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WO2024193937A1 - Produit de nettoyage de filtre de lave-vaisselle - Google Patents

Produit de nettoyage de filtre de lave-vaisselle Download PDF

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Publication number
WO2024193937A1
WO2024193937A1 PCT/EP2024/054498 EP2024054498W WO2024193937A1 WO 2024193937 A1 WO2024193937 A1 WO 2024193937A1 EP 2024054498 W EP2024054498 W EP 2024054498W WO 2024193937 A1 WO2024193937 A1 WO 2024193937A1
Authority
WO
WIPO (PCT)
Prior art keywords
solid body
surfactant
foam
water
filter cleaner
Prior art date
Application number
PCT/EP2024/054498
Other languages
English (en)
Inventor
Stephen Norman Batchelor
Graham Leslie CORLETT
Ramitha Kalathil
Peter William Wills
Marc Philip Woolfall
Original Assignee
Unilever Ip Holdings B.V.
Unilever Global Ip Limited
Conopco, Inc., D/B/A Unilever
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Unilever Ip Holdings B.V., Unilever Global Ip Limited, Conopco, Inc., D/B/A Unilever filed Critical Unilever Ip Holdings B.V.
Publication of WO2024193937A1 publication Critical patent/WO2024193937A1/fr

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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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0047—Detergents in the form of bars or tablets
    • C11D17/0065—Solid detergents containing builders
    • C11D17/0073—Tablets
    • 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
    • C11D1/83—Mixtures of non-ionic with anionic compounds
    • 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
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0052—Gas evolving or heat producing compositions
    • 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
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0094—High foaming compositions
    • 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 field of the invention relates to a solid body for cleaning/care of a machine dishwash filter; a method of in-situ treatment of a dishwasher filter and to the use of foam for in-situ treatment of a machine dishwash filter.
  • Machine dishwashers generally work by filling a bottom-basin with water, heating it to an appropriate temperature and mixing it with any added detergent to form a wash-liquor.
  • the wash-liquor formed is circulated and sprayed onto the dishes using rotating spray-arms.
  • the dirty water is drained.
  • the main wash phase is followed by a rinse phase.
  • the rinse phase is a repeat of the main wash phase but now using clean water to which rinse aid may be added.
  • the water is again drained, and the dishes are dried (drying-step, -phase).
  • the drying phase may involve active circulation of hot air.
  • the drain of a machine dishwasher is equipped with a drain-filter.
  • the filter plays an important role in preventing particles (food-soils or otherwise) washed from the dishware, to be redeposited onto the dishware during operation. It may also prevent clogging the liquids circulation system and the spray-arm dispensers.
  • Many modern dishwash machines have a manual-clean filter. Such filters need to be taken out on a regular basis and cleaned. Regular cleaning of the filter is important to maintain adequate water-flow through the filter-mesh. If this is not done regularly, the filter may suffer from a reduced water-flow.
  • One prevalent problem occurring on filter-meshes is the formation of biofilm. Besides reducing water-flow, biofilm on the filter can also cause odor problems. Manual cleaning of filters is disagreeable to most people.
  • filters need to be removed from the dishwasher, which are often in a hard-to- reach place, while the filter themselves are typically slimy and malodorous. Removal of the biofilm then typically involves manual often scrubbing the filter by hand. Some filters may also be hard to remove from the machine to begin with. It is desired to have a machine dishwash filter cleaner composition which can clean the filter in- situ, meaning that the filter does not have to be removed from the machine dishwasher to be cleaned, but that it can be cleaned while remaining in the machine dishwasher.
  • US2003/0032568A1 discloses compositions for cleaning the interior of automatic dishwashers. More specifically the invention relates to acidic cleaning compositions containing enzymes to remove limescale, food and detergent residues. It provides machine cleaner in tablet form having improved cleaning performance and mentions specifically cleaning of dishwash machine filters.
  • an in-situ dishwash filter cleaner composition advantageously fulfills several criteria to effectively clean the filter-mesh. Firstly, it must be able to contact as much of the filtermesh surface area as possible to enable adequate cleaning of the entire mesh-surface with reduced manual intervention. Secondly it may not subsequently interfere with the normal operation of the dishwasher. In particular, high amounts of persistent foam can disrupt the flow of wash-liquor from the basin through the spray-arms in any subsequent wash-cycle. Thirdly, such a dishwash filter cleaner must be easy to dose since filters are often in a difficult to access place in the interior bottom-panel of the dishwasher. This also makes it difficult to assess visually how much product is added. Fourthly, the dishwash filter cleaning ideally reduces/controls (re-)occurrence of biofilm. Finally, the process of in-situ machine dishwash filter cleaning should facilitate visual indication that the composition is active (again, the hard-to- reach place also typically prevents easy visual inspection of the filter cavity itself).
  • the object of the present invention is to provide a machine dishwash filter cleaner/care composition which can be easily dosed, works- in-situ to ensure contact of a large part of the filter-mesh, has a biofilm-control activity and provides in-situ visual indication that the composition is actively engaging with the filter(-mesh).
  • a machine dishwash filter cleaner solid body which comprises:
  • the surfactant comprises a ionic surfactant and a nonionic surfactant, wherein the weight ratio of ionic surfactant: nonionic surfactant is from 0.5:1 to 18:1 ; and • from 0.0005 to 10 wt. % of biofilm-control agent; and wherein a 1 wt. % solution of the composition in water provides a pH of from 2.0 to 8.0 when measured at 25 degrees Celsius and in otherwise standard conditions; and wherein the solid body has a weight of from 5 to 100 grams.
  • the solid body of the invention allows easy dosing into the in-situ filter cavity of the dishwasher, by simply dropping in into the filter opening.
  • the solid body is activated by water, which can be water remaining in the sump of the dishwasher or, if not enough, by adding additional water (or a suitable aqueous solution) in the filter opening on top to activate.
  • the solid body forms foam by the combined action of the water-activated effervescing system and the surfactant system.
  • the foam was found to be able to intimately contact the filter-mesh, including to penetrate the mesh spaces and thereby effectively deposit the surfactant and the biofilm-control agent onto even hard-to-reach mesh-spaces.
  • the foam can be visually observed meaning that the user has feedback that the cleaning product is activated.
  • the benefit of using a combination of the foaming ionic surfactant and nonionic surfactant is that the combination of these surfactants was found to be able to modulate the appearance of the foam and to stabilize the foam for an extended period of time.
  • use of non-ionic surfactant provided a foam with smaller average bubble-size compared to using ionic surfactant alone. This not only provides an important visual cue that the machine dishwash cleaner is activated but also is considered to improve contact of the foam with the inter-mesh spaces of the filter.
  • the foam with smaller average bubble size also provides a creamy appearance to the foam which is more visually appealing.
  • the foaming system in general provides a quick foam volume formation which also endures for an extended period of time. This too is important as it increases the contact time of the biofilm control agent with the filter mesh.
  • the solid body has a preferred hardness of from 10 to 250N, more preferably of from 25 to 180N, even more preferably of from 35 to 160N, still even more preferably of from 40 to 150N and still even more preferably of from 45 to 120N, as measured based on a cuboid shape with dimensions 31 mm x 22 mm x 9 mm, as based on the method as set out in the examples.
  • the invention relates to a method for the in-situ cleaning of a machine dishwash filter which comprises the following steps: a) contacting the filter with a foam, generated by bringing the solid body of the invention into contact with water I aqueous solution; and b) Incubating the foam before any subsequent machine dishwash program is started.
  • the act of contacting and incubating the foam with the filter mesh inevitably already provides some cleaning action of the filter, by virtue of the presence of surfactant.
  • This can be further enhanced in case the solid provides an acidic pH profile at a 1 wt.% solution in water.
  • the foam however critically enables such intrinsic cleaning to affect a large surface area of the filter mesh and to prolong contact time with high concentrations of the ingredients comprised by the solid.
  • the invention relates to the use of foam comprising biofilm control-agent for the in-situ cleaning of a machine dishwash filter.
  • a foamgenerating solid-body with biofilm control-agent for the in-situ cleaning of a machine dishwash filter.
  • Weight percentage is based on the total weight of the machine dishwash filter-cleaner solid body unless otherwise indicated or as made clear from the context. It will be appreciated that the total weight amount of ingredients will not exceed 100 wt. %. Whenever an amount or concentration of a component is quantified herein, unless indicated otherwise, the quantified amount or quantified concentration relates to said component per se, even though it may be common practice to add such a component in the form of a solution or of a blend with one or more other ingredients. It is furthermore to be understood that the verb "to comprise” and its conjugations is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded.
  • indefinite article “a” or “an” does not exclude the possibility that more than one of the elements is present, unless the context clearly requires that there be one and only one of the elements.
  • the indefinite article “a” or “an” thus usually means “at least one”. Unless otherwise specified all measurements are taken at standard conditions. Whenever a parameter, such as a concentration or a ratio, is said to be less than a certain upper limit it should be understood that in the absence of a specified lower limit the lower limit for said parameter is 0.
  • the effervescing system of the solid body of the invention produces gas when the composition is brought into contact with water.
  • the gas may be of any suitable type, although preferred are carbon dioxide and/or nitrogen gas, of which carbon dioxide is the more preferred.
  • the effervescent system may be any suitable type, but in its preferred form is based on the chemical reaction of carbonate into carbon dioxide. This reaction can be triggered by the interaction of the carbonate with water and an acid.
  • the effervescent system comprises of a combination of a carbonate source and an acid.
  • the preferred source of effervescing base is alkali metal carbonate, which is also appreciated as it functions as builder and buffer.
  • the preferred amount of alkali carbonate in the solid body is from 15 to 75 wt.%, more preferably from 20 to 60 wt.% and even more preferably from 25 to 55 wt.%.
  • Such level of alkali carbonate provides a suitable amount of CC>2-releasing carbonate functionality as well as good Ca 2+ and Mg 2+ ion scavenging for most types of water hardness levels, as well as other builder effects, such as providing good buffering capacity. In this sense the use of sodium carbonate may facilitate the foam-modulation activity of the surfactants.
  • the preferred alkali carbonates are sodium- and/or potassium carbonate of which sodium carbonate is particularly preferred.
  • the alkali carbonate present in the composition of the invention is preferably present as such or as part of a more complex ingredient, for example as sodium carbonate present in sodium percarbonate.
  • Advantageously the alkali carbonate is present as such.
  • Advantageous examples of alkali carbonate are Na carbonate and/or Na bicarbonate.
  • the acid of the effervescing system may be any suitable type and may be an organic acid, an inorganic acid or a combination thereof.
  • the acid preferably has (at least one) suitably low pKa.
  • the pKa can refer to any suitable one of these.
  • citric acid has three carboxylic acid groups and is characterized by pKa1 of 3.13, pKa2 of 4.76 and a pKa3 of 6.4.
  • the pKa value is defined as log ([HA] I ([A'][H + ]) and is typically determined in water at 25 degrees Celsius in otherwise standard conditions.
  • Typical pKa values of some common acids can be found in the table below:
  • the acid preferably has at least one pKa of from 4.0 to -6.0, more preferably of from 4.0 to -3.0 even more preferably of from 3.2 to -2.0, still even more preferably of from 1.5 to -1.0 and still even more preferably of from 1.2 to 0.
  • the water-activated effervescing system comprises a molar excess of acid versus base in order to generate foam in a sufficient amount and in a sufficiently short amount of time.
  • the molar ratio of acid/base is therefore above 1.1 , preferably is at least 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, 2.4, 2.6, 2.8, 3.0, where higher molar ratios are the more preferred.
  • the molar ratio of acid/base is at most 10.0, more preferably is at most 8.0, even more preferably is at most 6.0, still even more preferably is at most 5.0, and still even more preferably is at most 4.0.
  • a ratio of from 2.0 to 5.0 is more preferred than a ratio of from 1.8 to 10.0.
  • the molecular weight of the acid is based on the fully protonated form, and the molecular weight of the base is based on the sodium salt form.
  • the molecular weight of sodium carbonate is 106 g/mol and the molecular weight of sulfamic acid is 97 g/mol.
  • the solid body of the invention preferably comprises of from 25 to 85 wt.% of an acid with at least one pKa of at most 4, more preferably of from 35 to 80 wt.%, even more preferably of from 45 to 75 wt. % and even more preferably of from 50 to 70 wt. %.
  • Preferred acids for use in the invention include acetic acid, oxalic acid, tartaric acid, maleic acid, fumaric acid, ascorbic acid, benzoic acid, lactic acid, lactic acid, citric acid, sulfamic acid, phosphorous acid, sulfuric acid, hydrochloric acid and combinations thereof.
  • lactic acid, citric acid and sulfamic acid are the more preferred and especially advantageous is sulfamic acid.
  • the acid, or the used combination thereof is a solid at room temperature for ease of manufacture.
  • solid acids are more preferred are oxalic acid, tartaric acid, citric acid, maleic acid, fumaric acid, ascorbic acid, benzoic acid, lactic acid, and sulfamic acid are solids at room temperatures and at otherwise standard conditions.
  • a highly preferred water-activated effervescent system comprises alkali carbonate and sulfamic acid, which balances performance, safety and reactivity of chemicals.
  • the solid body of the invention preferably comprises as total amount of water-activated effervescing system of from 65 to 99 wt.%, more preferably of from 70 to 98 wt.% and even more preferably of from 75 to 97 wt.%
  • the composition of the invention advantageously provides a pH of a solution of 1 wt.% of the solid body composition in water as measured at 25 degrees Celsius and in otherwise standard conditions of from 2.5 to 7.5, more preferably of from 3.0 to 6.5 and even more preferably of from 3.5 to 6.0 and still even more preferably of from 4.0 to 5.5.
  • surfactants are described in "Surface Active Agents” Vol. 1 , by Schwartz & Perry, Interscience 1949, Vol. 2 by Schwartz, Perry & Berch, Interscience 1958, in the current edition of "McCutcheon's Emulsifiers and Detergents” published by Manufacturing Confectioners Company or in “Tenside Taschenbuch", H. Stache, 2nd Edn., Carl Hauser Verlag, 1981.
  • the surfactants used are saturated or monounsaturated.
  • the machine dishwash filter cleaner composition of the invention comprises a mixture of one or more ionic surfactants and one or more non-ionic surfactant.
  • the mixture comprises one ionic surfactant and/or one non-ionic surfactant.
  • ionic surfactants preferably anionic, zwitterionic or amphoteric surfactant, as used in laundry detergents and hand-dishwash applications are suitable. These tend to be foaming and even high foaming in agitated water-systems. These may be used as ionic surfactant in the present invention. It was found that well-performing ionic surfactants are predominately composed of C10-C14 saturated alkyl chains, more preferably these contain at least 70mol% C12 saturated alkyl chains. Such chains may be obtained from the C12-14 fraction of palm kernel oil, or from petrochemical sources.
  • the ionic surfactant preferably comprises, more preferably essentially is anionic surfactant.
  • Anionic surfactants are discussed in The Anionic Surfactants: Organic Chemistry edited by Helmut W. Stache (Marcel Dekker 1995), Surfactant Science Series published by CRC press.
  • Suitable anionic surfactants are alkyl sulfate, alkyl ether carboxylates, alkyl sulfonate, alkyl sulfosuccinates and/or alkyl sulfoacetate, or mixtures thereof.
  • alkyl sulfate and/or alkyl ethoxy sulfates are preferred.
  • Suitable sulphate surfactants may include water-soluble salts or acids of C10-C14 alkyl or hydroxyalkyl, sulphate and/or ether sulfate.
  • Suitable counterions include hydrogen, alkali metal cation or ammonium or substituted ammonium. Where the hydrocarbyl chain is branched, it comprises C1-4 alkyl branching units, preferably methyl branched.
  • the average percentage branching of the sulphate surfactant is from about 10% to about 100%, in another embodiment 30% to about 90%, in another embodiment from about 35% to about 80%, and in another embodiment from about 40% to about 60% of the total hydrocarbyl chains.
  • Other suitable anionic surfactants are alkyl, dialkyl, sulfosuccinates and/or sulfoacetate.
  • the dialkyl sulfosuccinates may be a C6-15 linear or branched dialkyl sulfosuccinate.
  • the alkyl moieties may be asymmetrical (i.e. , different alkyl moieties) or symmetrical (i.e., the same alkyl moieties).
  • composition of the present invention may comprise a sulphonate surfactant.
  • a sulphonate surfactant include water-soluble salts or acids of C10-C14 alkyl or hydroxyalkyl, sulphonates; C11-C15 alkyl benzene sulphonates (LAS), modified alkylbenzene sulphonate (MLAS); methyl ester sulphonate (MES); and alpha-olefin sulphonate (AOS).
  • Rhamnolipids are another class of suitable anionic surfactants.
  • the ionic surfactant of the solid machine dishwash filter cleaner composition of the invention preferably comprises ionic surfactant, more preferably anionic surfactant, even more preferably anionic sulphonate or sulfate surfactant, still even more preferably alkyl benzene sulphonate, modified alkylbenzene sulphonate, methyl ester sulphonate, alkyl ether sulphate, alpha-olefin sulphonate or a combination thereof; even more preferably comprises alkyl sulphate, alkyl ether sulphate or a combination thereof; and still even more preferably comprises an alkyl ether sulphate where the alkyl groups are selected from linear or branched C11 , C12, C13, C14, C15, most preferably linear C12-14.
  • These surfactants tend to be high-foaming surfactants.
  • Sodium laureth sulfate is an alkyl ether sulphate and is used in the examples. This particular anionic surfactant is still even more preferred.
  • Suitable amphoteric and zwitterionic surfactants are amine oxides and betaines.
  • the surfactant is an amine oxide, especially coco dimethyl amine oxide or coco amido propyl dimethyl amine oxide.
  • Amine oxides may have a linear or mid-branched alkyl moiety.
  • Typical linear amine oxides include water-soluble amine oxides containing one R1 Cs-14 alkyl moiety and 2 R2 and R3 moieties selected from the group comprising C1.3 alkyl groups and C1.3 hydroxyalkyl groups.
  • Amine oxides are characterized by the formula R1- N(R2)(R3) O wherein R1 is a Cs-14 alkyl and R2 and R3 are selected from the group consisting of methyl, ethyl, propyl, isopropyl, 2-hydroxethyl, 2-hydroxypropyl, 3-hydroxypropyl, and mixtures thereof.
  • the linear amine oxide surfactants in particular may include linear C10-C18 alkyl dimethyl amine oxides and linear C8-C12 alkoxy ethyl dihydroxy ethyl amine oxides.
  • Amine oxides include linear Cw, linear C10-C12, and linear C12-C14 alkyl dimethyl amine oxides.
  • midbranched means that the amine oxide has one alkyl moiety having n1 carbon atoms with one alkyl branch on the alkyl moiety having n2 carbon atoms.
  • the alkyl branch is located on the a carbon from the nitrogen on the alkyl moiety.
  • This type of branching for the amine oxide is also known in the art as an internal amine oxide.
  • the total sum of n1 and n2 is from 10 to 24 carbon atoms, from 12 to 20, and from 10 to 16.
  • the number of carbon atoms for the one alkyl moiety (n1) should be approximately the same number of carbon atoms as the one alkyl branch (n2) such that the one alkyl moiety and the one alkyl branch are symmetric.
  • Suitable surfactants include betaines such alkyl betaines, alkylamidobetaine, amidazoliniumbetaine, sulfobetaine (INCI Sultaines) as well as a phosphobetaine having the formula: R1-[CO-X(CH2)n]x-N+(R2)(R3)-(CH2)m-[CH(OH)-CH2] y-Y- (I) wherein R1 is a saturated or unsaturated Ce-is alkyl residue, in one embodiment Cs-14 alkyl residue, in particular a saturated C10-15 alkyl residue, for example a saturated C12-14 alkyl residue; X is NH, NR4 with C1.4 Alkyl residue R4, O or S; n a number from 1 to 10, in one embodiment 2 to 5, in particular 3; X is 0 or 1 , in one embodiment X is 1 ; R2, R3 are independently a C1-4 alkyl residue, potentially hydroxy substituted such as a hydroxyethyl, in one
  • betaines and sulfobetaine are the following [designated in accordance with INCI]: Almondamidopropyl of betaines, Apricotam idopropyl betaines, Avocadamidopropyl of betaines, Babassuamidopropyl of betaines, Behenam idopropyl betaines, Behenyl of betaines, betaines, Canolam idopropyl betaines, Capryl/Capram idopropyl betaines, Carnitine, Cetyl of betaines, Cocamidoethyl of betaines, Cocam idopropyl betaines, Cocam idopropyl Hydroxysultaine, Coco betaines, Coco Hydroxysultaine, Coco idopropyl betaines, Coco Sultaine, Decyl of betaines, Dimethicone Propyl of PG-betaines, Erucam ido
  • Suitable ionic surfactants can be chosen from amphoteric and zwitterionic surfactants as described in EP2746376B1 paragraph [0034] - [0037], which are hereby incorporated by reference.
  • Especially contemplated are amino oxides as described in W095/05440 on page 6, lines 8 - page 9, line 2). Such amine oxides are incorporated herein by reference.
  • Non-ionic surfactants are discussed in Non-ionic Surfactants: Organic Chemistry edited by Nico M. van Os (Marcel Dekker 1998), Surfactant Science Series published by CRC press.
  • Preferred non-ionic surfactants are alkoxylate, preferably ethoxylated.
  • Preferred non-ionic surfactant are alcohol ethoxylates and methyl ester ethoxylates, with C12-C18 alkyl chains.
  • Ethoxy units may be partially replaced by propoxy units in the non-ionic surfactants.
  • nonionic surfactants include, alkoxylated fatty acid alkyl esters, alkylpolyglycosides, alkoxylated amines, ethoxylated glycerol esters, fatty acid monoethanolamides, fatty acid diethanolamides, ethoxylated fatty acid monoethanolamides, propoxylated fatty acid monoethanolamides, polyhydroxyalkyl fatty acid amides, or N-acyl N- alkyl derivatives of glucosamine, polysorbates (TWEENS).
  • Alcohol ethoxylate are of the formula:
  • Ri is a linear or branched C12-C18 alkyl chain, preferably selected from lauryl, myristyl, palmyl, stearyl and oleyl.
  • n is from 9 to 40, more preferably 10 to 35, most preferably 20 to 30.
  • Preferred examples are C11-C14 or C12-14 alcohol ethoxylates with 10EO, 11 EO, 12EO, 13EO, 14EO or 15EO.
  • Methyl ester ethoxylate surfactant are of the form:
  • R 2 COO is a C12-C18 fatty acid moiety, preferably oleic, stearic, palmitic.
  • m is from 9 to 40, more preferably 10 to 35, most preferably 15 to 25. it is preferred that at least 40wt% of the total MEE in the composition is oleic.
  • Methyl Ester Ethoxylates are described in chapter 8 of Biobased Surfactants (Second Edition) Synthesis, Properties, and Applications Pages 287-301 (AOCS press 2019) by G.A. Smith; J. Am. Oil. Chem.Soc. vol 74 (1997) page 847-859 by Cox M.E. and Weerasooriva II; Tenside Surf.Det. vol 28 (2001) page by 72-80 by Hreczuch et al; by C. Kolano. Household and Personal Care Today (2012) page 52-55; J.Am.Oil. Chem.Soc. vol 72 (1995) page 781-784 by A. Hama et al. MEE may be produced the reaction of methyl ester with ethylene oxide, using catalysts based on calcium or magnesium. The catalyst may be removed or left in the MEE.
  • Preferred non-ionic surfactants are low foaming non-ionic surfactants which are commonly used in machine dishwash detergents and are otherwise known in the art. Such non-ionic surfactants are especially low-foaming, although non-ionic surfactants in general tend to be low-foaming.
  • the (low) foaming characteristics of non-ionic surfactants can be tuned by modifying the degree of alkoxylation or by modifying the alkyl chain.
  • Preferred non-ionic surfactants which may be used include preferably the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • Nonionic surfactants from the group of alkoxylated alcohols are likewise particularly preferentially used.
  • Preferably used nonionic surfactants originate from the groups comprising alkoxylated nonionic surfactants, in particular ethoxylated primary alcohols and mixtures of these surfactants with structurally complex surfactants such as polyoxypropylene/ polyoxyethylene/ polyoxypropylene (PO/EO/PO).
  • Such (PO/EO/PO) nonionic surfactants are furthermore distinguished by good foam control.
  • nonionic surfactants are: wherein n is from 0 to 5 and m from 10 to 50, more preferably wherein n is from 0 to 3 and m is from 15 to 40, and even more preferably wherein n is 0 and m is from 18 to 25.
  • Surfactants according to this formula were particularly useful in reducing spotting of dishware treated in a machine dish washer.
  • Preferably at least 50 wt. % of the nonionic surfactant comprised by the detergent composition of the invention is nonionic surfactant according to this formula.
  • Such nonionic surfactants are commercially available, for example under the tradename Dehypon WET (Supplier: BASF) and Genapol EC50 (Supplier Clariant).
  • the ‘Test for determining foaming of surfactants’ as described in the Examples may be used to test foaming capacity of a surfactant in a solid relevant to the invention.
  • an ionic surfactant preferably provides a foam volume of at least 150 ml, and in increasing order of preference at least 200 ml, 250 ml, 300 ml, 350 ml, 400 ml, 450 ml, 500 ml, 550 ml, 600 ml, and even more preferably from 650 to 1500 ml after 15 min, and advantageously after 30 min.
  • a nonionic surfactant preferably provides a foam volume of at most at most 100 ml and, in order of increasing preference, of at most 90 ml, 80 ml, 70 ml, 60ml, 50 ml 40 ml after 30 min, and advantageously after 15 min.
  • composition of the invention preferably comprises a total amount of surfactant of from 0.2 to 6.0 wt. %, more preferably from 0.5 to 5.0 wt. % and even more preferably from 1.0 to 4.0 wt. %.
  • the total amount of non-ionic surfactant is from 0.5 to 6 wt.%, more preferably from 0.7 to 4 wt. %, even more preferably from 0.8 to 2.0 wt.% and still even more preferably from 0.9 to 1.2 wt.%
  • the weight ratio of ionic surfactant: nonionic surfactant preferably is from 0.6: 1.0 to 15:1.0, more preferably is from 0.8: 1.0 to 10:1.0, even more preferably is from 1.0: 1.0 to 8:1.0, still even more preferably is from 1.2: 1.0 to 4:1.0 and still even more preferably is from 1.3: 1.0 to 3:1.0.
  • the composition of the invention advantageously comprises at least an anionic surfactant and a non-ionic surfactant.
  • a suitable biofilm control agent reduces the proliferation of biofilm on the machine dishwash filter surface and/or removes part of the biofilm present on the filter.
  • Biofilms are well-described. One description is that these are a syntrophic consortium of microorganisms which can stick to surfaces and which produce, often a slimy, extracellular matrix of polymeric substances (EPSs).
  • EPSs polymeric substances
  • the EPSs are produced by the cells within the biofilm and include typically a polymeric conglomeration of extracellular polysaccharides, proteins, lipids and DNA.
  • Microorganisms living in a biofilm usually have significantly different properties from free-floating bacteria of the same species, as the dense and protected environment of the film allows them to cooperate and interact in various ways.
  • biofilm control agents work by disrupting the EPS matrix, which can be accomplished by including enzymes which breakdown one or more or the polymeric substances. This may be accomplished (in whole or in part) by use of enzymes as described in S-C Jee et.al. ‘Efficient bio films eradication by enzymatic-cocktail of pancreatic protease Type-1 and bacterial alphaamylase, published 17 December 2020, Polymers 2020, 12, 3032. Suitable enzymes which can aid to remove biofilm include proteases, lipases, DNAses, endolysins and/or amylases. In addition or alternatively they may reduce the spreading I re-occurrence of biofilm.
  • the machine dishwash filter cleaner comprises one or more proteases, amylases, lipases, DNAses, endolysins, in a combined amount of from 0.0005 to 5 wt.%, based on active enzyme levels, more preferably of from 0.001 to 3 wt.%, even more preferably of from 0.01 to 2.0 wt.%. If more than one enzyme is present each if preferably present in an amount of from 0.0005 to 0.5 wt.%. These preferred levels of enzymes are directed to actively added enzymes, not for examples as part of the enzymes which include for example those produced by any used bio-control microorganisms.
  • Any enzyme present in the composition may be stabilized using conventional stabilizing agents, e.g., a polyol such as propylene glycol or glycerol, a sugar or sugar alcohol, lactic acid, boric acid, or a boric acid derivative, e.g., an aromatic borate ester, or a phenyl boronic acid derivative such as 4-formyl phenyl boronic acid, and the composition may be formulated as described in e.g. WO 92/19709 and WO 92/19708.
  • a polyol such as propylene glycol or glycerol
  • a sugar or sugar alcohol lactic acid, boric acid, or a boric acid derivative, e.g., an aromatic borate ester, or a phenyl boronic acid derivative such as 4-formyl phenyl boronic acid
  • the composition may be formulated as described in e.g. WO 92/19709 and WO 92/19708.
  • Suitable amylases may be an alpha-amylase or a glucoamylase and may be of bacterial or fungal origin. Chemically modified or protein engineered mutants are included. Preferred are alpha-amylases.
  • Amylases include, for example, alpha-amylases obtained from Bacillus, e.g., a special strain of Bacillus licheniformis, described in more detail in GB 1 ,296,839 or the Bacillus sp. strains disclosed in WO 95/026397 or WO 00/060060.
  • amylases are also sold under the tradenames DuramylTM, TermamylTM, FungamylTM, StainzymeTM, Stainzyme PlusTM, NatalaseTM, Amplify Prime® and BANTM (from Novozymes A/S), and RapidaseTM, PurastarTM/EffectenzTM, PoweraseTM, Preferenz S1000TM Preferenz S1 10TM, Preferenz S100TM and Preferenz S3300 (from Genencor International Inc./DuPont).
  • the Amplify Prime® amylase and/or Preferenz S3300 is most advantageous of the commercial amylase enzymes as being highly activate and cost-effective.
  • the solid of the invention comprises protease.
  • protease hydrolyse bonds within peptides and proteins.
  • proteases hydrolyze bonds within peptides and proteins, in the laundry context this leads to enhanced control of protein or peptide containing stains.
  • suitable proteases families include aspartic proteases; cysteine proteases; glutamic proteases; asparagine peptide lyase; serine proteases and threonine proteases. Such protease families are described in the MEROPS peptidase database (htp://merops.sanger.ac.uk/). Serine proteases are preferred. Subtilase type serine proteases are more preferred.
  • subtilis refers to a sub-group of serine protease according to Siezen et al., Protein Engng. 4 (1991) 719-737 and Siezen et al. Protein Science 6 (1997) 501 - 523.
  • Serine proteases are a subgroup of proteases characterized by having a serine in the active site, which forms a covalent adduct with the substrate.
  • the subtilases may be divided into 6 sub-divisions, i.e. the Subtilisin family, the Thermitase family, the Proteinase K family, the Lantibiotic peptidase family, the Kexin family and the Pyrolysin family. Most preferably the protease is a subtilisin (EC 3.4.21.62).
  • subtilases are those derived from Bacillus such as Bacillus lentus, B. alkalophilus, B. subtilis, B. amyloliquefaciens, Bacillus pumilus and Bacillus gibsonii described in;
  • subtilisin lentus subtilisin Novo, subtilisin Carlsberg
  • Bacillus licheniformis subtilisin BPN'
  • subtilisin 309 subtilisin 147 and subtilisin 168 described in WO 89/06279
  • protease PD138 described in (WO 93/18140).
  • the subsilisin is derived from Bacillus, preferably Bacillus lentus, B. alkalophilus, B. subtilis, B.
  • subtilisin is derived from Bacillus gibsonii or Bacillus Lentus.
  • Suitable commercially available protease enzymes include those sold under the trade names names Alcalase®, Blaze®; DuralaseTM, DurazymTM, Relase®, Relase® Ultra, Savinase®, Savinase® Ultra, Primase®, Polarzyme®, Kannase®, Liquanase®, Liquanase® Ultra, Ovozyme®, Coronase®, Coronase® Ultra, Neutrase®, Everlase® and Esperase® all could be sold as Ultra® or Evity® (Novozymes A/S).
  • Maxatase® Maxacai®, Maxapem®, Purafect®, Purafect Prime®, PreferenzTM, Purafect MA®, Purafect Ox®, Purafect OxP®, Puramax®, Properase®, EffectenzTM, FN2®, FN3®, FN4®, Excellase®, Opticlean® and Optimase® (from Genencor International Inc./ Danisco/DuPont), AxapemTM(Gist-Brocases N.V.).
  • the solid of the invention may use cutinase, classified in EC 3.1.1.74.
  • the cutinase used according to the invention may be of any origin.
  • Preferably cutinases are of microbial origin, in particular of bacterial, of fungal or of yeast origin.
  • DNAse deoxyribonuclease
  • DNAse means a polypeptide with DNase activity that catalyzes the hydrolytic cleavage of phosphodiester linkages in the DNA backbone, thus degrading DNA.
  • Suitable DNAse enzymes are described in US10479981 B1 , W02013/043860A1 and US2020/0277552A1.
  • Suitbale DNAse enzymes are commercially available, such as TurboNuclease (ex. Accelagen), the 5'-Phosphodiesterase preparation produced by submerged fermentation of Penicillum citrinum (ex. Sunsonzymes), NuCLEANase (ex. C-LEcta).
  • Lipases are enzymes that catalyse the hydrolysis of fats.
  • the lipase enzyme to be used according to the invention is of fungal or bacterial origin and suitable for use in detergent formulations to enhance the control of fat or oil-containing stains typically resulting from frying fats and oils, salad dressing, human sebum and cosmetics such as lipstick.
  • a particularly preferred lipolytic enzyme for use herein is "Lipolase 100 T”® marketed by Novo Industri A/S, DK-2880 Bagsvaerd, Denmark. The activity of this fungal-derived enzyme is about 100,000 units of lipase per gram of enzyme.
  • Another preferred lipase is Lipex Evity from Novozymes.
  • halogenated furanone compounds Quercetin, tannic acid, D-tyrosine, ethyl-pyruvate, polymyxin B, Gramacidin S, lantibiotics, sophorolipids, polyhexa, ethylethylene, biguanide, chlorohexidine, pyrrocoricin, bacteriocins, mannosides, desformylflustra bromine, analogs of ring-fused 2-pyridones.
  • the total amount of biofilm-control agent preferably is from 0.001 to 6 wt.%, more preferably from 0.005 to 4 wt.%, even more preferably from 0.01 to 3.5 wt.%, still even more preferably from 0.05 to 3.0 wt.% and still even more preferably from 0.1 to 2.5 wt.%
  • the solid of the invention does not include defoamer and/or suds-suppressor.
  • Suds suppressors can be an alkyl phosphate ester suds suppressor, a silicone suds suppressor, or combinations thereof. Suds suppressor technology and other defoaming agents useful herein are documented in Defoaming, Theory and Industrial Applications," Ed., P.R. Garrett, Marcel Dekker, N.Y., 1973, incorporated herein by reference.
  • Further builder materials may be selected from 1) calcium sequestrant materials, 2) precipitating materials, 3) calcium ion-exchange materials and 4) mixtures thereof.
  • Examples of calcium ion-exchange builder materials include the various types of waterinsoluble crystalline or amorphous aluminosilicates, of which zeolites are known representatives, e.g. zeolite A, zeolite B (also known as zeolite P), zeolite C, zeolite X, zeolite Y and also the zeolite P-type as described in EP-A-0,384,070.
  • the further builder may be crystalline aluminosilicate, preferably an alkali metal aluminosilicate, more preferably a sodium aluminosilicate. This is typically present at a level of less than 15 wt. %.
  • Aluminosilicates are materials having the general formula: 0.8-1.5 M2O. AI2O3. 0.8-6 SiC>2, where M is a monovalent cation, preferably sodium. These materials contain some bound water and are required to have a calcium ion exchange capacity of at least 50 mg CaO/g.
  • the preferred sodium aluminosilicates contain 1.5-3.5 SiC>2 units in the formula above. They can be prepared readily by reaction between sodium silicate and sodium aluminate, as amply described in the literature.
  • the ratio of surfactants to alumuminosilicate (where present) is preferably greater than 5:2, more preferably greater than 3:1 .
  • Aminopolycarboxylates are well known in the detergent industry and sometimes referred to as aminopolycarboxylic acids chelants. They are generally appreciated as being strong builders. Suitable aminopolycarboxylic acids include glutamic acid N,N-diacetic acid (GLDA), methylglycinediacetic acid (MGDA), ethylenediaminedisuccinic acid (EDDS), iminodisuccinic acid (IDS), iminodimalic acid (IDM), ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA), iminodiacetic acid (IDA), diethylenetriaminepentaacetic acid (DTPA), hydroxyethyliminodiacetic acid (HEIDA) aspartic acid diethoxysuccinic acid (AES) aspartic acid- N,N-diacetic acid (ASDA) , hydroxyethylene-diaminetetraacetic acid (HEDTA), hydroxyethylethylene
  • Preferred aminopolycarboxylates are GLDA, MGDA, EDDS, IDS, IDM or a mixture thereof, more preferred are GLDA, MGDA, EDDS or a mixture thereof and even more preferred are GLDA and MGDA or a mixture thereof.
  • GLDA is especially preferred as it can be made from bio-based materials (e.g. monosodium glutamate, which itself can be made as by-product from corn fermentation).
  • GLDA itself is highly biodegradable.
  • MGDA is more preferred in view of it being somewhat less hygroscopic, which improves detergent stability during storage.
  • the solid body according to the invention may comprise from 0.5 to 40 wt. % free acid equivalent of aminopolycarboxylate.
  • a particularly preferred amount of free acid equivalent of aminopolycarboxylate is from 0.5 to 20 wt. %, more preferably from 1.0 to 15 wt. %, even more preferably from 2.0 to 10 wt. % and still even more preferably from 3.0 to 8 wt.%.
  • Preferred salts are alkali-based salts and more preferred are sodium-based salts.
  • the solid body is phosphate-free, i.e., contains at most 1.0 wt. %, preferably at most 0.8 wt.%, more preferably at most 0.5 wt. %, even more preferably at most 0.2 wt.% of phosphate and still even more preferably contains essentially no phosphate.
  • the solid body is phosphonate-free i.e., contains at most 1.0 wt. % of phosphonate, preferably at most 0.8 wt. %, more preferably at most 0.5 wt. %, even more preferably at most 0.2 wt.
  • phosphonate % of phosphonate and still even more preferably contains essentially no phosphonate.
  • phosphonates and phosphates are 1-hydroxyethane-1 ,1-diphosphonic acid (HEDP), diethylenetriamine-penta (methylenephosphonic acid) (DTPMP), ethylenediaminetetra-methylenephosphonate (EDTMP), tripolyphosphate and pyrophosphate.
  • HEDP 1-hydroxyethane-1 ,1-diphosphonic acid
  • DTPMP diethylenetriamine-penta
  • ETMP ethylenediaminetetra-methylenephosphonate
  • tripolyphosphate pyrophosphate
  • the solid body may comprise a bleach system.
  • a bleach system comprises one or more of bleach, bleach activator and bleach catalyst. The presence of bleach may help in reducing the biofilm microbial population.
  • the solid body of the invention preferably comprises from 0.1 to 25 wt. % of bleach.
  • Inorganic and/or organic bleaches can be used.
  • Bleach may be selected from peroxides, organic peracids, salts of organic peracids and combinations thereof.
  • the bleach is selected from peroxides (including peroxide salts such as sodium percarbonate), organic peracids, salts of organic peracids and combinations thereof. More preferably, the bleach is a peroxide. Most preferably, the bleach is a percarbonate. Further preferred, the bleach is a coated percarbonate. More preferred amounts of bleach are from 1.0 to 25 wt.%, even more preferably at from 2.0 to 20 wt. % and still even more preferably from 5 to 15 wt.%.
  • the solid body of the invention preferably comprises one or more bleach activators such as peroxyacid bleach precursors.
  • Peroxyacid bleach precursors are well known in the art. As nonlimiting examples can be named N, N, N', N '-tetraacetyl ethylene diamine (TAED), sodium nonanoyloxybenzene sulphonate (SNOBS), sodium benzoyloxybenzene sul phonate (SBOBS) and the cationic peroxyacid precursor (SPCC) as described in US-A-4, 751 ,015.
  • a beneficial amount of bleach activator is from 0.1 to 10 wt.%, more preferably from 0.5 to 5 wt.% and even more preferably from 1.0 to 4 wt. %.
  • Bleach catalyst such as peroxyacid bleach precursors.
  • Bleach catalysts function by oxidizing typically via peroxide or a peracid to form a bleaching species. They require the presence of an oxidizable soil so that they can be reduced back to the starting bleach activator state.
  • a preferred bleach catalyst is a manganese complex of formula (A):
  • Such bleach catalysts are described in EP0458397A2.
  • the beneficial amount of bleach catalyst is from 0.0001 to 2.0 wt. %, more preferably from 0.001 to 1.5 wt.%, even more preferably from 0.01 to 1.0 wt. %.
  • the solid body of the invention preferably comprises one or more colorants, one or more perfumes and more advantageously a mixture of at least one colorant and at least one perfume.
  • Colorants are beneficially present in an amount of from 0.0001 to 8 wt. %, more preferably from 0.001 to 4 wt. % and even more preferably from 0.001 to 1.5 wt. %.
  • Perfume may be present in the range from 0.1 to 1 wt. %.
  • Many suitable examples of perfumes are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide, published by CFTA Publications and OPD 1993 Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co.
  • CTFA Cosmetic, Toiletry and Fragrance Association
  • top notes are defined by Poucher (Journal of the Society of Cosmetic Chemists 6(2):80 [1955]).
  • Preferred top-notes are selected from citrus oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3-hexanol.
  • the solid body of the invention comprises preferably at most 5, 4, 3, 2, 1 and 0 additional ingredients, where fewer additional ingredients are the more preferred.
  • the solid machine dishwash filter cleaner composition is in the form of a solid body.
  • Advantageously solid is as such a unit-dose which may be shaped in any suitable form.
  • preferred are shapes are those which can easily be inserted into the machine dishwash filter cavity. Preferred shapes are cuboid, cylindrical and spherical for ease of manufacturing.
  • the volume of the solid is preferably from 4 to 20 cm 3 , more preferably 6 to 15 cm 3 and even more preferably from 7 to 12 cm 3 .
  • the solid of the invention has a preferred weight of from 10 to 60 grams, more preferably from 15 to 40 grams and even more preferably from 16 to 25 grams.
  • the solid of the invention is preferably of suitable density to promote rapid interaction with water and foam generation.
  • the preferred density is from 0.5 to 5.0 grams/cm 3 , more preferably from 0.8 to 4.0 grams/cm 3 , even more preferably from 1.0 to 3.0 grams/cm 3 and still even more preferably from 1.5 to 2.5 grams/cm 3 .
  • Such densities for a solid body of the invention are considered to provide optimal foaming behavior.
  • the preferred compaction pressured used is from 0.1 to 20 kN/cm 2 , more preferably from 0.2 to 18 kN/cm 2 , even more preferably from 2 to 16 kN/cm 2 , still even more preferably from 4 to 14 kN/cm 2 and still even more preferably is from 5 to 12 kN/cm 2 .
  • the solid body of the invention is preferably not encapsulated by a water-soluble film.
  • the solid body may be water-soluble film wrapped although this may retard to onset of foam-formation, reduce foam height, duration and prevent uniformly exposing the filter mesh to the foam. This may also depend on the surface area of the solid body covered by the water-soluble film.
  • the benefit of having parts of its surface covered by a water-soluble film is to provide gripping means to reduce direct contact with skin and to improve storage stability.
  • the solid body is preferably not fully encapsulated by a water-soluble film. Although some parts may be film-wrapped to provide some gripping means.
  • the maximum area covered, based on total surface area is at most 95 %, more preferably at most 70 %, even more preferably at most 50 % and still even more preferably is at most 30 %. Still even more preferably the solid body does not comprise water-soluble film on its outer surface.
  • a compressed 18 grams granular tablet (cuboid) with size dimensions of 1.2 cm x 2.7 cm x 3.7 cm has a total surface area of about 35 cm 2 .
  • the total surface area of the powder is orders of magnitude greater (e.g. can be more than 1 m 2 / gram; or 10,000 cm 2 / gram).
  • the solid body of the invention also considering irregular shapes, has a preferred surface area of from 10 to 500 cm 2 , more preferably of from 15 to 300 cm 2 , even more preferably of from 20 to 150 cm 2 and even more preferably of from 25 to 100 cm 2 .
  • machine dishwash filter cleaner solid bodies according to the invention which when brought into contact with 100 ml, at otherwise standard conditions generate at total volume (foam + liquid) after 15 min (and more preferably after 30 min) of incubation of at least 300 ml, preferably of at least 350 ml, more preferably of at least 400 ml, even more preferably of at least 450 ml, still even more preferably of at least 500ml, still even more preferably of at least 550ml, still even more preferably of at least 600ml to 1500 and still even more preferably of from 650 to 1000ml.
  • a suitable foaming test is described in the Example 1.
  • the solid of the invention can be made using conventional techniques and manufacturing equipment in the field of (machine dishwash) detergent manufacturing. During manufacture it is desired that the ingredients are homogenously mixed, before being processed into a solid body.
  • a preferred method of production includes homogenous mixing the ingredients to form a mixed powder, followed by compacting the powder into a solid body.
  • advantageous compaction force is from 0.1 to 20 kN/cm 2 , more preferably from 0.2 to 18 kN/cm 2 , even more preferably from 2 to 16 kN/cm 2 , still even more preferably from 4 to 14 kN/cm 2 and still even more preferably is from 5 to 12 kN/cm 2 .
  • the invention relates to a method for the in-situ cleaning of a machine dishwash filter which comprises the following steps: a) contacting the filter with a foam, generated by bringing the solid body of the invention into contact with an aqueous solution, which may comprise only water; and b) Incubating the foam before any subsequent machine dishwash program is started.
  • step a) may be preceded by a step which removes any cap from the drain to access the machine dishwash filer cavity.
  • Step a) may also be fulfilled by pouring pre-generated foam into the filter cavity.
  • the solid body of the invention is inserted into the filter cavity and the foam is generated in-situ.
  • the solid machine dishwasher filter cleaner of the invention is preferably used in the method of in-situ cleaning of a machine dishwash filter.
  • step a) may be the result of adding the solid composition to the filter-cavity. There it may be activated by residual sump water and/or if needed further aqueous liquid is added on top of the solid in the cavity.
  • a preferred method to ensure consistent activity of the filter cleaner composition comprises the following steps: a) Placing (e.g. dropping) the machine dishwash filter cleaner solid body into the machine dishwash filter cleaner cavity; and b) Optionally, adding water/aqueous solution on-top of the solid; and c) Incubating the foam before any subsequent machine dishwash program is started.
  • the preferred amount of water added on-top of the solid is preferably from 50 to 500 ml, more preferably from 100 to 350 ml, even more preferably from 150 to 250 ml. These levels of water provide adequate foam formation and foam characteristics
  • the foam After contacting the filter mesh, with foam generated from the solid body of the invention, the foam is incubated on the mesh for a suitable time to allow the surfactant to act on the biofilm and for the micro-organisms to attach to the filter mesh. Longer incubation times before any subsequent machine dishwash program is started are preferred.
  • the incubation time is preferably at least 2 min, more preferably at least 5 min, even more preferably at least 10 min, still even more preferably at least 30 minutes and still even more preferably at least 60 min.
  • the compaction pressure used was 6.9 kN/cm 2 to form a tablet of shaped and sized like a regular machine dishwash tablet (-dimensions of 1.2 cm x 2.7 cm x 3.7).
  • Preferred foaming surfactant provides a foam-height in the above test of at least 100 ml after 15 min.
  • Preferred non-ionic surfactants provide a foam-height in said test below 100 ml.
  • sodium lauryl sulphate will provide a foam height of above 100ml in the above test after 15 min and 30 min.
  • LIALET 111-10 which is a C10 branched alcohol ethoxylate with an average of 10EO non-ionic surfactant (Supplier: SASOL), in the above test will provide a foam-height of below 100ml after 15 min and 30 min.
  • Example 1 Impact of surfactant system on foaming capacity.
  • Machine dishwash filter cleaner formulations were made as set out in the Table 1 below.
  • the foaming characteristic of the formulations were tested according to the following procedure: 1) Provide a laboratory volume measuring cylinder of 1000 ml with 100 ml demineralized water.
  • the cylinder used is a graduated cylinder, tall form, BLAUBRAND®, class A, Boro 3.3, DE-M, USP Boro 3.3. DIN EN ISO 4788. Calibrated to contain (TC, In). With spout and hexagonal glass base (Cat. No. 32862, Supplier: Brand).
  • the test is conducted in otherwise standard conditions.
  • Example 1 show that the presence of both an ionic surfactant and non-ionic surfactant is important to provide sufficient foaming after an extended period. It also shows the requirement of the machine dishwash filter cleaner to comprise the effervescing system and the surfactants in a (compressed) solid body.
  • Machine dishwash filter cleaner formulations were made as set out in the Table 3 below. Table 3: formulations tested.
  • Example 4 foaming characteristics of Examples 5 to 10 and Comparatives I to N The results of Example 2 show that an excess of acid versus sodium carbonate is required to provide adequate foaming.
  • Machine dishwash filter cleaner formulations were made as set out in the Table 5 below.
  • Example 9 Three types of 18g compressed solids were made with this formulation, which differed in the compaction force applied in the tableting process.
  • the tableting was performed in an Auto Carver CE press, model 3888CEPR0000). Molds were filled with 18g of powder with a formulation according to Example 9, 10 or 11 . The mold was lightly tapped on a hard surface to ensure even distribution of the powder before compaction. The dwell time during compaction was 1 second.
  • the tablet of Example 9 was in the form of a cylinder, rather than cuboid (as was the case for the tablets of Ex. 10 and 11).
  • the tablets of Ex. 10 and 11 had dimensions of 31.1 mm x 22.4 mm x 9.1 mm. The is no particular reason for this difference in shape other than that the solid of example 9 made with such a low compaction force was simply readily at hand.
  • the hardness of the solids was also measured using a Kraemer Elektronik labline H5 Series Tablet Testing System purchased from Charles Ischi AG. The following procedure was used: The solid is placed on the plate below the moving jaw.
  • the moving jaw was equipped with a “V” shaped cutting jaw tip of 90-degrees V-angle).
  • the V” shaped cutting jaw tip is more specifically a triangular prism-shape, where the walls which form the 90-degree V-corner provide a straight leading cutting edge of 16mm length.
  • the height of the V-shape was 2.9 mm.
  • the prism-shaped cutting tip is otherwise centrally placed on a rectangular flat-face with dimension of 16 x 22 mm, where the 16mm cutting-edge is parallelly aligned with the 16 mm side of the rectangular flat face.
  • the rectangular flat-face is part of a simple 6-sided cuboid with a further dimension of 67.7 mm.
  • the cuboid plus the triangular prism combined thus form the overall shape of the moving jaw.
  • the moving jaw moves at a speed of 35mm/sec until to solid fractures.
  • a calibrated load cell measures the required force to break the tablet as expressed in Newtons (N).
  • N Newtons
  • the break-force is measured when the solid is placed on its side so that cutting edge contacts a medium face.
  • the puck-shape solid was placed on its flat face so that the cutting edge contacts the opposing flat surface. With approximate cube- or spherical shaped, which face contacts the cutting edge is usually irrelevant.
  • Solids of the invention as provided in a cuboid shape of dimensions 31 mm x 22 mm x 9 mm, have a preferred hardness of from 10 to 250N, more preferably of 25 to 180N, even more preferably of from 35 to 160N, still even more preferably of from 40 to 150N and still even more preferably of from 45 to 120N. The more preferred hardness was found to coincide with more preferred foaming characteristics.

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Abstract

L'invention concerne un corps solide de nettoyage de filtre de lave-vaisselle qui comprend : au moins 60% en poids d'un système effervescent activé par l'eau ; et de 0,1 à 10% en poids de tensioactif, le tensioactif comprenant un tensioactif ionique et un tensioactif non ionique, le rapport en poids de tensioactif ionique : tensioactif non ionique étant de 0,5 : 1 à 18 : 1 ; et de 0,0005 à 10% en poids d'agent de contrôle de biofilm; et une solution à 1% en poids de la composition dans l'eau fournissant un pH de 2,0 à 8,0 lorsqu'il est mesuré à 25 degrés Celsius et dans des conditions sinon standards ; et le corps solide ayant un poids de 5 à 100 grammes.
PCT/EP2024/054498 2023-03-17 2024-02-22 Produit de nettoyage de filtre de lave-vaisselle WO2024193937A1 (fr)

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Citations (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1296839A (fr) 1969-05-29 1972-11-22
US4751015A (en) 1987-03-17 1988-06-14 Lever Brothers Company Quaternary ammonium or phosphonium substituted peroxy carbonic acid precursors and their use in detergent bleach compositions
US4760025A (en) 1984-05-29 1988-07-26 Genencor, Inc. Modified enzymes and methods for making same
WO1989006279A1 (fr) 1988-01-07 1989-07-13 Novo-Nordisk A/S Genes de subtilisine mutes
EP0384070A2 (fr) 1988-11-03 1990-08-29 Unilever Plc Zéolite P, son procédé de préparation et son utilisation dans les compositions détergentes
EP0458397A2 (fr) 1990-05-21 1991-11-27 Unilever N.V. Activation du blanchiment
WO1992019709A1 (fr) 1991-04-30 1992-11-12 The Procter & Gamble Company Detergents liquides contenant un adjuvant et un complexe polyol acide borique qui sert a inhiber l'enzyme proteolytique
WO1992019708A1 (fr) 1991-04-30 1992-11-12 The Procter & Gamble Company Detergents liquides comprenant un ester de borate aromatique servant a inhiber l'enzyme proteolytique
WO1993018140A1 (fr) 1992-03-04 1993-09-16 Novo Nordisk A/S Nouvelles proteases
WO1995005440A1 (fr) 1993-08-13 1995-02-23 The Procter & Gamble Company Detergent granuleux pour lave-vaisselle contenant des oxydes d'amines a longue chaine
WO1995026397A1 (fr) 1994-03-29 1995-10-05 Novo Nordisk A/S Amylase alcaline issue d'un bacille
US5679630A (en) 1993-10-14 1997-10-21 The Procter & Gamble Company Protease-containing cleaning compositions
WO2000060060A2 (fr) 1999-03-31 2000-10-12 Novozymes A/S Polypeptides presentant une activite alcaline alpha-amylase et acides nucleiques les codant
US6312936B1 (en) 1997-10-23 2001-11-06 Genencor International, Inc. Multiply-substituted protease variants
US20030032568A1 (en) 2000-02-23 2003-02-13 Binder Christopher James Detergent tablet
US20040116317A1 (en) * 2001-04-20 2004-06-17 Burt Diane Joyce Effervescent cleaning tablets
WO2006063231A1 (fr) * 2004-12-08 2006-06-15 The Procter & Gamble Company Procede pour nettoyer un lave-linge ou un lave-vaisselle
US7262042B2 (en) 2001-12-20 2007-08-28 Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) Alkaline protease from Bacillus gibsonii (DSM 14393) and washing and cleaning products comprising said alkaline protease
WO2008035071A1 (fr) * 2006-09-19 2008-03-27 Reckitt Benckiser N. V. Composition de détergent et procédé
WO2009021867A2 (fr) 2007-08-10 2009-02-19 Henkel Ag & Co. Kgaa Agents contenant des protéases
WO2013043860A1 (fr) 2011-09-22 2013-03-28 Danisco Us Inc. Activité dnase endogène pour réduire la teneur en adn
EP2746376B1 (fr) 2012-12-21 2017-08-30 The Procter & Gamble Company Composition pour laver la vaisselle
US10479981B2 (en) 2015-10-14 2019-11-19 Novozymes A/S DNase variants
US20200277552A1 (en) 2014-04-11 2020-09-03 Novozymes A/S Detergent Composition
EP3825392A1 (fr) * 2019-11-21 2021-05-26 Dalli-Werke GmbH & Co. KG Pastille de détergent comprenant un système effervescent
GB2603950A (en) * 2021-02-22 2022-08-24 Reckitt & Colman Overseas Hygiene Home Ltd Effervescent germicidal compositions

Patent Citations (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1296839A (fr) 1969-05-29 1972-11-22
US4760025A (en) 1984-05-29 1988-07-26 Genencor, Inc. Modified enzymes and methods for making same
US4751015A (en) 1987-03-17 1988-06-14 Lever Brothers Company Quaternary ammonium or phosphonium substituted peroxy carbonic acid precursors and their use in detergent bleach compositions
WO1989006279A1 (fr) 1988-01-07 1989-07-13 Novo-Nordisk A/S Genes de subtilisine mutes
EP0384070A2 (fr) 1988-11-03 1990-08-29 Unilever Plc Zéolite P, son procédé de préparation et son utilisation dans les compositions détergentes
EP0458397A2 (fr) 1990-05-21 1991-11-27 Unilever N.V. Activation du blanchiment
WO1992019709A1 (fr) 1991-04-30 1992-11-12 The Procter & Gamble Company Detergents liquides contenant un adjuvant et un complexe polyol acide borique qui sert a inhiber l'enzyme proteolytique
WO1992019708A1 (fr) 1991-04-30 1992-11-12 The Procter & Gamble Company Detergents liquides comprenant un ester de borate aromatique servant a inhiber l'enzyme proteolytique
WO1993018140A1 (fr) 1992-03-04 1993-09-16 Novo Nordisk A/S Nouvelles proteases
WO1995005440A1 (fr) 1993-08-13 1995-02-23 The Procter & Gamble Company Detergent granuleux pour lave-vaisselle contenant des oxydes d'amines a longue chaine
US5679630A (en) 1993-10-14 1997-10-21 The Procter & Gamble Company Protease-containing cleaning compositions
WO1995026397A1 (fr) 1994-03-29 1995-10-05 Novo Nordisk A/S Amylase alcaline issue d'un bacille
US6312936B1 (en) 1997-10-23 2001-11-06 Genencor International, Inc. Multiply-substituted protease variants
WO2000060060A2 (fr) 1999-03-31 2000-10-12 Novozymes A/S Polypeptides presentant une activite alcaline alpha-amylase et acides nucleiques les codant
US20030032568A1 (en) 2000-02-23 2003-02-13 Binder Christopher James Detergent tablet
US20040116317A1 (en) * 2001-04-20 2004-06-17 Burt Diane Joyce Effervescent cleaning tablets
US7262042B2 (en) 2001-12-20 2007-08-28 Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) Alkaline protease from Bacillus gibsonii (DSM 14393) and washing and cleaning products comprising said alkaline protease
WO2006063231A1 (fr) * 2004-12-08 2006-06-15 The Procter & Gamble Company Procede pour nettoyer un lave-linge ou un lave-vaisselle
WO2008035071A1 (fr) * 2006-09-19 2008-03-27 Reckitt Benckiser N. V. Composition de détergent et procédé
WO2009021867A2 (fr) 2007-08-10 2009-02-19 Henkel Ag & Co. Kgaa Agents contenant des protéases
WO2013043860A1 (fr) 2011-09-22 2013-03-28 Danisco Us Inc. Activité dnase endogène pour réduire la teneur en adn
EP2746376B1 (fr) 2012-12-21 2017-08-30 The Procter & Gamble Company Composition pour laver la vaisselle
US20200277552A1 (en) 2014-04-11 2020-09-03 Novozymes A/S Detergent Composition
US10479981B2 (en) 2015-10-14 2019-11-19 Novozymes A/S DNase variants
EP3825392A1 (fr) * 2019-11-21 2021-05-26 Dalli-Werke GmbH & Co. KG Pastille de détergent comprenant un système effervescent
GB2603950A (en) * 2021-02-22 2022-08-24 Reckitt & Colman Overseas Hygiene Home Ltd Effervescent germicidal compositions

Non-Patent Citations (13)

* Cited by examiner, † Cited by third party
Title
"Biobased Surfactants", 2019, AOCS PRESS, article "Synthesis, Properties, and Applications", pages: 287 - 301
A.HAMA, J.AM.OIL. CHEM.SOC., vol. 72, 1995, pages 781 - 784
C. KOLANO: "Household and Personal Care Today", 2012, pages: 52 - 55
COX M.E.WEERASOORIVA UHRECZUCH ET AL.: "Tenside Surf.Det.", vol. 28, 2001, pages: 72 - 80
DEFOAMING: "Theory and Industrial Applications", 1973, MARCEL DEKKER
GREENLIFETIPPS: "Genialer Trick: Wie DU mit BACKPULVER deine Geschirrsp�lmaschine OHNE M�HE reinigen kannst", 27 April 2022 (2022-04-27), XP93163615, Retrieved from the Internet <URL:https://www.youtube.com/watch?v=ZlTciB-UB-c&list=RDCMUCI1v-lPU5roQzGZDhBTnUxQ&index=17> [retrieved on 20240516] *
H. STACHE: "McCutcheon's Emulsifiers and Detergents", 1981, MANUFACTURING CONFECTIONERS COMPANY
NICO M. VAN OS: "Surfactant Science Series", 1998, MARCEL DEKKER
S-C JEE: "Efficient biofilms eradication by enzymatic-cocktail of pancreatic protease Type-1 and bacterial alpha-amylase", POLYMERS, vol. 12, 17 December 2020 (2020-12-17), pages 3032
SCHWARTZPERRY: "Interscience 1949", vol. 1, 1958, SCHWARTZ, PERRY & BERCH, INTERSCIENCE, article "Surface Active Agents"
SIEZEN ET AL., PROTEIN ENGNG., vol. 4, 1991, pages 719 - 737
SIEZEN ET AL., PROTEIN SCIENCE, vol. 74, 1997, pages 501 - 523
VIRULENSE, vol. 9, no. 1, 2018, pages 522 - 554

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