EP1061123B2 - Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen - Google Patents

Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen Download PDF

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Publication number
EP1061123B2
EP1061123B2 EP00303177A EP00303177A EP1061123B2 EP 1061123 B2 EP1061123 B2 EP 1061123B2 EP 00303177 A EP00303177 A EP 00303177A EP 00303177 A EP00303177 A EP 00303177A EP 1061123 B2 EP1061123 B2 EP 1061123B2
Authority
EP
European Patent Office
Prior art keywords
washing machine
dish washing
automatic dish
surfactant
cleaner according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00303177A
Other languages
English (en)
French (fr)
Other versions
EP1061123B1 (de
EP1061123A1 (de
Inventor
Alan Digby Unilever Resrch.Vlaardingen Tomlinson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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Filing date
Publication date
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Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP00303177A priority Critical patent/EP1061123B2/de
Publication of EP1061123A1 publication Critical patent/EP1061123A1/de
Publication of EP1061123B1 publication Critical patent/EP1061123B1/de
Application granted granted Critical
Publication of EP1061123B2 publication Critical patent/EP1061123B2/de
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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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • 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
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C11D3/2086—Hydroxy carboxylic acids-salts thereof
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces

Definitions

  • the present invention is in the field of machine dishwashing. More specifically, the invention encompasses a cleaner for automatic dishwashing machines.
  • the present invention relates to a composition used to clean dish washing machines. Such cleaning compositions are frequently used by the consumer to clean the dish washer itself and so remove deposits after the machine has been used to clean crockery.
  • the present invention relates to a composition for cleaning dish washers in which the problem of co-agulation is mitigated.
  • the present invention provides a granular automatic dish washing machine cleaner comprising at least 50% wt of the total composition of a fully hydrated organic acid and at least 0.5 % wt of the total composition of a surfactant
  • the present invention also provides the use of citric acid monohydrate in a dish washing machine cleaner to prevent mass solidification.
  • compositions of the present,invention comprise a fully hydrated organic acid as an essential element.
  • Suitable fully hydrated organic acids organic acids include, for example, carboxylic acids, such as citric and succinic acids, polycarboxylic acids, such as polyacrylic acid, and also acetic acid, boric acid, malonic acid, adipic acid, fumaric acid, lactic acid, glycolic acid, sulphamic acid, tartaric acid, tartronic acid, maloic acid, their derivatives and any mixtures of the foregoing.
  • Suitable water-soluble monomeric or oligomeric carboxylates can be selected from a wide range of compounds but such compounds preferably have a first carboxyl logarithmic acidity/constant (pK 1 ) of less than 9, preferably of between 2 and 8.5, more preferably of between 2.5 and 7.5.
  • pK 1 first carboxyl logarithmic acidity/constant
  • Polycarboxylic acids containing four carboxy groups include oxydisuccinic acids, 1,1,2,2-ethane tetracarboxylic acids, 1,1,3,3-propane tetracarboxylic acids and 1,1,2,3-propane tetracarboxylic acids.
  • Polycarboxylic acids containing sulfo substituents include the sulfosuccinic derivatives, and the sulfonated pyrolysed citratic acids.
  • the preferred polycarboxylic acids are hydroxycarboxylic containing up to three carboxy groups per molecules, more particularly citric acid monohydrate.
  • the partially/fully hydrated acids have an average particle size from 0.8 to 3 d m (RR)/mm, more preferably from 1.4 to 2.5 d m (RR)/mm.
  • the 95 % of the particles have a particle size greater than 1mm and less than 3mm.
  • the organic acid is present at a level of at least 50 wt% of the total formulation, more preferably at a level greater than 70 wt%, most preferably at a level from 85 wt% to 98 wt%.
  • a surfactant system comprising a surfactant selected from nonionic, anionic, cationic, ampholytic and zwitterionic surfactants and mixtures thereof is also present in the composition.
  • the surfactant is a low to non foaming nonionic surfactant, which includes any alkoxylated nonionic surface-active agent wherein the alkoxy moiety is selected from the group consisting of ethylene oxide, propylene oxide and mixtures thereof, is preferably used to improve the detergency without excessive foaming especially preferred are ethoxylated and/or propoxylated straight chain alcohols.
  • nonionic surfactant should be avoided. Normally, an amount of 10% by weight or lower, preferably 7% by weight or lower, most preferably 5% by weight or lower and preferably 0.1 % by weight or higher, more preferably 0.5% by weight or higher is quite sufficient.
  • nonionic surfactants for use in the invention are the low- to non-foaming ethoxylated straight-chain alcohols of Plurafac LF series ex BASF, Synperonic series ex ICI; of the Lutensol® LF series, supplied by the BASF Company and of the Triton® DF series, supplied by the Rohm & Haas Company.
  • anionic surfactant may be used but may require the additional presence of an antifoam to surpress foaming. If an anionic surfactant is used it is advantageously present at levels of 2 wt% or below.
  • suitable flow aids include Aluminium silicate (Alusil), Calcium silicate (Calflow) and silicas.
  • Bleach material may optionally be incorporated in composition for use in processes according to the present invention, but preferably are not present.
  • the bleach material may be a chlorine- or bromine-releasing agent or a peroxygen compound. Peroxygen based bleach materials are however preferred.
  • compositions that may be present include crystal-growth inhibitors, threshold agents; perfumes and dyestuffs and the like.
  • the dish washing machine cleaner has gives a pH of 3 or less in a 1% aqueous solution at 20°C. More preferably the composition has a pH from 1 to 2 in a 1% aqueous solution at 20°C.
  • the dish washing composition is granular.
  • Granular in the context of the present invention includes both powdered material and tablets.
  • the cleaning composition may be added to the machine via the dispenser drawer or sprinkled directly into the base of the dish washer. It is particularly advantageous if the composition is added directly to the base of the machine, as this leads to an effective dosing level.
  • Dishwash compositions according to the present invention may be dosed in the wash liquor at levels of from 30 g/l to 2.5 g/l.
  • compositions were tested in a robotised Miele G5953C (total water hardness 17°FH, including temporary hardness of 9°FH).
  • compositions were dosed at a level of 120 g/wash by sprinkling the powder in the base of the machine near the sieve; the main wash time was 20 minutes; the drying time with open door was 10-20 minutes; the washing temperature was up to 65°C.
  • Table 2 Example 1 A Consecutive No. of runs before pump breakdown No breakdown 10

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)

Claims (7)

  1. Granuläres Reinigungsmittel für eine automatische Geschirrspülmaschine, umfassend:
    a) zumindest 50 Gew.-% der Gesamtzusammensetzung einer vollständig hydratisierten, organischen Säure und
    b) zumindest 0,5 Gew.-% der Gesamtzusammensetzung eines oberflächenaktiven Stoffes.
  2. Reinigungsmittel für eine automatische Geschirrspülmaschine nach Anspruch 1, wobei die vollständig hydratisierte, organische Säure Zitronensäuremonohydrat ist.
  3. Reinigungsmittel für eine automatische Geschirrspülmaschine nach Anspruch 1 oder Anspruch 2, wobei der oberflächenaktive Stoff ein nicht-ionischer oberflächenaktiver Stoff ist.
  4. Reinigungsmittel für eine automatische Geschirrspülmaschine nach Anspruch 3, wobei der nicht-ionische oberflächenaktive Stoff ein ethoxylierter und/oder propoxylierter, geradkettiger Alkohol ist.
  5. Reinigungsmittel für eine automatische Geschirrspülmaschine nach einem der vorherigen Ansprüche, wobei der pH einer 1%igen wässerigen Lösung bei 20 °C 3 oder weniger ist.
  6. Reinigungsmittel für eine automatische Geschirrspülmaschine nach einem der vorherigen Ansprüche, das ferner einen Fließverbesserer umfaßt.
  7. Verfahren zur Reinigung einer Geschirrspülmaschine, umfassend die Zugabe eines Reinigungsmittels für eine Geschirrspülmaschine wie in einem der vorherigen Ansprüche beansprucht, zu einer Geschirrspülmaschine.
EP00303177A 1999-05-28 2000-04-14 Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen Expired - Lifetime EP1061123B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00303177A EP1061123B2 (de) 1999-05-28 2000-04-14 Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP99304182 1999-05-28
EP99304182 1999-05-28
EP00303177A EP1061123B2 (de) 1999-05-28 2000-04-14 Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen

Publications (3)

Publication Number Publication Date
EP1061123A1 EP1061123A1 (de) 2000-12-20
EP1061123B1 EP1061123B1 (de) 2004-06-30
EP1061123B2 true EP1061123B2 (de) 2007-02-14

Family

ID=26073120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00303177A Expired - Lifetime EP1061123B2 (de) 1999-05-28 2000-04-14 Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen

Country Status (1)

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EP (1) EP1061123B2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0004130D0 (en) * 2000-02-23 2000-04-12 Procter & Gamble Detergent tablet
FR2831181A1 (fr) * 2001-10-23 2003-04-25 Rhodia Polyamide Intermediates Tablette antitartre acide et son utilisation en lavage automatique de la vaisselle
US20060118141A1 (en) * 2004-12-08 2006-06-08 The Procter & Gamble Company Method of cleaning a washing machine or a dishwasher
GB0525314D0 (en) * 2005-12-13 2006-01-18 Reckitt Benckiser Nv Method and composition
DE102006009138A1 (de) * 2006-02-24 2007-08-30 Henkel Kgaa Wasch- oder Reingiungsmittel
DE102007045210A1 (de) * 2007-09-21 2009-04-02 Brauns-Heitmann Gmbh & Co. Kg Mischung zum Entkalken, Reinigen und/oder Desinfizieren
ES2548772T3 (es) 2009-12-10 2015-10-20 The Procter & Gamble Company Producto para lavavajillas y uso del mismo
DE102012014268B4 (de) * 2012-07-19 2014-02-20 Brauns-Heitmann Gmbh & Co. Kg Vorrichtung zur Reinigung und/oder Entkalkung zur Verwendung in Geschirrspül- oder Waschmaschinen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259830B2 (de) * 1972-12-07 1981-01-29 Hoechst Ag, 6000 Frankfurt Verfahren zum maschinellen Spülen von Geschirr, Bestecken oder Gläsern
DE3002789A1 (de) * 1980-01-26 1981-07-30 Henkel KGaA, 4000 Düsseldorf Fluessiges reinigung- und pflegemittel
EP0256148A1 (de) * 1986-08-12 1988-02-24 Joh. A. Benckiser GmbH Flüssiges, granuliertes oder pulverförmiges Reinigungsmittel, insbesondere für Geschirrspülmaschinen
EP0612843A1 (de) * 1993-02-22 1994-08-31 Unilever N.V. Körnige saure Reiniger

Also Published As

Publication number Publication date
EP1061123B1 (de) 2004-06-30
EP1061123A1 (de) 2000-12-20

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