DE953519C - Process for the aftertreatment of dyeings and prints produced with substantive dyes - Google Patents

Description

Process for the aftertreatment of dyes produced with nouns Dyeings and prints The present invention is a process for Post-treatment of dyeings and prints made with substantive dyes, which is characterized in that, for aftertreatment, aqueous solution, of complex compounds of polyvalent metals -in particular of copper -mi: tPolyal'kyleniminen and used with hexites. The aftertreated dyeings and prints are excellent Wet fastness properties, especially very good wash fastness; which is lightfast also excellent.

Post-treatment of dyes made with nouns Dyeings and prints can be done with the proposed aqueous solutions of the polyalkyleneimine-hexitol-compleme polyvalent metals in the usual. Way to be done. More details are given in the examples made, which at the same time also contains references to the manufacture of the, for use arriving. Contain metal complexes.

The ones listed in the examples. Parts are parts by weight.

Example r A 3% coloring of the dye according to Example r of Patent 7584: 28 on cotton. 1/2 hour at about 70 ° in the liquor ratio i : 2o aftertreated with an aqueous solution in the liter a to 3 g of the following concentrated aqueous. Solution of a polyethyleneimine-sorbitol-copper complex contains. The wet fastness properties of the dye are then considerably improved.

The concentrated aqueous solution of the polyethyleneimine-sorbitol-copper complex Wound as follows: 5 parts of 50% polyethyleneimine, prepared according to Patent 665,794 and 30 parts of Sogbit were dissolved in 60 parts of water and then with 60 parts of crystallized copper sulfate to form a dark blue, clear solution stirred.

Example a Make a, 5a / ay coloring of the dye, Example i the patent specification 69,54a4 on cotton is in the same way as here in example i is given with a dilute aqueous. Solution of the following Post-treated polyethylene imine hexitol copper complex. The NaB authenticity of the so Post-treated staining are considerably improved.

The polyethyleneimine hexdt copper complex used was in the form of a concentrated aqueous solution obtained in such a way that ß one 6o parts of crystallized Copper sulphate and 40 parts of the hexitol mixture obtained by hydrogenating invert sugar had arisen, brought into solution with 50 parts of water with heating and then with it 50 parts 5ooio-i: stirred according to polyethyleneimine.

Example 3 A 3% coloration of the dye mentioned in Example i on cotton is, as indicated in Example i, with a dilute aqueous solution of the Polyäthylenim.in-sorbitol-copper complex described below. The wet fastness properties of the dye are then considerably improved.

The polyethylene-sorbitol-copper complex used was in the form of a concentrated aqueous solution obtained in the following manner: 42 parts crystallized Copper chloride and 30 parts of sorbitol were made by pouring 78 parts of hot water over them dissolved and the solution was then with 50 parts of 5oo / oigetn polyethyleneimine to one dark blue, clear. Stir the solution.

Claims (1)

PATENT CLAIM: Process for the aftertreatment of: with sub, stantiven Dyes and prints produced, characterized in that one for aftertreatment aqueous solutions of complex compounds of polyvalent metals - in particular of copper - used with polyalkylenimines and with hexites.