CH160955A - Process for the preparation of a water-soluble red dye of the anthraquinone series. - Google Patents

Process for the preparation of a water-soluble red dye of the anthraquinone series.

Info

Publication number
CH160955A
CH160955A CH160955DA CH160955A CH 160955 A CH160955 A CH 160955A CH 160955D A CH160955D A CH 160955DA CH 160955 A CH160955 A CH 160955A
Authority
CH
Switzerland
Prior art keywords
water
preparation
dye
anthraquinone series
red dye
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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 Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH160955A publication Critical patent/CH160955A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines wasserlöslichen roten     Farbstoffes     der     Anthraehinonreihe.       Das vorliegende Verfahren betrifft die  Darstellung eines blaustichig roten Farb  stoffes der     Anthrachinonreihe    und ist da  durch gekennzeichnet, dass man     Carbo-          methoxy-2-methyl-4-bromanthrapyridon    mit       p-Chloranilin    kondensiert und die erhaltene  Base durch Behandeln mit einem     Sulfie-          rungsmittel    in die entsprechende     Monosulfo-          säure    überführt.  



  <I>Beispiel:</I>  Man erhitzt 40 Teile     p-Chloranilin,    10  Teile     Carbomethoxy-2-methyl-4-bromanthra-          pyridon,    3,5 Teile     Kaliumacetat    und 0,05  Teile Kupfersulfat auf 150 bis 160  , bis im  Bodensatz einer in Benzol gezogenen Probe  kein     Bromid    mehr nachzuweisen ist. Man  verdünnt mit Alkohol, saugt die Base ab  und trocknet.  



  Durch     Sulfieren    dieser Base mit schwa  chem     Oleum    bei 40 bis<B>50'</B> C wird ein  wasserlöslicher, eine     Sulfogruppe    enthalten-    der, tierische Fasern     blaustichig    rot färben  der Farbstoff erhalten. Er stellt in trocke  nem Zustande ein blaurotes Pulver dar.



  Process for the preparation of a water-soluble red dye of the anthraehinone series. The present process relates to the preparation of a bluish red dye of the anthraquinone series and is characterized in that carbomethoxy-2-methyl-4-bromoanthrapyridone is condensed with p-chloroaniline and the base obtained is converted into the by treatment with a sulfonating agent corresponding monosulfonic acid transferred.



  <I> Example: </I> 40 parts of p-chloroaniline, 10 parts of carbomethoxy-2-methyl-4-bromanthrapyridone, 3.5 parts of potassium acetate and 0.05 part of copper sulphate are heated to 150 to 160 parts until the sediment is in place bromide can no longer be detected in a sample taken in benzene. It is diluted with alcohol, the base is filtered off with suction and dried.



  Sulfating this base with weak oleum at 40 to 50 ° C gives a water-soluble, sulfo-group-containing animal fibers with a bluish red coloration of the dye. When dry, it represents a blue-red powder.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines wasser löslichen, blaustichig roten Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man Carbomethoxy-2-methyl-4-brom- anthrapyridon mit p-Chloranilin kondensiert und die erhaltene Base durch Behandeln mit einem Sulfierungsmittel in die entsprechende Monosulfosäure überführt. Der Farbstoff stellt in trockenem Zu stande ein blaurotes Pulver dar, welches in Wasser und in Schwefelsäure mit blaustichig roter Farbe löslich ist. Die schwefelsaure Lösung wird beim Erwärmen mit Borsäure violett. Der Farbstoff färbt Wolle mit blau stichig roter Farbe an. PATENT CLAIM: Process for the preparation of a water-soluble, bluish red dye of the anthraquinone series, characterized in that carbomethoxy-2-methyl-4-bromo-anthrapyridone is condensed with p-chloroaniline and the base obtained is converted into the corresponding monosulphonic acid by treatment with a sulphonating agent . When dry, the dye is a bluish-red powder which is soluble in water and in sulfuric acid with a bluish red color. The sulfuric acid solution turns violet when heated with boric acid. The dye stains wool with a bluish red color.
CH160955D 1931-06-05 1932-04-21 Process for the preparation of a water-soluble red dye of the anthraquinone series. CH160955A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE50631X 1931-06-05
CH156452T 1931-11-08
DE348082X 1954-10-01
DE130955X 1955-09-13
DE160955X 1955-09-16

Publications (1)

Publication Number Publication Date
CH160955A true CH160955A (en) 1933-03-31

Family

ID=27509521

Family Applications (1)

Application Number Title Priority Date Filing Date
CH160955D CH160955A (en) 1931-06-05 1932-04-21 Process for the preparation of a water-soluble red dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH160955A (en)

Similar Documents

Publication Publication Date Title
CH160955A (en) Process for the preparation of a water-soluble red dye of the anthraquinone series.
CH160953A (en) Process for the preparation of a water-soluble, bluish-red dye of the anthraquinone series.
CH160954A (en) Process for the preparation of a water-soluble, violet-red dye of the anthraquinone series.
CH150803A (en) Process for the preparation of a dye of the anthracene series.
CH160950A (en) Process for the preparation of a water-soluble red dye of the anthraquinone series.
CH184884A (en) Process for the preparation of a thioindigo series dye.
CH210527A (en) Process for the production of an anthraquinone derivative.
CH160956A (en) Process for the preparation of a water-soluble, bluish-red dye of the anthraquinone series.
CH149907A (en) Process for the preparation of a vat dye.
CH172257A (en) Process for the preparation of an azine series dye.
CH160951A (en) Process for the preparation of a water-soluble violet dye of the anthraquinone series.
CH200373A (en) Process for the preparation of cerulein monosulfonic acid.
CH186744A (en) Process for the production of a new anthraquinone dye.
CH155031A (en) Process for the preparation of a vat dye of the dibenzpyrenquinone series.
CH150804A (en) Process for the preparation of a dye of the anthracene series.
CH124681A (en) Process for the preparation of a vat dye of the anthraquinone series.
CH151681A (en) Process for the preparation of a vat dye of the dibenzpyrenquinone series.
CH191745A (en) Process for the preparation of 1: 4-diamino-2: 3-di (p-butylphenylthiol) anthraquinone disulfonic acid.
CH159072A (en) Process for the preparation of a water-soluble dye.
CH224347A (en) Process for the preparation of an azo dye.
CH145339A (en) Process for the preparation of a vat dye containing chlorine and bromine.
CH160952A (en) Process for the preparation of a water-soluble, reddish violet dye of the anthraquinone series.
CH172258A (en) Process for the preparation of an azine series dye.
CH163188A (en) Process for the preparation of a water-soluble dye of the anthraquinone series.
CH241154A (en) Process for the preparation of a new monoazo dye.