JPH0480951B2 - - Google Patents

Info

Publication number
JPH0480951B2
JPH0480951B2 JP59116195A JP11619584A JPH0480951B2 JP H0480951 B2 JPH0480951 B2 JP H0480951B2 JP 59116195 A JP59116195 A JP 59116195A JP 11619584 A JP11619584 A JP 11619584A JP H0480951 B2 JPH0480951 B2 JP H0480951B2
Authority
JP
Japan
Prior art keywords
dye
disazo
dyeing
fibers
formula
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
Application number
JP59116195A
Other languages
Japanese (ja)
Other versions
JPS60260657A (en
Inventor
Toshio Niwa
Yoshiaki Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP59116195A priority Critical patent/JPS60260657A/en
Priority to US06/735,561 priority patent/US4686286A/en
Priority to DE19853520287 priority patent/DE3520287A1/en
Priority to GB08514192A priority patent/GB2159829B/en
Priority to CH2391/85A priority patent/CH662580A5/en
Publication of JPS60260657A publication Critical patent/JPS60260657A/en
Publication of JPH0480951B2 publication Critical patent/JPH0480951B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Coloring (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

(イ) 産業上の利用分野 本発明は新規なジスアゾ化合物及びセルロース
繊維類用ジスアゾ反応性染料に関するものであ
る。 (ロ) 従来の技術 従来、セルロース繊維を染色する場合には、反
応性染料を使用し、炭酸ナトリウム、炭酸カリウ
ム、水酸化ナトリウム等の酸結合剤および塩化ナ
トリウム、硫酸ナトリウム等の電解質の存在下
に、PH10以上で、温度100℃以下の条件下で行う
方法が採用されている。 (ハ) 発明が解決しようとする問題点 ところが、近年セルロース繊維とその他の繊
維、特にポリエステル繊維との混紡布等の需要が
増大し、この様なセルロース/ポリエステル混合
繊維(以下単にC/P繊維と記す)を染色するた
めには、セルロース繊維に対する染料および染色
条件とポリエステル繊維に対する染料および染色
条件とをそれぞれに適用する必要があつた。それ
はポリエステル繊維を染色するための染料および
染色条件がセルロース繊維に対するそれと、大き
く相違するからであつた。すなわちポリエステル
繊維を染色するためには、分散染料を使用し、温
度約130℃で染色する必要があつたためである。 たとえば、上記C/P繊維を同一の工程で染色
するとすれば、反応性染料と分散染料との組合せ
で二つの異なる染料を使用し染色を行わせること
となり、これにはいくつかの問題があつた。例え
ば反応性染料をセルロース繊維側に充分染着させ
るためには酸結合剤によりPHを10以上とすること
が必要となり、酸結合剤の存在は分散染料の分解
を促進し分散染料のポリエステル繊維への染着が
不充分となる。一方、分散染料をポリエステル繊
維側に染着させるためには高温条件(通常130℃)
を必要とするが、上記高PH下における高温下では
反応性染料の加水分解を促進し、セルロース繊維
への染着が著しく阻害されることとなる。したが
つてこの様なC/P繊維を染色する場合には、セ
ルロースまたはポリエステルの一方の繊維を染色
した後、別浴により他の一方の繊維を染色する二
浴法が一般的に行われることとなるのである。 本発明は、分散染料によりポリエステル繊維を
染色する際の、PHおよび染色条件下でセルロース
繊維を染色することができるセルロース繊維類用
ジスアゾ染料の提供を目的とするものである。 発明の構成 (イ) 問題点を解決するための手段 すなわち、本発明は 一般式〔〕 (式中、Mは水素原子またはアルカリ金属を表わ
し、Dzはベンゼンまたはナフタリン系のジアゾ
成分残基を表わし、R1は水素原子または低級ア
ルキル基を表わし、R2およびR3は水素原子、メ
チル基、メトキシ基またはスルホン酸基を表わ
し、mは0または1を表わす。) で示されるジスアゾ化合物及びセルロース繊維類
用ジスアゾ反応性染料を要旨とするものである。 本発明の一般式〔〕で表わされるジスアゾ化
合物において、Mで表わされるアルカリ金属とし
ては、ナトリウム、カリウム等が挙げられ、R1
で表わされる低級アルキル基としては、炭素数1
〜4のアルキル基が挙げられ、Dzで表わされる
ジアゾ成分残基としては、スルホン酸基、メチル
基、メトキシ基等で置換されたフエニル基または
ナフチル基が挙げられる。 前示一般式〔〕で表わされるジスアゾ化合物
は次のようにして製造することができる。 たとえば一般式〔〕 (式中、M、Dz、R1、mは前記定義に同じ) で示される色素1モル割合と下記式〔〕 (式中、M、Dz、R1、mは前記定義に同じ) で示される化合物1モル割合を縮合させ下記式
〔〕 (式中、M、Dz、R1、mは前記定義に同じ) で示されるジスアゾ体とする。 次いで該一般式〔〕で示されるジスアゾ体に
下記一般式〔〕 (式中、M、R2、R3は前記定義に同じ) で示される化合物1モル割合を縮合させることに
より前示一般式〔〕のジスアゾ化合物を製造す
ることができる。 (ロ) 作用・効果 本発明のジスアゾ反応性染料で染色し得る繊維
としては木綿、ビスコースレーヨン、キユプラア
ンモニウムレーヨン、麻などのセルロース系繊維
を挙げることができる。またセルロース系繊維を
含有するポリエステル、トリアセテート、ポリア
クリロニトリル、ポリアミド、羊毛、絹などの混
合繊維中の該セルロース系繊維はもちろん良好に
染色することができる。 本発明のジスアゾ反応性染料を使用する繊維の
染色方法においては、セルロース系以外の繊維を
染色するに必要な染料、例えばColour Index(第
3版)に記載されている分散染料などを同時に染
浴に加えて染色することができる。 本発明のジスアゾ反応性染料を使用してセルロ
ース系繊維を染色する場合には、たとえば上記一
般式〔〕で示されるジスアゾ反応性染料および
染色中に染浴をPH5〜10に保持するに必要な緩衝
剤(たとえば炭酸、リン酸、酢酸、クエン酸等の
酸とそれらの酸のナトリウム塩またはカリウム塩
の単一または混合物で通常0.5〜50g/程度)
そして必要に応じて電解質(塩化ナトリウムまた
は硫酸ナトリウム等を通常1〜150g/程度)
を加えた染浴を調整し、この染浴にセルロース系
繊維を投入し、温度100〜150℃で30〜50分間加熱
することによつて良好な染色を行うことができ
る。 また、セルロース系繊維に他の繊維たとえばポ
リエステル繊維を加えて製造されている混紡布、
混織編物等を染色するためには、本発明の上記一
般式〔〕で示されるジスアゾ反応性染料と、上
記Colour Index所載の分散染料とを上記染浴に
添加することにより、セルロース系繊維とポリエ
ステル繊維と一浴一段法により同時に染色するこ
とができる。 また、上記のような混紡布、混織編物等を染色
する場合に、従来採用されているようにどちらか
一方の繊維を染色した後に同浴で他方の繊維を染
色する一浴二段法を適用してもよく、さらには、
本発明のジスアゾ反応性染料による染色法とセル
ロース系繊維以外の繊維に対する染色法とを組合
せて、別々の浴からセルロース系繊維とその他の
繊維とを染色する二浴法を採用することも可能で
ある。 (ハ) 実施例 以下、本発明の方法を実施例によつて具体的に
説明するが、本発明は、以下の実施例に限定され
るものではない。 実施例 1 遊離酸の形で下記構造式 で示されるジスアゾ反応性染料0.2g、芒硝16g、
緩衝剤としてNa2HPO412H2O 0.4gおよび
KH2PO4 0.1gを水200mlに加えてPH=7に調製
した染浴に未シルケツト綿メリヤス10gを入れ30
分を要して120℃迄昇温し、同温度で60分間染色
した後水洗、ソーピング、水洗、乾燥を行い橙色
の染色物を得た。本染料の染着度は非常に良好で
得られた染色物は極めて濃厚であり耐光堅牢度、
耐塩素堅牢度および耐汗−日光堅牢度はいずれも
良好であつた。 なお、本実施例で使用したジスアゾ反応性染料
は、下式 で表わされるモノアゾ色素1モル割合と下記式 で表わされるモノアゾ色素1モル割合を水媒中、
30〜40℃で縮合させ下式 で表わされるジスアゾ体を製造し、該反応液中に
3−(β−ヒドロキシエチル)スルホニルアニリ
ン硫酸エステル1モル割合を加え90℃で縮合させ
た後塩化カリウムで塩析して上記ジスアゾ反応性
染料を製造した。 実施例 2 遊離酸の形で下記構造式 で示されるジスアゾ反応性染料0.2g、芒硝16g、
緩衝剤としてNa2HPO412H2O 0.5gおよび
KH2PO4 0.02gを水200mlに加えて調製した染浴
に未シルケツト綿メリヤス10gを入れ、30分を要
して130℃迄昇温し、同温度で30分間染色した後、
水洗、ソーピング、水洗、乾燥を行い緋色の染色
物を得た。本染色浴は染色前、後を通じてPH8で
あつた。得られた染色物は極めて濃厚で耐光堅牢
度、耐塩素堅牢度、汗−日光堅牢度はいずれも良
好であつた。 なお、本実施例で使用したジスアゾ反応性染料
は、下式 で表わされるモノアゾ色素1モル割合と下式 で表わされるモノアゾ色素1モル割合を水媒中、
30〜40℃で縮合させ下式 で表わされるジスアゾ体を製造し、該反応液中に
3−(β−ヒドロキシエチル)スルホニルアニリ
ン硫酸エステル1モル割合を加え90℃で縮合させ
た後スプレー乾燥して上記ジスアゾ反応性染料を
製造した。 実施例 3 遊離酸の形で下記構造式 で示されるジスアゾ反応性染料0.2g で示されるアントラキノ染料0.2g、芒硝12g、
緩衝剤としてNa2HPO412H2O 0.4gおよび
KH2PO4 0.1gを水200mlに加えて調製した染浴
にポリエステル/木綿=50:50の混紡布10gを入
れ30分を要して130℃迄昇温し、同温度で60分間
染色した後、水洗、ソーピング、水洗、乾燥を行
い同色性良好な赤色の染色物を得た。本染色浴は
染色の前、後においてPH8であつた。また染着性
は非常に良好で得られた染色物は極めて濃厚であ
り耐光堅牢度、耐塩素堅牢度および耐汗−日光堅
牢度はいずれも良好であつた。 なお、実施例で使用したジスアゾ反応性染料
は、実施例1で用いた下式 で表わされるモノアゾ色素を下式 で表わされるモノアゾ色素に代え、下式 で表わされるモノアゾ色素を下式 で表わされるモノアゾ色素に代え、他は実施例1
と同様に製造したものである。 実施例 4 実施例1に準じた方法で下記一般式 で表わされるジスアゾ反応性染料により綿布を染
色し、結果第1表に示した。
(a) Industrial Application Field The present invention relates to a novel disazo compound and a disazo-reactive dye for cellulose fibers. (b) Conventional technology Conventionally, when dyeing cellulose fibers, reactive dyes are used in the presence of acid binders such as sodium carbonate, potassium carbonate, and sodium hydroxide, and electrolytes such as sodium chloride and sodium sulfate. For this purpose, a method is adopted in which the pH is 10 or higher and the temperature is 100℃ or lower. (c) Problems to be solved by the invention However, in recent years, demand for blended fabrics of cellulose fibers and other fibers, especially polyester fibers, etc. has increased, and such cellulose/polyester blended fibers (hereinafter simply referred to as C/P fibers) ), it was necessary to apply dyes and dyeing conditions to cellulose fibers and dyes and dyeing conditions to polyester fibers, respectively. This is because the dyes and dyeing conditions for dyeing polyester fibers are significantly different from those for cellulose fibers. That is, in order to dye polyester fibers, it was necessary to use disperse dyes and dye at a temperature of about 130°C. For example, if the above-mentioned C/P fibers were to be dyed in the same process, two different dyes would be used in combination, a reactive dye and a disperse dye, which would pose several problems. Ta. For example, in order to fully dye the reactive dyes on the cellulose fiber side, it is necessary to use an acid binder to raise the pH to 10 or more. dyeing becomes insufficient. On the other hand, in order to dye disperse dyes on the polyester fiber side, high temperature conditions (usually 130℃) are required.
However, at high temperatures under the above-mentioned high pH conditions, hydrolysis of the reactive dye is promoted, and dyeing of cellulose fibers is significantly inhibited. Therefore, when dyeing such C/P fibers, a two-bath method is generally used in which one fiber, cellulose or polyester, is dyed and then the other fiber is dyed in a separate bath. It becomes. An object of the present invention is to provide a disazo dye for cellulose fibers that can dye cellulose fibers under the pH and dyeing conditions when dyeing polyester fibers with a disperse dye. Structure of the invention (a) Means for solving the problem That is, the present invention has the general formula [] (In the formula, M represents a hydrogen atom or an alkali metal, Dz represents a benzene or naphthalene-based diazo component residue, R 1 represents a hydrogen atom or a lower alkyl group, R 2 and R 3 represent a hydrogen atom, a methyl group, methoxy group, or sulfonic acid group, and m represents 0 or 1) and disazo-reactive dyes for cellulose fibers. In the disazo compound represented by the general formula [] of the present invention, examples of the alkali metal represented by M include sodium, potassium, etc., and R 1
The lower alkyl group represented by has a carbon number of 1
Examples of the diazo component residue represented by Dz include phenyl or naphthyl groups substituted with a sulfonic acid group, methyl group, methoxy group, etc. The disazo compound represented by the general formula [] can be produced as follows. For example, general formula [] (In the formula, M, Dz, R 1 and m are the same as the above definitions.) 1 mole ratio of the dye and the following formula [] (In the formula, M, Dz, R 1 and m are the same as the above definitions.) The following formula [] is obtained by condensing 1 molar proportion of the compound represented by (In the formula, M, Dz, R 1 and m are the same as defined above.) Next, the following general formula [] is added to the disazo compound represented by the general formula []. (In the formula, M, R 2 and R 3 are the same as defined above.) A disazo compound of the above general formula [] can be produced by condensing 1 molar proportion of the compound represented by the following. (B) Actions and Effects Examples of fibers that can be dyed with the disazo-reactive dye of the present invention include cellulose fibers such as cotton, viscose rayon, cuprammonium rayon, and hemp. Furthermore, cellulose fibers in mixed fibers such as polyester, triacetate, polyacrylonitrile, polyamide, wool, silk, etc. containing cellulose fibers can of course be dyed well. In the fiber dyeing method using the disazo-reactive dye of the present invention, dyes necessary for dyeing non-cellulose fibers, such as disperse dyes listed in the Color Index (3rd edition), are simultaneously added to the dye bath. In addition, it can be dyed. When dyeing cellulose fibers using the disazo-reactive dye of the present invention, for example, the disazo-reactive dye represented by the above general formula Buffer (for example, acids such as carbonic acid, phosphoric acid, acetic acid, citric acid, and sodium salts or potassium salts of these acids, singly or in mixtures, usually about 0.5 to 50 g/)
And electrolytes (usually 1 to 150g/about sodium chloride or sodium sulfate, etc.) as needed.
Excellent dyeing can be achieved by preparing a dye bath with the addition of , adding cellulose fibers to this dye bath, and heating at a temperature of 100 to 150°C for 30 to 50 minutes. In addition, blended fabrics manufactured by adding other fibers such as polyester fibers to cellulose fibers,
In order to dye mixed woven and knitted fabrics, etc., a disazo-reactive dye represented by the above general formula [] of the present invention and a disperse dye listed in the above Color Index are added to the above dye bath to dye cellulose fibers. and polyester fibers can be dyed simultaneously by a one-bath one-step method. In addition, when dyeing blended fabrics, blended knitted fabrics, etc., as described above, the conventional one-bath two-step method of dyeing one fiber and then dyeing the other fiber in the same bath is used. May be applied, and furthermore,
It is also possible to combine the dyeing method using the disazo-reactive dye of the present invention and the dyeing method for fibers other than cellulose fibers to adopt a two-bath method in which cellulose fibers and other fibers are dyed from separate baths. be. (C) Examples Hereinafter, the method of the present invention will be specifically explained using examples, but the present invention is not limited to the following examples. Example 1 The following structural formula in free acid form 0.2g of disazo-reactive dye shown by, 16g of mirabilite,
0.4 g of Na 2 HPO 4 12H 2 O as buffering agent and
Add 0.1 g of KH 2 PO 4 to 200 ml of water and adjust the pH to 7. Add 10 g of unmercerized cotton knitted fabric to the dye bath.
The temperature was raised to 120°C over several minutes, and dyed at the same temperature for 60 minutes, followed by washing with water, soaping, washing with water, and drying to obtain an orange dyed product. The degree of dyeing of this dye is very good, and the dyed product obtained is extremely rich and has good light fastness.
Both chlorine fastness and sweat-sunlight fastness were good. The disazo-reactive dye used in this example was expressed by the following formula: Monoazo dye 1 molar ratio represented by and the following formula In an aqueous medium, 1 molar proportion of a monoazo dye represented by
Condensate at 30~40℃ and form the following formula: A disazo compound represented by is prepared, 1 molar proportion of 3-(β-hydroxyethyl)sulfonylaniline sulfate is added to the reaction solution, condensation is carried out at 90°C, and the disazo compound is salted out with potassium chloride to obtain the above disazo-reactive dye. was manufactured. Example 2 The following structural formula in free acid form: 0.2g of disazo-reactive dye shown by, 16g of mirabilite,
0.5 g of Na 2 HPO 4 12H 2 O as buffering agent and
Add 0.02 g of KH 2 PO 4 to 200 ml of water, add 10 g of unsilcerized cotton knitted fabric to the dye bath, raise the temperature to 130°C over 30 minutes, dye at the same temperature for 30 minutes,
A scarlet dyed product was obtained by washing with water, soaping, washing with water, and drying. This dyeing bath had a pH of 8 before and after dyeing. The dyed product obtained was extremely dense and had good light fastness, chlorine fastness, and sweat-sunlight fastness. The disazo-reactive dye used in this example was expressed by the following formula: 1 mole ratio of monoazo dye expressed by and the following formula In an aqueous medium, 1 molar proportion of a monoazo dye represented by
Condensate at 30~40℃ and form the following formula: A disazo compound represented by was prepared, 1 mole of 3-(β-hydroxyethyl)sulfonylaniline sulfate was added to the reaction solution, condensed at 90°C, and then spray-dried to produce the above disazo-reactive dye. . Example 3 The following structural formula in free acid form: 0.2g of disazo-reactive dye represented by 0.2g of anthraquino dye, 12g of mirabilite,
0.4 g of Na 2 HPO 4 12H 2 O as buffering agent and
10 g of a 50:50 polyester/cotton blend fabric was added to a dye bath prepared by adding 0.1 g of KH 2 PO 4 to 200 ml of water, heated to 130°C over 30 minutes, and dyed at the same temperature for 60 minutes. Thereafter, washing with water, soaping, washing with water, and drying were performed to obtain a red dyed product with good same color property. This dyeing bath had a pH of 8 before and after dyeing. Furthermore, the dyeing property was very good, and the dyed product obtained was extremely rich, and the light fastness, chlorine fastness, and sweat-sunlight fastness were all good. In addition, the disazo-reactive dye used in the example was expressed by the following formula used in Example 1. The monoazo dye represented by the following formula Instead of the monoazo dye represented by the following formula The monoazo dye represented by the following formula In place of the monoazo dye represented by
It was manufactured in the same way. Example 4 The following general formula was prepared in the same manner as in Example 1. Cotton cloth was dyed with the disazo-reactive dye represented by the formula, and the results are shown in Table 1.

【表】【table】

【表】【table】

【表】【table】

【表】【table】

【表】【table】

【表】【table】

【表】【table】

Claims (1)

【特許請求の範囲】 1 一般式〔〕 (式中、Mは水素原子またはアルカリ金属を表わ
し、Dzはベンゼンまたはナフタリン系のジアゾ
成分残基を表わし、R1は水素原子または低級ア
ルキル基を表わし、R2およびR3は水素原子、メ
チル基、メトキシ基またはスルホン酸基を表わ
し、mは0または1を表わす。) で示されるジスアゾ化合物。 2 一般式〔〕 (式中、Mは水素原子またはアルカリ金属を表わ
し、Dzはベンゼンまたはナフタリン系のジアゾ
成分残基を表わし、R1は水素原子または低級ア
ルキル基を表わし、R2およびR3は水素原子、メ
チル基、メトキシ基またはスルホン酸基を表わ
し、mは0または1を表わす。) で示されるセルロース繊維類用ジスアゾ反応性染
料。
[Claims] 1. General formula [] (In the formula, M represents a hydrogen atom or an alkali metal, Dz represents a benzene or naphthalene-based diazo component residue, R 1 represents a hydrogen atom or a lower alkyl group, R 2 and R 3 represent a hydrogen atom, a methyl group, methoxy group or sulfonic acid group, m represents 0 or 1). 2 General formula [] (In the formula, M represents a hydrogen atom or an alkali metal, Dz represents a benzene or naphthalene-based diazo component residue, R 1 represents a hydrogen atom or a lower alkyl group, R 2 and R 3 represent a hydrogen atom, a methyl group, methoxy group or sulfonic acid group, and m represents 0 or 1.) A disazo-reactive dye for cellulose fibers.
JP59116195A 1984-06-06 1984-06-06 Reactive disazo dye for cellulose fiber Granted JPS60260657A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP59116195A JPS60260657A (en) 1984-06-06 1984-06-06 Reactive disazo dye for cellulose fiber
US06/735,561 US4686286A (en) 1984-06-06 1985-05-17 Disazo reactive dyestuffs for cellulose fibers
DE19853520287 DE3520287A1 (en) 1984-06-06 1985-06-05 DISAZO REACTIVE DYES FOR CELLULOSE FIBERS
GB08514192A GB2159829B (en) 1984-06-06 1985-06-05 Disazo reactive dyes containing b-sulfatoethylsulfonylanilinotriazinyl groups
CH2391/85A CH662580A5 (en) 1984-06-06 1985-06-06 DISAZO REACTIVE DYES.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59116195A JPS60260657A (en) 1984-06-06 1984-06-06 Reactive disazo dye for cellulose fiber

Publications (2)

Publication Number Publication Date
JPS60260657A JPS60260657A (en) 1985-12-23
JPH0480951B2 true JPH0480951B2 (en) 1992-12-21

Family

ID=14681185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59116195A Granted JPS60260657A (en) 1984-06-06 1984-06-06 Reactive disazo dye for cellulose fiber

Country Status (1)

Country Link
JP (1) JPS60260657A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5886159A (en) * 1996-08-23 1999-03-23 Sumitomo Chemical Company, Limited Bisazo compound and method for dyeing or printing fibrous materials using the same

Also Published As

Publication number Publication date
JPS60260657A (en) 1985-12-23

Similar Documents

Publication Publication Date Title
JPH0753834B2 (en) Disazo compound
JPH0635554B2 (en) Disazo dye
JPH0480952B2 (en)
JPH0480951B2 (en)
JPH0619047B2 (en) Disazo dye and dyeing method using the same
JPH0619046B2 (en) Disazo compound and dye composition containing the same
JPH0662873B2 (en) Triazine compounds
JPH0480950B2 (en)
JPH0662872B2 (en) Disazo compound and dye composition containing the compound
JPH0655905B2 (en) Disazo compound and dye composition containing the same
JPH0480949B2 (en)
JPH0524943B2 (en)
JPH0527663B2 (en)
JPH058750B2 (en)
JPH0578590B2 (en)
JPH0635556B2 (en) Formazan compounds
JPH051828B2 (en)
JPS61272270A (en) Disazo compound
JPS6284159A (en) Disazo compound
JPS61213268A (en) Tetraazo compound
JPH0482029B2 (en)
JPH0713199B2 (en) Water-soluble tetraazo dye and dyeing method using the same
JPH0482030B2 (en)
JPH0588740B2 (en)
JPH0619045B2 (en) Disazo compound and dye composition containing the same