EP3164478A1 - Dishwashing detergent - Google Patents

Abstract

The invention relates to a dishwashing detergent, to a cleaning method and to the use of said dishwashing detergent which contains non-ionic surfactants and an amine polymer such as polyethyleneimine and polyvinyl amine.

Description

"Dishwashing liquid"

The invention relates to a dishwashing detergent, a cleaning process and the use of the dishwashing detergent.

So far, phosphate-free automatic machine dishwashing detergents (ADWs) have the problem that they attack the glass substance and often have a problem with dripping.

EP 0 893 491 A1 describes a machine dishwashing detergent.

EP 0 998 548 B1 also describes a machine dishwashing detergent.

It is therefore an object of the present invention to provide a machine dishwashing detergent which less affects the glass substance and allows better gloss through less drop formation.

In a first embodiment, this object is achieved by a dishwashing detergent containing an amine polymer, wherein the amine polymer has an amino group in at least 50% of the constitutional repeating units of the polymer, and wherein one or more nonionic surfactants in an amount of at least 1 wt.% Based on the Total weight of the dishwashing detergent are included.

Preferably, aminopolymer, more preferably polyethyleneimine and / or polyvinylamine, is present in an amount in the range of 0.001 to 10 weight percent, more preferably in the range of 0.005 to 1 weight percent, most preferably in the range of 0.01 to 0.2 wt.% Based on the total weight of the dishwashing detergent.

Preferably, the amino-polymer is a polyethylenimine which also has primary amino groups. Most preferably, the amino-polymer is a polyethylenimine or polyvinylamine which is not an alkoxylate.

Preferably, the amino polymer has a molecular weight Mw in a range of 3,000 to 10,000 g / mol.

Preferably, one or more fatty alcohol compounds, particularly preferably fatty alcohol alkoxylate, fatty alcohol ethers, fatty alcohol esters, fatty alcohol ether sulfate or a mixture thereof, in an amount in a range of 1 to 15 wt.%, Particularly preferably in a range of 3 to 10 wt Total weight of the dishwashing detergent included. Preferably, the weight ratio between on the one hand the fatty alcohol compound and on the other hand, the amino polymer in a range of 20: 1 to 700: 1. Preferably, the fatty alcohol compound is at least one fatty alcohol polyglycol ether, and more preferably in an amount in a range of 1 to 10 wt.%, Whole more preferably in a range of 2.5 to 5 wt.% Based on the total weight of the dishwashing detergent.

Preferably, the weight ratio between on the one hand Fettalkoholpolyglykolether and on the other hand aminopolymer in a range of 40: 1 to 300: 1.

The dishwashing detergent in a preferred embodiment further contains one or more builders. These may be organic and / or inorganic builders.

Useful organic builders are, for example, the polycarboxylic acids which can be used in the form of the free acid and / or their sodium salts, polycarboxylic acids meaning those carboxylic acids which carry more than one acid function. These are, for example, citric acid, adipic acid, succinic acid, glutaric acid, malic acid, tartaric acid, maleic acid, fumaric acid, sugar acids, aminocarboxylic acids, nitrilotriacetic acid (NTA), if such use is not objectionable for ecological reasons, and mixtures of these. In addition to their builder effect, the free acids also typically have the property of an acidifying component and thus also serve to set a lower and milder pH of detergents or cleaners. In particular, citric acid, succinic acid, glutaric acid, adipic acid, gluconic acid and any desired mixtures of these can be mentioned here.

Particularly preferred machine dishwasher detergents according to the invention contain citrate as one of their essential builders. Machine dishwashing detergents may contain from 2 to 40% by weight, preferably from 5 to 30% by weight and in particular from 7 to 20% by weight, of citrate.

The citrates are preferably used in combination with carbonates and / or bicarbonates. Preferred automatic dishwashing detergents are therefore characterized by a builder combination of citrate and carbonate / bicarbonate.

Particularly preferred automatic dishwasher detergents are characterized in that the dishwashing detergent contains, in addition to citrate and (hydrogen) carbonate, at least one further phosphorus-free builder, the further phosphorus-free builder preferably being selected from methylglycine diacetate (MGDA), glutamic acid diacetate (GLDA), aspartic acid diacetate (ASDA), Hydroxyethyliminodiacetate (HEIDA), iminodisuccinate (IDS) and ethylenediamine disuccinate (EDDS), more preferably from MGDA and / or GLDA. The proportion by weight of the further phosphorus-free builder, in particular of the MGDA and / or GLDA, is preferably from 2 to 40% by weight, in particular from 5 to 30% by weight, especially from 7 to 20% by weight, the proportion by weight of the total builders, based on the total weight of the machine Dishwashing agent, is preferably 5 to 80 wt .-%, preferably 15 to 75 wt .-% and in particular 30 to 70 wt .-%. The combination of at least three builders from the above-mentioned group has proved to be advantageous for the cleaning and rinsing performance of automatic dishwashing agents according to the invention.

Other suitable builders are polymeric polycarboxylates, for example the alkali metal salts of polyacrylic acid or polymethacrylic acid, for example those having a relative molecular mass of 500 to 70,000 g / mol.

Suitable polymers are, in particular, polyacrylates which preferably have a molecular weight of 2,000 to 20,000 g / mol. Because of their superior solubility, the short-chain polyacrylates, which have molar masses of from 2000 to 10000 g / mol, and particularly preferably from 3000 to 5000 g / mol, may again be preferred from this group.

The content of the automatic dishwashing agents on (homo) polymeric polycarboxylates is preferably 0.5 to 20% by weight and in particular 3 to 10% by weight.

Inventive automatic dishwashing agents as a builder also crystalline layered silicates of the general formula + contained NaMSix02x i ^■ y H2O wherein M is sodium or hydrogen, x is a number from 1, 9 to 22, preferably from 1: 9 to 4, and particularly preferred Values for x are 2, 3 or 4, and y is a number from 0 to 33, preferably from 0 to 20.

It is also possible to use amorphous sodium silicates having a modulus Na 2 O: SiO 2 of from 1: 2 to 1: 3.3, preferably from 1: 2 to 1: 2.8 and in particular from 1: 2 to 1: 2.6, which are preferably delayed in dissolution ,

In preferred machine dishwashing detergents according to the invention, the content of silicates, based on the total weight of the automatic dishwashing detergent, is limited to amounts below 10% by weight, preferably below 5% by weight and in particular below 2% by weight. Particularly preferred automatic dishwasher detergents according to the invention are silicate-free.

In addition to the abovementioned builders, the agents according to the invention may contain alkali metal hydroxides. These alkali carriers are preferred in the cleaning agents only in small amounts, preferably in amounts below 10 wt .-%, preferably below 6 wt .-%, preferably below 5 wt .-%, particularly preferably between 0, 1 and 5 wt .-% and in particular between 0.5 and 5 wt .-%, each based on the total weight of the cleaning agent used. Alternative automatic dishwashing detergents are free of alkali metal hydroxides. Compositions according to the invention can furthermore contain phosphonate (e) as builder. Phosphonates which can be used according to the invention are preferably selected from aminotrimethylenephosphonic acid (ATMP); Ethylenediaminetetra (methylenephosphonic acid) (EDTMP); Diethylene triamine penta (methylenephosphonic acid) (DTPMP); 1-hydroxyethane-1, 1-diphosphonic acid (HEDP); 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC);

Hexamethylenediaminetetra (methylenephosphonic acid) (HDTMP) and

Nitrilotri (methylenephosphonic acid) (NTMP), with particular preference to use 1-hydroxyethane-1, 1-diphosphonic acid (HEDP) and diethylenetriaminepenta (methylenephosphonic acid) (DTPMP). Phosphonate (s) are preferably used in inventive compositions in amounts of 0.5 to 20 wt .-%, in particular from 0.5 to 10 wt .-% and especially from 0.5 to 8 wt .-%.

Inventive agents are preferably largely phosphate-free. In preferred automatic dishwasher detergents according to the invention, the content of phosphates, based on the total weight of the automatic dishwashing agent, is below 10% by weight, preferably below 5% by weight, in particular below 2% by weight, above all below 0.5 Limited by weight. Particularly preferred automatic dishwasher detergents according to the invention are completely phosphate-free.

In addition, in a preferred embodiment, in general, the content of phosphorus-containing builders, based on the total weight of the automatic dishwashing agent, to amounts below 10 wt .-%, preferably below 5 wt .-%, especially below 2 wt .-%, especially below 0.5 wt .-% limited. Particularly preferred machine dishwasher detergents according to the invention are generally free of phosphorus-containing builders.

Dishwashing agents according to the invention contain in a preferred embodiment as further constituent at least one zinc salt. The zinc salt may be an inorganic or organic zinc salt. The zinc salt to be used according to the invention preferably has a solubility in water above 100 mg / l, preferably above 500 mg / l, more preferably above 1 g / l and especially above 5 g / l (all solubilities at 20 ° C water temperature). The inorganic zinc salt is preferably selected from the group consisting of zinc bromide, zinc chloride, zinc iodide, zinc nitrate and zinc sulfate. The organic zinc salt is preferably selected from the group consisting of zinc salts of monomeric or polymeric organic acids, in particular from the group zinc acetate, zinc acetylacetonate, zinc benzoate, zinc formate, zinc lactate, zinc gluconate, zinc ricinoleate, zinc abietate, zinc valerate and zinc p-toluenesulfonate. In a particularly preferred embodiment according to the invention, zinc acetate is used as the zinc salt.

The zinc salt is preferably present in dishwashing detergents according to the invention in an amount of from 0.01 to 3% by weight, more preferably in an amount of from 0.05 to 2% by weight, in particular in an amount of from 0.1 to 1% by weight. %, contain. In a preferred embodiment, the dishwashing agent according to the invention contains at least one nonionic surfactant. As nonionic surfactants (also referred to as nonionic surfactants) it is possible to use all nonionic surfactants known to the person skilled in the art, for example alkoxylated, preferably ethoxylated or ethoxylated and propoxylated alcohols, alkyl polyglycosides (APG), alkoxylated, preferably ethoxylated or ethoxylated and propoxylated fatty acid alkyl esters, amine oxides, fatty acid alkanolamides, polyhydroxy fatty acid amides as well as mixtures.

Low-foaming nonionic surfactants are used as preferred surfactants. With particular preference, washing or cleaning agents, in particular automatic dishwashing detergents, contain nonionic surfactants from the group of the alkoxylated alcohols. The nonionic surfactants used are preferably alkoxylated, advantageously ethoxylated, in particular primary, alcohols having preferably 8 to 18 carbon atoms and an average of 1 to 12 moles of ethylene oxide (EO) per mole of alcohol, in which the alcohol residue can be linear or preferably methyl-branched in the 2-position or linear and methyl-branched radicals in the mixture can contain, as they are usually present in Oxoalkoholresten. In particular, however, alcohol ethoxylates having linear radicals of alcohols of native origin having 12 to 18 carbon atoms, e.g. from coconut, palm, tallow or oleyl alcohol, and on average from 2 to 8 moles of EO per mole of alcohol. The preferred ethoxylated alcohols include, for example, C12-14-alcohols with 3 EO or 4 EO, Cg-n-alcohol with 7 EO, cis-is alcohols with 3 EO, 5 EO, 7 EO or 8 EO, Ci2-i8- Alcohols with 3 EO, 5 EO or 7 EO and mixtures of these, such as mixtures of Ci2-i4-alcohol with 3 EO and Ci2-is-alcohol with 5 EO. The stated degrees of ethoxylation represent statistical averages, which may correspond to a particular product of an integer or a fractional number. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow rank 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.

Particular preference is therefore given to ethoxylated nonionic surfactants which have been obtained from C 6-2o -monohydroxyalkanols or C 6-2o -alkylphenols or C 16-2o-fatty alcohols and more than 12 mol, preferably more than 15 mol and in particular more than 20 mol of ethylene oxide per mol of alcohol used. A particularly preferred nonionic surfactant is obtained from a straight-chain fatty alcohol having 16 to 20 carbon atoms (C 16-2o-alcohol), preferably a cis-alcohol and at least 12 mol, preferably at least 15 mol and especially at least 20 mol of ethylene oxide. Of these, the so-called "narrow ranks ethoxylates" are particularly preferred.

With particular preference surfactants are further used which contain one or more tallow fatty alcohols with 20 to 30 EO in combination with a silicone defoamer.

Particular preference is given to nonionic surfactants which have a melting point above room temperature. Nonionic surfactant (s) having a melting point above 20 ° C, preferably above 25 ° C, more preferably between 25 and 60 ° C and especially between 26.6 and 43.3 ° C, is / are particularly preferred.

Suitable nonionic surfactants which have melting or softening points in the temperature range mentioned are, for example, low-foaming nonionic surfactants which may be solid or highly viscous at room temperature. If nonionic surfactants are used which are highly viscous at room temperature, it is preferred that they have a viscosity above 20 Pas, preferably above 35 Pas and in particular above 40 Pas. Nonionic surfactants which have waxy consistency at room temperature are also preferred.

Furthermore, nonionic surfactants from the group of mixed alkoxylated alcohols, in particular from the group of EO-AO-EO-Niotenside can be used. In this case, a combination of ethylene oxide and propylene oxide (PO) is preferred. Here, the PO units preferably make up to 25 wt .-%, more preferably up to 20 wt .-% and in particular up to 15 wt .-% of the total molecular weight of the nonionic surfactant from. Particularly preferred nonionic surfactants are ethoxylated primary alcohols, monohydroxyalkanols or alkylphenols which additionally have polyoxyethylene-polyoxypropylene block copolymer units. The alcohol or alkylphenol part of such nonionic surfactant molecules preferably constitutes more than 30% by weight, more preferably more than 50% by weight and in particular more than 70% by weight of the total molecular weight of such nonionic surfactants. Also (PO / EO / PO) nonionic surfactants, which are characterized by good foam control, can be used. In a preferred embodiment, however, alkoxylated nonionic surfactants are used whose alkoxylate content consists exclusively of ethylene oxide units.

End-capped surfactants, especially those of the general formula

R is -CH (OH) CH 2 O- (AO) w- (A'0) x- (A "0) _y - (A '" 0) z R ² in which

R and R ² independently of one another represent a straight-chain or branched, saturated or mono- or polyunsaturated C 2-4 -alkyl or -alkenyl radical; A, Α ', A "and A'" independently of one another are radicals from the group -CH 2 CH 2, -CH 2 CH 2 -CH 2, -CH 2 -CH (CH ₃ ), -CH 2 -CH 2 -CH 2 -CH 2, -CH 2 -CH ( CH ₃₎ -CH 2, -CH 2 CH (CH 2 CH _3); and w, x, y and z are values between 0.5 and 90, where x, y and / or z may also be 0, are also preferred.

Very particular preference is given here to nonionic surfactants of the general formula R 0 [CH ₂ CH (CH ₃ ) O] x [CH ₂ CH ₂ O] _y [CH ₂ CH (CH ₃ ) O] zCH ² CH (OH) R ² in which R is a linear or branched aliphatic hydrocarbon radical with 4 to 22, in particular 6 to 18, carbon atoms or mixtures thereof, R ² denotes a linear or branched hydrocarbon radical having 2 to 26, in particular 4 to 20, carbon atoms or mixtures thereof and x and z for values between 0 and 40 and y is a value of at least 15, preferably from 15 to 120, particularly preferably from 20 to 80. In a preferred embodiment, the automatic dishwashing detergent contains, based on its total weight, nonionic surfactant of the general formula

RO [CH ₂ CH (CH ₃ ) O] x [CH ₂ CH ₂ O] _y [CH ₂ CH (CH ₃ ) O] z CH ₂ CH (OH) R ² in amounts of from 0.1 to 15% by weight, preferably from 0.2 to 10% by weight. %, more preferably 0.5 to 8 wt .-% and in particular from 1, 0 to 6 wt .-%.

Particularly preferred are end-capped poly (oxyalkylated) nonionic surfactants according to the formula R 0 [CH ² CH ² O] _y CH ² CH (OH) R ² in which R is a linear or branched aliphatic hydrocarbon radical having 4 to 22, in particular 6 to 16, carbon atoms or mixtures thereof R ² denotes a linear or branched hydrocarbon radical having 2 to 26, in particular 4 to 20, carbon atoms or mixtures thereof and y is a value between 15 and 120, preferably 20 to 100, in particular 20 to 80. The group of these nonionic surfactants include, for example, hydroxy mixed ethers of the general formula Ce-22-CH (OH) CH20- (EO) 2o-i2o-C2-26, for example the Cs-12 fatty alcohol (EO) 22-2-hydroxydecyl ethers and the C4-22 fatty alcohol (EO) 4o-8o-2-hydroxyalkyl ether.

Automatic dishwashing detergent according to the invention, characterized in that the low-foaming nonionic surfactant is a surfactant of the general formula

R is CH (OH) CH ² O- (CH ² CH ² O) 2o-i 2o-R ² , where R and R ² independently of one another are a linear or branched aliphatic hydrocarbon radical having 2 to 20, in particular 4 to 16, carbon atoms, are particularly preferred.

The group of preferred end-capped poly (oxyalkylated) nonionic surfactants also includes nonionic surfactants of the formula R 0 [CH ₂ CH ₂ O] x [CH ₂ CH (R ³ ) O] _y CH ₂ CH (OH) R ² in which R and R ² independently of one another are linear or branched, saturated or mono- or polyunsaturated hydrocarbon radical having 2 to 26 carbon atoms, R ^{3 is} independently selected from -CH 3, -CH 2 CH 3, -CH 2 CH 2 -CH 3, -CH (CH 3) 2, but preferably -CH 3 , and x and y independently represent values between 1 and 32, with nonionic surfactants with R ³ = -CH ³ and values for x of 15 to 32 and y of 0.5 and 1.5 being very particularly preferred.

Further preferred nonionic surfactants used are nonionic surfactants of the general formula R 0 (AlkO) _x M (OAlk) _y OR ² , where

R and R ² independently of one another represent a branched or unbranched, saturated or unsaturated, optionally hydroxylated alkyl radical having 4 to 22 carbon atoms;

Alk is a branched or unbranched alkyl radical having 2 to 4 carbon atoms; x and y independently represent values between 1 and 70; and M is an alkyl radical from the group CH _2, CHR ^3, CR ³ R ^4, CH 2 CHR ³ and CHR ³ CHR ^4, wherein R ³ and R ⁴ independently represent a branched or unbranched, saturated or unsaturated alkyl radical having 1 to 18 carbon atoms stand.

The stated C chain lengths and degrees of ethoxylation or degrees of alkoxylation of the abovementioned nonionic surfactants represent statistical mean values which, for a specific product, may be an integer or a fractional number. Due to the methods II trade products of the formulas mentioned are usually not from an individual representative, but from mixtures, which may result in both the C chain lengths and for the degrees of ethoxylation and degrees of alkoxylation averages and resulting broken numbers.

Of course, the aforementioned nonionic surfactants can be used not only as individual substances, but also as surfactant mixtures of two, three, four or more surfactants. Mixtures of surfactants are not mixtures of nonionic surfactants which fall in their entirety under one of the abovementioned general formulas, but rather mixtures which contain two, three, four or more nonionic surfactants which can be described by different general formulas ,

The proportion by weight of the nonionic surfactant in the total weight of the inventive automatic dishwashing agent in a preferred embodiment is from 0.1 to 20% by weight, more preferably from 0.5 to 15% by weight, in particular from 2.5 to 10% by weight. %.

In addition to nonionic surfactants, other surfactants from the group of anionic surfactants, the amphoteric surfactants, the zwitterionic surfactants, the cationic surfactants and mixtures thereof may be included, in particular anionic surfactants, for example those having a sulfate or sulfonate group.

Another object of the present invention is also a machine dishwashing process using the aforementioned solid dishwashing detergent, in particular in the form of a previously mentioned shaped body, in particular for the removal, especially improved removal, of greasy soilings, especially for the removal of stains by egg yolk.

The dishwashing process is preferably carried out at a liquor temperature below 60 ° C, preferably below 50 ° C. In a preferred embodiment, the dishwashing process takes a maximum of 90 minutes, in particular a maximum of 75 minutes, more preferably a maximum of 60 minutes. In particular embodiments, the dishwashing process lasts for a maximum of 50, 40, or 30 minutes.

The present application relates to automatic dishwashing detergents. Automatic dishwashing detergents, according to this application, are compositions which are used to clean soiled dishes in a dishwashing process can be. Thus, the automatic dishwasher detergents according to the invention differ, for example, from the machine rinse aid agents, which are always used in combination with automatic dishwashing detergents and do not develop their own cleaning action.

The automatic dishwashing compositions according to the invention are preferably in the form of a shaped body, in particular a compactate, in particular a tablet. However, they may also be present in combination with other forms of supply, in particular in combination with solid forms such as powders, granules or extrudates or in combination with liquid formulations based on water and / or organic solvents.

The shaped body may, for example, also be a granulate which is contained in a bag or a casting mold.

Inventive agents can be formulated as single-phase or multi-phase products. Machine dishwashing detergents with one, two, three or four phases are particularly preferred. Machine dishwashing detergents, characterized in that they are in the form of a prefabricated dosing unit with two or more phases, are particularly preferred. Two-phase or multi-phase tablets, for example two-layer tablets, in particular two-layer tablets with a trough and a shaped body located in the trough, are particularly preferred.

Automatic dishwasher detergents according to the invention are preferably prefabricated to form metering units. These metering units preferably comprise the necessary for a cleaning cycle amount of washing or cleaning-active substances. Preferred metering units have a weight between 12 and 30 g, preferably between 14 and 26 g and in particular between 15 and 22 g.

The volume of the aforementioned metering units and their spatial form are selected with particular preference so that a metering of the prefabricated units is ensured via the metering chamber of a dishwasher. The volume of the dosing unit is therefore preferably between 10 and 35 ml, preferably between 12 and 30 ml and in particular between 15 and 25 ml.

The automatic dishwashing compositions according to the invention, in particular the prefabricated dosage units, in a preferred embodiment have a water-soluble coating.

Inventive moldings contain in a preferred embodiment polyvinylpyrrolidone particles. These particles facilitate, inter alia, the disintegration of the moldings and serve insofar as disintegration aids or tablet disintegrating agents. It has been found to be particularly advantageous according to the invention, Polyvinylpyrrolidon particles having an average particle diameter of 100 to 150 μιη, in particular with an average particle diameter of 1 10 to 130 μιη, use. For the purposes of the present invention, the term "average particle diameter" or "average diameter" is to be understood as meaning the volume-average D50 particle diameter which can be determined by customary methods The volume-average D50 particle diameter is the point in the particle size distribution at which 50 vol. % of the particles have a smaller diameter and 50% by volume of the particles have a larger diameter The mean particle diameters can be determined in particular by means of dynamic light scattering, which is usually carried out on dilute suspensions containing, for example, 0.01 to 1% by weight of particles , be performed.

Particularly preferably, the PVP particles not only have an average particle diameter of 100 to 150 μιη, in particular from 1 10 to 130 μιη, but moreover, the particle size of the particles used is preferably completely within the specified intervals. This is ensured by using grain size fractions with the indicated particle sizes obtained by a sieving process.

The PVP particles are preferably present in compositions according to the invention in an amount of from 0.1 to 5% by weight, in particular in an amount of from 0.2 to 3% by weight, in particular in an amount of from 0.3 to 1, 8 wt .-%, contained.

The effect of disintegrants is usually that they increase their volume upon ingress of water, whereby on the one hand increases the intrinsic volume (swelling), but on the other hand by the release of gases, a pressure can be generated, which can disintegrate the tablet into smaller particles , In addition or as an alternative to the PVP particles, other disintegrants may also be present in moldings according to the invention, for example carbonate / citric acid systems or carbonate in combination with other organic acids, synthetic polymers or natural polymers or modified natural substances such as cellulose and starch and their derivatives and Alginates or casein derivatives. Furthermore, gas-evolving effervescent systems can also be used as further disintegrants. Preferred effervescent systems consist of at least two constituents which react with one another to form gas, for example alkali metal carbonate and / or bicarbonate and an acidifier which is suitable for liberating carbon dioxide from the alkali metal salts in aqueous solution. An acidifying agent that releases carbon dioxide from the alkali salts in aqueous solution is, for example, citric acid.

The further disintegration aids are, if used, preferably in amounts of 0, 1 to 10 wt .-%, preferably 0.2 to 5 wt .-% and in particular 0.5 to 2 wt .-%, each based on the total weight of desintegrationshilfsmittelhaltigen agent used.

It is preferred if the dishwashing detergent is present as a shaped body, particularly preferably as a detergent tablet. The production of the shaped bodies according to the invention, in particular of the detergent tablets, preferably takes place in a manner known to the person skilled in the art by compression of particulate starting substances. To prepare the tablets, the premix is compressed in a so-called matrix between two punches to form a solid compressed product. This process, hereinafter referred to as tableting, is divided into four sections: dosing, compaction (elastic deformation), plastic deformation and ejection. The tabletting is preferably carried out on so-called rotary presses.

The ingredients provided for tabletting can be added in the form of a common particulate premix at the same time or in the form of individual, separate powders or granules offset in time or at the same time in the mold, the dosage of a prefabricated particulate premix is preferred.

Automatic dishwashing detergents according to the invention contain as further constituent in a preferred embodiment at least one anionic polymer. Preferred anionic polymers here are the copolymeric polycarboxylates and the copolymeric polysulfonates.

The proportion by weight of the anionic polymer in the total weight of the inventive automatic dishwashing agent in a preferred embodiment is from 0.1 to 20% by weight, preferably from 0.5 to 18% by weight, particularly preferably from 1, 0 to 15% by weight. % and in particular from 4 to 14 wt .-%.

The copolymeric anionic polymer may be selected from the group of hydrophobically modified polycarboxylates and polysulfonates. This is a particularly preferred object, since the hydrophobic modification of the anionic copolymers can be used to improve the rinsing and drying properties of these agents while at the same time having a low deposit formation.

The copolymers may have two, three, four or more different monomer units.

Preferred copolymeric polysulfonates contain not only sulfonic acid group-containing monomer (s) but also at least one monomer selected from the group consisting of unsaturated carboxylic acids.

Unsaturated carboxylic acid (s) used are, with particular preference, unsaturated carboxylic acids of the formula R (R ² ) C =C (R ³ ) COOH, in which R ¹ to R ³ independently of one another represent -H, -CH 3, a straight-chain or branched one saturated alkyl radical having 2 to 12 carbon atoms, a straight-chain or branched, mono- or polyunsaturated alkenyl radical having 2 to 12 carbon atoms, with -NH 2, -OH or -COOH substituted alkyl or alkenyl radicals as defined above or for -COOH or -COOR ⁴ wherein R ^{4 is} a saturated or unsaturated, straight-chain or branched hydrocarbon radical having 1 to 12 carbon atoms. Particularly preferred unsaturated carboxylic acids are acrylic acid, methacrylic acid, ethacrylic acid, α-chloroacrylic acid, α-cyanoacrylic acid, crotonic acid, α-phenyl-acrylic acid, maleic acid, maleic anhydride, fumaric acid, itaconic acid, citraconic acid, methylenemalonic acid, sorbic acid, cinnamic acid or mixtures thereof. It goes without saying that it is also possible to use the unsaturated dicarboxylic acids.

Copolymers of acrylic acid with methacrylic acid and of acrylic acid or methacrylic acid with maleic acid are particularly preferably used according to the invention as copolymeric polycarboxylates. Copolymers of acrylic acid with maleic acid which contain 50 to 90% by weight of acrylic acid and 50 to 10% by weight of maleic acid have proven to be particularly suitable. Their relative molecular weight, based on free acids, is generally from 2000 to 70000 g / mol, preferably from 20,000 to 50,000 g / mol and in particular from 30,000 to 40,000 g / mol.

In the sulfonic acid-containing monomers are those of the formula

R ⁵ (R ⁶ ) C =C (R ⁷ ) -X-SO ₃ H in which R ⁵ to R ^7, independently of one another, is -H, -CH ₃ , a straight-chain or branched saturated alkyl radical having 2 to 12 carbon atoms, a straight-chain or branched, mono- or polyunsaturated alkenyl radical having 2 to 12 carbon atoms, with alkyl or alkenyl radicals substituted by -NH ₂ , -OH or -COOH, or by -COOH or -COOR ⁴ , where R ^{4 is} a saturated or unsaturated, is straight-chain or branched hydrocarbon radical having 1 to 12 carbon atoms, and X is an optional spacer group which is selected from - (CH ₂ ) n - with n = 0 to 4, -COO- (CH ₂ ) _k - with k = 1 to 6, -C (O) -NH-C (CH ₃ ) ₂ -, -C (O) - NH-C (CH ₃ ) ₂ -CH ₂ - and -C (O) -NH-CH (CH ₃ ) -CH ₂ -.

Preferred among these monomers are those of the formulas

H ₂ C = CH-X-SO ₃ H

H ₂ C = C (CH ₃ ) -X-SO ₃ H

H0 ₃ SX- (R ⁶ ) C = C (R ⁷ ) -X-S0 ₃ H, in which R ⁶ and R ^{7 are} independently selected from -H, -CH ₃ , -CH ₂ CH ₃ , -CH ₂ CH ₂ CH ₃ and -CH (CH ₃ ) ₂ and X is an optional spacer group which is selected from - (CH ₂ ) _n - with n = 0 to 4, -COO- (CH ₂ ) _k - with k = 1 to 6, -C (O) -NH-C (CH ₃ ) ₂ -, -C (O) -NH-C (CH ₃ ) ₂ -CH ₂ - and -C (O) -NH-CH ( CH ₃ ) -CH ₂ -.

Particularly preferred monomers containing sulfonic acid groups are 1-acrylamido-1-propanesulfonic acid, 2-acrylamido-2-propanesulfonic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid, 2-methacrylamido-2-methyl-1-propanesulfonic acid, 3 methacrylamido-2-hydroxy propanesulfonic acid, allylsulfonic acid, methallylsulfonic acid, allyloxybenzenesulfonic acid, methallyloxybenzenesulfonic acid, 2-hydroxy-3- (2-propenyloxy) propanesulfonic acid, 2-methyl-2-propenylsulfonic acid, styrenesulfonic acid, vinylsulfonic acid, 3-sulfopropyl acrylate, 3-sulfopropyl methacrylate, sulfomethacrylamide, sulfomethylmethacrylamide and mixtures of said acids or their water-soluble salts.

In the polymers, the sulfonic acid groups may be wholly or partially in neutralized form, i. the acidic acid of the sulfonic acid group in some or all sulfonic acid groups can be exchanged for metal ions, preferably alkali metal ions and in particular for sodium ions. The use of partially or fully neutralized sulfonic acid-containing copolymers is preferred according to the invention.

The monomer distribution of the copolymers preferably used according to the invention in the case of copolymers containing only monomers containing carboxylic acid groups and monomers containing sulfonic acid groups is preferably from 5 to 95% by weight, more preferably from 50 to 90% by weight of the sulfonic acid group-containing monomer. % and the proportion of the carboxylic acid group-containing monomer 10 to 50 wt .-%, the monomers are hereby preferably selected from the aforementioned.

The molar mass of the sulfo copolymers preferably used according to the invention can be varied in order to adapt the properties of the polymers to the desired end use. Preferred automatic dishwashing detergents are characterized in that the copolymers have molecular weights from 2000 to 200,000 gmol ^"1, preferably from 4000 to 25,000 ^{gmol" 1} and in particular from 5000 to 15,000 gmol ^-1.

In a further preferred embodiment, in addition to the monomer containing carboxyl groups and the monomer containing sulfonic acid groups, the copolymers further comprise at least one nonionic, preferably hydrophobic monomer. The use of these hydrophobically modified polymers has made it possible in particular to improve the rinse aid performance of automatic dishwashing detergents according to the invention.

The automatic dishwashing agent may contain, as anionic copolymer, a copolymer comprising i) monomer (s) containing carboxylic acid groups, ii) monomer (s) containing sulfonic acid groups, iii) nonionic monomer (s). The nonionic monomers used are preferably monomers of the general formula R (R ² ) C =C (R ³ ) -XR ⁴ , in which R to R ^3, independently of one another, is -H, -CH ₃ or -C 2 H 5, X is an optional one existing spacer group which is selected from -CH 2 -, -C (0) 0- and -C (0) -NH-, and R ^{4 is} a straight-chain or branched saturated alkyl radical having 2 to 22 carbon atoms or an unsaturated, preferably aromatic radical having 6 to 22 carbon atoms.

Particularly preferred nonionic monomers are butene, isobutene, pentene, 3-methylbutene, 2-methylbutene, cyclopentene, hexene, hexene-1, 2-methylpentene-1, 3-methylpentene-1, cyclohexene, methylcyclopentene, cycloheptene, methylcyclohexene, 2,4 , 4-trimethylpentene-1, 2,4,4-trimethylpentene-2,3,3-dimethylhexene-1, 2,4-dimethylhexene-1, 2,5-dimethlyhexene-1,3,5-dimethylhexene-1,4 , 4-dimethylhexane-1, ethylcyclohexyne, 1-octene, α-olefins having 10 or more carbon atoms such as 1-decene, 1-dodecene, 1-hexadecene, 1-octadecene and C22-α-olefin, 2-styrene, a Methylstyrene, 3-methylstyrene, 4-propylstryol, 4-cyclohexylstyrene, 4-dodecylstyrene, 2-ethyl-4-benzylstyrene, 1-vinylnaphthalene, 2, vinylnaphthalene, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, pentyl acrylate, hexyl acrylate, methacrylic acid methyl ester , N- (methyl) acrylamide, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, A / - (2-ethylhexyl) acrylamide, acrylic octyl lactate, octyl acrylate, A / - (octyl) acrylamide, lauryl acrylate, lauryl methacrylate, N- (lauryl) acrylamide, stearyl acrylate, stearyl methacrylate, A / - (stearyl) acrylamide, behenyl acrylate, behenyl methacrylate and A / - (behenyl) acrylamide or mixtures thereof.

Dishwashing agents according to the invention furthermore preferably contain enzyme (s) to ensure their cleaning action.

Dishwashing agents according to the invention preferably comprise enzyme (s) as a further constituent. These include in particular proteases, amylases, lipases, hemicellulases, cellulases, perhydrolases or oxidoreductases, and preferably mixtures thereof. These enzymes are basically of natural origin; Starting from the natural molecules, improved variants are available for use in detergents or cleaning agents, which are preferably used accordingly. Detergents or cleaning agents contain enzymes preferably in total amounts of 1 × 10 ^-6 to 5 wt .-% based on active protein. The protein concentration can be determined by known methods, for example the BCA method or the biuret method.

Among the proteases, those of the subtilisin type are preferable. Examples are the subtilisins BPN 'and Carlsberg and their further developed forms, the protease PB92, the subtilisins 147 and 309, the alkaline protease from Bacillus lentus, subtilisin DY and the subtilases, not but more to the subtilisins in the narrower sense, enzymes thermitase, proteinase K and the proteases TW3 and TW7.

Examples of amylases which can be used according to the invention are the α-amylases from Bacillus licheniformis, from β. amyloliquefaciens, from β. stearothermophilus, from Aspergillus niger and A. oryzae, as well as improved for use in detergents and cleaners further developments of the aforementioned amylases. Furthermore, the a-amylase from Bacillus sp. A 7-7 (DSM 12368) and cyclodextrin glucanotransferase (CGTase) from β. agaradherens (DSM 9948).

Also usable according to the invention are lipases or cutinases, in particular because of their triglyceride-splitting activities, but also in order to generate in situ peracids from suitable precursors. These include, for example, the lipases originally obtainable from Humicola lanuginosa (Thermomyces lanuginosus) or further developed, in particular those with the amino acid exchange D96L.

Furthermore, enzymes can be used, which are summarized by the term hemicellulases. These include, for example, mannanases, xanthan lyases, pectin lyases (= pectinases), pectin esterases, pectate lyases, xyloglucanases (= xylanases), pullulanases and β-glucanases.

Oxidoreductases, for example oxidases, oxygenases, catalases, peroxidases, such as halo, chloro, bromo, lignin, glucose or manganese peroxidases, dioxygenases or laccases (phenol oxidases, polyphenol oxidases) can be used according to the invention to increase the bleaching effect. Advantageously, it is additionally preferred to add organic, particularly preferably aromatic, compounds which interact with the enzymes in order to enhance the activity of the relevant oxidoreductases (enhancers) or to ensure the flow of electrons (mediators) at greatly varying redox potentials between the oxidizing enzymes and the soils.

A protein and / or enzyme may be particularly protected during storage against damage such as inactivation, denaturation or degradation, such as by physical influences, oxidation or proteolytic cleavage. In microbial recovery of proteins and / or enzymes, inhibition of proteolysis is particularly preferred, especially if the agents also contain proteases. Detergents may contain stabilizers for this purpose; the provision of such means constitutes a preferred embodiment of the present invention.

Washing or cleaning-active proteases and amylases are generally not in the form of the pure protein, but rather in the form of stabilized, storable and transportable preparations provided. Such prefabricated preparations include, for example, the solid preparations obtained by granulation, extrusion or lyophilization or, especially in the case of liquid or gel-form detergents, solutions of the enzymes, advantageously as concentrated as possible, low in water and / or added with stabilizers or further auxiliaries.

Alternatively, the enzymes may be encapsulated for both the solid and liquid dosage forms, for example by spray-drying or extruding the enzyme solution together with a preferably natural polymer or in the form of capsules, for example those in which the enzymes are entrapped as in a solidified gel or in those of the core-shell type, in which an enzyme-containing core is coated with a water, air and / or chemical impermeable protective layer. In deposited layers, further active ingredients, for example stabilizers, emulsifiers, pigments, bleaches or dyes, may additionally be applied. Such capsules are applied by methods known per se, for example by shaking or rolling granulation or in fluid-bed processes. Advantageously, such granules, for example by applying polymeric film-forming agent, low in dust and storage stable due to the coating.

Furthermore, it is possible to assemble two or more enzymes together so that a single granule has several enzyme activities.

As can be seen from the previous comments, the enzyme protein forms only a fraction of the total weight of conventional enzyme preparations. Protease and amylase preparations preferably used according to the invention contain between 0.1 and 40% by weight, preferably between 0.2 and 30% by weight, particularly preferably between 0.4 and 20% by weight and in particular between 0, 8 and 10 wt .-% of the enzyme protein.

In addition to the ingredients described above, the compositions according to the invention may contain further washing or cleaning-active substances, preferably from the group of bleaches, bleach activators and bleach catalysts, glass corrosion inhibitors, corrosion inhibitors, fragrances and perfume carriers. These preferred ingredients will be described in more detail below.

Machine dishwashing detergents according to the invention may contain a bleaching agent as further constituent, with oxygen bleaches being preferred. Among the compounds which serve as bleaching agents in water H2O2, sodium percarbonate, sodium perborate tetrahydrate and sodium perborate monohydrate are of particular importance. Further useful bleaching agents are, for example, peroxypyrophosphates, citrate perhydrates and peroxygenic salts or peracids which yield H2O2, such as perbenzoates, peroxophthalates, diperazelaic acid, phthaloiminoperacid or diperdodecanedioic acid. Furthermore, bleaching agents from the group of organic bleaching agents can also be used. Typical organic bleaches are the diacyl peroxides such as dibenzoyl peroxide. Other typical organic bleaches are the peroxyacids, examples of which include the alkyl peroxyacids and the aryl peroxyacids.

Preferred automatic dishwashing agents according to the invention are characterized in that they contain an oxygen bleaching agent, preferably sodium percarbonate, more preferably a coated sodium percarbonate. The proportion by weight of the bleaching agent, based on the total weight of the washing or cleaning agent, in preferred embodiments is between 2 and 30% by weight, preferably between 4 and 20% by weight and in particular between 6 and 15% by weight.

As bleach activators, the automatic dishwasher detergents according to the invention may contain bleach activators. These compounds give under perhydrolysis aliphatic peroxycarboxylic acids having preferably 1 to 10 carbon atoms, in particular 2 to 4 carbon atoms, and / or optionally substituted perbenzoic acid. Suitable substances are those which carry O- and / or N-acyl groups of the stated carbon atom number and / or optionally substituted benzoyl groups. Preference is given to polyacylated alkylene-diamines, with tetraacetylethylenediamine (TAED) having proven particularly suitable.

Automatic dishwashing detergent, characterized in that it is a bleach activator bleach activator from the group of acetylated amines, preferably tetraacetylenediamine (TAED), are preferred according to the invention. These bleach activators, in particular TAED, are preferably used in amounts of up to 10% by weight, in particular 0.1 to 10% by weight, especially 0.5 to 8% by weight and more preferably 1.0 to 6 Wt .-%, used.

In addition or as an alternative to the conventional bleach activators, the automatic dishwasher detergents according to the invention preferably contain at least one bleach catalyst. These substances are bleach-enhancing transition metal salts or transition metal complexes such as, for example, Mn, Fe, Co, Ru or Mo saline complexes or carbonyl complexes. Mn, Fe, Co, Ru, Mo, Ti, V and Cu complexes with N-containing tripod ligands and Co, Fe, Cu and Ru ammine complexes can also be used as bleach catalysts.

It is particularly preferred to use complexes of manganese in the oxidation state II, III, IV or IV, which preferably contain one or more macrocyclic ligands with the donor functions N, NR, PR, O and / or S. Preferably, ligands are used which have nitrogen donor functions. It is particularly preferred to use bleach catalyst (s) in the compositions of the invention, which as macromolecular ligands 1, 4,7-trimethyl-1, 4,7-triazacyclononan (Me-TACN), 1, 4,7-triazacyclononane (TACN ), 1, 5,9-trimethyl 1, 5,9-triazacyclododecane (Me-TACD), 2-methyl-1, 4,7-trimethyl-1,4-triazacyclononane (Me / Me-TACN) and / or 2-methyl-1, 4,7- triazacyclononane (Me / TACN). Suitable manganese complexes are, for example, [ ^{Μη ΜΙ} 2 (μ-0) ι (μ-ΟΑο) 2 (ΤΑΟΝ) 2] (ΟΙθ4) 2, [Μη "'Μη' ^ν (μ-O) 2 (μ-OAc) ₁ ( TACN) ₂ ] (BPh ₄ ) ₂ , [Μη ' ^ν 4 (μ-Ο) 6 (ΤΑ0Ν) ₄ ] (0Ιθ4) 4, [ ^{Μη ΙΜ} 2 (μ-0) ι (μ-ΟΑο) 2 (Μ ^β -ΤΑΟΝ) ₂ ] (ΟΙθ4) 2, [ ^{Μη ΜΙ Μηιν} (μ-0) ι (μ-ΟΑο) 2 (Μβ-ΤΑΟΝ) 2] (ΟΙθ4) 3, and [Μη ^'ν ₂ (μ- 0) 3 (Me / Me-TACN) _2] (PF ₆₎ 2 (OAc = OC (0) _CH3).

Furthermore, the dishwashing agents according to the invention can contain a bleach catalyst selected from the group of bleach-enhancing transition metal salts and transition metal complexes, preferably from the group of complexes of manganese with 1, 4,7-trimethyl-1, 4,7-triazacyclononane (Me3-TACN) or 1, 2, 4,7-tetramethyl-1, 4,7-triazacyclononan (Μβ4 TACN), are preferred according to the invention, since in particular the cleaning result can be significantly improved by the aforementioned bleach catalysts.

The aforementioned bleach-enhancing transition metal complexes, in particular with the central atoms Mn and Co, are used in customary amounts, preferably in an amount of up to 5% by weight, in particular of 0.0025% by weight to 1% by weight and more preferably of 0, 01 wt .-% to 0.30 wt .-%, each based on the total weight of the bleach catalyst-containing agents used. In special cases, however, more bleach catalyst can be used.

According to the invention, the cleaning agent preferably further comprises one or more corrosion inhibitors. Corrosion inhibitors serve to protect the items to be washed or the machine, with particular silver protectants being of particular importance in the field of automatic dishwashing. It is possible to use the known substances of the prior art. In general, silver protectants selected from the group of the triazoles, the benzotriazoles, the bisbenzotriazoles, the aminotriazoles, the alkylaminotriazoles and the transition metal salts or complexes can be used in particular. Particularly preferred to use are benzotriazole and / or alkylaminotriazole. Examples of 3-amino-5-alkyl-1, 2,4-triazoles preferably used according to the invention which may be mentioned are: propyl, butyl, pentyl, heptyl, octyl, nonyl, decyl -, - Undecyl-, -Dodecyl-, -Isononyl-, Versatic-10-säu-realkyl-, -phenyl-, -p-tolyl-, - (4-tert-butylphenyl) -, - (4-Methoxyphenyl) -, - (2-, 3-, 4-pyridyl) -, - (2-thienyl) -, - (5-methyl-2-fury1) -, - (5-oxo-2-pyrrolidinyl) -, 3-amino-1, 2,4-triazole. In dishwashing agents, the alkylamino-1, 2,4-triazoles or their physiologically tolerable salts in a concentration of 0.001 to 10 wt.%, Preferably 0.0025 to 2 wt.%, Particularly preferably 0.01 to 0.04 % By weight used. Preferred acids for salt formation are hydrochloric acid, sulfuric acid, phosphoric acid, carbonic acid, sulphurous acid, organic carboxylic acids such as acetic, glycolic, citric, succinic acid. Especially effective are 5-pentyl, 5-heptyl, 5-nonyl, 5-undecyl, 5-isononyl, 5-versatic-10-acid alkyl 1-3-amino-1, 2,4-triazoles and mixtures of these substances. In addition, cleaner formulations often contain active chlorine-containing agents which can markedly reduce the corrosion of the silver surface. In chlorine-free cleaners, especially oxygen- and nitrogen-containing organic redox-active compounds, such as di- and trihydric phenols, for example hydroquinone, pyrocatechol, hydroxyhydroquinone, gallic acid, phloroglucinol, pyrogallol or derivatives of these classes of compounds are used. Also, compound and complex inorganic compounds such as salts of the metals Mn, Ti, Zr, Hf, V, Co and Ce are often used. Preferred here are the transition metal salts which are selected from the group of manganese and / or cobalt salts and / or complexes, particularly preferably the cobalt (amine) complexes, the cobalt (acetate) complexes, the cobalt (carbonyl) - Complexes, the chlorides of cobalt or manganese and manganese sulfate. Also, zinc compounds can be used to prevent corrosion on the items to be washed.

Instead of or in addition to the silver protectants described above, for example the benzotriazoles, redox-active substances can be used. These substances are preferably inorganic redox-active substances from the group of manganese, titanium, zirconium, hafnium, vanadium, cobalt and cerium salts and / or complexes, wherein the metals preferably in one of the oxidation states II, III, IV, V or VI are present.

The metal salts or metal complexes used should be at least partially soluble in water. The counterions suitable for salt formation comprise all customary mono-, di- or tri-positively negatively charged inorganic anions, for example oxide, sulfate, nitrate, fluoride, but also organic anions such as, for example, stearate. Metal complexes in the context of the invention are compounds which consist of a central atom and one or more ligands and optionally additionally one or more of the above-mentioned. Anions exist. The central atom is one of the o.g. Metals in one of the above Oxidation states. The ligands are neutral molecules or anions that are mono- or polydentate; The term "ligands" in the context of the invention is explained in more detail, for example, in "Römpp Chemie Lexikon, Georg Thieme Verlag Stuttgart / New York, 9th edition, 1990, page 2507". If, in a metal complex, the charge of the central atom and the charge of the ligand (s) do not complete to zero, then, depending on whether there is a cationic or an anionic charge surplus, either one or more of the above mentioned obeys. Anions or one or more cations, such as sodium, potassium, ammonium ions, for the charge balance. Suitable complexing agents are, for example, citrate, acetylacetonate or 1-hydroxyethane-1,1-diphosphonate.

The definition of "oxidation state" which is common in chemistry is reproduced, for example, in "Römpp Chemie Lexikon, Georg Thieme Verlag Stuttgart / New York, 9th edition, 1991, page 3168".

Particularly preferred metal salts and / or metal complexes are selected from the group MnSO 4, Mn (II) citrate, Mn (II) stearate, Mn (II) acetylacetonate, Mn (II) [1-hydroxyethane-1, 1-diphosphonate] , V2O5, V2O4, VO2, TiOS0 ₄ , K ₂ TiF ₆ , K ₂ ZrF ₆ , C0SO 4, Co (NO ₃ ) 2, Ce (NO ₃ ) 3, and mixtures thereof, such that the metal salts and / or metal complexes are selected from the group MnS04 Mn (ll) citrate, Mn (ll) stearate, Mn (II) acetylacetonate, Mn (II) - [1-hydroxyethane-1, 1-di-phosphonate], V2O5, V2O4, VO2, T1OSO4, K ₂ TiF ₆ , K ₂ ZrF ₆ , C0SO 4. Co (NO ₃ ) 2, Ce (NO ₃ ) 3 can be used with particular preference.

These metal salts or metal complexes are generally commercially available substances which can be used for the purpose of silver corrosion protection without prior purification in detergents or cleaners. Thus, for example, the mixture of pentavalent and tetravalent vanadium (V2O5, VO2, V2O4) known from SCb production (contact method) is suitable, as well as the titanyl sulfate resulting from dilution of a Ti (SO4) 2 solution, T1OSO4.

The inorganic redox-active substances, in particular metal salts or metal complexes, are preferably coated, that is to say completely coated with a water-tight material which is readily soluble in the cleaning temperatures, in order to prevent their premature decomposition or oxidation during storage. Preferred coating materials, which are applied by known methods, such as Sandwik from the food industry, are paraffins, microwaxes, waxes of natural origin such as carnauba wax, candellila wax, beeswax, higher melting alcohols such as hexadecanol, soaps or fatty acids. In this case, the coating material which is solid at room temperature is applied in the molten state to the material to be coated, for example by spinning finely divided material to be coated in a continuous stream through a likewise continuously produced spray zone of the molten coating material. The melting point must be selected so that the coating material dissolves easily during the silver treatment or melts quickly. The melting point should ideally be in the range between 45 ° C and 65 ° C and preferably in the range 50 ° C to 60 ° C.

In the present invention, corrosion inhibitors are preferably contained in an amount of 0.05 to 1% by weight, in particular of 0.1 to 0.3% by weight. Preferably, the corrosion inhibitor is zinc acetate.

The active substance combinations described above are particularly suitable for cleaning dishes in automatic dishwashing processes. Another object of the present application is therefore a method for cleaning dishes in a dishwasher using a dishwashing detergent according to the invention, wherein the dishwashing detergent is preferably metered into the interior of a dishwasher during the passage of a dishwasher, before the main wash cycle or in the course of the main wash cycle. The metering or the entry of the agent according to the invention into the interior of the dishwasher can be done manually, but preferably the agent is metered into the interior of the dishwasher by means of the metering chamber of the dishwasher. in the During the cleaning process, preferably no additional water softener and no additional rinse aid are metered into the interior of the dishwasher.

In a further embodiment, the object underlying the invention is achieved by a method for rinsing crockery, cutlery and / or glasses, characterized in that one uses a dishwashing detergent according to the invention.

In a further embodiment, the object underlying the invention is achieved by the use of the dishwashing agent according to the invention for rinsing dishes, cutlery and / or glasses.

embodiments

Example 1: Gloss effect after a few cycles

 To determine the clear rinsing effect, selected and defined dishes are rinsed 4 times and visually scrapped after the 2nd, 3rd and 4th rinsing cycles. The first rinse serves to condition the dishes.

 Rinse-off grades based on the visual appearance of the dry items to be washed (porcelain, glasses, plastic parts and stainless steel) are assigned as parameters. The evaluation takes place in a black box under defined lighting conditions. A tablet is dosed with the formula to be tested and 100 g of soiling are dosed per wash to simulate a normal soiled load.

 The drop pattern (spotting) is determined in the Miele G698 in the normal 50 ° C program with a water hardness of 21 ° dH.

 After completing the rinse cycle, the machine is fully opened for 30 minutes and then the clear rinse effect is visually determined in the black box (black room, D6500 daylight lamp). On the crockery and cutlery remaining dried water droplets, streaks, coverings and films are rated on a scale of 1 to 10. 10 means no movies, 1 means strong filming.

A commercial dishwashing tablet (Somat 10 from Henkel) was used which, unlike the standard, had a content of fatty alcohol polyglycol ether of 6.4% by weight and a content of 0.001 or 0.1% by weight of polyethyleneimine. These tablets according to the invention were compared with respect to their performance in the drop formation with the conventional Somat 10 tablet. The following result was achieved by adding the polymer according to the invention:

 Table 1: Spotting Performance (Miele G698, Normal 50, 21 ° dH)

As can be seen from Table 1, the addition of polyethyleneimine results in reduced droplet formation on metal and glass. Even a 10-fold reduced amount leads to an improvement of 2 notes on metal surfaces, Example 2: Long-term gloss

To determine the long-term gloss, glasses and glass plates were rinsed 100 times in softened water and then visually and gravimetrically examined to determine the degree of glass corrosion. The optical evaluation was carried out on a scale of 1 to 5, with 5 being the best grade. As can be seen, the glasses washed with polyethylenimine or polyvinylamine showed less weight loss and a better optical rating than the glasses rinsed with Somat 10 (containing fatty alcohol polyglycol ether) only.

 In a further experiment, phosphate-free dishwasher tablets PF1 and PF2 were formulated and examined as such as well as with 0.02 g / job polyethylenimine or polyvinylamine in a long-term test as described on the weight loss due to glass corrosion. Again, it was found that the amine polymer-containing formulations caused a significantly lower weight loss:

Product weight loss (mean / g) after 50 rinses after 100 rinses

PF1 0.04 0.07

PF1 + polyethylenimine ^* 0.02 0.04

PF1 + polyvinylamine ^* 0.02 0.05

PF2 0.04 0.12

PF2 + polyethylenimine ^* 0.03 0.07 ""

 24

PF2 + polyvinylamine ^* 0.04 0.09 each 0.02 g / job

The features of the invention disclosed in the present description, in the drawings and in the claims may be essential both individually and in any desired combinations for the realization of the invention in its various embodiments. The invention is not limited to the described embodiments. It can be varied within the scope of the claims and taking into account the knowledge of the person skilled in the art.

Claims

claims

A dishwashing detergent containing an amine polymer, wherein the amine polymer has an amino group at least in 50% of the constitutional repeating units of the polymer, and wherein one or more nonionic surfactants are contained in an amount of at least 1% by weight based on the total weight of the dishwashing detergent.

2. Dishwashing detergent according to claim 1, characterized in that the amino polymer, particularly preferably polyethyleneimine and / or polyvinylamine, in an amount in a range of 0.001 to 10 wt.%, Particularly preferably in a range of 0.005 to 1 wt.%, Whole is particularly preferably contained in a range of 0.01 to 0.2 wt.% Based on the total weight of the dishwashing detergent.

3. Dishwashing detergent according to claim 1 or 2, characterized in that the amino-polymer is a polyethyleneimine which also has primary amino groups.

4. Dishwashing detergent according to claim 1 or 2, characterized in that the amine polymer is a polyvinylamine.

5. dishwashing detergent according to one of claims 1 to 4, characterized in that the amino polymer has a molecular weight M _w in a range of 3000 to 10,000 g / mol.

6. Dishwashing detergent according to one of claims 1 to 5, characterized in that one or more fatty alcohol compounds, particularly preferably fatty alcohol alkoxylate, fatty alcohol, fatty alcohol esters, fatty alcohol ether sulfate or a mixture thereof, in an amount in a range of 1 to 15 wt.%, Particularly preferred are contained in a range of 3 to 10 wt.% Based on the total weight of the dishwashing detergent.

7. Dishwashing detergent according to one of claims 1 to 6, characterized in that the fatty alcohol compound is at least one fatty alcohol polyglycol ether, and this particularly preferably in an amount in a range of 1 to 10 wt.%, Most preferably in a range of 2.5 to 5% by weight, based on the total weight of the dishwashing detergent.

8. Dishwashing detergent according to one of claims 1 to 7, characterized in that the weight ratio between on the one hand Fettalkoholpolyglykolether and on the other hand amino polymer in a range of 20: 1 to 300: 1.

9. Dishwashing detergent according to one of claims 1 to 8, characterized in that it comprises further ingredients, preferably selected from the group of builders, bleaching agents, bleach activators, bleach catalysts, enzymes, polymers, corrosion inhibitors and mixtures thereof.

10. Dishwashing detergent according to one of claims 1 to 9, characterized in that it is present as a shaped body, particularly preferably as a detergent tablet.

1 1. A method for rinsing dishes, cutlery and / or glasses, characterized in that one uses a dishwashing detergent according to one of claims 1 to 10.

12. Use of the dishwashing agent according to one of claims 1 to 10 for washing dishes, cutlery and / or glasses in a dishwasher.