WO2002061199A2

WO2002061199A2 - Hydrogel matrix systems for dressing textiles

Info

Publication number: WO2002061199A2
Application number: PCT/EP2002/000825
Authority: WO
Inventors: Maren Jekel; Pavel Gentschev; Tatiana Schymitzek; Jacques Breyer; Annett Lossack; Konstanze Mayer; Peter Schmiedel; Christel Adomat
Original assignee: Henkel Kommanditgesellschaft Auf Aktien
Priority date: 2001-01-30
Filing date: 2002-01-26
Publication date: 2002-08-08
Also published as: AU2002244678A1; EP1373631A2; WO2002061199A3

Abstract

The invention relates to a method for dressing, particularly temporarily, textiles, especially synthetic textiles, such as textile clothing. A hydrogel is applied to the surface of the textile, particularly to the textile fibres and the textiles which have been treated in such a manner are dried. According to the desired applicational function, the hydrogel can be charged with additional active ingredients or constituents.

Description

Hydrogel matrix systems for finishing textiles

The present invention relates to hydrogel matrix systems for the finishing and finishing of textiles.

In particular, the present invention relates to a method for, in particular, temporary finishing or finishing of textiles, in particular synthetic textiles, preferably textile clothing, with hydrogel matrix systems to achieve or modify certain properties (e.g. to increase the wearing comfort of the textiles or to increase the Water absorption capacity, to provide deodorizing properties, to provide UV protection, to refresh colors or for dyeing, etc.). The present invention likewise relates to the textiles treated by the process according to the invention.

Furthermore, the present invention relates to the use of hydrogel matrix systems for achieving or modifying certain properties of textiles, in particular synthetic textiles, preferably textile clothing (e.g. increasing the wearing comfort or increasing the water absorption capacity of textiles, finishing with deodorizing properties, equipment) with UV protection, color refreshment or coloring etc.). The present invention likewise relates to such hydrogel matrix systems themselves and to compositions, in particular dispersions, which contain such hydrogel matrix systems.

In particular, textiles are particularly comfortable to wear, and their hydrophilicity and / or porosity enable high moisture absorption ("moisture absorption"). So z. B. Cotton is able to absorb up to 7 to 10% (w / w) of its mass of water, and only feels moist to a certain degree. In contrast, synthetic textiles with a hydrophobic character, such as polyester, have only a low water and moisture absorption capacity. So z. B. Polyester fabric absorb water only to a very small extent of approx. 0.5% (w / w) of its own weight. Permanent finishes of synthetic fibers are therefore often aimed at increasing the hydrophilicity (water absorption capacity) and / or porosity of the textile fabric. High quality functional textiles, such as B. the so-called membrane textiles "Sympatex®" and "Gore-Tex®" are materials with a high MVTR ("moisture yapor transmission rate"), which are permeable to water vapor, but are impermeable to water in liquid form. By "transporting" the water vapor molecules from the inside into outer, more hydrophilic textile layers, textiles with such "climate membranes" are extremely comfortable to wear. The disadvantage of the textiles known from the prior art with permanent equipment for increasing the wearing comfort, in particular the water absorption capacity, is their complex production.

Furthermore, the hygienic textile equipment is increasingly attracting the interest of man-made fiber manufacturers and textile suppliers. The products available on international markets are given an antimicrobial property, in particular by spinning the active ingredients into the polymer matrix. The controlled release of active substances from microcapsules which have been incorporated into the corresponding textile fibers is also known. Possible toxic and allergic reactions of the previously used chemical agents, generally biocides and the like, are problematic. As a result, there are great reservations about the use of permanent antimicrobial equipment for textiles worn close to the skin. Newer approaches therefore have the goal of developing skin-compatible yarn finishing, for example based on chitosan (D-glucosamine). Even an addition of 10% chitosan fiber is sufficient to ensure the long-term hygienic effectiveness of the yarn, with a reduction rate greater than 99% compared to dermatophytes and Gram-positive bacteria. However, spinning tests have shown that the addition of only 5 to 15% chitosan fibers leads to a deterioration in the running behavior of the machines due to their brittleness. The disadvantage of these textiles known from the prior art with permanent hygienic finishing is their complex production. So far, no method has been described in the prior art, the water absorption capacity of textiles, especially synthetic textiles, such as. B. textile garments, in a relatively simple manner, for example during a washing and cleaning step or in a subsequent post-treatment step. This is of particular interest, however, if a temporary modification of the textile surfaces is to be achieved, which is simply to be applied subsequently and removed from the textile during the next washing and cleaning process.

In addition, no method is known from the prior art for subsequently providing textiles with certain properties in an efficient and simple manner, or for subsequently modifying certain properties of the textiles (e.g. wearing comfort of the textiles, water absorption capacity, finishing with deodorizing properties, finishing with UV -Protection, color refreshment or coloring etc.) ..

The object of the present invention is to temporarily modify the surfaces of textiles, in particular synthetic textiles, in such a way that they in particular have an increased ability to absorb water and thus the wearing comfort, in particular the moisture absorption, is increased during wear.

Another object of the present invention is to provide a method which enables the temporary finishing of textiles, in particular textile surfaces, preferably synthetic textiles, with improved water absorption or water absorption capacity. In particular, such a method should also provide the possibility of carrying out the temporary modification of the textiles as simply as possible, and should also offer the possibility of the temporary modification being relatively easy to remove, for example during the next washing and cleaning process. At the same time, care should be taken to ensure that the high water absorption capacity of textiles with an already good water absorption capacity such as cotton etc. such treatment is not affected. This is of particular interest for blended fabrics based on synthetic and natural fibers.

Another object of the present invention is to provide a method which makes it possible to retrofit textiles with certain properties or to modify certain properties (e.g. comfort, water absorption, antibacterial or deodorizing properties, UV protection, color refreshment) , Coloring etc.).

Within the scope of the invention, a method was developed which, among other things, is able to temporarily increase the water absorption of textiles, in particular synthetic textiles. Furthermore, this method also enables these textiles to be equipped with further properties or a modification of certain properties.

The applicant has surprisingly found that the objects of the invention can be achieved by providing a hydrogel-based matrix system, which has a high absorption capacity, as temporary finishing of the textile surfaces to be treated, in particular items of clothing to be provided with improved water absorption capacity Has water. The water absorption capacity of the hydrogel particles is based on a simple swelling process of such matrix systems.

The present invention thus relates to a method for temporarily finishing textiles, in particular synthetic textiles, in which a hydrogel is applied to the textile surface, in particular the fibers of the textiles.

This treatment step is generally followed by a process step in which the textile fibers treated in this way are dried. Drying is preferably carried out under normal pressure and at ambient temperature, in particular at room temperature. However, drying can also be carried out at higher temperatures (e.g. in a tumble dryer). The hydrogel particles are not destroyed during drying, ie no forces are exerted on the hydrogel particles during the drying process.

After the drying process, the hydrogel matrices remain as the smallest particles on the textile surface. The hydrogel dispersions should therefore in particular be such that the individual hydrogel matrices on the textile surface are invisible or essentially no longer visible to the naked eye. Hydrogel dispersions with particle diameters in the micro and nanometer range are particularly suitable for this.

In the context of the present invention, a method was thus developed which enables a subsequent temporary finishing of textiles, in particular items of clothing, preferably synthetic textiles. Here hydrogels, in particular in the form of aqueous hydrogel dispersions, are used which are able to absorb water by swelling.

"Temporary equipment" in the sense of the present invention means in particular that the hydrogel particles applied to the textile surfaces or fibers on the textiles, e.g. B. while wearing the garment, and then, for. B. in the subsequent washing, can be removed again.

The method according to the invention can be applied to textiles of all kinds, preferably clothing. According to the invention, the term “textiles” is understood in particular to mean both fibers and finished textile products (for example fabrics, knitted fabrics, nonwovens, etc.), which can be present, for example, as a fabric or as an already processed product (for example a garment). The textiles can consist of any known materials, such as in particular any natural and / or synthetic materials, such. B. cotton, linen, silk, hemp, jute, wool, cupro, sisal, viscose, polyamide, polyester etc. and any other known textile materials and mixtures thereof (z. B. PES / BW). Other examples of synthetic textiles are textiles, which are different from elastane (EL), elastodiene (ED), fluoro (PTFE), polyacrylic (PAN), modacrylic (MAC), polyamide (PA), aramid (AR), polyvinyl chloride (CLF), polyvinylidene chloride (CLF), Derive polyester (PES), polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVAI), acetate (CA) or triacetate (CTA) or mixtures thereof.

In particular, the method according to the invention can be applied to synthetic textiles, preferably synthetic articles of clothing, since these generally have no or only a very low water absorption capacity or are only slightly hydrophilic. According to the invention, the term “synthetic textiles” means not only purely synthetic textiles, but also mixed textiles based on synthetic and natural textile fibers (eg mixed fabrics made of polyester and cotton).

The method according to the invention can be applied in particular to all types of textile fabrics. Examples of textile fabrics which can be treated by the process according to the invention are, in particular, woven goods such as woven fabrics, knitted fabrics such as knitted fabrics and knitted fabrics or also textile composite materials such as felt and nonwovens.

The temporary furnishing of the textiles in the manner according to the invention serves in particular to increase or improve the water absorption capacity (water absorption capacity) of textiles, in particular synthetic textiles, and thus also makes a significant contribution to increasing the comfort of textiles, in particular items of clothing. In other words, the method according to the invention is used in particular for the temporary finishing of textiles, in particular synthetic textiles, preferably textile clothing, with increased water absorption capacity (water absorption capacity) and with increased wearing comfort.

According to the invention, hydrogels are particularly suitable as hydrogel dispersions which have average particle sizes of the hydrogel particles of less than 100 μm, in particular less than 10 μm, preferably less than 1,000 nm, entirely particularly preferably less than 500 nm, (based on the swollen state).

Since hydrogels are generally water-containing systems (gels) based on hydrophilic but water-insoluble polymers, which are present as a three-dimensional network, the particles on the textile surface after the drying process are significantly smaller and generally only about a tenth or even less of their size original volume, d. H. of their volume in the swollen state.

Network formation in the hydrogels takes place primarily via chemical linkage of the individual polymer chains, in particular via covalent bonds, but is also possible via electrostatic, hydrophobic or dipole / dipole interactions between individual segments of the polymer chains.

The production of hydrogels, in particular in the form of micro- and nanoscale hydrogel dispersions, and the immobilization of active substances, in particular hydrophilic active substances, into the hydrogel matrices is state of the art and has already been described in numerous publications. Furthermore, hydrogels suitable according to the invention are also commercially available.

The formation of micro- and nanoscale hydrogel particles is familiar to the person skilled in the art and can be carried out, for example, via microemulsion polymerization of a water / oil emulsion stabilized in most cases with emulsifiers by homogenization using high-pressure homogenizers or rotor-stator homogenizers. The aqueous phase contains the dissolved polymers or monomers. In the case of the monomers and the simultaneous presence of bi- or multifunctional monomers, the addition of hydrophobic initiators leads to the formation of the polymer network via covalent bonds.

Monomers can also be kept in emulsion by simply adding surfactants to an aqueous solution. The polymerization then takes place in the micelles formed. By simply lowering the temperature of the emulsion, for example, polymers such as gelatin, agarose or polyvinyl alcohol gel if the latter is cooled to below freezing point and slowly thawed again.

All methods known from the prior art for producing micro- and nanoscale hydrogel dispersions are suitable. In the exemplary embodiments of the present application, the synthesis of the polyisopropylacrylamide (P-NIPAAm) hydrogels used as examples for application to textiles is described only by way of example.

Suitable hydrogels according to the invention are, for example, hydrogels based on natural polymers, for. B. polysaccharides such as modified starch and starch derivatives, dextrins, agarose, agar agar, curdlan, alginic acid and alginates, chitosans, polypeptides such as gelatin, pectins and pectinates, carageenans and cellulose and cellulose derivatives such as carboxymethyl cellulose, cellulose and ethyl acetate, cellulose and cellulose acetate their mixtures. All of these polymers can optionally also be present in a cationically modified form.

However, hydrogels based on synthetic polymers, such as, for example, are also suitable according to the invention. B. polyacrylates, polymethacrylates, polyacrylic acids, polymethacrylic acids, polyacrylamides, polymethacrylamides, polyurethanes, polyvinylpyrrolidones, polyvinyl alcohols, polyvinyl acetates or their copolymers and derivatives and mixtures thereof. All of these polymers can optionally also be present in a cationically modified form.

As described above, the hydrogels are generally applied to the textile surfaces or fibers in the form of aqueous hydrogel dispersions.

As described above, hydrogels are particularly suitable according to the invention as hydrogel dispersions, the mean particle sizes in the swollen state of less than about 100 μm, in particular less than 10 μm, preferably less than about 1,000 nm, very particularly preferably less than about 500 nm, because this has the particular advantage that such particles are so small that after application and drying they are invisible to the naked eye or almost no longer visible.

In particular, the hydrogel should consist of dimensionally stable particles. Of course, this does not rule out that the particles are deformable or deformable to a certain degree, in particular elastically deformable.

The hydrogel particles used can absorb up to a multiple of their own weight in water (e.g. certain polyacrylate hydrogels more than 120 g / g).

An improved absorption behavior of the hydrogel particles can additionally be achieved by their cationic modification. The person skilled in the art is familiar with the manner in which the cationic modification is produced. The cationic modification can, for example, be brought about by the fact that small amounts of cationic monomers are present in the starting monomer solution or emulsion to be polymerized, which are also polymerized in, so that the hydrogel particles are then cationically modified as a whole. Since many textile fibers, for example cotton fibers, are negatively charged after washing, cationically modified hydrogel particles can generally be applied particularly well.

As described above, the hydrogel is applied in particular in the form of an aqueous dispersion. The concentration of the aqueous hydrogel dispersions, in particular in use (for example after dilution of the rinse cycle with water), is preferably less than about 15 g / l, in particular less than about 10 g / l, preferably less than about 3 g / l , very particularly preferably less than about 1 g / l, based on the polymer content (dry weight) of the dispersion. The aqueous hydrogel dispersion can be applied, for example, by spraying onto the textile fibers or by immersing the textiles in the dispersion.

As "treatment solutions" to be applied are, according to the invention - as already explained - in particular aqueous hydrogel dispersions which, for example, either by using them as a spray, by immersing them in the appropriate dispersion or treating the textiles in the rinse cycle of a washing machine instead of or, for. B. can be applied in combination with a fabric softener. After a subsequent drying process, the hydrogel matrices remain as the smallest particles on the textile surface. The hydrogel dispersions should therefore be such that the individual hydrogel matrices are no longer visible on the textile surface. Hydrogel dispersions with particle diameters in the micro and nanometer range are particularly suitable for this. According to the invention, this means the range below about 100 μm, in particular 10 μm, preferably 1,000 nm, very particularly preferably 500 nm (swollen state).

As described above, the hydrogel dispersions are generally applied by spraying on as a spray, by immersion in solution or dispersion or in the washing cycle of the washing machine as post-treatment agent instead of or in combination with a fabric softener after the washing process.

As described above, the method according to the invention leads to textiles with increased water absorption capacity and increased wearing comfort.

Furthermore, it has been found that the hydrogels with which the textiles are treated also have a deodorizing effect because they absorb sweat through swelling, so that no moist, warm environment, which is responsible for the multiplication of microorganisms and thus for the formation of perspiration odors, can arise. The absorption of sweat is controlled by diffusion. Above all, water is absorbed, but also the inorganic and organic components of sweat (<1%) dissolved in water, such as. B. NaCI, phosphates, Ammonium, potassium, calcium and magnesium salts as well as urea, glucose, pyruvic acid, cholesterol, lactic acid, urocanic acid, amino acids etc. Hydrogels have the advantage that microorganisms cannot penetrate into the hydrogel due to the small pore size of the hydrogel particles. The desodizing effect provided by the hydrogel particles can be further increased by additionally loading the hydrogels with deodorants (deodorants), which will be described in more detail below.

Furthermore, there is also the possibility of incorporating or immobilizing additional substances (for example special active substances, active substances, ingredients and the like) in the hydrogels used according to the invention, which may or may not be released in a diffusion-controlled manner by swelling of the hydrogels. This makes it possible to provide the textiles with specific properties (subsequently) or to modify certain properties of the textiles (e.g. antibacterial or deodorant properties, UV protection, color refreshment, coloring, etc.), these properties being determined by the type and amount of the stored active ingredient, active ingredient, ingredient, etc. are determined.

The "loading" of hydrogels with active substances, active substances, ingredients etc. is generally known per se to a person skilled in the art: The "loading" of the hydrogel particles or matrices with active substances, active substances, ingredients and the like can take place, for example, in that these are present to polymerize starting monomer mixture or emulsion so that they are directly polymerized in situ. However, the "loading" of the hydrogel matrices with active ingredients, active ingredients, ingredients and the like can also be carried out subsequently (for example after freeze-drying the hydrogel) by a simple swelling process of the hydrogels in the preferably aqueous solution of the active ingredients, active ingredients, ingredients and the like. It is also possible to use combinations of the loading mechanisms described above. Methods for loading polymer particles with active ingredients etc. are known per se to the person skilled in the art. ever According to the loading method, the active ingredients etc. are physically and / or chemically incorporated into the hydrogel particles (e.g. stored, embedded, enclosed, encapsulated, dissolved, dispersed, adsorbed, chemically and / or physically bound etc.).

The amount of active substances, active substances, ingredients and the like with which the hydrogels can be loaded can vary within wide limits. The concentration of active substances, active substances, ingredients and the like contained in the hydrogel particles is usually 0.001 to 10% by weight, in particular 0.001 to 5% by weight, particularly preferably 0.001 to 1% by weight, based on the total weight of the hydrogel particles.

The loading of the hydrogel particles with the active ingredients, active ingredients, ingredients and the like has the advantage over the use of the "free" or pure active ingredients, active ingredients, ingredients and the like that in order to achieve a certain effect (e.g. antibacterial or deodorant properties, UV protection, color refreshment, coloring, etc.) lower concentrations of active substances, active substances, ingredients and the like have to be used or, for a given concentration of active substances, active substances, ingredients and the like, a stronger effect is produced than in the case of pure active substances, active substances, Ingredients and the like.

Suitable active substances, active substances, ingredients and the like, with which the hydrogel particles can be loaded, are, depending on the application, any active substances, active substances, ingredients and the like, provided that they are compatible with the hydrogel particles. Examples of active substances, active substances, ingredients and the like suitable according to the invention with which the hydrogel particles can be loaded are, for. B. deodorants (deodorants), UV light filters and UV absorbers and coloring substances.

To achieve or reinforce a deodorizing effect, for example, the hydrogel particles can be loaded with deodorizing agents (deodorants), ie in this case the hydrogel particles simultaneously represent depot systems represents which contain deodorant substances which can be released in a diffusion-controlled manner by swelling of the hydrogels. However, the hydrogel systems loaded with deodorants are also able to absorb unpleasant odors when not swollen. In this case, the treatment according to the invention results in textiles which are additionally provided with deodorizing properties. According to the invention, the term “deodorants” or “deodorants” is understood to mean agents which mask, remove or destroy odors, ie in the sense of the present invention this term is understood very broadly. For further details on deodorants, reference can be made, for example, to W. Raab, "Care Cosmetics: A Guide", Gustav Fischer Verlag, 2nd edition, 1997, in particular pages 33 ff., H. Fey, "Dictionary of Cosmetics", Scientific Publishing Company, 2nd edition, 1985, in particular pages 61 ff., And Römpp chemistry lexicon, Georg Thieme Verlag, 10th edition, keywords "deodorants", "odor improvers" and "antihidrotics", the entire disclosure of which is hereby incorporated by reference. Deodorants suitable according to the invention are preferably compatible with the skin. Furthermore, the deodorizing agent incorporated into the hydrogel matrices should be water-soluble or at least water-dispersible. Deodorants are particularly preferred, the molecules of which can diffuse through the pores of the hydrogel in the swollen state. According to the invention, preference is given to those deodorants (deodorants) which have a germ-inhibiting, in particular bacteriostatic action, in particular against Gram-positive bacteria. Suitable deodorants according to the invention are all preservatives with a specific bacteriostatic action against Gram-positive bacteria which are approved in body care products according to the Cosmetics Regulation of 16.12.1977 including the Amendment Regulation of 21.3.1988. Suitable according to the invention is, for. B. the antibacterial polymer chitosan and its derivatives, especially if the molecular weight of the chitosan or its derivatives allows diffusion through the pores of the hydrogel in the swollen state. Examples include chitosan and chitosan derivatives with molecular weights of less than about 100,000 g / mol. Further deodorants (deodorants) suitable according to the invention are selected from the group of triclosan, trichlorocarbanilide, bronopol, chlorhexidines and their salts, chloro- and dichloroxylenols, hexachlorophenes, tetrabromo-ortho-cresol, usnic acids and their salts, quats and amphoteric surfactants of the betaine type and mixtures of these compounds. Another deodorizing agent (deodorant) which is particularly suitable according to the invention is zinc ricinoleate, in particular in combination with synergistic additives which can form inclusion compounds with the odor-forming substances and are therefore particularly suitable for the absorption of unpleasant odors. Further deodorizing agents (deodorant) which are suitable according to the invention are citric acid esters such as triethyl citrate, in particular in combination with antioxidants. Further deodorizing agents (deodorants) which are suitable according to the invention are so-called odor improvers (odor masking agents) and antihidrotics (sweat prevention agents).

If, for example, the textiles to be treated are to be protected against ultraviolet radiation (UV protection), the hydrogel particles can be loaded with UV light filters and / or UV absorbers. According to the invention, a “UV light filter” - also known synonymously as “UV radiation filter”, “UV protective filter” or “UV filter” - is understood in particular to mean substances or mixtures of substances which at least partially absorb incident UV radiation in accordance with their absorption spectrum and / or reflect. According to the invention, “UV absorbers” are understood to mean in particular substances or substance mixtures or compounds with a pronounced absorption capacity for ultraviolet radiation. In this way, the textiles treated according to the invention can be provided with a temporary protection against ultraviolet radiation, protection of the textiles from photochemical aging and / or color fading being provided, so that not only UV protection for the wearer of the textiles, but also for the Textiles itself is provided. Suitable UV light filters or UV absorbers which can be used according to the invention are all UV light filters and / or UV absorbers available on the market. B. water-soluble, water-insoluble or water-dispersible, hydrophilic, hydrophobic or amphiphilic UV light filter or UV absorber etc. According to the invention, the UV light filter or UV absorber can in particular be selected from the group of UV absorbers and / or UV radiation filters of the stilbene type; Benzophenones and benzophenone derivatives, such as, in particular, benzophenone-3 and benzophenone-4, and sulfonic acid derivatives of benzophenones, in particular 2,2'-dihydroxy-4,4'-dimethoxybenzophenone-5,5'-bis (sodium sulfonate); Methylene-bis-benzotriazolyltetramethylbutylphenol; Sulfonic acid derivatives of benzimidazoles, in particular 2-phenylbenzimidazole-5-sulfonic acid; Bisoctyltriazol; Camphor derivatives such as sulfonic acid derivatives of 3-benzylidene camphor, terephthalic dicamphor sulfonic acid and its salts and trimonium benzylidene camphor sulfate; Hydroxynaphthochinonen; Phenylbenzoxazoles and benzimidazoles; Digalloyltrioleaten; phenyl-substituted acrylic acids, especially cinnamic acids and their salts, esters and derivatives as well as 2-cyano-3,3-diphenylacrylate ethylhexyl; Aminobenzoic acids and their salts, esters and derivatives such as p-aminobenzoic acid and their esters; Salicylic acids and their salts, esters and derivatives; Urocan (in) acid and its salts, esters and derivatives; butylmethoxydibenzoylmethane; Benzalazin; Natural substances such as mink, avocado, almond, sesame, peanut, olive, safflower and coconut oils and their extracts; very fine particulate inorganic oxide particles such as TiO ₂ , Al ₂ O ₃ and / or ZnO; and mixtures of the aforementioned compounds.

If, for example, you want to color the textiles to be treated or if you want to refresh or intensify the color in the case of colored or non-white textiles, the hydrogel particles can be loaded with coloring substances. Coloring substances which can be used according to the invention are all the usual coloring substances or those which are available on the market, in particular textile dyes. The coloring substance can in particular be selected from the group of inorganic and organic dyes and color pigments of all kinds, such as in particular direct dyes, reactive dyes and acid dyes, optionally in combination with inorganic and / or organic salts, in particular so-called coloring salts. The following are particularly suitable as coloring substances or dyes, in particular textile dyes, from the entirety of all dyes used for dyeing textiles: (i) direct dyes, such as, for example, B. anionic dyes (these are usually characterized by the fact that they build up directly on the fiber due to electrostatic interactions, van der Waals interactions, hydrogen bonds between the cellulose OH groups and the dye); (ii) reactive dyes, which can also have an anionic character and in particular can be composed of a coloring (dye) component and a reactive component (during treatment with dye-containing matrix or depot systems, the reactive component reacts with the functional groups of the fiber, e.g. B. hydroxyl groups in cellulose, amide groups in wool and polyamides etc., and forms covalent bonds); (iii) (color) pigments, which are usually embedded in the fiber and fixed with a binder; (iv) Acid dyes, which in particular on wool fibers, but also on casein and polyamide fibers from acid or neutral bath directly.

Upon reading the present description, the person skilled in the art will be familiar with further examples of active substances, active substances, ingredients, etc., with which the hydrogel particles can optionally be loaded without departing from the scope of the present invention.

The present invention also further relates to the textiles which have been treated in accordance with the process according to the invention. These are all types of textiles, preferably synthetic textiles, in particular textile clothing, on the surface, in particular fibers, of dimensionally stable hydrogel particles based on hydrophilic but water-insoluble, synthetic or natural, as three-dimensional networks of polymers with average particle diameters in the swollen state of less than 100 μm, in particular less than 10 μm, preferably less than about 1,000 nm, very particularly preferably less than 500 nm, are applied. The textiles treated by the process according to the invention, in particular synthetic textiles, have, inter alia, an increased water absorption capacity. The present invention also relates to the use of hydrogels, in particular micro- and nanoscale hydrogels, optionally in a cationically modified form, for temporarily furnishing textiles, preferably synthetic textiles, in particular textile clothing. The use according to the invention leads to an increase in the water absorption capacity (water absorption capacity) of the textiles treated in this way and thus generally also to an increase in the wearing comfort.

The present invention furthermore relates to the use of hydrogels, in particular micro- and nanoscale hydrogels, optionally in a cationically modified form, as a matrix system for water absorption on textiles, preferably synthetic textiles, in particular textile clothing. The water absorption takes place with swelling of the hydrogels.

The present invention furthermore relates to the use of hydrogels, in particular micro- and nanoscale hydrogels, optionally in cationically modified form, in particular in the form of aqueous dispersions, in detergents and / or cleaning agents, such as laundry aftertreatment agents, in particular fabric softeners, laundry sprays or ironing aids, and the washing and / or detergents containing these hydrogels themselves.

Compared to the known prior art, the present invention has a number of advantages: To improve the wearing comfort, in particular the water absorption capacity, only permanent equipment, e.g. B. used in the case of membrane textiles, these are relatively expensive to manufacture and as permanent equipment just not removable; Due to the use of hydrogels, the present invention for the first time makes it possible to provide a temporary textile finish to increase the wearing comfort or the water or moisture absorption capacity of textiles, in particular synthetic textiles, preferably textile clothing. To date, no method has been described in the prior art for the water absorption, in particular of synthetic textiles, to be carried out in a relatively simple manner, for example during a washing and cleaning step or in a subsequent post-treatment step; this is of particular interest, however, if only a temporary modification of the textile surfaces is to be achieved, which is simply to be applied subsequently and removed from the textile during the next washing and cleaning process. Compared to the classic hydrophilization of synthetic textile fibers by means of hydrophilic monomers, oligomers or polymers, an increased water absorption capacity is made possible by swelling of the hydrogel particles on the fiber. According to the invention, only relatively low concentrations of hydrogel dispersion are required for temporarily finishing the textiles. Furthermore, specific properties of the treated textiles can be achieved or modified by targeted loading of the hydrogels with active substances, active substances, ingredients and the like.

Further configurations and variations of the present invention are readily recognizable and realizable for the person skilled in the art on reading the description, without thereby leaving the scope of the present invention.

The present invention is illustrated by means of the following exemplary embodiments, which, however, in no way limit the invention.

WORKING EXAMPLES

PART A: TREATING TEXTILES WITH DISPERSIONS OF

HYDROGELS

The following Examples 1 to 5 reproduced under PART A relate to the treatment of textiles with dispersions of hydrogels which are not loaded with active substances

Example 1: Preparation of an aqueous polyisopropylacrylamide hydrogel

Dispersion ((P-NIPAAm) hydrogel) In a 1 liter four-necked flask, 470 ml demineralized water (fully demineralized water), 7 g N-isopropylacrylamide, 0.35 g N, N-methylenebisacrylamide and 0.094 g sodium dodecyl sulfate are weighed in and under N2 atmosphere and reflux heated to 70 ° C. at 200 rpm. After 30 minutes, 0.28 g of potassium peroxydisulfate in 30 ml of demineralized water are added, and the reaction is ended after a further 4 hours.

The hydrogel particles thus synthesized have a diameter of approx. 200 to 300 nm in the swollen state at room temperature, i.e. H. in the state of dispersion. The N-isopropylacrylamide is no longer detectable in the dispersion by means of HPLC (<1ppm).

Example 2: Application of the hydrogel dispersion from example 1 to textiles The application of the hydrogel dispersion prepared according to example 1 takes place in a standardized manner over a period of 24 hours. In a later application, application times of less than 10 minutes or spray application are preferred in order to apply a sufficient amount of hydrogel particles to the textile surface.

Test fabrics made of cotton, polyester and a mixed fabric made of cotton / polyester with defined dimensions of 8 x 2 cm are used. These are hung for 24 hours in a lightly stirred dispersion which is thermostatted at 20 ° C. and has a solids content of 15 g / l. After application of the hydrogels the samples are first dried in air at room temperature and then dried in a desiccator to carry out the tensiometric measurements exactly. The pulling behavior of the hydrogel matrices varies depending on the textile fibers used. When using a hydrogel dispersion with a concentration of 15 g / l, 0.6 mg / cm2 hydrogel on cotton, 1 mg / cm2 hydrogel on polyester and 0.4 mg / cm ^ hydrogel on the mixed fabric.

Example 3 Moisture Absorption of the Textiles Treated in Example 2 The water absorption capacity of the textile fabrics treated in this way is determined by means of tensiometric measurements. The water absorption is determined over a period of 130 seconds. During this period, an absolute water absorption of 0.38 g is achieved for the treated cotton and 0.8 g for the treated polyester, while the untreated polyester sample does not absorb any water. The treated blended fabric shows a water absorption of 0.3 g.

With a 10-minute application by immersing the textile strips in a hydrogel dispersion with a solids content of 1 g / l, water absorption of 0.7 g after 130 seconds is achieved with polyester. This value is also achieved if the solids content of the hydrogel dispersion from Example 1 is reduced to 0.2 g / l.

If the hydrogel dispersion (1 g / l) in combination with fabric softener (2 ml / l) is applied by immersing the textile strips in the corresponding solution, high values (0.6 g / l) for polyester are used for the water absorption capacity while improving the "Griffs" ("Soft Feeling") achieved.

The improved water absorption of polyester fabric was also visualized using a high-speed camera, which can be used to track the sinking rate of a single drop of water. On untreated polyester, the water drop is still visible on the textile surface even after 60 seconds, while in the case of the polyester fabric treated with the hydrogel dispersion, it is already completely absorbed by the textile after 4 seconds. EXAMPLE 4 Preparation of an Aqueous Cationically Modified Polyisopropylacrylamide Hydrogel Dispersion ((P-NIPAAm) Hydrogel) 990 ml of demineralized water (demineralized water), 13.89 g of N-isopropylacrylamide are placed in a 2 liter four-necked flask. Weighed 0.102 g of 2-aminoethyl methacrylate hydrochloride, 0.7 g of N, N-methylenebisacrylamide and 0.188 g of sodium dodecyl sulfate and heated to 70 ° C. under an N2 atmosphere and reflux at 200 rpm. After 30 minutes, 0.56 g of potassium peroxydisulfate in 10 ml of demineralized water are added, and the reaction is ended after a further 4 hours.

Example 5: Comparison of the moisture absorption of textiles treated according to Example 2 with a P-NIPAAm dispersion (Example 1) and a cationically modified polyisopropylacrylamide dispersion. The water absorption capacity is determined analogously to Example 3 by means of tensiometric measurements. Hydrogel dispersions with a concentration of 0.2 g / l, 0.1 g / l and 0.05 g / l are compared.

In the case of a 10-minute application by immersing the textile strips in the corresponding hydrogel dispersion with a solids content of 0.2 g / l, after an immersion time of 130 seconds, the 3 fabric types - cotton, polyester and satin - have identical values of 0.39 g for cotton 0.7 g for polyester and 0.24 g for satin.

When using a hydrogel dispersion of 0.1 g / l, the cationically modified P-NIPAAm hydrogels achieve 0.7 g in polyester, while the R-NIPAAm hydrogel dispersion only reaches values of 0.3 g. With a concentration of hydrogels of 0.05 g / l, 0.3 g are still achieved for the cationically modified P-NIPAAm hydrogel on polyester and 0.1 g for the P-NIPAAm hydrogel.

PART B: TREATMENT OF TEXTILES WITH DISPERSIONS OF WITH

DESODORANT-LOADED HYDROGELS

The following Examples 1 to 7, reproduced under PART B, relate to the treatment of textiles with dispersions of hydrogels which are loaded with deodorants Example 1: Preparation of hydrogel matrices using the example of polyisopropyl acrylamide (P-NIPAAm) 470 ml of demineralized water (fully demineralized water), 7 g of N-isopropylacrylamide, 0.35 g of N, N-methylenebisacrylamide are placed in a 1 liter four-necked flask and 0.094 g of sodium dodecyl sulfate were weighed in and heated to 70 ° C. under an N2 atmosphere and under reflux at 200 rpm. After 30 minutes, 0.28 g of potassium peroxydisulfate in 30 ml of demineralized water are added. The reaction is complete after a further 4 hours. The aqueous hydrogel dispersion is then dialyzed. The hydrogel particles thus synthesized have a diameter of approx. 200 to 300 nm at room temperature in the swollen state, ie in an aqueous dispersion. N-isopropylacrylamide is no longer detectable in the dispersion by means of HPLC (<1ppm).

Example 2: Immobilization of Deodorants in Hydrogel Matrices The hydrogel dispersion prepared according to Example 1 is concentrated in a suitable manner (centrifugation, evaporation of the water in the drying cabinet) to a solids content of about 7 to 8% (w / w) and in a the active ingredient (z An antibacterial chitosan, chitosan oligomers or special derivatives) containing aqueous solution over a period of 24 hours. The active ingredient is distributed evenly in the hydrogel matrices and the solution by diffusion.

Alternatively, the hydrogel matrices can also be dried by spray drying or freeze drying and then added to the aqueous active ingredient solution for swelling.

Example 3: Application of the hydrogel dispersion on textiles

The hydrogel dispersion prepared according to Example 1 or 2 is applied in a standardized manner by immersion in the hydrogel dispersion within a

Period of 10 minutes or by spray.

The application by immersing the textile strip in the active ingredient solution enables application and dosage comparable to the use of a

Softener. When applying the hydrogel dispersion, test fabrics made of cotton, polyester and a mixed fabric made of cotton / polyester with defined dimensions of 8 x 2 cm are used. These are hung for 10 minutes in a lightly stirred, thermostated dispersion at 20 ° C. with a solids content of 1 g / l. After the application of the hydrogels, the samples are first dried in air at room temperature and then dried in a desiccator to carry out the tensiometric measurements.

Example 4: Moisture absorption of the treated textiles from Example 3 The water absorption capacity of the textile fabrics treated in this way is determined by means of tensiometric measurements. The water absorption is determined over a period of 130 seconds. An absolute water absorption of 0.38 g is achieved for cotton after a 10-minute application period, 0.3 g for mixed fabrics (cotton / polyester) and 0.7 g for polyester, while the untreated polyester sample does not absorb water. If the hydrogel dispersion (1 g / l) in combination with fabric softener (2 ml / l) is applied by immersing the textile strips in the corresponding solution, high values for the water absorption capacity are achieved while improving the so-called "feel" ("soft feeling"). achieved.

Textile clothing treated according to the method according to the invention has a sweat odor-preventing, deodorising effect.

EXAMPLE 5 Immobilization of Zinc Ricinoleate in P-NIPAAm Hydrogels The hydrogel dispersion obtained according to Example 1 is freeze-dried and then left to swell in an aqueous zinc ricinoleate solution. For this purpose, 1.8 g of freeze-dried P-NIPAAm in 7.2 g of zinc ricinoleate solution (0.4 g of zinc ricinoleate (50%) in 6.8 g of deionized water) are left to swell overnight. Before being used as a post-treatment agent in the post-rinse cycle of a washing machine, 9 g of the gel are diluted with 31 g of demineralized water and stirred for 2 hours until a homogeneous dispersion has formed. The hydrogel dispersions thus produced contain 4.5% (w / w) P-NIPAAm hydrogel particles (based on the solid), 0.5% (w / w) zinc ricinoleate and 95% (w / w) deionized water. Example 6: Application of the hydrogel dispersion to textiles 40 g of the hydrogel dispersion prepared according to Example 5 and loaded with zinc ricinoleate are metered in analogously to a fabric softener via the induction chamber for rinsing in a Miele ^® washing machine. The washing machine is loaded with 5 fabric samples (SO knitted fabric, CO terry cloth, PA knitted fabric, PES knitted fabric and WO) as well as 1.8 kg terry towels. 125 g of a UWM detergent (powder) are used as detergents for the main wash cycle.

Example 7: Tests for the Deodorizing Effect of the Textiles Treated with the Hydrogel Dispersion The stinking of the test fabrics treated in this way and untreated test fabrics as a reference takes place over a period of 30 minutes in a tightly closed barrel with about 50 smoked cigarette butts.

The scent assessment of the soaked tissue samples is carried out via a test pendulum consisting of 5 people after 1 hour. The intensity of the fragrance is characterized by the following grades: Grade 0: no smell, neutral, odorless Grade 1: weak smell, low intensity Grade 2: distinct smell, tolerable Grade 3: strong smell, annoying Grade 4: very strong smell, unbearable

Odor intensity Reference Test fabric treated with hydrogel and zinc ricinoleate after 1 hour

PES 0.6 0.3

PA 1.0 0.3

CO knitted fabric 3.0 1.9

WO 1, 6 0.3

CO Terrycloth 3.3 0.2

In comparison to the references, the textiles treated with hydrogel and containing 0.5% (w / w) zinc ricinoleate as deodorant are used by the test persons rated significantly more positive. Four out of five test fabrics are judged to be almost odorless.

PART C: TREATMENT OF TEXTILES WITH DISPERSIONS OF WITH

UV-ABSORBED HYDROGELS

The following Examples 1 to 5 reproduced under PART C relate to the treatment of textiles with dispersions of hydrogels which are loaded with UV absorbers

Example 1: Preparation of the PN-IPAAm hydrogel dispersion 470 ml of fully demineralized water (DI water), 7 g of N-isopropylacrylamide, 0.35 g of N, N-methylenebisacrylamide and 0.094 g of sodium dodecyl sulfate were weighed into a 1 liter four-necked flask and heated to 70 ° C under N ₂ atmosphere and reflux with stirring at 200 rpm. After 30 minutes, 0.28 g of potassium peroxydisulfate in 30 ml of demineralized water was added, and the reaction was terminated after a further 4 hours.

The hydrogel particles synthesized in this way have a diameter of approximately 200 to 300 nm at room temperature.

Example 2: Preparation of the EMA-VP hydrogel dispersion 480 ml of deionized water, 4.1 g of ethyl methacrylate, 15.9 g of N-vinylpyrrolidone, 5.4 g of alkylaryl polyglycol ether sulfate sodium salt (1%) and 1 g were placed in a 2 l four-necked flask Weighed in N, N-methylenebisacrylamide and heated to 70.degree. C. under an N ₂ atmosphere and reflux with stirring at 200 rpm. After 30 minutes, 0.8 g of potassium peroxydisulfate in 30 ml of demineralized water was added, and the reaction was ended after a further 4 hours. The aqueous hydrogel dispersion was then dialyzed.

The hydrogel particles synthesized in this way have a diameter of approximately 100 to 300 nm at room temperature. Particle sizes of up to 500 nm were achieved by varying the synthesis conditions. Example 3: Immobilization of UV absorbers in hydrogel matrices The hydrogel dispersion prepared according to Example 1 or 2 was concentrated in a suitable manner (centrifugation, freeze-drying). The freeze-dried crosslinked polymer was mixed with a 0.004% and a 0.04% UV absorber solution and left to swell overnight. Diffusion ensures that the UV absorber is evenly distributed in the hydrogel matrices and in the solution. Alternatively, the active ingredient can be added directly, ie undiluted, into the hydrogel dispersion. As UV absorbers were the following commercially available substances are used: Tinosorb M ^®, FR (CIBA), Uvinul ^® 3048, Eu Solex ^® 232 (Merck).

Example 4: Application of the hydrogel dispersion on textiles The application of the hydrogel dispersions prepared according to Examples 1 and 2 (reference) and of the hydrogel dispersions prepared according to Example 3 (using a UV filter) was carried out in a standardized manner using a dipping process. The application times were less than 20 minutes, preferably less than 10 minutes. As an alternative to immersion, spray application is also suitable to apply a sufficient amount of hydrogel particles to the textile surface.

Test fabrics made of cotton (BW) and polyester were used. These were hung or immersed for 10 minutes in a lightly stirred dispersion thermostated at 20 ° C. with a solids content below 15 g / l, preferably 0.2 g / l.

After the application of the hydrogels, the samples were air-dried at ambient temperature.

The pulling behavior of the hydrogel matrices varies depending on the textile fibers used. Thus, when using a hydrogel dispersion with a concentration of 15 g / l, 0.6 mg / cm ² hydrogel on cotton, 1 mg / cm ² hydrogel on polyester and 0.4 mg / cm ² hydrogel on mixed fabrics. The hydrogels loaded with UV absorbers can be dosed alone (preferably 40 g of a 4% hydrogel dispersion per rinse cycle) or in combination with fabric softener in the washing-up chamber of a normal washing machine. 125 g of an ordinary UWM, color or mild detergent were used as detergent for the main wash cycle. Example 5: Determination of UV protection

Cotton fabrics were prepared with the hydrogel dispersions prepared according to Examples 2 and 3, as shown in Example 4 above, by immersing them in the hydrogel dispersions for ten minutes and air-dried. The hydrogel was used in both nano and microscale. The concentration of the hydrogel in the solution was 0.2 g / l. Tinosorb ^® M (methylene-bis-benzotriazolyl-tetramethylbutylphenol) was used as the UV filter. The UV filter concentration in the example presented was 0.004% or 0.04% in the solution.

The UV protection (SPF value) of the untreated cotton fabric was determined against cotton fabric treated with pure Tinosorb ^® solution and against cotton fabric treated with hydrogel / Tinosorb ^® solution at two different concentrations.

The UV protection was determined in vitro by transmission measurement with a device of the type ^® Labsphere UV-1000S UV Transmittance Analyzer. The following results (SPF) were determined:

• Colipa Standard High (vitro skin): 14.2

• Untreated cotton fabric (BW fabric): 13.0

BW fabric + hydrogel (without UV filter): 12.8

BW fabric + Tinosorb ^® M (0.004% solution): 11, 7

BW fabric + Tinosorb ^® M (0.04% solution): 10.9

• BW tissue + hydrogel, swollen in Tinosorb M ^® (0.004%) 16.4 (inventive system)

BW fabric + hydrogel, swollen in Tinosorb ^® M (0.04%): 22.0 (system according to the invention)

It is thus observed that the tissues treated by hydrogel particles loaded with UV absorbers, with the same concentration of UV protective filter, have a considerably higher UV protection (SPF value) than those with the pure UV protective filter in the form of a solution, ie UV Protective filter without depot system, treated tissue. PART D: TREATMENT OF TEXTILES WITH DISPERSIONS OF WITH

DYES LOADED HYDROGELS

The following Examples 1 to 5 reproduced under PART D relate to the treatment of textiles with dispersions of hydrogels which are loaded with dyes

Example 1: Preparation of an aqueous PN-IPAAm hydrogel dispersion 470 ml of deionized water (fully demineralized water), 7 g of N-isopropylacrylamide, 0.35 g of N, N-methylenebisacrylamide and 0.094 g of sodium dodecyl sulfate are placed in a 1 liter four-necked flask weighed, and heated to 70 ° C. under N ₂ atmosphere and reflux at 200 rpm. After 30 minutes, 0.28 g of potassium peroxydisulfate in 30 ml of demineralized water are added, and the reaction is ended after a further 4 hours.

Example 2: Preparation of an aqueous EMA-VP hydrogel dispersion

480 ml of deionized water, 4.1 g of ethyl methacrylate,

15.9 g of N-vinylpyrrolidone, 5.4 g of alkylarylpolyglycol ether sulfate sodium salt (1%) and 1 g of N, N-methylenebisacrylamide and weighed in under an N ₂ atmosphere and

Reflux heated to 70 ° C at 200 rpm. After 30 minutes, 0.8 g

Potassium peroxydisulfate in 30 ml deionized water is added, after another 4

Hours the reaction ended. The aqueous hydrogel dispersion is then dialyzed.

The hydrogel particles thus synthesized have one at room temperature

Diameters from approx. 100 to 300 nm. By varying the synthesis conditions, particle sizes up to 500 nm can be achieved.

Example 3: Immobilization of dyes in hydrogel matrices

The hydrogel dispersion prepared according to Example 1 is suitable

(Centrifugation, freeze drying) concentrated. The freeze-dried PN IPAAm is mixed with a 2% dye solution in a ratio of 1: 4 and left to swell overnight. The dye is uniformly distributed in the hydrogel matrices and in the solution by diffusion. It is also possible to add the active ingredient directly to the hydrogel dispersion. Simplicol ^® textile dye 12601 black (Brauns / Heitmann), Basacid ^® black (anionic 3-component acid dye, BASF) and Remazol ^® black (reactive dye, Dye Star) with and without the addition of NaCI and Na ₂ SO _{4 were} used as dyes ( see example 5).

Example 4: Application of the hydrogel dispersion on textiles The application of the hydrogel dispersion prepared according to Example 1 (reference) and Example 3 (with dye) is carried out in a standardized manner by means of a dipping process. The application times are less than 20 minutes, preferably less than 10 minutes; spray application is also suitable for applying a sufficient amount of hydrogel particles to the textile surface. Test fabrics made of cotton, polyester and satin with defined dimensions of 8 x 2 cm are used. These are hung for 10 minutes in a lightly stirred dispersion thermostated at 20 ° C. with a solids content of 15 g / 1, preferably 0.2 g / 1. After application of the hydrogels, the samples are first dried in air at ambient temperature in order to carry out the tensiometric measurements exactly in the desiccator.

The pulling behavior of the PN-IPAAm hydrogel matrices varies depending on the textile fibers used. So when using a PN-IPAAm hydrogel dispersion with a concentration of 15 g / l on cotton 0.6 mg / cm ² hydrogel, on polyester 1 mg / cm ² and on mixed fabrics 0.4 mg / cm ² PN- IPAAm hydrogels.

The hydrogels loaded with dye can be dosed alone (preferably 40 g of a 4% hydrogel dispersion per rinse cycle) or in combination with fabric softener in the wash-in chamber of an ordinary washing machine. 125 g of an ordinary UWM, color or mild detergent are used as detergents for the main wash cycle. Example 5: Tests for the coloring effect of hydrogel dispersions with different dyes Three different types of fabric (cotton, PES, satin) were prepared with the hydrogel dispersions prepared according to Examples 1 and 3, as shown in Example 4 above, by immersion for 10 minutes and dried in air. The hydrogel has been used in both nano and microscale. The dye concentration was 0.008% in solution in all cases. The salt concentration can be used in the range from 0.01% to 20% and is 10%, preferably 5%. Overall, better results were obtained with NaCI than with Na ₂ SO ₄ . The coloring effect was subsequently determined. Hydrogel dispersions without dye and the sole use of the dye served as reference.

The intensity of the dye was characterized according to the following scheme: o grade 1 excellent color effects o grade 2 good color effects o grade 3 medium color effects o grade 4 weak color effects o grade 5 no effect

The results can be summarized as follows:

1. Cotton

The concentration of PN-IPAAm was 0.2 g / l in each case. If the dyes were applied to the cotton fabric without hydrogel, the dyeing results from the test panel were rated 5 for Simplicol ^® and Basacid ^® and 4 for Remazol ^® . In connection with the hydrogel, the dye Basacid reached the mark 3.5. After using the Hydrogel-Simplicol ^® -NaCI system, the test textiles were rated 4.2.

2. PES

After using the Simplicol ^® dye alone, a rating of 4 was achieved. If you put this dye in combination with Hydrogel and NaCI, the result of the coloring performance could be rated with a grade of 2. An improvement in the color appearance could also be achieved with the Basacid ^® dye. If the simple treatment of textiles is rated with the poor success of 4.5, an improvement to the grade 2.5 can be achieved by using the combination of dye and hydrogel (and optionally NaCI).

3. Satin

The use of hydrogels containing Basacid ^{® was} particularly effective for satin fabrics. If the reference sample of the pure dye was graded with only 4.5, tissue samples treated with hydrogel and Basacid ^® dye could be graded with 2.5. An increase in the rating of 3 (Reference pure dyestuff) on 2 could be achieved for satin samples containing with Simplicol ^® PN-IPAAm were treated.

Claims

claims:

1. A method for in particular temporary finishing of textiles, in particular synthetic textiles, characterized in that a hydrogel is applied to the textile surface, in particular the fibers of the textiles.

2. The method according to claim 1, characterized in that the textiles treated in this way are subsequently dried, in particular wherein the drying can preferably take place under normal pressure and at ambient temperature or higher temperatures.

3. The method according to claim 1 or 2, characterized in that the hydrogel is a water-containing gel based on hydrophilic, but water-insoluble polymers, which are present as three-dimensional networks.

4. The method according to any one of claims 1 to 3, characterized in that the hydrogel is a synthetic hydrogel, the synthetic hydrogel being poly (meth) acrylic acids, poly (meth) acrylates, poly (meth) acrylamides, polyurethanes, polyvinylpyrrolidones , Polyvinyl alcohols, polyvinyl acetates or their copolymers and derivatives and mixtures thereof can be derived.

5. The method according to any one of claims 1 to 3, characterized in that the hydrogel is a hydrogel based on natural polymers, wherein the natural polymer can be selected from the group of polysaccharides such as modified starch and starch derivatives, dextrins, agaroses, Agar-agar, curdlan, alginic acid and alginates, chitosans, polypeptides such as gelatin, pectins and pectinates, carageenans as well as celluloses and cellulose derivatives such as carboxymethyl cellulose, cellulose acetate, cellulose acetate butyrate and alkyl celluloses and mixtures thereof.

6. The method according to any one of claims 1 to 5, characterized in that the hydrogel particles with average particle diameters in the swollen state of less than 100 microns, in particular less than 10 microns, preferably less than about 1,000 nm, very particularly preferably less than 500 nm , includes.

7. The method according to any one of claims 1 to 6, characterized in that the hydrogel consists of dimensionally stable particles.

8. The method according to any one of claims 1 to 7, characterized in that the hydrogel is applied in the form of an aqueous dispersion, in particular wherein the hydrogel during application to textiles in a concentration less than about 15 g / l, in particular less than about 10 g / l, preferably less than about 3 g / l, very particularly preferably less than about 1 g / l, is present, based on the polymer content (dry weight) of the dispersion.

9. The method according to claim 8, characterized in that the aqueous hydrogel dispersion is applied by spraying onto the textile fibers or by immersing the textiles in the dispersion.

10. The method according to claims e or 9, characterized in that the treatment takes place in a washing machine, in particular in the rinse cycle, if appropriate in combination with a fabric softener.

11. The method according to any one of claims 1 to 10, characterized in that the hydrogel is skin-friendly.

12. The method according to any one of claims 1 to 11, characterized in that the hydrogel particles are cationically modified.

13. The method according to any one of claims 1 to 12, characterized in that the hydrogel particles with at least one active ingredient, active ingredient or Ingredient loaded, especially in amounts of 0.001 to 10 wt .-%, preferably 0.001 to 5 wt .-%, particularly preferably 0.001 to 1 wt .-%, based on the total weight of the hydrogel particles.

14. The method according to claim 13, characterized in that the active ingredient, active ingredient or ingredient is selected from the group of deodorants (deodorants), UV light filters and UV absorbers, and coloring substances, especially dyes, and mixtures thereof.

15. The method according to any one of claims 1 to 14 for use on textile fabrics, in particular woven goods such as fabrics, knitwear such as knitted fabrics and knitted fabrics or textile composites such as felt and nonwovens.

16. The method according to any one of claims 1 to 15 to increase the water absorption capacity (water absorption capacity) of textiles and / or to increase the wearing comfort of textiles.

17. The method according to any one of claims 1 to 16 for the treatment of synthetic textiles, wherein the synthetic textiles are made of elastane (EL), elastodiene (ED), fluoro (PTFE), polyacrylic (PAN), modacrylic (MAC), polyamide (PA ), Aramid (AR), polyvinyl chloride (CLF), polyvinylidene chloride (CLF), polyester (PES), polyethylene (PE), polypropylene (PP), polyvinyl alcohol (PVAI), acetate (CA) or triacetate (CTA) or mixtures thereof can, or for the treatment of mixed textiles based on synthetic and natural textile fibers.

18. The method according to any one of claims 1 to 17 for the treatment of textile clothing.

19. The method according to any one of claims 1 to 18 for modifying textiles, in particular synthetic textiles, preferably textile clothing, especially for equipment with increased water absorption capacity (water absorption capacity).

20. The method according to any one of claims 1 to 19 for the production of textiles, in particular synthetic textiles, preferably textile clothing, with increased wearing comfort.

21. Textiles, in particular synthetic textiles, in particular textile clothing, treated according to the method of claims 1 to 20.

22. Textiles, preferably synthetic textiles, in particular textile clothing, on the surface, in particular fibers, of dimensionally stable hydrogel particles based on hydrophilic but water-insoluble, synthetic or natural polymers in the form of three-dimensional networks with average particle diameters in the swollen state of less than 100 μm, in particular less than 10 μm, preferably less than about 1,000 nm, very particularly preferably less than 500 nm, are applied.

23. Textiles according to claim 22, characterized in that the hydrogel particles are loaded with at least one active substance, active substance or ingredient, in particular in amounts of 0.001 to 10% by weight, preferably 0.001 to 5% by weight, particularly preferably 0.001 to 1 % By weight, based on the total weight of the hydrogel particles, in particular where the active ingredient, active ingredient or ingredient can be selected from the group of deodorants (deodorants), UV light filters and UV absorbers, and coloring substances, in particular dyes, and mixtures thereof ,

24. Use of hydrogels, in particular micro- and nanoscale hydrogels, optionally in a cationically modified form, for the temporary finishing of textiles, preferably synthetic textiles, in particular textile clothing.

25. Use according to claim 24 for increasing the water absorption capacity (water absorption capacity) and / or for increasing the wearing comfort.

26. Use of hydrogels, in particular micro- and nanoscale hydrogels, optionally in cationically modified form, as a matrix system for water absorption on textiles, preferably synthetic textiles, in particular textile clothing, the water absorption taking place in particular with swelling of the hydrogels.

27. Use of hydrogels, in particular micro- and nanoscale hydrogels, optionally in cationically modified form, in particular in the form of aqueous dispersions, in washing and / or cleaning agents such as laundry aftertreatment agents, in particular fabric softeners, laundry sprays or ironing aids.

28. Use according to any one of claims 24 to 27, characterized in that the hydrogel particles are loaded with at least one active ingredient, active ingredient or ingredient, in particular in amounts of 0.001 to 10 wt .-%, preferably 0.001 to 5 wt .-%, particularly preferably 0.001 to 1% by weight, based on the total weight of the hydrogel particles, it being possible for the active ingredient, active ingredient or ingredient to be selected from the group of deodorants (deodorants), UV light filters and UV absorbers, and coloring substances, in particular dyes, as well as their mixtures.

29. Detergents and / or cleaning agents such as laundry aftertreatment agents, in particular fabric softeners, laundry sprays or ironing aids, containing hydrogels, in particular micro- and nanoscale hydrogels, optionally in cationically modified form, in particular in the form of aqueous dispersions.

0. washing and / or cleaning agent according to claim 29, characterized in that the hydrogel particles are loaded with at least one active ingredient, active ingredient or ingredient, in particular in amounts of 0.001 to 10 wt .-%, preferably 0.001 to 5 wt .-%, particularly preferably 0.001 to 1% by weight, based on the total weight of the hydrogel particles, it being possible for the active ingredient, active ingredient or ingredient to be selected from the group of deodorants (deodorants), UV light filters and UV absorbers, and coloring substances, in particular dyes , and their mixtures.