CH159070A - Process for the preparation of a water-soluble dye. - Google Patents

Process for the preparation of a water-soluble dye.

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Publication number
CH159070A
CH159070A CH159070DA CH159070A CH 159070 A CH159070 A CH 159070A CH 159070D A CH159070D A CH 159070DA CH 159070 A CH159070 A CH 159070A
Authority
CH
Switzerland
Prior art keywords
preparation
water
soluble dye
dye
dichloro
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 CH159070A publication Critical patent/CH159070A/en

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Description

  

  Verfahren zur     Darstellung    eines     wasserlösliehen        Farbstoffes.       Gegenstand des vorliegenden Zusatzpa  tentes ist ein Verfahren zur Darstellung eines  wasserlöslichen Farbstoffes, welches darin  besteht, dass man auf     2.5-Di-(p-amidodiphe-          nylamino)-3.6-dichlor-1.4-benzochinon    ein     Sul-          fierungsmittel    einwirken lässt.  



  <I>Beispiel:</I>  50 Gewichtsteile     2.5-Di-(p-amidodiphenyl-          amino)-3.6-dichlor-1.4-bec)zochinon    werden mit  1000 Gewichtsteilen Monohydrat und 10 Ge  wichtsteilen Braunstein 5 Stunden auf 95 0  erhitzt, auf 2000 Gewichtsteile Eis gegeben,  abgesaugt, mit Kochsalz neutral gewaschen  und getrocknet. Die auf diese Weise erhält  liche     Farbstoffsulfosäure    färbt Baumwolle vor  allem aus     sodaalkalischem    Bade in kräftigen  blauen Tönen an. Sie kann auch zum Färben  von Wolle, Kunstseide und gemischten Ge  weben dienen.



  Process for the preparation of a water-soluble dye. The subject of the present additional patent is a method for the preparation of a water-soluble dye which consists in allowing a sulphonating agent to act on 2.5-di- (p-amidodiphenylamino) -3.6-dichloro-1,4-benzoquinone.



  <I> Example: </I> 50 parts by weight of 2.5-di- (p-amidodiphenyl-amino) -3.6-dichloro-1.4-bec) zoquinone are heated to 95 ° for 5 hours with 1000 parts by weight of monohydrate and 10 parts by weight of manganese dioxide 2000 parts by weight of ice are added, filtered off with suction, washed neutral with sodium chloride and dried. The dyestuff sulfonic acid obtained in this way dyes cotton, especially from soda-alkaline baths, in strong blue tones. It can also be used to dye wool, rayon and mixed fabrics.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines wasser löslichen Farbstoffes, dadurch gekennzeichnet, dass man auf 2.5-Di-(p-amidodipheciylamino)- 3.6-dichlor-1.4-benzochinon ein Sulfierungs- mittel einwirken lässt. Die auf diese Weise erhältliche Farb- stoffsulfosäure färbt Baumwolle vor allem aus sodaalkalischem Bade in kräftigen blauen Tönen an. Sie kann auch zum Färben von Wolle, Kunstseide und gemischten Geweben dienen. UNTERANSPRÜCHE: 1. PATENT CLAIM: Process for the preparation of a water-soluble dye, characterized in that a sulfonating agent is allowed to act on 2.5-di- (p-amidodipheciylamino) 3.6-dichloro-1.4-benzoquinone. The dyestuff sulfonic acid obtainable in this way dyes cotton, especially from a soda-alkaline bath, in strong blue tones. It can also be used to dye wool, rayon and mixed fabrics. SUBCLAIMS: 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als Sulfierungs- mittel ein Gemisch aus Monohydrat und geringen Mengen Braunstein verwendet. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Reaktion bei 95 C durchführt. Process according to patent claim, characterized in that a mixture of monohydrate and small amounts of manganese dioxide is used as the sulphonation agent. 2. The method according to claim, characterized in that the reaction is carried out at 95 C.
CH159070D 1930-10-29 1931-10-28 Process for the preparation of a water-soluble dye. CH159070A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE159070X 1930-10-29
CH156123T 1931-10-28

Publications (1)

Publication Number Publication Date
CH159070A true CH159070A (en) 1932-12-15

Family

ID=25716711

Family Applications (1)

Application Number Title Priority Date Filing Date
CH159070D CH159070A (en) 1930-10-29 1931-10-28 Process for the preparation of a water-soluble dye.

Country Status (1)

Country Link
CH (1) CH159070A (en)

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