WO2023060532A1 - Composition de nettoyage solide de système à lait à haute efficacité non corrosive comportant des systèmes de tampon alcalin et procédés de production associés - Google Patents

Composition de nettoyage solide de système à lait à haute efficacité non corrosive comportant des systèmes de tampon alcalin et procédés de production associés Download PDF

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Publication number
WO2023060532A1
WO2023060532A1 PCT/CN2021/123984 CN2021123984W WO2023060532A1 WO 2023060532 A1 WO2023060532 A1 WO 2023060532A1 CN 2021123984 W CN2021123984 W CN 2021123984W WO 2023060532 A1 WO2023060532 A1 WO 2023060532A1
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composition
solid
cleaning
acid
cleaning composition
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PCT/CN2021/123984
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English (en)
Inventor
Haoran LI
Yihong CHANG
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Ecolab Usa Inc.
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Priority to CN202180103824.XA priority Critical patent/CN118215727A/zh
Priority to PCT/CN2021/123984 priority patent/WO2023060532A1/fr
Publication of WO2023060532A1 publication Critical patent/WO2023060532A1/fr

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    • 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
    • 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
    • C11D3/0047—Other compounding ingredients characterised by their effect pH regulated 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
    • C11D3/0052—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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/042—Acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/044—Hydroxides or bases
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/08—Silicates
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/10—Carbonates ; Bicarbonates
    • 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
    • C11D3/2082—Polycarboxylic 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
    • 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
    • C11D2111/20—Industrial or commercial equipment, e.g. reactors, tubes or engines

Definitions

  • the invention relates to solid cleaning compositions with at least one surfactant, such as an anionic and/or nonionic surfactant, an alkaline buffer system and at least one additional functional ingredient.
  • the solid composition can be provided as tablets, including single use tablets, suitable for cleaning coffee system and milk system equipment, including beverage machines that produces coffee and other drinks including hot drinks containing coffee, milk or milk froth. Methods for making the solid cleaning compositions and methods of using the same are also provided.
  • Automatic coffee machines are widely used in coffee shops and other settings, and they require daily cleaning due to the high potential of food-safety risks associated with contamination.
  • a fully automatic coffee machine there are generally two systems: a coffee system and a milk system.
  • the use of fresh milk makes the machines susceptible to spoilage of the milk within a short period of time and a cleanser is conventionally used to remove the milk residue within the pipes of the machines.
  • conventional alkaline cleansers cause damage to the coffee machines, such as causing deterioration of rubber sealing rings and other components due to use of high alkalinity, which deleteriously causes shortened usage periods of these machine components or the entire machine itself.
  • tablet cleaning compositions are preferred due to ease in dosing and as the cleansing process is often carried out with an automatic circulation within the system.
  • compositions effectively remove milk and other soils with a composition comprising, consisting of, or consisting essentially of a surfactant and an alkaline buffer system at a lower pH than conventional alkaline products while providing enhanced efficacy and improved compatibility with machine components treated with the compositions.
  • solid cleaning compositions comprise: from about 1 wt-%to about 10 wt-%of at least one anionic and/or nonionic surfactant; an alkaline buffer system comprising at least one alkalinity source and at least one acid source, wherein the at least one alkalinity source comprises a strong and/or weak alkalinity source, wherein the at least one acid comprises a solid acid source; and at least one additional functional ingredient.
  • methods of making the solid cleaning compositions comprise combining the surfactant, alkaline buffer system and at least one additional functional ingredient in a blender to form a cleaning composition; and pressing the cleaning composition into a solid composition form.
  • methods of cleaning a hard surface of object comprise: providing the solid cleaning compositions as described herein to a hard surface or object in need of cleaning; generating an alkaline solution of the solid cleaning composition on the hard surface or in contact with the object in need of cleaning; and cleaning soils from the hard surface or object, wherein the solid cleaning composition provides improved surface and object compatibility and cleaning efficacy in comparison to an alkaline cleaning composition having a pH > 11 and not containing the alkaline buffer system.
  • FIGS. 1A-1B shows a visual assessment of the solid cleaning composition performance in removing simulated milk soils as described in Example 1 during soaking (FIG. 1A) and following removal from the soak (FIG. 1B) .
  • FIG. 2 shows a visual assessment showing the impact of the alkaline buffer system of the solid cleaning composition on soil performance as described in Example 2.
  • FIG. 3 shows a visual assessment comparing milk soil removal of solid cleaning composition compared to a competitive product without the alkaline buffer system and increase pH conditions as described in Example 2.
  • FIG. 4 is a visual depiction of the taste testing flow for evaluating solid cleaning composition performance on coffee machines as judged based on any detection of chemical/taste residues as described in Example 5.
  • FIG. 5 shows the test results as described in Example 5.
  • the term “and/or” e.g., “X and/or Y” shall be understood to mean either “X and Y" or "X or Y” and shall be taken to provide explicit support for both meanings or for either meaning, e.g. A and/or B includes the options i) A, ii) B or iii) A and B.
  • actives or “percent actives” or “percent by weight actives” or “actives concentration” are used interchangeably herein and refers to the concentration of those ingredients involved in cleaning expressed as a percentage minus inert ingredients such as water or salts.
  • bioluminescence refers to the production and emission of light by a living organism.
  • the enzyme luciferase catalyzes the oxidation of luciferin, producing light.
  • CFUs colony-forming units
  • exemplary refers to an example, an instance, or an illustration of an embodiment, and does not indicate a most preferred embodiment unless otherwise stated.
  • the term "free" refers to compositions completely lacking the component or having such a small amount of the component that the component does not affect the performance of the composition.
  • the component may be present as an impurity or as a contaminant and shall be less than 0.5 wt-%. In another embodiment, the amount of the component is less than 0.1 wt-%and in yet another embodiment, the amount of component is less than 0.01 wt-%.
  • microbe or "microorganisms” as used herein, refer to microscopic organisms that are single-celled or multicellular. These organisms may include bacteria, viruses, fungi, and algae.
  • RLUs relative light units
  • surfactant or "surface active agent” refers to an organic chemical that when added to a liquid changes the properties of that liquid at a surface.
  • weight percent, " wt-%, “percent by weight, “ “%by weight, “ and variations thereof, as used herein, refer to the concentration of a substance as the weight of that substance divided by the total weight of the composition and multiplied by 100. It is understood that, as used here, “percent, “ “%, “ and the like are intended to be synonymous with “weight percent, " “wt-%, “ etc.
  • compositions may comprise, consist essentially of, or consist of the components and ingredients as well as other ingredients described herein.
  • consisting essentially of means that the methods and compositions may include additional steps, components or ingredients, but only if the additional steps, components or ingredients do not materially alter the basic and novel characteristics of the claimed methods and compositions.
  • the solid cleaning compositions are non-corrosive solid tablets with a surfactant and an alkaline buffer system, namely a weak alkalinity source and strong alkaline source in combination with an acid.
  • the solid cleaning compositions can include additional functional ingredients and are provided as stable, non-corrosive solids, preferably as tablets for single use.
  • Exemplary solid cleaning compositions are shown in Tables 1-3 in weight percentages. While the components may have a percent actives of 100%, it is noted that Tables 1-3 do not recite the percent actives of the components, but rather, recites the total weight percentage of the raw materials (i.e. active concentration plus inert ingredients) .
  • the solid cleaning compositions comprises one or more surfactants.
  • the surfactant (s) can include anionic and/or nonionic surfactants. In embodiments the surfactant (s) include at least one anionic surfactant. In embodiments the surfactant (s) include at least one nonionic surfactant. In still further embodiments the surfactant (s) include at least one anionic surfactant and at least one nonionic surfactant.
  • Surfactants can include salts of fatty acids, alkyl sulfates, alkyl ether sulfonates, alkyl aryl sulfonates, fatty alcohol polyether and combinations thereof.
  • the salts of fatty acids, alkyl sulfates, alkyl ether sulfonates, or alkyl aryl sulfonates surfactants have carbon chain lengths between about C9-C18, can be linear or branched, fatty alcohol polyether can have from about 3 to about 8 moles of ethylene oxide.
  • Exemplary surfactant (s) include, sodium dodecylbenzene sulfonate (also referred to as sodium lauryl benzene sulfonate) , sodium dodecyl sulfate (also referred to as sodium lauryl sulfate) , salts of myristic acid, palmitic acid, lauric acid, or oleic acid (e.g.
  • sodium myristate, sodium palmitate, sodium laurate, and sodium oleate sodium myristate sulfate, sodium alpha-olefin sulfonate, fatty alcohol polyether and the like, and most preferred is sodium dodecylbenzene sulfonate, sodium dodecyl sulfate, and/or sodium oleate.
  • the surfactant (s) is included in the solid cleaning composition at an amount of at least about 1 wt-%to about 20 wt-%, about 1 wt-%to about 10 wt-%, about 1 wt-%to about 9 wt-%, about 1 wt-%to about 8 wt-%, or about 2 wt-%to about 8 wt-%.
  • all ranges recited are inclusive of the numbers defining the range and include each integer within the defined range.
  • the solid cleaning compositions comprise an alkaline buffer system comprising at least one alkalinity source and at least one acid source.
  • the alkaline buffer system comprises at least two alkalinity sources which can include a combination of weak and/or strong alkalinity sources and at least one acid source.
  • the alkaline buffer system comprises, consists of or consists essentially of two alkalinity sources, wherein a weak and a strong alkalinity source are included and one acid source.
  • the alkaline buffer system provides an alkaline solution pH of the solid cleaning composition.
  • an alkaline solution provides a pH between about 10 to about 11 at varying concentrations.
  • a 1%concentration of composition in an alkaline solution provides a pH between about 10 to about 11.
  • a 1%solution is used to compare pH of the compositions to control compositions or formulations to demonstrate that at equal concentrations the alkaline buffer system of the solid cleaning compositions provides a lower pH for the cleaning solution in comparison to the control compositions or formulations.
  • the alkaline buffer system includes at least one weak alkalinity source, including for example, alkali metal weak alkalinity sources, such as alkali metal carbonates, alkali metal bicarbonates, alkali metal salts, phosphates, amines, and mixtures thereof.
  • alkali metal weak alkalinity sources such as alkali metal carbonates, alkali metal bicarbonates, alkali metal salts, phosphates, amines, and mixtures thereof.
  • Exemplary weak alkalinity sources include sodium carbonate, potassium carbonate, sodium bicarbonate (NaHCO 3 ) , or combinations thereof.
  • the weak alkalinity source of the alkaline buffer system is included in the solid cleaning composition at an amount of at least about 1 wt-%to about 50 wt-%, about 5 wt-%to about 45 wt-%, or about 8 wt-%to about 45 wt-%.
  • all ranges recited are inclusive of the numbers defining the range and include each integer within the defined range.
  • the alkaline buffer system includes at least one strong alkalinity source, including for example, alkali metal strong alkalinity sources, such as alkali metal hydroxides, alkali metal silicates, and/or alkali metal metasilicates.
  • alkali metal strong alkalinity sources such as alkali metal hydroxides, alkali metal silicates, and/or alkali metal metasilicates.
  • exemplary strong alkalinity sources include sodium metasilicate, potassium metasilicate, sodium hydroxide (NaOH) , potassium hydroxide (KOH) , or combinations thereof.
  • the strong alkalinity source of the alkaline buffer system is included in the solid cleaning composition at an amount of at least about 0.1 wt-%to about 5 wt-%, about 0.5 wt-%to about 5 wt-%, or about 0.5 wt-%to about 4 wt-%.
  • all ranges recited are inclusive of the numbers defining the range and include each integer within the defined range.
  • the alkaline buffer system includes at least one acid source.
  • an acid is a component that can be added to an aqueous system and result in a pH less than 7.
  • a solid acid is included in the buffer system.
  • Exemplary acids include an alpha hydroxycarboxylic acid, such as citric acid, tartaric acid, malic acid, sulfamic acid, oxalic acid, lactic acid, gluconic acid, and the like; carboxylic acids, such as formic acid, acetic acid, propionic acid, and the like; other common organic acids include ascorbic acid, glutamic acid, levulinic acid, etc.
  • Preferred acids include citric acid, tartaric acid, malic acid, fumaric acid, adipic acid, and sulfamic acid.
  • the acid source of the alkaline buffer system is included in the solid cleaning composition at an amount of at least about 1 wt-%to about 15 wt-%, about 3 wt-%to about 15 wt-%, or about 5 wt-%to about 15 wt-%.
  • all ranges recited are inclusive of the numbers defining the range and include each integer within the defined range.
  • the remainder of the solid cleaning compositions comprise one or more additional functional components suitable for uses disclosed herein, including solid composition formulation and/or hard surface cleaning.
  • the solid cleaning compositions including the-surfactant (s) and the alkaline buffer system include at least one additional functional ingredient.
  • the solid cleaning compositions including the surfactant (s) and the alkaline buffer system include at least two additional functional ingredients.
  • the solid cleaning compositions including the surfactant (s) and the alkaline buffer system include at least three additional functional ingredients.
  • the additional functional ingredients provide desired properties and functionalities to the compositions.
  • the term "functional ingredient” includes a material that aids in the formation and/or processing of a solid composition, enhances stability of a solid composition, and/or when dispersed or dissolved in a use and/or concentrate solution, such as an aqueous solution, provides a beneficial property in a particular use.
  • functional materials are discussed in more detail below, although the particular materials discussed are given by way of example only, and that a broad variety of other functional ingredients may be used. For example, many of the functional materials discussed below relate to materials used in cleaning. However, other embodiments may include functional ingredients for use in other applications.
  • the solid cleaning compositions may include chelating agents (chelants) , pressing aids, fillers, bleaching agents, stabilizing agents, corrosion inhibitors, solubility modifiers, dispersants, metal protecting agents, optical brighteners, defoaming agents, anti-redeposition agents, soil antiredeposition agents, builders, sequestrants, enzymes, aesthetic enhancing agents including fragrances and/or dyes, additional rheology and/or solubility modifiers or thickeners, hydrotropes or couplers, buffers, solvents, additional cleaning agents and the like.
  • Preferred additional functional ingredients include chelants, pressing aids, fillers, and additional cleaning agents.
  • the various additional functional ingredients may be provided in a composition in the amount from about 20 wt-%and about 95 wt-%, from about 30 wt-%and about 90 wt-%, from about 30 wt-%and about 80 wt-%, from about 30 wt-%and about 75 wt-%, or from about 40 wt-%and about 75 wt-%.
  • all ranges recited are inclusive of the numbers defining the range and include each integer within the defined range.
  • the solid cleaning compositions can include one or more chelating agents (chelants) , which may also be referred to as a sequestering agent or builder.
  • chelants may include, for example phosphonic acid and phosphonates, phosphates, an aminocarboxylic acid, aminocarboxylates and their derivatives, a polyacrylate, ethylenediamine and ethylenetriamine derivatives, hydroxyacids, and mono-, di-, and tri-carboxylates and their corresponding acids, and mixtures and derivatives thereof.
  • a chelating agent is a molecule capable of coordinating (i.e., binding) the metal ions commonly found in natural water to prevent the metal ions from interfering with the action of the other ingredients of a wetting agent or other cleaning composition.
  • the chelant may also function as a threshold agent when included in an effective amount.
  • aminocarboxylates include, for example, n-hydroxyethyliminodiacetic acid, nitrilotriacetic acid (NTA) , ethylenediaminetetraacetic acid (EDTA) , N-hydroxyethyl-ethylenediaminetriacetic acid (HEDTA) , diethylenetriaminepentaacetic acid (DTPA) , and the like.
  • Biodegradable aminocarboxylates can also be used, including ethanoldiglycine, e.g., an alkali metal salt of ethanoldiglycine, methylglycinediacetic acid, e.g., an alkali metal salt of methylgylcinodiacetic acid, such as trisodium methylglycinediacetic acid; iminodisuccinic acid, e.g., an alkali metal salt of iminodisuccinic acid, such as iminodisuccinic acid sodium salt; N, N-bis- (carboxylatomethyl) -L-glutamic acid (GLDA) , e.g., an alkali metal salt of N, N-bis (carboxylatomethyl) -L-glutamic acid, such as iminodisuccinic acid sodium salt (GLDA-Na 4 ) ; [S--S] -ethylenediaminedisuccinic acid (EDDS) , e
  • polymeric polycarboxylates suitable for use as sequestering agents include those having a pendant carboxylate (--CO 2 ) groups and include, for example, polyacrylic acid, maleic/olefin copolymer, acrylic/maleic copolymer, polymethacrylic acid, acrylic acid-methacrylic acid copolymers, hydrolyzed polyacrylamide, hydrolyzed polymethacrylamide, hydrolyzed polyamide-methacrylamide copolymers, hydrolyzed polyacrylonitrile, hydrolyzed polymethacrylonitrile, hydrolyzed acrylonitrile-methacrylonitrile copolymers, and the like.
  • the composition may include an aminocarboxylate or its derivatives, including for example sodium aminocarboxylate or a biodegradable aminocarboxylate or derivative thereof.
  • Gluconates can also be included as chelant actives, such as sodium gluconate.
  • composition is phosphate free.
  • the chelant (s) may be provided in a composition in the amount from about 1 wt-%and about 20 wt-%, from about 1 wt-%and about 10 wt-%, from about 2 wt-%and about 10 wt-%, or from about 5 wt-%and about 10 wt-%.
  • all ranges recited are inclusive of the numbers defining the range and include each integer within the defined range.
  • the solid cleaning compositions can include one or more pressing aids.
  • Pressing aids can include functional ingredients to improve pressing, such as to avoid sticking in a press.
  • Pressing aids can also include lubricating actives.
  • Exemplary pressing aids include, for example, solid polyethylene glycols (e.g. PEG 6000, PEG 8000) , stearates (e.g. Mg stearate) , oleates (e.g. sodium oleate which can reduce friction and stickiness in formulations) , and the like.
  • a PEG is included to reduce friction between powders pressed in the solid cleaning composition.
  • a stearate prevents sticking on the mold and oleates can be included as a supplement.
  • the pressing aid (s) may be provided in a composition in the amount from about 0.5 wt-%to about 10 wt-%, from about 1 wt-%to about 8 wt-%, or from about 3 wt-%to about 8 wt-%.
  • all ranges recited are inclusive of the numbers defining the range and include each integer within the defined range.
  • the solid cleaning compositions can include one or more fillers for the solid compositions.
  • Exemplary fillers include sorbitol, mannitol, lactose, cellulose, cellulose with carboxyl/methyl/ethyl modifications, and the like.
  • the filler (s) may be provided in a composition in the amount from about 20 wt-%and about 70 wt-%, from about 30 wt-%and about 70 wt-%, or from about 40 wt-%and about 70 wt-%.
  • all ranges recited are inclusive of the numbers defining the range and include each integer within the defined range.
  • Method of making the solid cleaning compositions described include a first step of combining the anionic surfactant, alkaline buffer system and the at least one additional functional ingredient.
  • the components or a majority of the components
  • the combining step can be in a blender to form a cleaning composition that is then pressed into a solid composition form.
  • Various types of pressing forms and/or tableting machines can be employed based on the intended size and shape of the solid cleaning composition.
  • the solid composition form is shaped to match a coffee machine cleaning design for dosing the solid cleaning composition into a coffee machine in need of cleaning.
  • a press can be configured to press the powders (or flowable solid components) into a mold and any chamber or chambers that might be in the mold.
  • a press can also include, for example, a ram configured to be moved down onto the powders (or flowable solid components) in mold and any chamber or chambers at a preselected pressure (psi) .
  • pressing can employ low pressures compared to conventional pressures used to form tablets or other conventional solid cleaning compositions.
  • one or more pressing aids are included in the additional functional ingredients of the solid cleaning composition to provide improved pressing based on the design or shape and the size of the solid or tablet.
  • the solid cleaning compositions may be provided in various solids and solid sizes. These can include for example, a pellet, a tablet, a lozenge, a puck, a briquette, a brick, a solid block, or a unit dose.
  • solid tablets are provided. In some embodiments tablets can be ⁇ 100 grams, or about 1 gram to about 100 grams. In other embodiments larger solid compositions can be provided. Solid block weighing at least about 100 grams, or even 1 kg to about 10 kg could be produced for various uses as well.
  • the solids provided are stable solid compositions which means that they retains its shape under conditions in which the composition may be stored or handled.
  • the solids are also shelf stable. In embodiments the solids have at least about 24 month or at least about 36 month shelf stability.
  • the solid cleaning compositions are suited for cleaning hard surfaces and objects.
  • the solid cleaning compositions are efficacious in cleaning and removing soils from such surfaces and objects, including for example fatty and proteinaceous soils, mineral and organic soils, and films/foams that are left as residues on surfaces and objects, such as from fresh milk stains in coffee machines, including automatic coffee machines.
  • the solid cleaning compositions are efficacious in removing milk stains from coffee machines and other hard surfaces and objects.
  • the removal of soils along with microbes is critical when cleaning surfaces that are used for producing food and/or drinks for human consumption. There are various government agencies having set standards or guidelines intended to reduce the presence of soils, namely microbes. Therefore, the removal of such soils and microbes is essential for many industries. For food and beverage processing equipment, including smaller equipment such as coffee machines, equipment is only taken down for cleaning periodically and, as a practical matter, cannot remain offline for an extended period.
  • the solid cleaning compositions described herein provide numerous cleaning improvements.
  • the surfactant (s) perform efficaciously in an alkaline environment provided by the alkaline buffer system to remove the protein and fatty oil soils.
  • the alkaline buffer system of the solid composition provides an alkaline and acid source providing enhanced dissolving speed with a buffering system that also provides effervescence in the cleaning.
  • the inclusion of chelants as additional functional ingredients further remove minerals.
  • the methods of cleaning with the solid cleaning composition include a first step of providing the solid cleaning composition to a hard surface or object in need of cleaning.
  • the solid composition is then contacted with a water source to generate an alkaline solution (can be referred to as a use solution) of the solid cleaning composition.
  • the concentration of the alkaline solution provides at least about 100 ppm surfactant.
  • the solid cleaning compositions can be applied at an alkaline use solution to a surface or object in need of cleaning.
  • a use concentration of the solid cleaning composition includes from about 100 ppm to about 50,000 ppm, or from about 1000 ppm to about 50,000 ppm, or from about 2000 ppm to about 40,000 ppm, or from about 3000 ppm to about 40,000 ppm, including all ranges therebetween.
  • the use solution beneficially provides a pH between of about 10, or at least about 10 to provide efficacious cleaning, preferably between about 10 to about 11, or even between about 10 to about 10.8.
  • a 1%solution of the solid cleaning composition is used to generate a use solution. However, this concentration will vary depending upon factors including the size of the coffee machine and the amount of water used in the cleaning procedure.
  • the solution of the cleaning composition is applied or in contact with the hard surface or object in need of cleaning (e.g. coffee machine with a milk line) .
  • the pH of about 10 or greater, or between about 10-11 provides both improved surface and object compatibility and cleaning efficacy in removing of soils and microbes in comparison to an alkaline cleaning composition having a more alkaline pH, including a pH > 11 and not containing the alkaline buffer system.
  • tablets can be formulated ⁇ about 100 grams and the pH of the solution generated from 1 tablet per 1 L water is between about 10 to about 11, or even between about 10 to about 10.8. However the pH will vary dependent upon factors of dilution employed.
  • the methods further include a rinsing step for the hard surface or object after cleaning the soils with the use solution of the solid cleaning composition.
  • the object is a coffee machine with a milk line (or other objects with materials having compatibility limitations to being cleaned with highly alkaline compositions)
  • the compositions beneficially do not damage rubber or other soft surfaces on or in the machine.
  • the tablet size and shape of a solid cleaning composition can be provided to fit into a coffee machine holder.
  • the tablet (or other solid form) can be adapted to the geometry of the chamber used for introducing the tablet (or other solid form) for cleaning.
  • the cleaning system is then started on a machine, which automatically flushes water (of varying temperatures and volumes) onto the solid cleaning composition tablet to make the cleansing solution.
  • the procedure is contained within the coffee machine based on the design of the coffee machine (including amount of water added in a cleaning cycle) .
  • the solid cleaning compositions are useful for clean-in-place (CIP) and clean-out-of-place (COP) applications.
  • CIP applications include those where the solid cleaning composition is passed through the pipes without dissembling equipment.
  • COP systems may include readily accessible systems including wash tanks, soaking vessels, mop buckets, holding tanks, scrub sinks, vehicle parts washers, non-continuous batch washers and systems, and the like.
  • the solid cleaning compositions are further suitable for removing mineral soils.
  • the solid cleaning compositions may be used on stainless steel pipes which need to use solid cleaners to de-lime surfaces.
  • Exemplary industries in which the methods of the present invention can be applied include, but are not limited to: the food, beverage and restaurant industry, e.g., the dairy, cheese, sugar, and brewery industries, including for example cups, milk tanks, cake molds, evaporator and pasteurizer cleaning, including ultra-high temperature (UHT) and high temperature short time (HTST) pasteurizers; oil processing industry; industrial agriculture and ethanol processing; and other applications requiring protein soil removal, such as blood stain removal in health care.
  • UHT ultra-high temperature
  • HTST high temperature short time
  • the process includes applying or circulating a water diluted solution of cleaning concentrate (typically about 0.5-3%by volume) onto the surface to be cleaned.
  • the solution flows across the surface (3 to 6 feet/second) to remove the soil. Either new solution is re-applied to the surface, or the same solution is re-circulated and re-applied to the surface as required to achieve a clean soil-free surface.
  • the solid cleaning compositions can be applied to surfaces using a variety of methods. These methods can operate on an object, surface, or the like, by contacting the object or surface with the composition. Contacting can comprise any of numerous methods for applying a liquid, such as spraying the compound, immersing the object in the compound, foam or gel treating the object with the compound, or a combination thereof. Without being limited to the contacting according to the invention, a concentrate or use liquid composition can be applied to or brought into contact with an object by any conventional method or apparatus for applying a liquid composition to an object. For example, the surface can be wiped with, sprayed with, foamed on, and/or immersed in the liquid compositions, or use liquid compositions made from the concentrated liquid compositions. The liquid compositions can be sprayed, foamed, or wiped onto a surface; the compound can be caused to flow over the surface, or the surface can be dipped into the compound. Contacting can be manual or by machine.
  • the solid cleaning compositions are in contact with a surface or object for a sufficient amount of time to clean the surface or object.
  • the solid cleaning compositions are first dissolved in water to produce the alkaline solution of the cleaning composition.
  • the surface or object is contacted with the alkaline cleaning composition for at least about 1 minute, at least about 10 minutes, or between about 20 minutes and about 40 minutes.
  • the methods can further include a rinsing step.
  • the methods are particularly well suited for daily cleaning and removal of soil, including protein soils.
  • the solid cleaning compositions may also be suitable for cleaning other hard surfaces.
  • facilities having hard surfaces include food and beverage plants, dairy plants, farms and dairies, breweries, ethanol plants, full service and quick service restaurants, grocery stores, warehouse and retail stores, commercial or office space, hotels, motels, hospitals, paper mills, industrial manufacturing plants including automotive plants, cooling towers, water treatment plants, refineries, oil and gas fields and pipelines, and drilling platforms.
  • hard surfaces include food and beverage processing equipment including pipes, tanks, evaporators, spray nozzles and the like, dairy processing equipment, milk tanks, milk trucks, milking equipment, countertops, cooking surfaces, bathroom surfaces such as sinks and toilet handles, light switch panels, doorknobs, call buttons, phone handles, remote controls, desktops, patient rails, grab bars, surgical instruments, equipment inside paper mills including pipes, chests, headboxes, broke towers, blades, forming wire, and the like.
  • Embodiments of the present invention are further defined in the following non-limiting Examples. It should be understood that these Examples, while indicating certain embodiments of the invention, are given by way of illustration only. From the above discussion and these Examples, one skilled in the art can ascertain the essential characteristics of this invention, and without departing from the spirit and scope thereof, can make various changes and modifications of the embodiments of the invention to adapt it to various usages and conditions. Thus, various modifications of the embodiments of the invention, in addition to those shown and described herein, will be apparent to those skilled in the art from the foregoing description. Such modifications are also intended to fall within the scope of the appended claims.
  • a simulated milk soil test was conducted to evaluate an exemplary solid cleaning composition formulation as shown in Table 4 on removing milk soils.
  • the competitive product evaluation is a commercial product that includes surfactants (1-6 wt-%) , including the anionic surfactant sodium dodecyl sulfate and the nonionic surfactant 1-dodecanol (lauryl alcohol) , with a sodium metasilicate alkalinity source ( ⁇ 1 wt-%) as active ingredients.
  • surfactants 1-6 wt-%)
  • anionic surfactant sodium dodecyl sulfate and the nonionic surfactant 1-dodecanol (lauryl alcohol)
  • a sodium metasilicate alkalinity source ⁇ 1 wt-%
  • FIG. 3 Further comparison of soil removal using the solid cleaning composition of Table 4 to the competitive product is shown in FIG. 3 showing a significant improvement in milk soil removal with the solid cleaning composition.
  • the competitive formulation has a strongly alkaline pH of 10.8-11, where the solid cleaning composition has a pH less than 10.8, as shown in Table 4 the pH is about 10.2 with the alkaline buffer system.
  • a commercial coffee machine was used to make 300 cups of coffee (120 cups Americano and 180 cups latte) and then evaluated for ATP, micro bio, and chemical residue as described herein to evaluate efficacy of the solid cleaning composition shown in Table 4.
  • ATP test method ATP is used to check the cleanness of surface.
  • the term "adenosine triphosphate” (ATP) refers to a molecule used to transport chemical energy within cells. ATP contains adenine, ribose, and three phosphate groups. ATP breaks down into adenosine diphosphate (ADP) and phosphate to release energy. ATP is contained in bacteria, yeasts, molds and all animals and plants, including food and food residues. ATP does not exist in inanimate debris. The amount of ATP in each unit of biomass is relatively constant and can be quantified by bioluminescence (luciferin luciferase) reaction.
  • luciferase and luciferin from fireflies are mixed with a sample with a cation, such as magnesium, in the presence of oxygen. If ATP is present, it will cause a reaction between luciferase (the substrate) and luciferin (the catalyst) in an oxidation reaction which produces light. Light emissions are detected with a luminometer and reported in relative light units (RLUs) . The amount of light produced is proportional to the metabolic activity of microbial organisms present, but does not indicate the amount of organisms present.
  • the luciferase/luciferin reaction is well known in the art, and there are commercial sources for the necessary reagents as well as protocols for their use. For example, several luciferase/luciferin reagents along with luciferase are available in commercial kits.
  • An ATP swab is used to take a 10 cm by 10 cm area (or as much area as possible if the size is less than this) from the evaluated surface.
  • the swab is put into the test tube and activated. After activation the test tube is quickly oscillated for 5 seconds to fully mix the reagent.
  • Test method is referred to China Standard GB/T 36004-2018 Food contact surface cleaning and disinfection efficacy test method-ATP bioluminescence method.
  • the test equipment is 3M Clean-Trace and the surface ATP applicator is inserted into the detector for detection.
  • the measured results are expressed using bioluminescence in relative light units (RLU) . Micro bio tests were also measured. The results are shown in Table 6.
  • the solid cleaning composition was added to the coffee machine for a cleaning cycle.
  • the tablet size and shape is provided to fit into the coffee machine holder.
  • the cleaning system is started on the machine, which automatically flushes water onto the solid cleaning composition tablet to make the cleansing solution.
  • the procedure is contained within the coffee machine based on the design of the coffee machine (including amount of water added in a cleaning cycle) .
  • the ATP and total bacteria count measured at both the outlet and inlet was substantially reduced following treatment with the solid cleaning composition. It is preferred to have an ATP reduction that is less than 100.
  • the bacteria reduction is meaningful with a reduction of at least about 90%total bacteria beneficially providing sanitizing efficacy.
  • the yeast cfu count did not have measurable difference at the outlet as there was no mold present; therefore no reduction detected. Overall, the results demonstrate a significant reduction in micro data.
  • FIG. 4 shows a schematic of the taste testing flow for evaluating any taste residue from the solid cleaning composition performance on coffee machines.
  • the test methodology uses taste testers to judge whether they are able to detect any chemical/taste residues from the cleaning described in Example 3.
  • FIG. 5 shows the test results for each tasting sequence including the number of taste testers and the number of ‘right’ answers of the ability to detect a different between sample A (sample water from the outlet after cleaning with the solid cleaning composition) and sample B (sample water from the outlet before cleaning with the solid cleaning composition) .
  • the outlets include both a milk and coffee outlet that is mixed.
  • the results show there is no obvious difference in taste of water from the outlet of the coffee machine after cleaning with the solid cleaning composition. Based on the total number of testers and the sequences evaluated 15 ‘right’ answers does not meet the threshold of a 5%difference detected (which would be 22 right answers and only 15 right answers were given) .

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Abstract

Des compositions de nettoyage solides comportant un ou des tensioactifs, un système de tampon alcalin et au moins un ingrédient fonctionnel supplémentaire sont divulguées. La composition solide peut être fournie sous forme de comprimés, y compris des comprimés à usage unique, appropriés en vue du nettoyage d'équipement de système à café et de système à lait. L'invention concerne également des procédés de fabrication des compositions de nettoyage solides et des procédés d'utilisation de ces dernières.
PCT/CN2021/123984 2021-10-15 2021-10-15 Composition de nettoyage solide de système à lait à haute efficacité non corrosive comportant des systèmes de tampon alcalin et procédés de production associés WO2023060532A1 (fr)

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CN202180103824.XA CN118215727A (zh) 2021-10-15 2021-10-15 具有碱性缓冲体系的非腐蚀性高效奶系统固体清洁组合物及其产生方法
PCT/CN2021/123984 WO2023060532A1 (fr) 2021-10-15 2021-10-15 Composition de nettoyage solide de système à lait à haute efficacité non corrosive comportant des systèmes de tampon alcalin et procédés de production associés

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013000573A2 (fr) * 2011-06-30 2013-01-03 Steiner Ag Weggis Système de nettoyage pour machine à café ou dispositif analogue
WO2018141074A1 (fr) * 2017-01-31 2018-08-09 Bonyf Ag Procédé d'élimination de résidus de lait et composition d'un comprimé de nettoyage ou d'une poudre de nettoyage
CN111286410A (zh) * 2020-03-16 2020-06-16 南京卫岗乳业有限公司 一种泡腾片及其制备方法和应用

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013000573A2 (fr) * 2011-06-30 2013-01-03 Steiner Ag Weggis Système de nettoyage pour machine à café ou dispositif analogue
WO2018141074A1 (fr) * 2017-01-31 2018-08-09 Bonyf Ag Procédé d'élimination de résidus de lait et composition d'un comprimé de nettoyage ou d'une poudre de nettoyage
CN111286410A (zh) * 2020-03-16 2020-06-16 南京卫岗乳业有限公司 一种泡腾片及其制备方法和应用

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