CH162738A - Process for preserving diazo solutions. - Google Patents
Process for preserving diazo solutions.Info
- Publication number
- CH162738A CH162738A CH162738DA CH162738A CH 162738 A CH162738 A CH 162738A CH 162738D A CH162738D A CH 162738DA CH 162738 A CH162738 A CH 162738A
- Authority
- CH
- Switzerland
- Prior art keywords
- preserving
- solutions
- diazo
- diazo solutions
- french
- Prior art date
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
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0079—Azoic dyestuff preparations
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zum Haltbarmachen von Diazolösungen. Es ist bekannt, dass in Diazolösungen, wie man sie zur Herstellung von Azofarb- stoffen auf der Faser verwendet, je nach der Haltbarkeit der Diazoverbindung nach kür zerem oder längerem Stehen sich Ausschei dungen von Zersetzungsprodukten bilden, wel che die Reibechtheit der Färbung, insbeson dere bei Apparatfärbungen, sehr ungünstig beeinflussen.
Es wurde nun gefunden, dass das Auf treten dieser Ausscheidungen praktisch da durch verhindert werden kann, dass man den Diazolösungen Dispergier- oder Emulgiermittel, die bei saurer Reaktion beständige Lösungen bilden, zusetzt.
Als Dispergier- bezw. Emul- giermittel seien beispielsweise genannt: ge reinigte Sulfitablauge, die Umsetzungspro dukte von garbonsäuren aliphatischer, cyclo- aliphatischer oder aromatisch-alipbatischer Natur mit organischen Aminosulfonsäuren, deren Herstellung den Gegenstand der eng lischen Patente 341053, 843524 und 343899 bildet, ferner Verbindungen, die man dadurch erhält, dass man in organische Verbindungen, die eine oder mehrere Oxy-,
Carboxy- oder Aminogruppen enthalten, Polyglycolätherreste mit 4 oder mehr .Äthylengruppen einführt (vergl. franz. Patent 727202) oder auch ester- artige Kondensationsprodukte, wie sie nach dem Verfahren des franz. Patentes 705801 erhalten werden können.
Die Menge des zuzusetzenden Dispergier- oder Emulgiermittels kann in weiten Grenzen schwanken, jedoch genügen im allgemeinen 1-3 gr auf 1 Liter. Die Lösungen bleiben dadurch während der ganzen Dauer ihres Ge brauches klar und zeigen eine sehr gute Halt barkeit. <I>Beispiel:</I> 2 gr 4-Chlor-l-methyl-2-aminobenzol wer den in der üblichen Weise dianotiert, mit essigsaurem Natrium abgestumpft und nach dem Auffüllen auf 1 Liter mit 1 gr Oleyl- methyltaurin (hergestellt nach Beispiel 4 des englischen Patentes 343899) versetzt.
Mit dieser Lösung kann Baumwolle, welche mit 2-Oxynaphthalin-3-karbonsäure-o-tolüidid im prägniert ist, in der üblichen Weise entwik- kelt werden,- Die in derselben Weise hergestellte Diazo- lösung zeigt ohne den Zusatz von Oleyl- methyltaurin schon nach kurzer Zeit (etwa 1/z-1 Stunde) rosa gefärbte, flockige Aus scheidungen.
An Stelle des Oleylmethyltaurins kann mit demselben Erfolg z. B. auch Oleylhydroxy- äthannatriumsulfonat verwandt werden (siehe z. B. franz. Patent 705081_) oder Produkte, die durch Einwirkung von 20 Mol Äthylenogyd auf 1 Mol Octodecyalalkohol, oder 'l Mol von Oleylalkohol (siehe z. B. franz. Patent 727702) erhalten werden.
Process for preserving diazo solutions. It is known that in diazo solutions such as those used for the production of azo dyes on the fiber, depending on the shelf life of the diazo compound, after a shorter or longer period of standing, decomposition products form, wel che the rubbing fastness of the dye, in particular in the case of apparatus coloring, have a very unfavorable effect.
It has now been found that the occurrence of these precipitations can practically be prevented by adding dispersants or emulsifiers, which form stable solutions in the event of an acid reaction, to the diazo solutions.
As a dispersing or Examples of emulsifiers are: purified sulphite waste liquor, the reaction products of aliphatic, cycloaliphatic or aromatic-aliphatic nature with organic aminosulphonic acids, the production of which is the subject of English patents 341053, 843524 and 343899, and also compounds that are obtained by converting one or more oxy-,
Contain carboxy or amino groups, polyglycol ether radicals with 4 or more. Ethylene groups (cf. French. Patent 727202) or ester-like condensation products, as they are according to the method of French. Patent 705801 can be obtained.
The amount of the dispersing or emulsifying agent to be added can vary within wide limits, but generally 1-3 g per 1 liter are sufficient. As a result, the solutions remain clear for the entire duration of their use and have a very good shelf life. <I> Example: </I> 2 grams of 4-chloro-l-methyl-2-aminobenzene are dianotized in the usual way, blunted with sodium acetate and, after filling up to 1 liter, with 1 gram of oleylmethyltaurine (manufactured according to Example 4 of English patent 343899).
With this solution cotton, which is impregnated with 2-oxynaphthalene-3-carboxylic acid-o-toluidide, can be developed in the usual way. The diazo solution produced in the same way shows without the addition of oleylmethyltaurine after a short time (about 1 / z-1 hour) pink colored, flaky excretions.
Instead of oleylmethyltaurine, z. B. Oleylhydroxy- äthannatriumsulfonat can be used (see z. B. French. Patent 705081_) or products that are produced by the action of 20 moles of Ethylenogyd on 1 mole of octodecyl alcohol, or 1 mole of oleyl alcohol (see, for example, French. Patent 727702 ) can be obtained.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEI42736D DE593790C (en) | 1931-10-05 | 1931-10-05 | Process for preserving diazo solutions |
Publications (1)
Publication Number | Publication Date |
---|---|
CH162738A true CH162738A (en) | 1933-07-15 |
Family
ID=7190852
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH162738D CH162738A (en) | 1931-10-05 | 1932-09-22 | Process for preserving diazo solutions. |
Country Status (5)
Country | Link |
---|---|
AT (1) | AT135053B (en) |
CH (1) | CH162738A (en) |
DE (1) | DE593790C (en) |
FR (1) | FR743545A (en) |
NL (1) | NL35402C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2498722A (en) * | 1945-07-04 | 1950-02-28 | Gen Aniline & Film Corp | Solid diazo complexes |
-
0
- NL NL35402D patent/NL35402C/xx active
- FR FR743545D patent/FR743545A/fr active Active
-
1931
- 1931-10-05 DE DEI42736D patent/DE593790C/en not_active Expired
-
1932
- 1932-09-22 CH CH162738D patent/CH162738A/en unknown
- 1932-09-24 AT AT135053D patent/AT135053B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2498722A (en) * | 1945-07-04 | 1950-02-28 | Gen Aniline & Film Corp | Solid diazo complexes |
Also Published As
Publication number | Publication date |
---|---|
NL35402C (en) | |
AT135053B (en) | 1933-10-25 |
DE593790C (en) | 1934-03-06 |
FR743545A (en) |
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