EP1135455B2 - Washing and cleaning agent additive and method of producing the same - Google Patents

Abstract

The invention relates to washing and cleaning agent additives that can be added to conventional washing and cleaning compositions. Said additives are obtained by applying a solution or suspension of certain washing and cleaning agent ingredients in binders that are liquid at temperatures up to 40 DEG C to carriers with oil absorption capacities of more than 20 g/100 g. Alternatively, a solid mixture consisting of a carrier material and certain washing and cleaning agent ingredients can be sprayed with the above-mentioned binders.

Description

The present invention relates to particulate additives for detergents and cleaners which contain so-called "minor components" such as, for example, dyes, enzymes, optical brighteners and the like.

Often arises in the production of detergents and cleaning agents, the problem that components must be incorporated, which are included only to a small percentage in the finished product. If such so-called "small components" are added to the washing and cleaning agent in the form of pure substances, the problem of segregation arises. In laundry detergents and cleaners prepared by spray-drying, small components (e.g., optical brighteners) are partially dissolved in liquid ingredients, such as nonionic surfactants, and then sprayed onto the tower powders in the form of the solution. Since spray-dried detergents and cleaners have large pore volumes, this procedure is easily possible here.

However, modern detergents and cleaners are increasingly being produced by granulation processes in order to achieve higher bulk densities and thus advantages in packaging, storage and transport. These products have a high degree of compaction and a greatly reduced pore volume. If liquids are sprayed onto such granules, the product is then very sticky.

In the older German patent application DE 198 01 186.5 (Henkel) is proposed for the preparation of dye compounds to process finely divided builder and dye (s) to a slurry and to subject this to spray drying. The dyed and spray-dried powder agents are then used for powdering and coloring detergents and cleaners. However, the process disclosed in this document does not circumvent the energy-intensive step of spray-drying. In addition, the spraying of colored solutions leads to a considerable cleaning effort in the systems used.

Subject of the European patent application EP 737 739 A2 (Procter & Gamble) is a process for producing coated dye particles. The resulting particles are characterized by a low binder content.

Particulate detergent compositions based on zeolite are the subject of the European application EP 521 635 A1 (Unilever ). As binders, these compositions contain only surfactants.

Zeolite-containing granules are also the subject of WO 96/34082 A1 (Procter & Gamble). These granules are produced by a multi-stage mixing process.

It is an object of the present invention to provide a small component compound which can be added directly to the finished washing and cleaning agent in the preparation of surfactant granules and exhibits no separation tendencies. Furthermore, a manufacturing method for such a small component compound should be provided, which is cost-effective, universally applicable and can be carried out without great expenditure on equipment with little cleaning effort.

The present invention is the use of detergent additives, which 40 to 98.9 wt .-% carrier material having an oil absorption capacity of at least 20g / 100g and a particle size less than 200 microns, 1 to 50 wt .-% of one or more at temperatures up to 40 ° C liquid binder, 0.1 to 40 wt .-% of a detergent and cleaning agent ingredient from the group of enzymes, pH adjusters, fluorescers, dyes, foam inhibitors, anti redeposition agents, optical brighteners, grayness inhibitors, dye transfer inhibitors and Corrosion inhibitors and mixtures thereof, as a powdering agent for coarse-grained detergent particles.
In a further aspect, the present invention relates to processes for the preparation of detergents and cleaners, characterized in that detergent particles are prepared with detergent additives which contain 40 to 98.9 wt .-% of carrier material with a Oil absorption capacity of at least 20g / 100g and a particle size smaller than 200μm, 1 to 50% by weight of one or more binders liquid at temperatures up to 40 ° C, 0.1 to 40% by weight of a washing and cleaning agent ingredient of Group of enzymes, pH adjusters, fluorescers, dyes, foam inhibitors, anti Redepositionsmittel, optical brightener, grayness inhibitors, dye transfer inhibitors and corrosion inhibitors and mixtures thereof are powdered.

The carrier material contained in the washing and cleaning agent additives according to the invention has an oil absorption capacity of at least 20 g / 100 g. Preferably, however, oil absorption components having a higher oil absorption capacity are used. Detergent and detergent additives are preferred in which the carrier material contained in them has an oil absorption capacity of at least 50 g / 100 g, preferably at least 80 g / 100 g, more preferably at least 120 g / 100 g and especially at least 140 g / 100 g.

The oil absorption capacity is a physical property of a substance that can be determined by standardized methods. For example, there are the British standard methods BS1795 and BS3483: Part B7: 1982, both of which refer to the ISO 787/5 standard. In the test methods, a well-balanced sample of the substance in question is placed on a plate and treated dropwise with refined linseed oil (density: 0.93 gcm ^-3 ) from a burette. After each addition, the powder is mixed thoroughly with the oil using a spatula, with the addition of oil continuing until a paste of smooth consistency is achieved. This paste should flow or run without crumbling. The oil absorption capacity is now the amount of dripped oil, based on 100g absorbent and is given in ml / 100g or g / 100g, where conversions on the Density of linseed oil are easily possible.

The oil absorption component preferably has the smallest possible average particle size, since the active surface increases with decreasing particle size. In the case of preferred washing and cleaning agent additives, all particles of the carrier material are smaller than 200 μm, preferably smaller than 100 μm, particularly preferably smaller than 75 μm and in particular smaller than 50 μm. It may be further advantageous in the context of the present invention if the support material is even finer, i. the component having an oil absorption capacity of at least 20 g / 100 g has an average particle size of less than 50 μm, preferably less than 20 μm and in particular less than 10 μm.

The carrier material is a variety of substances. There are a large number of both inorganic and organic substances which have a sufficiently large oil absorption capacity. By way of example, finely divided substances which are obtained by precipitation may be mentioned here. The substances used are, for example, silicates, aluminosilicates, calcium silicates, magnesium silicates and calcium carbonate. However, kieselguhr (diatomaceous earth) and finely divided cellulose fibers or derivatives thereof can also be used in the context of the present invention. Preferred washing and cleaning agent additives are characterized in that the carrier materials contained in them having an oil absorption capacity of at least 20 g / 100 g are selected from the group of silicates and / or aluminum silicates, in particular from the group of silicas and / or zeolites.

For example, finely divided zeolites are suitable here, but also fumed silicas (Aerosil®) or silicic acids which have been obtained by precipitation. In the context of the present invention, preferred washing and cleaning agent additives comprise the support material in amounts of from 50 to 95% by weight, preferably from 55 to 85% by weight and in particular from 60 to 80% by weight, based in each case on the additive.

As second components, the washing and cleaning agent additives contain from 1 to 50% by weight of one or more binders which are liquid at temperatures up to 40 ° C. The term "liquid binder" refers to the state of aggregation of the binder at temperatures up to 40 ° C and 1013 mbar. Substances which melt or soften only at relatively high temperatures or those which boil at temperatures up to 40 ° C. are therefore not usable in the context of the present invention.

In general, only the requirement profile is set for the binders according to the invention contained in the detergents and cleaning additives that they are liquid at 40 ° C (and atmospheric pressure). In particular, substances from the group of polyethylene glycols and polypropylene glycols, glycerol, 4-hydroxymethyl-1,3-dioxolan-2-one, ethylene glycol, propylene glycol and 4-methyl-1,3-dioxolane-2 have emerged from the multitude of usable binders. on and perfume oils proved to be suitable binders.

Polyethylene glycols which can be used according to the invention (abbreviated PEG) are polymers of ethylene glycol which correspond to general formula I

H- (O-CH ₂ -CH ₂ ) _n -OH (I)

n, where n can assume values between 1 (ethylene glycol, see below) and about 16. Decisive in the assessment of whether a polyethylene glycol is used according to the invention, is the state of matter of the PEG at room temperature, ie the solidification point of the PEG must be below 25 ° C. For polyethylene glycols there are various nomenclatures that can lead to confusion. Technically common is the indication of the average relative molecular weight following the indication "PEG", so that "PEG 200" characterizes a polyethylene glycol having a relative molecular weight of about 190 to about 210. According to this nomenclature, the commercially available polyethylene glycols PEG 200, PEG 300, PEG 400 and PEG 600 can be used in the context of the present invention.

For cosmetic ingredients, another nomenclature is used in which the abbreviation PEG is hyphenated and directly followed by the hyphen followed by a number corresponding to the number n in formula I above. According to this nomenclature (so-called INCI Nomenclature, CTFA International Cosmetic Ingredient Dictionary and Handbook, 5th Edition, The Cosmetic, Toiletry and Fragrance Association, Washington, 1997 ) According to the invention, for example, PEG-4, PEG-6, PEG-8, PEG-9, PEG-10, PEG-12, PEG-14 and PEG-16 can be used according to the invention.

Commercially available are polyethylene glycols, for example, under the trade names Carbowax® PEG 200 (Union Carbide), Emkapol® 200 (ICI Americas), Lipoxol® 200 MED (HUBS America), Polyglycol® E-200 (Dow Chemical), Alkapol® PEG 300 (Rhone -Poulenc), Lutrol® E300 (BASF) and the corresponding trade name with higher numbers.

genügen, wobei n Werte zwischen 1 (Propylenglycol, siehe unten) und ca. 12 annehmen kann. Technisch bedeutsam sind hier insbesondere Di-, Tri- und Tetrapropylenglycol, d.h. die Vertreter mit n=2, 3 und 4 in Formel II.Polypropylene glycols which can be used according to the invention (abbreviated PPG) are polymers of propylene glycol which correspond to the general formula II

n, where n can assume values between 1 (propylene glycol, see below) and about 12. Of particular technical importance here are di-, tri- and tetrapropylene glycols, ie the representatives with n = 2, 3 and 4 in formula II.

Glycerin is a colorless, clear, heavy-bodied, odorless sweet-tasting hygroscopic liquid of density 1.261 that solidifies at 18.2 ° C. Glycerol was originally a by-product of fat saponification but is now technically synthesized in large quantities. Most technical processes are based on propene, which is processed into glycerol via the intermediates allyl chloride, epichlorohydrin. Another technical process is the hydroxylation of allyl alcohol with hydrogen peroxide at the WO ₃ contact via the step of the glycide.

4-hydroxymethyl-1,3-dioxolan-2-one (glycerol carbonate) is accessible by transesterification of ethylene carbonate or dimethyl carbonate with glycerol, with the by-products of ethylene glycol or methanol. Another synthetic route is based on glycidol (2,3-epoxy-1-propanol), which is converted under pressure in the presence of catalysts with CO ₂ to glycerol carbonate. Glycerine carbonate is a clear, easily agitated liquid with a density of 1.398 gcm ^-3 , which boils at 125-130 ° C (0.15 mbar).

-Ethylene Glycol (1,2-Eiandiol, "Glycol") is a colorless, viscous, sweet-tasting, highly hygroscopic liquid that is miscible with water, alcohols and acetone and has a density of 1.113. The solidification point of ethylene glycol is -11.5 ° C, the liquid boils at 198 ° C. Technically, ethylene glycol is recovered from ethylene oxide by heating with water under pressure. Promising manufacturing processes can also be built on the acetoxylation of ethylene and subsequent hydrolysis or on synthesis gas reactions.

There are two isomers of the propylene glycol, the 1,3-propanediol and the 1,2-propanediol, 1,3-propanediol (trimethylene glycol) is a neutral, colorless and odorless, sweet-tasting liquid of density 1,0597, which at -32 ° C solidifies and boiling at 214 ° C. The preparation of 1,3-propanediol succeeds from acrolein and water with subsequent catalytic hydrogenation.

Technically much more significant is 1,2-propanediol (propylene glycol), which is an oily, colorless, almost odorless liquid, density 1.0381, which solidifies at -60 ° C and boils at 188 ° C. 1,2-Propanediol is prepared from propylene oxide by water addition.

4-Methyl-1,3-dioxolan-2-one (propylene carbonate) is a water-bright, mobile liquid, with a density of 1.2057 gcm ^-3 , the melting point is -49 ° C, the boiling point at 242 ° C. Also propylene carbonate is industrially accessible by reaction of propylene oxide and CO ₂ at 200 ° C and 80 bar.

As perfume oils or fragrances, individual fragrance compounds, e.g. the synthetic products of the ester, ether, aldehyde, ketone, alcohol and hydrocarbon type are used. Fragrance compounds of the ester type are known e.g. Benzyl acetate, phenoxyethyl isobutyrate, p-tert-butylcyclohexyl acetate, linalyl acetate, dimethylbenzylcarbinyl acetate, phenylethyl acetate, linalyl benzoate, benzyl formate, ethylmethylphenyl glycinate, allylcyclohexyl propionate, styrallyl propionate and benzyl salicylate. The ethers include, for example, benzyl ethyl ether, to the aldehydes e.g. the linear alkanals having 8-18 C atoms, citral, citronellal, citronellyloxyacetaldehyde, cyclamen aldehyde, hydroxycitronellal, lilial and bourgeonal, to the ketones e.g. the ionones, α-isomethylionone and methyl cedryl ketone, the alcohols anethole, citronellol, eugeriol, geraniol, linalool, phenylethyl alcohol and terpineol, the hydrocarbons mainly include the terpenes such as limonene and pinene. Preferably, however, mixtures of different fragrances are used, which together produce an attractive fragrance. Such perfume oils may also contain natural fragrance mixtures such as are available from vegetable sources, e.g. Pine, citrus, jasmine, patchouly, rose or ylang-ylang oil. Also suitable are muscatel, sage, chamomile, clove, lemon balm, mint, cinnamon, lime, juniper, vetiver, olibanum, galbanum and labdanum, and orange blossom, neroliol, orange peel and sandalwood.

As a binder in the context of the present invention, mixtures of said binders with water can be used. In this case, in order to obtain the advantages according to the invention a maximum of 50 wt .-% of the binder (based on the binder) consist of water, wherein the water content of the binder (more precisely: the binder mixture or the binder solution) is preferably lower, so for example below 40 wt .-%, preferably below 30 wt .-% and particularly preferably below 20 wt .-%, each based on the binder.

By choosing the liquid binder, the color impression of the compound can be controlled to a considerable extent. For example, while the dye Sandolan® rhodamine results in the use of glycerol as a binder on zeolite a violet compound, it is obtained with the same carrier material by using Fatty alcohol ethoxylates as a binder a pink compound. A combination of blue and yellow dyes can yield a blue zeolite-based compound through a mixture of water and glycerin, while the replacement of glycerol by PEG 400 results in a green compound. In this case, the technician will have no difficulty in providing certain color impressions of the compounds to be prepared by selecting the binder. The described variations are particularly important for dyes, in other "small components" processing advantages can be achieved by the choice of binder. The usable "small components" are described below.

The third component included in the detergent additives is a detergent and cleaner ingredient from the above group. Such ingredients, the proportion of which is usually no more than 2% by weight in the ready-made washing and cleaning agent, are often referred to as "small components". Also, the amount in which these minor components are contained in the additives is preferably within a narrower range, so that preferred detergent additives include the detergent ingredients of the group of enzymes, pH modifiers, fluorescers, dyes, foam inhibitors , Anti redeposition agents, optical brighteners, grayness inhibitors, color transfer inhibitors and corrosion inhibitors and mixtures thereof in amounts of from 0.1 to 40% by weight, preferably from 1 to 15% by weight, more preferably from 2 to 10% by weight and in particular from 2.5 to 5 wt .-%, each based on the additive included. The above-mentioned small components will be briefly described below.

Suitable enzymes are those from the class of proteases, lipases, amylases, cellulases or mixtures thereof. Particularly suitable are bacterial strains or fungi, such as Bacillus subtilis, Bacillus licheniformis and Streptomyces griseus derived enzymatic agents. Preferably, subtilisin-type proteases and in particular proteases derived from Bacillus lentus are used. In this case, enzyme mixtures, for example from protease and amylase or protease and lipase or protease and cellulase or from cellulase and lipase or from protease, amylase and lipase or protease, lipase and cellulase, but in particular cellulase-containing mixtures are of particular interest. Peroxidases or oxidases have also proved suitable in some cases. The enzymes may be adsorbed to carriers and / or embedded in encapsulants to protect against premature degradation.

The pH-adjusting agents have the task to bring the pH of the washing and cleaning liquor in the desired range, and depending on the other composition of detergents and cleaners acidic or alkaline actuating agent can be used. The selection of acidic or alkaline substances does not present any difficulties to the skilled person.

Fluorescent agents or fluorescent dyes which in daylight u./od. can fluoresce strongly in UV light, can be used for dyeing detergents and cleaners. Suitable fluorescent dyes for daylight colors include the acridines, xanthenes (e.g., fluotescein, rhodamine), thioxanthenes, pyrenes, and other classes. In the broadest sense, the optical brighteners (whiteners), which are added to detergents, also belong to the group of fluorescent dyes, see below.

Dyes which are preferred are all colorants which have a high storage stability and insensitivity to the other ingredients of the compositions and to light and no pronounced substantivity to textile fibers in order not to color them. It may be advantageous if the dyes can be oxidatively destroyed in the washing process. It has proved to be advantageous to use colorants which are soluble in water or at room temperature in liquid organic substances. Suitable are, for example, anionic colorants, e.g. anionic nitrosofarads. A possible colorant is, for example, naphthol green (Color Index (CI) Part 1: Acid Green 1, Part 2: 10020), which is available as a commercial product, for example as Basacid® Green 970 from BASF, Ludwigshafen, and mixtures thereof with suitable blue dyes. Further colorants used are Pigmosol® Blue 6900 (CI 74160), Pigmosol® Green 8730 (CI 74260), Basonyl® Red 545 FL (CI 45170); Sandolan® Rhodamine EB400 (CI 45100), Basacid® Yellow 094 (CI 47005), Sicovit® Patent Blue 85 E 131 (CI 42051), Acid Blue 183 (CAS 12217-22-0, CI Acidblue 183), Pigment Blue 15 (CI 74160), Supranol® Blue GLW (CAS 12219-32-8, CI Acidblue 221)), Nylosan® Yellow N-7GL SGR (CAS 61814-57-1, CI Acidyellow 218) and / or Sandolan® Blue (CI Acid Blue 182, CAS 12219-26-0). To improve the whiteness of detergent particles which are powdered with the compounds according to the invention, white powders can also be used. Titanium dioxide and sodium sulfate are particularly suitable as possible substances here.

In addition, the washing and cleaning agent additives may also contain, as small components, components which positively influence the oil and grease washability from textiles (so-called soil repellents). This effect is particularly evident when a textile is dirty, which has been previously washed several times with a detergent according to the invention, which contains this oil and fat dissolving component. The preferred oil and fat dissolving components include, for example, nonionic cellulose ethers such as methylcellulose and methylhydroxypropylcellulose with a proportion of methoxyl groups of 15 to 30 wt .-% and hydroxypropoxyl groups of 1 to 15 wt .-%, each based on the nonionic Cellulose ethers, as well as those of the prior art known polymers of phthalic acid and / or terephthalic acid or derivatives thereof, in particular polymers of ethylene terephthalates and / or polyethylene glycol terephthalates or anionic and / or nonionic modified derivatives thereof. Particularly preferred of these are the sulfonated derivatives of phthalic and terephthalic acid polymers.

As small components, the additives according to the invention may also contain optical brighteners such as, for example, derivatives of diaminostilbenedisulfonic acid or their alkali metal salts. Suitable are e.g. Salts of 4,4'-bis (2-anilino-4-morpholino-1,3,5-triazinyl-6-amino) stilbene-2,2'-disulfonic acid or similarly constructed compounds which, instead of the morpholino group, a diethanolamino group , a methylamino group, an anilino group or a 2-methoxyethylamino group. Furthermore, brighteners of the substituted diphenylstyrene type may be present, e.g. the alkali salts of 4,4'-bis (2-sulfostyryl) -diphenyl, 4,4'-bis (4-chloro-3-sulfostyryl) -diphenyl, or 4- (4-chlorostyryl) -4 '- (2- sulfostyryl). Mixtures of the aforementioned brightener can be used.

Grayness inhibitors have the task of keeping the dirt detached from the fiber suspended in the liquor and thus preventing the dirt from being rebuilt. Water-soluble colloids of mostly organic nature are suitable for this purpose, for example the water-soluble salts of polymeric carboxylic acids, glue, gelatin, salts of ether sulfonic acids or cellulose or salts of acidic sulfuric acid esters of cellulose or starch. Also, water-soluble, acidic.groups containing polyamides are suitable for this purpose. Furthermore, soluble starch preparations and other than the above-mentioned starch products can be used, e.g. degraded starch, aldehyde levels, etc. Also polyvinylpyrrolidone is useful. However, preference is given to cellulose ethers such as. Carboxymethylcellulose (Na salt), methylcellulose, hydroxyalkylcellulose and mixed ethers such as methylhydroxyethylcellulose, methylhydroxypropylcellulose, methylcarboxymethylcellulose and mixtures thereof

Color transfer inhibitors are intended to prevent washed dye staining and staining other textiles when washing colored fabrics. Suitable substances come from the group of polymers, with polyvinylpyrrolidone occupying an outstanding position.

Finally, the additives according to the invention may also contain UV absorbers which are absorbed by the treated textiles and improve the light resistance of the fibers. Compounds having these desired properties include, for example, the non-radiative deactivating compounds and derivatives of benzophenone having substituents in the 2- and / or 4-position. Also suitable are substituted benzotriazoles, phenyl-substituted acrylates (cinnamic acid derivatives) in the 3-position, optionally with cyano groups in the 2-position, salicylates, organic Ni complexes and natural substances such as umbelliferone and the body's own urocanic acid.

Disclosed herein is a process for making a laundry detergent and detergent additive which comprises a detergent and cleaner ingredient selected from the group of enzymes, pH adjusters, fluorescers, dyes, foam inhibitors, anti redeposition agents, optical brighteners, grayness inhibitors, dye transfer inhibitors and corrosion inhibitors and Mixtures thereof dissolved or suspended in one or more binders liquid at temperatures up to 40 ° C and this solution or suspension applied to moving substrates with an oil absorption capacity of at least 20g / 100g.

The process can be carried out in a variety of apparatuses commonly used in the washing and cleaning industry. Suitable mixers are characterized in that they can enter a certain amount of energy in the mix. Thus, conventional mixers and mixed granulators are suitable for carrying out the method according to the invention. Both high-intensity mixers ("high-shear mixers") and normal mixers with lower speeds of rotation can be used as mixers. Suitable mixers are, for example, Eirich® mixers of the R or RV series (trademarks of the Maschinenfabrik Gustav Eirich, Hardheim), the Schugi® Flexomix, the Fukae® FS-G mixers (trademarks of Fukae Powtech, Kogyo Co., Japan), the Lödige ® FM, KM and CB mixers (trademark of Lödige Maschinenbau GmbH, Paderborn) or the Drais® series T or KT (trademark of Drais-Werke GmbH, Mannheim). Of course, several of the above-mentioned mixers can be combined with each other, i. be connected in series. For example, the combination of a Lödige CB mixer with a downstream Lödige KM mixer is particularly suitable.

The above-mentioned preferred areas of use of the ingredients also apply to the processes. Thus, preference is given to processes in which, based in each case on the final process product, the support material in amounts of 40 to 98.9 wt .-%, preferably from 50 to 95 wt .-%, particularly preferably from 55 to 85 wt .-% and in particular from 60 to 80 wt .-%, the one or more liquid at temperatures up to 40 ° C (s) binder (s) in amounts of 1 to 50 wt .-%, preferably from 5 to 47.5 wt .-%, particularly preferably from From 7.5 to 45% by weight, and more preferably from 10 to 40% by weight; and the laundry detergent and cleaning agent ingredient from the group of enzymes, pH adjusters, fluorescers, dyes, foam inhibitors, anti redeposition agents, optical brighteners, grayness inhibitors, dye transfer inhibitors, and Corrosion inhibitors and mixtures thereof in amounts of 0.1 to 40 wt .-%, preferably from 1 to 15 wt .-%, particularly preferably from 2 to 10 wt .-% and in particular from 2.5 to 5 wt .-%, be used.

With regard to the selection of preferably used carrier materials, binders and small components can be made to the above statements. Preferred processes are characterized in that one or more substances from the group of silicates and / or aluminum silicates are used as support material, it being preferred that all particles of the support material are smaller than 200 .mu.m, preferably smaller than 100 .mu.m, particularly preferably smaller than 75 μm and in particular less than 50 microns. Preference is also given to processes in which substances which are soluble in the abovementioned binders are preferably used as the washing and cleaning agent ingredient.

The method variant described above comprises spraying a solution or suspension of the so-called small component onto a moving solid bed of the particles of the carrier material. This procedure is recommended if the small components are soluble in the chosen binder or can be converted into stable suspensions in it. In other cases, it is also possible not to spray the small component together with the binder, but to present it together with the carrier material as a moving solid bed. There is therefore also described a process for the preparation of a detergent additive which comprises a solid detergent and cleaner ingredient selected from the group consisting of enzymes, pH adjusters, fluorescers, dyes, foam inhibitors, anti redeposition agents, optical brighteners, grayness inhibitors, dye transfer inhibitors and Mixed corrosion inhibitors and mixtures with support materials having an oil absorption capacity of at least 20g / 100g and applying to the moving mixture one or more at temperatures up to 40 ° C liquid binder.

In this variant of the method, again, the embodiments characterized above as preferred apply as preferred. Processes in which, in each case based on the final process product, the support material in amounts of 40 to 98.9 wt .-%, preferably from 50 to 95 wt .-%, particularly preferably from 55 to 85 wt .-% and in particular of 60 up to 80 wt .-% is used, wherein substances from the group of silicates and / or aluminum silicates are preferred and it is particularly preferred that all particles of the carrier material is less than 200 microns, preferably less than 100 microns, more preferably less than 75 μm and in particular smaller than 50 μm are the binder (s) liquid at temperatures up to 40 ° C in quantities of 1 to 50 wt , 5 to 45 wt .-% and in particular from 10 to 40 wt .-%, are used, wherein preferably one or more substances from the group of polyethylene glycols and polypropylene glycols, glycerol, glycerol carbonate, ethylene glycol, propylene glycol and propylene carbonate and Par and detergent ingredients from the group of enzymes, pH adjusters, fluorescers, dyes, foam inhibitors, anti redeposition agents, optical brighteners, grayness inhibitors, dye transfer inhibitors and corrosion inhibitors and mixtures thereof in amounts of 0.1 to 40 wt .-%, preferably from 1 to 15 wt .-%, particularly preferably from 2 to 10 wt .-% and in particular from 2.5 to 5 wt .-%, are used, are therefore preferred.

The detergent and cleaning agent additives described above, which are obtainable by the likewise described methods, can be added to detergents and cleaners. The first object of the present invention is therefore the use of detergents and cleaning agent additives which 40 to 98.9 wt .-% of carrier material having an oil absorption capacity of at least 20g / 100g and a particle size of less than 200 microns, 1 to 50 wt .-% one or more binders liquid at temperatures up to 40 ° C, 0.1 to 40 wt .-% of a detergent and cleaner ingredient from the group of enzymes, pH adjusters, fluorescers, dyes, foam inhibitors, anti redeposition agents, optical brighteners, grayness inhibitors , Color transfer inhibitors and corrosion inhibitors and mixtures thereof, as a powdering agent for coarse detergent particles.

• gegebenenfalls nach Abmischung mit weiteren Wasch- und Reinigungsmittel-Inhaltsstoffen
• in an sich bekannter Weise zu Wasch- und Reinigungsmittelformkörpern verpreßt, werden.

The particles powdered in this way can be further processed, for example

• optionally after mixing with other detergent and cleaning agent ingredients
• pressed in a conventional manner to washing and cleaning agent moldings are.

Another object of the invention is therefore a process for the preparation of detergents and cleaners, in which detergent and cleaning agent particles are prepared in a conventional manner, with washing and cleaning agent additives containing 40 to 98.9 wt .-% Support material having an oil absorption capacity of at least 20 g / 100 g and a particle size less than 200 microns, 1 to 50 wt .-% of one or more liquid at temperatures up to 40 ° C binder, 0.1 to 40 wt .-% of a detergent and cleaning agent Ingredient from the group of enzymes, pH adjusters, fluorescers, dyes, foam inhibitors, anti Redepositionsmittel, optical brightener, grayness inhibitors, dye transfer inhibitors and corrosion inhibitors and mixtures thereof are powdered.

In preferred processes, the detergent particles have a particle size distribution, wherein at least 75 wt .-%, preferably at least 85 wt .-% and in particular more than 95 wt .-% of the particles have particle sizes between 200 and 2000 .mu.m, preferably between 400 and 1600 .mu.m and in particular between 600 and 1200 microns. The additives of the invention, which are used as Abwuderungsmittel, are preferably finely divided. In particularly preferred processes, the detergent additives have a particle size distribution in which at least 75% by weight, preferably at least 85% by weight and in particular more than 95% by weight of the particles have particle sizes between 1 and 200 μm, preferably between 2 and 100 microns, and more preferably between 5 and 50 microns.

The powdering succeeds by methods known in the art. In a technically advantageous embodiment are used as adhesion promoters between detergent and cleaning agent particles and additive (powdering), the binder used in the preparation of the additive, so that preferred methods are characterized in that the detergent particles, based on their weight , with 0.1 to 10 wt .-% of one or more liquid at temperatures up to 40 ° C binder, preferably from the group of polyethylene glycols and polypropylene glycols, glycerol, glycerol carbonate, ethylene glycol, propylene glycol and propylene carbonate and perfume oils, paraffins, silicone oils and ethoxylated fatty alcohols , sprayed or doused and then powdered with the detergent and cleaning agent additives.

Examples: 1. Preparation of a dye additive

3 parts by weight of a blue dye (Supranol® Blue) was dissolved in 18 parts by weight of glycerol (86%). In a 20 liter ploughshare mixer from Lödige, 79 parts by weight of zeolite X (Wessalith® XD, Degussa, particle size: 100% <50 μm) were initially charged and sprayed with the dye solution over a period of 2 minutes. The result was a finely divided, light blue compound. If this compound is subsequently treated in the mixer for a further 3 minutes, the color impression intensifies and a dark blue powder is formed.

2. Preparation of a dye additive

3 parts by weight of a green dye (Pigmosol® Green) was dissolved in 17 parts by weight of glycerol (86%). In a 20-liter ploughshare mixer Lödige 80 parts by weight of zeolite X (Wessalith® XD, Degussa, particle size: 100% <50 microns) were placed and sprayed over a period of 2 minutes with the dye solution. The result was a finely divided, almost colorless, light green compound. If this compound is subsequently treated in the mixer for a further 3 minutes, the color impression intensifies and a green powder is formed.

3. Preparation of a dye additive

0.5 part by weight of a red dye (Sandolan® Rhodamine E-RD 400%) was dissolved in 19.5 parts by weight of glycerol (86%). In a 20-liter ploughshare mixer Lödige 80 parts by weight of zeolite X (Wessalith® XD, Degussa, particle size: 100% <50 microns) were placed and sprayed over a period of 5 minutes with the dye solution. The result was a finely divided, purple-red compound.

4. Preparation of a dye additive

1.64 parts by weight of a blue dye (Supranol® Blue GLW) and 1.64 parts by weight of a yellow dye (Nylosan® yellow) were dissolved in a mixture of 10 parts by weight of PEG 400 and 6.72 parts by weight of water. In a 20-liter ploughshare mixer Lödige 80 parts by weight of zeolite X (Wessalith® XD, Degussa, particle size: 100% <50 microns) were submitted and sprayed over a period of 2 minutes with the dye solution, then mixed for 3 minutes. The result was a finely divided, green compound.

If PEG 400 is replaced by glycerol in this example, a blue powder is obtained.

5. Preparation of a brightening additive

13 parts by weight of an optical brightener (Tinopal® CBS-X, strongly yellowish) were mixed with 72 parts by weight of zeolite X (Wessalith® XD, Degussa, particle size: 100% <50 μm). On the moving solids in a 20 liter ploughshare mixer Lödige 15 parts by weight of glycerol (86%) were sprayed within 2 minutes. After three minutes of mixing, a finely divided, slightly yellowish compound was formed.

6. Preparation of a high white perfume additive

In a mixer, 55 parts by weight of zeolite X (Wessalith® XD, Degussa, particle size: 100% <50 microns) and 5 wt .-% titanium dioxide (particle size: 100% <50 mm) were introduced and mixed. 40 parts by weight of perfume oil were added to this mixture within 2 minutes. After three minutes of mixing, a pure white finely divided powder was obtained.

All examples used the chopper of the Lödige mixer.

The compounds prepared under 1 to 4 can be mixed with conventional detergents and cleaning agents, wherein the use of the compounds as a powdering agent brings particular advantages. In order to demonstrate the advantages of the additives, extruded particles of a laundry detergent with 1 and 2 wt .-% of the compounds were powdered. With the dye additives from 1 and 2 very homogeneous colored particles were obtained, which differed positively from conventionally colored particles. The dye additives obtained according to the invention had a homogeneous color distribution and were readily free-flowing, while the jetting of a dye solution yielded sticky particles with inhomogeneous color distribution.

By powdering with the whitening additive prepared in 5, the whiteness of the particles in daylight could be significantly improved, again without the problems of inhomogeneities in the color or brightness impression occurring with conventional powdering with pure brightener. A pure mixture of zeolite and brightener powder, however, shows a yellowish impression.

If washing and cleaning agent particles are powdered with the additive prepared under 6., very free-flowing products with a high degree of whiteness are obtained. Another advantage is the much more homogeneous distribution of perfume in the product.

Claims (5)

1. Use of detergent and cleaner additives which comprise 40 to 98.9% by weight of carrier material with an oil absorption capacity of at least 20 g/100 g and a particle size of less than 200 µm, 1 to 50% by weight of one or more binders which are liquid at temperatures up to 40°C, and 0.1 to 40% by weight of a detergent and cleaner ingredient from the group of enzymes, pH extenders, fluorescent agents, dyes, foam inhibitors, antiredeposition agents, optical brighteners, greying inhibitors, color transfer inhibitors and corrosion inhibitors and mixtures thereof as powdering agents for coarse-grained detergent and cleaner particles.
2. Use according to Claim 1, characterized in that the powdered detergent and cleaner particles - optionally after mixing with further detergent and cleaner ingredients - are compressed to give detergent and cleaner shaped bodies.
3. Process for the preparation of detergents and cleaners, characterized in that detergent and cleaner particles are prepared which are powdered with detergent and cleaner additives which comprise 40 to 98.9% by weight of carrier material with an oil absorption capacity of at least 20 g/100 g and a particle size of less than 200 µm, 1 to 50% by weight of one or more binders which are liquid at temperatures up to 40°C, and 0.1 to 40% by weight of a detergent and cleaner ingredient from the group of enzymes, pH extenders, fluorescent agents, dyes, foam inhibitors, antiredeposition agents, optical brighteners, greying inhibitors, color transfer inhibitors and corrosion inhibitors and mixtures thereof.
4. Process according to Claim 3, characterized in that the detergent and cleaner particles have a particle size distribution in which at least 75% by weight, preferably at least 85% by weight and in particular more than 95% by weight, of the particles have particle sizes between 200 and 2000 µm, preferably between 400 and 1600 µm and in particular between 600 and 1200 µm.
5. Process according to one of Claims 3 or 4, characterized in that the detergent and cleaner additives have a particle size distribution in which at least 75% by weight, preferably at least 85% by weight and in particular more than 95% by weight, of the particles have particle sizes between 1 to 200 µm, preferably between 2 and 100 µm and in particular between 5 and 50 µm.