WO2012143315A1

WO2012143315A1 - Phosphate-free dishwashing detergent

Info

Publication number: WO2012143315A1
Application number: PCT/EP2012/056873
Authority: WO
Inventors: Nina Mussmann; Thomas Eiting; Thorsten Bastigkeit; Konstantin Benda; Arnd Kessler; Ingo Hardacker
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2011-04-19
Filing date: 2012-04-16
Publication date: 2012-10-26
Also published as: DE102011007695A1

Abstract

In a phosphate-free dishwashing detergent, the film inhibition is to be improved. This is achieved by a phosphate-free dishwashing detergent which comprises a pectin-cleaving enzyme and at least one further ingredient.

Description

Phosphate-free dishwashing detergent

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 goals of the machine cleanser manufacturers is to improve the cleansing and rinsing performance of these agents, with a recent focus on cleaning and rinsing 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 advantageous encapsulation 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 domestic effluent and especially in stagnant waters (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. USA, Canada, Italy, Sweden, Norway, significantly reduced by law and regulations. 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 manufacturers of mechanical cleaning agents, phosphate-reduced or ideally phosphate-free

To develop compositions. For example, International Patent Application WO 2008/132133 A1 discloses a phosphate-free automatic dishwashing detergent. Phosphate-free automatic dishwashing compositions which, in addition to a citrate, furthermore contain carbonates, bleaches and enzymes, are described, for example, in European patents EP 662 1 17 B1 and EP 692 020 B1.

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 leads

Dishwashing 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 also show an improved

Cleaning performance of at least one, preferably several stains, especially at low temperatures and / or short rinses. A low one

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 according to the invention

Dishwashing agents, in particular automatic dishwashing agents, cause a reduction in the residues, in particular 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 particularly preferably at least 65% by weight. These galacturonic acid monomers are linked to each other via a-1, 4, sometimes even to a small extent via .beta.-1, 4-glycosidic bonds and form the backbone of the pectin molecule, which is periodically formed by 1, 2 bonds with .alpha.-L -Rhamnose is interrupted. A pectin is thus a rhamno-galacturonic acid. A pectin-splitting enzyme is consequently in particular an enzyme which catalyzes the hydrolysis of 1,4-α-galactosiduronic bonds.

Within the EC classification of enzymes, the numerical classification system for enzymes, the pectin-cleaving enzymes belong in particular to the enzyme classes (English: Enzyme Commission number) EC 3.1 .1 .1 1, EC 3.2.1 .15, EC 3.2.1 .67 and EC 3.2.1 .82 and thus belong to the third of the six main enzyme classes, the hydrolases (EC3. -.-.-), among them the

Glycosylases (E.C. 3.2.-.-) and again below to the glycosidases (E.C. 3.2.1 .-), i.

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.

For the purposes of the present invention, pectin-destroying enzymes are likewise counted as enzymes with the designations pectinase, pectate lyase, pectin esterase,

Pectin methethoxylase, pectin methoxylase, pectin methyl esterase, pectase, pectin methyl esterase, pectin esterase, pectin-pectyl hydrolase, pectin-polymerase, endopolygalacturonase, pectolase, pectin hydrolase, pectin-polygalacturonase, endo-polygalacturonase, poly-a-1, 4-galacturonide glycanohydrolase, endogalacturonase, endo-D-galacturonase, galacturan 1, 4-a-galacturonidase, exopolygalacturonase, poly (galacturonate) hydrolase, exo-D-galacturonase, exo-D-galacturonanase, exopoly-D-galacturonase, exo-poly-a-galacturonosidase,

Exopolygalacturonosidase or Exopolygalacturanosidase.

Examples of enzymes suitable for this purpose are, for example, under the name Gamanase®, Pektinex AR®, X-Pect® or Pectaway® from Novozymes, under the name Rohapect UF®, Rohapect TPL®, Rohapect PTE100®, Rohapect MPE®, Rohapect MA plus HC, Rohapect DA12L®, Rohapect 10L®, Rohapect B1 L® from AB Enzymes, and available under the name Pyrolase® from Diversa Corp., San Diego, CA, USA.

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 arises when the cleaning process begins and the dishwashing detergent, for example, in a

Dishwasher or in another suitable container with water is diluted.

An inventive dishwashing detergent increasingly contains the pectin-splitting enzyme in an amount of 1 × 10 ^-8 -5 wt.%, Of 0.00001-1 wt.%, Of 0.00005-0.5 wt. , 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 BCA method (bicinchoninic acid, 2,2'-biquinolyl-4,4'-dicarboxylic acid) or the biuret method (AG Gornall, CS Bardawill and MM David, J. Biol. Chem., 177 (1948), p. 751 The activity of the pectin-splitting enzyme is determined in a customary manner in this respect, for example, the activity can be determined by measuring the viscosity of a substrate solution, for example pectinic acid (according to PJ Mill et al., Biochem. 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, under conditions of use, the enzyme is then released and can unfold its catalytic action.

In a preferred embodiment of the invention is bein a

Dishwashing agent according to the invention to 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 cleaning and / or care 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

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 dosage 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 on the

Dosing of a dishwasher is guaranteed. 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 ones

Dosiereinheiten, in a preferred embodiment, a water-soluble enclosure.

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.

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

Tuning of the filling paddle speed to 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, wherein the dosage of a prefabricated particulate premix is preferred.

According to the invention, it was surprisingly found that the preparation of the

Allow moldings to 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. Among other things, these particles facilitate the disintegration of the moldings and serve insofar as disintegration aids or

Disintegrants. It has been found to be particularly advantageous according to the invention, Polyvinylpyrrolidon particles having an average particle diameter of 100 to 150 μηι, in particular with a mean particle diameter of 1 10 to 130 μηι to use.

The term "average particle diameter" or "average diameter" is meant ₅₀ particle diameter in the present invention, the volume mean D, which can be determined by conventional methods. The volume average D ₅₀ particle diameter is that point in the particle size at 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 containing, for example, 0.01 to 1% by weight. Particles is carried out.

Particularly preferably, the PVP particles not only have an average particle diameter of 100 to 150 μm, in particular from 1 10 to 130 μm, but moreover the

Particle size of the particles used preferably completely in the specified intervals. This is ensured by the fact that grain size fractions with the specified

Particle sizes obtained by a sieving process can be used. 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.

characterized in that it is in liquid, gel or pasty form.

In this case, all liquid or flowable liquids can be used as liquid washing or cleaning agents

For the purposes of the present application, "flowable" are agents which are pourable and can have viscosities of up to several tens of thousands of mPas The viscosity can be determined by conventional standard methods (for example Brookfield LVT-II viscometer at 20 rpm and 20 C., spindle 3) and is preferably in the range from 5 to 10000 mPas Preferred agents have viscosities of from 10 to 8000 mPas, with values between 120 and 3000 mPas being particularly preferred A liquid washing or cleaning agent within the scope of the present invention The invention may therefore also be gelatinous or paste-like, it may be in the form of a homogeneous solution or suspension, and may for example be sprayed or compounded in other customary 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. Preferred are

Synergies with regard to the cleaning performance and / or the rinsing performance and / or the

Film deposition. 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 the

Carbonates and the organic cobuilders. Citric acid and citrate, preferably sodium citrate, in amounts of from 5 to 60% by weight, preferably 10 to 10, contain citric acid and its salts, in particular their alkali metal salts 50 wt .-% and in particular 15 to 40 wt .-%.

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 action, 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.

The complex-forming phosphonates include in addition to the 1-hydroxyethane-1, 1-diphosphonic acid a number of different compounds such as

Diethylenetriaminepenta (methylenephosphonic acid) (DTPMP). Hydroxyalkane or aminoalkane phosphonates are particularly preferred in this application. Among the hydroxyalkane phosphonates, the 1-hydroxyethane-1,1-diphosphonate (HEDP) is of particular importance as a cobuilder. It is preferably used as the sodium salt, wherein the disodium salt neutral and the

Tetrasodium salt alkaline (pH 9) reacts. 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 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 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. Particular preference is given to automatic dishwasher detergents which contain, as phosphonates, 1-hydroxyethane-1,1-diphosphonic acid (HEDP) or diethylene triamine penta (methylenephosphonic acid) (DTPMP).

Furthermore, the dishwashing agents according to the invention, in particular mechanical

Dishwashing detergent containing two or more different phosphonates.

The proportion by weight of the phosphonates in the total weight of dishwashing compositions according to the invention, in particular automatic dishwasher 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 which serve as bleaches and deliver in water H ₂ O ₂ , sodium percarbonate, sodium perborate tetrahydrate and sodium perborate monohydrate are of particular importance. Further useful bleaching agents are, for example, peroxypyrophosphates, citrate perhydrates and H ₂ O ₂ -producing peracidic salts or peracids, such as perbenzoates,

Peroxophthalates, diperazelaic acid, phthaloiminoperacid or diperdodecanedioic acid.

Furthermore, bleaching agents from the group of organic bleaching agents can also be used. Typical organic bleaching agents are the diacyl peroxides, e.g. Dibenzoyl. 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 may also be called

Bleaching catalysts are 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.

With particular preference, complexes of manganese in the oxidation state II, III, IV or IV are used, which preferably contain one or more macrocyclic ligand (s) with the

Donor functions N, NR, PR, O and / or S included. 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

[Μη '^"Μη ι (μ-0) ₂ (μ- OAc) ₁ (TACN) _2] (BPh ₄₎ 2,

^[Μη ι ^"Μη ιν (μ-0) ₁ (μ-ΟΑο) ^{(β Μ -ΤΑΟΝ)} 2 2] (ΟΙ0 ₄₎ 3,

and [ ^ηηιν 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) included , are preferred according to the invention, since in particular the cleaning result can be significantly improved by the aforementioned bleach catalysts.

The aforementioned bleach-enhancing transition metal complexes, in particular with the

Central atoms Mn and Co are 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% by weight. %, in each case 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. C ₂ -C ₈ -fatty alcohol sulfates (FAS), eg sulfopone K 35 (Cognis,

Germany), secondary C ₁₃ -C ₁₇ alkanesulfonates (SAS), eg Hostapur SAS 93 (Clariant,

Germany), as well as 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 an arbitrary 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 1 to 4 carbon atoms in the alkyl chain.

Also nonionic surfactants of the amine oxide type, for example N-cocoalkyl-N, N-dimethylamine oxide and N-tallow alkyl-N, N-dihydroxyethylaminoxid, and the fatty acid alkanolamides may 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.

Further suitable surfactants are polyhydroxy fatty acid amides of the formula

R ⁱ

I

RC ON- [Z] in the R for an aliphatic acyl radical having 6 to 22 carbon atoms, R for hydrogen, an alkyl or hydroxyalkyl radical having 1 to 4 carbon atoms and [Z] for 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.

The group of polyhydroxy fatty acid amides also includes compounds of the formula

R1-0 R2

I

R-CO-N- [Z] in the R is a linear or branched alkyl or alkenyl radical having 7 to 12 carbon atoms, R 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 oxy-alkyl radical having 1 to 8 carbon atoms, wherein C ₁ alkyl or phenyl radicals are preferred and [Z] is a linear polyhydroxyalkyl radical whose alkyl chain is substituted with at least two hydroxyl groups, or alkoxylated, preferably ethoxylated or propoxylated derivatives of this radical.

[Z] is preferably obtained by reductive amination of a reduced sugar,

For example, glucose, fructose, maltose, lactose, galactose, mannose or xylose. The N-alkoxy- or N-aryloxy-substituted compounds can be prepared by reaction with

Fatty acid methyl esters in the presence of an alkoxide as a catalyst in the desired

Polyhydroxyfatty acid amides are transferred.

Low-foaming nonionic surfactants are used as preferred surfactants. With particular preference, washing or cleaning agents, in particular detergents for the 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 may be present in the mixture as they are usually present in oxo-alcohol radicals. In particular, however, alcohol ethoxylates with linear radicals of alcohols of natural origin having 12 to 18 carbon atoms, for example of coconut, palm, tallow or oleyl alcohol, and on average 2 to 8 moles of EO per mole of alcohol are preferred. Preferred ethoxylated alcohols include, for example, C ₂ -i4 alcohols containing 3 EO or 4 EO, Cg alcohol with 7 EO, C ₃ _ ₁₅ alcohols with 3 EO, 5 EO, 7 EO or 8 EO, C ₁₂ - i ₈ -alcohols with 3 EO, 5 EO or 7 EO and mixtures of these, such as mixtures of C ₂ -i ₄ -alcohol with 3 EO and C ₂ -i ₈ -alcohol with 5 EO. The stated degrees of ethoxylation represent statistical averages, which may correspond to a particular product of an integer or a fractional number. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow rank ethoxylates, NRE). In addition to these nonionic surfactants, fatty alcohols with more than 12 EO can also be used. Examples include tallow fatty alcohol with 14 EO, 25 EO, 30 EO or 40 EO.

With particular preference, therefore ethoxylated nonionic surfactants, which are from C ₆ . ₂₀ - monohydroxyalkanols or C ₆ . _20- alkylphenols or C ₆ . ₂₀ fatty alcohols and more than 12 moles, preferably more than 15 moles and in particular more than 20 moles of ethylene oxide per mole of alcohol were obtained used. A particularly preferred nonionic surfactant is obtained from a straight-chain fatty alcohol having 16 to 20 carbon atoms (C _6, ₂₀ -alcohol), preferably a C ₈ -alcohol and at least 12 mol, preferably at least 15 mol and especially at least 20 mol of ethylene oxide. Of these, the so-called "narrow ranks ethoxylates" are particularly preferred.

With particular preference surfactants are further used, which one or more

Tallow fat alcohols containing 20 to 30 EO in combination with a silicone defoamer.

Particular preference is given to nonionic surfactants which have a melting point above

Have 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, the melting or softening points in said

Temperature range, for example, low-foaming nonionic surfactants which may be solid or highly viscous at room temperature. Are nonionic surfactants used in the Room temperature are highly viscous, 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 from. Particularly preferred nonionic surfactants are ethoxylated monohydroxyalkanols or alkylphenols which additionally have polyoxyethylene-polyoxypropylene block copolymer units. The alcohol or alkylphenol part of such nonionic surfactant molecules preferably constitutes more than 30% by weight, more preferably more than 50% by weight and in particular more than 70% by weight of the total molecular weight of such nonionic surfactants. 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.

Further particularly preferred nonionic surfactants with melting points above

Room temperature contain 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.

In the context of the present invention, particularly preferred nonionic surfactants have been low-foaming nonionic surfactants which contain alternating ethylene oxide and ethylene oxide

Have 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 follows from the other groups. Here are nonionic surfactants of the general formula

Ri-0- (CH ₂ -CH ₂ -0) - (CH ₂ -C H-0) - (CH ₂ -CH ₂ -0) - (CH ^ C HO) - H

R2 R3 is preferred in which R 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 independently

is 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 represent integers from 1 to 6.

The preferred nonionic surfactants of the above formula can be prepared by known methods from the corresponding alcohols R -OH and ethylene or alkylene oxide. The radical R in the above formula may vary depending on the origin of the alcohol. When native sources are used, the group R has an even number of carbon atoms and is usually unbranched, the linear groups being selected from alcohols of native origin having 12 to 18 carbon atoms, e.g. 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 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 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, particular preference is given to nonionic surfactants which have a C ₉ . ₅ alkyl 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 is -CH (OH) CH ₂ O- (AO) _w - (AO) _x - (A "O) _y - (A'O) _z -R ² in which

R and R ² independently of one another represent a straight-chain or branched, saturated or mono- or polyunsaturated C ₂ . ₄ o-alkyl or alkenyl radical; A, Α ', A "and A'" independently represent a radical from the group -CH ₂ CH ₂ , -CH ₂ CH ₂ -CH ₂ , -CH ₂ -CH (CH ₃ ), -CH ₂ -CH ₂ - CH ₂ -CH ₂ , -CH ₂ -CH (CH ₃ ) -CH ₂ -, -CH ₂ -CH (CH ₂ -CH ₃ ); and w, x, y and z are values between 0.5 and 90, where x, y and / or z 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 0 [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 is a linear or branched aliphatic Hydrocarbon radical with 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, stands.

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 0 [CH ₂ CH (CH ₃ ) O] _x [CH ₂ CH ₂ O] _y [CH ₂ CH (CH ₃ ) 0] _z CH ₂ CH (OH) R ² in amounts of 0.1 to 15 wt .-%, preferably 0.2 to 10 wt .-%, particularly 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 0 [CH ₂ CH ₂ O] _y CH ₂ CH (OH) R ² in which R is a linear or branched aliphatic hydrocarbon radical having 4 to 22, in particular 6 to 16, carbon atoms or mixtures thereof, R ² denotes a linear or branched hydrocarbon radical having 2 to 26, in particular 4 to 20, carbon atoms or mixtures thereof and y is a value between 15 and 120, preferably 20 to 100, in particular 20 to 80. The group of these nonionic surfactants includes, for example, hydroxy mixed ethers of the general formula C ₆ . ₂₂ -CH (OH) CH ₂ O- (EO) ₂₀ -i ₂₀ -C ₂ . ₂₆ , for example the C _8-12 fatty alcohol (EO) ₂₂ -2-hydroxydecyl ethers and the C ₄ . ₂₂ fatty alcohol (EO) ₄₀ - ₈ O-2-hydroxyalkyl ether.

Dishwashing agents according to the invention, in particular automatic dishwashing detergents, characterized in that a surfactant of the general formula ## STR3 ## as weakly foaming nonionic surfactant R is CH (OH) CH ₂ O- (CH ₂ CH ₂ O) ₂₀ -i ₂₀ -R ² , where R and R ² independently of one another are a linear or branched aliphatic hydrocarbon radical having 2 to 20, in particular 4 to 16, Carbon atoms are particularly preferred.

Also preferred are surfactants of the formula R 0 [CH ₂ CH (CH ₃ ) O] _x [CH ₂ CH ₂ O] _y CH ₂ Cl-1 (OH) R ² , in which R is a linear or branched aliphatic hydrocarbon radical with 4 R ^{2 is} a linear or branched hydrocarbon radical having 2 to 26 carbon atoms or mixtures thereof and x is between 0.5 and 4, preferably 0.5 to 1.5, and y is a value of at least 15 stands.

Also according to the invention are surfactants of the general formula

R 0 [CH ₂ CH (CH ₃ ) O] _x [CH ₂ CH ₂ O] _y CH ₂ CH (OH) R ² in which R is a linear or branched aliphatic hydrocarbon radical having 4 to 22 carbon atoms or mixtures thereof , R ^{2 is} 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 ) 0] and [CH ₂ CH ₂ 0] randomized, ie in Form a random statistical distribution.

The group of preferred end-capped poly (oxyalkylated) nonionic surfactants also includes nonionic surfactants of the formula R 0 [CH ₂ CH ₂ O] _x [CH ₂ CH (R ³ ) O] _y CH ₂ CH (OH) R ² in which R and R ² independently of one another is 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 , Is -CH (CH ₃ ) ₂ , but preferably -CH ₃ , and x and y are independently from each other values between 1 and 32, with nonionic surfactants with R ³ = -CH ₃ and values for x of 15 to 32 and y of 0 , 5 and 1, 5 are very particularly preferred.

Other preferred nonionic surfactants are the end-capped poly (oxyalkylated) nonionic surfactants of the formula

R 0 [CH ₂ CH (R ³ ) O] _x [CH ₂ ] _k CH (OH) [CH ₂ ] _j OR ² , in which R and R ^{2 represent} linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radicals 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 is in between 1 and 30, k and j are values between 1 and 12, preferably between 1 and 5. If the value x> 2, each R ³ in the above formula R 0 [CH ₂ CH (R ³ ) O] _x [CH ₂ ] _k CH (OH) [CH ₂ ] _j OR ^{2 be} different. R 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 range of variation 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 0 [CH ₂ CH (R ³ ) O] _x CH ₂ CH (OH) CH ₂ OR ² simplified. In the latter formula, R, 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 and R ² Have 9 to 14 carbon atoms, R ^{3 is} H and x assumes values of 6 to 15.

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

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

Alk is a branched or unbranched alkyl radical having 2 to 4 carbon atoms;

x and y independently represent values between 1 and 70; and

M is an alkyl radical selected from the group consisting of 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.

Nonionic surfactants of the general formula are preferred here

R is -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 and R ² independently represent an alkyl 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 -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 which 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.

In a further preferred embodiment, the nonionic surfactant is selected from nonionic surfactants of the general formula

R -O (CH ₂ CH ₂ O) _x CR ³ R ⁴ (OCH ₂ CH ₂ ) _y OR ² in which

R and R ² independently represent an alkyl 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 - 0 (CH ₂ CH ₂ 0) _x CR ³ R ⁴ (OCH ₂ CH ₂₎ _y OR ^2, in which R ³ and R ⁴ are H, and the subscripts x and y are independently from each other assume values from 1 to 40, preferably from 1 to 15.

Especially preferred particular compounds of the general formula R - 0 (CH ₂ CH ₂ 0) _x CR ³ R ⁴ (OCH ₂ CH ₂₎ _y OR ^2, in which the radicals R and R ² are independently saturated alkyl groups having 4 to 14 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.

Preference is furthermore given to those compounds of the general formula R - 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 and R ^{2 is} branched.

Very particular preference is given to compounds of the general formula R - O (CH ₂ CH ₂ O) _x 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 Heresten II procedure exist

Commercial products of the above formulas usually not from an individual representative, but from mixtures, which may result in both the C chain lengths and for the degrees of ethoxylation or degrees of alkoxylation averages and resulting broken numbers.

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

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 dishwasher detergents, characterized in that the copolymeric anionic polymer is selected from the group of hydrophobically modified polycarboxylates and polysulfonates is a particularly preferred

Subject because of the hydrophobic modification of the anionic copolymers

Improvement of the rinse and drying properties of these agents can be achieved with low deposit formation.

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

Preferred copolymeric polysulfonates contain sulfonic acid group-containing (s)

Monomer (s) at least one monomer from the group of unsaturated carboxylic acids.

Unsaturated carboxylic acid (s) used are / are unsaturated carboxylic acids of the formula R (R ² ) C =C (R ³ ) COOH, in which R ¹ to R ³ independently of one another 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, with -NH ₂ , -OH or -COOH substituted alkyl or alkenyl radicals as defined above or is -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 made against one external standard, which provides realistic molecular weight values due to its structural relationship with the investigated polymers.

In the case of the monomers containing sulfonic acid groups, preference is given to 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 one 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 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

H0 ₃ SX- (R ⁶ ) C = C (R ⁷ ) -X-S0 ₃ H in which R ⁶ and R ^{7 are} independently selected

from -H, -CH ₃ , -CH ₂ CH ₃ , -CH ₂ CH ₂ CH ₃ and -CH (CH ₃ ) ₂ and X is an optional spacer group which is selected from - (CH ₂ ) _n - with n = 0 to 4, -COO- (CH ₂ ) _k - with k = 1 to 6, -C (O) -NH-C (CH ₃ ) ₂ -, -C (O) -NH-C (CH ₃ ) ₂ -CH ₂ - and -C (O) -NH-CH (CH ₃ ) -CH ₂ -.

Particularly preferred monomers containing sulfonic acid groups are 1-acrylamido-1-propanesulfonic acid, 2-acrylamido-2-propanesulfonic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid, 2-methacrylamido-2-methyl-1-propanesulfonic acid, 3 Methacrylamido-2-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-sulfo - Propylmethacrylat, 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, that is, the acidic acid of the sulfonic acid group in some or all of them Sulfonic acid groups can be exchanged for metal ions, preferably alkali metal ions and in particular against sodium ions. The use of partially or fully neutralized

Sulfonsäuregruppenhaltigen copolymers is inventively preferred.

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 share of

Carboxylic acid-containing monomers 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 detergents, 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 another preferred embodiment, the copolymers include besides

Carboxyl-containing monomer and sulfonic acid-containing monomer further 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.

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.

As nonionic monomers are preferably monomers of the general formula

R (R ² ) C = C (R ³ ) -XR ⁴ used, in which R to R ^{3 are} independently -H, -CH ₃ or -C ₂ H ₅ , X is an optional spacer group selected is from -CH ₂ -, -C (0) 0- and -C (0) -NH-, and R ^{4 is} a straight or branched chain saturated alkyl radical having 2 to 22 carbon atoms or an unsaturated, preferably aromatic radical having 6 to 22 carbon atoms. Particularly preferred nonionic monomers are butene, isobutene, pentene, 3-methylbutene, 2-methylbutene, cyclopentene, hexene, hexene-1, 2-methylpentene-1, 3-methylpentene-1, cyclohexene, methylcyclopentene, cycloheptene, methylcyclohexene, 2,4 , 4-trimethylpentene-1, 2,4,4-trimethylpentene-2,3,3-dimethylhexene-1, 2,4-dimethylhexene-1, 2,5-dimethlyhexene-1,3,5-dimethylhexene-1,4 , 4-dimethylhexane-1, ethylcyclohexyn, 1-octene, alpha-olefins having 10 or more carbon atoms such as 1-decene, 1-dodecene, 1-hexadecene, 1-octadecene and C22-α-olefin, 2-styrene, a Methylstyrene, 3-methylstyrene, 4-propylstryol, 4-cyclohexylstyrene, 4-dodecylstyrene, 2-ethyl-4-benzylstyrene, 1-vinylnaphthalene, 2, vinylnaphthalene, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, pentyl acrylate, hexyl acrylate, methyl methacrylate, N - (methyl) acrylamide, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, / V- (2-ethylhexyl) acrylami d,

Octyl acrylate, octyl acrylate, / V- (octyl) acrylamide, acryloyl acrylate, lauryl methacrylate, / V- (lauryl) acrylamide, stearyl acrylate, stearyl methacrylate, / V- (stearyl) acrylamide, behenyl acrylate, behenyl methacrylate and N- (behenyl) acrylamide or their derivatives mixtures.

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 a further enzyme is in the middle advantageously each in an amount of 1 x 10 ^"-8 to 5 weight percent based on active protein. Each additional enzyme is increasingly preferred in an amount of 1 x ^{10" 7} wt -3 %, from 0.00001-1 wt.%, from 0.00005-0.5 wt.%, from 0.0001 to 0.1 wt.%, and more preferably from 0.0001 to 0.05 wt .-% in agents according to the invention, based on active protein. The determination of

In this regard, 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, M.

Bender et al., J. Am. Chem. Soc. 88, 24 (1966), pp. 5890-5913; said reference relates to proteases, the principle of titration of the active sites being transferable to other hydrolases is). 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 is available in further developed form under the trade name Alcalase® from Novozymes A / S, Bagsvasrd, Denmark. The subtilisins 147 and 309 are sold under the trade names Esperase®, and Savinase® by the company 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 include those under the trade names Durazym®, Relase®, Everlase®, Nafizym®, Natalase®, Kannase® and Ovozyme® from Novozymes under the trade names, Purafect®, Purafect® OxP, Purafect® Prime, Excellase ® and Properase® from Genencor, sold under the tradename Protosol® by Advanced Biochemicals Ltd., Thane, India, under the name

Trade names Wuxi® from Wuxi Snyder Bioproducts Ltd., China, which are among 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 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 improved for use in detergents or cleaners

Further developments. The enzyme from Bacillus licheniformis is available from the company Novozymes under the name Termamyl® and from the company Danisco / Genencor under the name Purastar®ST. Further development products of this α-amylase are 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 Bacillus amyloliquefaciens α-amylase is sold by the company Novozymes under the name BAN®, and variants derived from the Bacillus stearothermophilus α-amylase under the names BSG® and Novamyl®, also from the company Novozymes. Furthermore, the a-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 further developments of the a-amylase from Aspergillus niger and A. oryzae available under the trade name Fungamyl® from the company Novozymes are suitable. Further advantageously usable commercial products are, for example, the amylase-LT® and Stainzyme® or Stainzyme ultra® 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 Published Applications WO 00/60060, WO 03/00271 1, WO 03/054177 and WO07 / 079938, the disclosure of which is therefore expressly referred to, or whose disclosure content is therefore expressly incorporated into the present patent application , Furthermore, amylases which can be synthesized according to the invention are preferably α-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 the company 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. As another important

Commercial products include the M1 Lipase® and Lipomax® preparations originally marketed by Gist-Brocades and the enzymes marketed by Meito Sangyo KK, Japan under the name Lipase MY-30®, Lipase OF® and Lipase PL®, also the product Lumafast® from Genencor.

Cellulases (endoglucanases, EG) which can be synthesized according to the invention comprise, for example, the fungal cellulase preparation rich in endoglucanase (EG) or its derivatives

Further developments by the company Novozymes under the trade name

Celluzyme® is offered. Also available from the company Novozymes Products Endolase® and Carezyme® are based on Humicola insolens DSM 1800 50 kD EG or 43 kD EG. Other commercial products of this company are Cellusoft®, Renozyme® and Celluclean®. Continue to be used, for example

Cellulases obtained from AB Enzymes, Finland, under the trade names

Ecostone® and Biotouch®, which are based at least in part on the 20 kD EG from Melanocarpus. Other cellulases from 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 is available from the company Danisco / Genencor under the trade name Puradax®. Other usable commercial products of the company Danisco / Genencor are "Genencor detergent cellulase L" and lndiAge®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 disclosed in International Publication WO 98/12307, cellulases from Melanocarpus, in particular Melanocarpus albomyces, which are described in International

For example, WO 97/14804 discloses cellulases of the EGIII type from Trichoderma reesei which are disclosed in European patent application EP 1 305 432 or variants obtainable therefrom, in particular those disclosed in the European patent applications

Patent Applications EP 1240525 and EP 1305432, and cellulases disclosed in International Publication Nos. 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 β-glucanase obtained from Bacillus subtilis is available under the name Cereflo® from Novozymes. Hemicellulases which are particularly preferred according to the invention are mannanases which are sold, for example, under the trade names Mannaway® by the company Novozymes or Purabrite® by the company Genencor.

To increase the bleaching effect, a dishwashing composition according to the invention may also contain oxidoreductases, for example oxidases, oxygenases, catalases (which react at low H ₂ O ₂ concentrations as peroxidase), peroxidases, such as halo-, chloro-, bromo-, lignin-, glucose- or manganese peroxidases, dioxygenases or laccases (phenol oxidases,

Polyphenol oxidases). Suitable commercial products are Denilite® 1 and 2 from Novozymes. As an example of advantageous systems for an enzymatic perhydrolysis is applied to the applications WO 98/45398 A1, WO 2005/056782 A2 and Referenced WO 2004/058961 A1. 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 oxide reductases (enhancers) or to ensure the flow of electrons in the case of greatly differing redox potentials between the oxidizing enzymes and the soils

(Mediators).

The enzymes to be used according to the invention can also be formulated together with accompanying substances, for example from the fermentation, or with stabilizers and in such a way

Forming be incorporated into a dishwashing detergent according to the invention.

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

Dishwashing.

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) recovering from 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, i. not just the main rinse within a rinse cycle. Consequently, it is

Process step (b) directed to the repeated execution 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 reunions can 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 also be advantageously 5, 10, 15, 20, 25, 30, 35, 40, 45 or 50 Nederholungen performed. 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

The 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).

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-destroying 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 detergent is preferably added during the passage of a dishwashing program, before the start of the main wash cycle or during the main wash cycle in the

Interior of a dishwasher metered. 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 at the appropriate point 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 method for removing deposits on hard Surfaces, in particular crockery, comprising the method step: bringing into contact the hard surface with a cleaning liquor which is a phosphate-free according to the invention

Dishwashing contains.

Another object of the invention is the use of an inventive

Dishwashing detergent for removing soiling 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, objects and embodiments which are inventive for

Dishwashing or process of the invention are described, are also applicable to the uses mentioned. Therefore, at this point is explicitly on the

Revelation in the appropriate place with the reference that this disclosure also applies to the above uses according to the invention.

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% sodium cumenesulfonate

0.1% 1, 2,3-benzotriazole

23% complexing agent

2.5% nonionic surfactant

3.3% polycarboxylate

0.5% HEDP

0.5% sorbitol

4.7% citrate

10.7% glycerol 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% by volume (mixture 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 from 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 contained

Dishwasher 300 g 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 shown in Table 1 below.

Table 1

In the tableware specified in the table, the deposit formation is significantly reduced when using a dishwasher according to the invention, especially pronounced in the Melamine plates as well as 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

(indicated is the remaining amount of residue with respect to the initial amount 100%):

Table 2:

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.

Claims

claims

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 x 10 ^-8 wt.%, Based on the total protein content of the pectin-splitting 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, ß-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.

8. The 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) for at least 20 minutes and / or less than

90 minutes in contact with the cleaning liquor, and / or

the process step (a) takes place in a dishwasher.

9. Use of a dishwashing agent according to any one of claims 1 to 6 for the removal of stains on hard surfaces.

10. Use of a pectin-splitting enzyme in a phosphate-free dishwashing detergent, which comprises at least one further ingredient, for the removal of deposits and / or for reducing the formation of deposits on hard surfaces, in particular dishes.