DE102011007695A1 - Phosphate-free dishwashing detergent - Google Patents

Abstract

In the case of a phosphate-free dishwashing detergent, the deposit inhibition should be improved. This is achieved with a phosphate-free dishwashing detergent that comprises a pectin-splitting enzyme and at least one other ingredient.

Description

The invention is in the field of dishwashing detergents. The invention relates in particular to phosphate-free dishwashing detergents and to processes in which such agents are used. The invention further relates to uses of such agents.

Dishwashing detergents are available to the consumer in a variety of forms. In addition to the traditional liquid hand dishwashing detergents, in particular the automatic dishwashing detergents have gained great importance with the spread of household dishwashers. These automatic dishwashing agents are typically offered to the consumer in solid form, for example as powders or as tablets, but increasingly also in liquid form. One of the major objectives of the machine cleaners manufacturers is to improve the cleaning and rinse performance of these compositions, with more emphasis being placed recently on the cleaning and rinse performance in low temperature or reduced water consumption cleaning cycles.

However, most dishwashing detergents known from the prior art, in particular automatic dishwasher detergents, contain phosphates. While phosphates are highly valued for their beneficial effect as a component of automatic dishwashing detergents, their use is problematic from an environmental point of view, since a substantial portion of the phosphate enters the water via household wastewater and especially in stagnant water (lakes, barrages). a questionable role in their over-fertilization plays. As a result of this phenomenon, also referred to as eutrophication, the use of pentasodium triphosphate in laundry detergents in a number of countries, e.g. As USA, Canada, Italy, Sweden, Norway, considerably reduced by law and u. completely prohibited in Switzerland. In Germany, detergents since 1984 may contain no more than 20% of this builder.

In addition to nitrilotriacetic acid, especially sodium aluminosilicates (zeolites) are used as phosphate substitutes or substitutes in textile detergents. However, these substances are not suitable for use in automatic dishwashing detergents. It is therefore an objective of the machine cleanser manufacturers to develop phosphate reduced or, ideally, phosphate free compositions.

For example, in the international patent application WO 2008/132133 A1 discloses a phosphate-free automatic dishwashing detergent. Phosphate-free automatic dishwashing detergents which, in addition to a citrate, furthermore contain carbonates, bleaches and enzymes are described, for example, in the European patents EP 662 117 B1 and EP 692 020 B1 described.

Despite their previous efforts, however, the manufacturers of automatic dishwashing detergents have hitherto not been able to provide phosphate-free automatic dishwashing detergents which are comparable or even exceed phosphate-containing dishwashing detergents in terms of their cleaning and rinsing performance and, in particular, their coating-inhibiting performance. It is particularly disadvantageous in the case of phosphate-free dishwashing detergents that there are more and more deposits left on dishes and glasses. These coverings manifest themselves in particular when the dishes or the glasses are rinsed several rinses (rinsing cycles) with a phosphate-free dishwashing detergent. Furthermore, the use of phosphate-free dishwashing detergents leads to increased vegetable residues in dishwashers.

The present invention has the object to overcome the disadvantages mentioned and to provide a phosphate-free dishwashing detergent with an improved coating inhibition.

The invention relates to a phosphate-free dishwashing detergent which is characterized in that it comprises a pectin-splitting enzyme and at least one further ingredient.

It has been found that by using a dishwasher detergent according to the invention, the increased deposit formation observed with phosphate-free compositions occurs to a reduced extent. Preferred embodiments of compositions according to the invention furthermore show an improved cleaning performance on at least one, preferably on several soils, in particular at low temperatures and / or during short rinses. A low temperature in the context of the invention is preferably between 10 ° C and 45 ° C, preferably between 15 ° C and 35 ° C and more preferably between 20 ° C and 30 ° C before. A short rinse preferably lasts for a maximum of 60 minutes, 45 minutes or only a maximum of 30 minutes. Further preferred embodiments of compositions according to the invention also show improved rinse performance. Further preferred embodiments of dishwasher detergent according to the invention, in particular by machine Dishwashing agents cause a reduction of the residues, in particular of the fruit-based residues, in particular in the machine screen, in particular at low temperatures and / or during short rinses.

Pectin-splitting enzymes (pectinases) in the context of the invention are enzymes which cleave pectins and / or other galacturonans. Pectins are polysaccharides whose main constituent is α-D-galacturonic acid as a monomer, preferably at least 50% by weight and more preferably at least 65% by weight. These galacturonic acid monomers are linked together via α-1,4-, sometimes even to a small extent via β-1,4-glycosidic bonds, and form the backbone of the pectin molecule, which is periodically linked by 1,2-bonds with α-L -Rhamnose is interrupted. A pectin is thus a rhamno-galacturonic acid. Thus, a pectin-cleaving enzyme is particularly an enzyme that catalyzes the hydrolysis of 1,4-α-D-galactosiduronic bonds.

Within the EC classification of enzymes, the numerical classification system for enzymes, the pectin-cleaving enzymes are in particular belonging to the enzyme classes EN 3.1.1.11, EC 3.2.1.15, EC 3.2.1.67 and EC 3.2.1.82 and therefore belong to the third of the six main enzyme classes, the hydrolases (EC 3.-.-.-), below to the glycosylases (EC 3.2.-.-) and in turn to the glycosidases (EC 3.2.1.-). ), d. H. Enzymes that hydrolyze O- and / or S-glycosyl compounds. Thus, pectin-splitting enzymes act particularly against residues on dishes containing pectic acid and / or other galacturonans and catalyze their hydrolysis.

The pectin-destroying enzymes in the context of the present invention are also counted enzymes with the designations pectinase, pectate lyase, pectin esterase, pectin methoxylase, pectin methoxylase, pectin methyl esterase, pectase, pectin methyl esterase, pectin esterase, pectin-pectin hydrolase, pectin-polymerase, endopolygalacturonase, pectolase, pectin hydrolase, pectin-polygalacturonase, Endo-polygalacturonase, poly-α-1,4-galacturonide glycanohydrolase, endogalacturonase, endo-D-galacturonase, galacturan 1,4-α-galacturonidase, exopolygalacturonase, poly (galacturonate) hydrolase, exo-D-galacturonase, exo-D Galacturonanase, exopoly-D-galacturonase, exo-poly-α-galacturonosidase, exopolygalacturonosidase or exopolygalacturanosidase.

Examples in this regard, suitable enzymes for example, under the name Gamanase ^®, Pektinex AR ^®, X-Pect ^® or Pectaway ^® by the company Novozymes, UF under the name Rohapect ^®, Rohapect TPL ^®, Rohapect PTE100 ^®, Rohapect MPE ^®, Rohapect MA available plus HC, Rohapect DA12L ^®, Rohapect 10L ^®, Rohapect B1L ^® by the company AB Enzymes and under the name Pyrolase® ^® by the company Diversa Corp., San Diego, CA, United States.

A dishwasher detergent according to the invention further comprises at least one further ingredient. Basically, this can be any connection. Preferably, this is an ingredient that is established for use in dishwashing detergents, and more preferably an ingredient as indicated below.

The cleaning performance describes the ability of a dishwashing detergent, in particular a dishwasher detergent, to partially or completely remove an existing soiling. In the context of the invention, both the dishwashing detergent, which comprises the enzyme which blocks the pectin, or the cleaning liquor formed by this agent, and the pectin-splitting enzyme itself have a respective cleaning performance. The cleaning performance of the enzyme thus contributes to the cleaning performance of the agent or the cleaning liquor formed by the agent.

Cleaning liquor is understood to be the use solution containing the dishwashing detergent which acts on the hard surfaces and thus comes into contact with the soiling present on the hard surfaces. Usually, the cleaning liquor is formed when the cleaning process begins and the dishwashing detergent is diluted, for example, in a dishwasher or in another suitable container with water.

An inventive dishwashing detergent increasingly contains the pectin-splitting enzyme in an amount of 1 × 10 ^-8 -5% by weight, from 0.00001-1% by weight, from 0.00005-0.5% by weight. , from 0.0001 to 0.1% by weight, and more preferably from 0.0001 to 0.05% by weight, based on the total protein content of the pectin-splitting enzyme. The protein concentration can be determined by known methods, for example the BCA method (bicinchoninic acid, 2,2'-biquinolyl-4,4'-dicarboxylic acid) or the biuret method ( Gornall AG, CS Bardawill and MM David, J. Biol. Chem., 177 (1948), pp. 751-766 ). The activity of the pectin-splitting enzyme is determined in this way in the usual way. For example, can the determination of activity by the measurement of the viscosity of a substrate solution, such as pectic acid, carried out (according to PJ Mill et al., Biochem. J. 79 (1961), pp. 57-64 ).

The pectin-cleaving enzyme may also be adsorbed to carriers and / or embedded in encapsulating substances to protect it against premature inactivation. In the cleaning liquor, ie under conditions of use, the enzyme is then released and can develop its catalytic effect.

In a preferred embodiment of the invention, a dishwashing agent according to the invention is a machine dishwashing detergent. Automatic dishwashing detergents, according to this application, are compositions which can be used to clean soiled dishes in a dishwasher automatic dishwashing process. 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.

On machine-washed dishes are often made higher demands than manually rinsed dishes. So the dishes after machine cleaning should not only be free from food debris, but also, for example, have no whitish, based on water hardness or other mineral salts stains that come from lack of wetting agent from dried water droplets. Modern automatic dishwashing detergents meet these requirements by integrating cleansing and / or caring and / or water-softening and / or clear-rinse active ingredients and are known to the consumer, for example, as "2in1" or "3in1" dishwashing detergents. Machine dishwasher detergents contain builders as a constituent of the cleaning and rinse aid success. On the one hand, these builders increase the alkalinity of the cleaning liquor, whereby fats and oils are emulsified and saponified with increasing alkalinity, and on the other hand reduce the water hardness of the cleaning liquor by complexing the calcium ions contained in the aqueous liquor.

In a further embodiment of the invention, the dishwashing detergent is characterized in that it is in solid form. This is understood to mean any solid form of preparation, for example powders, granules or extrudates.

A pulverulent composition according to the invention can be present, for example, as a free-flowing powder, in particular with a bulk density of 300 g / l to 1200 g / l, in particular 500 g / l to 900 g / l or 600 g / l to 850 g / l.

The dishwashing agents according to the invention, in particular the automatic dishwashing agents, are preferably in the form of a shaped body, in particular a compactate, in particular a tablet. 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 dishwasher detergents according to the invention, in particular the prefabricated dosage units, in a preferred embodiment have a water-soluble coating.

The preparation of solid compositions according to the invention presents no difficulties and can be carried out in a known manner, for example by spray-drying or granulation, enzymes and possibly other thermally sensitive ingredients such as, for example, bleaching agents optionally being added separately later. For the preparation of inventive compositions having an increased bulk density, in particular in the range from 650 g / l to 950 g / l, a process comprising an extrusion step is preferred.

The production of moldings 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 compressing 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.

• – Verwendung von Kunststoffeinlagen mit geringen Dickentoleranzen
• – Geringe Umdrehungszahl des Rotors
• – Große Füllschuhe
• – Abstimmung des Füllschuhflügeldrehzahl auf die Drehzahl des Rotors
• – Füllschuh mit konstanter Pulverhöhe
• – Entkopplung von Füllschuh und Pulvervorlage

When tableting with rotary presses, it has proven to be advantageous to carry out the tableting with the lowest possible weight fluctuations of the tablet. In this way, the hardness fluctuations of the tablet can be reduced. The minimization of weight variations can be achieved in the following ways:

• - Use of plastic inserts with small thickness tolerances
• - Low number of revolutions of the rotor
• - Big filling shoes
• - Matching of the Füllschuhflügeldrehzahl on the speed of the rotor
• - filling shoe with constant powder height
• - Decoupling of filling shoe and powder template

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.

According to the invention, it has surprisingly been found that granules used to produce the shaped bodies can be pressed particularly well. Thus, compacts having a hardness in the range from 150 to 250 N, in particular in the range from 200 to 230 N, which in addition is a particularly good one, can preferably be obtained by using a pressing force of 40 to 65 kN, more preferably 48 to 60 kN Have trickle behavior. The granules can thus preferably be pressed with relatively low pressing force into compact materials having a relatively high hardness, which moreover preferably have a very good trickling behavior. Accordingly, it is conversely advantageous for the production of compact materials of lower hardness preferably a lower pressing force must be used, as for the production of conventional compactates.

Compositions according to the invention, in particular shaped bodies, contain polyvinylpyrrolidone particles in a further preferred embodiment. These particles facilitate, inter alia, the disintegration of the moldings and serve insofar as disintegration aids or tablet disintegrating agents. It has been found according to the invention to be particularly advantageous to use polyvinylpyrrolidone particles having an average particle diameter of 100 to 150 .mu.m, in particular having an average particle diameter of 110 to 130 .mu.m.

For the purposes of the present invention, the term "average particle diameter" or "average diameter" is to be understood as meaning the volume-average D ₅₀ particle diameter which can be determined by customary methods. The volume average D ₅₀ particle diameter is that point in the particle size distribution in which 50% by volume of the particles have a smaller diameter and 50% by volume of the particles have a larger diameter. The average particle diameters can be determined in particular by means of dynamic light scattering, which is usually carried out on dilute suspensions, z. B. 0.01 to 1 wt .-% particles is carried out.

Particularly preferably, the PVP particles not only have an average particle diameter of 100 to 150 .mu.m, in particular from 110 to 130 .mu.m, but moreover, the particle size of the particles used is preferably completely in 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 in compositions of the invention, in particular moldings, preferably in an amount of 0.1 to 5 wt .-%, in particular in an amount of 0.2 to 3 wt .-%, especially in an amount of 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 compositions according to the invention, in particular moldings, 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 as well as 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.

In a further embodiment of the invention, the dishwashing detergent is characterized in that it is in liquid, gel or pasty form.

In this case, all liquid or flowable administration forms can serve as liquid detergents or cleaners. "Flowable" in the sense of the present application are agents which are pourable and may have viscosities up to several tens of thousands of mPas. The viscosity can be measured by conventional standard methods (for example, Brookfield LVT-II viscosimeter at 20 rpm and 20 ° C., spindle 3) and is preferably in the range from 5 to 10,000 mPas. Preferred agents have viscosities of 10 to 8000 mPas, with values between 120 to 3000 mPas being particularly preferred. A liquid washing or cleaning agent in the context of the present invention may therefore also be gelatinous or paste-like, it may be present as a homogeneous solution or suspension, as well as be sprayed or formulated in other conventional dosage forms.

Liquid or pasty compositions according to the invention in the form of customary solvent-containing solutions are generally prepared by simply mixing the ingredients, which can be added in bulk or as a solution in an automatic mixer.

Embodiments of the present invention thus comprise all solid, powdered, liquid, gelatinous or paste-like administration forms of the agents, which if appropriate can also consist of several phases and can be present in compressed or uncompressed form. An agent according to the invention can also be packaged in a container, preferably an air-permeable container, from which it is released shortly before use or during the cleaning process.

In a further embodiment of the invention, an agent according to the invention is characterized in that the further ingredient is selected from the group consisting of builder, bleach, bleach activator, bleach catalyst, surfactant, anionic polymer and combinations thereof.

Preferably, the ingredients of the agents are matched. Synergies with regard to the cleaning performance and / or the rinse aid performance and / or the deposit inhibition are preferred. Particularly preferred are synergies which are present in a temperature range between 10 ° C and 60 ° C, in particular in a temperature range of 10 ° C to 50 ° C, from 10 ° C to 40 ° C, from 10 ° C to 30 ° C. , from 15 ° C to 30 ° C from 10 ° C to 25 ° C and from 15 ° C to 25 ° C.

The group of preferred builders includes, in particular, the citrates and also the carbonates and the organic cobuilders. The term "citrate" also includes citric acid as well as its salts, in particular their alkali metal salts. Particularly preferred dishwashing agents according to the invention, in particular automatic dishwasher detergents, contain citric acid and citrate, preferably sodium citrate, in amounts of 5 to 60% by weight, preferably 10 to 50% by weight and in particular 15 to 40% by weight.

Particularly preferred is the use of carbonate (s) and / or bicarbonate (s), preferably alkali metal carbonate (s), more preferably sodium carbonate, in amounts of 5 to 50 wt .-%, preferably from 10 to 40 wt .-% and in particular from 15 to 30 wt .-%, each based on the weight of the dishwashing detergent.

Particularly suitable organic co-builders are polycarboxylates / polycarboxylic acids and phosphonates. These classes of substances are described below.

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, adipic acid, succinic acid, glutaric acid, malic acid, tartaric acid, maleic acid, fumaric acid, sugar acids, aminocarboxylic acids, nitrilotriacetic acid (NTA) and mixtures thereof. In addition to their builder effect, the free acids also typically have the property of an acidifying component and thus also serve to establish a lower and milder pH of agents according to the invention. In particular, succinic acid, glutaric acid, adipic acid, gluconic acid and any mixtures of these may be mentioned here.

In addition to 1-hydroxyethane-1,1-diphosphonic acid, the complex-forming phosphonates comprise a number of different compounds such as, for example, diethylenetriaminepenta (methylenephosphonic acid) (DTPMP). Hydroxyalkane or aminoalkane phosphonates are particularly preferred in this application. Among the hydroxyalkane phosphonates, 1-hydroxyethane-1,1-diphosphonate (HEDP) is of particular importance as a co-builder. It is preferably used as the sodium salt, the disodium salt neutral and the tetrasodium salt alkaline (pH 9). Preferred aminoalkanephosphonates are ethylenediamine tetramethylenephosphonate (EDTMP), diethylenetriaminepentamethylenephosphonate (DTPMP) and their higher homologs. They are preferably in the form of neutral sodium salts, eg. B. as the hexasodium salt of EDTMP or as hepta- and octa-sodium salt of DTPMP used. The builder used here is preferably HEDP from the class of phosphonates. The aminoalkanephosphonates also have a pronounced heavy metal binding capacity. Accordingly, in particular if the agents also contain bleach, it may be preferable to use aminoalkanephosphonates, in particular DTPMP, or to use mixtures of the phosphonates mentioned.

• a) Aminotrimethylenphosphonsäure (ATMP) und/oder deren Salze;
• b) Ethylendiamintetra(methylenphosphonsäure) (EDTMP) und/oder deren Salze;
• c) Diethylentriaminpenta(methylenphosphonsäure) (DTPMP) und/oder deren Salze;
• d) 1-Hydroxyethan-1,1-diphosphonsäure (HEDP) und/oder deren Salze;
• e) 2-Phosphonobutan-1,2,4-tricarbonsäure (PBTC) und/oder deren Salze;
• f) Hexamethylendiamintetra(methylenphosphonsäure) (HDTMP) und/oder deren Salze;
• g) Nitrilotri(methylenphosphonsäure) (NTMP) und/oder deren Salze.

A dishwashing agent preferred in the context of this application, in particular automatic dishwasher detergent, contains one or more phosphonate (s) from the group

• a) aminotrimethylenephosphonic acid (ATMP) and / or salts thereof;
• b) ethylenediaminetetra (methylenephosphonic acid) (EDTMP) and / or salts thereof;
• c) diethylenetriamine penta (methylenephosphonic acid) (DTPMP) and / or salts thereof;
• d) 1-hydroxyethane-1,1-diphosphonic acid (HEDP) and / or salts thereof;
• e) 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC) and / or salts thereof;
• f) hexamethylenediaminetetra (methylenephosphonic acid) (HDTMP) and / or salts thereof;
• g) nitrilotri (methylenephosphonic acid) (NTMP) and / or salts thereof.

Particularly preferred are automatic dishwashing detergents which contain as phosphonates 1-hydroxyethane-1,1-diphosphonic acid (HEDP) or diethylenetriaminepenta (methylenephosphonic acid) (DTPMP).

Furthermore, the dishwashing agents according to the invention, in particular automatic dishwasher detergents, may contain two or more different phosphonates.

The proportion by weight of the phosphonates in the total weight of dishwashing agents according to the invention, in particular automatic dishwashing detergent, is preferably from 1 to 8% by weight, preferably from 1.2 to 6% by weight and in particular from 1.5 to 4% by weight.

Dishwashing agents according to the invention, in particular automatic dishwasher detergents, may contain bleaching agents, oxygen bleaching agents being preferred according to the invention.

Among the compounds serving as bleaches in water H ₂ O ₂ , sodium percarbonate, sodium perborate tetrahydrate and sodium perborate monohydrate are of particular importance. Other useful bleaching agents are, for example, peroxypyrophosphates, citrate perhydrates and H ₂ O ₂ -forming peracidic salts or peracids, such as perbenzoates, peroxophthalates, diperazelaic acid, phthaloiminoperacid or diperdodecanedioic acid. It is also possible to use bleaching agents from the group of organic bleaching agents be used. Typical organic bleaching agents are the diacyl peroxides, such as. B. dibenzoyl peroxide. Other typical organic bleaches are the peroxyacids, examples of which include the alkyl peroxyacids and the aryl peroxyacids.

Preferred phosphate-free dishwashing detergents are characterized in that the dishwashing detergent, based in each case on the total weight of the dishwashing detergent, contains 1.0 to 20% by weight, preferably 2 to 15% by weight and in particular 4 to 12% by weight sodium percarbonate.

Dishwashing agents according to the invention, in particular automatic dishwashing detergents, may also contain bleach activators, for example to achieve an improved bleaching action when cleaning at temperatures of 60 ° C. and below. As bleach activators, it is possible to use compounds which, under perhydrolysis conditions, give aliphatic peroxycarboxylic acids having preferably 1 to 10 C atoms, in particular 2 to 4 C atoms, and / or optionally substituted perbenzoic acid. Suitable substances are those which carry O- and / or N-acyl groups of the stated C atom number and / or optionally substituted benzoyl groups. Preference is given to polyacylated alkylenediamines, with tetraacetylethylenediamine (TAED) having proven particularly suitable.

These bleach activators, in particular TAED, are preferably used in amounts of up to 10% by weight, in particular 0.1% by weight to 8% by weight, especially 2 to 8% by weight and more preferably 2 to 6% by weight. , in each case based on the total weight of the bleach activator-containing agents used.

In addition to the bleach activators or in their place, so-called bleach catalysts can also be used. These substances are preferably 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-1,4,7-triazacyclononane (Me / Me-TACN) and or 2-methyl-1,4,7-triazacyclononane (Me / TACN). Suitable manganese complexes are, for example, [Mn ^III ₂ (μ-O) ₁ (μ-OAc) ₂ (TACN) ₂ ] (ClO ₄ ) ₂ , [Mn ^III Mn ^IV (μ-O) ₂ (μ-OAc) ₁ (TACN ) ₂ ] (BPh ₄ ) ₂ , [Mn ^IV ₄ (μ-O) ₆ (TACN) ₄ ] (ClO ₄ ) ₄ , [Mn ^III ₂ (μ-O) ₁ (μ-OAc) ₂ (Me-TACN ) ₂ ] (ClO ₄ ) ₂ , [Mn ^III Mn ^IV (μ-O) ₁ (μ-OAc) ₂ (Me-TACN) ₂ ] (ClO ₄ ) ₃ , [Mn ^IV ₂ (μ-O) ₃ ( Me-TACN) ₂ ] (PF ₆ ) ₂ and [Mn ^IV ₂ (μ-O) ₃ (Me / Me-TACN) ₂ ] (PF ₆ ) ₂ (OAc = OC (O) CH ₃ ).

Dishwashing detergent, in particular automatic dishwashing detergent, characterized in that it further comprises 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 (Me _3- TACN) or 1,2,4,7-tetramethyl-1,4,7-triazacyclononane (Me ₄ -TACN) are preferred according to the invention, since in particular the cleaning result can be significantly improved by the abovementioned bleach catalysts.

The abovementioned bleach-enhancing transition metal complexes, in particular having the central atoms Mn and Co, are preferably used 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% by weight. % 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.

Dishwashing agents according to the invention, in particular automatic dishwasher detergents, may contain one or more surfactants, in particular anionic surfactants, nonionic surfactants and mixtures thereof.

Preferred among the anionic surfactants are those which have at least one sulfate or sulfonate group. The anionic surfactant having at least one sulfate or sulfonate group is preferably selected from fatty alcohol sulfates, alkanesulfonates and alkylbenzenesulfonates. Preference is given here C ₁₂ -C ₁₈ fatty alcohol sulfates (FAS), z. Sulfopone K 35 (Cognis, Germany), secondary C ₁₃ -C ₁₇ alkanesulfonates (SAS), e.g. B. Hostapur SAS 93 (Clariant, Germany), and linear C8-C18 alkylbenzenesulfonates, in particular dodecylbenzenesulfonate (LAS).

According to the invention, the terms "sulfate" and "sulfonate" in addition to the relevant anionic compounds which are present in the form of salts, also include the free acids, ie the corresponding alkyl sulfuric acids or alkylsulfonic acids.

Preferably, the anionic surfactant having at least one sulfate or sulfonate group in dishwashing compositions according to the invention in an amount of 0.1 to 20 wt .-%, more preferably, 0.5 to 15 wt .-%, in particular 2.5 to 10 Wt .-%, contained.

As nonionic surfactants, it is possible to use all nonionic surfactants known to the person skilled in the art. Suitable nonionic surfactants are, for example, alkyl glycosides of the general formula RO (G) _x in which R is a primary straight-chain or methyl-branched, in particular 2-methyl-branched aliphatic radical having 8 to 22, preferably 12 to 18 carbon atoms and G is the symbol which is a glycose unit having 5 or 6 C atoms, preferably glucose. The degree of oligomerization x, which indicates the distribution of monoglycosides and oligoglycosides, is any number between 1 and 10; preferably x is 1.2 to 1.4.

Another class of preferred nonionic surfactants used either as the sole nonionic surfactant or in combination with other nonionic surfactants are alkoxylated, preferably ethoxylated or ethoxylated and propoxylated fatty acid alkyl esters, preferably having from 1 to 4 carbon atoms in the alkyl chain.

Nonionic surfactants of the amine oxide type, for example N-cocoalkyl-N, N-dimethylamine oxide and N-tallowalkyl-N, N-dihydroxyethylamine oxide, and the fatty acid alkanolamides may also be suitable. The amount of these nonionic surfactants is preferably not more than that of the ethoxylated fatty alcohols, especially not more than half thereof.

in der R für einen aliphatischen Acylrest mit 6 bis 22 Kohlenstoffatomen, R¹ für Wasserstoff, einen Alkyl- oder Hydroxyalkylrest mit 1 bis 4 Kohlenstoffatomen und [Z] für einen linearen oder verzweigten Polyhydroxyalkylrest mit 3 bis 10 Kohlenstoffatomen und 3 bis 10 Hydroxylgruppen steht. Bei den Polyhydroxyfettsäureamiden handelt es sich um bekannte Stoffe, die üblicherweise durch reduktive Aminierung eines reduzierenden Zuckers mit Ammoniak, einem Alkylamin oder einem Alkanolamin und nachfolgende Acylierung mit einer Fettsäure, einem Fettsäurealkylester oder einem Fettsäurechlorid erhalten werden können.Further suitable surfactants are polyhydroxy fatty acid amides of the formula

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

in der R für einen linearen oder verzweigten Alkyl- oder Alkenylrest mit 7 bis 12 Kohlenstoffatomen, R¹ für einen linearen, verzweigten oder zyklischen Alkylrest oder einen Arylrest mit 2 bis 8 Kohlenstoffatomen und R² für einen linearen, verzweigten oder zyklischen Alkylrest oder einen Arylrest oder einen Oxy-Alkylrest mit 1 bis 8 Kohlenstoffatomen steht, wobei C_1-4-Alkyl- oder Phenylreste bevorzugt sind und [Z] für einen linearen Polyhydroxyalkylrest steht, dessen Alkylkette mit mindestens zwei Hydroxylgruppen substituiert ist, oder alkoxylierte, vorzugsweise ethoxylierte oder propxylierte Derivate dieses Restes.The group of polyhydroxy fatty acid amides also includes compounds of the formula

R is a linear or branched alkyl or alkenyl radical having 7 to 12 carbon atoms, R ^{1 is} a linear, branched or cyclic alkyl radical or an aryl radical having 2 to 8 carbon atoms and R ^{2 is} a linear, branched or cyclic alkyl radical or an aryl radical or an oxyalkyl radical having 1 to 8 carbon atoms, with C _1-4 alkyl or phenyl radicals being preferred and [Z] being a linear polyhydroxyalkyl radical whose alkyl chain is substituted by at least two hydroxyl groups, or alkoxylated, preferably ethoxylated or propoxylated Derivatives of this residue.

[Z] is preferably obtained by reductive amination of a reduced sugar, for example glucose, fructose, maltose, lactose, galactose, mannose or xylose. The N-alkoxy- or N-aryloxy-substituted compounds can be converted into the desired polyhydroxy fatty acid amides by reaction with fatty acid methyl esters in the presence of an alkoxide as catalyst.

Low-foaming nonionic surfactants are used as preferred surfactants. Particular preference is given to washing or cleaning agents, in particular detergents for dishwashing and, preferably, automatic dishwashing, nonionic surfactants from the group of alkoxylated alcohols. The nonionic surfactants used are preferably alkoxylated, advantageously ethoxylated, in particular primary, alcohols having preferably 8 to 18 carbon atoms and on average 1 to 12 moles of ethylene oxide (EO) per mole of alcohol, in which the alcohol radical 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 with linear radicals of alcohols of native origin having 12 to 18 carbon atoms, for. 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, C _12-14 alcohols with 3 EO or 4 EO, C _9-11 alcohols with 7 EO, C _13-15 alcohols with 3 EO, 5 EO, 7 EO or 8 EO, C _12-18 alcohols with 3 EO, 5 EO or 7 EO and mixtures of these, such as mixtures of C _12-14 -alcohol with 3 EO and C _12-18 -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 range ethoxylates, NRE). In addition to these nonionic surfactants, fatty alcohols with more than 12 EO can also be used. Examples include tallow fatty alcohol with 14 EO, 25 EO, 30 EO or 40 EO.

Particular preference is therefore given to ethoxylated nonionic surfactants which consist of C _6-20 monohydroxyalkanols or C _6-20 alkylphenols or C _1-20 fatty alcohols and more than 12 mol, preferably more than 15 mol and in particular more than 20 mol of ethylene oxide per mol Alcohol was used. A particularly preferred nonionic surfactant is obtained from a straight-chain fatty alcohol having 16 to 20 carbon atoms (C _16-20 alcohol), preferably a C ₁₈ -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 range 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 Pa · s, preferably above 35 Pa · s and in particular above 40 Pa · s. Nonionic surfactants which have waxy consistency at room temperature are also preferred.

Nonionic surfactants from the group of alkoxylated alcohols, more preferably from the group of mixed alkoxylated alcohols and in particular from the group of EO-AO-EO-Niotenside, are also used with particular preference.

The nonionic surfactant solid at room temperature preferably has propylene oxide units in the molecule. Preferably, such PO units 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. Particularly preferred nonionic surfactants are ethoxylated monohydroxyalkanols or alkylphenols additionally having 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. Preferred agents are characterized in that they contain ethoxylated and propoxylated nonionic surfactants in which the propylene oxide units in the molecule up to 25 wt .-%, preferably up to 20 wt .-% and in particular up to 15 wt .-% of the total molecular weight of the nonionic Make up surfactants.

Preferably used surfactants come from the groups of alkoxylated nonionic surfactants, in particular the ethoxylated primary alcohols and mixtures of these surfactants with structurally complicated surfactants such as polyoxypropylene / polyoxyethylene / polyoxypropylene ((PO / EO / PO) surfactants). Such (PO / EO / PO) nonionic surfactants are also characterized by good foam control.

More particularly preferred nonionic surfactants having melting points above room temperature contain from 40 to 70% of a polyoxypropylene / polyoxyethylene / polyoxypropylene block polymer blend containing 75% by weight of a reverse block copolymer of polyoxyethylene and polyoxypropylene with 17 moles of ethylene oxide and 44 moles of propylene oxide and 25% by weight. % of a block copolymer of polyoxyethylene and polyoxypropylene initiated with trimethylolpropane and containing 24 moles of ethylene oxide and 99 moles of propylene oxide per mole of trimethylolpropane.

bevorzugt, in der R¹ für einen geradkettigen oder verzweigten, gesättigten oder ein- bzw. mehrfach ungesättigten C_6-24-Alkyl- oder Alkenylrest steht; jede Gruppe R² bzw. R³ unabhängig voneinander ausgewählt ist aus -CH₃, -CH₂CH₃, -CH₂CH₂-CH₃, CH(CH₃)₂ und die Indizes w, x, y, z unabhängig voneinander für ganze Zahlen von 1 bis 6 stehen.In the context of the present invention, particularly preferred nonionic surfactants have been low foaming nonionic surfactants which have alternating ethylene oxide and alkylene oxide units. Among these, in turn, surfactants with EO-AO-EO-AO blocks are preferred, wherein in each case one to ten EO or AO groups are bonded to each other before a block of the other groups follows. Here are nonionic surfactants of the general formula

in which R ^{1 is} a straight-chain or branched, saturated or mono- or polyunsaturated C _6-24- alkyl or alkenyl radical; each group R ² or R ^{3 is} independently selected from -CH ₃ , -CH ₂ CH ₃ , -CH ₂ CH ₂ -CH ₃ , CH (CH ₃ ) ₂ and the indices w, x, y, z independently stand for integers from 1 to 6.

The preferred nonionic surfactants of the above formula can be prepared by known methods from the corresponding alcohols R ¹ -OH and ethylene or alkylene oxide. The radical R ¹ in the above formula may vary depending on the origin of the alcohol. When native sources are used, the radical R ^{1 has} an even number of carbon atoms and is usually unbranched, the linear radicals being selected from alcohols of native origin having 12 to 18 C atoms, eg. B. from coconut, palm, tallow or oleyl alcohol, are preferred. Alcohols which are accessible from synthetic sources are, for example, the Guerbet alcohols or methyl-branched or linear and methyl-branched radicals in the 2-position, as they are usually present in oxo alcohol radicals. Irrespective of the type of alcohol used to prepare the nonionic surfactants contained in the compositions, preference is given to nonionic surfactants in which R ¹ in the above formula is an alkyl radical having 6 to 24, preferably 8 to 20, particularly preferably 9 to 15 and in particular 9 to 11 Carbon atoms.

As the alkylene oxide unit which is contained in the preferred nonionic surfactants in alternation with the ethylene oxide unit, in particular butylene oxide is considered in addition to propylene oxide. But also other alkylene oxides in which R ² or R ^{3 are} independently selected from -CH ₂ CH ₂ -CH ₃ or CH (CH ₃ ) ₂ are suitable. Preference is given to using nonionic surfactants of the above formula in which R ² or R ^{3 is} a radical -CH ₃ , w and x independently of one another for values of 3 or 4 and y and z independently of one another are values of 1 or 2.

In summary, particularly preferred are nonionic surfactants having a C _9-15 alkyl group having 1 to 4 ethylene oxide units followed by 1 to 4 propylene oxide units followed by 1 to 4 ethylene oxide units followed by 1 to 4 propylene oxide units. These surfactants have the required low viscosity in aqueous solution and can be used according to the invention with particular preference.

Surfactants of the general formula R ^{1 is} -CH (OH) CH ₂ O- (AO) _w - (A'O) _x - (A''O) _y (A '''O) _z -R ² , in which R ¹ and R ² independently of one another represent a straight-chain or branched, saturated or mono- or polyunsaturated C _2-40 -alkyl or -alkenyl radical; A, A ', A''andA''' are independently of one another a radical from the group -CH ₂ CH ₂ , -CH ₂ CH ₂ -CH ₂ , -CH ₂ -CH (CH ₃ ), -CH ₂ - CH _{2 is} -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 can also be 0, are particularly preferred according to the invention.

Very particular preference is given here to nonionic surfactants of the general formula R ¹ O [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 which R ^{1 is} a linear or branched aliphatic hydrocarbon radical having 4 to 22, in particular 6 to 18, carbon atoms or mixtures thereof, R ^{2 is} a linear or branched hydrocarbon radical having 2 to 26, in particular 4 to 20, Carbon atoms or mixtures thereof and x and z are 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 dishwashing detergent, in particular the automatic dishwashing detergent, based on its total weight, contains nonionic surfactant of the general formula R ¹ O [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 0.1 to 15 wt .-%, preferably 0.2 to 10 wt .-%, more preferably 0.5 to 8 wt .-%, and in particular from 1.0 to 6 wt .-%.

Preference is given in particular to those end-capped poly (oxyalkylated) nonionic surfactants according to the formula R ¹ O [CH ₂ CH ₂ O] CH ₂ CH (OH) R ² in which R ^{1 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 includes, for example, hydroxy _mixed ethers of the general formula C _6-22 -CH (OH) CH ₂ O- (EO) _20-200 -C _2-26 , for example the C _8-12 fatty alcohol (EO) ₂₂ - 2-hydroxydecyl ether and the C _4-22 fatty alcohol (EO) _40-80 -2-hydroxyalkyl ethers.

Dishwashing agents _{according to the} invention, in particular automatic dishwasher detergents, characterized in that a surfactant of the general formula R ¹ CH (OH) CH ₂ O- (CH ₂ CH ₂ O) _20-120 -R ^{2 is} used as low-foaming nonionic surfactant, where R ¹ 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.

Also preferred are surfactants of the formula R ¹ O [CH ₂ CH (CH ₃ ) O] _x [CH ₂ CH ₂ O] _y CH ₂ CH (OH) R ² , in which R ^{1 is} a linear or branched aliphatic hydrocarbon radical with 4 R ² denotes a linear or branched hydrocarbon radical having 2 to 26 carbon atoms or mixtures thereof and x for values between 0.5 and 4, preferably 0.5 to 1.5, and y for a value of at least 15 stands.

Also preferred according to the invention are also surfactants of the general formula R ¹ O [CH ₂ CH (CH ₃ ) O] _x [CH ₂ CH ₂ O] _y CH ₂ CH (OH) R ² in which R ^{1 is} a linear or branched aliphatic radical Hydrocarbon radical having 4 to 22 carbon atoms or mixtures thereof, R ² denotes a linear or branched hydrocarbon radical having 2 to 26 carbon atoms or mixtures thereof and x is a value between 1 and 40 and y is a value between 15 and 40, wherein the alkylene units [CH ₂ CH (CH ₃ ) O] and [CH ₂ CH ₂ O] randomized, ie in the form of a random random distribution.

The group of preferred end-capped poly (oxyalkylated) nonionic surfactants also includes nonionic surfactants of the formula R ¹ O [CH ₂ CH ₂ O] _x [CH ₂ CH (R ³ ) O] _y CH ₂ CH (OH) R ² , in which R ¹ and R ^{2 is} independently a 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 are independently from each other values between 1 and 32, wherein nonionic surfactants with R ³ = -CH ₃ and values of x from 15 to 32 and y of 0.5 and 1.5 are most preferred.

Other preferred nonionic surfactants are the end-capped poly (oxyalkylated) nonionic surfactants of the formula R ¹ O [CH ₂ CH (R ³ ) O] _x [CH ₂ ] _k CH (OH) [CH ₂ ] ₁ OR ² , in which R ¹ and R ^{2 are} linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radicals having 1 to 30 carbon atoms, R ^{3 is} H or a methyl, ethyl, n-propyl, iso-propyl, n- Butyl, 2-butyl or 2-methyl-2-butyl radical, x are values between 1 and 30, k and j are values between 1 and 12, preferably between 1 and 5. When the value x ≥ 2, each R ³ in the above formula R ¹ O [CH ₂ CH (R ³ ) O] _x [CH ₂ ] _k CH (OH) [CH ₂ ] ₁ OR ^{2 may be} different. R ¹ and R ² are preferably linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radicals having 6 to 22 carbon atoms, with radicals having 8 to 18 carbon atoms being particularly preferred. For the radical R ³ , H, -CH ₃ or -CH ₂ CH _{3 are} particularly preferred. Particularly preferred values for x are in the range from 1 to 20, in particular from 6 to 15.

As described above, each R ³ in the above formula may be different if x ≥ 2. As a result, the alkylene oxide unit in the square bracket can be varied. For example, when x is 3, the radical R ³ can be selected to form ethylene oxide (R ³ = H) or propylene oxide (R ³ = CH ₃ ) units which may be joined in any order, for example (EO) ( PO) (EO), (EO) (EO) (PO), (EO) (EO) (EO), (PO) (EO) (PO), (PO) (PO) (EO) and (PO) ( PO) (PO). The value 3 for x has been selected here by way of example and may well be greater, with the variation width increasing with increasing x values and including, for example, a large number (EO) groups combined with a small number (PO) groups, or vice versa ,

Particularly preferred end-capped poly (oxyalkylated) alcohols of the above formula have values of k = 1 and j = 1, so that the above formula zu R ¹ O [CH ₂ CH (R ³ ) O] _x CH ₂ CH (OH) CH ₂ OR ² simplified. In the latter formula, R ¹ , R ² and R ^{3 are} as defined above and x is from 1 to 30, preferably from 1 to 20 and in particular from 6 to 18. Particularly preferred are surfactants in which the radicals R ¹ and R ^{2 has} 9 to 14 C atoms, R ^{3 is} H and x assumes values of 6 to 15.

Further preferably used nonionic surfactants are nonionic surfactants of the general formula R ¹ O (AlkO) _x M (OAlk) _y OR ² , where R ¹ 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 selected from the group CH ₂ , CHR ³ , CR ³ R ⁴ , CH ₂ CHR ³ and CHR ³ CHR ⁴ , where R ³ and R ⁴ independently of one another represent a branched or unbranched, saturated or unsaturated alkyl radical having 1 to 18 carbon atoms.

• – R, R¹ und R² unabhängig voneinander für einen Alkylrest oder Alkenylrest mit 6 bis 22 Kohlenstoffatomen;
• – x und y unabhängig voneinander für Werte zwischen 1 und 40 stehen

Nonionic surfactants of the general formula R ¹ -CH (OH) CH ₂ -O (CH ₂ CH ₂ O) _x CH ₂ CHR (OCH ₂ CH ₂ ) _y O-CH ₂ CH (OH) -R ² , where

• R, R ¹ and R ² independently represent an alkyl radical or alkenyl radical having 6 to 22 carbon atoms;
• - x and y independently represent values between 1 and 40

Particular preference is given here to compounds of the general formula R ¹ -CH (OH) CH ₂ -O (CH ₂ CH ₂ O) _x CH ₂ CHR (OCH ₂ CH ₂ ) _y O-CH ₂ CH (OH) -R ² , in where R is a linear, saturated alkyl radical having 8 to 16 carbon atoms, preferably 10 to 14 carbon atoms, and n and m independently of one another have values of 20 to 30. Corresponding compounds can be obtained, for example, by reaction of alkyldiols HO-CHR-CH ₂ -OH with ethylene oxide, followed by reaction with an alkyle epoxide to close the free OH functions to form a dihydroxy ether.

• – R¹ und R² unabhängig voneinander für einen Alkylrest oder Alkenylrest mit 4 bis 22 Kohlenstoffatomen;
• – R³ und R⁴ unabhängig voneinander für H oder für einen Alkylrest oder Alkenylrest mit 1 bis 18 Kohlenstoffatomen und
• – x und y unabhängig voneinander für Werte zwischen 1 und 40 stehen.

In a further preferred embodiment, the nonionic surfactant is selected from nonionic surfactants of the general formula R ^{1 is} -O (CH ₂ CH ₂ O) _x CR ³ R ⁴ (OCH ₂ CH ₂ ) _y OR ² , in the

• - R ¹ and R ² independently represent an alkyl radical or alkenyl radical having 4 to 22 carbon atoms;
• R ³ and R ⁴ independently of one another are H or an alkyl radical or alkenyl radical having 1 to 18 carbon atoms and
• - x and y independently represent values between 1 and 40.

Preference is given here in particular to compounds of the general formula R ¹ -O (CH ₂ CH ₂ O) _x CR ³ R ⁴ (OCH ₂ CH _{2) y} OR ^2, are in which R ³ and R ⁴ is H, and the subscripts x and y are independently of one another assume values from 1 to 40, preferably from 1 to 15.

Particular preference is given in particular to compounds of the general formula R ¹ -O (CH ₂ CH ₂ O) CR ³ R ⁴ (OCH ₂ CH ₂ ) _y OR ² in which the radicals R ¹ and R ² independently of one another are saturated alkyl radicals having 4 to 14 Represent carbon atoms and the indices x and y independently of one another assume values of 1 to 15 and in particular of 1 to 12.

Also preferred are those compounds of the general formula R ¹ -O (CH ₂ CH ₂ O) _x CR ³ R ⁴ (OCH ₂ CH ₂ ) _y OR ² , in which one of the radicals R ¹ and R ^{2 is} branched.

Very particular preference is given to compounds of the general formula R ¹ -O (CH ₂ CH ₂ O) CR ³ R ⁴ (OCH ₂ CH ₂ ) _y OR ² in which the indices x and y independently of one another assume values of 8 to 12.

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 manufacturing process, commercial products of the formulas mentioned mostly do not consist of an individual representative but of mixtures, which means that average values and, consequently, fractional numbers can result for both the C chain lengths and for the degrees of ethoxylation or alkoxylation.

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 ,

Particular preference is given to those 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 ,

The proportion by weight of the nonionic surfactant in the total weight of the dishwashing agent according to the invention, in particular 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 a preferred embodiment, the weight% ratio of anionic surfactant having at least one sulfate or sulfonate group to nonionic surfactant is from 3: 1 to 1: 3, especially from 2: 1 to 1: 2, more preferably from 1 , 5: 1 to 1: 1.5.

Dishwashing agents according to the invention, in particular automatic dishwasher detergents, 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 dishwashing agent according to the invention, in particular automatic dishwashing agent, in a preferred embodiment is from 0.1 to 20 wt .-%, preferably from 0.5 to 18 wt .-%, particularly preferably from 1.0 to 15 wt .-% and in particular from 4 to 14 wt .-%.

Dishwashing agents according to the invention, in particular automatic dishwashing detergents, characterized in that the copolymeric anionic polymer is selected from the group of hydrophobically modified polycarboxylates and polysulfonates is a particularly preferred object since the hydrophobic modification of the anionic copolymers improves the rinsing and drying properties of these agents At the same time low deposit formation can be achieved.

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 ¹ (R ² ) C =C (R ³ ) COOH, in which R ¹ to R ³ independently of one another are -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, alkyl or alkenyl radicals substituted by -NH ₂ , -OH or -COOH as defined above or -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.

For the purposes of this document, the stated molecular weights are weight average molecular weights M w, which were determined in principle by means of gel permeation chromatography (GPC), a UV detector being used. The measurement was carried out against an external standard, which provides realistic molecular weight values due to its structural relationship to the investigated polymers.

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 are -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, NH ₂ , -OH or -COOH substituted alkyl or alkenyl radicals or -COOH or -COOR ⁴ , wherein R ^{4 is} a saturated or unsaturated, 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 HO ₃ SX- (R ⁶ ) C = C (R ⁷ ) -X-SO 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-hydroxypropanesulfonic 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, d. H. in that 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 dishwashing agents, in particular automatic dishwasher detergents, are characterized in that the copolymers have molar masses of 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 carboxyl group-containing monomer and the monomer containing the sulfonic acid group, 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.

• i) Carbonsäuregruppen-haltige Monomer(e)
• ii) Sulfonsäuregruppen-haltige Monomer(e)
• iii) nichtionische Monomer(e)

enthält, werden erfindungsgemäß bevorzugt.Dishwashing detergent, in particular automatic dishwashing detergent, characterized in that the dishwashing detergent comprises as anionic copolymer a copolymer

• i) carboxylic acid group-containing monomer (s)
• ii) sulfonic acid group-containing monomer (s)
• iii) nonionic monomer (s)

contains are preferred according to the invention.

The nonionic monomers used are preferably monomers of the general formula R ¹ (R ² ) C =C (R ³ ) -XR ⁴ , in which R ¹ to R ³ independently of one another are -H, -CH ₃ or -C ₂ H ₅ , X represents an optionally present spacer group selected from -CH ₂ -, -C (O) O- and -C (O) -NH-, and R ^{4 represents} a straight-chain or branched saturated alkyl radical having 2 to 22 carbon atoms or represents 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, ethylcyclohexyn, 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, α 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, methyl methacrylate, N - (methyl) acrylamide, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, N- (2-ethylhexyl) acrylamide, octyl acrylate octyl acrylate, N- (octyl) acrylamide, lauryl acrylate, lauryl methacrylate, N- (lauryl) acrylamide, stearyl acrylate, methacrylic acid stearyl ester, N- (stearyl) acrylamide, behenyl acrylate, methacrylic acid behenyl ester and N- (behenyl) acrylamide or mixtures thereof.

In a further embodiment of the invention, a dishwashing composition according to the invention is characterized in that it comprises at least one further enzyme, in particular a protease, amylase, cellulase, hemicellulase, mannanase, tannase, xylanase, xanthanase, β-glucosidase, carrageenase, perhydrolase, oxidase, oxidoreductase or a lipase, and combinations thereof, in particular a combination selected from protease and amylase, protease and lipase, protease and cellulase, protease and mannanase, amylase and lipase, amylase and cellulase, amylase and mannanase, lipase and cellulase, lipase and Mannanase, lipase and cellulase, protease and amylase and lipase, protease and amylase and cellulase, protease and amylase and mannanase, amylase and lipase and cellulase, amylase and lipase and mannanase, lipase, cellulase and mannanase, protease and amylase and lipase and cellulase, Protease and amylase and cellulase and mannanase.

Such another enzyme is advantageously contained in the agent in an amount of 1 × 10 ^-8 to 5 weight percent based on active protein. More preferably, each further enzyme is in an amount of 1 × 10 ^-7 -3 wt%, from 0.00001-1 wt%, from 0.00005-0.5 wt%, from 0.0001 to 0.1 wt .-% and particularly preferably from 0.0001 to 0.05 wt .-% in inventive compositions, based on active protein. In this regard, the determination of the active protein concentration can be carried out in a customary manner, in the case of hydrolases, for example, via a titration of the active sites using a suitable irreversible inhibitor and determination of the residual activity (cf., for example Bender, M., et al., J. Am. Chem. Soc. 88, 24 (1966), p. 5890-5913 ; the said reference relates to proteases, the principle of titration of the active sites being transferable to other hydrolases). Particularly preferably, the enzymes show synergistic cleaning performance against certain stains or stains, ie the enzymes contained in the middle composition mutually support each other in their cleaning performance. Such a synergism is very particularly preferred between the pectin-splitting enzyme according to the invention and a further enzyme of an agent according to the invention, in particular between said pectin-splitting enzyme and a protease and / or an amylase and / or a lipase and / or a Mannanase and / or a cellulase. Synergistic effects can occur not only between different enzymes, but also between one or more enzymes and other ingredients of the composition according to the invention.

Among the proteases, those of the subtilisin type are preferable. Examples thereof are the subtilisins BPN 'and Carlsberg, the protease PB92, the subtilisins 147 and 309, the alkaline protease from Bacillus lentus, subtilisin DY and the enzymes thermitase, proteinase K and the subtilases, but not the subtilisins in the narrower sense Proteases TW3 and TW7. Subtilisin Carlsberg in a developed form under the trade names Alcalase ^® from Novozymes A / S, Bagsvaerd, Denmark. The subtilisins 147 and 309 are sold under the trade names Esperase ^®, or Savinase ^® from Novozymes. From the protease from Bacillus lentus DSM 5483 derived under the name BLAP ^® protease variants derived. Further preferred proteases are, for example, the enzymes known as PUR. Other proteases are also available under the trade name Durazym ^®, Relase ^®, Everlase ^®, Nafizym ^®, Natalase ^®, Kannase ^® and Ovozyme ^® from Novozymes, which ^® under the trade names Purafect ^®, Purafect ^® OxP, Purafect Prime, Excellase ^® and Properase.RTM ^® from Genencor, that under the trade name Protosol® ^® from Advanced Biochemicals Ltd., Thane, India, under the trade name Wuxi ^® from Wuxi Snyder Bioproducts Ltd., China, under the trade names Proleather® ^® and Protease ^P® from Amano Pharmaceuticals Ltd., Nagoya, Japan, and the enzyme available under the name Proteinase K-16 from Kao Corp., Tokyo, Japan. Particular preference is also given to using the proteases from Bacillus gibsonii and Bacillus pumilus, which are disclosed in the international patent applications WO2008 / 086916 and WO2007 / 131656 ,

Amylases which can be synthesized according to the invention are, for example, the α-amylases from Bacillus licheniformis, from Bacillus amyloliquefaciens or from Bacillus stearothermophilus, and in particular also their further developments improved for use in detergents or cleaners. The enzyme from Bacillus licheniformis is available from the company Novozymes under the name Termamyl ^® and by the company Danisco / Genencor under the name Purastar® ^® ST. Development products of this α-amylase are available from the company Novozymes under the trade names Duramyl ^® and Termamyl ^® ultra, by the company Danisco / Genencor under the name Purastar® ^® OxAm and from the company Daiwa Seiko Inc., Tokyo, Japan, as Keistase ^® available. The α-amylase from Bacillus amyloliquefaciens is marketed by the company Novozymes under the name BAN ^®, and variants derived from the α-amylase from Bacillus stearothermophilus under the names BSG ^® and Novamyl ^®, also from the company Novozymes. Furthermore, for this purpose, the α-amylase from Bacillus sp. A 7-7 (DSM 12368) and cyclodextrin glucanotransferase (CGTase) from Bacillus agaradherens (DSM 9948). Likewise, fusion products of all the molecules mentioned can be used. In addition, the enhancements available under the trade names Fungamyl.RTM ^® by the company Novozymes of α-amylase from Aspergillus niger and A. oryzae, which are. Other advantageous commercial products are for example the Amylase-LT ^® and Stainzyme® ^® or ultra Stainzyme® ^® or Stainzyme® plus ^®, the latter also from the company Novozymes. Also variants of these enzymes obtainable by point mutations can be used according to the invention. Particularly preferred amylases are disclosed in International Publications WO 00/60060 . WO 03/002711 . WO 03/054177 and WO07 / 079938 , whose disclosure is therefore expressly referred to, or whose disclosure in this regard is therefore expressly incorporated into the present patent application. Further, amylases which can be synthesized according to the invention are preferably .alpha.-amylases.

Examples of lipases or cutinases which can be synthesized according to the invention, which are contained in particular because of their triglyceride-splitting activities, but also in order to generate in situ peracids from suitable precursors, are the lipases which are originally obtainable from Humicola lanuginosa (Thermomyces lanuginosus) or further developed, in particular those with the amino acid exchange D96L. They are sold, for example, by Novozymes under the trade names Lipolase ^®, Lipolase Ultra ^®, LipoPrime® ^®, Lipozyme® ^® and Lipex ^®. Furthermore, for example, the cutinases can be used, which were originally isolated from Fusarium solani pisi and Humicola insolens. By Genencor, for example, the lipases or cutinases can be used, the initial enzymes were originally isolated from Pseudomonas mendocina and Fusarium solanii. Other important commercial products are the originally marketed by Gist-Brocades preparations M1 Lipase ^® and ^® and Lipomax® to mention those marketed by Meito Sangyo KK, Japan under the names Lipase MY-30 ^®, Lipase OF ^® and lipase PL ^® enzymes, and also the product Lumafast® ^® from Genencor.

According to the invention attachable cellulases (endoglucanases, EC) include, for example, fungal endoglucanase (EG) -rich cellulase preparation and developments thereof, which is offered by the company Novozymes under the trade name Celluzyme ^®. The products Endolase ^® and Carezyme ^® , also available from Novozymes, are based on the 50 kD EG or the 43 kD EG from Humicola insolens DSM 1800. Further commercial products of this company are Cellusoft ^® , Renozyme ^® and Celluclean ^® . Also usable are, for example cellulases, which are available from the company AB Enzymes, Finland, under the trade names Ecostone ^® and Biotouch ^®, and the at least partly based on the 20 kD EG Melanocarpus. Other cellulases from the company AB Enzymes are Econase® ^® and ECOPULP ^®. Other suitable cellulases are from Bacillus sp. CBS 670.93 and CBS 669.93, those derived from Bacillus sp. CBS 670.93 by the company Danisco / Genencor under the trade name Puradax® ^® available. Further usable commercial products of the company Danisco / Genencor are "Genencor detergent cellulase L" and IndiAge ^® Neutra. Also variants of these enzymes obtainable by point mutations can be used according to the invention. Particularly preferred cellulases are Thielavia terrestris cellulase variants described in International Publication WO 98/12307 Cellulases from Melanocarpus, in particular Melanocarpus albomyces, disclosed in the international publication WO 97/14804 Cellulases of the EGIII type from Trichoderma reesei disclosed in the European patent application EP 1 305 432 and variations obtainable therefrom, in particular those disclosed in the European patent applications EP 1240525 and EP 1305432 , as well as cellulases, which are disclosed in international publications WO 1992006165 . WO 96/29397 and WO 02/099091 , The respective disclosure is therefore expressly referred to, or the disclosure content of which in this respect is therefore expressly included in the present patent application.

Furthermore, in particular for the removal of certain problem soiling, further enzymes can be used, which are summarized by the term hemicellulases. These include, for example, mannanases, xanthan lyases, xanthanases, xyloglucanases, xylanases, pullulanases and β-glucanases. The recovered from Bacillus subtilis β-glucanase is available under the name Cereflo ^® from Novozymes. According to the invention particularly preferred hemicellulases are mannanases, which are marketed under the trade names man Away ^® by the company Novozymes or Purabrite ^® by the company Genencor.

To increase the bleaching effect, a dishwasher detergent according to the invention may also contain oxidoreductases, for example oxidases, oxygenases, catalases (which react as peroxidase at low H ₂ O ₂ concentrations), peroxidases, such as halo-, chloro-, bromo-, lignin-, glucose- or manganese peroxidases, dioxygenases or laccases (phenol oxidases, polyphenol oxidases). Suitable commercial products Denilite® ^® 1 and 2 from Novozymes should be mentioned. As an example of advantageous systems for enzymatic perhydrolysis can be applied to the applications WO 98/45398 A1 . WO 2005/056782 A2 such as WO 2004/058961 A1 directed. A combined enzymatic bleaching system comprising an oxidase and a perhydrolase describes the application WO 2005/124012 , 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.

The enzymes to be used according to the invention may also be formulated together with accompanying substances, for example from the fermentation, or with stabilizers, and be incorporated into a dishwashing composition according to the invention in such a form of preparation.

The above-described phosphate-free active ingredient combinations are particularly suitable for reducing the formation of deposits in dishwashing processes, in particular in automatic dishwashing processes.

• (a) In Kontakt bringen der harten Oberfläche mit einer Reinigungsflotte, die ein erfindungsgemäßes phosphatfreies Geschirrspülmittel enthält;
• (b) Wiederholen von Schritt (a), wobei mindestens 2 Wiederholungen durchgeführt werden.

Another object of the invention is therefore a method for removing deposits on hard surfaces, in particular crockery, comprising the method steps

• (a) contacting the hard surface with a cleaning liquor containing a phosphate-free dishwashing detergent according to the invention;
• (b) repeating step (a), wherein at least 2 repetitions are performed.

The advantage of the reduced deposit formation is particularly evident when agents according to the invention are repeatedly used over a longer period of time. Consequently, the inventive method is directed to the repeated execution of a rinse cycle according to process step (a), in which a dishwashing agent according to the invention is used and is brought into contact with the cleaning product in the form of the cleaning liquor. Each rinse according to process step (a) preferably represents a complete, independent rinse, ie not only the main rinse cycle within a rinse cycle. Consequently, process step (b) is directed to the repeated performance of the rinse cycle. In this regard, the rinses can be performed, for example, immediately following each other or with a time interval from each other. In this regard, the repetitions may for example also take place on different days, so that a longer period is considered. According to process step (b) at least 2 repetitions are carried out. It can be advantageously carried out 5, 10, 15, 20, 25, 30, 35, 40, 45 or 50 repetitions.

In this respect, it is also not detrimental if, between rinses with an agent according to the invention, one or more rinses are carried out with a dishwashing detergent not according to the invention. Essential for the realization of a method according to the invention is a repeated application of an agent according to the invention. Consequently, a method according to the invention is also realized if one or more rinses with a dishwashing detergent not according to the invention are carried out between at least two feedthroughs of process step (a).

• – das Pektin-spaltende Enzym in einer Konzentration von 0,0000003 bis 0,0004 Gew.-%, bevorzugt von 0,0000005 bis 0,0003 Gew.-% in der Reinigungsflotte vorliegt, bezogen auf den Gesamtproteingehalt des Pektin-spaltenden Enzyms, und/oder
• – der Verfahrensschritt (a) bei einer Flottentemperatur unterhalb von 90°C, 80°C, 70°C, 60°C, 50°C oder 40°C durchgeführt wird, und/oder
• – die harte Oberfläche in Verfahrensschritt (a) für mindestens 20 Minuten, 25 Minuten oder 30 Minuten und/oder weniger als 90 Minuten, 80 Minuten, 70 Minuten, 60 Minuten, 50 Minuten oder 45 Minuten in Kontakt mit der Reinigungsflotte ist, und/oder
• – der Verfahrensschritt (a) in einer Geschirrspülmaschine stattfindet.

In preferred embodiments, a method according to the invention is characterized in that

• The pectin-splitting enzyme is present in a concentration of from 0.0000003 to 0.0004% by weight, preferably from 0.0000005 to 0.0003% by weight, in the cleaning liquor, based on the total protein content of the pectin-splitting enzyme, and or
• - The process step (a) is carried out at a liquor temperature below 90 ° C, 80 ° C, 70 ° C, 60 ° C, 50 ° C or 40 ° C, and / or
• The hard surface in step (a) is in contact with the cleaning liquor for at least 20 minutes, 25 minutes or 30 minutes and / or less than 90 minutes, 80 minutes, 70 minutes, 60 minutes, 50 minutes or 45 minutes, and / or
• - The process step (a) takes place in a dishwasher.

Preferably, process step (a) is a machine dishwashing process. The dishwashing agent is preferably metered into the interior of a dishwasher during the passage of a dishwashing program, before the start of the main wash cycle or during 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 course of the cleaning process according to process step (a) preferably no additional water softener and no additional rinse aid is metered into the interior of the dishwasher.

Furthermore, all facts, objects and embodiments which are described for dishwasher detergents according to the invention are also applicable to methods according to the invention. Therefore, reference is made at this point expressly to the disclosure in the appropriate place with the statement that this disclosure also applies to the above inventive method.

A further method according to the invention can also consist of only one rinse cycle. Another object of the invention is therefore a process for the removal of deposits on hard surfaces, in particular crockery, comprising the process step: bringing the hard surface into contact with a cleaning liquor containing a phosphate-free dishwashing detergent according to the invention.

Another object of the invention is the use of a dishwashing detergent according to the invention for the removal of stains on hard surfaces.

The dishwashing agent according to the invention is preferably used repeatedly, with preferably at least 2, 5, 10, 15, 20, 25, 30, 35, 40, 45 or 50 repetitions being carried out.

Another object of the invention is the use of a pectin-cleaving enzyme in a phosphate-free dishwashing detergent, which comprises at least one further ingredient for the removal of deposits and / or to reduce the formation of deposits on hard surfaces, in particular dishes.

All facts, subjects and embodiments which are described for dishwashing or inventive methods are also applicable to the uses mentioned. Therefore, reference is made at this point expressly to the disclosure in the appropriate place with the statement that this disclosure also applies to the above inventive uses.

Examples

Example 1: Determination of deposit formation on dishes

In continuous, automated dishwashers, 30 rinsing cycles were carried out in succession. The following phosphate-free gelatinous dishwashing detergent formulation according to the invention was used (data in% by weight): 1.8% Na cumene 0.1% 1,2,3-benzotriazole 23% complexing 2.5% nonionic surfactant 3.3% polycarboxylate 0.5% HEDP 0.5% sorbitol 4.7% citrate 10.7% glycerin 1.8% propanediol 0.0001% perfume oil 2.1% protease 0.5% amylase ad 100% water

The cleaning liquor (25 ml dishwashing detergent in about 4 liters volume) was added to the pectin-splitting enzyme (enzyme preparation Rohapect UF, AB Enzymes company) in a concentration of 0.1 vol .-% (approach 2). The control used was a corresponding cleaning liquor without pectin-cleaving enzyme (batch 1).

The dishwasher contained the following load:
3 Willy cups 0.21
3 whiskey cups
3 black breakfast plates
3 glass plates black
3 blue Mepal melamine plates
3 blue PP (polypropylene) plates
3 blue SAN (styrene-acrylonitrile) dessert plates
3 stainless steel knives (WMF)
3 stainless steel knives (BSF)
2 shiny coffee trays
2 stainless steel butter dishes

Dishwashers of the company Miele (machine type G1355 SC) were used with a 50 ° C light turbo program, program duration 70 min. The water hardness was 21 ° German hardness. The test batches were each added 50 g ballast dirt. Furthermore, each dishwasher contained 300 grams of fresh tomato and apple pieces. The evaluation of the deposit formation took place visually on a scale of 1 to 10, whereby the value 10 is the best grade (no discernible coating). The results are in the following Table 1 shown. Table 1 Willy Becher whiskey tumblers Glass plate black Melaminteller SAN plate Approach 1 3.3 4.3 3 3 3 Approach 2 4.3 4.7 3.7 7 6.3

In the tableware specified in the table, the deposit formation is significantly reduced when using a dishwashing agent according to the invention, especially pronounced in the melamine plates and the plastic SAN plates. Increased deposit formation occurred when using a dishwashing detergent according to the invention compared to the control on any piece of tableware.

Example 2: Determination of the degradation of fruit-based residues

In each case 50 g apple pieces were incubated in each case in 100 ml test batches as indicated for 30 minutes up to 3 hours at room temperature. The residues were then filtered off through a fluted filter and weighed.

Run 1: Control: bidistilled water
Approach 2: Control: phosphate-free detergent formulation according to Example 1 without pectin-splitting enzyme
Batch 3: buffer (20 mM phosphate buffer pH 6) with 6 ppm pectin-splitting enzyme (Rohapect UF, AB Enzymes)
Approach 4: Phosphate-free detergent formulation according to Example 1 with 6 ppm pectin-splitting enzyme (Rohapect UF, AB Enzymes)
Batch 5: Phosphate-free detergent formulation according to Example 1 with 6 ppm of pectin-splitting enzyme 1 (Rohapect UF, AB Enzymes), 6 ppm of pectin-splitting enzyme 2 (Rohapect PTE 100, AB Enzymes) and 6 ppm of cellulase (Renozyme 4500 L, Company Novozymes)

After 30 minutes of incubation (normal length of a main rinse in the dishwasher), almost no reduction of apple pieces was to be measured. However, after 3 h (corresponding to 6 main rinsing cycles) clear differences were found, which are given in Table 2 below (in each case the remaining amount of residue, based on the initial amount, is 100%): TABLE 2 Approach 1 Approach 2 Approach 3 Approach 4 Approach 5 81% 76% 56% 50% 46%

It is clear that fewer residues remain in compositions according to the invention. Consequently, by means of compositions according to the invention, in particular fruit-based residues in the sieve of dishwashers can be reduced. Also advantageous in this regard is the use according to the invention of a pectin-splitting enzyme in combination with a cellulase in a phosphate-free dishwashing detergent.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 2008/132133 A1 [0005]
• EP 662117 B1 [0005]
• EP 692020 B1 [0005]
• WO 2008/086916 [0131]
• WO 2007/131656 [0131]
• WO 00/60060 [0132]
• WO 03/002711 [0132]
• WO 03/054177 [0132]
• WO 07/079938 [0132]
• WO 98/12307 [0134]
• WO 97/14804 [0134]
• EP 1305432 [0134, 0134]
• EP 1240525 [0134]
• WO 1992006165 [0134]
• WO 96/29397 [0134]
• WO 02/099091 [0134]
• WO 98/45398 A1 [0136]
• WO 2005/056782 A2 [0136]
• WO 2004/058961 A1 [0136]
• WO 2005/124012 [0136]

Cited non-patent literature

• Gornall AG, CS Bardawill and MM David, J. Biol. Chem., 177 (1948), pp. 751-766 [0017]
• PJ Mill et al., Biochem. J. 79 (1961), p. 57-64 [0017]
• Bender, M., et al., J. Am. Chem. Soc. 88, 24 (1966), pp. 5890-5913 [0130]

Claims (10)

Phosphate-free dishwashing detergent, characterized in that it comprises a pectin-splitting enzyme and at least one further ingredient. Dishwashing composition according to claim 1, characterized in that it contains the pectin-splitting enzyme in an amount of 1 × 10 ^-8 -5 wt .-%, based on the total protein content of the pectin-cleaving enzyme. Dishwashing detergent according to one of claims 1 or 2, characterized in that it is a machine dishwashing detergent. Dishwashing agent according to one of claims 1 to 3, characterized in that it is in solid form, in particular as a free-flowing powder or as a shaped body, or that it is in liquid, gel or pasty form. Dishwashing detergent according to one of claims 1 to 4, characterized in that the further ingredient is selected from the group consisting of builder, bleach, bleach activator, bleach catalyst, surfactant, anionic polymer and combinations thereof. Dishwashing composition according to one of claims 1 to 5, characterized in that it comprises at least one further enzyme, in particular a protease, amylase, cellulase, hemicellulase, mannanase, tannase, xylanase, xanthanase, β-glucosidase, carrageenase, perhydrolase, oxidase, oxidoreductase or a lipase, and combinations thereof, in particular a combination selected from protease and amylase, protease and lipase, protease and cellulase, protease and mannanase, amylase and lipase, amylase and cellulase, amylase and mannanase, lipase and cellulase, lipase and mannanase , Lipase and cellulase, protease and amylase and lipase, protease and amylase and cellulase, protease and amylase and mannanase, amylase and lipase and cellulase, amylase and lipase and mannanase, lipase, cellulase and mannanase, protease and amylase and lipase and cellulase, protease and amylase and cellulase and mannanase. Method for removing deposits on hard surfaces, in particular dishes, comprising the method steps (a) contacting the hard surface with a cleaning liquor containing a phosphate-free dishwashing detergent according to any one of claims 1 to 6; (b) repeating step (a), wherein at least 2 repetitions are performed. A method according to claim 7, characterized in that the pectin-splitting enzyme is present in a concentration of 0.0000003 to 0.0004% by weight, based on the total protein content of the pectin-splitting enzyme in the cleaning liquor, and / or the process step (a) is carried out at a liquor temperature below 90 ° C, and / or the hard surface in step (a) is in contact with the cleaning liquor for at least 20 minutes and / or less than 90 minutes, and / or the process step (a) takes place in a dishwasher. Use of a dishwashing agent according to any one of claims 1 to 6 for the removal of stains on hard surfaces. Use of a pectin-splitting enzyme in a phosphate-free dishwashing detergent, which comprises at least one further ingredient, for removing deposits and / or for reducing the formation of deposits on hard surfaces, in particular dishes.