Co-particles, washing and cleaning agents containing co-particles, and uses thereof

Abstract

Coated or uncoated co-particles containing a) 10 to 40 wt% of a cyclic sulfimide, b) 20 to 60 wt% of a bleaching activator selected from the group consisting of tetraacetylethylenediamine, decanoyloxybenzoic acid, or mixtures thereof, c) 0.1 to 5 wt% of an organic acid in the form of a free acid and / or a salt of an organic acid in the form of a partially neutralized form, d) 1 to 15 wt% of polyvinyl alcohol as binder, e) 10 to 25 wt% of a desiccant, e) 10 to 25 wt% of a solvent, and e) 10 to 25 wt% of a solvent. The present invention relates to a composition comprising: a) 0-5 wt% of a water-soluble polymer selected from the group consisting of alkali metal sulfates, alkali metal carbonates, alkaline earth metal sulfates, alkaline earth metal carbonates, alkaline earth metal oxides, alumina, hydrates of these compounds, or a mixture of two or more thereof, f) 0-0.5 wt% of a dye and / or pigment, and g) 0-5 wt% of water, where the percentages relate to the sum of components a) to g), and the sum of components a) to g) is 100%. These co-particles are stable over a longer storage time and contain a component that does not tend to discolor during storage or a component that does not tend to change color in the case of colouring the co-particles.

Description

Technical Field

[0001] The present invention relates to co-particles, washing and cleaning agents for textiles and surfaces and their use for disinfection and washing or cleaning at low temperatures. Background Art

[0002] In order to achieve a bleaching effect, persalts such as perborates and percarbonates are added to washing and cleaning agents. In order to activate these bleaches and obtain a satisfactory bleaching effect when cleaning at temperatures of 60°C and below, these bleaches usually also contain bleach activators and / or bleach catalysts.

[0003] Bleach activators and bleach catalysts are preferably added to detergents and cleaning agents in the form of preformed granules. This is done on the one hand to improve their storage stability and on the other hand to ensure that the trace catalyst is incorporated uniformly into the preparation.

[0004] Sulfonyl imides and their use in detergents and cleaners have been described in the patent literature.

[0005] DE69104405T2 (corresponding to EP0453003B1) discloses a bleaching composition for detergents, which comprises 1-60 wt% of a peroxy compound, 0.05-10 wt% of a selected sulfonimide and 0.5-50 wt% of a surfactant.

[0006] In DE69104751T2 (corresponding to EP0446982 B1), bleaching compositions are described which contain 1-60 wt % of a peroxy compound, 0.05-10 wt % of a selected sulfonyl imide and 0.1-40 wt % of a bleach precursor which reacts with peroxide anions. From this publication it is known that bleaching compositions are effective already at low temperatures. In the examples, the combination of sulfonyl imide with the bleach activator tetraacetylethylenediamine (TAED) and perborate and their effect on textiles produced with tea stains are described. The bleach is applied at a temperature of 40°C.

[0007] In SOFW Journal 140 9-2014, G. Reinhardt, M. Best, I. Herrgen and M. Ladwig describe sulfonyl imides and quaternary iminium salts as novel bleaching catalysts. These compounds serve as precursors for dioxirane, oxaziridine and oxaziridinium salts, which in combination with peroxide compounds achieve excellent bleaching effects even at low concentrations. In this publication, it has been proposed to use sulfonyl imides and quaternary iminium salts in granular form with other bleach activators, such as TAED or sodium nonanoyloxybenzenesulfonate (NOBS), and to use film-forming binders. However, such granules are often not sufficiently stable in storage.

[0008] EP 3345989 A1 discloses granules which contain sulfonyl imide or quaternary iminium salt and an acid which is solid at 25° C. as a stabilizer. These granules can be used for formulating detergents and cleaners which can be used at temperatures below 35° C.

[0009] Cogranules containing selected bleach activators and sulfonyl imide are known from DE 10 20 20 001 458 A1. These are cogranules coated with cellulose ethers, which contain cyclic sulfonyl imide, selected bleach activators such as tetraacetylethylenediamine (TAED) and cellulose ether as binder. These cogranules can be produced particularly well by wet granulation.

[0010] Tests have shown that cellulose ethers (e.g. carboxymethylcellulose) as binders in combination with bleach activators, sulfonyl imides and desiccants (e.g. calcium sulfate) do not result in stable granules. In this case, the addition of desiccants appears to be problematic. In addition, problems arise when dosing powder mixtures of desiccant and sulfonyl imide, since these mixtures adhere to pipes and remain there. In addition, difficulties are encountered when coloring granules containing cellulose ethers as binders. Finally, when stored in detergent and cleaning agent preparations, the small particles of the granules can only be coated inadequately and turn from yellow to brown.

[0011] Surprisingly, it was found that these problems could be solved by replacing the cellulose ether binder with polyvinyl alcohol.

[0012] In EP3345989A1, the use of non-acidic binders is generally proposed, wherein polyvinyl alcohol is also mentioned as a binder. In the examples of this document, microcrystalline cellulose is used as a binder in addition to polyvinyl alcohol. However, polyvinyl alcohol does not allow wet granulation. Surprisingly, it was found that stable co-granules can be produced by wet granulation using polyvinyl alcohol as the only binder. In addition, all granules described in EP3345989A1 show a slight yellowish color after storage. The co-granules of the present invention do not show color changes even after long-term storage. Summary of the invention

[0013] Based on this prior art, it was an object of the present invention to provide co-granules which are storage-stable over a prolonged period and which contain large amounts of highly active bleach activators, bleach catalysts and desiccants and which do not discolor during storage or, in the case of pigmented co-granules, do not change color.

[0014] It is a further object of the present invention to provide additional stable co-granules which contain highly active bleach activators and bleach catalysts and which do not decompose back into their powdery components after wet granulation.

[0015] These objects are solved by providing a coated or uncoated co-particle comprising:

[0016] a) 10-40 wt% of a cyclic sulfonimide,

[0017] b) 20-60 wt% of a bleach activator selected from tetraacetylethylenediamine, decanoyloxybenzoic acid, or a mixture thereof,

[0018] c) 0.1-5 wt% of an organic acid in the form of a free acid and / or a salt thereof,

[0019] d) 1-15 wt% polyvinyl alcohol as a binder,

[0020] e) 10-25 wt% of a desiccant selected from alkali metal sulfates, alkali metal carbonates, alkaline earth metal sulfates, alkaline earth metal carbonates, alkaline earth metal oxides, aluminum oxide, hydrates of these compounds, or a mixture of two or more thereof,

[0021] f) 0-0.5 wt% of dyes and / or pigments, and

[0022] g) 0-5 wt% of water,

[0023] The percentages stated therein relate to the sum of components a) to g), and the sum of components a) to g) is 100%.

[0024] Furthermore, the invention relates to a washing and cleaning agent comprising:

[0025] A) a bleaching agent selected from perborates, percarbonates, or mixtures thereof, and

[0026] B) Co-particles as described above.

[0027] In the washing and cleaning agents according to the invention, selected percompounds are used as component A). These percompounds are perborates, percarbonates or mixtures thereof.

[0028] Preferably, the corresponding sodium salts of perborates and percarbonates are used as component A), in particular sodium percarbonate.

[0029] The amount of component A) in the detergent and cleaning agent of the invention is generally 5 to 30% by weight, based on the total amount of the detergent and cleaning composition. The preferred amount of component A) is 5 to 20% by weight, in particular 8 to 12% by weight.

[0030] Co-particles with selected components are used as component B) in the washing and cleaning agents according to the invention. These co-particles are preferably coated with a coating of cellulose ethers. These co-particles contain the above-defined components a) to g) as constituents in selected amounts.

[0031] The amount of component B) in the detergent and cleaner of the invention is generally 0.05-10 wt %, based on the total amount of the detergent and cleaner. The preferred amount of component B) is 0.2-8 wt %, in particular 0.5-6 wt %, particularly preferably 0.5-3 wt %, most preferably 0.5-2 wt %.

[0032] The cyclic sulfonyl imides used according to the invention as component a) are cyclic compounds which have the structural unit =N-SO2- in the molecule.

[0033] Cyclic sulfonylimides preferably used as component a) are compounds of the following formula I:

[0034]

[0035] wherein R1 and R2 are independently hydrogen, C1-C6 alkyl or phenyl.

[0036] Among the compounds of formula I, particular preference is given to those wherein R1 is hydrogen and R2 is C1-C6 alkyl (especially methyl or ethyl) or phenyl.

[0037] A highly preferred sulfonyl imide of formula (I) is 3-methyl-1,2-benzisothiazole-1,1-dioxide.

[0038] If one of the radicals in this specification is a C1-C6 alkyl radical, the alkyl radical may be branched or unbranched. The alkyl radical contains 1 to 6 carbon atoms. Examples of alkyl radicals are: methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, pentyl or n-hexyl.

[0039] The amount of component a) in the co-granule of the present invention is 10-40 wt % based on the total amount of components a) to g) in the co-granule. The preferred amount of component a) is 25-35 wt %, in particular 27-33 wt %.

[0040] According to the invention, tetraacetylethylenediamine or decanoyloxybenzoic acid is used as bleach activator b). It is also possible to use mixtures thereof. A preferred component b) is tetraacetylethylenediamine.

[0041] Based on the total amount of components a) to g) in the co-granules, the amount of component b) in the co-granules of the present invention is 20-60 wt%. The preferred amount of component b) is 20-50 wt%, especially 25-45 wt%, most preferably 30-40 wt%.

[0042] Both monomeric and polymeric acids can be used as organic acids c) either in free acid form or in salt form. Therefore, in the context of the present invention, the term "organic acid" includes organic acids in free form and in salt form.

[0043] Preferred counterions for the organic acid are alkali metal ions, especially sodium ions.

[0044] Preferred organic acids c) are citric acid, ascorbic acid, oxalic acid, adipic acid, sebacic acid, malonic acid, succinic acid, glutaric acid, malic acid, tartaric acid, lactic acid, maleic acid, fumaric acid, sugar acids, aminocarboxylic acids, C8-C 22 Fatty acids, and mixtures thereof. Particularly preferred organic acids are oxalic acid, ascorbic acid, citric acid and C8-C 22 Fatty acids such as lauric acid, myristic acid, palmitic acid or stearic acid.

[0045] Preferred polymeric organic acids c) are polymers of acrylic acid or methacrylic acid, copolymers of acrylic acid and methacrylic acid, or copolymers of acrylic acid and / or methacrylic acid with maleic acid.

[0046] Particularly preferred components c) are citric acid, ascorbic acid and oxalic acid or alkali metal salts of these acids, most preferably citric acid or an alkali metal salt thereof.

[0047] The amount of component c) in the co-granule of the present invention is 0.1-5 wt % based on the total amount of components a) to g) in the co-granule. The preferred amount of component c) is 0.3-0.5 wt %, in particular 0.39-0.41 wt %.

[0048] According to the invention, polyvinyl alcohol is used as binder d). It is also possible to use mixtures of polyvinyl alcohols.

[0049] To characterize polyvinyl alcohol, the viscosity of a 4% aqueous solution at 25°C is usually given (in Viscometer measurement) rather than molecular weight. Particularly suitable polyvinyl alcohols d) have a viscosity in aqueous solution at 25° C. of 2 to 60 mPa.s, in particular 5 to 10 mPa.s.

[0050] Polyvinyl alcohol is usually produced by saponification of polyvinyl acetate. Particularly preferred polyvinyl alcohols have a saponification degree of 70-100 mol %, in particular 80-90 mol %.

[0051] Further suitable polyvinyl alcohols d) may be hydrophobically or hydrophilically modified in some way.

[0052] The amount of component d) in the co-particles of the present invention is 1-15 wt % based on the total amount of components a) to g) in the co-particles. The preferred amount of component d) is 1-5 wt %, especially 2-4 wt %, most preferably 3-4 wt %.

[0053] As desiccant e) a compound selected from the group consisting of alkali metal sulfates, alkali metal carbonates, alkaline earth metal sulfates, alkaline earth metal carbonates, alkaline earth metal oxides, aluminum oxide, and / or hydrates of these compounds is used. Mixtures of two or more thereof may also be used.

[0054] Preferably, these compounds are used in the form of hydrates, in particular dihydrates.

[0055] The desiccant e) used preferably is selected from sodium sulfate, magnesium sulfate, calcium sulfate, hydrates of these compounds, or mixtures of two or three thereof.

[0056] Calcium sulfate, in particular calcium sulfate dihydrate, is particularly preferred as desiccant e).

[0057] The amount of component e) in the co-granules of the present invention is 10-25 wt % based on the total amount of components a) to g) in the co-granules. The preferred amount of component e) is 15-20 wt %, in particular 15-16 wt %.

[0058] In addition to the abovementioned components a) to e), the cogranules according to the invention may also contain dyes and / or pigments f) and / or water g) as further constituents.

[0059] Dyes are coloring compounds that are soluble in solvents such as water. The solubility herein refers to the solubility of at least 1 g of dye in 1 L of solvent at 25°C.

[0060] Pigments are coloring compounds that are insoluble in solvents (such as water), ie, the solubility in 1 L of solvent at 25°C is less than 1 g of pigment.

[0061] The proportion of component f) is 0-0.5% by weight, preferably 0-0.1% by weight, in particular 0.03-0.07% by weight, based on the total amount of components a) to g) in the co-particle.

[0062] The proportion of component g) is 0-5 wt %, preferably 0-1 wt %, based on the total amount of components a) to g) in the co-particle.

[0063] In the co-particles according to the invention no further ingredients are present besides components a) to g) and the optional coating.

[0064] Preferably, the co-particles according to the invention do not comprise any further ingredients besides components a) to e), optionally f) and / or the optional coating.

[0065] The co-particles according to the invention may have a coating (so-called coating or protective layer), which further increases the storage stability. In addition, the co-particles may be colored with it; however, dyes and / or pigments may also be formulated with components a) to e).

[0066] In the simplest embodiment of the invention, the co-particles according to the invention have no coating.

[0067] In a preferred embodiment of the present invention, the coparticles according to the invention have a coating.

[0068] Preferred substances for the coating are organic compounds with film-forming properties, for example fatty acids, waxes, polyvinyl alcohol, acetalized polyvinyl alcohol, polyvinyl pyrrolidone, polyalkylene glycols, cellulose derivatives, polymeric organic acids, for example polymers of acrylic acid or methacrylic acid and copolymers of acrylic acid and methacrylic acid, or copolymers of acrylic acid and / or methacrylic acid with other comonomers, for example maleic acid.

[0069] Optionally, the coating may additionally contain small amounts of water-soluble dyes or water-insoluble pigments.

[0070] Suitable fatty acids for coating have 8 to 22 carbon atoms. These are, for example, lauric acid, myristic acid, palmitic acid, stearic acid, or mixtures thereof. Organic polymers containing acid groups are also preferred.

[0071] The proportion of the coating in the total amount of the co-particle can vary within a wide range, but should not exceed 30 wt %, based on the total mass of the coated co-particle. Preferably, the proportion of the coating is 5-20 wt %, based on the total mass of the coated co-particle.

[0072] Preferably, the coating of the co-particles of the invention is formed from or contains a cellulose ether.

[0073] Cellulose ethers preferably used as coating components are cellulose derivatives formed by partial or complete substitution of hydrogen atoms of hydroxyl groups in cellulose. The type of substituents, the number of substituted hydroxyl groups and their distribution in the cellulose ethers used according to the invention can vary within wide ranges.

[0074] Preferably, water-soluble cellulose ethers are used. This means a solubility of at least 1 g of cellulose ether in 1 L of water at 25°C.

[0075] Examples of cellulose ethers which can be used as coating component are carboxymethylcellulose (CMC), methylcellulose (MC), ethylcellulose (EC), hydroxyethylcellulose (HEC) or hydroxypropylcellulose (HPC).

[0076] Further examples of cellulose ethers which can be used as coating components are cellulose mixed ethers, such as methylethylcellulose (MEC), hydroxyethylmethylcellulose (HEMC), hydroxypropylmethylcellulose (HPMC), ethylhydroxyethylcellulose or carboxymethylhydroxyethylcellulose.

[0077] Preferred coating components are HEMC and HPMC.

[0078] Optionally, the coating may also contain a small amount of additives, such as organic dyes or pigments, and / or other film-forming polymers. However, the total proportion of such additives and / or other film-forming polymers in the total mass of the coating should not exceed 10 wt%, preferably 5 wt%. Preferably, the coating does not contain any additives, i.e., does not contain dyes or pigments, nor other film-forming polymers.

[0079] In another embodiment, the co-particles of the present invention may have two or more coatings, at least one of which consists of a cellulose ether. Thus, the co-particles of the present invention may have a first coating, preferably a coating of hydroxypropylmethylcellulose (HPMC) and / or hydroxyethylmethylcellulose (HEMC), and a second protective layer, preferably a coating of a fatty acid or a mixture of fatty acids, most preferably stearic acid and palmitic acid.

[0080] Co-particles coated with cellulose ether are particularly preferred in terms of their properties and storage stability, and consist of 25-35 wt% of component a), 30-40 wt% of component b), 0.3-0.5 wt% of component c), 2-4 wt% of component d), 15-20 wt% of component e), 0.03-0.07 wt% of component f) and 0-1 wt% of component g), based on the total mass of components a) to g).

[0081] Other particularly preferred co-particles with regard to their properties and storage stability are coated with 5-20 wt % of a cellulose mixed ether, in particular with methylethylcellulose (MEC), hydroxyethylmethylcellulose (HEMC), hydroxypropylmethylcellulose (HPMC), ethylhydroxyethylcellulose or carboxymethylhydroxyethylcellulose.

[0082] In principle, various granulation processes can be used to produce the cogranules according to the invention.

[0083] The processes of bulk granulation and degradation granulation can be used. By degradation granulation, it is understood by those skilled in the art that the powder is aggregated by moisture or pressure and then decomposed by cutting into the desired particle size. Decomposition granulation can be carried out in the form of wet or dry granulation.

[0084] In a preferred wet granulation process, a dough-like homogeneous mass is produced from the individual components and the granulation liquid, which is then broken down into granules. Polyvinyl alcohol dissolved in water is used as the granulation liquid. The aqueous solution generally has a polyvinyl alcohol content of 10-30 wt %. The polyvinyl alcohol content is preferably 15-25 wt %. These solutions can be sprayed into a granulator. The produced basic material is then crushed to form co-granules using aggregates known to those skilled in the art. Open-hole turntable granules, pressed granules and shaken granules can be distinguished. Finally, the solvent of the granulation liquid can be removed by heat treatment.

[0085] In dry granulation, co-granules are produced by compacting powders using pressure. For example, a roller compactor can be used for this purpose. The compacted material produced is then further reduced to the desired size.

[0086] In a stacking granulation process (which is also possible), co-granules are produced directly from powder particles. For example, the powder particles can be swirled in a gas stream in a fluidized bed and sprayed with a granulating liquid. The powder particles form agglomerates which are dried by the gas stream. Alternatively, a high-speed mixer can be used to produce the co-granules. For this purpose, the components of the co-granules are introduced in powder form at the beginning of the process. The granulating liquid is added in the process. The high shear forces and friction on the walls of the high-speed mixer produce uniform co-granules.

[0087] The fine fraction and, if necessary, the coarse fraction can be separated from the produced co-granules by sieving. Preferably, the coarse fraction is returned to the granulator and the fine fraction to the compactor.

[0088] In a separate step, for example in a fluidized bed mixer, the cogranules produced in this way are coated.

[0089] The co-particles according to the invention are primarily characterized by their chemical composition. However, it has been shown that the effect of these co-particles can also be advantageously influenced by controlling physical parameters such as the particle size of the selected sieve fraction, the fines content and the bleach catalyst and bleach activator content.

[0090] For this reason, preferred co-granules according to the invention have an average particle size of between 0.1 and 1.6 mm, preferably between 0.2 and 1.5 mm, particularly preferably between 0.4 and 1.2 mm, measured in each case by sieve analysis.

[0091] The co-particles according to the invention have a water content of less than 5 wt %, in particular less than 2 wt % (measured according to Karl Fischer), based on the total amount of the sum of components a) to g) in the co-particle.

[0092] The co-granules are used for producing the detergents or cleaning agents according to the invention.

[0093] The washing and cleaning agents of the invention may be present in the form of solids such as granules, powders or tablets, or in the form of liquids or pastes in bags and multi-chamber bottles.

[0094] Preferably, the washing and cleaning agents according to the invention are solids in the form of powders or tablets, in particular powders.

[0095] Besides components A) and B), the washing and cleaning compositions according to the invention can in principle comprise all known ingredients customary in compositions of this type.

[0096] The washing and cleaning compositions of the invention, in particular compositions for cleaning dishes, may contain, inter alia, builders, enzymes, alkali metal ion carriers, surfactants, pH regulators, organic solvents and other auxiliary substances, such as glass corrosion inhibitors, silver corrosion inhibitors and foam regulators.

[0097] Preferred washing and cleaning agents are in powder form and contain:

[0098] i) 15-65 wt%, preferably 20-60 wt% of a water-soluble builder component,

[0099] ii) 5 to 20 wt%, preferably 8 to 15 wt% of component A),

[0100] iii) 0.5-6 wt% of co-particles B), and

[0101] iv) 0 to 65, preferably 0 to 50, % by weight of further additives, in particular enzymes, alkali metal ion carriers, surfactants, pH regulators, organic solvents or other auxiliaries, such as glass corrosion inhibitors, silver corrosion inhibitors and foam regulators, in each case based on the total weight of the washing and cleaning agent.

[0102] This agent is particularly low alkaline, ie the pH value of a 1 wt % solution thereof is 8-11.5, preferably 9-11.

[0103] As water-soluble builder components in the washing and cleaning compositions of the present invention, all builders which are usually used in such compositions can be considered in principle. Examples of these are alkali metal phosphates, which can be present in the form of their alkaline, neutral or acidic sodium or potassium salts, in particular trisodium phosphate, tetrasodium diphosphate, disodium dihydrogen diphosphate, pentasodium triphosphate, so-called sodium hexametaphosphate and the corresponding potassium salt or a mixture of sodium and potassium salts. Based on the total composition, their amount can be about 15-65wt%, preferably 20-60wt%. In addition to polyphosphonates and phosphonic acid alkyl carboxylates, other possible water-soluble builder components are organic polymers of the polycarboxylate type, for example, of natural or synthetic origin, which act as builders, particularly in hard water areas.

[0104] Examples include polyacrylic acids, copolymers of maleic anhydride and acrylic acid and the sodium salts of these polymeric acids. Commercially available products are, for example, BASF's CP 5, CP 10 and PA 30. Polymers of natural origin that can be used as builders include oxidized starch and polyamino acids, such as polyglutamic acid or polyaspartic acid. Other possible water-soluble builder components are naturally occurring hydroxycarbonic acids, such as monohydroxysuccinic acid, dihydroxysuccinic acid, α-hydroxypropionic acid and gluconic acid. Preferred organic water-soluble builder components include citrates, in particular sodium citrate. Suitable sodium citrate is anhydrous trisodium citrate, preferably trisodium citrate dihydrate. Trisodium citrate dihydrate can be used in the form of a fine or coarse crystalline powder. According to the pH value finally set in the washing and cleaning compositions of the present invention, in particular in compositions for cleaning tableware, an acid corresponding to the builder salt may also be present. A particularly preferred builder component in phosphorus-free preparations is methyl glycine diacetate (MDGA, for example M, BASF), L-glutamic acid, N,N-(biscarboxymethyl)-tetrasodium salt (GLDA, DL, AkzoNobel), sodium polyaspartate ( Lanxess) or a salt of iminodisuccinic acid ( Lanxess).

[0105] Enzymes that may be optionally included in the washing and cleaning compositions of the present invention include proteases, amylases, pullulanases, cutinases and / or lipases, for example proteases such as BLAP TM Optimase TM Opticlean TM Maxacal TM 、Maxapem TM 、Durazym TM 、Purafect TM OxP、EXCELLENZ TM P 1250, Esperase TM and / or Savinase TM , amylase such as Termamyl TM 、Amylase-LT TM , Maxamyl TM Duramyl TM , and / or lipase such as Lipolase TM 、Lipomax TM 、Lumafast TM and / or Lipozyme TM The enzymes used may be adsorbed on a carrier and / or embedded in an encapsulating material to protect them from premature inactivation. Their content in the washing and cleaning compositions of the present invention is generally 0-10 wt %, preferably 0.05-5 wt %, wherein enzymes stabilized against oxidative degradation are particularly preferred.

[0106] Preferably, the washing and cleaning compositions according to the invention contain conventional alkali metal ion carriers, such as alkali metal silicates, alkali metal carbonates and / or alkali metal bicarbonates. Commonly used alkali metal ion carriers include carbonates, bicarbonates and alkali metal silicates having a molar ratio SiO2 / M2O (M=alkali metal atom) of 1:1 to 2.5:1. The content of alkali metal silicates may be up to 40% by weight, in particular 3 to 30% by weight, based on the total weight of the washing and cleaning composition. The alkali metal ion carrier system preferably used in the washing and cleaning compositions according to the invention is a mixture of carbonates and bicarbonates, preferably a mixture of sodium carbonate and sodium bicarbonate, which may be present in an amount of up to 50% by weight, preferably 5 to 40% by weight.

[0107] In another preferred embodiment of the present invention, the washing and cleaning compositions of the present invention contain 20-60 wt% of water-soluble organic builders, especially alkali metal citrates, 3-20 wt% of alkali metal carbonates and 3-40 wt% of alkali metal disilicates.

[0108] Surfactants (especially anionic surfactants, zwitterionic surfactants and preferably low-foaming nonionic surfactants) can also be added to the washing and cleaning compositions according to the invention for improving the removal of fatty soils, as wetting agents and optionally as granulation aids for the production of these compositions. Their amount can be up to 20% by weight, preferably up to 10% by weight, particularly preferably 0.5 to 5% by weight, in each case based on the total weight of the washing and cleaning agent.

[0109] Very low-foaming compounds are generally used. These preferably include C 2+ compounds having up to 8 mol of each ethylene oxide and propylene oxide unit in the molecule. 12 -C 18 However, other known low-foaming nonionic surfactants may also be used, such as C 606 polyols having up to 8 mol of ethylene oxide and butylene oxide units in the molecule. 12 -C 18 Alkyl polyethylene glycol polytetramethylene glycol ethers, capped alkyl polyalkylene glycol mixed ethers, and foaming and ecologically attractive C8-C 14 Alkyl polyglucosides and / or C having 3-8 ethylene oxide units in the molecule 12 -C 14 Also suitable are surfactants from the glucamide family, such as alkyl N-methyl glucamide, wherein the alkyl portion is preferably derived from a carbon chain length of C6-C 14Sometimes it is advantageous to use the surfactants in the form of a mixture, for example a combination of alkyl polyglucosides with fatty alcohol ethoxylates or a combination of glucamide with alkyl polyglucosides. The presence of amine oxides, betaines and ethoxylated alkylamines is also possible.

[0110] To set the desired pH value which does not result automatically from the mixture of the other components, the washing and cleaning compositions according to the invention may contain system-compatible and environmentally compatible acids, in particular citric acid, acetic acid, tartaric acid, malic acid, lactic acid, glycolic acid, succinic acid, glutaric acid and / or adipic acid, but also mineral acids, in particular sulfuric acid or alkali metal hydrogensulfates, or bases, in particular ammonium or alkali metal hydroxides. The content of such pH regulators in the washing and cleaning compositions according to the invention is preferably not more than 10% by weight, particularly preferably from 0.5 to 6% by weight, in each case based on the total weight of the composition.

[0111] Organic solvents that can be used in the washing and cleaning compositions of the present invention include alcohols having 1 to 4 carbon atoms (especially methanol, ethanol, isopropanol and tert-butyl alcohol), diols having 2 to 4 C atoms (especially ethylene glycol and propylene glycol), and mixtures thereof, and ethers that can be derived from the above compounds. The content of such water-miscible solvents in the washing and cleaning compositions of the present invention is preferably not more than 20 wt%, particularly preferably 1 to 15 wt%.

[0112] If the washing and cleaning compositions of the present invention foam excessively during use (for example in the presence of anionic surfactants), up to 6 wt %, preferably about 0.5-4 wt %, of a foam inhibitor may be added thereto, preferably selected from silicone oils, mixtures of silicone oils and hydrophobized silica, paraffins, paraffin-alcohol combinations, hydrophobized silica, bisfatty acid amides and other known commercially available defoamers.

[0113] The washing and cleaning compositions according to the invention may contain as additional ingredients, for example chelating agents, electrolytes, additional peroxygen activators, colorants or fragrances, such as perfume oils, known in the art for use in such compositions.

[0114] The production of the solid or pulverulent washing and cleaning compositions according to the invention presents no difficulties and can in principle be carried out in a known manner, for example by spray drying or granulation, wherein, if necessary, the peroxygen compound A) and the cogranules B) are subsequently added separately.

[0115] The washing and cleaning compositions according to the invention in the form of aqueous solutions or solutions containing other customary solvents can be produced particularly advantageously by simple mixing of the individual components, which can be added in substance or in the form of solutions in an automatic mixer.

[0116] The washing and cleaning compositions according to the invention are preferably in the form of powdered, granular or tableted preparations which can be produced in a manner known per se, for example by mixing, granulating, rolling and / or by spray drying the heat-loadable components and admixing the more sensitive components, which include in particular enzymes, bleaches and bleach catalysts.

[0117] The washing and cleaning agents of the invention can be used for hand washing as well as for domestic washing machines and commercial washing machines. They can be added manually or by a suitable dosing device. The application concentration in the cleaning liquid is usually about 1-8 g / l, preferably 2-5 g / l.

[0118] When carrying out a process for washing textiles or cleaning surfaces, the textiles or surfaces are exposed to a wash liquor which is produced by adding a washing and cleaning agent containing the above-mentioned components A) and B) to water.

[0119] The washing and cleaning compositions of the present invention containing components A) and B) can be advantageously used at low temperatures and show excellent washing and cleaning results at temperatures of 40° C. or lower, preferably lower than 30° C., most preferably lower than 25° C. In addition, these washing and cleaning agents also have an excellent bactericidal effect at low temperatures. These washing and cleaning agents significantly reduce the number of bacteria and yeasts on substrates treated with these washing and cleaning agents.

[0120] The invention also relates to the use of a washing or cleaning agent comprising the above-mentioned components A) and B) for disinfecting textiles or surfaces.

[0121] Finally, the present invention relates to the use of the above-described washing or cleaning composition for washing textiles or cleaning surfaces, in particular at temperatures of 40° C. and below. Example

[0122] The following examples are intended to illustrate the present invention without limiting the present invention.

[0123] Examples 1-5: Production of coated co-particles

[0124] The production process of the co-granules in Examples 1-4 is as follows: a binder solution of water, polyvinyl alcohol and citric acid is homogenized for two hours. Subsequently, the sulfonimide, bleach activator and desiccant (Examples 1 and 2) or the sulfonimide, bleach activator, desiccant and dye (Examples 3, 4 and 5) are added to an Eirich EL01 intensive mixer, sprayed with the binder solution and processed into granules. The granules are dried at 60° C. for 40 minutes in a Retsch TG 200 fast dryer and then sieved on a Retsch AS200 vibrating screen. The fraction of 400-1200 μm is separated and sieved. Subsequently, the fraction is coated in a fluidized bed coating device from Glatt. The amounts and components of the compositions used to produce the granules in Examples 1-4 are shown in Table 1 below.

[0125] The production process of the co-granules of Example 5 is as follows: a binder solution of water, polyvinyl alcohol, citric acid and dye is produced by dissolving the components. Subsequently, the sulfonimide, bleach activator and desiccant are added to an Eirich EL01 intensive mixer and premixed. The binder solution is added manually within four minutes and then mixed for two minutes. The resulting granules are dried at 60°C for 45 minutes in a RetschTG200 fast dryer and then sieved on a RetschAS200 vibrating screen. The fraction of 400-1200 μm is separated and sieved. Subsequently, the fraction is coated in a fluidized bed coating device from Glatt. The amount and components of the composition used to produce the granules of Example 5 are shown in Table 1 below.

[0126] Table 1: Materials used to produce the co-granules of Examples 1-5

[0127]

[0128] 1) In Examples 1 and 3, the product Solvadis EP 05 from Solvadis was used; in Examples 2 and 4, the product Selvol E205 from Sekisui was used; in Example 5, the product Poval 6-88 from Kuraray was used

[0129] 2) Liquitint AMC from Milliken in Examples 3 and 4; Cosmenyl Carmin OC 100 from Heubach in Example 5

[0130] Stable co-granules can be produced from the formulations of Examples 1-5 by wet granulation.

[0131] The co-granules produced in Examples 1-5 were then coated in a fluidized bed coating apparatus from Glatt. The fraction in the fluidized bed was treated with 0.025 wt% of MH 50G4 (methyl hydroxyethyl cellulose) aqueous solution was applied for 4 hours.

[0132] Examples 6 and 7: Production of Uncoated Co-Particles

[0133] For the production of the co-particles of Example 6, the procedure described for the production of the co-particles of Examples 1-4 was followed, but the coating of the co-particles of Example 6 was omitted.

[0134] For the production of the co-particles of Example 7, the procedure was the same as described for the production of the co-particles of Example 5, but the coating of the co-particles of Example 7 was omitted.

[0135] The amounts and components of the compositions used to produce the granules of Examples 6 and 7 are shown in Table 2 below.

[0136] Table 2: Materials used to produce the co-granules of Examples 6 and 7

[0137]

[0138] 3) For example 6, the product Selvol E205 from Sekisui was used; for example 7, the product Poval 6-88 from Kuraray was used.

[0139] 4) For Example 6, Liquitint AMC from Milliken was used; for Example 7, Cosmenyl Carmin OC from Heubach was used.

[0140] Stable co-granules can be produced from the formulations of Examples 6 and 7 by wet granulation.

[0141] Application example - storage test

[0142] Example A1: Storage test of the co-granules of Examples 1-4

[0143] To test the chemical and physical stability of the coated white and pink co-particles of Examples 1-4, a commercially available For this purpose, 3 wt % of these co-particles were introduced into The mixture was transferred to a glass bottle and stored at 40°C for three months with the lid closed. The co-granules were then visually assessed for discoloration.

[0144] It was found that the co-granules of Examples 1 to 4 did not change color during storage. These co-granules were stable in shape and color and did not fall apart.

[0145] Example A2: Storage test of the co-granules of Example 5

[0146] In order to test the chemical and physical stability of the coated pink co-particles of Example 5, a commercially available For this purpose, 3 wt % of these co-particles were introduced into The mixture was transferred to a glass bottle and stored at 40°C with the lid closed for 48 hours. The co-granules were then visually assessed for discoloration.

[0147] It was found that the co-granules of Example 5 did not change color during storage. These co-granules were stable in shape and color and did not fall apart.

[0148] Example A3: Failure test of the co-particles of Example 5

[0149] 0.67 g of the co-granules of Example 5 were weighed into a glass bottle. The contents of the bottle were sprayed with 0.2 g of water. The damp granules were mixed using a glass rod and stored in a drying cabinet at 40° C. for 48 hours. The co-granules were then visually assessed to see whether they had changed color.

[0150] The co-granules in the bottle showed slight discoloration.

[0151] Application example - washing test

[0152] Examples B1-B4

[0153] The BC-4 curry staining lini test was carried out with the co-granules of Examples 1, 2, 5 and 6 at a wash temperature of 40°C. A 200 ml beaker was filled with a BC-4 rag from CFT BV (Centre for Test Materials) soiled with curry. 200 ml of water with a water hardness of 15 dH and the powder mixture were then added to give a detergent concentration of 5 g / L. The amounts and compositions of the individual powder mixtures are shown in Table 3 below. After sealing, the beaker was shaken in a water bath at 40°C for 30 minutes. After drying, the pore size was measured with an Elrepho reflectometer (Elrepho 450, Datacolor, XLAV, The difference in reflectance between the unwashed sample and the washed sample at λ=457nm is ΔR. The results are also shown in Table 3.

[0154] Table 3: Laundry Detergent Formulations and Results

[0155]

[0156] All the co-particles used showed comparable bleaching performance on curry as a hydrophobic soil.

Claims

1. Coated or uncoated co-particles containing: a) 10-40 wt% of a cyclic sulfonimide, b) 20-60 wt% of a bleach activator selected from tetraacetylethylenediamine, decanoyloxybenzoic acid, or a mixture thereof, c) 0.1 to 5 wt % of an organic acid in free acid form and / or a salt of an organic acid in partially neutralized form, d) 1-15 wt% polyvinyl alcohol as a binder, e) 10-25 wt % of a desiccant selected from the group consisting of alkali metal sulfates, alkali metal carbonates, alkaline earth metal sulfates, alkaline earth metal carbonates, alkaline earth metal oxides, aluminum oxide, hydrates of these compounds, or a mixture of two or more thereof, f) 0-0.5 wt% of dyes and / or pigments, and g) 0-5 wt% of water, The percentages stated therein relate to the sum of components a) to g), and the sum of components a) to g) is 100%.

2. The co-particle according to claim 1, characterized in that Tetraacetylethylenediamine was used as bleach activator b).

3. The co-particle according to any one of claims 1-2, characterized in that The cyclic sulfonyl imide a) is a compound of the following formula I: wherein R1 and R2 are independently hydrogen, C1-C6 alkyl or phenyl.

4. The co-particle according to claim 3, characterized in that R1 is hydrogen, and R2 is C1-C6 alkyl or phenyl.

5. The co-particle according to any one of claims 1 to 4, characterized in that The binder d) is polyvinyl alcohol with a saponification degree of 70-10 mol %, and a viscosity of 2-60 mPa.s as a 4% aqueous solution at 25°C. Viscometer measurement.

6. The co-particle according to any one of claims 1 to 5, characterized in that The desiccant e) is selected from sodium sulfate, magnesium sulfate, calcium sulfate, hydrates of these compounds, or a mixture of two or three thereof.

7. The co-particle according to claim 6, characterized in that The desiccant e) is calcium sulfate dihydrate.

8. The co-particle according to any one of claims 1 to 7, characterized in that The organic acid c) is citric acid and / or one of its alkali metal salts.

9. The co-particle according to any one of claims 1 to 8, characterized in that In addition to the components a) to e), dyes and / or pigments f) are present.

10. The co-particle according to any one of claims 1 to 9, characterized in that The amount of component a) is 25-35 wt%, the amount of component b) is 30-40 wt%, the amount of component c) is 0.3-0.5 wt%, the amount of component d) is 2-4 wt%, the amount of component e) is 15-20 wt%, the amount of component f) is 0.03-0.07 wt%, and the amount of component g) is 0-1 wt%.

11. The co-particle according to any one of claims 1 to 10, characterized in that The co-particles are preferably coated with an organic compound having film-forming properties, in particular a cellulose ether, most preferably hydroxyethyl methylcellulose or hydroxypropyl methylcellulose.

12. Washing and cleaning agents containing: A) a bleaching agent selected from the group consisting of perborates, percarbonates, or mixtures thereof, and B) The co-particle according to any one of claims 1 to 11.

13. The washing and cleaning agent according to claim 12, characterized in that The bleaching agent A) is sodium percarbonate.

14. The washing and cleaning agent according to any one of claims 12 to 13, characterized in that The coparticles B) are coated with cellulose ether.

15. A washing and cleaning agent according to any one of claims 12 to 14, characterised in that It is in the form of a powder or tablet-like solid, especially in the form of a powder.

16. Use of a washing and cleaning agent according to any one of claims 12 to 15 for disinfecting textiles or surfaces.

17. Use of a washing and cleaning agent as claimed in any of claims 12 to 15 for washing textiles or cleaning surfaces, in particular at temperatures of 40°C or below.

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