DE19603401A1 - Preventing yellowing of ready-made textile goods dyed with vat dye - Google Patents

Abstract

Stabilisation of ready-made textile goods, which are dyed with vat dyes, against yellowing in air comprises treatment with an aqueous liquor containing peroxide(s) and optionally fabric conditioner and then drying. Also claimed are aqueous liquors for this purpose, which contain peroxide(s) and conditioner(s) in 1:4-4:1 weight ratio.

Description

The invention relates to a method for stabilizing con finished textile goods that are dyed with combinable dyes is against yellowing when stored in air and aqueous Fleets, to stabilize the textile goods against Yellowing.

With longer storage of ready-made textiles, which are dyed with combinable dyes, a change in color occurs in particular on the folds of the textile goods which are exposed to the influence of air. The reason for this is that traces of ozone and nitrogen oxides (NO _x ), which are present in the air, react with the dyes present in the dyed textiles. Textiles dyed with indigo and then assembled are particularly sensitive to the effects of ozone and / or nitrogen oxides. The yellowing of the dyed textiles is particularly disruptive when shipping and storing the textiles in retail. Especially in the case of denim articles and especially those with a stone-wash look, a disturbing color change occurs on the outside of stacks of goods. If you wash these textiles with cold water, you can completely remove the disruptive oxidation products of the dye, but there are light spots on the fabric.

The invention is therefore based on the object of a method for Stabilization of ready-made textile goods that link with bare dyes is colored and its color changes during storage changed in the air to provide against yellowing.

The object is achieved with a method for Stabilization of ready-made textile goods that link with dyes is colored, against yellowing during storage in the air when you see the dyed and made-up textile goods treated with an aqueous liquor containing at least one peroxide and optionally contains a fabric softener, and it finally dries.

The invention also relates to aqueous liquors for stabilization lization of ready-made textile goods that can be combined with Dyes is colored against yellowing, the liquors min  at least one peroxide and at least one fabric softener Weight ratio 1: 4 to 4: 1 included.

The textile material preferably consists of cellulose fibers or ent keeps cellulose fibers mixed with other fibers, e.g. B. Poly ester fibers, polyacrylonitrile fibers, polyamide fibers, polyurethane fibers, wool or cellulose acetate fibers. It is in the form of dyed and made-up goods, e.g. B. is Pants, skirts or jackets, each with combinable dyes are colored. Linkable dyes are, for example, anthra quinoid dyes, indigoid dyes and sulfur dyes, as described in the Color Index (C.J.) (see Color Index, 3rd edition 1971, volume 3, pages 3719 to 3844, and volume 4, C.J.- No. 58000 to 7400, Soc. Dyers and Colorists, England) or also in the Textbook of Textile Chemistry, H. Rath, Springer Verlag 1952 are to be found.

The method according to the invention is of particular importance for the Stabilization of ready-made indigo-dyed textiles against yellowing. Amongst indigo-dyed fabrics are above all Understand denim items. Such articles often become one subjected to stone washing, in which part of the indigo dated Textile goods are washed and goods with a so-called stone wash look is obtained. This is preferably lightened blue jeans. Such are textiles dyed with indigo particularly sensitive to ozone and / or nitrogen oxides, each are present in traces in the air. Already quantities of for example, 50 mg of ozone per cubic meter of air lead to storage time of for example 4 weeks to a strong yellowing of the dyed textiles, so that these goods are often rekla be lubricated. A color change occurs mainly on the outside side of stacks of goods that are particularly exposed to the air is. The color change of the goods dyed with indigo is based on the formation of oxidation products of the indigo, e.g. B. arises Isatin.

Such a color change of fabric, the colored with combinable dyes can be effective be prevented that the colored and made-up Textile treated with an aqueous liquor containing at least one Contains peroxide and then the textile material treated in this way dries. All compounds come into consideration as peroxides, which have a peroxo group. One can use both inorganic and also use organic peroxo compounds, for example Sodium perborate, sodium percarbonate, peracetic acid or their Alkali metal salts, sodium peroxide, barium peroxide, sodium peroxo disulfate, potassium peroxodisulfate, inorganic salts, the water  contain peroxide bound like sodium perborate and water Peroxide can also be used in a non-stabilized form will. You can use all hydroperoxides. Example wise arise when air is introduced into aqueous solutions of tert-butyl hydroquinone or trimethyl hydroquinone peroxides. Also in the reaction of unsaturated fatty acids such as oleic acid or Linolenic acid in an aqueous medium with air produces hydroperoxides, those for the inventive stabilization of indigo-colored Textiles can be used.

Of particular advantage for the stabilization according to the invention the peroxide is used in the form of hydrogen peroxide polymer Complexes. Such complexes are published in numerous publications gene described. So, for example, are water-insoluble and what ser soluble hydrogen peroxide complexes of polymers N-vinylhe terocycles such as poly-N-vinylpyrrolidone and poly-N-vinyl-2-capro known lactam, cf. US-A-3 376 110 and US-A-3 480 557. These Complexes are, for example, by evaporating an aqueous Suspension or solution of polymer and hydrogen peroxide produced. In addition, those from US-A-5 077 047 are suitable knew free-flowing powdered hydrogen peroxide poly N-vinylpyrrolidone complexes, which are obtained by drying the addition pro Products of hydrogen peroxide and polymer in the fluidized bed procedures are available. Other suitable peroxides are Addi tion products of hydrogen peroxide on copolymers of N-Vi nylpyrrolidone and monomers with a quaternary nitrogen atom.

In addition, there are the complexes described in WO-A-95/17345 from hydrogen peroxide and a polymer matrix. As For example, the following polymers are described in the matrix:

• A) N-vinylcaprolactam homopolymers,
• B) N-vinylcaprolactam copolymers with N-vinylpyrrolidone, N-vinylimidazole, acrylic or methacrylamidopropyl 3-sulfonic acid, acrylic or methacrylic acid or mixtures from this as comonomers in the weight ratio of N-vinylcapro lactam to comonomers from 20: 1 to 1:20,
• C) N-vinylpyrrolidone copolymers with N-vinylimidazole, Acrylic or methacrylic acid or mixtures thereof as Comono in the weight ratio of N-vinylpyrrolidone to comonomers from 20: 1 to 1: 20,  
• D) N-vinylimidazole homopolymers based on the heterocyclic Ring can be substituted by up to three C₁ to C₄ alkyl radicals and are in N-quaternized form by C₁ to C₄ alkyl can,
• E) Mixtures of monosaccharides, oligosaccharides, poly saccharides or derivatives thereof with the polymers A) to D) in a weight ratio of 1:99 to 90:10,
• F) mixtures of monosaccharides, oligosaccharides, starches, Starch degradation products or derivatives thereof with N-vinyl pyrro lidon homopolymers in a weight ratio of 1:99 to 90: 10,
• G) mixtures of trehalose, sucrose, glucose, α-, β- or γ-cyclodextrins or derivatives of these cyclodextrins or Mixtures therefrom with the polymers A) to D) or with N-vinylpyrrolidone homopolymers in a weight ratio of 1:99 to 100: 0 or
• H) in the case of C₁ to C₄ monopercarboxylic acid and C₄ to C₁₈-dipercarboxylic acid complexes N-vinylpyrrolidone homopolymeri sate

starts.

Among N-vinylcaprolactam is N-vinyl-ε-caprolactam (N-vinyl-2-caprolactam) to understand. Among N-vinyl pyrrolidone is To understand N-vinyl-2-pyrrolidone.

Copolymers B) based on N-vinylcaprolactam occur all N-vinylcaprolactam-N-vinylpyrrolidone copolymers, N-Vi nylcaprolactam-N-vinylimidazole copolymers, N-vinyl caprolactam-N-vinylpyrrolidone-N-vinylimidazole terpolymers, N-vinylcaprolactam-acrylic or methacrylic acid copolymers and N-vinylcaprolactam-acrylic or methacrylamidopropyl-3-sulfonic acid Re-copolymers into consideration. Any present Carboxylic or sulfonic acid groups can partially or completely present as salts, e.g. B. as sodium, potassium, Ammonium or substituted ammonium salts.

The polymers B) and also the homopolymers A) can not be networked or networked. Through networking, the degree of Water solubility can be set. Also popcorn polymers from N-vinyl-caprolactam and N-vinylpyrrolidone, cf. DE-A 24 37 629 are used as a matrix for stabilizing water suitable for peroxide. Crosslinking is used at Polymeri  sation divinylethylene urea as a cross-linking comono meres in amounts of e.g. B. 0.5 to 10 wt .-%, preferably 2 to 8% by weight, based on the weight of the monomers mentioned under B) ren, too. But you can also crosslink by adding Cause catalysts such as alkali metal hydrides or borohydrides ken.

In the case of the copolymers B), the weight ratio is from N-vinylcaprolactam to the comonomers N-vinylpyrrolidone, N-vinyl imidazole, acrylic or methacrylamidopropyl-3-sulfonic acid and / or Acrylic or methacrylic acid, for example 20: 1 to 1:20, preferred wise 15: 1 to 1: 4.

Copolymers C) based on N-vinylpyrrolidone occur all N-vinylpyrrolidone-N-vinylimidazole copolymers and N-vinylpyrrolidone-acrylic acid or methacrylic acid copolymers into consideration. The copolymers C) can in analogy to the Po Lymerisaten A) and B) be uncrosslinked or crosslinked.

In the case of the copolymers C), the weight ratio is from N-vinylpyrrolidone to the comonomers N-vinylimidazole and / or Acrylic or methacrylic acid e.g. B. 20: 1 to 1:20, preferably 4: 1 to 1:10.

As by up to three, especially by up to two, above all N-vinylimidazole substituted by a C₁ to C₄ alkyl radical Homopolymers D) come, for example, from 2-methyl, 4-methyl or 5-methylvinylimidazole into consideration.

As N-vinyl-N'-C₁ to C₄-alkyl imidazolium homopolymers D) can, for example, N-vinyl-N'-methyl, N-vinyl-N'-ethyl or N-vinyl-N'-butyl-imidazolium homopolymers are used. As counterions to the cationic quaternary nitrogen atoms can e.g. B. chloride, bromide or methosulfate occur. The Quaternization of the nitrogen atoms can take place before or after the polymer rization has taken place. The homopolymers D can by analogy to be polymers A to C uncrosslinked or crosslinked.

Mixtures of the polymers A) to D) or N-vinyl pyrrole don homopolymers with carbohydrates or carbohydrate derivatives Data according to E) and F) show particularly good application properties ten, in particular is the dissolving power of the finished water peroxide or percarboxylic acid complexes optimal in water. The Weight ratio of the carbohydrates or carbohydrate derivatives to the polymers mentioned is, for example, 1:99 to 90:10, preferably 10:90 to 70:30.  

The carbohydrate component is a natural substance based on monosaccharides, oligosaccharides, polysaccha riden or their derivatives. From an economic point of view seen, starches are preferably used in the production, thermally and / or mechanically treated starches, oxidative, hy starches degraded drolytically or enzymatically, oxidized hydrolyz table or oxidized enzymatically degraded starches as well as chemically modified starches and chemically modified monosaccharides and Oligosaccharides. In principle, all strengths are suitable. The Starches are practically insoluble in water and can be in known by thermal and / or mechanical treatment or by an enzymatic or an acid-catalyzed Degradation can be converted into a water-soluble form.

As starch breakdown products, either by oxidative, hydroly tables or enzymatic breakdown of starch are available, the following compounds may be mentioned, for example: dextrins such as White and yellow dextrins, maltodextrins, glucose syrup, maltose syrup, hydrolysates with a high content of D-glucose and maltose and D-glucose and its isomerization product fructose. As a comm Component B are also suitable for mono- and oligosaccharides such as Galactose, mannose, ribose, sucrose, raffinose, lactose, Trehalose and cellulose degradation products, for example Cellubiosis and its oligomers. Cyclo are also suitable dextrins of different ring sizes and their derivatives. Prefers non-reducing saccharides are used as the polymer matrix.

If, according to G), trehalose, saccha is used as the carbohydrate component rose, glucose, α-, β- or γ-cyclodextrins or derivatives thereof Cyclodextrins or mixtures thereof, their proportion in Ma trix material can be increased up to 100% by weight, d. H. you can do that Apply per compound even on pure carbohydrates. The Weight ratio of these carbohydrate components to the polyme Risks A) to D) or N-vinylpyrrolidone homopolymers can So going beyond E) or F) 1:99 to 100: 0, preferably 10: 90 to 100: 0.

The K values (according to Fikentscher) as a measure of the molecular weight the polymers A) to D) and H) used are usually included 10 to 90, especially 17 to 60 (measured in 1 wt .-% aq solution at 25 ° C). Because the cross-linked polymers in water or other solvents are insoluble, you can not Determine the K value.

In the preparation of the polymers A) to D) and H) or the polymers on which the mixtures E) to G) are based small amounts of other common copolymerizable monomers  add to the properties of these polymers in the frame slightly modify the present invention.

Suitable as C₁ to C₄ monopercarboxylic acids (monoperoxycarboxylic acids) especially peracetic acid, perpropionic acid, perbutyric acid and Isoperbutyric acid. Performic acid can also be used if the necessary safety precautions with regard to the Instability of this connection.

Suitable as C₄- to C₁₈ dipercarboxylic acids (diperoxycarboxylic acids) in particular 1,12-diperoxydodecanoic acid and 1,14-diperoxyte tradecanic acid.

Solutions of per-compounds containing for example 1 to 80% by weight, in particular 3 to 50% by weight Hydrogen peroxide or from 0.5 to 30 wt .-%, in particular 1 to 15% by weight for the percarboxylic acids in water, in carboxylic acids, mostly the underlying carboxylic acids, or mixtures of Water and carboxylic acids. When using percarboxylic acids Aqueous solutions usually also contain hydrogen per oxide.

The application of the aqueous solutions of the per compounds on the Powdery or pre-granulated matrix A) to H) takes place before preferably in the fluidized bed, but can also in a pre switched step can be made. The application takes place expediently by spraying the solutions by means of nozzles.

The fluidized bed drying to remove the mainly by the aqueous solutions of the per compounds introduced water is preferably simultaneously with the application of the Per Connections made to the matrix, but can also be done in one separate step in the same or in a downstream one Apparatus are carried out. For a free-flowing, i.e. H. free-flowing powder of hydrogen peroxide or percarboxylic acid To get complex, the water content should be less than 5% by weight after drying; blocking is so ver avoided.

The temperature when applying the aqueous solutions of the Per Connections are usually at 25 to 80 ° C for the supply air and in the exhaust air at 25 to 70 ° C, is preferred for inlet and outlet air a temperature range of 30 to 60 ° C, in particular 35 to 55 ° C maintained. More details on how to do this of such a fluidized bed (fluidized bed) process theoretical basics, reactor types and technical execution Ullmann's encyclopedia of technical chemistry,  4th edition, Volume 3 (1973), pp. 433-460 and pp. 480-493 will.

The hydrogen peroxide and percarboxylic acid com Plexes have per-compound contents of 1 to 35% by weight preferably 3 to 30% by weight, in particular 5 to 25% by weight on the solids content in the product obtained.

The hydrogen peroxide and percarboxylic acid complexes described can in principle also be easily and with the same equipment , purities and levels of per-compounds due to precipitation from aqueous solutions of the polymers A) to D) and H) by Zu administration of aqueous solutions of the per compounds, filtering or Ab decant and preserve drying, only this technique is not with satisfactory results on an industrial scale transferable.

Powdery hydrogen peroxide polymer complexes are u. a. also obtainable by aqueous or aqueous-alcoholic Lö solutions or suspensions of polymers based on hetero cyclic N-vinyl compounds and hydrogen peroxide atomized and subjected to spray drying in an inert gas stream. As a butt Lymerisate come for example polyvinyl caprolactam, polyvinyl pyrrolidone, polyvinylimidazole or copolymers of vinyl pyrrolidone and vinylimidazole or from polyvinylpyrrolidone and Polyvinylcaprolactam or from polyvinylimidazole and polyvinyl caprolactam.

For the inventive method for stabilizing confections tioned, preferably dyed with indigo textile powdered complexes of aspartimide units are also found polymers and hydrogen peroxide. Such complexes are available, for example, by powdering As Partimide units containing polycondensates with a medium Particle diameter from 10 µm to 5 mm with hydrogen peroxide in Brings contact and the mixture dries. The mixtures can for example in a fluidized bed, in which one polycondensates containing powdered aspartimide units With the help of an inert gas, whirls up and into the fluidized bed Temperatures of 20 to 80 ° C brings hydrogen peroxide. The Mixtures can, for example, have a water content of less be dried less than 5% by weight. The aspartimide units ent Holding polymers are, for example, by polycondensation made of aspartic acid by known methods, e.g. B. by thermal condensation, taking powdered asparagine acid heated to temperatures of 180 to 250 ° C or by Aspartic acid in the presence of acids such as phosphoric acid or  Carboxylic acids condensed at temperatures from 140 to 220 ° C. The Molar mass of the aspartimide units condensed contained Po Lymerisate is preferably in the range of 1000 to 100,000. The complexes of poly containing aspartimide units Condensates and hydrogen peroxide contain 1 to 45, preferably 5 to 20 wt .-% hydrogen peroxide.

To stabilize ready-made textiles made with indigo are colored, you can also use hydrogen peroxide-urea complexes use that according to that described in DE-A-34 44 552 Fluid bed processes can be produced. Preferably hydrogen peroxide-polyvinylpyrrolidone complexes are used a hydrogen peroxide content of, for example, 1 to 12% by weight, hydrogen peroxide or sodium perborate.

The aqueous liquors to stabilize ready-made Textile that is dyed with combinable dyes against Yellowing contains at least one peroxide and at least one Fabric softener in a weight ratio of 1: 4 to 4: 1. The water The content of such mixtures is, for example, 10 to 50 preferably 15 to 35% by weight. All come as textile softeners compounds described in the literature and those commercially available available products. An overview of Weichma You can find, for example, in Ullmann's encyclopedia of tech African chemistry, 4th edition, Verlag Chemie GmbH, Weinheim, 1983, Volume 23, pages 81 to 86. On the preferred ones Plasticizers include silicone dispersions. This is what it is about are, for example, α, ω-dihydroxypolydimethylsiloxyanes a molecular weight of about 1000 to 100,000 or around polyhydrogenme thylsiloxanes. The polysiloxanes can replace the terminal ones Hydroxyl groups also amino groups, β-aminoethylamino or epoxy groups included. Other preferred soft tissues are condensation products based on fatty acids with min least 10 carbon atoms and amines and / or alkanolamines. As amines come preferably for the production of the condensation products Polyalkylene polyamines into consideration. The condensation products can if necessary by reaction with quaternizing agents such as Dimethyl sulfate or benzyl chloride must be quaternized.

Examples of very particularly preferred fatty acid condensation products are compounds of the formulas

and

where the variables have the following meaning:
R¹ = C₁₅-C₁₇ alkyl, especially C₁₇ alkyl;
R² = hydrogen, methyl or benzyl;
X⊖ = chloride, formate, acetate or methyl sulfate.

Other suitable plasticizers are, for example, oxethylation products of long chain fatty acids, alcohols, fatty acid amides and fatty amines. The alkyl radicals in the above Ver bond classes have at least 10 to 22, preferably 13 to 18 carbon atoms. The degree of oxyalkylation of fatty acids, fat alcohols, fatty acid amides and fatty amines can, for example, 2 to 20, preferably 10 to 18. For the oxyalkylation come preferably ethylene oxide and propylene oxide or mixtures from ethylene oxide and propylene oxide. You can both Block copolymers and statistical copolymers of Use oxyalkylated products as textile softeners.

Another class of plasticizers are plasticizer dispersions. These are, for example, dispersions of fet ten, oils, fatty acids, fat derivatives, waxes, paraffins or Polyethylene. Mostly you need to emulsify these substances non-ionic or anionic emulsifiers. The plasticizer disper Sions based on polyethylene waxes usually have molecular weights from 1000 to 3000, preferably molecular weights of about 2000 and one Melting range from 90 to 130 ° C.  

Those aqueous liquors which have a what are particularly preferred serstoffperoxid-polymer complex z. B. an addition product of Hydrogen peroxide on polyvinyl pyrrolidone and a polydimethyl contain siloxane as a fabric softener.

The textiles, preferably dyed and made with indigo According to the invention, lines are thereby stabilized against yellowing siert that they are treated with an aqueous liquor, the min contains a peroxide or ent treatment holding fleets, which also has a textile have plasticizers. The fleets are either sprayed on applied to the textiles or treated with the dye ten and ready-made textiles in an aqueous bath, the at least one peroxide and optionally a fabric softener contains. For this, these connections are preferably the last Rinsing bath when washing the dyed and made-up textiles lien, e.g. B. jeans wash applied. The temperature of the treatment lungsbades can be for example 5 to 50 ° C. Preferably the treatment according to the invention takes place at temperatures of 10 up to 30 ° C, usually taking the treatment at room temperature carries out. Treatment of textile materia according to the invention lien in the baths is, for example, 1 minute to 1 hour, preferably 5 to 25 minutes. The textile material treated in this way becomes then removed from the baths and dried. Drying can Room temperature or with warm air up to temperatures of 150, preferably up to 120 ° C. Higher temperatures should be avoided because of the risk of decomposition of the peroxides the.

The amount of peroxide is, for example, 0.01 to 3, preferably as 0.1 to 2.0 wt .-% peroxide, based on the dry Ge importance of the colored and ready-to-wear dyes textiles. The treatment fleets contain, for example as 0.01 to 3, preferably 0.1 to 2.0 g / l of at least one Peroxide and optionally 0.02 to 6.0 g / l, preferably 0.2 up to 4.0 g / l of at least one fabric softener.

The dyed and made-up treated according to the invention Textiles also suffer at relatively high levels, even in summer Concentrations of ozone and nitrogen oxides even after 3 months Storage time practically no yellowing. This finding also applies to goods dyed and made with indigo, which with a Mixture of a peroxide and a plasticizer based on silicone has been treated. This finding is surprising because of Sili plasticisers usually as special for indigo-dyed goods which promote yellowing.  

The percentages in the examples mean percent by weight.

example 1

120 indigo-dyed blue jeans made from cotton denim á 0.7 kg (= 84 kg total weight) were made according to the usual stone wash process lightened by approx. 80%. With the last rinsing bath a liquor volume of 333 l (liquor ratio 1: 4) 1 kg of a solid, water-soluble hydrogen peroxide polyvinyl pyrrolidone adducts with a hydrogen peroxide content of 12% added. The goods were in the bath at room temperature for 15 minutes treated. Then you threw the pants and dried them Warm air of 120 ° C. When storing the trousers treated in this way Air containing ozone (approx. 50 mg ozone per m³) was also after 7.5 weeks no yellowing discernible, while not for comparison according to the invention stabilized under a conventional stone wash thrown pants turned yellow after only 2.5 weeks.

Example 2

An aqueous liquor is first prepared by making one commercially available silicone plasticizer of an amino-functional poly Siloxans of the type Siligen® SIE in the form of a 45% aqueous Emulsion with an adduct of hydrogen peroxide with polyvinyl pyrrolidone with a hydrogen peroxide content of 12%. The weight ratio of polysiloxane emulsion to hydrogen pe roxide-polyvinylpyrrolidone complex was 2: 1. This mixture is very stable and can be practically several without loss of effectiveness Months. With indigo-dyed blue jeans trousers following the stone wash with an aqueous liquor in the Fleet ratio treated 1: 5, the 6 g / l of those described above Mixture of polysiloxane emulsion and hydrogen peroxide polyvi Contained nylpyrrolidone complex. After a treatment period of The pants were spun at room temperature for 10 minutes dried at 120 ° C.

For comparison, pants were subjected to a stone wash had been treated with an aqueous liquor containing 4 g / l a commercially available plasticizer based on an amino function contained polysiloxane of the Siligen SIE type. The treatment The duration of the training was 10 minutes. The pants were then thrown changed and dried at 120 ° C.

The treated according to the invention and those according to the prior art nik only treated pants with a softener Nice soft, flowing handle. While according to the state of the Technology only with pants treated with plasticizer after 2 weeks  were yellowed with plasticizers and hydrogen pero xid-polyvinylpyrrolidone complex pants treated according to the invention still in perfect condition after 8 weeks.

Claims (10)

1. A method for stabilizing made-up textile material, which is colored with combinable dyes, against yellowing during storage in the air, characterized in that the colored and made-up textile material is treated with an aqueous liquor which contains at least one peroxide and, if appropriate, a textile plasticizer contains, and then it dries. 2. The method according to claim 1, characterized in that one Textiles dyed and made up with indigo. 3. The method according to claim 1 or 2, characterized in that to be made with indigo dyed and made-up denim items acts. 4. The method according to claim 1 or 2, characterized in that textiles dyed and made with indigo delt that have been subjected to a stone wash. 5. The method according to any one of claims 1 to 4, characterized records that the peroxide in the form of hydrogen peroxide Uses polymer complexes. 6. The method according to any one of claims 1 to 4, characterized records that perborates are used as the peroxide. 7. The method according to any one of claims 1 to 4, characterized records that the treatment in aqueous liquors before takes at least one peroxide and at least one tex Contain plasticizers in a weight ratio of 1: 4 to 4: 1 ten. 8. The method according to claim 7, characterized in that one as textile softener polysiloxanes or condensation products based on fatty acids with at least 10 carbon atoms and ami NEN and / or alkanolamines. 9. Aqueous liquors to stabilize ready-made Textile that is dyed with combinable dyes against Yellowing, characterized in that they have at least one Peroxide and at least one fabric softener by weight ratio 1: 4 to 4: 1 included.   10. Aqueous fleets according to claim 9, characterized in that they contain a polysiloxane as a fabric softener.