CH205810A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH205810A
CH205810A CH205810DA CH205810A CH 205810 A CH205810 A CH 205810A CH 205810D A CH205810D A CH 205810DA CH 205810 A CH205810 A CH 205810A
Authority
CH
Switzerland
Prior art keywords
sep
azo dye
preparation
dye
violet
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH205810A publication Critical patent/CH205810A/en

Links

Classifications

    • 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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Investigating Or Analysing Biological Materials (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.            Es        wurde    gefunden,     idass    man einen neuen       Azofasbstoff    erhält, wenn man die     Diazo-          verbindung    des     1-Amino-2-methylsulfon-4-          nitrobenzol.s    mit     ss-N-(Äthylaminobenzol)-          propionsäure    vereinigt.

   Der     erhaltene    Farb  stoff     bildet        ein        ,dunkles    Pulver und löst sich,  wenn er     in,    Form eines     Alkalisalzes    vorliegt,  in     Wasser    mit     violetter    Farbe. Er färbt       Acetatkunstseide    aus wässeriger Lösung in  echten violetten Tönen.  



       Beispiel:          2,1,6    Teile     1-Amino-2-methylsulfon-4-ni-          trobenzol        werden    auf übliche Weise     diazo-          tiert.        Diese        Diazoläsung    lässt man langsam  zu<B>19,3</B>     Teilen.        ss-N-(Äthylaminobenzol)

  -          propionsäure    in     Wasser        gelöst        zutropfen    und  stumpft mit     der    berechneten Menge     Natrium-          ace#tat    ab.

   Der ausgeschiedene     Farbstoff        wird            abgenutscht    und     nochmals    in Wasser     ange-          schwemmt    und     mit    Ammoniak schwach       alkalisch        ,gestellt.    Der Farbstoff wird mit  wenig     @Salz        ausgesalzen,        abgenutscht        und    bei  50-60       gstrocknet.  



  Process for the preparation of an azo dye. It has been found that a new azo fiber is obtained if the diazo compound of 1-amino-2-methylsulfone-4-nitrobenzene is combined with β-N- (ethylaminobenzene) propionic acid.

   The dye obtained forms a dark powder and, if it is in the form of an alkali salt, dissolves in water with a purple color. He dyes acetate rayon from an aqueous solution in real purple tones.



       Example: 2.1.6 parts of 1-amino-2-methylsulfone-4-nitrobenzene are diazotized in the usual way. This diazo solution is slowly allowed to <B> 19.3 </B> parts. ss-N- (ethylaminobenzene)

  - Add propionic acid dissolved in water dropwise and blunt with the calculated amount of sodium ace # tat.

   The precipitated dye is suction filtered and washed again in water and made slightly alkaline with ammonia. The dye is salted out with a little salt, suction filtered and dried at 50-60 g.

Claims (1)

EMI0001.0053 PATENTANSPRUCH: <tb> Verfahren <SEP> zur <SEP> Herstellung <SEP> eines <SEP> Azo farbstoffes, <SEP> dadurch <SEP> gekennzeichnet, <SEP> dass <SEP> man <tb> die <SEP> Diazoverbindung <SEP> des <SEP> 1-Amino-2-methyl sulfon-4 <SEP> nitrabenzols <SEP> mit <SEP> ss-N-(Äthylamino ben.zol)-propionsäur9 <SEP> vereinigt. <tb> Der <SEP> erhaltene <SEP> Farbstoff <SEP> bildet <SEP> 'ein <SEP> dunkles <tb> Pulver <SEP> und <SEP> löst <SEP> sich, <SEP> wenn <SEP> er <SEP> in <SEP> Form <SEP> eines <tb> Alkalisalzes <SEP> vorliegt, <SEP> in <SEP> Wasser <SEP> mit <SEP> violetter <tb> Farbe. <SEP> Er <SEP> färbt <SEP> @cetatkunstseide <SEP> aus <SEP> wässeri ger <SEP> Lösung <SEP> in <SEP> echten <SEP> violetten <SEP> Tönen. EMI0001.0053 PATENT CLAIM: <tb> Process <SEP> for <SEP> production <SEP> of a <SEP> azo dye, <SEP> characterized by <SEP>, <SEP> that <SEP> man <tb> the <SEP> diazo compound <SEP> of the <SEP> 1-amino-2-methyl sulfone-4 <SEP> nitrabenzene <SEP> with <SEP> ss-N- (ethylamino benzene) -propionic acid9 <SEP > united. <tb> The <SEP> obtained <SEP> dye <SEP> forms <SEP> 'a <SEP> dark <tb> Powder <SEP> and <SEP> dissolve <SEP>, <SEP> if <SEP> he <SEP> in <SEP> form <SEP> one <tb> alkali salt <SEP> is present, <SEP> in <SEP> water <SEP> with <SEP> violet <tb> color. <SEP> He <SEP> colors <SEP> @cetatkunstseide <SEP> from <SEP> aqueous <SEP> solution <SEP> in <SEP> real <SEP> violet <SEP> tones.
CH205810D 1937-07-10 1937-07-10 Process for the preparation of an azo dye. CH205810A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH205810T 1937-07-10
CH202248T 1937-07-10

Publications (1)

Publication Number Publication Date
CH205810A true CH205810A (en) 1939-06-30

Family

ID=25723783

Family Applications (1)

Application Number Title Priority Date Filing Date
CH205810D CH205810A (en) 1937-07-10 1937-07-10 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH205810A (en)

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