DE19916188A1 - Granular bleaching aid, useful in laundry detergent, bleach, oxidant and disinfectant, contains N-acyl or O-acyl compound as bleach activator and sugar surfactant as granulating aid - Google Patents

Abstract

Granular bleaching aid contains bleach activator of the class of N-acyl and O-acyl compounds and granulating aid(s) of the sugar surfactant class. An Independent claim is also included for the production of the granulate.

Description

The present invention relates to bleach activator active compounds prepared in granular form substances and a method for producing such granules.

European Patent EP 0 037 026 describes a method for producing a Readily soluble granules known that contain 90 to 98 wt .-% of a bleach activator. According to this method, the powdery bleach activator with cellulose or Starch ether or starch, which is also in powder form, is homogeneously mixed and then with water or a dilute aqueous solution of the cellulose ether sprayed and granulated at the same time. The granules are then dried. As Bleach activator is preferred tetraacetylethylenediamine (TAED) and as a cellulose ether preferably sodium carboxymethyl cellulose (CMC) used. The products stand out by a quick and complete solubility.

Another manufacturing process is in European Patent EP 0 070 474 described. Here is an aqueous slurry containing the bleach activator and spray dried the cellulose ether in the weight ratio 97: 3 to 93: 7. Regarding Their properties are the products with the granules obtainable according to EP 0 037 026 comparable.

Another manufacturing process is described in European patent EP 0 075 818 described, namely mixtures of bleach activator and water-swellable Excipients without the use of water under pressure to particles with a diameter of Compacted 0.1 to 3 mm.

It has been shown that the dissolution rate of the known granules at low Washing temperatures, especially in the range between 25 ° C and 40 ° C not yet full satisfied. This applies to an even greater extent to compacted granules, such as those according to the  Patent EP 0 075 818 cited can be obtained at low washing temperatures often decay only very slowly or incompletely.

The invention described below leads to a significant improvement in Dispersibility and solubility properties of the granules. Furthermore, the required one The amount of these auxiliaries is so small that the active substance content of the agents is only minimal is reduced.

The invention relates to granular bleaching aids containing Bleach activators from the class of the N-acyl and O-acyl compounds and at least a granulation aid from the sugar surfactant class.

Among bleach activators, which are contained in the granules according to the invention, are said to be Compounds are understood to be aliphatic under perhydrolysis conditions Peroxocarboxylic acids with preferably 1 to 10 C atoms, in particular 2 to 4 C atoms, and / or optionally substituted perbenzoic acid. Suitable substances are the O- and / or N-acyl groups of the number of carbon atoms mentioned and / or optionally carry substituted benzoyl groups. Multi-acylated alkylenediamines are preferred, especially tetraacetylethylenediamine (TAED), acylated triazine derivatives, especially 1,5- Diacetyl-2,4-dioxohexahydro-1,3,5-triazine (DADHT), acylated glycolurils, in particular Tetraacetylglycoluril (TAGU), N-acylimides, especially N-nonanoylsuccinimide (NOSI), acylated phenol sulfonates, especially n-nonanoyl or isononanoyloxybenzene sulfonate, the sulfonate groups being in the form of the sodium salt (n- or iso-NOBS), Carboxylic anhydrides, especially phthalic anhydride, acylated polyhydric alcohols, in particular triacetin, ethylene glycol diacetate, 2,5-diacetoxy-2,5-dihydrofuran and those from the German patent applications DE 196 16 693 and DE 196 16 767 known enol esters as well as acetylated sorbitol and mannitol or their in the European Patent application EP 0 525239 mixtures described (SORMAN®), acylated sugar derivatives, especially pentaacetylglucose (PAG), pentaacetylfructose, tetraacetylxylose and octaacetyl lactose and acetylated, optionally N-alkylated, glucamine and gluco nolactone, and / or N-acylated lactams, for example N-benzoylcaprolactam, which are derived from the international patent applications WO 94/27970, WO 94/28102, WO 94/28103,  WO 95/00626, WO 95/14759 and WO 95/17498 are known. The from the German Pa tentanmeldung DE 196 16 769 known hydrophilically substituted acylacetals and the in German patent application DE 196 16 770 and international patent application Acyl lactams described in WO 95/14075 are also preferably used. Also the combinations of several known from German patent application DE 44 43 177 Bleach activators can be used. TAED is particularly preferred. The salary the granules of bleach activators are preferably 70% by weight to 99% by weight, in particular 85% by weight to 95% by weight.

In the context of the present invention, surfactants from sugar surfactants are said to Classes of alkyl polyglycosides and glucamides can be understood.

Alkypolyglycosides which can be used according to the invention as granulating aids satisfy the general formula RO (G) _z , in which R represents a linear or branched, in particular methyl-branched, saturated or unsaturated, aliphatic radical having 8 to 22, preferably 12 to 18, carbon atoms and G is the symbol which stands for a glycose unit with 5 or 6 carbon atoms, preferably for glucose. The degree of glycosidation z, which can also assume fractional numerical values as the quantity to be determined analytically, is in the range from 1.0 to 4.0, preferably in the range from 1.0 to 2.0 and in particular in the range from 1.1 to 1 , 4th

Linear alkyl polyglucosides, ie alkyl polyglycosides, in which the polyglycosyl radical is a glucose radical and the alkyl radical is an n-alkyl radical are preferably used. These can be described using the following formula

where x is the 1 degree of glycosidation z described above, preferred Values of x thus in the range from 0 to 3, preferably in the range from 0 to 1 and in particular in the range from 0.1 to 0.4. The number n of methylene groups is preferably between 7 and 21, preferably between 11 and 17.

The alkyl polyglycosides preferably used according to the invention (hereinafter briefly as APG) can be made by known methods based on known raw materials getting produced. For example, dextrose is in the presence of an acid catalyst reacted with n-butanol to give butylpolyglycoside mixtures, which with long-chain Alcohols also in the presence of an acid catalyst to the desired ones Alkyl polyglycoside mixtures are re-glycosidated. It is also possible to use dextrose directly with the desired long chain alcohol to the desired Glycosidation of alkyl polyglycoside mixtures.

The structure of the products can be varied within certain limits. The alkyl radical is thereby determined by the choice of long chain alcohol. For economic reasons the industrially accessible alcohols with 8 to 22 carbon atoms, in particular native alcohols from the hydrogenation of carboxylic acids or Carboxylic acid derivatives, preferred. Also available from technical alcohol syntheses Alcohols such as oxo alcohols and Ziegler alcohols can be used.

The polyglycosyl radicals G _z are determined, on the one hand, by the selection of the carbohydrate and, on the other hand, by setting the average degree of polymerization (degree of glycosidation z), as described, for example, in German patent DE 19 43 689. In principle, polysaccharides, e.g. B. starches, maltodextrins, dextrose, galactose, mannose, xylose, etc. can be used. The commercially available carbohydrates starch, maltodextrins and in particular dextrose are preferred. Since the economically interesting APG syntheses are not regio- and stereoselective, the alkyl polyglycosides are always mixtures of oligomers, which in turn represent mixtures of different isomeric forms. They exist side by side with α- and β-glycosidic bonds in pyranose and furanose form. The linkages between two saccharide residues are also different.

Alkyl polyglycosides which can be used according to the invention can also be prepared by mixing alkyl polyglycosides with alkyl monoglycosides. For example, alkyl monoglycosides can be obtained or enriched from alkyl polyglycosides using polar solvents such as acetone using the process disclosed in EP 092 355. The degree of glycosidation of alkyl polyglycosides is usually determined by ¹ H nuclear magnetic resonance measurements.

In addition to the alkyl polyglycosides, glucamides can also be used as sugar surfactants. In the context of the present application, the term “glucamides” is to be understood as a generic term for all polyhydroxy fatty acid amides that can be described by the formula (I):

in which RCO stands for an aliphatic acyl radical with 6 to 22 carbon atoms, R ¹ for hydrogen, an alkyl or hydroxyalkyl radical with 1 to 4 carbon atoms and [Z] for a linear or branched polyhydroxyalkyl radical with 3 to 10 carbon atoms and 3 to 10 hydroxyl groups. The polyhydroxy fatty acid amides are known substances which can usually be obtained by reductive amination of a reducing sugar with ammonia, an alkylamine or an alkanolamine and subsequent acylation with a fatty acid, a fatty acid alkyl ester or a fatty acid chloride.

Polyhydroxy fatty acid amides of the formula I are preferably used, in which the Acyl residue RCO has a narrower chain distribution and the residue [Z] from usual Residual sugar is selected. In the context of the present invention are therefore granular Bleaching agents preferred in which a polyhydroxy fatty acid amide of the formula (I) is used is, in the RCO for an aliphatic acyl radical having 12 to 18 carbon atoms, R 'for Hydrogen, an alkyl or hydroxyalkyl radical having 1 to 4 carbon atoms and [Z] for a glucose, fructose, maltose, lactose, galactose, mannose or xylose residue.  

In a particularly preferred embodiment of the present invention, the generic term "glucamides" does not generally refer to polyhydroxy fatty acid amides, but rather to the class of amides derived from glucose, ie compounds of the formula I in which the radical [Z] is glucose. In particularly preferred granular bleaching agents, a C _12-18 -N-methylglucamide (R ¹ = CH ₃ , Z = glucose residue in formula I) is used.

The group of polyhydroxy fatty acid amides, also referred to simply as glucamides in the context of the present invention, also includes compounds of the formula (II)

in which R represents a linear or branched alkyl or alkenyl radical having 7 to 12 carbon atoms, R ^{1 represents} a linear, branched or cyclic alkylene radical or an arylene radical having 2 to 8 carbon atoms and R ^{2 represents} a linear, branched or cyclic alkyl radical or an aryl radical or an oxy-alkyl radical having 1 to 8 carbon atoms, preference being given to methyl, ethyl, propyl, isopropyl, n-butyl, isobutyl, tert-butyl or phenyl radicals and [Z] for a linear one Polyhydroxyalkyl radical, the alkyl chain of which is substituted by at least two hydroxyl groups, or alkoxylated, preferably ethoxylated or propoxylated, derivatives of this radical.

[Z] is preferably obtained by reductive amination of a reduced sugar, for example glucose, fructose, maltose, lactose, galactose, mannose or xylose. The N-alkoxy- or N-aryloxy-substituted compounds can then, for example, after the teaching of international patent application WO 95/07331 by implementation with fat acid methyl esters in the presence of an alkoxide as a catalyst in the desired Polyhydroxy fatty acid amides are transferred.

In addition to the sugar surfactants mentioned, the granular according to the invention can If desired, further non-ionic surfactant (s) from the group of the bleaching agents alkoxylated alcohols contained in amounts of 1 to 10 wt .-%.  

Alcohols whose alkoxylation provides such nonionic surfactants can be use all longer-chain alcohols of natural or synthetic origin. Out For commercial reasons, the industrially accessible alcohols with 8 to 22 are Carbon atoms, especially native alcohols from the hydrogenation of carboxylic acids or carboxylic acid derivatives (so-called fatty alcohols) are preferred. Also the alcohols accessible from technical alcohol syntheses, such as oxo alcohols and Brick alcohols can be used.

The alcohols are in particular primary alcohols with preferably 8 to 18 carbon atoms, in which the alcohol radical may be methyl-branched linearly or preferably in the 2-position or may contain linear and methyl-branched radicals in the mixture, as are usually present in oxo alcohol radicals. In preferred alkoxylated nonionic surfactants, the alcohol distribution is even narrower in its chain distribution, so that granular bleaching agents contain alkoxylated alcohol (s) as nonionic surfactant (s), which are derived from C _8-22 alcohols, preferably from C _{8 Derive -20} alcohols and in particular from C _12-18 alcohols.

In particular, however, alcohol ethoxylates with linear residues from alcohols of native origin with 12 to 18 carbon atoms, for. B. from coconut, palm, tallow or oleyl alcohol, and an average of 2 to 8 EO per mole of alcohol preferred. The preferred ethoxylated alcohols include, for example, C _12-14 alcohols with 3 EO or 4 EO, C _9-11 alcohol with 7 EO, C _13-15 alcohols with 3 EO, 5 EO, 7 EO or 8 EO, C. _12-18 alcohols with 3 EO, 5 EO or 7 EO and mixtures thereof, such as mixtures of C _12-14 alcohol with 3 EO and C _12-18 alcohol with 5 EO. The degrees of ethoxylation given represent statistical averages, which can be an integer or a fraction for a specific product. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE). In addition to these nonionic surfactants, fatty alcohols with more than 12 EO can also be used. Examples include tallow fatty alcohol with 14 EO, 25 EO, 30 EO or 40 EO.

Preferred granular bleaches contain additional nonionic surfactant (s) ethoxylated alcohols with degrees of ethoxylation between 2 and 40, preferably between 3 and 30 and in particular between 5 and 25.

Of course, it is possible to use alkoxylated alcohols, not only with Ethylene or propylene oxide or other alkoxylating agents have been reacted, but by synchronous or sequential implementation with several Alkoylating agents (e.g. ethoxylation / propoxylation) are available. Such mixed alkoxylated nonionic surfactants can be a statistical sequence of the individual EO-PO Have units or are present as a block or graft polymers.

In a further embodiment of the invention, granular bleaching agents are preferred which are mixed as additional nonionic surfactant (s), preferably alkoxylated contain ethoxylated and propoxylated alcohols.

Preferred granular bleaching aids are further characterized by a content of 1 wt .-% to 15 wt .-% of a polyvalent carboxylic acid, hydroxycarboxylic acid or Ether carboxylic acid with 3 to 6 carbon atoms in the molecule. Examples of such multivalued Carboxylic acids are malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, Malic acid, tartaric acid, citric acid, diglycolic acid and Carboxymethyloxy succinic acid. Preferred acids are citric acid and Carboxymethylsuccinic acid. Their proportion, based on the bleach activator granules, is preferably 2 to 8% by weight. Polyfunctional carboxylic acids containing amino groups, such as Nitrilotriacetic acid, are unsuitable because they are oxidizable and the bleaching activity to reduce.

Water-soluble, film-forming polymers such as water-soluble cellulose ether, water-soluble starch or water-soluble starch ether as well their mixtures serve.

Examples of cellulose ethers are methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, Methylhydroxyethyl cellulose, ethyl hydroxypropyl cellulose, carboxymethyl cellulose (as  Sodium salt) and methyl carboxymethyl cellulose (Na salt). As a strength comes z. B. Corn starch or depolymerized starch into consideration. Suitable starch ethers are for example carboxymethyl starch, hydroxyethyl starch and methyl starch. As special sodium carboxymethyl cellulose (CMC) has proven suitable from this group.

Homopolymers or copolymers are also suitable as additional granulation aids Carboxylic acids, such as polyacrylic acid, polymethacrylic acid, polymaleic acid, copolymers of Acrylic acid or methacrylic acid with maleic acid and maleic acid with Vinyl methyl ether, these polymeric acids as free acids or preferably as Sodium salts are present. Preferred representatives of this group are sodium polyacrylate and Sodium salts of acrylic acid-maleic acid copolymers with a weight ratio Acrylic acid to maleic acid from 10: 1 to 1: 1, preferably 7: 1 to 2: 1 Compounds generally have molecular weights from 3000 to 150,000, preferably 5000 to 100000.

Sodium silicates with a modulus Na ₂ O: SiO ₂ of 1: 1 to 1: 4, preferably from 1: 1.5 to 1: 3.5 and in particular from 1: 2 to 1: 2.5, can also be used as additional granulation aids .

The content of such additional granulation aid in the granules is preferably not more than 10% by weight, in particular not more than 5% by weight.

The granules can contain small amounts of water, for example up to 3% by weight, preferably less than 2% by weight and particularly preferably less than 1% by weight, contain.

The bleach activator granules according to the invention can be produced by means of conventional Granulating devices are made. It is preferable to proceed in such a way that the Bleach activator or a previously made intimate, dry blend of the bleach activator and the polyvalent carboxylic acid in a pelletizer with an aqueous one Sprayed solution of sugar surfactant. Such an aqueous solution can depend on Processible viscosity contain about 10 wt .-% to 50 wt .-% of the sugar surfactant. Man  can also proceed in such a way that first a dry mixture of all components including the powdered sugar surfactant or a portion thereof produces and this mixture then with water or an aqueous solution sprayed, which contains the rest of the sugar surfactant dissolved. Such a way of working recommends especially when the aqueous solutions of sugar surfactant are so highly viscous be that they spray only poorly and in the mixture to be granulated spread out.

The known discontinuous and continuous ones can be used as granulating devices Mixers can be used. As a fast running mixer with dwell times of the The Schugi® Flexomix has proven to be advantageous for granulation goods of 0.5 to 3 seconds. As a fast-running mixer with retention times of the granulation material from 3 to 30 seconds can be called the Lödige® CB mixer. Typical pelletizers with Long residence times of the granulation material from 1 to 10 minutes are the Lödige® Ploughshare mixer of the KM series. For an optimal granulation result, to connect different mixers in series. So it is preferred to put the liquids in add to a mixer with a short residence time and the granulation in a slower one continue running mixer.

The granulation can also take place under compacting conditions. Come to this especially roller compaction, pelleting and extrusion into question. Roller compactors are e.g. B. from the companies Alexanderwerk® and Bepex®, Pellet presses from Pallmann®, Schlüter® and Kahl® and extruders from Companies Lihotzky®, Werner & Pfleiderer® and Leistritz® are offered. But also Granulating devices from other manufacturers are suitable.

The bulk density of the granules can be increased by a downstream rounding cascade be raised.

Preferred granules according to the invention are those in which 90% of the particles a diameter in the range from 0.1 mm to 5 mm, in particular from 0.2 mm to 3 mm and particularly preferably have from 0.4 mm to 2 mm.  

The average particle size of the granules according to the invention is preferably below of 3 mm and over 300 µm, preferably over 500 µm and particularly preferably over 800 µm.

The granules according to the invention preferably have a bulk density of over 400 g / l, in particular over 500 g / l and particularly preferably over 600 g / l.

Small amounts can also be used during granulation Additives such as dyes or pigments mixed in or via the aqueous Granulation liquid are introduced. Even small amounts of oxidation stable Complexing agents and stabilizers for peroxygen compounds can be found in this Process stage are mixed.

Examples of such stabilizers are salts of polyphosphonic acids, such as 1- Hydroxyethane-1,1-diphosphonate, ethylenediaminetetramethylenephosphonate and diethylene triamine pentamethylene phosphonate, each in the form of the sodium salt. The share of this Additions can be up to 20% by weight, preferably not more than 10% by weight, based on the Amount of granules.

The water content of the granules is then increased to the granulation process less than 3% by weight, preferably less than 2% by weight and in particular less than 1 % By weight reduced. The excess water can be extracted by drying under Heat supply take place, the temperature of the granules expediently 80 ° C. does not exceed and below the melting temperature of the bleach activator and the optionally contained carboxylic acid and the other additional Granulation aid is. Dryers are suitable, the granular structure of the product do not change disadvantageously, for example tray, vacuum or fluidized bed dryers.

It is also possible to use it in detergents or in Washing processes also determine such substances during the granulation process add, which is usually in a very small amount to the detergents in one special mixing process can be mixed separately. These are Additives to those used in the usual detergent preparation, especially for  the hot spray drying, are inactivated or lost, such as Foam inhibitors and fragrances. Customary known foam inhibitors come Defoaming agents, preferably polysiloxanes and mixtures thereof with microfine Silica in question. Examples include polydimethylsiloxane with a content of approx. 1 up to 10% by weight, preferably 2 to 4% by weight, based on the finished granulate. The defoamer can be added in the first mixing stage; you can do that However, defoamers should also be dispersed in the granulating liquid, to avoid this of segregation processes in this case, however, part of the granulating aid should contain.

The granules produced in the manner indicated have a favorable grain spectrum on. Any existing coarse and fine particles can be sieved and after grinding the coarse parts are returned to the process. The granules are good pourable, non-adhesive and are characterized by superior solubility. Already at low washing temperatures, for example from 25 ° C to 40 ° C, they disintegrate very quickly and completely, so that in the presence of Peroxygen compounds have full bleaching power even under such washing conditions is fully available within a short time. They can be used advantageously in washing, bleaching, Use oxidizing and disinfectant agents and keep their good ones Properties also in a mixture with the active ingredients contained in these agents.  

Examples

The given in Table 1 below with their composition Bleach activator granules E1 to E3 were in a 20 l ploughshare mixer from the company Lödige® manufactured. Tetraacetylethylenediamine (TAED) powder was used as the bleach activator used with a grain size in the range of 0.01 mm to 0.8 mm. As a sugar surfactant APG® 600 was used as a 50% aqueous paste from Henkel KGaA. The Citric acid was a fine anhydrous quality from the Jungbunzlauer company with the Designation F0001. The sodium silicate was water glass N55 from Henkel KGaA.

The bleach activator and optionally the citric acid were introduced; granulated was with the APG paste, the silicate solution and water. Then the Drying the granules in a fluidized bed to a water content of less than 1%. The dried granules were sieved between 1.0 and 2.0 mm. For comparison (V) was a granulation with Na carboxymethyl cellulose under otherwise the same Conditions carried out.

The solubility of the products was examined in the so-called L test. In addition, 8 g the granulate in 1000 ml of water with a hardness of 16 °, ie at 30 ° C and with a propeller stirrer at 800 rpm for 1.5 minutes. The unresolved Components were sieved with a sieve with a mesh size of 0.2 mm. The The residue was dried to constant weight and weighed.

Table 1

Composition of the granules and solubility data

It can be seen that the granules according to the invention are significantly better Show solubility behavior as that granulated with the help of carboxymethyl cellulose Comparative product.

Claims (28)

1. Granular bleaching aid containing bleach activators from the class of N-acyl and O-acyl compounds and at least one granulation aid the class of sugar surfactants. 2. Composition according to claim 1, characterized in that the bleach activator Compound is an aliphatic under perhydrolysis conditions Peroxocarboxylic acid with 1 to 10 carbon atoms, in particular 2 to 4 carbon atoms, and / or optionally substituted perbenzoic acid. 3. Composition according to claim 1 or 2, characterized in that the bleach activator multiply acylated alkylenediamine, especially tetraacetylethylenediamine. 4. Agent according to one of claims 1 to 3, characterized in that it as Contains sugar surfactant alkypolyglycoside (s). 5. Composition according to claim 4, characterized in that it with alkyl polyglycoside (s) a degree of glycosidation from 1.0 to 4.0, preferably from 1.0 to 2.0 and contains in particular from 1.1 to 1.4. 6. Composition according to one of claims 1 to 3, characterized in that it contains polyhydroxy fatty acid amide (s) of the formula (I) as sugar surfactant
in the RCO for an aliphatic acyl radical with 6 to 22 carbon atoms, R ¹ for hydrogen, an alkyl or hydroxyalkyl radical with 1 to 4 carbon atoms and [Z] for a glucose, fructose, maltose, lactose, galactose, mannose - or xylose residue. 7. Composition according to claim 6, characterized in that the polyhydroxy fatty acid amide is a C _12-18 -N-methylglucamide (R ¹ = CH ₃ , Z = glucose in formula I). 8. Composition according to one of claims 1 to 7, characterized in that it is 70 wt .-% up to 99% by weight, in particular 85% by weight to 95% by weight bleach activator and 1% by weight contains up to 30 wt .-%, in particular 5 wt .-% to 15 wt .-% sugar surfactant. 9. Composition according to one of claims 1 to 8, characterized in that it additionally contains nonionic surfactant in the form of alkoxylated alcohol, which is derived from C _8-22 alcohols, preferably from C _8-20 alcohols and in particular from C _{12 18} alcohols. 10. Agent according to one of claims 1 to 9, characterized in that it is additionally 1 wt .-% to 10 wt .-%, in particular 2 wt .-% to 8 wt .-% of a polyvalent Carboxylic acid, hydroxycarboxylic acid or ether carboxylic acid with 3 to 6 carbon atoms in Contains molecule. 11. A composition according to claim 10, characterized in that the carboxylic acid is citric acid is. 12. Composition according to one of claims 1 to 11, characterized in that as further Granulation aid sodium silicate, sodium carboxymethyl cellulose, polyacrylic acid or a copolymer of polyacrylic acid with maleic acid in the ratio nis 10: 1 to 1: 1 or their sodium salts is used. 13. Composition according to claim 12, characterized in that the proportion of the further granu gelling aid not more than 10% by weight, in particular not more than 5% by weight is. 14. Composition according to one of claims 1 to 13, characterized in that the Water content up to 3% by weight, especially less than 2% by weight and particularly is preferably less than 1% by weight. 15. Agent according to one of claims 1 to 14, characterized in that an additional Dye or pigment is included.   16. Composition according to one of claims 1 to 15, characterized in that 90% of the Particles have a diameter in the range from 0.1 mm to 5 mm, in particular from Have 0.2 mm to 3 mm and particularly preferably from 0.4 mm to 2 mm. 17. Agent according to one of claims 1 to 16, characterized in that the middle Particle size below 3 mm and over 300 µm, in particular over 500 µm and is particularly preferably over 800 microns. 18. Composition according to one of claims 1 to 17, characterized in that the Bulk weight above 400 g / l, especially above 500 g / l and especially is preferably above 600 g / l. 19. A method for producing an agent according to any one of claims 1 to 18, characterized characterized in that the bleach activator in a pelletizer with a sprayed aqueous solution of the sugar surfactant and granulated. 20. A method for producing an agent according to claim 1 to 18, characterized characterized in that a homogeneous dry mixture of the bleach activator and at least part of the sugar surfactant in a granulating device with water, an aqueous solution containing the rest of the sugar surfactant and / or one sprayed and granulated aqueous solution of further granulation aids. 21. The method according to claim 19 or 20, characterized in that the granulation in a fast running mixer with a residence time of the granulation material of 0.5 up to 3 sec. 22. The method according to claim 19 or 20, characterized in that the granulation in a fast running mixer with a retention time of the granulation material of 3 up to 30 sec. 23. The method according to claim 19 or 20, characterized in that the granulation in a slow-running mixer with a residence time of the granulation material of 1 up to 10 min.   24. The method according to any one of claims 21 to 23, characterized in that several Mixers can be connected in series. 25. The method according to claim 24, characterized in that the mixer different have dwell times. 26. The method according to any one of claims 19 to 25, characterized in that under compacting conditions is granulated 27. The method according to claim 26, characterized in that for compacting Granulation roller compacting, pelletizing or extrusion for use is coming. 28. The method according to claim 27, characterized in that the granules be rounded off after the granulation.