AT33319B - Process for the representation of monochloro-monobromoindigo. - Google Patents

Process for the representation of monochloro-monobromoindigo.

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Publication number
AT33319B
AT33319B AT33319DA AT33319B AT 33319 B AT33319 B AT 33319B AT 33319D A AT33319D A AT 33319DA AT 33319 B AT33319 B AT 33319B
Authority
AT
Austria
Prior art keywords
monochloro
monobromoindigo
representation
desc
indigo
Prior art date
Application number
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German (de)
Original Assignee
Chem Ind Basel
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Publication date
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Publication of AT33319B publication Critical patent/AT33319B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung von Monochlor-Monobromindigo. 



   In der Patentschrift Nr. 33318 (zweites Zusatz-Patent zum Patente Nr.   3220ï)   ist die Darstellung von gemischten Tri- und Tetrahalogensubstitutionsprodukten des Indigos beschrieben worden, bestehend in der Einwirkung von   entsprechenden Mengen Brom auf   Mono- und Dichlorderivate des Indigos. Es wurde nun   weiter gefunden, dass man in analoger   Weise auch zu den   gemischten   Dihalogenderivaten, d. h. zu Monochlor-Monobromsubstitutions- 
 EMI1.1 
 in Nitrobenzol mit reinblauer Farbe.

   Beim Behandeln mit alkalischen Reduktionsmitteln, namentlich Natronlauge und   Natriumhydrosultit,   wird eine klare hellagelbe Küpe erhalten, aus welcher ungebeizte Baumwolle in lebhaften rotstichig-blauen Nuancen von vorzüglicher   Waschechtheit,   sowie guter Chlor- und Lichtechtheit angefärbt wird. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the representation of monochloro-monobromoindigo.



   In patent specification No. 33318 (second additional patent to patent No. 3220ï) the preparation of mixed tri- and tetrahalogen substitution products of indigo has been described, consisting in the action of corresponding amounts of bromine on mono- and dichloro derivatives of indigo. It has now been found that in an analogous manner to the mixed dihalogen derivatives, ie. H. to monochloro monobromo substitution
 EMI1.1
 in nitrobenzene with a pure blue color.

   When treating with alkaline reducing agents, namely sodium hydroxide solution and sodium hydrosultite, a clear, light yellow vat is obtained from which unstained cotton is dyed in vivid reddish-blue shades of excellent washfastness, as well as good chlorine and lightfastness.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Darstellung von Monochlor-Monobromindigo, dadurch gekennzeichnet, dass man Monochlorderivate, des Indigos nach dem Verfahren des Patentes nu. illit 2 Atomen Brom behandelt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the preparation of monochloro-monobromoindigo, characterized in that monochloro derivatives, indigo according to the process of the patent nu. illit treated 2 atoms of bromine. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT33319D 1907-03-04 1907-06-06 Process for the representation of monochloro-monobromoindigo. AT33319B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT32207T 1907-03-04
AT33319T 1907-06-06

Publications (1)

Publication Number Publication Date
AT33319B true AT33319B (en) 1908-06-10

Family

ID=25599732

Family Applications (1)

Application Number Title Priority Date Filing Date
AT33319D AT33319B (en) 1907-03-04 1907-06-06 Process for the representation of monochloro-monobromoindigo.

Country Status (1)

Country Link
AT (1) AT33319B (en)

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