JPH06259758A - Production of magnetic recording medium - Google Patents
Production of magnetic recording mediumInfo
- Publication number
- JPH06259758A JPH06259758A JP4397693A JP4397693A JPH06259758A JP H06259758 A JPH06259758 A JP H06259758A JP 4397693 A JP4397693 A JP 4397693A JP 4397693 A JP4397693 A JP 4397693A JP H06259758 A JPH06259758 A JP H06259758A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- magnetic recording
- back layer
- organic dye
- group
- 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.)
- Granted
Links
Abstract
Description
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は磁気記録媒体に関し，走
行安定性，導電性，遮光性，表面平滑性，に優れたバッ
ク層の製法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording medium, and more particularly to a method for producing a back layer which is excellent in running stability, conductivity, light shielding property and surface smoothness.
【０００２】[0002]
【従来の技術】一般に高級ビデオテープ、デジタルオー
ディオテープ、コンピュータ用テープ等の磁気記録媒体
には、支持体に対し磁性面と反対面にバック層が施され
ている。このバック層は、走行安定性を付与するととも
に、静電気防止効果、テープ終端検出のための光遮蔽効
果が要求されている。このため一般にはバック層にカ−
ボンブラックを分散し、導電性、遮光性を付与すること
が行われている。2. Description of the Related Art In general, magnetic recording media such as high-grade video tapes, digital audio tapes, computer tapes, etc. are provided with a back layer on the surface opposite to the magnetic surface of a support. The back layer is required to provide running stability, an antistatic effect, and a light shielding effect for detecting the end of the tape. For this reason, the back layer is generally covered.
It has been practiced to disperse bon black to give conductivity and light shielding property.
【０００３】近年、記録密度の増加に伴い磁性層の平滑
化が進むにつれ、バック層においても平滑性に対する要
求が高まっている。すなわちバック層の平滑性が十分で
ないと、磁性層にバック層の凹凸が転写し、ドロップア
ウト、ＳＮ比低下の問題が起こるからである。また、最
近の磁気テープの薄膜化に伴い、バック層の導電性、遮
光性に対する要求も高まっている。In recent years, as the recording density has increased and the smoothing of the magnetic layer has progressed, the demand for smoothness in the back layer has also increased. That is, if the smoothness of the back layer is not sufficient, the unevenness of the back layer is transferred to the magnetic layer, causing problems such as dropout and reduction in SN ratio. Further, with the recent thinning of the magnetic tape, the demand for the conductivity and the light shielding property of the back layer is also increasing.
【０００４】バック層においてこれら十分な平滑性、導
電性、遮光性を得るには比較的粒子径の小さなカーボン
ブラックを高濃度に高分散する必要があるが、粒子径が
小さなカーボンブラックは一般に比表面積、吸油量が大
きく難分散性である。そこで，高せん断力を有する分散
機として，例えばロ−ルミル，ニ−ダ−等を使用し，プ
レミキシングを行いカ−ボンブラックの強固な凝集粒子
を破砕する方法が取られているが，バインダ−等の高分
子量成分の吸着を伴わないと充分な平滑性が得られず，
また，薄膜塗布するのに充分な塗料の流動性及び塗料の
経時安定性は得られていない。In order to obtain these sufficient smoothness, conductivity and light-shielding property in the back layer, it is necessary to disperse carbon black having a relatively small particle size in a high concentration, but carbon black having a small particle size is generally compared. It has a large surface area and oil absorption and is difficult to disperse. Therefore, as a dispersing machine having a high shearing force, for example, a roll mill, a kneader or the like is used, and premixing is performed to crush the strong agglomerated particles of carbon black. -Sufficient smoothness cannot be obtained without adsorption of high molecular weight components such as
In addition, the fluidity of the coating and the temporal stability of the coating have not been obtained enough to apply a thin film.
【０００５】[0005]
【発明が解決しようとする課題】これらの問題を解決す
るため、磁気記録媒体のバック層に要求される高度なカ
ーボンブラックを含む充填剤の分散状態を得ることを目
的に検討を加えた結果、以下の磁気記録媒体の製法を発
明するに到った。In order to solve these problems, as a result of an examination for the purpose of obtaining a dispersion state of a filler containing a high degree of carbon black required for a back layer of a magnetic recording medium, The following method of manufacturing a magnetic recording medium has been invented.
【０００６】[0006]
【課題を解決するための手段】本発明は，支持体対し互
いに反対面に磁性層及びバック層を有する磁気記録媒体
の製造方法におけるものである。まず下記一般式
（１），（２）で示される塩基性有機色素化合物をバッ
ク層の構成成分であるカ−ボンブラックを含む充填剤と
混練分散し固形チップ化する。この際，チップには溶剤
分として１５重量％以下の溶剤が残留することが望まし
い。次いでこの混合物を溶剤に溶解後サンドミル分散し
バックコ−ト塗料とすることにより，上記問題点を解決
できることを見出したものである。SUMMARY OF THE INVENTION The present invention is a method for manufacturing a magnetic recording medium having a magnetic layer and a back layer on opposite sides of a support. First, a basic organic dye compound represented by the following general formulas (1) and (2) is kneaded and dispersed with a filler containing carbon black, which is a constituent of the back layer, to form solid chips. At this time, it is desirable that 15% by weight or less of the solvent remains in the chip as a solvent component. Then, the inventors have found that the above problems can be solved by dissolving this mixture in a solvent and dispersing it in a sand mill to form a backcoat paint.
【０００７】一般式（１）General formula (1)
【０００８】[0008]
【化４】 [Chemical 4]
【０００９】〔式中，Ｑ；有機色素残基、 Ｘ；直接結合，−ＣＯＮＨ−Ｙ2 −，−ＳＯ2 ＮＨ−Ｙ
2 −または−ＣＨ2 ＮＨＣＯＣＨ2 ＮＨ−Ｙ2 −， （Ｙ2 ；置換基を有してもよいアルキレン基またはアリ
ーレン基） Ｙ1 ；−ＮＨ−または−Ｏ−、 （Ｙ3 ；−ＮＨ−，または，−Ｏ−），あるいはｎ＝１
の場合 −ＮＨ−Ｘ−Ｑであってもよい、 Ｒ1 ，Ｒ2 ；それぞれ独立に置換もしくは無置換のアル
キル基またはＲ1 とＲ2 とで少なくともヘテロ環を形成
してもよい。[Wherein, Q is an organic dye residue, X is a direct bond, -CONH-Y 2- , -SO 2 NH-Y
2 - or -CH 2 NHCOCH 2 NH-Y 2 -, (Y 2; an optionally substituted alkylene group or an arylene group) Y 1; -NH- or -O-, (Y 3 ; -NH-, or -O-), or n = 1
In the case of, R 1 and R 2 may be —NH—X—Q; each independently a substituted or unsubstituted alkyl group or R 1 and R 2 may form at least a heterocycle.
【００１０】ｍ；１〜６の整数、ｎ；１〜４の整数、を
表す。〕 一般式（２）M represents an integer of 1 to 6, and n represents an integer of 1 to 4. ] General formula (2)
【００１１】[0011]
【化５】 [Chemical 5]
【００１２】〔式中，Ｑ；有機色素残基 Ｘ；直接結合，−ＣＯＮＨ−Ｙ1 −，−ＳＯ2 ＮＨ−Ｙ
1 −，または−ＣＨ2 ＮＨＣＯＣＨ2 ＮＨ−Ｙ1 − （Ｙ1 ；置換基を有してもよいアルキレン基またはアリ
ーレン基） Ｙ；下式で示される置換基 [In the formula, Q: organic dye residue X: direct bond, -CONH-Y 1- , -SO 2 NH-Y
1 -, or -CH 2 NHCOCH 2 NH-Y 1 - (Y 1; an optionally substituted alkylene group or an arylene group) Y; substituent represented by the following formula
【００１３】[0013]
【化６】 [Chemical 6]
【００１４】〔式中， Ｒ1 ，Ｒ2 ；それぞれ独立に置換もしくは無置換のアル
キル基またはＲ1 とＲ 2 とで少なくともヘテロ環を形成
してもよい。 Ｙ2 ；水素原子，ハロゲン原子，─ＮＯ2 ，─ＮＨ2 も
しくは─ＳＯ3 Ｈを示す。[Wherein R1, R2; Each independently substituted or unsubstituted
Kill group or R1And R 2Forms at least a heterocycle with
You may. Y2; Hydrogen atom, halogen atom, --NO2、 ─NH2Also
─ SO3H is shown.
【００１５】ｋ；１〜４の整数、ｍ；１〜６の整数、
ｎ；１〜４の整数を表す。〕上記一般式中の有機色素残
基としてはフタロシアニン系色素，アゾ系色素，アント
ラキノン系色素，キナクリドン系色素，ジオキサジン系
色素、アントラピリミジン系色素、アンサンスロン系色
素、インダンスロン系色素、フラバンスロン系色素、ペ
リレン系色素，ペリノン系色素，チオインジゴ系色素，
イソインドリノン系色素，トリフェニルメタン系色素等
の顔料または染料である。K: an integer of 1 to 4, m; an integer of 1 to 6,
n; represents an integer of 1 to 4. As the organic dye residue in the above general formula, a phthalocyanine dye, an azo dye, an anthraquinone dye, a quinacridone dye, a dioxazine dye, an anthrapyrimidine dye, an anthanthrone dye, an indanthrone dye, a flavanthrone. Dyes, perylene dyes, perinone dyes, thioindigo dyes,
It is a pigment or dye such as an isoindolinone type dye and a triphenylmethane type dye.
【００１６】また，バインダ−とは，従来磁気記録媒体
に使用される公知のものの中から，例えばポリウレタン
エラストマ−，硝化綿，塩化ビニル，塩化ビニル−酢酸
ビニル共重合体，塩化ビニリデン共重合体，エポキシ樹
脂，ポリアミド樹脂，アクリル酸エステル樹脂，メタク
リル酸樹脂，ポリエステル樹脂，ウレタン樹脂または，
これらの樹脂の混合物などがある。Further, the binder is selected from known binders conventionally used for magnetic recording media, such as polyurethane elastomer, nitrification cotton, vinyl chloride, vinyl chloride-vinyl acetate copolymer, vinylidene chloride copolymer, Epoxy resin, polyamide resin, acrylic ester resin, methacrylic acid resin, polyester resin, urethane resin or
Mixtures of these resins and the like.
【００１７】本発明のロ−ルミルとしては，２本ロ−ル
があげられる。有機色素化合物を含むバック層の構成成
分をサンドミル等の分散機で塗料化することだけでは，
カ−ボンの強い凝集粒子を破砕するのに十分なせん断力
が得られず，目的とする品質が得られない。また，ロ−
ルミルを用いて固形チップ化する製法は，高せん断力に
よりカ−ボンを一次粒子まで破砕することが出来るが，
微粒子化したカ−ボンは十分な高分子量成分の吸着を伴
っておらず安定な分散状態とは言えない。本発明は，ロ
−ルミルでの高せん断力下において有機色素化合物を存
在させることにより，カ−ボンの再凝集を防止するのに
十分な高分子量成分の吸着が得られ品質の向上，生産性
の向上が達成出来ことを見出したものである。The roll mill of the present invention includes two rolls. If the constituents of the back layer containing the organic dye compound are made into a coating material with a disperser such as a sand mill,
A sufficient shearing force for crushing the strongly agglomerated particles of carbon cannot be obtained, and the desired quality cannot be obtained. In addition,
In the method of making solid chips using a rumill, carbon can be crushed into primary particles by high shearing force.
The finely divided carbon is not in a stable dispersed state because it is not accompanied by sufficient adsorption of high molecular weight components. The present invention makes it possible to adsorb a high molecular weight component sufficient to prevent reaggregation of carbon by allowing an organic dye compound to exist under a high shearing force in a roll mill, thereby improving quality and productivity. It was found that the improvement of can be achieved.
【００１８】本発明における有機色素化合物は，カ−ボ
ンブラックを含む充填剤及びバインダ−と単にロ−ルミ
ル分散時に混合されるだけでもよいが，ロ−ルミルによ
る分散の前に有機色素化合物とバインダ−を予め加熱混
合し溶解状態にしておくことにより，有機色素化合物の
塩基性置換基とバインダ−の極性基との親和性が向上す
るだけでなく，カ−ボン等の充填剤と均一かつ速やかに
混合される為，品質及び生産性の向上が達成される。The organic dye compound in the present invention may be simply mixed with a filler containing carbon black and a binder at the time of roll mill dispersion, but the organic dye compound and the binder may be mixed before the roll mill dispersion. By premixing and dissolving-in advance in a dissolved state, not only the affinity between the basic substituents of the organic dye compound and the polar group of the binder is improved, but also the filler such as carbon is uniformly and quickly mixed. As a result, the quality and productivity are improved.
【００１９】有機色素化合物とバインダ−の混合比率と
しては，バインダ−１００重量部に対し０．１部〜３０
重量部が好ましい。また，カ−ボンブラックを含む充填
剤の混合比率は，前述の混合物１００重量部に対して，
５０〜１５０重量部が好ましい。また，一般式で示され
る有機色素化合物とステアリン酸，パルミチン酸，オレ
イン酸等の脂肪酸及び脂肪酸の金属塩あるいはその他の
公知の界面活性剤を併用添加することにより，形成され
るバック層の表面平滑性を一層高めることが可能であ
る。The mixing ratio of the organic dye compound and the binder is 0.1 to 30 parts by weight per 100 parts by weight of the binder.
Parts by weight are preferred. The mixing ratio of the filler containing carbon black is 100 parts by weight of the above mixture.
50 to 150 parts by weight is preferable. The surface smoothness of the back layer formed by the combined addition of the organic dye compound represented by the general formula and fatty acids such as stearic acid, palmitic acid and oleic acid and metal salts of fatty acids or other known surfactants It is possible to further improve the sex.
【００２０】[0020]
【実施例】本発明を実施例に基づいて説明する。例中、
「部」「％」は、それぞれ「重量部」「重量％」であ
る。 実施例１ コバルト含有γ−Ｆｅ2 Ｏ3 １００部 塩化ビニル樹脂（ＭＲ−１１０，日本ゼオン（株）） １０部 ウレタン樹脂（ニッポラン２３０１，日本ポリウレタン（株）） １０部 アルミナ ５部 トルエン １２０部 メチルエチルケトン １２０部 シクロヘキサノン ６０部 上記組成物をサンドミルで分散した磁性塗料にイソシア
ネート化合物（コロネートＬ，日本ポリウレタン
（株））を３部、ミリスチン酸１部、ｎ−ブチルステア
レート１部を加え、１０μｍ厚のポリエチレンテレフタ
レート支持体上に塗布、配向、乾燥後、カレンダー処理
による鏡面加工を行い３μｍ厚の磁性塗膜を作成した。EXAMPLES The present invention will be described based on examples. In the example,
"Parts" and "%" are "parts by weight" and "% by weight", respectively. Example 1 Cobalt-containing γ-Fe 2 O 3 100 parts Vinyl chloride resin (MR-110, Nippon Zeon Co., Ltd.) 10 parts Urethane resin (Nipporan 2301, Nippon Polyurethane Co., Ltd.) 10 parts Alumina 5 parts Toluene 120 parts Methyl ethyl ketone 120 parts Cyclohexanone 60 parts To a magnetic coating obtained by dispersing the above composition in a sand mill, 3 parts of an isocyanate compound (Coronate L, Nippon Polyurethane Co., Ltd.), 1 part of myristic acid, and 1 part of n-butyl stearate were added and a thickness of 10 μm was added. After coating, orienting and drying on a polyethylene terephthalate support, mirror surface processing by calendering was performed to form a magnetic coating film with a thickness of 3 μm.
【００２１】次に下記組成物を，攪拌容器中で６０℃で
１時間加熱攪拌し，有機色素化合物の溶解液を得た。 （有機色素化合物の溶解液） 硝化綿（セルラインＦＭ２００Ｓ，ダイセル化学工業（株）） １００部 ウレタン樹脂（ニッポラン２３０１，日本ポリウレタン（株））１００部 有機色素化合物 ５部Next, the following composition was heated and stirred in a stirring vessel at 60 ° C. for 1 hour to obtain a solution of the organic dye compound. (Solution of organic dye compound) Nitrified cotton (Cellline FM200S, Daicel Chemical Industries, Ltd.) 100 parts Urethane resin (Nipporan 2301, Nippon Polyurethane Co., Ltd.) 100 parts Organic dye compound 5 parts
【００２２】[0022]
【化７】 [Chemical 7]
【００２３】得られた溶解液を含む下記組成物を２ロ−
ルミルを用いて，２０回処理し，固形チップとした。 有機色素化合物の溶解液 ２０５部 カ−ボンブラック（平均一次粒子径 １７ｍμ） １００部 次に，得られたチップを樹脂，溶剤中で溶解，サンドミ
ルを用いて分散しバックコ−ト塗料とした。更にコロネ
−トＬを２０部加え，磁性層と反対面に塗布，乾燥して
０．７μｍ厚のバック層を形成した後、１／２インチ幅
に裁断し磁気テープを作成した。The following composition containing the obtained solution was added to
It processed 20 times using a rumill, and it was set as the solid chip. Solution of organic dye compound 205 parts Carbon black (average primary particle size 17 mμ) 100 parts Next, the obtained chips were dissolved in a resin and a solvent and dispersed using a sand mill to obtain a back coat paint. Further, 20 parts of coronet L was added, and the coated layer was coated on the surface opposite to the magnetic layer and dried to form a back layer having a thickness of 0.7 μm, which was then cut into 1/2 inch width to prepare a magnetic tape.
【００２４】 チップ（固形分 ９４％） １７０部 硝化綿（セルラインＦＭ２００Ｓ，ダイセル化学工業（株）） １００部 ウレタン樹脂（ニッポラン２３０１，日本ポリウレタン（株）） ５０部 メチルエチルケトン ４００部 トルエン ４００部 シクロヘキサノン ２００部 実施例２ 有機色素化合物を化８に変更した以外は，実施例１と同
様にして磁気記録媒体を得た。Chip (solid content 94%) 170 parts Nitrified cotton (Cell line FM200S, Daicel Chemical Industries Ltd.) 100 parts Urethane resin (Nipporan 2301, Nippon Polyurethane Co., Ltd.) 50 parts Methyl ethyl ketone 400 parts Toluene 400 parts Cyclohexanone 200 Part Example 2 A magnetic recording medium was obtained in the same manner as in Example 1 except that the organic dye compound was changed to Chemical formula 8.
【００２５】[0025]
【化８】 [Chemical 8]
【００２６】実施例３ 有機色素化合物を化９に変更した以外は，実施例１と同
様にして磁気記録媒体を得た。Example 3 A magnetic recording medium was obtained in the same manner as in Example 1 except that the organic dye compound was changed to Chemical formula 9.
【００２７】[0027]
【化９】 [Chemical 9]
【００２８】実施例４ 有機色素化合物を化１０に変更した以外は，実施例１と
同様にして磁気記録媒体を得た。Example 4 A magnetic recording medium was obtained in the same manner as in Example 1 except that the organic dye compound was changed to Chemical formula 10.
【００２９】[0029]
【化１０】 [Chemical 10]
【００３０】実施例５ 有機色素化合物を化１１に変更した以外は，実施例１と
同様にして磁気記録媒体を得た。Example 5 A magnetic recording medium was obtained in the same manner as in Example 1 except that the organic dye compound was changed to Chemical formula 11.
【００３１】[0031]
【化１１】 [Chemical 11]
【００３２】実施例６ 有機色素化合物を化１２に変更した以外は，実施例１と
同様にして磁気記録媒体を得た。Example 6 A magnetic recording medium was obtained in the same manner as in Example 1 except that the organic dye compound was changed to Chemical formula 12.
【００３３】[0033]
【化１２】 [Chemical 12]
【００３４】実施例７ 有機色素化合物を化１３に変更した以外は，実施例１と
同様にして磁気記録媒体を得た。Example 7 A magnetic recording medium was obtained in the same manner as in Example 1 except that the organic dye compound was changed to Chemical formula 13.
【００３５】[0035]
【化１３】 [Chemical 13]
【００３６】比較例１ 実施例１〜７のバック層組成物の製法において、有機色
素化合物を削除したものについて実施例１〜７と同様の
方法で磁気テープを作成した。 比較例２ 実施例１〜７のバック層組成物の製法において、有機色
素化合物として化７を用い，サンドミル分散し磁気テ−
プを作成した。Comparative Example 1 Magnetic tapes were prepared in the same manner as in Examples 1 to 7 except that the organic dye compound was omitted in the method for producing the back layer compositions of Examples 1 to 7. Comparative Example 2 In the method for producing the back layer compositions of Examples 1 to 7, chemical formula 7 was used as an organic dye compound and dispersed in a sand mill to prepare a magnetic tape
Created.
【００３７】以上の実施例１〜７及び比較例１、２で作
成した磁気テープのバック層の中心線表面粗さＲａ，６
０°鏡面反射率、表面電気抵抗、耐磨耗性を測定した結
果及びバック層組成物の塗料流動性、経時安定性を評価
した結果を表１に示した。中心線表面粗さＲａは触針式
表面粗さ測定機により、JIS-B-0601-1982 に基づきカッ
トオフ値０．０８で測定した。耐磨耗性はテープ走行試
験機により２００パス走行後の傷つき程度を観察した。The center line surface roughness Ra, 6 of the back layer of the magnetic tapes prepared in Examples 1 to 7 and Comparative Examples 1 and 2 above.
Table 1 shows the results of measuring the 0 ° specular reflectance, surface electrical resistance, and abrasion resistance, and the results of evaluating the coating fluidity and temporal stability of the back layer composition. The centerline surface roughness Ra was measured with a stylus type surface roughness measuring device at a cutoff value of 0.08 based on JIS-B-0601-1982. The abrasion resistance was evaluated by observing the degree of damage after running 200 passes with a tape running tester.
【００３８】表１から明らかなように、本発明に係わる
有機色素化合物とカーボンブックをロールミルを用い混
練分散し、固形チップとした後塗料化した塗料は、流動
性、経時安定性に優れ、これらを塗布したバック層は平
滑性、耐磨耗性に優れていることがわかる。As is clear from Table 1, the organic dye compound according to the present invention and the carbon book are kneaded and dispersed using a roll mill to obtain solid chips, and the resulting paint is excellent in fluidity and stability over time. It can be seen that the back layer coated with is excellent in smoothness and abrasion resistance.
【００３９】[0039]
【表１】 [Table 1]
【００４０】[0040]
【発明の効果】本発明はカーボンブラックの分散性を向
上せしめることにより、良好な表面平滑性を持つバック
層を作成し、ひいては磁気記録媒体に要求される特性を
向上せしめるものである。INDUSTRIAL APPLICABILITY The present invention improves the dispersibility of carbon black to form a back layer having good surface smoothness, and further improves the properties required for a magnetic recording medium.
Claims (2)
バック層を有する磁気記録媒体の製造方法において，塩
基性末端基を有する有機色素化合物及びカ−ボンブラッ
クを含む充填剤とバインダ−をロ−ルミルを用い，混練
分散し固形チップ化した後，塗料化し塗布することによ
りバック層を設けることを特徴とする磁気記録媒体の製
造方法。1. A method for producing a magnetic recording medium having a magnetic layer and a back layer on opposite sides of a support, wherein a filler and a binder containing an organic dye compound having a basic end group and carbon black are used. A method for producing a magnetic recording medium, characterized in that a back layer is provided by kneading and dispersing the mixture into a solid chip using a roll mill, and then coating the mixture to form a coating.
が、下記一般式（１）または（２）で示されることを特
徴とする磁気記録媒体の製造方法。 一般式（１） 【化１】 〔式中，Ｑ；有機色素残基、 Ｘ；直接結合，−ＣＯＮＨ−Ｙ2 −，−ＳＯ2 ＮＨ−Ｙ
2 −または−ＣＨ2 ＮＨＣＯＣＨ2 ＮＨ−Ｙ2 −， （Ｙ2 ；置換基を有してもよいアルキレン基またはアリ
ーレン基） Ｙ1 ；−ＮＨ−または−Ｏ−、 （Ｙ3 ；−ＮＨ−，または，−Ｏ−），あるいはｎ＝１
の場合 −ＮＨ−Ｘ−Ｑであってもよい、 Ｒ1 ，Ｒ2 ；それぞれ独立に置換もしくは無置換のアル
キル基またはＲ1 とＲ2 とで少なくともヘテロ環を形成
してもよい。 ｍ；１〜６の整数、ｎ；１〜４の整数、を表す。〕 一般式（２） 【化２】 〔式中，Ｑ；有機色素残基 Ｘ；直接結合，−ＣＯＮＨ−Ｙ1 −，−ＳＯ2 ＮＨ−Ｙ
1 −，または−ＣＨ2 ＮＨＣＯＣＨ2 ＮＨ−Ｙ1 − （Ｙ1 ；置換基を有してもよいアルキレン基またはアリ
ーレン基） Ｙ；下式で示される置換基 【化３】 〔式中， Ｒ1 ，Ｒ2 ；それぞれ独立に置換もしくは無置換のアル
キル基またはＲ1 とＲ 2 とで少なくともヘテロ環を形成
してもよい。 Ｙ2 ；水素原子，ハロゲン原子，─ＮＯ2 ，─ＮＨ2 も
しくは─ＳＯ3 Ｈを示す。 ｋ；１〜４の整数、ｍ；１〜６の整数、ｎ；１〜４の整
数を表す。〕2. An organic dye compound having a basic end group.
Is represented by the following general formula (1) or (2).
A method for manufacturing a magnetic recording medium. General formula (1)[In the formula, Q: organic dye residue, X: direct bond, -CONH-Y2-,-SO2NH-Y
2-Or-CH2NHCOCH2NH-Y2-, (Y2An alkylene group which may have a substituent or an ari
Oren group) Y1-NH- or -O-,(Y3-NH- or -O-), or n = 1
In the case of, it may be —NH—X—Q, R1, R2; Each independently substituted or unsubstituted
Kill group or R1And R2Forms at least a heterocycle with
You may. m; represents an integer of 1 to 6, and n represents an integer of 1 to 4. ] General formula (2)[In the formula, Q: organic dye residue X: direct bond, -CONH-Y1-,-SO2NH-Y
1-, Or -CH2NHCOCH2NH-Y1-(Y1An alkylene group which may have a substituent or an ari
Len group) Y: a substituent represented by the following formula[Chemical 3][Where R1, R2; Each independently substituted or unsubstituted
Kill group or R1And R 2Forms at least a heterocycle with
You may. Y2; Hydrogen atom, halogen atom, --NO2、 ─NH2Also
─ SO3H is shown. k; an integer of 1 to 4, m; an integer of 1 to 6, n; an integer of 1 to 4
Represents a number. ]
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5043976A JP3006334B2 (en) | 1993-03-04 | 1993-03-04 | Manufacturing method of magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5043976A JP3006334B2 (en) | 1993-03-04 | 1993-03-04 | Manufacturing method of magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06259758A true JPH06259758A (en) | 1994-09-16 |
| JP3006334B2 JP3006334B2 (en) | 2000-02-07 |
Family
ID=12678754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5043976A Expired - Lifetime JP3006334B2 (en) | 1993-03-04 | 1993-03-04 | Manufacturing method of magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3006334B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006185526A (en) * | 2004-12-28 | 2006-07-13 | Toyo Ink Mfg Co Ltd | Coating material for back layer of magnetic recording medium, and magnetic recording medium using the same |
-
1993
- 1993-03-04 JP JP5043976A patent/JP3006334B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006185526A (en) * | 2004-12-28 | 2006-07-13 | Toyo Ink Mfg Co Ltd | Coating material for back layer of magnetic recording medium, and magnetic recording medium using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3006334B2 (en) | 2000-02-07 |
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