CH151570A - Process for the preparation of a dye of the thioindigo series. - Google Patents

Process for the preparation of a dye of the thioindigo series.

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Publication number
CH151570A
CH151570A CH151570DA CH151570A CH 151570 A CH151570 A CH 151570A CH 151570D A CH151570D A CH 151570DA CH 151570 A CH151570 A CH 151570A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
thioindigo series
chloro
red
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH151570A publication Critical patent/CH151570A/en

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Description

  

  Verfahren zur Darstellung eines     Farbstoffes    der     Thioindigoreihe.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung von     4-6'-Dichlor-          bisthionaphtenindigo,    welches darin besteht,  dass ein reaktionsfähiges     2-Derivat    des     6-          Chlor-2    . 3 -     diketodihydrothionaplitenchirions     mit     4-Clilor-3-oxythionaphten    kondensiert  wird.  



  Der     Farbstoff    ist ein rotes Pulver und  färbt auf Baumwolle ein Rot von hervorra  gender Lichtechtheit.  



  <I>Beispiel:</I>  31,6 Gewichtsteile     6-Chlor-2.3-diketo-di-          hydrothionaphtenchinon-2-        (p-dimethylamino)        -          anil    werden mit 18,5 Gewichtsteilen     4-Chlor-          3-oxythionaphten    in 600 Gewichtsteilen Eis  essig bis zur Beendigung der     Farbstoffbildung     erhitzt. Der nach dem Erkalten abgesaugte    und neutral gewaschene Farbstoff färbt auf  Baumwolle ein Rot von hervorragender Licht  echtheit.



  Process for the preparation of a dye of the thioindigo series. The subject of this additional patent is a process for the preparation of 4-6'-dichloro-bisthionaphtenindigo, which consists in that a reactive 2-derivative of 6-chloro-2. 3 - diketodihydrothionaplitenchirions is condensed with 4-Clilor-3-oxythionaphten.



  The dye is a red powder and dyes cotton a red with excellent lightfastness.



  <I> Example: </I> 31.6 parts by weight of 6-chloro-2,3-diketo-dihydrothionaphtenquinone-2- (p-dimethylamino) -anil are combined with 18.5 parts by weight of 4-chloro-3-oxythionaphthene in 600 parts by weight Ice vinegar heated until the dye has formed. The dye, which is suctioned off after cooling and washed neutral, dyes cotton a red with excellent light fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von 4-6'-Di- chlorbisthionaphtenindigo, dadurch gekenn zeichnet, dass ein reaktionsfähiges 2-Derivat des 6-Chloi--2. 3-diketo-dihydrothionaphtenchi- noris mit 4-Chlor-3-oxythionaphten konden siert wird. Der Farbstoff ist ein rotes Pulver und färbt auf Baumwolle ein Rot von hervorra gender Lichtechtheit. PATENT CLAIM: Process for the preparation of 4-6'-dichlorobisthionaphthene indigo, characterized in that a reactive 2-derivative of 6-chloro-2. 3-diketo-dihydrothionaphtenchinoris is condensed with 4-chloro-3-oxythionaphtene. The dye is a red powder and dyes cotton a red with excellent lightfastness.
CH151570D 1929-05-18 1930-05-14 Process for the preparation of a dye of the thioindigo series. CH151570A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE151570X 1929-05-18
CH148503T 1930-05-14

Publications (1)

Publication Number Publication Date
CH151570A true CH151570A (en) 1931-12-15

Family

ID=25715229

Family Applications (1)

Application Number Title Priority Date Filing Date
CH151570D CH151570A (en) 1929-05-18 1930-05-14 Process for the preparation of a dye of the thioindigo series.

Country Status (1)

Country Link
CH (1) CH151570A (en)

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