DE657117C - Process for improving the properties of dyeings with substantive dyes containing sulfonic acid or carboxylic acid groups on cellulose fibers - Google Patents

Description

Process for improving the properties of coloring with nouns, Dyes containing sulfonic acid or carboxylic acid groups on cellulose fibers It is known that sulfonic acid or carboxylic acid groups are found on cellulose fibers containing dyes with bases, their salts or quaternary amino compounds can interact in such a way that coloring changes, animation and improvement of the wet fastness properties can be achieved. This is z. B. by post-treatment the dyed goods with the bases or by pretreating the undyed goods with the basic compounds and dyeing with direct or acidic dyes achieved.

It has now been found that the wet fastness properties and in part also the lightfastness by post-treating dyeings with acidic, water-soluble ones substantive dyes on cellulose fibers with solutions of bases, the metal Contain complex bound and still be able to form salts with acids, in stronger Can improve dimensions than by the known methods. In some cases it will be over These authenticity improvements also involve a significant deepening or modification of the Hue that can be of value.

Particularly suitable bases with complexed metal are, for example: The metal complex compounds of biguanide, 8-aminoquinoline, 8-aninochinaldine, Ethylenediamine, TfiiohaLrnstoff, o-phenanthroline and 2,2'-dipyridyl, - where the basic complex groups can also be part of colored compounds.

The process - is performed in such a manner that the colored fibers are treated with an optionally slightly acid or alkaline, aqueous solution of the metal complex compounds of the bases. But you can also proceed in such a way that the .L \ Tetallkomplexverbindungen of the bases arise in the treatment of the dyeings in the treatment bath. Example i Cotton yarn is marked with 61, f. Direct deep black EW extra (cf. Schultz, Dye Tables,;. Edition, No. 671) dyed, rinsed and post-treated with an aqueous solution of the sulfate of i, i'-dimethylbiguanide copper at 30 ° C for 1 hour, rinsed and again dried.

The waterfastness and washfastness of the dyeings treated in this way is in comparison on the wet fastness properties of the untreated dye much improved.

Subject to a 2 percent staining from Congo red (cf. Schultz, op. cit., no. 369); e the same aftertreatment, so will the fern tone a little more bluish, and the water Washfastness is increased at the same time. D ' Post-treatment can also be done warm. The sulfate of i, i'-dimethylbiguanide copper can be prepared from copper sulfate, an aqueous solution of dimethylamine and dicvandiamide at elevated temperature under pressure. The substance dissolves in water with the addition of sodium chloride or another neutral salt, possibly with the use of a little sodium carbonate.

Example 2 Cotton is dyed in the usual way with 2% of the dye known from patent specification 204 212 "Example 5 and aftertreated with a solution of the sulfate of i-monoethylbiguanide copper for 1/2 hour at 30 ° C. The coloration is good The aftertreatment agent 'jtknd his solution will be according to the were produced in example i. Similar results are obtained from Application of biguanide copper salts, of i-monomethyl biguanide copper, of i, i'-diethyl biguanide copper or compounds of similar composition.

Example 3 If cotton dyeings of direct deep black EW extra are post-treated in the usual way with the solution of the complex salt of 1 mol. Copper chloride and 3 mol. Thiourea, the water fastness is increased. Example 4 The aqueous solution of the copper complex of the compound of the following composition is used for the 1l after-treatment of a 2 percent coloration of pure diamine blue: 2F (cf. S chu 1 tz, loc. cit., 2 # Tr. 5 i (5)) on cotton. By 1/2-hour after-treatment, which can also be done in acetic acid or bicarbonate-alkaline solution , the hue of the untreated dyeing is shifted significantly towards green.The aftertreated dyeing is characterized by good water, wash and lightfastness.

A similarly improved water and wash fastness is achieved with Post-treatment of dyeings with Congo red or direct deep black EW extra on cotton.

The abovementioned compound is obtained if one mole of cyanuric chloride one after the other with i 1M1 each. i-Aniinobenzol-3-triinetliylainmoniumclilorid and 5-Ainino-S-oxyquinoline implements.

Example 5 Cotton is dyed with 21 /, the azo dye that is used by coupling 1 mole of diazobenzene and 1 mole of dianotated 2-aminonaphthlialine-6-sulfonic acid obtained with the urea of 2-amino-S-oxynaplithalin-7-sulfonic acid. The scarlet one Coloring will come off after rinsing with an aqueous solution of the complex compound - Copper sulfate and 8-aniino-2-methylquinoline (can be added by stirring in a alcoholic solution of 8-ainino-2-methylquinoline in an aqueous copper stilfate solution) Treated '/., Hour at 30 ° C. It becomes dark brown and is good light and washable.

If dyeings of diamond green B (cf. S chu 1 tz, a: op. Cit., No. 668) on cotton are treated in the manner described in paragraph i, they are also significantly changed in color and are more washable. EXAMPLE 6 A 2 percent staining of pure diamine blue 21 # on cotton is treated for -1 /, hour in a bath which contains the copper complex, which can be prepared from copper sulfate and 8-amino cindline, in solution. The color becomes a little cloudy and more washable. EXAMPLE 7 Cotton is dyed with 7% of the disazo dye obtained by coupling dianotated 5-amino-2-oxybenzene-i-carboxylic acid with i-aminonaplitlialin, further diazotization and coupling with 2-amino-S-oxynaphthalene-6 sulfonic acid, and treats this coloration at 30 ° C with the aqueous solution of 4, 5-diazaphenanthrene copper chloride (from 4, j-diazaphenaiithren-o-phenanthroline and copper chloride). The dyeing becomes greener and its fastness to washing is improved.

Instead of o-plienanthroline, this can be done by nitrating this base obtained nitrophenanthroline or the amine obtainable therefrom by reduction or the reaction product of 2,3-diaminonaphthalene with 2 mol. glycerol (according to S k r a u p) can be used for aftertreatment in the form of the copper complex compound. Example 8 Diamond green B cotton dyeings are water and wash fastness improved if they are treated with solutions of the 1oniplexsaize of copper chloride with i or 2M01. 2, 2'-Dipyridyl aftertreated.

Complex iron salts of this type improve the waterfastness of dyeings Likewise. Example 9 Cotton, which is extra dyed with direct deep black EW, is with a solution of the copper complex salt of N, N'-Tetrainethyli, 2-diamiiiobenzol post-treated. Such solutions are z. B. obtainable by combining i 11o1. Base and 1 mole of copper acetate in alcohol and diluting this if necessary filtered alcoholic solution with water. The aftertreatment of the after-treated Coloring are improved.

Similarly acts z. B. a solution of the copper complex compound of i-monomethylamino-2-aminobenzene.

Claims (2)

CLAIMS: i. Process for improving the properties of Dyeings with substantive dyes containing sulfonic acid and carboxylic acid groups on cellulose fiber, characterized in that the dyed goods are mixed with solutions the complex metal compounds of organic bases that form salts with acids treated. 2. Modification of the method according to claim i, characterized in that because treatment baths are used, which contain the bases and those for the formation of metal complexes Contain metal compounds capable of the bases.