CH251290A - Process for the preparation of a new bright acid dye of the anthraquinone series. - Google Patents

Process for the preparation of a new bright acid dye of the anthraquinone series.

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Publication number
CH251290A
CH251290A CH251290DA CH251290A CH 251290 A CH251290 A CH 251290A CH 251290D A CH251290D A CH 251290DA CH 251290 A CH251290 A CH 251290A
Authority
CH
Switzerland
Prior art keywords
preparation
acid dye
anthraquinone series
new bright
amino
Prior art date
Application number
Other languages
French (fr)
Inventor
S A Sandoz
Original Assignee
Sandoz Sa
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 Sandoz Sa filed Critical Sandoz Sa
Publication of CH251290A publication Critical patent/CH251290A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Procédé de préparation d'un nouveau colorant acide     brillant    de     la    série       anthraquinonique.       Le présent brevet a pour objet un procédé  de préparation d'un nouveau colorant acide  de la série     anthraquinonique,    selon lequel an  condense l'acide     1-amino-4-bromanthraqui-          none-2,7-dis.ulfonique    avec     l'1-amino-3,4,5-          triméthyl-cyclohexane.     



  Le colorant     ainsi        obtenu    a pour formule  
EMI0001.0011     
    et     teint    la laine et les fibres animales, les       fibres    artificielles à base de     superpolyamides     en ton bleu verdâtre vif.  



  Les teintures qu'il fournit sont égales,       résistantes    à la lumière et au lavage, et  stables à la lumière     artificielle.     



       Exemple:          Les    parties indiquées sont en poids.  



  On mélange 25 parties     d'1-amino-4-brom-          anthraquinone-2,7-disulfonate    de potassium  technique, 40 parties     d'1-amino-3,4,5-trimé-          thyl-cyclohexane,    6 parties de soude causti  que     33%,    0,4 parties de poudre de     cuivre,     40 parties d'alcool et 200 parties d'eau. On  agite et chauffe à 55-65  en faisant passer  un lent courant d'azote et en maintenant la    même     température    jusqu'à ce que la masse en  réaction soit devenue bleue. On sépare le       colorant    formé selon les méthodes connues.

    Il se présente     sous    forme de poudre cristalline  bleue, se dissolvant facilement dans l'eau en  bleu verdâtre; sa solution dans     SO.,Hz    est  incolore,     mais    vire au bleu rougeâtre     intense     par     adjonction    de     p-formaldéhyde.     



  Les     quantités    d'amine, d'alcali, de cata  lyseur, de diluant peuvent varier dans de  larges     limites.        L'introduction    du dérivé       anthraquinonique    peut se faire aussi par pe  tites     portions    au cours de quelques heures.



  Process for the preparation of a new bright acid dye of the anthraquinone series. The present patent relates to a process for the preparation of a novel acid dye of the anthraquinonic series, according to which an condenses 1-amino-4-bromanthraquinone-2,7-dis.ulfonic acid with 1- amino-3,4,5-trimethyl-cyclohexane.



  The dye thus obtained has the formula
EMI0001.0011
    and dyed wool and animal fibers, artificial fibers based on superpolyamides in a bright greenish blue tone.



  The dyes it provides are even, lightfast and washfast, and stable to artificial light.



       Example: Parts shown are by weight.



  25 parts of technical potassium 1-amino-4-brom-anthraquinone-2,7-disulphonate, 40 parts of 1-amino-3,4,5-trimethyl-cyclohexane, 6 parts of caustic soda are mixed. as 33%, 0.4 parts of copper powder, 40 parts of alcohol and 200 parts of water. Stir and heat to 55-65 with a slow stream of nitrogen passing through and maintaining the same temperature until the reaction mass has turned blue. The dye formed is separated off according to known methods.

    It comes in the form of a blue crystalline powder, easily dissolving in water in greenish blue; its solution in SO., Hz is colorless, but turns to intense reddish blue on addition of p-formaldehyde.



  The amounts of amine, alkali, catalyst catalyst, diluent can vary within wide limits. The introduction of the anthraquinone derivative can also be done in small portions over the course of a few hours.

 

Claims (1)

REVENDICATION Procédé de préparation d'un nouveau Co lorant acide de la série anthraquinonique, se lon lequel on condense l'acide 1-amino-4- bromanthraquinone-2,7-disulfonique avec l'1 amino-3, 4, 5-triméthyl-cycl ohexane. Le nouveau colorant a pour formule EMI0001.0045 et teint en bleu verdâtre vif les fibres ani males et les fibres artificielles à base de su perpolya.mides. CLAIM Process for the preparation of a new acidic co lorant of the anthraquinonic series, according to which 1-amino-4-bromanthraquinone-2,7-disulfonic acid is condensed with 1 amino-3, 4, 5-trimethyl -cycl ohexane. The new colorant has the formula EMI0001.0045 and dyed animal fibers and artificial fibers made from su perpolya.mides bright greenish blue.
CH251290D 1944-10-19 1944-10-19 Process for the preparation of a new bright acid dye of the anthraquinone series. CH251290A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH246258T 1944-10-19
CH251290T 1944-10-19

Publications (1)

Publication Number Publication Date
CH251290A true CH251290A (en) 1947-10-15

Family

ID=25729098

Family Applications (1)

Application Number Title Priority Date Filing Date
CH251290D CH251290A (en) 1944-10-19 1944-10-19 Process for the preparation of a new bright acid dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH251290A (en)

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