alcohol having a branched structure f7r: with a carbon number of 8 to J:15 and a fIi fatty acid as a lubricant for a magnetic recording medium,
It exhibits a good lubrication effect even at low temperatures, and therefore the running stability of magnetic recording media at low temperatures is the same.
スチル耐久性が格段に改善されることが認められる。It is recognized that the still durability is significantly improved.
出願人 日立マクセル株式会社 代表者 水 井 厚Applicant: Hitachi Maxell, Ltd. Representative Atsushi Mizu
Claims (5)
媒体において、潤滑剤として、炭素数８以上１５以下で
、分岐構造を有するアルコールと脂肪酸とのエステルを
含むことを特徴とする磁気記録媒体。(1) A magnetic recording medium having a magnetizable layer provided on a non-magnetic support, characterized in that the lubricant contains an ester of an alcohol and a fatty acid having a branched structure and having 8 to 15 carbon atoms. magnetic recording medium.
以下の飽和、直鎖構造であることを特徴とする請求項（
１）記載の磁気記録媒体。(2) The fatty acid constituting the ester has 18 or more carbon atoms and 28 or more carbon atoms.
A claim characterized in that it has the following saturated, linear structure (
1) The magnetic recording medium described above.
下の飽和、分岐構造であることを特徴とする請求項（１
）記載の磁気記録媒体。(3) Claim (1) characterized in that the fatty acid constituting the ester has a saturated and branched structure with 6 to 28 carbon atoms.
) Magnetic recording medium described.
下の不飽和、直鎖構造であることを特徴とする請求項（
１）記載の磁気記録媒体。(4) A claim in which the fatty acid constituting the ester has an unsaturated, linear structure with 6 to 28 carbon atoms.
1) The magnetic recording medium described above.
以下で、分岐構造を有するアルコールと脂肪酸とのエス
テルに加え、さらに脂肪酸を含むことを特徴とする磁気
記録媒体。(5) As a lubricant for magnetic recording media, the number of carbon atoms is 8 or more and 15
In the following description, a magnetic recording medium is characterized in that it further contains a fatty acid in addition to an ester of an alcohol and a fatty acid having a branched structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17464188A JPH0224825A (en) | 1988-07-13 | 1988-07-13 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17464188A JPH0224825A (en) | 1988-07-13 | 1988-07-13 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0224825A true JPH0224825A (en) | 1990-01-26 |
Family
ID=15982147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17464188A Pending JPH0224825A (en) | 1988-07-13 | 1988-07-13 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0224825A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02273317A (en) * | 1989-04-14 | 1990-11-07 | Fuji Photo Film Co Ltd | Magnetic recording medium |
-
1988
- 1988-07-13 JP JP17464188A patent/JPH0224825A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02273317A (en) * | 1989-04-14 | 1990-11-07 | Fuji Photo Film Co Ltd | Magnetic recording medium |
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