JPH02246014A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPH02246014A JPH02246014A JP6538789A JP6538789A JPH02246014A JP H02246014 A JPH02246014 A JP H02246014A JP 6538789 A JP6538789 A JP 6538789A JP 6538789 A JP6538789 A JP 6538789A JP H02246014 A JPH02246014 A JP H02246014A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- magnetic layer
- recording medium
- hydrocarbon group
- magnetic recording
- 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
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 15
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 5
- 125000001183 hydrocarbyl group Chemical group 0.000 claims abstract 5
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims 1
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 150000002170 ethers Chemical class 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 239000000314 lubricant Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 8
- -1 ester compounds Chemical class 0.000 description 8
- 150000002430 hydrocarbons Chemical group 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000006247 magnetic powder Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical class ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 1
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920001747 Cellulose diacetate Polymers 0.000 description 1
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 229910017061 Fe Co Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229920000459 Nitrile rubber Polymers 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Lubricants (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、磁気記録媒体に関し、詳しくは耐久性に優れ
た磁気記録媒体に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording medium, and more particularly to a magnetic recording medium with excellent durability.
〔従来の技術及び発明が解決しようとする課題〕磁気記
録媒体は、記録再生時に磁気ヘッドやパッドなどと激し
く摺動し、磁性層が摩耗されやすいため、磁性層の摩耗
が少なく耐久性に優れたものが望まれている。[Prior art and problems to be solved by the invention] Magnetic recording media slide violently against magnetic heads and pads during recording and reproduction, and the magnetic layer is easily abraded, so the magnetic layer has less wear and is highly durable. something is desired.
このため、磁性層の耐摩耗性を改善する方策として、磁
性層中に種々の潤滑剤を混入する内添法、あるいは磁性
層表面に潤滑層を形成するトップコート法等が行われて
いる。Therefore, as measures to improve the wear resistance of the magnetic layer, methods such as an internal addition method in which various lubricants are mixed into the magnetic layer, or a top coating method in which a lubricant layer is formed on the surface of the magnetic layer have been used.
従来から使用されている潤滑剤としては、高級脂肪酸お
よびそのエステル、脂肪酸アミド、流動パラフィン、シ
リコーンオイル等がある。Conventionally used lubricants include higher fatty acids and their esters, fatty acid amides, liquid paraffin, and silicone oils.
しかしながら、これらの潤滑剤は性能面では満足される
ものとは言い難いのが現状である。However, it is currently difficult to say that these lubricants are satisfactory in terms of performance.
本発明者らは、良好な潤滑性が付与され大幅に耐久性が
改善された磁気記録媒体を得るべく鋭意研究の結果本発
明に到達した。The present inventors have arrived at the present invention as a result of intensive research in order to obtain a magnetic recording medium that is provided with good lubricity and has significantly improved durability.
即ち、本発明は、非磁性支持体上に磁性層を有する磁気
記録媒体において、該磁性層が、下記一般式（１）で表
されるエーテルを保持してい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。That is, the present invention provides a magnetic recording medium having a magnetic layer on a non-magnetic support, characterized in that the magnetic layer holds an ether represented by the following general formula (1). It provides:
ＣＨ＊ＯＲｔ ＯＨ
（ただし、Ｒ１は炭素数２〜３０の炭化水素基、Ｒ８は
水素原子又は炭素数１〜８の炭化水素基を表わす、）
本発明に係る前記一般式（１）で表されるエーテルにお
いて、前述のようにＲ１の炭素数は２〜３０であるが、
中でも１０〜２２、更には１４〜２０が好ましい、また
このＲ１は直鎖であっても、分岐を有していてもよく、
さらに飽和であっても、不飽和結合を有していてもよい
。CH*ORtOH (wherein, R1 represents a hydrocarbon group having 2 to 30 carbon atoms, and R8 represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms) represented by the general formula (1) according to the present invention; In the ether, as mentioned above, the number of carbon atoms in R1 is 2 to 30,
Among them, 10 to 22, more preferably 14 to 20, and this R1 may be linear or branched,
Furthermore, it may be saturated or may have an unsaturated bond.
また、Ｒ１は水素原子であるか、炭素数１〜８の炭化水
素基であり、炭化水素基は直鎖であっても分岐鎖であっ
ても良い、好ましくはＨ（水素原子）又は炭素数１〜４
の炭化水素基である。Further, R1 is a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms, and the hydrocarbon group may be linear or branched, preferably H (hydrogen atom) or a hydrocarbon group having a carbon number of 1 to 8. 1-4
is a hydrocarbon group.
本発明における一般式（１）で示されるエーテルは単独
で用いることもできるが、他の潤滑剤、特に汎用のエス
テル化合物、例えばブチルステアレート等の高級脂肪酸
エステルとの併用が好ましく、特に該エーテル／エステ
ルの重量比がｌ／９９〜６０／４０になるような割合で
併用すると特に良好な潤滑機能が発現される。また必要
に応じて、更に他の汎用潤滑剤、例えば脂肪酸などと併
用してもよい。Although the ether represented by the general formula (1) in the present invention can be used alone, it is preferable to use it in combination with other lubricants, especially general-purpose ester compounds, such as higher fatty acid esters such as butyl stearate. Particularly good lubricating function is exhibited when the weight ratio of ester/ester is in the range of 1/99 to 60/40. Further, if necessary, it may be used in combination with other general-purpose lubricants, such as fatty acids.
本発明における前記一般式（１）で表されるエーテル化
合物の磁気記録媒体への添加量は磁性材料１００重量部
あたり０．０５〜１５重量部が好ましく、磁性塗料中に
あらかじめ混入するか、又は磁性塗膜形成後にトップコ
ート法によって塗膜に含浸して用いることができる。In the present invention, the amount of the ether compound represented by the general formula (1) added to the magnetic recording medium is preferably 0.05 to 15 parts by weight per 100 parts by weight of the magnetic material, and it may be mixed in advance into the magnetic paint, or After forming the magnetic coating film, it can be used by impregnating it into the coating film using a top coating method.
またスパッタあるいは蒸着法により非磁性支持体上に磁
性層を形成する型の磁気記録媒体に対してもトップコー
ト法等の同様な方法で前記一般式（１）で表されるエー
テル化合物を添加して用いることができる。Furthermore, the ether compound represented by the general formula (1) can be added to a type of magnetic recording medium in which a magnetic layer is formed on a non-magnetic support by sputtering or vapor deposition using a similar method such as a top coating method. It can be used as
本発明の磁気記録媒体に使用される磁性粉としては針状
形の微細な７ Ｆ１３＊Ｏｓ、 Ｆｅ５Ｏａ、 Ｃｒ
０１のような金属酸化物、またＣｏ被被着−Ｆｅ＊Ｏｓ
、 Ｃ。The magnetic powder used in the magnetic recording medium of the present invention includes fine needle-shaped 7F13*Os, Fe5Oa, Cr.
Metal oxides such as 01 and Co-coated - Fe*Os
,C.
ドープ７−Ｆｅ、Ｏ，のような加工処理を施したＴＦｅ
ｕｄｓ 、金属鉄粉末、微小板状のバリウムフェライト
及びそのＰｅ原子の一部がＴｉ、 Ｃｏ、 Ｚｎ。TFe processed like doped 7-Fe, O,
uds, metallic iron powder, barium ferrite in the form of microplates and some of its Pe atoms are Ti, Co, Zn.
Ｖ、 Ｎｂ等の１種又は２種以上で置換された磁性粉、
Ｃｏ、 Ｆｅ−Ｃｏ、 Ｆｅ−Ｎｉ等の金属又は合金の
超微粉などが挙げられる。これらのうち金属鉄粉末は特
に化学的に安定性が悪くこの改良のためニッケル、コバ
ルト、チタン、ケイ素、アルミニウムなどを金属原子、
塩及び酸化物の形で少量加えたり表面処理されることが
あるが、これらを用いることもできる。金属鉄粉末は又
その安定化のため弱い酸化性雰囲気の中で表面に薄い酸
化被膜を作らせることがあるが、このように処理された
金属粉を用いることもできる。また前述の磁性粉を２種
以上混合して用いてもよい。Magnetic powder substituted with one or more of V, Nb, etc.
Examples include ultrafine powder of metals or alloys such as Co, Fe-Co, and Fe-Ni. Among these, metallic iron powder is particularly unstable chemically, and in order to improve this, metal atoms such as nickel, cobalt, titanium, silicon, and aluminum are added.
Salts and oxides, which are sometimes added in small amounts or surface treated, can also be used. Metallic iron powder may also have a thin oxide film formed on its surface in a weakly oxidizing atmosphere to stabilize it, and metal powder treated in this way can also be used. Further, two or more kinds of the above-mentioned magnetic powders may be mixed and used.
本発明において用いられる、磁性粉を分散させて磁性層
を形成させるための結合剤の例としては、ポリウレタン
、ポリ塩化ビニル、塩化ビニル酢酸ビニル共重合体、ポ
リアクリルニトリル、ニトリルゴム、エポキシ樹脂、ア
ルキッド樹脂、ポリアミド、ポリアクリル酸エステル、
ポリメタクリル酸エステル、ポリ酢酸ビニル、ポリビニ
ルブチラール、塩化ビニリデン、硝化綿、マレイン酸変
性塩化ビニル・酢酸ビニル共重合体、エチルセルロース
などが挙げられる。Examples of the binder used in the present invention for dispersing magnetic powder to form a magnetic layer include polyurethane, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, polyacrylonitrile, nitrile rubber, epoxy resin, Alkyd resin, polyamide, polyacrylic ester,
Examples include polymethacrylic acid ester, polyvinyl acetate, polyvinyl butyral, vinylidene chloride, nitrified cotton, maleic acid-modified vinyl chloride/vinyl acetate copolymer, and ethyl cellulose.
これらは単独で用いても、２種以上混合して用いてもよ
い、また樹脂の硬さを調節するため可塑剤や硬化剤を加
えて使用することもできる。These may be used alone or in combination of two or more, and a plasticizer or curing agent may be added to adjust the hardness of the resin.
本発明の磁気記録媒体の磁性層には以上の成分の他、こ
の分野で通常、使用される研磨剤、帯電防止剤等の添加
剤を加えることができる。In addition to the above-mentioned components, additives such as abrasives and antistatic agents commonly used in this field can be added to the magnetic layer of the magnetic recording medium of the present invention.
また、本発明の磁気記録媒体を製造する際に用いられる
非磁性支持体としては、ポリエチレンテレフタレートの
ようなポリエステル；ポリエチレン、ポリプロピレン等
のポリオレフィン；セルローストリアセテート、セルロ
ースジアセテート等のセルロース誘導体；ポリカーボネ
ート；ポリ塩化ビニル；ポリイミド；芳香族ポリアミド
等のプラスチック；Ａｌ、Ｃｕ等の金属；紙等が使用さ
れる。形態はフィルム、テープ、シート、ディスク、カ
ード、ドラム等いずれでもよい、また支持体表面はコロ
ナ放電、放射線、紫外線等で処理されていても、あるい
は適当な樹脂でプレコートされていてもよい。In addition, non-magnetic supports used in manufacturing the magnetic recording medium of the present invention include polyesters such as polyethylene terephthalate; polyolefins such as polyethylene and polypropylene; cellulose derivatives such as cellulose triacetate and cellulose diacetate; polycarbonate; Vinyl chloride; polyimide; plastics such as aromatic polyamide; metals such as Al and Cu; paper, etc. are used. The support may be in any form such as a film, tape, sheet, disk, card, or drum, and the surface of the support may be treated with corona discharge, radiation, ultraviolet light, etc., or may be precoated with a suitable resin.
以下本発明を実施例により更に詳細に説明するが、本発
明がこれら実施例に限定されるものではないことは言う
までもない。EXAMPLES The present invention will be explained in more detail below with reference to Examples, but it goes without saying that the present invention is not limited to these Examples.
実施例１〜３
金属鉄粉末 １００重量部塩化ビ
ニル−酢酸ビニル共重合体” １１ ｌポリウレタ
ン樹脂１１１１
カーボンブラック（帯電防止剤） ２ ＃Ｃｒ１Ｏ
ｓ （研磨剤）１０Ｉ
トルエン ７１＃メチルエチル
ケトン ７１ ｌシクロヘキサノン
１０７＃注）
＊１：ユニオンカーバイド社製商品名ＶＡＧＨ傘２：日
本ポリウレタン社製商品名Ｎ−２３０１上記組成物をサ
ンドミルにて１０時間混合した後、フィルタを通して取
出し、更に塗布直前に硬化剤を４４Ｉ量部添加して撹拌
した。この塗料を３２μ厚のポリエチレンテレフタレー
トフィルム上に、乾燥後の磁性層厚みが４μになるよう
にして両面に塗布し乾燥し巻き取った。これをカレンダ
ー処理後硬化をしてから円盤状に打ち抜き、表１に示さ
れる潤滑剤の２．０重量％イソプロパツール溶液を、表
１に示される潤滑剤の塗布量が６００■／イとなるよう
に塗布して試料ディスクを作製した。Examples 1 to 3 Metallic iron powder 100 parts by weight Vinyl chloride-vinyl acetate copolymer 11 l Polyurethane resin 1111 Carbon black (antistatic agent) 2 #Cr1O
s (abrasive) 10I toluene 71# methyl ethyl ketone 71 l cyclohexanone
107# Note) *1: Union Carbide Co., Ltd., product name: VAGH Umbrella 2: Nippon Polyurethane Co., Ltd., product name: N-2301 After mixing the above composition in a sand mill for 10 hours, it was taken out through a filter, and a curing agent was added immediately before coating. 44 parts of I was added and stirred. This paint was applied to both sides of a 32μ thick polyethylene terephthalate film so that the magnetic layer thickness after drying would be 4μ, dried and rolled up. This was calendered and cured, then punched out into a disc shape, and a 2.0% by weight isopropanol solution of the lubricant shown in Table 1 was applied to the disc so that the coating amount of the lubricant shown in Table 1 was 600 cm/I. A sample disk was prepared by applying the following coating.
表 １
比較例１〜４
実施例１〜３で用いた潤滑剤の代わりに、表２に示す各
種潤滑剤を用いた他は、実施例１〜３と全く同様にして
試料ディスクを作製した。Table 1 Comparative Examples 1 to 4 Sample disks were produced in exactly the same manner as in Examples 1 to 3, except that various lubricants shown in Table 2 were used instead of the lubricants used in Examples 1 to 3.
表 ２
をＯとし、以下傷の少ない順にＯ１Δ、×として評価し
た。Table 2 was designated as O, and the following evaluations were made as O1Δ and × in descending order of the number of scratches.
この結果を表３に示す。The results are shown in Table 3.
表 ３
試験例１
実施例１〜３及び比較例１〜４で得られた試料ディスク
について、耐久性を調べるため、各試料ディスクを不織
布を裏打ちしたシェルに収納し、記録再生装置に装填し
、同一トラック上でヘッドを連続走行させた。このとき
の周速は８ｍ／ｓｅｃである。Table 3 Test Example 1 In order to examine the durability of the sample disks obtained in Examples 1 to 3 and Comparative Examples 1 to 4, each sample disk was housed in a shell lined with nonwoven fabric, loaded into a recording and reproducing device, and The head was run continuously on the same track. The circumferential speed at this time is 8 m/sec.
Claims (1)
いて、該磁性層が、下記一般式（１）で表されるエーテ
ルを保持していることを特徴とする磁気記録媒体。 ▲数式、化学式、表等があります▼・・・（１） （ただし、Ｒ＿１は炭素数２〜３０の炭化水素基、Ｒ＿
２は水素原子又は炭素数１〜８の炭化水素基を表わす。 ）[Claims] 1. A magnetic recording medium having a magnetic layer on a non-magnetic support, characterized in that the magnetic layer holds an ether represented by the following general formula (1). recoding media. ▲There are mathematical formulas, chemical formulas, tables, etc.▼...(1) (However, R_1 is a hydrocarbon group with 2 to 30 carbon atoms, R_
2 represents a hydrogen atom or a hydrocarbon group having 1 to 8 carbon atoms. )
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6538789A JPH02246014A (en) | 1989-03-17 | 1989-03-17 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6538789A JPH02246014A (en) | 1989-03-17 | 1989-03-17 | Magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02246014A true JPH02246014A (en) | 1990-10-01 |
Family
ID=13285526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6538789A Pending JPH02246014A (en) | 1989-03-17 | 1989-03-17 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02246014A (en) |
-
1989
- 1989-03-17 JP JP6538789A patent/JPH02246014A/en active Pending
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