EP2924101B1 - Cleaning agent and method for cleaning dishes - Google Patents

Cleaning agent and method for cleaning dishes Download PDF

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Publication number
EP2924101B1
EP2924101B1 EP14161314.1A EP14161314A EP2924101B1 EP 2924101 B1 EP2924101 B1 EP 2924101B1 EP 14161314 A EP14161314 A EP 14161314A EP 2924101 B1 EP2924101 B1 EP 2924101B1
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EP
European Patent Office
Prior art keywords
cleaning
cleaning agent
weight
agent according
acids
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EP14161314.1A
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German (de)
French (fr)
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EP2924101A1 (en
Inventor
Marion Zwingenberger
Petra Reessing
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Chemische Fabrik Dr Weigert GmbH and Co
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Chemische Fabrik Dr Weigert GmbH and Co
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Application filed by Chemische Fabrik Dr Weigert GmbH and Co filed Critical Chemische Fabrik Dr Weigert GmbH and Co
Priority to PL14161314T priority Critical patent/PL2924101T3/en
Priority to ES14161314T priority patent/ES2884253T3/en
Priority to HUE14161314A priority patent/HUE055958T2/en
Priority to EP14161314.1A priority patent/EP2924101B1/en
Publication of EP2924101A1 publication Critical patent/EP2924101A1/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/36—Organic compounds containing phosphorus
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/33—Amino carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/32—Organic compounds containing nitrogen
    • C11D7/3245—Aminoacids

Definitions

  • the invention relates to a cleaning agent for machine cleaning of dishes, the use of such a cleaning agent for cleaning dishes and a method for machine cleaning of dishes.
  • EP 0 578 666 B1 discloses, for example, an enzymatic cleaner.
  • WO 00/56851 A1 discloses a highly alkaline dishwashing detergent which contains NTA or EDTA as a complexing agent.
  • the invention is based on the object of providing a cleaning agent and a method of the type mentioned at the outset which enable dishes to be cleaned gently and effectively.
  • the cleaning agent according to the invention is designed and suitable for machine cleaning of dishes. This machine cleaning usually takes place in a dishwasher. A dishwasher automatically cleans dishes after it is started without any manual intervention.
  • tableware describes everything in the kitchen area used or usable objects that are amenable to such automatic cleaning, including trays, gastronorm containers and the like.
  • crockery also includes other items that are accessible to machine cleaning similar to crockery. Suitable industrial parts are mentioned here by way of example.
  • a dishwasher has at least one wash tank. In such a wash tank, detergent solution can be circulated and washed several times over the dishes in the wash tank.
  • the dishwasher can be designed as a one-tank machine into which the dishes are pushed and remain stationary during the washing process. It is preferably a machine with automatic crockery transport (for example a belt or box transport machine) in which crockery is moved through the dishwasher at intervals or preferably continuously during the cleaning process.
  • Such a machine can also be designed as a single-tank machine or preferably as a multi-tank machine with at least two washing tanks.
  • Chelating agents are chemical compounds that form chelate complexes with metal ions.
  • Aminopolycarboxylic acids and aminopolyphosphonic acids are chelating agents familiar to the person skilled in the art.
  • the term “acids” is used across the board; In the mildly alkaline cleaning agent according to the invention, the acids are generally present in the form of their salts; they can be used from the outset in the form of salts.
  • Polymeric dispersing agents help to disperse detached dirt particles in the solution and thus to keep them in suspension and prevent redeposition on the surface of the cleaned dishes.
  • the cleaning agent according to the invention will initially be present as a sales form in a preferably liquid-formulated concentrate, which is diluted with water to form a ready-to-use diluted cleaning solution or cleaning solution.
  • a ready-to-use diluted cleaning solution or cleaning solution can already be present in the concentrate, alternatively it can be present in the ready-to-use diluted cleaning solution. It is preferably present both in the concentrate and after it has been diluted to form a ready-to-use cleaning solution.
  • the cleaning agent according to the invention is enzyme-free and bleach-free.
  • free of ingredients means that these corresponding ingredients are not specifically added to the cleaning agent and are therefore not contained therein or at most as impurities that are customary on an industrial scale.
  • the cleaning agent is preferably, in particular, free from reactive chlorine compounds with a bleaching effect.
  • the invention has recognized that the combination of features according to the invention makes it possible to provide a cleaning agent that is particularly effective in commercial dishwashing, that is mildly alkaline and therefore not very aggressive, and that can dispense with potentially environmentally harmful ingredients.
  • the chelating agents used are environmentally friendly compared to the chelating agents customary in the prior art, such as EDTA or NTA.
  • high alkalinity can be dispensed with, and it is also not necessary to use enzymes.
  • the combination according to the invention can remove common contaminants such as starch, tea and coffee residues in the course of a customary commercial dishwashing even without high and thus aggressive alkalinity, without enzymes and without bleaching agents in the commercial kitchen area.
  • no cleaning agent is known that can provide a corresponding cleaning performance without using the ingredients mentioned.
  • the invention makes it possible to provide a cleaning agent that meets the criteria for the EU eco-label in accordance with Regulation (EC) No. 66/2010 and the Commission decision of November 14, 2012 based on it to determine the environmental criteria for the award of the EU Ecolabel for machine dishwashing detergents for the industrial and institutional sector (2012/720 / EU) and still provides the required cleaning performance.
  • the cleaning agent according to the invention preferably contains both aminopolycarboxylic acids and aminopolyphosphonic acids as well as polymeric dispersing aids.
  • the cleaning agent is preferably free from several of these ingredients, particularly preferably it does not contain any of the ingredients mentioned.
  • surfactants refers to surface-active substances as defined in Ullmann's Encyclopedia of Industrial Chemistry, 6th Edition, Vol. 35, pp. 293ff in the "Surfactants" section.
  • Phosphates are salts and esters of phosphoric acid including their condensates and polymers.
  • Biocides are active substances and preparations which contain one or more active substances in the form in which they reach the user and which are intended to chemically or biologically destroy, deter, render harmless and prevent damage caused by harmful organisms or to combat them in another way (Art. 2 of Directive 98/8 / EC of the European Parliament and Council of February 16, 1998 on the placing of biocidal products on the market).
  • Dyes are colorants in accordance with DIN 55943, in particular soluble dyes.
  • the aminopolycarboxylic acids and / or aminopolyphosphonic acids can preferably be tridentate or tetradentate.
  • MGDA methylglycine-N, N-diacetic acid
  • GLDA glutamic acid-N, N-diacetic acid
  • NTA as an impurity in the MGDA used and GLDA is preferably not contained in the raw material used or at most in concentrations of less than 1% by weight and the cleaning agent according to the invention contains less than 0.1% by weight.
  • the cleaning agent according to the invention preferably fulfills the criteria for the EU eco-label in accordance with Regulation (EC) No. 66/2010 and the Commission decision of 14 November 2012 based on this to determine the environmental criteria for the award of the EU eco-label for machine dishwashing detergents for industrial use and institutional area (2012/720 / EU).
  • EC Regulation
  • 66/2010 the Commission decision of 14 November 2012 based on this to determine the environmental criteria for the award of the EU eco-label for machine dishwashing detergents for industrial use and institutional area (2012/720 / EU).
  • the total content of phosphates and other phosphorus compounds must not exceed the following limit values measured in grams of phosphorus per liter of water at the highest intended dosage of the cleaning agent according to the invention: Soft water (0-6 ° dH): 0.15 g / l Medium hard water (7-13 ° dH): 0.30 g / l Hard water (> 14 ° dH): 0.50 g / l
  • aminopolyphosphonic acids preferably include ATMP (aminotris (methylenephosphonic acid) or their salts.
  • a preferred polymeric dispersing aid comprises polyacrylic acids and / or polymethacrylic acids or their salts. These molar masses preferably have between 2,000 and 20,000, more preferably 4,000 and 15,000, more preferably 6,000 and 10,000.
  • the cleaning agent preferably also contains a corrosion inhibitor. It can be a substance that binds or complexes iron ions and thus inhibits corrosion.
  • a phosphonocarboxylic acid is preferred, and PBTC (2-phosphonobutane-1,2,4-tricarboxylic acid) is more preferred.
  • salts can optionally be used or are preferred.
  • the cleaning agent preferably contains an alkali source, preferably an alkali hydroxide, more preferably KOH.
  • the pH can be adjusted as desired, particularly preferably in the range 9-11 or about 10.
  • Calculated as KOH means that the weight fraction of the alkali source used is converted into the equivalent amount of KOH on the basis of its hydroxyl groups.
  • Such a concentrate can be diluted with water to form a cleaning solution or cleaning solution. It can be used in this cleaning solution in a concentration of 0.1 to 2% by weight, preferably 0.1 to 1% by weight, more preferably 0.2 to 0.5% by weight, are used.
  • the absolute concentrations of the respective ingredients are therefore preferably in a range that is a factor of 50-1,000, more preferably 100-1,000, more preferably 200-500 lower than the preferred absolute weight proportions of the above-described Concentrate.
  • the absolute weight fractions to be calculated from this in the detergent liquor used are also expressly the subject of the disclosure of the present patent application.
  • the invention also relates to the use of a cleaning agent according to the invention for cleaning dishes, in particular for removing soiling selected from the group consisting of coffee and tea residues and starch and protein residues from dishes.
  • the optional pre-rinsing and final rinsing are carried out in a manner familiar to the person skilled in the art and do not require any further explanation here.
  • the final rinse can be followed by further steps such as drying.
  • the cleaning in step b. take place over a period of 10 s to 10 min, more preferably 2 to 6 min.
  • the cleaning can preferably take place at a temperature of 20 to 80 ° C, preferably 30 to 70 ° C, more preferably 50 to 70 ° C.
  • the preferred time period and preferred temperature range described are, independently of one another, the subject matter and parameters of the present invention.
  • the cleaning is preferably carried out in step b. with an aqueous dilution of a concentrate described above and disclosed by way of example in the following exemplary embodiments.
  • This concentrate is preferably used in a concentration of 0.1 to 2% by weight, more preferably 0.1 to 1% by weight, more preferably 0.2 to 0.5% by weight.
  • a recipe for a cleaning agent according to the invention is as follows: Proportion [% by weight] Active ingredient content [wt. -%] PAS 8000 N, 45% 5.00 2.25 ATMP, 5 Na, 40% 5.00 2.00 MGDA, 3 Na, 40% 9.00 3.60 GLDA, 4 Na, 47% 9.00 4.23 PBTC, 50% 3.00 1.5 KOH, 45% 2.10 0.95 Water, fully demineralized 66.90
  • the recipe ingredients are mixed and stirred for 15 minutes at room temperature until a clear solution has formed.
  • the concentrate obtained has a pH of 10.
  • Example 1 In a total of four comparative tests, the cleaning agent of Example 1 was tested in comparison with the three stated cleaning agents of the prior art in three different dishwashers for commercial purposes. In each case, identical cleaning concentrations of the cleaning agents and identical cleaning conditions (process conditions) were used and identically soiled partial batches were cleaned of soiled dishes (soiled with starch, protein, coffee and tea residues). The cleaning results were assessed by visual inspection; the differences when cleaning with the cleaning agent according to the invention are shown in the table below in the "Result" column. It can be seen that the cleaning agent according to the invention achieves an improved cleaning performance in spite of the absence of alkalinity and enzymes, bleaching agents and the like.
  • Comparative cleaner dishwasher dosage Temperature in the wash tank Contact time Result neodisher BioClean Hobart belt dishwasher 3 g / l 64 ° C 2 min Better removal of coffee and tea residues. Equally good removal of starch and protein. Less dirt deposits in the machine tank neodisher BioClean Miele G 7760 3 g / l 55 ° C 2 min Better removal of coffee and tea residues. Equally good removal of starch and protein.

Description

Die Erfindung betrifft ein Reinigungsmittel zur maschinellen Reinigung von Geschirr, die Verwendung eines solchen Reinigungsmittels zur Reinigung von Geschirr sowie ein Verfahren zum maschinellen Reinigen von Geschirr.The invention relates to a cleaning agent for machine cleaning of dishes, the use of such a cleaning agent for cleaning dishes and a method for machine cleaning of dishes.

Bei der Reinigung von Geschirr werden insbesondere im gewerblichen Bereich und in der Gastronomie sogenannte gewerbliche Geschirrspülmaschinen eingesetzt, in denen das Geschirr in vergleichsweise kurzer Zeit gereinigt wird und damit für eine erneute Benutzung zur Verfügung steht. Häufig sind solche gewerblichen Geschirrspülmaschinen als Maschinen mit automatischem Geschirrtransport, beispielsweise als Bandspülmaschinen oder Kastentransportspülmaschinen ausgebildet. In den Waschtanks einer solchen Geschirrspülmaschine wird Reinigerflotte umgewälzt und auf das Geschirr gespült und dieses damit überduscht.When cleaning dishes, so-called commercial dishwashers are used in particular in the commercial sector and in gastronomy, in which the dishes are cleaned in a comparatively short time and are therefore available for renewed use. Such commercial dishwashers are often designed as machines with automatic crockery transport, for example as belt type dishwashers or box conveyor dishwashers. In the wash tanks of such a dishwasher detergent solution is circulated and washed onto the dishes and showered over them.

Die im gewerblichen Bereich in der Regel kurze Reinigungsdauer bei häufig stärkerer Verschmutzung durch schwierig zu entfernende Verunreinigungen wie beispielsweise Tee- oder Kaffeerückstände, Stärke- oder Eiweißrückstände erfordert in der Regel den Einsatz verhältnismäßig aggressiver Reinigungsmittel, die beispielsweise stark alkalisch sind, oder Bleichmittel und/oder Enzyme enthalten. EP 0 578 666 B1 offenbart beispielsweise einen enzymatischen Reiniger.The cleaning time usually short in the commercial sector and often heavier soiling due to impurities that are difficult to remove, such as tea or coffee residues, starch or protein residues, usually requires the use of relatively aggressive cleaning agents, for example strongly alkaline, or bleaching agents and / or Contain enzymes. EP 0 578 666 B1 discloses, for example, an enzymatic cleaner.

WO 00/56851 A1 offenbart ein hoch alkalisches Geschirrreinigungsmittel, das als Komplexbildner NTA oder EDTA enthält. WO 00/56851 A1 discloses a highly alkaline dishwashing detergent which contains NTA or EDTA as a complexing agent.

US 2009/0298738 A1 und WO 2012/028203 A1 offenbaren Reinigungsmittel mit hohem Alkaligehalt. US 2009/0298738 A1 and WO 2012/028203 A1 disclose high alkali detergents.

Der Erfindung liegt die Aufgabe zugrunde, ein Reinigungsmittel sowie ein Verfahren der eingangs genannten Art zur Verfügung zu stellen, die ein schonendes und wirkungsvolles Reinigen von Geschirr ermöglichen.The invention is based on the object of providing a cleaning agent and a method of the type mentioned at the outset which enable dishes to be cleaned gently and effectively.

Gelöst wird diese Aufgabe durch ein Reinigungsmittel zur maschinellen Reinigung von Geschirr, gekennzeichnet durch folgende Merkmale:

  1. a. es enthält wenigstens einen Chelatbildner ausgewählt aus der Gruppe bestehend aus Aminopolycarbonsäuren,
  2. b. es enthält wenigstens ein polymeres Dispergierhilfsmittel und/oder wenigstens eine Aminopolyphosphonsäure,
  3. c. der pH-Wert beträgt 8 bis 12, vorzugsweise 8 bis 11, weiter vorzugsweise 9 bis 11.
  4. d. das Reinigungsmittel ist enzymfrei,
  5. e. das Reinigungsmittel ist bleichmittelfrei,
  6. f. es enthält eine Alkaliquelle, die ein Alkalihydroxid ist.
This task is solved by a cleaning agent for the machine cleaning of dishes, characterized by the following features:
  1. a. it contains at least one chelating agent selected from the group consisting of aminopolycarboxylic acids,
  2. b. it contains at least one polymeric dispersing aid and / or at least one aminopolyphosphonic acid,
  3. c. the pH is 8 to 12, preferably 8 to 11, more preferably 9 to 11.
  4. d. the detergent is enzyme-free,
  5. e. the detergent is bleach-free,
  6. f. it contains a source of alkali which is an alkali hydroxide.

Zunächst seien einige im Rahmen der Erfindung verwendete Begriffe erläutert.First, some terms used in the context of the invention will be explained.

Das erfindungsgemäße Reinigungsmittel ist für die maschinelle Reinigung von Geschirr ausgebildet und geeignet. Diese maschinelle Reinigung erfolgt üblicherweise in einer Geschirrspülmaschine. Eine Geschirrspülmaschine reinigt Geschirr nach dem Ingangsetzen automatisch ohne manuelles Zutun. Der Begriff Geschirr bezeichnet sämtliche im Küchenbereich verwendete oder verwendbare Gegenstände, die einer solchen automatischen Reinigung zugänglich sind, einschließlich Tabletts, Gastronormbehältern und dergleichen. Im Rahmen der Erfindung umfasst der Begriff Geschirr zusätzlich andere Gegenstände, die einer maschinellen Reinigung ähnlich der von Geschirr zugänglich sind. Beispielhaft genannt seien hier geeignete Industrieteile.The cleaning agent according to the invention is designed and suitable for machine cleaning of dishes. This machine cleaning usually takes place in a dishwasher. A dishwasher automatically cleans dishes after it is started without any manual intervention. The term tableware describes everything in the kitchen area used or usable objects that are amenable to such automatic cleaning, including trays, gastronorm containers and the like. In the context of the invention, the term crockery also includes other items that are accessible to machine cleaning similar to crockery. Suitable industrial parts are mentioned here by way of example.

Eine Geschirrspülmaschine weist wenigstens einen Waschtank auf. In einem solchen Waschtank kann Reinigerflotte umgewälzt und mehrfach über das im Waschtank befindliche Geschirr gespült werden. Die Spülmaschine kann als Eintankmaschine ausgebildet sein, in die das Geschirr eingeschoben wird und während des Spülvorgangs darin stationär verbleibt. Bevorzugt handelt es sich um eine Maschine mit automatischem Geschirrtransport (beispielsweise eine Band oder Kastentransportmaschine) bei der Geschirr in Intervallen oder bevorzugt kontinuierlich während des Reinigungsvorgangs durch die Spülmaschine gefahren wird. Eine solche Maschine kann ebenfalls als Eintankmaschine oder bevorzugt als Mehrtankmaschine mit wenigstens zwei Waschtanks ausgebildet sein.A dishwasher has at least one wash tank. In such a wash tank, detergent solution can be circulated and washed several times over the dishes in the wash tank. The dishwasher can be designed as a one-tank machine into which the dishes are pushed and remain stationary during the washing process. It is preferably a machine with automatic crockery transport (for example a belt or box transport machine) in which crockery is moved through the dishwasher at intervals or preferably continuously during the cleaning process. Such a machine can also be designed as a single-tank machine or preferably as a multi-tank machine with at least two washing tanks.

Chelatbildner sind chemische Verbindungen, die mit Metallionen Chelatkomplexe bilden. Aminopolycarbonsäuren und Aminopolyphosphonsäuren sind dem Fachmann geläufige Chelatbildner. Im Rahmen der vorliegenden Anmeldung wird pauschal von Säuren gesprochen, der Begriff umfasst erfindungsgemäß die Salze der entsprechenden Säuren. In dem erfindungsgemäßen mild alkalischen Reinigungsmittel werden die Säuren in der Regel in Form ihrer Salze vorliegen, sie können von vornherein in der Form von Salzen eingesetzt werden.Chelating agents are chemical compounds that form chelate complexes with metal ions. Aminopolycarboxylic acids and aminopolyphosphonic acids are chelating agents familiar to the person skilled in the art. In the context of the present application, the term “acids” is used across the board; In the mildly alkaline cleaning agent according to the invention, the acids are generally present in the form of their salts; they can be used from the outset in the form of salts.

Polymere Dispergierhilfsmittel tragen dazu bei, abgelöste Schmutzpartikel in der Lösung dispergiert und somit in der Schwebe zu halten und verhindern eine Redeposition auf der Oberfläche des gereinigten Geschirrs.Polymeric dispersing agents help to disperse detached dirt particles in the solution and thus to keep them in suspension and prevent redeposition on the surface of the cleaned dishes.

Das erfindungsgemäße Reinigungsmittel wird in der Regel zunächst in einem bevorzugt flüssig formulierten Konzentrat als Verkaufsform vorliegen, das mit Wasser zu einer anwendungsfertig verdünnten Reinigerlösung bzw. Reinigerflotte verdünnt wird. Der beanspruchte Bereich des pH-Wertes kann bereits in dem Konzentrat vorliegen, alternativ kann er in der anwendungsfertig verdünnten Reinigerflotte vorliegen. Bevorzugt liegt der sowohl in dem Konzentrat als auch nach dessen Verdünnen zu einer anwendungsfertigen Reinigerlösung vor.As a rule, the cleaning agent according to the invention will initially be present as a sales form in a preferably liquid-formulated concentrate, which is diluted with water to form a ready-to-use diluted cleaning solution or cleaning solution. The claimed range of the pH value can already be present in the concentrate, alternatively it can be present in the ready-to-use diluted cleaning solution. It is preferably present both in the concentrate and after it has been diluted to form a ready-to-use cleaning solution.

Das erfindungsgemäße Reinigungsmittel ist enzymfrei und bleichmittelfrei. Frei von Inhaltsstoffen bedeutet im Rahmen der Erfindung, dass diese entsprechenden Inhaltsstoffe dem Reinigungsmittel nicht gezielt zugesetzt werden und somit darin nicht oder allenfalls als im technischen Maßstab übliche Verunreinigungen enthalten sind.The cleaning agent according to the invention is enzyme-free and bleach-free. In the context of the invention, free of ingredients means that these corresponding ingredients are not specifically added to the cleaning agent and are therefore not contained therein or at most as impurities that are customary on an industrial scale.

Bleichmittel sind definiert in Ullmann's Encyclopedia of Industrial Chemistry, 6th Edition, Vol. 5, S. 411ff . Erfindungsgemäß ist das Reinigungsmittel bevorzugt insbesondere frei von reaktiven Chlorverbindungen mit Bleichwirkung.Bleaches are defined in Ullmann's Encyclopedia of Industrial Chemistry, 6th Edition, Vol. 5, pp. 411ff . According to the invention, the cleaning agent is preferably, in particular, free from reactive chlorine compounds with a bleaching effect.

Die Erfindung hat erkannt, dass sich durch die erfindungsgemäße Kombination von Merkmalen ein Reinigungsmittel zur Verfügung stellen lässt, das insbesondere bei der gewerblichen Geschirrreinigung hoch wirksam ist, das mild alkalisch und damit wenig aggressiv ist und auf potenziell umweltschädliche Inhaltsstoffe verzichten kann. Die erfindungsgemäß eingesetzten Chelatbildner (Aminopolycarbonsäuren und Aminopolyphosphonsäuren) sind im Vergleich zu im Stand der Technik üblichen Chelatbildnern wie beispielsweise EDTA oder NTA umweltverträglich.The invention has recognized that the combination of features according to the invention makes it possible to provide a cleaning agent that is particularly effective in commercial dishwashing, that is mildly alkaline and therefore not very aggressive, and that can dispense with potentially environmentally harmful ingredients. According to the invention The chelating agents used (aminopolycarboxylic acids and aminopolyphosphonic acids) are environmentally friendly compared to the chelating agents customary in the prior art, such as EDTA or NTA.

Erfindungsgemäß kann auf hohe Alkalität verzichtet werden, es ist ebenfalls nicht erforderlich, Enzyme einzusetzen.According to the invention, high alkalinity can be dispensed with, and it is also not necessary to use enzymes.

Überraschend ist es insbesondere, dass die erfindungsgemäße Kombination auch ohne hohe und damit aggressive Alkalität, ohne Enzyme und ohne Bleichmittel im gewerblichen Küchenbereich übliche Verunreinigungen wie beispielsweise Stärke-, Tee- und Kaffeerückstände im Rahmen einer üblichen gewerblichen Geschirrreinigung entfernen kann. Im Stand der Technik ist keinerlei Reinigungsmittel bekannt, dass eine entsprechende Reinigungsleistung unter Verzicht auf die genannten Inhaltsstoffe erbringen kann.It is particularly surprising that the combination according to the invention can remove common contaminants such as starch, tea and coffee residues in the course of a customary commercial dishwashing even without high and thus aggressive alkalinity, without enzymes and without bleaching agents in the commercial kitchen area. In the prior art, no cleaning agent is known that can provide a corresponding cleaning performance without using the ingredients mentioned.

Die Erfindung ermöglicht es, ein Reinigungsmittel zur Verfügung zu stellen, das die Kriterien für das EU-Umweltzeichen gemäß VO (EG) Nr. 66/2010 und den darauf gestützten Beschluss der Kommission vom 14. November 2012 zur Festlegung der Umweltkriterien für die Vergabe des EU-Umweltzeichens für Maschinengeschirrspülmittel für den industriellen und institutionellen Bereich (2012/720/EU) erfüllt und dennoch die erforderliche Reinigungsleistung erbringt.The invention makes it possible to provide a cleaning agent that meets the criteria for the EU eco-label in accordance with Regulation (EC) No. 66/2010 and the Commission decision of November 14, 2012 based on it to determine the environmental criteria for the award of the EU Ecolabel for machine dishwashing detergents for the industrial and institutional sector (2012/720 / EU) and still provides the required cleaning performance.

Überraschenderweise hat sich somit gezeigt, dass die erfindungsgemäße Kombination ein Reinigungsmittel schafft, das ohne im Stand der Technik für wesentlich gehaltene Inhaltsstoffe eine wirksame maschinelle Reinigung von Geschirr insbesondere im gewerblichen Bereich ermöglicht. Besonders bevorzugt enthält das erfindungsgemäße Reinigungsmittel sowohl Aminopolycarbonsäuren als auch Aminopolyphosphonsäuren als auch polymere Dispergierhilfsmittel.Surprisingly, it has thus been shown that the combination according to the invention creates a cleaning agent which enables effective machine cleaning of dishes, especially in the commercial sector, without ingredients considered essential in the prior art. Especially The cleaning agent according to the invention preferably contains both aminopolycarboxylic acids and aminopolyphosphonic acids as well as polymeric dispersing aids.

Bevorzugt ist das erfindungsgemäße Reinigungsmittel frei von einem oder mehreren der folgenden Inhaltsstoffe:

  • Tensiden,
  • Phosphaten,
  • Bioziden,
  • Farbstoffen,
  • EDTA.
The cleaning agent according to the invention is preferably free from one or more of the following ingredients:
  • Surfactants,
  • Phosphates,
  • Biocides,
  • Dyes,
  • EDTA.

Bevorzugt ist das Reinigungsmittel frei von mehreren dieser Inhaltsstoffe, besonders bevorzugt enthält es keinen der genannten Inhaltsstoffe.The cleaning agent is preferably free from several of these ingredients, particularly preferably it does not contain any of the ingredients mentioned.

Der Begriff Tenside bezeichnet oberflächenaktive Stoffe wie definiert in Ullmann's Encyclopedia of Industrial Chemistry, 6th Edition, Vol. 35, S. 293ff im Abschnitt "Surfactants".The term surfactants refers to surface-active substances as defined in Ullmann's Encyclopedia of Industrial Chemistry, 6th Edition, Vol. 35, pp. 293ff in the "Surfactants" section.

Phosphate sind Salze und Ester der Phosphorsäure einschließlich deren Kondensate bzw. Polymere.Phosphates are salts and esters of phosphoric acid including their condensates and polymers.

Biozide sind Wirkstoffe und Zubereitungen, die einen oder mehrere Wirkstoffe enthalten, in der Form, in welcher sie zum Verwender gelangen, und die dazu bestimmt sind, auf chemischem oder biologischem Wege Schadorganismen zu zerstören, abzuschrecken, unschädlich zu machen, Schädigungen durch sie zu verhindern oder sie in anderer Weise zu bekämpfen (Art. 2 der Richtlinie 98/8/EG des Europäischen Parlaments und des Rates vom 16. Februar 1998 über das Inverkehrbringen von Biozid-Produkten).Biocides are active substances and preparations which contain one or more active substances in the form in which they reach the user and which are intended to chemically or biologically destroy, deter, render harmless and prevent damage caused by harmful organisms or to combat them in another way (Art. 2 of Directive 98/8 / EC of the European Parliament and Council of February 16, 1998 on the placing of biocidal products on the market).

Farbstoffe sind Farbmittel gem. DIN 55943, insbesondere lösliche Farbstoffe.Dyes are colorants in accordance with DIN 55943, in particular soluble dyes.

Die Aminopolycarbonsäuren und/oder Aminopolyphosphonsäuren können erfindungsgemäß bevorzugt drei- oder vierzähnig sein.According to the invention, the aminopolycarboxylic acids and / or aminopolyphosphonic acids can preferably be tridentate or tetradentate.

Unter den Aminopolycarbonsäuren sind MGDA (Methylglycin-N,N-Diessigsäure) und/oder GLDA (Glutaminsäure-N,N-Diessigsäure) bevorzugt, besonders bevorzugt sind beide in dem erfindungsgemäßen Reinigungsmittel enthalten. NTA als Verunreinigung im eingesetzten MGDA und GLDA ist bevorzugt nicht oder allenfalls in Konzentrationen von unter 1 Gew.-% im eingesetzten Rohstoff und unter 0,1 Gew.-% im erfindungsgemäßen Reinigungsmittel enthalten.Among the aminopolycarboxylic acids, MGDA (methylglycine-N, N-diacetic acid) and / or GLDA (glutamic acid-N, N-diacetic acid) are preferred; both are particularly preferably contained in the cleaning agent according to the invention. NTA as an impurity in the MGDA used and GLDA is preferably not contained in the raw material used or at most in concentrations of less than 1% by weight and the cleaning agent according to the invention contains less than 0.1% by weight.

Bevorzugt erfüllt das erfindungsgemäße Reinigungsmittel die Kriterien für das EU-Umweltzeichen gemäß VO (EG) Nr. 66/2010 und den darauf gestützten Beschluss der Kommission vom 14. November 2012 zur Festlegung der Umweltkriterien für die Vergabe des EU-Umweltzeichens für Maschinengeschirrspülmittel für den industriellen und institutionellen Bereich (2012/720/EU).The cleaning agent according to the invention preferably fulfills the criteria for the EU eco-label in accordance with Regulation (EC) No. 66/2010 and the Commission decision of 14 November 2012 based on this to determine the environmental criteria for the award of the EU eco-label for machine dishwashing detergents for industrial use and institutional area (2012/720 / EU).

Bevorzugt sind insbesondere erfüllt das Kriterium 3 des genannten Beschlusses (verbotene oder Beschränkungen unterworfene Stoffe oder Gemische). Folgende in diesem Kriterium 3 genannten Stoffe, die nicht oder nur in vorgegebenen Grenzen enthalten sein dürfen, seien besonders hervorgehoben, da es im Stand der Technik problematisch war, ein für die maschinelle Reinigung geeignetes Reinigungsmittel ohne diese Stoffe herzustellen:

  • EDTA,
  • reaktive Chlorverbindungen,
  • NTA als Verunreinigung in MGDA und GLDA (Grenzwerte s.o.),
  • Gesamtgehalt an Phosphor (Kriterium 3(g)).
Criterion 3 of the aforementioned decision (prohibited or restricted substances or mixtures) is particularly preferred. The following substances mentioned in this criterion 3, which may not be contained or may only be contained within specified limits, should be particularly emphasized, since it was problematic in the prior art, one for machine cleaning suitable cleaning agents without producing these substances:
  • EDTA,
  • reactive chlorine compounds,
  • NTA as an impurity in MGDA and GLDA (limit values see above),
  • Total phosphorus content (criterion 3 (g)).

Der Gesamtgehalt an Phosphaten und sonstigen Phosphorverbindungen darf die folgenden Grenzwerte gemessen in Gramm Phosphor pro Liter Wasser bei der höchsten vorgesehenen Dosierung des erfindungsgemäßen Reinigungsmittels nicht überschreiten: Weiches Wasser (0-6 °dH): 0,15 g/l Mittelhartes Wasser (7-13 °dH): 0,30 g/l Hartes Wasser (>14 °dH): 0,50 g/l The total content of phosphates and other phosphorus compounds must not exceed the following limit values measured in grams of phosphorus per liter of water at the highest intended dosage of the cleaning agent according to the invention: Soft water (0-6 ° dH): 0.15 g / l Medium hard water (7-13 ° dH): 0.30 g / l Hard water (> 14 ° dH): 0.50 g / l

Die Aminopolyphosphonsäuren umfassen bevorzugt ATMP (Aminotris(Methylenphosphonsäure) bzw. deren Salze.The aminopolyphosphonic acids preferably include ATMP (aminotris (methylenephosphonic acid) or their salts.

Ein bevorzugtes polymeres Dispergierhilfsmittel umfasst Polyacrylsäuren und/oder Polymethacrylsäuren, bzw. deren Salze. Bevorzugt weisen diese Molmassen zwischen 2.000 und 20.000, weiter vorzugsweise 4.000 und 15.000, weiter vorzugsweise 6.000 und 10.000 auf.A preferred polymeric dispersing aid comprises polyacrylic acids and / or polymethacrylic acids or their salts. These molar masses preferably have between 2,000 and 20,000, more preferably 4,000 and 15,000, more preferably 6,000 and 10,000.

Bevorzugt enthält das Reinigungsmittel zusätzlich einen Korrosionsinhibitor. Es kann sich dabei um einen Stoff handeln, der Eisenionen bindet bzw. komplexiert und so die Korrosion inhibiert. Bevorzugt ist eine Phosphonocarbonsäure, weiter bevorzugt ist PBTC (2-Phosphonobutan-1,2,4-Tricarbonsäure). Auch hier können gegebenenfalls Salze eingesetzt werden bzw. sind bevorzugt.The cleaning agent preferably also contains a corrosion inhibitor. It can be a substance that binds or complexes iron ions and thus inhibits corrosion. A phosphonocarboxylic acid is preferred, and PBTC (2-phosphonobutane-1,2,4-tricarboxylic acid) is more preferred. Here, too, salts can optionally be used or are preferred.

Gemäß einer weiteren Variante der Erfindung enthält das Reinigungsmittel bevorzugt eine Alkaliquelle, bevorzugt ein Alkalihydroxid, weiter bevorzugt KOH. Der pH-Wert kann so wie gewünscht eingestellt werden, besonders bevorzugt auf den Bereich 9-11 bzw. etwa 10.According to a further variant of the invention, the cleaning agent preferably contains an alkali source, preferably an alkali hydroxide, more preferably KOH. The pH can be adjusted as desired, particularly preferably in the range 9-11 or about 10.

Das erfindungsgemäße Reinigungsmittel weist eine Wirkstoffkombination auf, bei der die beschriebenen Inhaltsstoffe bevorzugt in einem bestimmten Gewichtsverhältnis zueinander vorhanden sind. Die relativen Gewichtsanteile der Inhaltsstoffe, sofern vorhanden, können wie nachfolgend beschrieben sein. "Sofern vorhanden" bedeutet bei optionalen bzw. fakultativen Inhaltsstoffen, dass der beschriebene Anteilsbereich lediglich dann zutrifft, wenn der entsprechende Inhaltsstoff in der jeweiligen Ausführungsform der Erfindung tatsächlich enthalten ist.

  1. a. Aminopolycarbonsäuren 3 bis 15, vorzugsweise 5 bis 10,
  2. b. polymere Dispergierhilfsmittel 1 bis 5, vorzugsweise 2 bis 4,
  3. c. Polyphosphonsäuren 0,5 bis 3, vorzugsweise 1,5 bis 2,5,
  4. d. Korrosionsinhibitor 0,5 bis 3, vorzugsweise 1 bis 2,
  5. e. Alkaliquelle, berechnet als KOH, 0,3 bis 2, vorzugsweise 0,5 bis 1,5.
The cleaning agent according to the invention has an active ingredient combination in which the ingredients described are preferably present in a certain weight ratio to one another. The relative weight proportions of the ingredients, if any, can be as described below. In the case of optional or facultative ingredients, “if present” means that the proportion range described only applies if the corresponding ingredient is actually contained in the respective embodiment of the invention.
  1. a. Aminopolycarboxylic acids 3 to 15, preferably 5 to 10,
  2. b. polymeric dispersing agents 1 to 5, preferably 2 to 4,
  3. c. Polyphosphonic acids 0.5 to 3, preferably 1.5 to 2.5,
  4. d. Corrosion inhibitor 0.5 to 3, preferably 1 to 2,
  5. e. Alkali source, calculated as KOH, 0.3 to 2, preferably 0.5 to 1.5.

Berechnet als KOH bedeutet, dass der Gewichtsanteil der eingesetzten Alkaliquelle anhand ihrer Hydroxygruppen umgerechnet wird in die äquivalente Menge KOH.Calculated as KOH means that the weight fraction of the alkali source used is converted into the equivalent amount of KOH on the basis of its hydroxyl groups.

Die verkaufsfertige Form des erfindungsgemäßen Reinigungsmittels kann bevorzugt flüssig und weiter bevorzugt als Konzentrat formuliert sein, das bei oder unmittelbar vor der Anwendung mit Wasser verdünnt wird. Erfindungsgemäß ist es bevorzugt, dass ein solches Konzentrat die jeweiligen Inhaltsstoffe, sofern vorhanden, in den nachfolgend aufgeführten absoluten Gewichtsanteilen enthält:

  1. a. Aminopolycarbonsäuren 3 bis 15, vorzugsweise 5 bis 10 Gew.-%,
  2. b. polymere Dispergierhilfsmittel 1 bis 5, vorzugsweise 2 bis 4 Gew.-%,
  3. c. Polyphosphonsäuren 0,5 bis 3, vorzugsweise 1,5 bis 2,5 Gew.-%,
  4. d. Korrosionsinhibitor 0,5 bis 3, vorzugsweise 1 bis 2 Gew.-%,
  5. e. Alkaliquelle, berechnet als KOH, 0,3 bis 2, vorzugsweise 0,5 bis 1,5 Gew.-%.
The ready-to-sell form of the cleaning agent according to the invention can preferably be liquid and more preferably formulated as a concentrate which is diluted with water during or immediately before use. According to the invention, it is preferred that such a concentrate contains the respective ingredients, if any, in the absolute weight proportions listed below:
  1. a. Aminopolycarboxylic acids 3 to 15, preferably 5 to 10 wt .-%,
  2. b. polymeric dispersants 1 to 5, preferably 2 to 4 wt .-%,
  3. c. Polyphosphonic acids 0.5 to 3, preferably 1.5 to 2.5% by weight,
  4. d. Corrosion inhibitor 0.5 to 3, preferably 1 to 2% by weight,
  5. e. Alkali source, calculated as KOH, 0.3 to 2, preferably 0.5 to 1.5% by weight.

Ein solches Konzentrat kann mit Wasser zu einer Reinigerlösung bzw. Reinigerflotte verdünnt werden. Es kann in dieser Reinigerflotte in einer Konzentration von 0,1 bis 2 Gew.-%, vorzugsweise 0,1 bis 1 Gew.-%, weiter vorzugsweise 0,2 bis 0,5 Gew.-% eingesetzt werden.Such a concentrate can be diluted with water to form a cleaning solution or cleaning solution. It can be used in this cleaning solution in a concentration of 0.1 to 2% by weight, preferably 0.1 to 1% by weight, more preferably 0.2 to 0.5% by weight, are used.

In der eingesetzten Reinigerflotte sind somit die absoluten Konzentrationen der jeweiligen Inhaltsstoffe, sofern vorhanden, bevorzugt in einem Bereich, der um den Faktor 50-1.000, weiter vorzugsweise 100-1.000, weiter vorzugsweise 200-500 geringer ist als die bevorzugten absoluten Gewichtsanteile des oben beschriebenen Konzentrats. Die daraus zu errechnenden absoluten Gewichtsanteile in der eingesetzten Reinigerflotte sind ausdrücklich ebenfalls Gegenstand der Offenbarung der vorliegenden Patentanmeldung.In the detergent liquor used, the absolute concentrations of the respective ingredients, if present, are therefore preferably in a range that is a factor of 50-1,000, more preferably 100-1,000, more preferably 200-500 lower than the preferred absolute weight proportions of the above-described Concentrate. The absolute weight fractions to be calculated from this in the detergent liquor used are also expressly the subject of the disclosure of the present patent application.

Gegenstand der Erfindung ist ebenfalls die Verwendung eines erfindungsgemäßen Reinigungsmittels zur Reinigung von Geschirr, insbesondere zur Entfernung von Verschmutzungen ausgewählt aus der Gruppe bestehend aus Kaffee- und Teerückständen sowie Stärke- und Eiweißrückständen von Geschirr.The invention also relates to the use of a cleaning agent according to the invention for cleaning dishes, in particular for removing soiling selected from the group consisting of coffee and tea residues and starch and protein residues from dishes.

Ebenfalls Gegenstand der Erfindung ist ein Verfahren zur maschinellen Reinigung von Geschirr, mit den Schritten:

  1. a. optional Vorspülen,
  2. b. Reinigen mit einem erfindungsgemäßen Reiniger,
  3. c. Klarspülen.
The invention also relates to a method for the automatic cleaning of dishes, with the steps:
  1. a. optional pre-rinse,
  2. b. Cleaning with a cleaner according to the invention,
  3. c. Rinse.

Das fakultative Vorspülen sowie das Klarspülen erfolgen in dem Fachmann geläufiger Weise und bedürfen hier keiner näheren Erläuterung. An das Klarspülen können sich weitere Schritte wie beispielsweise ein Trocknen anschließen.The optional pre-rinsing and final rinsing are carried out in a manner familiar to the person skilled in the art and do not require any further explanation here. The final rinse can be followed by further steps such as drying.

Im Rahmen des erfindungsgemäßen Verfahrens kann bevorzugt das Reinigen in Schritt b. über einen Zeitraum von 10 s bis 10 min, weiter vorzugsweise 2 bis 6 min erfolgen.In the context of the method according to the invention, the cleaning in step b. take place over a period of 10 s to 10 min, more preferably 2 to 6 min.

Das Reinigen kann bevorzugt bei einer Temperatur von 20 bis 80°c, vorzugsweise 30 bis 70°C, weiter vorzugsweise 50 bis 70°C stattfinden. Der beschriebene bevorzugte Zeitraum und bevorzugte Temperaturbereich sind unabhängig voneinander Gegenstand und Parameter der vorliegenden Erfindung.The cleaning can preferably take place at a temperature of 20 to 80 ° C, preferably 30 to 70 ° C, more preferably 50 to 70 ° C. The preferred time period and preferred temperature range described are, independently of one another, the subject matter and parameters of the present invention.

Bevorzugt erfolgt das Reinigen in Schritt b. mit einer wässrigen Verdünnung eines oben beschriebenen und in den nachfolgenden Ausführungsbeispielen beispielhaft offenbarten Konzentrats. Dieses Konzentrat wird bevorzugt in einer Konzentration von 0,1 bis 2 Gew.-%, weiter vorzugsweise 0,1 bis 1 Gew.-%, weiter vorzugsweise 0,2 bis 0,5 Gew.-% eingesetzt.The cleaning is preferably carried out in step b. with an aqueous dilution of a concentrate described above and disclosed by way of example in the following exemplary embodiments. This concentrate is preferably used in a concentration of 0.1 to 2% by weight, more preferably 0.1 to 1% by weight, more preferably 0.2 to 0.5% by weight.

Ausführungsbeispiele der Erfindung werden nachfolgend beschrieben.Embodiments of the invention are described below.

Beispiel 1example 1

Eine Rezeptur für ein erfindungsgemäßes Reinigungsmittel lautet wie folgt: Anteil [Gew.-%] Wirkstoffanteil [Gew. -%] PAS 8000 N, 45% 5,00 2,25 ATMP, 5 Na, 40% 5,00 2,00 MGDA, 3 Na, 40% 9,00 3,60 GLDA, 4 Na, 47% 9,00 4,23 PBTC, 50% 3,00 1,5 KOH, 45% 2,10 0,95 Wasser, vollentsalzt 66,90 A recipe for a cleaning agent according to the invention is as follows: Proportion [% by weight] Active ingredient content [wt. -%] PAS 8000 N, 45% 5.00 2.25 ATMP, 5 Na, 40% 5.00 2.00 MGDA, 3 Na, 40% 9.00 3.60 GLDA, 4 Na, 47% 9.00 4.23 PBTC, 50% 3.00 1.5 KOH, 45% 2.10 0.95 Water, fully demineralized 66.90

Die Rezepturbestandteile werden gemischt und 15 min bei Raumtemperatur gerührt, bis eine klare Lösung entstanden ist. Das erhaltene Konzentrat weist einen pH-Wert von 10 auf.The recipe ingredients are mixed and stirred for 15 minutes at room temperature until a clear solution has formed. The concentrate obtained has a pH of 10.

Beispiel 2Example 2

In diesem Beispiel wird die Reinigungsleistung der Rezeptur gemäß Beispiel 1 verglichen mit enzymatischen und stark alkalischen Reinigungsmitteln des Standes der Technik. Folgende Reinigungsmittel wurden als Vergleich (nicht erfindungsgemäß) herangezogen:

  • neodisher® BioClean (enzymatischer Reiniger Fa. Dr. Weigert)
  • neodisher® Alka 240 (stark ätzalkalischer Reiniger Fa. Dr. Weigert)
  • neodisher® Alka 440 (stark ätzalkalischer Reiniger Fa. Dr. Weigert, zusätzlich enthaltend Natriumchlorit)
In this example, the cleaning performance of the formulation according to Example 1 is compared with enzymatic and strongly alkaline cleaning agents of the prior art. The following cleaning agents were used as a comparison (not according to the invention):
  • neodisher® BioClean (enzymatic cleaner from Dr. Weigert)
  • neodisher® Alka 240 (strongly alkaline cleaner from Dr. Weigert)
  • neodisher® Alka 440 (strongly caustic cleaner from Dr. Weigert, additionally containing sodium chlorite)

In insgesamt vier Vergleichsversuchen wurde das Reinigungsmittel des Beispiels 1 im Vergleich zu den drei genannten Reinigungsmitteln des Standes der Technik in drei verschiedenen Geschirrspülmaschinen für gewerbliche Zwecke getestet. Dabei wurden jeweils identische Reinigungskonzentrationen der Reinigungsmittel und identische Reinigungsbedingungen (Verfahrensbedingungen) eingesetzt und jeweils identisch verschmutzte Teilchargen von verunreinigtem Geschirr (verunreinigt mit Stärke, Eiweiß, Kaffee- und Teerückständen) gereinigt. Die Reinigungsergebnisse wurden durch Inaugenscheinnahme bewertet, die Unterschiede bei einer Reinigung mit dem erfindungsgemäßen Reinigungsmittel sind in der nachfolgenden Tabelle in der Spalte "Ergebnis" wiedergegeben. Man erkennt, dass das erfindungsgemäße Reinigungsmittel trotz des Verzichts auf Alkalität und Enzymen, Bleichmitteln und dergleichen eine verbesserte Reinigungsleistung erzielt. Vergleichsreiniger Geschirrspülmaschine Dosierung Temperatur im Waschtank Kontaktzeit Ergebnis neodisher BioClean Hobart-Bandgeschirrspülmaschine 3 g/l 64°C 2 min Bessere Entfernung von Kaffee- und Teerückständen. Gleich gute Entfernung von Stärke und Eiweiß. Geringere Schmutzablagerun im Maschinentank neodisher BioClean Miele G 7760 3 g/l 55°C 2 min Bessere Entfernung von Kaffee- und Teerückständen. Gleich gute Entfernung von Stärke und Eiweiß. Geringere Schmutzablagerun im Maschinentank neodisher Alka 240 Hobart-Bandgeschirrspülmaschine 2,1 g/l 62°C 130 sec Gleich gut hinsichtlich Entfernung von Kaffee, Tee, Stärke und Eiweiß neodisher Alka 440 Winterhalter STR 1-Tank-Maschine 2,5 g/l 64 °C 3 min Bessere Entfernung von Stärke, Kaffe und Tee. Gleich gute Eiweißentfernung. Auffällig war das "glänzende" Spülgut In a total of four comparative tests, the cleaning agent of Example 1 was tested in comparison with the three stated cleaning agents of the prior art in three different dishwashers for commercial purposes. In each case, identical cleaning concentrations of the cleaning agents and identical cleaning conditions (process conditions) were used and identically soiled partial batches were cleaned of soiled dishes (soiled with starch, protein, coffee and tea residues). The cleaning results were assessed by visual inspection; the differences when cleaning with the cleaning agent according to the invention are shown in the table below in the "Result" column. It can be seen that the cleaning agent according to the invention achieves an improved cleaning performance in spite of the absence of alkalinity and enzymes, bleaching agents and the like. Comparative cleaner dishwasher dosage Temperature in the wash tank Contact time Result neodisher BioClean Hobart belt dishwasher 3 g / l 64 ° C 2 min Better removal of coffee and tea residues. Equally good removal of starch and protein. Less dirt deposits in the machine tank neodisher BioClean Miele G 7760 3 g / l 55 ° C 2 min Better removal of coffee and tea residues. Equally good removal of starch and protein. Less dirt deposits in the machine tank neodisher Alka 240 Hobart belt dishwasher 2.1 g / l 62 ° C 130 sec Equally good in terms of removing coffee, tea, starch and protein neodisher Alka 440 Winterhalter STR 1-tank machine 2.5 g / l 64 ° C 3 min Better removal of starch, coffee and tea. Equally good protein removal. The "shiny" items were noticeable

Claims (15)

  1. Cleaning agent for the machine cleaning of dishware, characterized by the following features:
    a. it contains at least one chelating agent selected from the group consisting of aminopolycarboxylic acids,
    b. it contains at least one polymeric dispersing aid and/or at least one aminopolyphosphonic acid,
    c. the pH is 8 to 12, preferably 8 to 11, more preferably 9 to 11,
    d. the cleaning agent is enzyme-free,
    e. the cleaning agent is bleach-free,
    f. it contains an alkali metal source which is an alkali metal hydroxide.
  2. Cleaning agent according to Claim 1, characterized in that it is free from one or more of the following ingredients:
    - surfactants,
    - phosphates,
    - biocides,
    - colorants,
    - EDTA.
  3. Cleaning agent according to Claim 1 or 2, characterized in that the aminopolycarboxylic acids and/or aminopolyphosphonic acids are tri- or tetradentate.
  4. Cleaning agent according to Claim 3, characterized in that the aminopolycarboxylic acids comprise MGDA and/or GLDA.
  5. Cleaning agent according to Claim 3 or 4, characterized in that the aminopolyphosphonic acids comprise ATMP.
  6. Cleaning agent according to one of Claims 1 to 5, characterized in that the polymeric dispersing aid comprises polyacrylic acids and/or polymethacrylic acids.
  7. Cleaning agent according to Claim 6, characterized in that the polyacrylic acids and/or polymethacrylic acids have molar masses of between 2000 and 20 000, preferably 4000 and 15 000, more preferably 6000 and 10 000.
  8. Cleaning agent according to one of Claims 1 to 7, characterized in that it additionally contains a corrosion inhibitor, preferably a phosphonocarboxylic acid, more preferably PBTC.
  9. Cleaning agent according to one of Claims 1 to 8, characterized in that the alkali metal hydroxide is KOH.
  10. Cleaning agent according to one of Claims 1 to 9, characterized in that it is formulated as a liquid.
  11. Cleaning agent according to Claim 10, characterized in that it is formulated as a concentrate and in that the proportions by weight of the ingredients, when present, are as follows:
    a. aminopolycarboxylic acids 3 to 15, preferably 5 to 10% by weight,
    b. polymeric dispersing aids 1 to 5, preferably 2 to 4% by weight,
    c. polyphosphonic acids 0.5 to 3, preferably 1 to 2% by weight,
    d. corrosion inhibitor 0.5 to 3, preferably 1 to 2% by weight,
    e. alkali metal source, calculated as KOH, 0.3 to 2, preferably 0.5 to 1.5% by weight.
  12. Use of a cleaning agent according to one of Claims 1 to 11 for cleaning dishware, in particular for removing soiling selected from the group consisting of coffee and tea residues and starch and protein residues from dishware.
  13. Process for the machine cleaning of dishware, comprising the steps of:
    a. optionally pre-rinsing,
    b. cleaning with a cleaner according to one of Claims 1 to 11,
    c. rinsing.
  14. Process according to Claim 13, characterized in that the cleaning in step b. takes place over a period of from 10 s to 10 min, preferably 2 to 6 min, at a temperature of from 20 to 80°C, preferably 30 to 70°C, more preferably 50 to 70°C.
  15. Process according to Claim 13 or 14, characterized in that the cleaning in step b. is effected with an aqueous dilution of a concentrate according to Claim 11 and in that this concentrate is used at a concentration of from 0.1 to 2% by weight, preferably 0.1 to 1% by weight, more preferably 0.2 to 0.5% by weight.
EP14161314.1A 2014-03-24 2014-03-24 Cleaning agent and method for cleaning dishes Active EP2924101B1 (en)

Priority Applications (4)

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PL14161314T PL2924101T3 (en) 2014-03-24 2014-03-24 Cleaning agent and method for cleaning dishes
ES14161314T ES2884253T3 (en) 2014-03-24 2014-03-24 Cleaning agent and dishwashing procedure
HUE14161314A HUE055958T2 (en) 2014-03-24 2014-03-24 Cleaning agent and method for cleaning dishes
EP14161314.1A EP2924101B1 (en) 2014-03-24 2014-03-24 Cleaning agent and method for cleaning dishes

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EP2924101B1 true EP2924101B1 (en) 2021-07-07

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HUE042276T2 (en) * 2016-09-08 2019-06-28 Chemische Fabrik Dr Weigert Gmbh & Co Kg Cleaner for hot beverages machines

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WO2009087541A1 (en) 2008-01-04 2009-07-16 Ecolab Inc. Solidification matrix using an aminocarboxylate
WO2009148538A1 (en) 2008-05-30 2009-12-10 American Sterilizer Company Biodegradable scale control composition for use in highly concentrated alkaline detergents
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DE102009027160A1 (en) 2009-06-24 2010-12-30 Henkel Ag & Co. Kgaa Machine dishwashing detergent
DE102009027162A1 (en) 2009-06-24 2010-12-30 Henkel Ag & Co. Kgaa Machine dishwashing detergent
WO2011051419A1 (en) 2009-10-30 2011-05-05 Henkel Ag & Co. Kgaa Dishwasher detergent
DE102013225920A1 (en) 2013-12-13 2015-06-18 Henkel Ag & Co. Kgaa Phosphate-free liquid dishwashing detergent
EP3599270A1 (en) 2018-07-23 2020-01-29 Henkel AG & Co. KGaA Cleaning composition with silver protection

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ES2884253T3 (en) 2021-12-10

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