CH212579A - Process for the preparation of a chromable dye of the triarylmethane series. - Google Patents

Process for the preparation of a chromable dye of the triarylmethane series.

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Publication number
CH212579A
CH212579A CH212579DA CH212579A CH 212579 A CH212579 A CH 212579A CH 212579D A CH212579D A CH 212579DA CH 212579 A CH212579 A CH 212579A
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CH
Switzerland
Prior art keywords
dye
chromable
amino
preparation
triarylmethane series
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 CH212579A publication Critical patent/CH212579A/en

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Description

  

  Verfahren zur Herstellung eines     ehromierbaren    Farbstoffes der     Triarylmethanreihe.       Gegenstand dieses Zusatzpatentes     isst    ein  Verfahren zur Herstellung     eines        chromier-          baren    Farbstoffes der     Triarylmethanreihe,     welches dadurch gekennzeichnet ist, dass man  1-     (4'-Dimethylamino-        2'-        oxybenzoyl)        -o-oxy-          carboxy-2-benzoesäure,

      die durch Verschmel  zen von 5 -     Oxytrimellitsäureanhydrid    mit       Dimethylamino-m-phenol    während mehrerer       Stunden    bei etwa 135 bis 140' C erhältlich  ist, mit dem aus     diazotiertem        1-Amino-2-          naphthol        und        Resorcin    erhältlichen     Azofarb-          stoff    kondensiert.

      <I>Beispiel:</I>    3,82 Gewichtsteile des salzsauren Salzes der  1- (4'-     Dimethylamino    - 2'     -oxybenzoyl)    -     o-oxy-          carboxy-2-benzoesäure,    die durch Verschmel  zen von     5-Oxytrimelliteäureanhydrid    mit     Di-          methylamino    - m - Phenol während mehrerer  Stunden bei etwa 135 bis 140   C erhältlich  ist, werden mit 2,

  8 Gewichtsteilen des     Azo-          farbstoffes    aus     diazotiertem    1-Amino-2-naph-         thol    und     Resorcin    in 80 Gewichtsteilen     p-          Toluolsulfosäure    bei 95   C kondensiert. Dar  nach wird in 400 Teile Wasser gegossen,  kurz zum Sieden erhitzt, nach dem Er  kalten filtriert, neutral gewaschen     und    ge  trocknet. Der so erhaltene Farbstoff färbt  in Form seines     Natriumsalzes    Wolle aus sau  rem Bade beim     Nachchromieren    in grau  blauen Tönen, die gute     Echtheiten    besitzen.



  Process for the production of an honorable dye of the triarylmethane series. The subject of this additional patent is a process for the production of a chromable dye of the triarylmethane series, which is characterized in that 1- (4'-dimethylamino-2'-oxybenzoyl) -o-oxy-carboxy-2-benzoic acid,

      which is obtainable by fusing 5-oxytrimellitic anhydride with dimethylamino-m-phenol for several hours at about 135 to 140 ° C., condenses with the azo dye obtainable from diazotized 1-amino-2-naphthol and resorcinol.

      <I> Example: </I> 3.82 parts by weight of the hydrochloric acid salt of 1- (4'-dimethylamino - 2 '-oxybenzoyl) - o-oxycarboxy-2-benzoic acid, which is produced by fusing 5-oxytrimellite anhydride with Dimethylamino - m - phenol is available for several hours at about 135 to 140 C, are 2,

  8 parts by weight of the azo dye from diazotized 1-amino-2-naphthol and resorcinol condensed in 80 parts by weight of p-toluenesulfonic acid at 95.degree. It is then poured into 400 parts of water, heated briefly to the boil, filtered after cold, washed neutral and dried ge. The dye obtained in this way, in the form of its sodium salt, dyes wool from acidic baths when it is chromed in gray-blue shades which have good fastness properties.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines chromier- baren Farbstoffes der Triarylmethanreihe, dadurch gekennzeichnet, dass man 1-(4'-Di- methylamino-2'- oxybenzoyl)-o-oxycarboxy-2- benzoesäure, die durch Verschmelzen von 5 Oxytrimellitsäureanhydrid mit Dimethyl- amino-m-phenol während mehrerer Stunden bei etwa 135 bis 140' C erhältlich ist, PATENT CLAIM: A process for the production of a chromable dye of the triarylmethane series, characterized in that 1- (4'-dimethylamino-2'-oxybenzoyl) -o-oxycarboxy-2-benzoic acid, which is obtained by fusing oxytrimellitic anhydride with dimethyl - amino-m-phenol is available for several hours at about 135 to 140 ° C, mit dem aus diazotiertem 1-Amino-2-naphthol und Resorcin erhältlichen Azofarbfstoff kon densiert. Der so erhaltene Farbstoff färbt in Form seines Natriumsalzes Wolle aus saurem Bade beim Nachchromieren in graublauen Tönen, die gute Echtheiten besitzen. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Kondensation durch Erhitzen der Reaktionskomponentei auf 95 C in Gegenwart von p-Toluolsulfon säure bewirkt. condensed with the azo dye obtainable from diazotized 1-amino-2-naphthol and resorcinol. The dye obtained in this way, in the form of its sodium salt, dyes wool from an acid bath when it is re-chromed in gray-blue shades, which have good fastness properties. SUBSTANTIAL CLAIM: Process according to claim, characterized in that the condensation is effected by heating the reaction component to 95 C in the presence of p-toluenesulfonic acid.
CH212579D 1936-08-11 1937-07-19 Process for the preparation of a chromable dye of the triarylmethane series. CH212579A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE212579X 1936-08-11
CH210831T 1937-07-19

Publications (1)

Publication Number Publication Date
CH212579A true CH212579A (en) 1940-11-30

Family

ID=25724941

Family Applications (1)

Application Number Title Priority Date Filing Date
CH212579D CH212579A (en) 1936-08-11 1937-07-19 Process for the preparation of a chromable dye of the triarylmethane series.

Country Status (1)

Country Link
CH (1) CH212579A (en)

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