EP3027721A1 - Care product for automatic dishwashers - Google Patents

Abstract

The present invention relates to a neutral to alkaline care product for automatic dishwashers, which is effective against limescale and grease build-up in an automatic dishwasher and contains at least one organic builder from the group of the aminocarboxylic acids and at least one non-ionic surfactant. The invention also relates to the use of said care product for cleaning and/or the care of an automatic dishwasher and to a method for cleaning and/or the care of a dishwasher using said care product.

Description

 Care products for automatic dishwashers

The present invention relates to a care product for automatic dishwashing machines, which is effective against limescale and fat deposits in an automatic dishwasher and can be used together with a machine dishwashing detergent in a normal dishwashing without negatively affecting the cleaning performance of the dishwashing detergent, as well as the use of this care product for Cleaning and / or care of an automatic

Dishwasher and a method for cleaning and / or maintaining a

Dishwasher using this care product.

Limescale and grease deposits in an automatic dishwashing machine resulting from use are today usually removed with special machine care products. These special care products contain acids for lime removal and surfactants for fat removal.

Because of the acid contained such care products but must be used in a separate program, otherwise the cleaning performance of neutral to alkaline

Dishwashing detergent is significantly reduced and the acidic agents can have a detrimental effect on decor and glasses.

The use of such care products therefore increases the energy and water consumption. In addition, it is not particularly user-friendly due to the additional time required.

There is therefore a need for care products for automatic dishwashers, which in a normal cleaning cycle of a dishwasher together with a conventional

Dishwashing detergents can be used without negatively influencing their cleaning performance and thereby effecting sufficient cleaning and care of the dishwasher.

It has now been found that a care product which is effective against lime and fat, but is neutral to alkaline, can be used together with a conventional cleaner during the cleaning of dirty dishes without adversely affecting the cleaning performance of the dishwashing detergent. The corresponding conditioning agent contains surfactants and alkalinity to provide sufficient fat removal power, and additional strong organic builders in relatively large amounts to be effective against limescale. The use of such a care product in the normal cleaning cycle saves time, energy and water.

In a first aspect, the present invention is therefore directed to the use of a composition having a pH in the range 7-14, preferably 8.5-12, which contains at least one organic builder and at least one nonionic surfactant, wherein the at least an organic builder is contained in an amount of at least 20% by weight, in particular at least 25% by weight, preferably at least 30% by weight, more preferably at least 35% by weight, most preferably at least 40% by weight, based on the composition absolute amount of the at least one organic builder in the composition is 8-25 g / job, preferably 10-20 g / job, and the at least one organic builder is one

Aminocarboxylic acid, which is preferably selected from methylglycine acetic acid (MGDA) and its salts, glutamic diacetic acid (GLDA) and its salts, and ethylenediaminediacetic acid (EDDA) and its salts, for cleaning and maintaining an automatic dishwashing machine.

In the described use, the composition may be used together with a

automatic dishwashing detergent in a normal cleaning cycle for cleaning dirty dishes.

"At least one" as used herein includes, but is not limited to, 1, 2, 3, 4, 5, 6 and more.

"Normal cleaning cycle" as used herein refers to a program for cleaning dishes of an automatic dishwashing machine Such a cleaning cycle may include one or more pre-rinse steps, one or more main rinse steps, and one or more drying steps

Cleaning / rinsing soiled dishes.

Likewise provided by the present invention is a method for cleaning and / or caring for an automatic dishwashing machine in which, in a normal cleaning cycle, in addition to an automatic dishwashing agent, a care product for automatic dishwashing

Dishwashing machines is used, wherein the care agent comprises at least one organic builder and at least one nonionic surfactant and the care agent has a pH in the range 7-14, preferably 8.5-12, wherein the at least one organic builder in an amount of at least 20 Wt.%, In particular at least 25 wt.%, Preferably at least 30 wt.%, Particularly preferably at least 35 wt.%, Most preferably at least 40 wt.% Based on the care agent, the absolute amount of at least one organic builder in the Care product is 8-25 g / job, preferably 10-20 g / job, and the at least one organic builder is an aminocarboxylic acid which is preferably selected from methylglycine acetic acid (MGDA) and its salts, glutamic diacetic acid (GLDA) and its salts, and ethylenediamine diacetic acid (EDDA) and their salts.

Finally, the present invention is also directed to a care product for automatic dishwashers, wherein the care agent at least one organic builder and at least one nonionic surfactant and the care agent has a pH in the range 7-14, preferably 8.5-12, wherein the at least one organic builder in an amount of at least 20 wt.%, In particular at least 25 wt.%, Preferably at least 30% by weight, more preferably at least 35% by weight, most preferably at least 40% by weight, based on the care agent, the absolute amount of the at least one organic builder in the care agent is 8-25 g / job, preferably 10-20 g / job is that at least one organic builder is an aminocarboxylic acid, which is preferably selected from methylglycine acetic acid (MGDA) and its salts, glutamic diacetic acid (GLDA) and its salts, and

Ethylenediaminediacetic acid (EDDA) and its salts, which contains at least one nonionic surfactant in an amount of at least 5% by weight, preferably at least 10% by weight, based on the care agent, and the absolute amount of the at least one nonionic surfactant in the care agent 1, 2-10 g / job, preferably 2-5 g / job.

These and other aspects, features, and advantages of the invention will become apparent to those skilled in the art from a study of the following detailed description and claims. Any feature of one aspect of the invention may be employed in any other aspect of the invention. Further, it is to be understood that the examples contained herein are intended to describe and illustrate the invention, but not to limit it, and in particular that the invention is not limited to these examples. All percentages are, unless otherwise stated,% by weight, based on the active ingredient. Numeric ranges specified in the format "from x to y" include the above values.If multiple preferred numeric ranges are specified in this format, it is understood that all ranges resulting from the combination of the various endpoints, also be recorded.

The strong organic builders used in the care compositions and compositions herein are aminocarboxylic acids and / or their salts. Particularly preferred representatives of this class are methylglycinediacetic acid (MGDA) or its salts, and glutamic diacetic acid (GLDA) or its salts or ethylenediaminediacetic acid (EDDA) or its salts, on

most preferred is MGDA. Also suitable are iminodisuccinic acid (IDS) and

Iminodiacetic acid (IDA).

The organic builder is used in an amount of at least 20% by weight, in particular at least 25% by weight, preferably at least 30% by weight, more preferably at least 35% by weight, most preferably at least 40% by weight, based on the composition. Such amounts are required to ensure adequate limescale removal. In particular

Embodiments, the agent contains 30 to 60 wt.% Of the at least one organic

Builders. The absolute amount of the at least one organic builder in the Composition is 8-25 g / job, preferably 10-20 g / job, especially 12-20 g / job. The term "g / job" in this context means that the care product contains in a quantity and form intended for a single application the said amount of organic builder, which has been found to be particularly effective in quantities of 10 g and more per

Application can achieve good results in lime removal.

The agents described herein further contain at least one nonionic surfactant. 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-position methyl branched aliphatic radical having 8 to 22, preferably 12 to 18 carbon atoms and G is the symbol which represents 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 useful nonionic surfactants that can be 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.

Further suitable surfactants are the polyhydroxy fatty acid amides known as PHFA.

However, low-foaming nonionic surfactants are preferably used, in particular alkoxylated, especially ethoxylated, low-foaming nonionic surfactants. With particular preference, the automatic dishwashing detergents contain nonionic surfactants from the group of the alkoxylated alcohols.

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 in particular between 26.6 and 43.3 ° C, is / are particularly preferred.

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.

Particularly preferred nonionic surfactants are those which contain alternating ethylene oxide and

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

R -0- (CH ₂ -CH ₂ -0) - (CH ₂ -C H-0) - (CH ₂ -CH ₂ -0) _r (CH ₂ -C HO) - H

 R2 R3

in which R is a straight-chain or branched, saturated or mono- or polyunsaturated Ce-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 are independently integers from 1 to 6.

Thus, particularly preferred are nonionic surfactants having a C9-alkyl group with 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.

Preferred nonionic surfactants here are those of the general formula R -CH (OH) CH 2 O- (AO) w- (AO) x- (A "O) _y - (A"'O) z R ² , in which

 R is a straight-chain or branched, saturated or mono- or polyunsaturated C 6-24-alkyl or alkenyl radical;

R ^{2 is} H or a linear or branched hydrocarbon radical having 2 to 26 carbon atoms; A, Α ', A "and A'" independently of one another are radicals from the group -CH ₂ CH ₂ , -CH ₂ CH ₂ -CH ₂ , -CH ₂ -CH (CH ₃ ), -CH ₂ -CH ₂ -CH ₂ -CH ₂ , -CH ₂ - CH (CH ₃ ) -CH ₂ -, - CH ₂ -CH (CH ₂ -CH ₃ ),

 w, x, y and z are values between 0.5 and 120, where x, y and / or z can also be 0.

Preference is given in particular to those end-capped, poly (oxyalkylated) nonionic surfactants which, in accordance with the formula R 0 [CH ₂ CH ₂ O] x CH ₂ CH (OH) R ² , in addition to a radical R, which is linear or branched, saturated or unsaturated, aliphatic or aromatic

Hydrocarbon radicals having 2 to 30 carbon atoms, preferably 4 to 22

Carbon atoms, further having a linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radical R ² having 1 to 30 carbon atoms, wherein x for values between 1 and 90, preferably for values between 30 and 80 and in particular for values between 30 and 60 stands.

Particular preference is given to surfactants of the formula R 0 [CH 2 CH (CH 3) O] x [CH ² CH ² O] yCH ² CH (OH) R ² in which R is a linear or branched aliphatic hydrocarbon radical having 4 to 18 carbon atoms or mixtures thereof, R ^{2 is} a linear one or branched

Hydrocarbon radical having 2 to 26 carbon atoms or mixtures thereof and x for values between 0.5 and 1, 5 and y is a value of at least 15 stands.

The group of these nonionic surfactants include, for example, the C2-26 fatty alcohol (PO) i- (EO) is-4o-2-hydroxyalkyl ethers, in particular the coco fatty alcohol (PO) i (EO) 22-2-hydroxydecyl ethers ,

Particular preference is furthermore given to those end-capped poly (oxyalkylated) nonionic surfactants of the formula R 0 [CH ₂ CH ₂ O] x [CH ₂ CH (R ³ ) O] _y CH ₂ CH (OH) R ² in which R and R ² independently of one another are linear or branched , saturated or single or multiple

unsaturated 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 is -CH 3, and x and y independently of each other for between values 1 and 32, with nonionic surfactants with R ³ = -CH ³ and values for x of 15 to 32 and y of 0.5 and 1.5 being very particularly preferred.

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 ] jOR ² where R 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, is n-propyl, iso-propyl, n-butyl, 2-butyl or 2-methyl-2-butyl radical, x is values between 1 and 30, k and j are values between 1 and 12, preferably between 1 and 5 stand. When 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 ] jOR ^{2 may 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 are particularly preferred. For the radical R ³ , H, -Chta 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, 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 last-mentioned 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 and R ² Have 9 to 14 carbon atoms, R ^{3 is} H and x assumes values of 6 to 15.

Finally, the nonionic surfactants of the general formula R -CH (OH) CH ₂ O- (AO) _w -R ^{2 have} proved to be particularly effective, in which

 R for a straight-chain or branched, saturated or on or

polyunsaturated C 6 ₂ 4 alkyl or alkenyl radical;

R ^{2 is} a linear or branched hydrocarbon radical having 2 to 26

Carbon atoms;

A is a radical from the group CH ₂ CH ₂ , CH ₂ CH ₂ CH ₂ , CH ₂ CH (CH ₃ ),

preferably CH ₂ CH ₂ , and

w stands for values between 1 and 120, preferably 10 to 80, in particular 20 to 40 The group of these nonionic surfactants include, for example, the C4-22 fatty alcohol (EO) io-8o-2-hydroxyalkyl ethers, in particular also the C8-12 fatty alcohol (EO) 22-2-hydroxydecyl ethers and the C4-22 fatty alcohol (EO) 4o 8o-2-hydroxyalkyl ethers.

In various embodiments of the invention, instead of the above-defined end-capped hydroxy mixed ethers, the corresponding ones can not

end-capped hydroxy mixed ethers. These may satisfy the above formulas, but R ² is hydrogen and R, R ³ , A, Α ', A ", A'", w, x, y and z are as defined above.

The compositions described herein, which comprise at least one nonionic surfactant, preferably a nonionic surfactant from the group of hydroxy mixed ethers, contain the surfactant in various embodiments in an amount based on the total weight of the composition of at least 5 wt.%, Preferably at least 10 wt. %. In specific embodiments, the amount may be more than 10% by weight, for example 1 1-15% by weight. For example, the amounts used per application may be in the range of 1 to 2-10 g / job, preferably in the range of 2 to 5 g / job.

In general, the pH of the care compositions described herein can be adjusted using standard pH regulators. According to the invention, the pH of the composition is in a range from 7.0 to 14.0, preferably 8.5 to 12. The pH adjusters are preferably alkalis. Suitable bases are selected from the group of alkali and alkaline earth metal hydroxides and carbonates, in particular the alkali metal carbonates, of which sodium carbonate is preferred.

The agents according to the invention may comprise at least one further constituent, preferably selected from the group consisting of other surfactants, in particular anionic surfactants, further builders, enzymes, thickeners, sequestering agents, electrolytes, corrosion inhibitors, in particular silver protectants, glass corrosion inhibitors, foam inhibitors, dyes, fragrances, bitter substances, and antimicrobial agents.

In preferred embodiments, the agent is phosphate and / or phosphonate free. In other preferred embodiments, the agent is bleach-free. "Phosphate-free" and "phosphonate-free" as used herein means that the subject composition is substantially free of phosphates or phosphonates, i. in particular phosphates or phosphonates in amounts of less than 0.1 wt .-%, preferably less than 0.01 wt .-% based on the

Total composition contains. Analogously, "bleach-free" as used herein means that the subject composition is substantially free of bleach, ie, known Bleaching agents or substances suitable as bleaching agents in amounts less than 0.1 wt .-%, preferably less than 0.01 wt .-% based on the total composition.

Preferred anionic surfactants are fatty alcohol sulfates, fatty alcohol ether sulfates, dialkyl ether sulfates, monoglyceride sulfates, alkylbenzenesulfonates, olefinsulfonates, alkanesulfonates, ether sulfonates, n-alkyl ether sulfonates, ester sulfonates and lignosulfonates. Also usable in the context of the present invention are fatty acid cyanamides, sulfosuccinates (sulfosuccinic acid esters), in particular sulfosuccinic acid mono- and di-Cs-ds-alkyl esters, sulfosuccinamates,

Sulfosuccinamides, fatty acid isethionates, acylaminoalkanesulfonates (fatty acid taurides),

Fatty acid sarcosinates, ether carboxylic acids and alkyl (ether) phosphates and α-sulfofatty acid salts, acylglutamates, monoglyceride disulfates and alkyl ethers of glycerol disulfate.

The anionic surfactants are preferably used as sodium salts, but may also be present as other alkali or alkaline earth metal salts, for example potassium or magnesium salts, and in the form of ammonium or mono-, di-, tri- or tetraalkylammonium salts, in the case of the sulfonates also in the form of their corresponding acid, eg Dodecylbenzenesulfonic.

The additional builders that can be used include in particular carbonates, organic cobuilders and silicates.

For example, it is possible to use carbonate (s) and / or bicarbonate (s), preferably alkali metal carbonate (s), more preferably sodium carbonate. Alkali carbonates, in particular sodium carbonate, can, as mentioned above, also be used as pH adjusting agents and in various embodiments of the invention are present in an amount of 1-40% by weight, preferably 1. 5-30% by weight, based on the care product. contain the composition.

Particularly suitable organic co-builders are polycarboxylates / polycarboxylic acids, polymeric carboxylates, aspartic acid, polyacetals and dextrins.

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. For example, these are citric acid, adipic acid, succinic acid, glutaric acid, malic acid, tartaric acid,

Maleic acid, fumaric acid, sugar acids, aminocarboxylic acids, nitrilotriacetic acid (NTA), if such use is not objectionable for ecological reasons, and mixtures thereof. Other suitable builders are polymeric polycarboxylates, for example the alkali metal salts of polyacrylic acid or polymethacrylic acid, for example those having a relative molecular mass of 500 to 70,000 g / mol.

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

The compositions may contain as builder also crystalline layered silicates of general formula NaMSix02x + i ^■ y H2O wherein M is sodium or hydrogen, x is a number from 1, 9 to 22, preferably from 1: 9 to 4, particularly preferred values for x is 2, 3 or 4, and y is a number from 0 to 33, preferably from 0 to 20. It is also possible to use amorphous sodium silicates having a modulus Na 2 O: SiO 2 of from 1: 2 to 1: 3.3, preferably from 1: 2 to 1: 2.8 and in particular from 1: 2 to 1: 2.6, which are preferably delayed in dissolution and secondary wash properties.

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

As perfume oils or perfumes, within the scope of the present invention, individual fragrance compounds, e.g. the synthetic products of the ester, ether, aldehyde, ketone, alcohol and hydrocarbon type are used. Preferably, however, mixtures of different fragrances are used, which together produce an attractive fragrance. Such perfume oils may also contain natural fragrance mixtures such as are available from vegetable sources, e.g. Pine, citrus, jasmine, patchouli, rose or ylang-ylang oil.

The preparation of care agents described herein can be done in different ways. The agents may be in solid or liquid form as well as in a combination of solid and liquid forms. Powder, granules, extrudates, compacts, in particular tablets, are particularly suitable as firm supply forms. The liquid supply forms based on water and / or organic solvents may be thickened, in the form of gels.

The agents described herein are preferably preformed into dosage 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 50 g, preferably between 25 and 40 g and in particular between 30 and 36 g on. In order to achieve an optimum cleaning result, preference is given to those agents which are present in the form of a prefabricated dosing unit and between 8 and 20, preferably between 10 and 20 g of the organic builder and between 1, 2 and 10 g, preferably between 2 and 5 g of nonionic (s) contain surfactant (s). The volume of the aforementioned metering units and their spatial form are selected with particular preference so that the metering of the prefabricated units can not take place via the metering chamber of a dishwasher, but the unit must be placed directly into the interior of the dishwasher.

The agents and compositions described herein, particularly the preformed dosage units most preferably comprise a water-soluble coating.

The water-soluble coating is preferably formed from a water-soluble film material selected from the group consisting of polymers or polymer blends. The wrapper may be formed of one or two or more layers of the water-soluble film material. The water-soluble film material of the first layer and the further layers, if present, may be the same or different. Particularly preferred are films which, for example, can be glued and / or sealed to packages such as hoses or cushions after being filled with an agent.

It is preferred that the water-soluble coating be polyvinyl alcohol or a

Contains polyvinyl alcohol copolymer. Water-soluble coatings containing polyvinyl alcohol or a polyvinyl alcohol copolymer have a good stability with a sufficiently high water solubility, in particular cold water solubility on.

Suitable water-soluble films for producing the water-soluble coating are preferably based on a polyvinyl alcohol or a polyvinyl alcohol copolymer whose

Molecular weight in the range of 10,000 to 1,000,000 gmol ^"1 , preferably from 20,000 to 500,000 gmol, more preferably from 30,000 to 100,000 gmol ^{" 1} and in particular from 40,000 to 80,000 gmol.

The production of polyvinyl alcohol is usually carried out by hydrolysis of polyvinyl acetate, since the direct synthesis route is not possible. The same applies to polyvinyl alcohol copolymers which are prepared from correspondingly polyvinyl acetate copolymers. It is preferred if at least one layer of the water-soluble coating comprises a polyvinyl alcohol whose degree of hydrolysis makes up 70 to 100 mol%, preferably 80 to 90 mol%, particularly preferably 81 to 89 mol% and in particular 82 to 88 mol%. A polyvinyl alcohol-containing film material suitable for producing the water-soluble coating may additionally comprise a polymer selected from the group consisting of

(Meth) acrylic acid-containing (co) polymers, polyacrylamides, oxazoline polymers, polystyrene sulfonates, polyurethanes, polyesters, polyethers, polylactic acid or mixtures of the above polymers may be added. A preferred additional polymer is polylactic acids.

Preferred polyvinyl alcohol copolymers include, in addition to vinyl alcohol, dicarboxylic acids as further monomers. Suitable dicarboxylic acids are itaconic acid, malonic acid, succinic acid and

Mixtures thereof, with itaconic acid being preferred.

Likewise preferred polyvinyl alcohol copolymers include, in addition to vinyl alcohol, an ethylenically unsaturated carboxylic acid, its salt or its esters. Such polyvinyl alcohol copolymers particularly preferably contain, in addition to vinyl alcohol, acrylic acid, methacrylic acid, acrylates, methacrylates or mixtures thereof.

It may be preferred that the film material contains further additives. The film material may include, for example, plasticizers such as dipropylene glycol, ethylene glycol, diethylene glycol,

Propylene glycol, glycerol, sorbitol, mannitol or mixtures thereof. Further

Additives include, for example, release aids, fillers, crosslinking agents, surfactants, antioxidants, UV absorbers, antiblocking agents, detackifiers, or mixtures thereof.

Suitable water-soluble films for use in the water-soluble sheaths of

water-soluble packaging according to the invention are films marketed by MonoSol LLC, for example under the designation M8630, C8400 or M8900. Other suitable films include films named Solublon® PT, Solublon® GA, Solublon® KC or Solublon® KL from Aicello Chemical Europe GmbH or the films VF-HP from Kuraray.

Finally, the invention also relates to a dishwashing process, in particular a machine dishwashing process, in which a care agent according to the invention is used.

The subject of the present application is therefore furthermore a process for the cleaning of dishes in a dishwashing machine, in which the care product according to the invention is metered into the interior of a dishwasher during the passage of a dishwashing program before the main wash cycle or during the main wash cycle. The

Dosing or the entry of the agent according to the invention in the interior of the

Dishwasher can be done manually. Examples

Example 1: care formulations

Table 1: Composition of the care products

Example 2: Kalkabtrag

In an Indesit dishwashing machine, two previously alcohol-cleaned and weighed marble plates were rinsed with 35 g of the formulations 1-3 using the "Eco50" program over a running time of 2 h 55 min at 21 ° dH, then dried at 80 ° C. for 2 h The weight loss corresponds to the limescale removal and determines the quality of the lime release capacity of the tested cleaner The results are shown in Table 2 and show that

 inventive formulations containing larger amounts of MGDA, show a sufficiently good Kalkablösevermögen.

Table 2: Limescale properties on marble slabs

As a control, normal phosphate-free and MGDA-containing dishwashing detergents were tested. Both showed a Kalkabtrag of <1 mg / plate. Furthermore, formulations were tested that corresponded to Formulation 1, but in which MGDA was replaced by phosphate or phosphonate. Such formulations showed a removal of only 3 mg / plate.

Claims

claims 1. Use of a composition having a pH in the range of 7-14, preferably 8.5-12, and containing at least one organic builder and at least one nonionic surfactant, wherein the at least one organic builder is present in an amount of at least 20% by weight. , in particular at least 25% by weight, preferably at least 30% by weight, more preferably at least 35% by weight, most preferably at least 40% by weight, based on the composition, of the absolute amount of the at least one organic builder in the composition 8- 25 g / job, preferably 10-20 g / job, and the at least one organic builder is an aminocarboxylic acid, which is preferably selected from methylglycine acetic acid (MGDA) and its salts, glutamic diacetic acid (GLDA) and its salts, and ethylenediaminediacetic acid (EDDA) and their salts, for cleaning and maintaining an automatic dishwasher. 2. Use according to claim 1, characterized in that the composition  is used together with a machine dishwashing detergent in a normal cleaning cycle for cleaning dirty dishes. 3. Method for cleaning and / or maintaining an automatic dishwashing machine,  characterized in that in a normal cleaning cycle, in addition to a machine dishwashing detergent, an automatic dishwashing detergent is used, wherein the care product comprises at least one organic builder and at least one nonionic surfactant and the care product has a pH in the range 7-14, preferably 8, 5-12, wherein the at least one organic builder in an amount of at least 20 wt.%, In particular at least 25 wt.%, Preferably at least 30 wt.%, Particularly preferably at least 35 wt.%, Most preferably at least 40 wt.% based on the care agent, the absolute amount of the at least one organic builder in the care agent is 8-25 g / job, preferably 10-20 g / job, and the at least one organic builder is an aminocarboxylic acid, which is preferably selected from methylglycine acetic acid (MGDA) and their salts, glutamine diacetic acid (GLDA) and its salts, and  Ethylenediaminediacetic acid (EDDA) and its salts. 4. The embodiment according to any one of claims 1 or 2, characterized in that the care agent / the composition containing at least one nonionic surfactant in an amount of at least 5 wt.%, Preferably at least 10 wt.% Based on the care agent / composition , and the absolute amount of at least a nonionic surfactant in the conditioner / composition is 1, 2-10 g / job, preferably 2-5 g / job. Automatic dishwashing detergent, characterized in that the care agent comprises at least one organic builder and at least one nonionic surfactant and the care agent has a pH in the range 7-14, preferably 8.5-12, wherein the at least one organic builder in a Amount of at least 20 wt.%, In particular at least 25 wt.%, Preferably at least 30 wt.%, Particularly preferably at least 35 wt.%, Most preferably at least 40 wt.% Based on the care agent, the absolute amount of at least one organic builder in the conditioner is 8-25 g / job, preferably 10-20 g / job, the at least one organic builder is an aminocarboxylic acid, which is preferably selected from methylglycine acetic acid (MGDA) and its salts, Glutamic diacetic acid (GLDA) and its salts, and ethylenediaminediacetic acid (EDDA) and its salts, which contains at least one nonionic surfactant in an amount of at least 5% by weight, preferably at least 10% by weight, based on the conditioner, and the absolute amount of at least one nonionic surfactant in the conditioner 1, 2-10 g / job, preferably 2-5 g / job. Embodiment according to one of claims 1-5, characterized in that the care agent / the composition  (a) is phosphate and / or phosphonate free; and or  (b) is free of bleaching agents. Embodiment according to one of claims 1-6, characterized in that the care agent / the composition  (a) is in liquid form; and or  (b) is in preportioned form; and or  (C) is in a water-insoluble, water-soluble or water-dispersible packaging, in particular in a polyvinyl alcohol-containing film. Embodiment according to one of claims 1-7, characterized in that the care agent / the composition at least one further constituent selected from the group consisting of further builders, in particular alkali carriers, preferably alkali metal carbonates, more preferably sodium carbonate, further surfactants, polymers, enzymes, corrosion inhibitors, glass corrosion inhibitors, Disintegration aids, fragrances and perfume carriers. An embodiment according to claim 8, characterized in that the care agent / the composition additionally an alkali metal carbonate, in particular sodium carbonate, in an amount of 1-40 wt.%, Preferably 1, 5-30 wt.% Based on the  Conditioner / contains the composition. 0. The embodiment according to any one of claims 1-9, characterized in that the care agent / the composition is present in pre-portioned form in a water-soluble film, wherein the pre-portioned mold has a total weight of 25-40 g.