DE629732C - Process for improving the waterfastness of colors - Google Patents

Description

Process for improving the waterfastness of dyeings It is known that by aftertreating dyeings of certain dyes with metal salt solutions can achieve an improvement in the fastness properties, which mostly on the formation of insoluble colored lakes.

It has now been found that the waterfastness of dyeings which with dyes containing sulfonic acid or CarboXylg groups, even with those which do not contain groups that form complexes with heavy metals, can improve if you treat the dyes on the fiber with a higher molecular weight aliphatic amine or a higher molecular weight organic ammonium compound the aliphatic series converted into water-insoluble dye salts, the Use of the water-soluble salts or diamines mono- or diacylated on one side the corresponding quaternary ammonium compounds as well as that according to patent 6z i 373. obtained connections is excluded.

Amines or ammonium compounds with at least 8 carbon atoms are suitable for carrying out the process. Compounds with at least & C atoms which contain several amino or imino groups in the molecule have proven to be particularly suitable, e.g. B. Compounds of the general formula: where R1, R3, R, and R, an aliphatic radical or hydrogen and R., an organic radical, with the exception of the water-soluble salts mono- or diacylated diamines or the corresponding quaternary ammonium compounds. The peralkylation products of the above bodies can also be used. They are expediently used in the form of a water-soluble salt. In contrast to the untreated dyeings, the dyeings obtainable in this way show improved waterfastness. It has been proposed to add higher molecular weight aliphatic amines to the dyebath or to treat the fiber with such compounds before dyeing in order to promote absorption of the dyes. However, this often causes the dyeings obtained to be unfastened to rubbing, which is not the case with the present process. Example I Cotton yarn is made with direct deep sweat. EW extra (cf. Schultz, Farbstofftabelleri, 6th edition, 1923, No. 462) in the usual: - 'way dyed, rinsed and with a water @; The body's solution was treated "by the peralkylation of heptadecylamine obtained from stearic acid by Curtius degradation (trimethylheptadecylammonium sulfate).

The waterfastness of the dye obtained in this way is in contrast to that the untreated color is significantly improved. Example 2 becomes cotton fabric with diamine green B (see Schultz, color tables, 6th edition, 1923 No. 474) 'like Customarily colored and with an aqueous solution of heptadecylamine and diethylaminoethyl chloride Treated compound produced and rinsed (diethylaminoethylene heptadecylamine).

The dyeing treated in this way is fast to water and over-dyeing In contrast to that of the untreated dyeing, it was flawless. Example 3 cotton yarn is used with Congoorange R (see S c h u 1 t z, Dye tables, 6th edition, 1923, No. 373) dyed, rinsed and treated with a solution of dodecylamine (obtained from Lauric acid by hydrogenation and replacement of the hydroxyl by the amino group) Reaction treated with glycol chlorohydrin compound and rinsed (Oxäthyldodecylamin).

The water and acid fastness of this dyeing treated in this way is good in contrast to that of the untreated dyeing. Example 4 Cotton yarn is dyed in the usual way with diamine fast yellow (see Schultz, Dye Tables, 7th Edition, No. 935), rinsed and treated with an aqueous solution of monostearyltriethylenetetramine acetic acid, obtainable by the method of British Patent 337368. Example 5 Cotton fabric is dyed with Congo Orange It in the usual way, rinsed and treated with an acetic acid solution of oleyl base mixture obtained by the process of British Patent 337 368, Example 3. Similar good results are obtained if one uses Instead of the acidyl bases mentioned in Examples 4 and 5, monostearil base mixture, obtainable in accordance with Example 3 of British Patent 337 368 ', where the dyes mentioned are replaced by other dyes, e.g. by benzene light red 6 BL, S chu 1 tz, Dye tables, 7th edition No. 566; Benzolichtrot 8 B1, S chultz, Dye tables, 7th edition, No. 5 66; Benzolichtblau FR, Schultz, Dye tables, 7th edition, No. 6.17, Benzopurpurin q.B, S chu 1 tz, Dye Tables, 7th Edition, No. q.48. Example 6 With Congoorange R (cf. Schultz, Dye Tables, 6th Edition, -i923, No. 373) in the Cotton yarn dyed in the usual way is rinsed in Fresh liquor containing 2 g of a base obtainable from hexachloride paraffin with alcoholic ammonia in the form of its acidic salt by the process of patent 52I622, treated for about 20 minutes at 30 to 35 ° C. The water and acid boiling fastness of the dyeing obtained in this way is very much higher than that of the untreated dyeing.

A similarly good result can also be achieved when using others bases prepared by the process of patent specification 521,622, e.g. B. the base from di-, tri-, tetra-chlorinated hard paraffin, from the corresponding polychlorinated soft paraffins or the bases from other polychlorohydrocarbons. Instead of the formic acid Salts of the bases, the corresponding hydrochlorides, acetates, etc. can also be used will. In the same way, those with other substantive dyes, such as B. Benzopurpurin, Benzolichtrot 8 BL, the colorations obtained are greatly improved. Example 7 Cotton yarn is dyed with light red benzene 8 BL and rinsed, then with a product obtainable by benzylating octodecyltriethylammonium bromide aftertreated in formic acid solution as described above. The one that can be achieved in this way The color is considerably more water and acid-proof than the untreated color. The lightfastness is excellent. Example 8 Cotton yarn dyed with Benzolichtblati FR is, as indicated above, with an acidified solution of a quaternary ammonium base treated by peralkylation one according to patent 521 622 from hexachloride hard paraffin with alcoholic ammonia base with dimethyl sulfate receives.

A dyeing is obtained which is fast to water and acid boiling that of the untreated color is greatly increased. Example 9 cotton yarn with one of the dyes mentioned was colored in the usual way, is with a acidified solution of a base -treated, which one according to the method of the patent 552 z68 by condensation of a according to the method of patent specification 52.1 622 from Hard hexachloride paraffin with alcoholic ammonia base and ethylene oxide The dyeings treated in this way also show a very strong improvement the respective fastness properties. Example io cotton yarn is 2o / 6 brilliant benzo fast violet 5 RH (see Schultz, Dye Tables, 7th Edition, No. 342) - dyed, rinsed and with a solution of the hydrochloric acid salt of 2.5 g of octylamine in the liter% hour cold treated, rinsed and dried.

The water fastness of this dye treated in this way is markedly improved.

Claims (1)

PATENT CLAIM: A process for improving the water fastness of dyeings with dyes containing sulfonic acid or carboxyl groups, characterized in that the dyes on the fiber by aftertreatment with a higher molecular weight aliphatic amine of at least 8 carbon atoms or a higher molecular weight organic ammonium compound of the aliphatic series with at least 8 carbon atoms transferred water-insoluble dye salts, the water-soluble salts mono- or diacylated diamines or the corresponding quaternary ammonium compounds and the compounds obtained according to Patent Eil 373 should be excluded.