DE498116C - Process for the production of sulfur dye pastes - Google Patents

Process for the production of sulfur dye pastes

Info

Publication number
DE498116C
DE498116C DEC36820D DEC0036820D DE498116C DE 498116 C DE498116 C DE 498116C DE C36820 D DEC36820 D DE C36820D DE C0036820 D DEC0036820 D DE C0036820D DE 498116 C DE498116 C DE 498116C
Authority
DE
Germany
Prior art keywords
production
sulfur dye
dye pastes
addition
pastes
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
DEC36820D
Other languages
German (de)
Inventor
Ernst Voetter
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 DEC36820D priority Critical patent/DE498116C/en
Application granted granted Critical
Publication of DE498116C publication Critical patent/DE498116C/en
Expired legal-status Critical Current

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)

Description

Verfahren zur Herstellung von Schwefelfarbstoffpasten Bis jetzt war es möglich, Schwefelfarbstoffe in Teigform nur in bestimmten Stärken herzustellen, da man sonst Gefahr lief, daß sich bei mehr oder weniger starker Verdünnung Wasser und besonders bei erhöhten Zusätzen von Salzen Kristalle ausschieden.Process for making sulfur dye pastes Until now it is possible to produce sulfur dyes in dough form only in certain strengths, otherwise there was a risk that water would form with more or less strong dilution and crystals separated out, especially with increased addition of salts.

Es wurde nungefunden, daß durch Kohlenhydrate, welche durch Alkalien aufgeschlossen werden bzw. quellen, homogene Pasten b Uewonnen werden, welche selbst bei längerem Stehen keine Kristalle oder Wasiser abscheiden. Selbst bei Zusatz von so viel Schwefelnatrium, als zum Färben nötig ist, findet keine ,##,usscheidung statt. Man kann solche Schwefelfarbstoffpasten genau wie Direktfarbstoffe unter Zusatz von Salz und So-da färben. Überraschend ist es, daß selbst bei hohen Salzzusätzen keine Ausflockung des Kolloidsstattfindet. Der Zusaitz von gequollener Stärke hat noch den Vorteil, daß die Färbungen besonders bei schwerer egalisierenden Farbstoffen gleichmäßiger ausfallen und außerdem der Faden geschont wird.It has not been found that by carbohydrates, which by alkalis be digested or swell, homogeneous pastes are obtained, which themselves Do not deposit any crystals or washer when standing for a long time. Even with the addition of no, ##, is excreted as much sodium sulphide as is necessary for dyeing instead of. Such sulfur dye pastes can be used just like direct dyes under Color addition of salt and so-da. It is surprising that even with high salt additions there is no flocculation of the colloid. The addition of swollen starch has still have the advantage that the dyeings are especially difficult to level with dyes turn out more evenly and also the thread is spared.

Durch Zusatz baktericider Mittel, wie zum Beispiel Rohkresol oder Toluolsulfochloramidnatrium, wird Schimmelbildung verhindert. Letzteres Mittel hat gleichzeitig die Wirkung, die Stärke beim Erhitzen der Farbflotte in lösliche Stärke überzuführen. Die Kristallausscheidung kann durch Zusatz von Schwefel, welcher sich mit vorhandenem Schwefelalkall zu Polysulfid vereinigt, noch weiter erschwert werden. Ein Zusatz hygroskopischer Mittel, wie Melasse, Glycerin, Pottasche usw., ist zweckmäßig, um derWasserverdunstung entgegenzuwirken.By adding bactericidal agents such as raw cresol or Toluenesulfochloramide sodium, prevents mold formation. The latter means has at the same time the effect, the strength when heating the dye liquor into soluble starch convict. The crystal precipitation can by adding sulfur, which is combined with the existing sulfur alkali to form polysulphide, are made even more difficult. It is advisable to add hygroscopic agents such as molasses, glycerine, potash, etc. to counteract water evaporation.

Claims (1)

PATENTANS.PRUCII: Verfahren zur Herstellung von Schwefelfarbstoffpasten beliebiger Stärke mit oder ohne Zusatz von Schwefelnatrium, darin bestehend, daß man zu den Preßkuchen so vieleines -durch Alkalien quellbaren Kohlenhydrates, wie Stärke, zusetzt, daß ein gleichmäßiger, kein Wasser oder Kristalle abscheidender Teig entsteht, wenn nötig unter Zusatz von Stärke lösenden, baktericiden und hygroskopischen Mitteln.PATENTANS.PRUCII: Process for the production of sulfur dye pastes Any strength with or without the addition of sodium sulphide, consisting in that to the press cake as much of a carbohydrate swellable by alkalis as Starch, adds to the fact that a uniform, no water or crystals separating out Dough is made, if necessary with the addition of starch-dissolving, bactericidal and hygroscopic Means.
DEC36820D 1925-06-17 1925-06-17 Process for the production of sulfur dye pastes Expired DE498116C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC36820D DE498116C (en) 1925-06-17 1925-06-17 Process for the production of sulfur dye pastes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC36820D DE498116C (en) 1925-06-17 1925-06-17 Process for the production of sulfur dye pastes

Publications (1)

Publication Number Publication Date
DE498116C true DE498116C (en) 1930-05-17

Family

ID=7022478

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC36820D Expired DE498116C (en) 1925-06-17 1925-06-17 Process for the production of sulfur dye pastes

Country Status (1)

Country Link
DE (1) DE498116C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE865591C (en) * 1946-02-01 1953-02-02 Ciba Geigy Process for the production of reducing agents for dyeing purposes and dye preparations containing them

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE865591C (en) * 1946-02-01 1953-02-02 Ciba Geigy Process for the production of reducing agents for dyeing purposes and dye preparations containing them

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