DE652819C - Process for the preparation of a yellow substantive cotton dye - Google Patents

Process for the preparation of a yellow substantive cotton dye

Info

Publication number
DE652819C
DE652819C DEI50916D DEI0050916D DE652819C DE 652819 C DE652819 C DE 652819C DE I50916 D DEI50916 D DE I50916D DE I0050916 D DEI0050916 D DE I0050916D DE 652819 C DE652819 C DE 652819C
Authority
DE
Germany
Prior art keywords
preparation
yellow
cotton dye
dye
substantive cotton
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
DEI50916D
Other languages
German (de)
Inventor
Dr Max Schubert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG Farbenindustrie AG
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
Priority to DEI50916D priority Critical patent/DE652819C/en
Application granted granted Critical
Publication of DE652819C publication Critical patent/DE652819C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B27/00—Preparations in which the azo group is formed in any way other than by diazotising and coupling, e.g. oxidation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

Verfahren zur Darstellung eines gelben substantiven Baumwollfarbstoffs Nach der Patentschrift 654o2 erhält man durch Einwirkung alkalischer Oxydationsmittel auf Dehydrothiotoluidinsulfosäure und ihre Homologen gelbe substantive Baumwollfarbstoffe.Process for the preparation of a yellow substantive cotton dye According to the patent specification 654o2, the action of alkaline oxidants is obtained on dehydrothiotoluidine sulfonic acid and its homologues yellow substantive cotton dyes.

Es wurde nun gefunden, daß man einen wesentlich lichtechteren, grünstichiggelben Farbstoff erhält, wenn man die in der Patentschrift :277395 beschriebene' 2-p-Aminophenyl-6-carboxybenzthiazolsulfosäure dem obigen Verfahren unterwirft.It has now been found that a significantly more lightfast, greenish yellow dye is obtained if the '2-p-aminophenyl-6-carboxybenzthiazolesulfonic acid described in patent specification: 277395 is subjected to the above process.

Beispiel In die Lösung von 35 Teilen 2-p-Aminophenyl-6-carboxybenzthiazolsulfosäure in 8 bis 9 Teilen Ätznatron und ßoo bis iooo Teilen Wasser läßt man unter gutem Rühren i 8o Teile einer Natriumhypochloritlösung, die ioo bis i 2o Teile aktives Chlor im Liter enthält, einfließen, rührt vorteilhaft mehrere Stunden bei Raumtemperatur nach und erhitzt dann zur Vollendung der Farbstoffbildung auf 7o bis 8o°. Der Farbstoff wird durch Aussalzen isoliert. Er bildet ein oranges, in Wasser leicht lösliches Pulver und färbt die pflanzliche Faser in einem grünstichigen, sehr lichtechten Gelb. In konz. Schwefelsäure löst er sich mit rotbrauner Farbe.Example Into the solution of 35 parts of 2-p-aminophenyl-6-carboxybenzthiazolesulfonic acid in 8 to 9 parts of caustic soda and 300 to 100 parts of water are left under good Stir i 8o parts of a sodium hypochlorite solution, the 100 to i 2o parts active Contains chlorine per liter, pour in, stir advantageously for several hours at room temperature and then heated to 7o to 8o ° to complete the dye formation. The dye is isolated by salting out. It forms an orange color that is easily soluble in water Powder and colors the vegetable fiber in a greenish, very lightfast Yellow. In conc. Sulfuric acid dissolves with a red-brown color.

Claims (1)

PATENT ANSPRLTCH . Verfahren zur Darstellung eines gelben Substantiven Baumwollfarbstoffes, dadurch gekennzeichnet, daß man 2-p-Aminophenyl - 6 - carboxybenzthiazolsulfosäure mit alkalischen Oxydationsmitteln be--handelt. PATENT RESPONSE. Process for the preparation of a yellow noun cotton dye, characterized in that 2-p-aminophenyl-6-carboxybenzthiazolesulfonic acid is treated with alkaline oxidizing agents.
DEI50916D 1934-11-08 1934-11-08 Process for the preparation of a yellow substantive cotton dye Expired DE652819C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEI50916D DE652819C (en) 1934-11-08 1934-11-08 Process for the preparation of a yellow substantive cotton dye

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI50916D DE652819C (en) 1934-11-08 1934-11-08 Process for the preparation of a yellow substantive cotton dye

Publications (1)

Publication Number Publication Date
DE652819C true DE652819C (en) 1937-11-09

Family

ID=7192939

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI50916D Expired DE652819C (en) 1934-11-08 1934-11-08 Process for the preparation of a yellow substantive cotton dye

Country Status (1)

Country Link
DE (1) DE652819C (en)

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