EP1061123B1 - Automatic dish-washing machine cleaning process and compositions relating thereto - Google Patents
Automatic dish-washing machine cleaning process and compositions relating thereto Download PDFInfo
- Publication number
- EP1061123B1 EP1061123B1 EP00303177A EP00303177A EP1061123B1 EP 1061123 B1 EP1061123 B1 EP 1061123B1 EP 00303177 A EP00303177 A EP 00303177A EP 00303177 A EP00303177 A EP 00303177A EP 1061123 B1 EP1061123 B1 EP 1061123B1
- 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
Links
- 239000000203 mixture Substances 0.000 title claims description 25
- 238000004851 dishwashing Methods 0.000 title claims description 16
- 238000004140 cleaning Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 8
- 239000002736 nonionic surfactant Substances 0.000 claims description 7
- 150000007524 organic acids Chemical class 0.000 claims description 5
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229960002303 citric acid monohydrate Drugs 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 description 7
- 150000007513 acids Chemical class 0.000 description 6
- 238000005187 foaming Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 239000003945 anionic surfactant Substances 0.000 description 3
- 239000007844 bleaching agent Substances 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- ROBFUDYVXSDBQM-UHFFFAOYSA-N hydroxymalonic acid Chemical compound OC(=O)C(O)C(O)=O ROBFUDYVXSDBQM-UHFFFAOYSA-N 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- -1 organic acids organic acids Chemical class 0.000 description 2
- 239000002304 perfume Substances 0.000 description 2
- CFPOJWPDQWJEMO-UHFFFAOYSA-N 2-(1,2-dicarboxyethoxy)butanedioic acid Chemical class OC(=O)CC(C(O)=O)OC(C(O)=O)CC(O)=O CFPOJWPDQWJEMO-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910000632 Alusil Inorganic materials 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229920002257 Plurafac® Polymers 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 235000015165 citric acid Nutrition 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid group Chemical group C(CC(O)(C(=O)O)CC(=O)O)(=O)O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- XWENCHGJOCJZQO-UHFFFAOYSA-N ethane-1,1,2,2-tetracarboxylic acid Chemical class OC(=O)C(C(O)=O)C(C(O)=O)C(O)=O XWENCHGJOCJZQO-UHFFFAOYSA-N 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000011087 fumaric acid Nutrition 0.000 description 1
- 239000003966 growth inhibitor Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002563 ionic surfactant Substances 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 229920001983 poloxamer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- NJKRDXUWFBJCDI-UHFFFAOYSA-N propane-1,1,2,3-tetracarboxylic acid Chemical class OC(=O)CC(C(O)=O)C(C(O)=O)C(O)=O NJKRDXUWFBJCDI-UHFFFAOYSA-N 0.000 description 1
- NJEVMKZODGWUQT-UHFFFAOYSA-N propane-1,1,3,3-tetracarboxylic acid Chemical class OC(=O)C(C(O)=O)CC(C(O)=O)C(O)=O NJEVMKZODGWUQT-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000011044 succinic acid Nutrition 0.000 description 1
- 150000003444 succinic acids Chemical class 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- GPRLSGONYQIRFK-MNYXATJNSA-N triton Chemical compound [3H+] GPRLSGONYQIRFK-MNYXATJNSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002888 zwitterionic surfactant Substances 0.000 description 1
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
-
- C11D2111/14—
Description
- 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.
- Conventional cleaning machine cleaning products are put in the machine's dispenser and/or sprinkled on the base of machine. However, it has been found that occasionally conventional dish washer cleaning formulations tend to coaggulate in the sieve in the bottom of the machine thus forming a solid mass that can block the machine and pump.
- The present invention relates to a composition for cleaning dish washers in which the problem of co-agulation is mitigated.
- Accordingly the present invention provides an automatic dish washing machine cleaner comprising at least 50% wt of the total composition of a partially or 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.
- The compositions of the present invention comprise a partially or fully hydrated organic acid as an essential element. Suitable partially or 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 (pK1) of less than 9, preferably of between 2 and 8.5, more preferably of between 2.5 and 7.5.
- 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.
- Of the above, the preferred polycarboxylic acids are hydroxycarboxylic containing up to three carboxy groups per molecules, more particularly citric acid monohydrate.
- It is preferable if the partially/fully hydrated acids have an average particle size from 0.8 to 3 dm (RR)/mm, more preferably from 1.4 to 2.5 dm (RR)/mm.
- It is also preferable if 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.
- Typically 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.
- However, an excessive proportion of 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.
- Examples of suitable 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.
- Other surfactants such as 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.
- It is advantageous if a flow aid is present in the composition 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.
- Further optional ingredients that may be present include crystal-growth inhibitors, threshold agents; perfumes and dyestuffs and the like.
- Preferably 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 preferably 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.
- The invention will now be illustrated by the following non limiting Examples. Examples of the invention are illustrated by a number, comparative Examples are illustrated by a letter.
- All percentages are on a weight basis.
-
WT/% 1 A Citric acid monohydrate 92.1 - Citric acid Anhydrous 92.1 Starch based flow aid 5.5 5.5 Perfume 0.2 0.2 Nonionic surfactant 2.0 2.0 minors to 100 to 100 Particle Size 1.8 mm 1.8 mm - The compositions were tested in a robotised Miele G5953C (total water hardness 17°FH, including temporary hardness of 9°FH).
- The 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.
Example 1 A Consecutive No. of runs before pump breakdown No breakdown 10
Claims (7)
- An automatic dish washing machine cleaner comprising:a) at least 50% wt of the total composition of a partially or fully hydrated organic acid and;b) at least 0.5 % wt of the total composition of a surfactant
- An automatic dish washing machine cleaner according to claim 1 in which the partially or fully hydrated organic acid is citric acid monohydrate.
- An automatic dish washing machine cleaner according to claim 1 or claim 2 in which the surfactant is a nonionic surfactant.
- An automatic dish washing machine cleaner according to claim 3 in which the nonionic surfactant is an ethoxylated and/or propoxylated straight-chain alcohol.
- An automatic dish washing machine cleaner according to any preceding claim in which the pH of a 1% aqueous solution at 20°C is 3 or less.
- An automatic dish washing machine cleaner according to any preceding claim which further comprises a flow aid.
- A process for cleaning a dish washing machine comprising adding a machine dish washing cleaner as claimed in any preceding claim to a machine dish washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00303177A EP1061123B2 (en) | 1999-05-28 | 2000-04-14 | Automatic dish-washing machine cleaning process and compositions relating thereto |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99304182 | 1999-05-28 | ||
| EP99304182 | 1999-05-28 | ||
| EP00303177A EP1061123B2 (en) | 1999-05-28 | 2000-04-14 | Automatic dish-washing machine cleaning process and compositions relating thereto |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1061123A1 EP1061123A1 (en) | 2000-12-20 |
| EP1061123B1 true EP1061123B1 (en) | 2004-06-30 |
| EP1061123B2 EP1061123B2 (en) | 2007-02-14 |
Family
ID=26073120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00303177A Expired - Lifetime EP1061123B2 (en) | 1999-05-28 | 2000-04-14 | Automatic dish-washing machine cleaning process and compositions relating thereto |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1061123B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0004130D0 (en) | 2000-02-23 | 2000-04-12 | Procter & Gamble | Detergent tablet |
| FR2831181A1 (en) * | 2001-10-23 | 2003-04-25 | Rhodia Polyamide Intermediates | Scale inhibitor composition in tablet form for prewashing dishes in automatic dishwashers |
| 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 (en) * | 2006-02-24 | 2007-08-30 | Henkel Kgaa | Detergent for removing greasy or oily soil and cleaning and conditioning hard surface, e.g. washing machine or automatic dishwasher contains nonionic surfactant mixture of (poly)alkylene oxide mono- or di-ether and amine oxide |
| DE102007045210A1 (en) * | 2007-09-21 | 2009-04-02 | Brauns-Heitmann Gmbh & Co. Kg | Mixture for descaling, cleaning and / or disinfecting |
| EP2333042B1 (en) | 2009-12-10 | 2015-07-01 | The Procter and Gamble Company | Automatic dishwashing product and use thereof |
| DE102012014268B4 (en) * | 2012-07-19 | 2014-02-20 | Brauns-Heitmann Gmbh & Co. Kg | Device for cleaning and / or descaling for use in dishwashers or washing machines |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2259830B2 (en) * | 1972-12-07 | 1981-01-29 | Hoechst Ag, 6000 Frankfurt | Process for machine washing of dishes, cutlery or glasses |
| DE3002789A1 (en) * | 1980-01-26 | 1981-07-30 | Henkel KGaA, 4000 Düsseldorf | LIQUID CLEANING AND CARE PRODUCT |
| EP0256148A1 (en) * | 1986-08-12 | 1988-02-24 | Joh. A. Benckiser GmbH | Liquid, granulated or powdery detergent, in particular for dish-washing machines |
| EP0612843A1 (en) * | 1993-02-22 | 1994-08-31 | Unilever N.V. | Granular acidic cleaners |
-
2000
- 2000-04-14 EP EP00303177A patent/EP1061123B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1061123A1 (en) | 2000-12-20 |
| EP1061123B2 (en) | 2007-02-14 |
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