DE913285C - Process for coloring with acidic dyes and coloring preparations - Google Patents

Process for coloring with acidic dyes and coloring preparations

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Publication number
DE913285C
DE913285C DEF7938A DEF0007938A DE913285C DE 913285 C DE913285 C DE 913285C DE F7938 A DEF7938 A DE F7938A DE F0007938 A DEF0007938 A DE F0007938A DE 913285 C DE913285 C DE 913285C
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Prior art keywords
dye
coloring
acid
preparations
dyeing
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Expired
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DEF7938A
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German (de)
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Dr Sigismund Fuchs
Dr Wilhelm Happe
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Hoechst AG
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Hoechst AG
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Priority to DEF7938A priority Critical patent/DE913285C/en
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/02—Material containing basic nitrogen
    • D06P3/04—Material containing basic nitrogen containing amide groups
    • D06P3/24—Polyamides; Polyurethanes
    • D06P3/241—Polyamides; Polyurethanes using acid dyes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0072—Preparations with anionic dyes or reactive dyes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/46—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing natural macromolecular substances or derivatives thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/62—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds with sulfate, sulfonate, sulfenic or sulfinic groups
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/62—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds with sulfate, sulfonate, sulfenic or sulfinic groups
    • D06P1/621—Compounds without nitrogen
    • D06P1/622—Sulfonic acids or their salts
    • D06P1/625—Aromatic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/62—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds with sulfate, sulfonate, sulfenic or sulfinic groups
    • D06P1/628—Compounds containing nitrogen
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/6425—Compounds containing hydrazine or azo groups
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/649—Compounds containing carbonamide, thiocarbonamide or guanyl groups
    • D06P1/6491—(Thio)urea or (cyclic) derivatives
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/651—Compounds without nitrogen
    • D06P1/65106—Oxygen-containing compounds
    • D06P1/65118—Compounds containing hydroxyl groups
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/653—Nitrogen-free carboxylic acids or their salts
    • D06P1/6533—Aliphatic, araliphatic or cycloaliphatic
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/02—Material containing basic nitrogen
    • D06P3/04—Material containing basic nitrogen containing amide groups
    • D06P3/14—Wool
    • D06P3/16—Wool using acid dyes

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

Verfahren zum Färben mit sauren Farbstoffen und Färbepräparate Zusatz zum Patent 903 326 Gegenstand des Patentes 903 326 ist ein Verfahren zum Färben mit sauren Farbstoffen, bei dem die üblicherweise verwendete Schwefel- oder Ameisensäure durch Amidosulfonsäure oder aromatische Sulfinsäuren ersetzt wird oder diese Säuren bzw. deren Salze in Verbindung mit den bisher üblichen Säuren verwendet werden. Man kann auch so verfahren, daß man dem Bad Färbepräparate, die einen sauren Farbstoff und Amidosulfonsäure oder aromatische Sulfinsäuren bzw. deren Salze enthalten, zusetzt und in der üblichen Weise mit Schwefelsäure oder Ameisensäure färbt.Process for dyeing with acidic dyes and dye preparations additive to patent 903 326 The subject of patent 903 326 is a process for dyeing with acidic dyes, in which the commonly used sulfuric or formic acid is replaced by amidosulfonic acid or aromatic sulfinic acids or these acids or their salts can be used in conjunction with the acids customary up to now. One can also proceed in such a way that dye preparations containing an acidic dye are added to the bath and amidosulfonic acid or aromatic sulfinic acids or salts thereof, added and dyes in the usual way with sulfuric acid or formic acid.

Nach diesem Verfahren erhält man wesentlich lebhaftere Färbungen als nach der bisher üblichen Färbemethode unter Verwendung von schwefelsauren oder ameisensauren Bädern und Zusatz von Glaubersalz.This process gives much more vivid colors than according to the previously customary dyeing method using sulfuric or formic acids Baths and the addition of Glauber's salt.

In weiterer Ausbildung dieses Erfindungsgedankens wurde nun gefunden, daß man ganz allgemein lebhafte Färbungen mit sauren Farbstoffen von guten Echtheitseigenschaften erhalten kann, wenn man den Färbebädern neben den üblichen Säuren und Glaubersalz reduzierend wirkende Substanzen zusetzt, die mit dem Farbstoff nicht reagieren. Als reduzierend wirkende Substanzen kommen solche Verbindungen in Frage, deren Sauerstoffaffinität größer ist als die des Farbstoffs, beispielsweise aromatische Oxyverbindungen oder deren Sulfonsäüren, wie Phenol, Resorcin, Pyrogallol, 2-Oxynaphthalin-3, 6-dsulfonsäure, ferner Anilinsulfonsäuren, Glykolsäure, Oxalsäure bzw. die Salze der angegebenen Säuren sowie die Salze aliphatischer Sulfinsäuren, Hydrazin, Thioharnstoff, Glukose u. a. Wie bei dem Verfahren des Hauptpatentes kann man die reduzierend wirkenden Substanzen bereits als Stehmittel mit den sauren Farbstoffen vermischen und mit den so erhaltenen Färbepräparaten in der bisher üblichen Weise färben. Man kann zu klareren Färbungen. auch- in der Weise gelangen, daß man den Färbevorgang in einer möglichst sauerstofffreien Atmosphäre, z: B. in einer Stickstoff- oder Kohlendioxydatmosphäre, ausführt.In a further development of this inventive concept it has now been found that, in general, vivid dyeings with acidic dyes with good fastness properties can be obtained if you use the dyebaths in addition to the usual acids and Glauber's salt Adding reducing substances that do not react with the dye. Compounds with an oxygen affinity are suitable as reducing substances is greater than that of the dye, for example aromatic oxy compounds or their sulfonic acids, such as phenol, resorcinol, pyrogallol, 2-oxynaphthalene-3, 6-dsulfonic acid, also anilinesulfonic acids, glycolic acid, oxalic acid or the salts of those specified Acids and the salts of aliphatic sulfinic acids, hydrazine, thiourea, glucose i.a. As with the process of the main patent, the reducing effects can be used Mix substances already as standing agents with the acidic dyes and with dye the dye preparations thus obtained in the usual manner. Man can lead to clearer colors. also- get in such a way that one can start the dyeing process in an atmosphere that is as free of oxygen as possible, e.g. in a nitrogen or Carbon dioxide atmosphere.

Das Verfahren kann sowohl zum Färben von tierischen Fasern, wie Wolle, Haar öder Seide, als auch zum Färben von synthetischen Fasern, wie Polyamid-oder Polyurethanfasern, verwendet werden.The process can be used for dyeing animal fibers such as wool, Hair or silk, as well as for dyeing synthetic fibers, such as polyamide or Polyurethane fibers can be used.

Beispiel i io g «'olle werden mit o;4 °/0 des durch Sulfonierung von i, 4-Diamino-2, 3-diphenoxyanthrachinon erhältlichen Farbstoffs von folgender Formel: unter Zugabe von 4 % Schwefelsäure, io % Glaubersalz und 0,5 0/0 2-Oxynaphthalin-3, 6-disulfonsäure, bezogen auf das Wollgewicht, gefärbt, indem man bei 5o bis 6o° mit der Ware eingeht, in einer halben Stunde zum Kochen treibt und die Färbung i Stunde bei etwa ioo° behandelt. Dann wird gespült und getrocknet. Man erhält ein lebhaftes Rotviolett von guten Echtheitseigenschaften.Example i io g "'olle are with 0.4% of the dye obtainable by sulfonation of 1,4-diamino-2,3-diphenoxyanthraquinone of the following formula: with the addition of 4% sulfuric acid, 10% Glauber's salt and 0.5 % 2-oxynaphthalene-3,6-disulfonic acid, based on the wool weight, dyed by entering the goods at 50 ° to 60 ° in half an hour comes to a boil and the dye is treated at about 100 ° for an hour. Then it is rinsed and dried. A vivid red-violet with good fastness properties is obtained.

Beispiel 2 Man bereitet ein Färbepräparat, indem man eine gleichmäßige Pulvermischung herstellt aus 4o Teilen des durch Kondensation von i-Amino- 4-bromanthrachinon-2-sulfonsäure mit i-Amino-4-acetylaminöbenzol erhältlichen Farbstoffes, zo Teilen Glaubersalz und 5o Teilen Hydrazinsulfat. ioo Teile io g Wolle (Kaschmirgewebe) werden mit o,64 0/0 dieser Mischung unter Zugäbe von io 0/ö Glaubersalz und 40/'ö Schwefelsäure zum Färbebad i Stünde bei Kochtemperatur gefärbt. Anschließend wird gespült und getrocknet. Man erhält eine sehr lebhafte heilblaue Färbung von guten Echtheitseigenschaften.Example 2 A coloring preparation is prepared by making a uniform powder mixture 4o parts of the condensation of i-amino 4-bromoanthraquinone-2-sulfonic acid with i-Amino-4-acetylamino benzene available Dye, zo share Glauber's salt and 50 parts of hydrazine sulfate. ioo parts 100 g of wool (cashmere fabric) are dyed with 0.64% of this mixture with the addition of 100% of Glauber's salt and 40% of sulfuric acid to the dyebath for one hour at boiling temperature. It is then rinsed and dried. A very vivid, halo-blue dyeing with good fastness properties is obtained.

Beispiel 3 io g Wolle werden mit 0,5 0/0 des im Beispiel 2 angegebenen Farbstoffes unter Zugabe von io % Glaubersalz, 4. % Schwefelsäure . und 0,5 % Hydrazinsulfat i Stunde bei Kochtemperatur gefärbt. Man erhält eine schöne klare hellblaue Färbung.Example 3 10 g of wool are mixed with 0.5 % of the dye given in Example 2 with the addition of 10% Glauber's salt and 4% sulfuric acid. and 0.5% hydrazine sulfate colored for one hour at boiling temperature. A nice, clear light blue color is obtained.

Verwendet man an Stelle von 0,5 % Hydrazinsulfät 0,5 0/ä i-Aminöbenzol-4-sulfonsäure, so erhält man ebenfalls eine klare blaue Färbung.If you use 0.5 0 / ä i-aminobenzene-4-sulfonic acid instead of 0.5% hydrazine sulfate, this also gives a clear blue color.

Beispiel 4 io g Wolle werden mit 0,5 % eines Farbstoffs von der folgenden Zusammensetzung: 1o % Glaubersalz, q. °% Schwefelsäure und 0,5 % Hydrazinsulfat i Stunde kochend gefärbt, gespült und getrocknet. Man erhält eine violettstichige`Blaufärbung, die viel lebhafter ist als die ohne Zusatz von Hydrazinsulfat hergestellte Färbung.Example 4 10 g of wool are mixed with 0.5% of a dye of the following composition: 1o% Glauber's salt, q. % Sulfuric acid and 0.5% hydrazine sulphate colored at the boil for one hour, rinsed and dried. The result is a purple-tinged blue coloration which is much more vivid than the coloration produced without the addition of hydrazine sulfate.

Ersetzt man Glas Hydrazinsulfat durch 0,5 % Oxalsäure, so erhält man ebenfalls eine lebhafte violettstichige Blaufärbung.Replacing glass of hydrazine sulfate with 0.5% oxalic acid is obtained also a lively purple-tinged blue color.

Beispiel 5 io g Wollstückware werden mit 0,3"/, des im Beispiel4 angegebenen Farbstoffes unter Zusatz von io % Glaubersalz, 4 % Schwefelsäure und o,i 0% oxymethansulfinsaurem Zink i Stünde bei Kochtemperatur gefärbt, gespült und getrocknet. Man erhält ein lebhafteres violettstichiges Blau als bei dem üblichen Färben in schwefelsaurem Bad.Example 5 100 g of piece of wool are given with 0.3 ″ of the one given in Example 4 Dye with the addition of 10% Glauber's salt, 4% sulfuric acid and 0.1% oxymethanesulfinic acid Zinc would be colored, rinsed and dried at boiling temperature. One receives a livelier violet-tinged blue than with the usual dyeing in sulfuric acid Bath.

Beispiel 6 io g Wollstückware werden mit 0,50/0 des durch Kondensation von i-Amino-4-bromanthrachinon-2-sulfonsäure mit Hexahydroanilin erhältlichen Farbstoffes von der Formel unter Zugabe von io % Glaubersalz, 40/, Schwefelsäure und o,5 % Glukose oder o,5 0/0 i-Aminobenzol 4-sulfonsäure i Stunde bei Kochtemperatur gefärbt. Die erhaltene helle blaue Färbung ist viel reiner als die ohne Zusatz einer oxydationsverhütenden Substanz erhältliche Färbung.EXAMPLE 6 100 g of piece of wool are made with 0.50 / 0 of the dye of the formula obtainable by condensation of i-amino-4-bromoanthraquinone-2-sulfonic acid with hexahydroaniline colored with the addition of 10% Glauber's salt, 40% sulfuric acid and 0.5% glucose or 0.5% i-aminobenzene-4-sulfonic acid for one hour at boiling temperature. The light blue color obtained is much purer than the color obtained without the addition of an anti-oxidant substance.

_ I Beispiel? io g eines Gewebes aus Polyamidfaser werden mit 0,5 0/0 des in Beispiel 6 angegebenen Farbstoffs unter Zugabe von 40/a Ameisensäure und 0,5)/, Pyrogallol bei Kochtemperatur gefärbt. Man erhält ein lebhaftes Blau von guten Echtheitseigenschaften._ I example? 10 g of a fabric made of polyamide fibers are 0.5 0/0 of the dye given in Example 6 with the addition of 40 / a formic acid and 0.5) /, pyrogallol colored at boiling temperature. A vivid blue is obtained of good fastness properties.

Claims (3)

PATENTANSPROCHE-i. Ausbildung des Verfahrens zum Färben mit sauren Farbstoffen nach Patent 903 326, dadurch gekennzeichnet, daß man den Färbebädern neben den üblichen Säuren und Glaubersalz reduzierend wirkende Substanzen zusetzt, die mit dem Farb- AtoA nicht reagieren, oder den Färbevorgang in einer möglichst sauerstofffreien Atmosphäre durchführt. PATENT APPROACH-i. Formation of the process for dyeing with acidic dyes according to Patent 903 326, characterized in that reducing substances are added to the dye baths in addition to the usual acids and Glauber's salt, which do not react with the dye AtoA, or the dyeing process is carried out in an atmosphere that is as free of oxygen as possible. 2. Verfahren nach Anspruch Z, dadurch gekennzeichnet, daB man dem Bad Färbepräparate, die einen sauren Farbstoff und reduzierend wirkende Substanzen, die mit dem Farbstoff nicht reagieren, enthalten, zusetzt und in der üblichen Weise färbt. 2. The method according to claim Z, characterized in that dye preparations containing an acidic dye are added to the bath and reducing substances that do not react with the dye, adds and colors in the usual way. 3. Färbepräparate, dadurch gekennzeichnet, daB sie einen sauren Farbstoff und eine reduzierend wirkende Substanz, die mit dem Farbstoff nicht reagiert, enthalten.3. Dye preparations, characterized in that that they have an acidic dye and a reducing substance that interacts with the Dye does not react, included.
DEF7938A 1951-12-21 1951-12-21 Process for coloring with acidic dyes and coloring preparations Expired DE913285C (en)

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DEF7938A DE913285C (en) 1951-12-21 1951-12-21 Process for coloring with acidic dyes and coloring preparations

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1156939B (en) * 1954-04-30 1963-11-07 Gillette Industries Ltd Quinone based hair dyes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1156939B (en) * 1954-04-30 1963-11-07 Gillette Industries Ltd Quinone based hair dyes

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