EP4098728A1 - Procédé de fabrication de détergent pour le lavage manuel de la vaisselle à viscosité modifiée - Google Patents

Procédé de fabrication de détergent pour le lavage manuel de la vaisselle à viscosité modifiée Download PDF

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Publication number
EP4098728A1
EP4098728A1 EP21177323.9A EP21177323A EP4098728A1 EP 4098728 A1 EP4098728 A1 EP 4098728A1 EP 21177323 A EP21177323 A EP 21177323A EP 4098728 A1 EP4098728 A1 EP 4098728A1
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Prior art keywords
weight
composition
surfactant
preferred
solvent
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EP21177323.9A
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German (de)
English (en)
Inventor
Alexander Tollkoetter
Peter Victor
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Henkel AG and Co KGaA
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Henkel AG and Co KGaA
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Priority to EP21177323.9A priority Critical patent/EP4098728A1/fr
Publication of EP4098728A1 publication Critical patent/EP4098728A1/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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—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
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/0094—Process for making liquid detergent compositions, e.g. slurries, pastes or gels
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/046—Salts
    • 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
    • C11D3/43—Solvents

Definitions

  • Dishwashing detergents in particular liquid dishwashing detergents for manual cleaning of dishes, are known.
  • low viscosity hand dishwashing compositions are perceived by consumers as being of inferior quality. Viscosity is therefore an important quality criterion for hand dishwashing compositions.
  • modern hand dishwashing detergents should be produced in an environmentally friendly manner and at the same time have the best possible cleaning performance.
  • Another special feature of hand dishwashing compositions is the requirement that they should be gentle on the skin.
  • the object on which the present invention is based is therefore to provide a process for the production of hand dishwashing detergents which are perceived by the consumer as being of high quality and which can also be processed in an environmentally friendly manner and at the same time have good skin compatibility.
  • the process utilizes the good viscosity profile which is achieved through the interaction of inorganic salt and solvent at pH values of around 7, it being essential that the pH value is adjusted after the solvent has been metered in.
  • the viscosity of the composition is at least 1000 cps to 4000 cps. In a more preferred embodiment, the viscosity of the composition is at least 1500 cps to 2500 cps. In an even more preferred embodiment, the viscosity of the composition is at least 1800 cps to 2200 cps.
  • the viscosity is determined using a Brookfield LVDV II+, spindle 31 at a temperature of 20°C at 12 rpm. According to a preferred embodiment the method is described wherein the pH of the composition is adjusted to a value between 7.5 and 8.5.
  • a method is described in which all of the organic solvent is provided before the pH is adjusted. After the pH adjustment, which preferably takes place using an acid, no further organic solvent is added according to this embodiment.
  • This embodiment has the advantage that the pH value is adjusted with an optimized viscosity profile.
  • a method is described in which the inorganic salt is provided before the pH is adjusted. After the pH adjustment, which preferably takes place using an acid, no further inorganic salt is added according to this embodiment.
  • This embodiment has the advantage that the adjusted pH value of the composition is prevented from being changed by the addition of further salt.
  • the process is described wherein the salt is an alkali metal halide and/or an alkaline earth metal halide, preferably sodium chloride.
  • the process is described wherein the amount of inorganic salt is at least 2% by weight, preferably at least 4% by weight.
  • the total amount of solvent is at least 1% by weight, more preferably at least 2% by weight and more preferably at least 2.5% by weight.
  • the process is described wherein the ratio of total surfactant content to solvent is less than 10, preferably is between 4 and 6, and more preferably is 4 or 5.
  • the method is described wherein the solvent comprises ethanol and/or cumene sulfonate.
  • the method is described wherein the composition comprises at least one enzyme.
  • the method is described wherein the composition comprises an anionic surfactant.
  • the method is described wherein the composition comprises an amine oxide and/or a betaine surfactant.
  • the method is described wherein the total amount of surfactant is at least 5% by weight, more preferably at least 12% by weight, more preferably at least 20% by weight.
  • the organic solvent is provided before the pH of the composition is adjusted to a value between 7 and 8.5.
  • the pH is adjusted to a value between 7 and 8.5 after providing at least one anionic surfactant.
  • the pH is adjusted to a value between 7 and 8.5 by adding an acid, for example citric acid.
  • adjustment of the pH takes place after the inorganic salt is provided.
  • the pH value is adjusted before the at least one inorganic salt is provided.
  • the added amount of the component in the specified process step is at least 50% by weight, more preferably at least 70% by weight, more preferably at least 90% by weight of the total amount of the component in the composition.
  • the process step “providing organic solvent before adjusting the pH of the composition” would be to be interpreted as meaning that at least 50% by weight, more preferably at least 70% by weight, more preferably at least 90% by weight, of total amount of solvent before adjusting the pH.
  • a hand dishwashing composition wherein the level of amine oxides having a C16 or longer radical is less than 20%, more preferably less than 10%, based on the total weight of amine oxides in the composition.
  • a hand dishwashing composition wherein the anionic surfactant is present in an amount of at least 4%, preferably at least 10% by weight based on the total weight of the composition.
  • a hand dishwashing composition wherein amine oxide is present in an amount of at least 4% by weight based on the total weight of the composition.
  • a hand dishwashing composition wherein betaine is present in an amount of at least 4% by weight based on the total weight of the composition.
  • a hand dishwashing composition comprising an organic solvent, which is preferably ethanol and more preferably is present in an amount of at least 2% by weight.
  • a manual dishwashing composition is described, the proportion of amine oxides having a C12 radical being between 50 and 85%, based on the total amount of amine oxide, preferably between 60 and 85%.
  • a hand dishwashing composition in which the proportion of amine oxides which have a C14 radical is between 20 and 35%, based on the total amount of amine oxide.
  • a hand dishwashing composition in which the proportion of amine oxides which have only C10 or smaller radicals is less than 5% based on the total amount of amine oxide.
  • a hand dishwashing composition wherein the surfactant system contains at least one anionic surfactant selected from ether sulfates, alkyl sulfates and mixtures thereof.
  • Hand dishwashing composition wherein the dishwashing composition contains at least one additional ingredient selected from the group consisting of water, enzymes, organic solvents, enzymes, additives to improve drainage and drying behavior, to adjust viscosity and/or for stabilization, UV stabilizers, perfume, pearlescent agents, Dyes, corrosion inhibitors, bitter substances, organic salts, disinfectants, structuring polymers, defoamers, encapsulated ingredients, pH adjusters and additives that improve the feeling of the skin or care for it.
  • the dishwashing composition contains at least one additional ingredient selected from the group consisting of water, enzymes, organic solvents, enzymes, additives to improve drainage and drying behavior, to adjust viscosity and/or for stabilization, UV stabilizers, perfume, pearlescent agents, Dyes, corrosion inhibitors, bitter substances, organic salts, disinfectants, structuring polymers, defoamers, encapsulated ingredients, pH adjusters and additives that improve the feeling of the skin or care for it.
  • the present invention is also directed towards the use of the dishwashing detergent according to the invention for the manual cleaning of dishes.
  • At least one refers to 1 or more, for example 2, 3, 4, 5, 6, 7, 8, 9 or more. In the context of components of the compounds described herein, this specification does not refer to the absolute amount of molecules, but to the type of component. "At least one surfactant” therefore means, for example, that only one type of surfactant compound or several different types of surfactant compounds can be present, without giving any information about the amount of the individual compounds.
  • the expression “substantially free from” means that the compound in question can in principle be present, but is then present in an amount that does not impair the function of the other components.
  • the property "substantially free from” of a specific compound is therefore preferably a total weight of less than 0.1% by weight, more preferably less than 0.001% by weight, in particular free of this, based on the total weight of dishwashing detergent.
  • Information about the molecular weight relates to the weight-average molecular weight in g/mol, unless the number-average molecular weight is explicitly mentioned.
  • Molecular weights are preferably determined by GPC using polystyrene standards.
  • fatty acids or fatty alcohols or their derivatives are representative of branched or unbranched carboxylic acids or alcohols or their derivatives preferably having 6 to 22 carbon atoms.
  • the oxo-alcohols or their derivatives which can be obtained, for example, by ROELEN's oxo-synthesis can also be used accordingly.
  • constituents of the present compositions are salts, they are preferably alkali metal or alkaline earth metal salts of the respective compounds, more preferably the alkali metal salts, in particular the sodium or potassium salts, most preferably sodium salts, thereof.
  • alkaline earth metals are mentioned below as counterions for monovalent anions, this means that the alkaline earth metal is of course only present in half the amount of substance - sufficient for charge equalization - as the anion.
  • the dishwashing detergent according to the invention is preferably essentially free from cationic surfactants.
  • the composition has at least one alkyl benzene sulfonate, which preferably has one C2-18 alkyl radical. It is particularly preferably cumene sulfonate.
  • alkylbenzenesulfonate is understood to mean only a benzene ring which is substituted by an alkyl radical and also carries a sulfonate radical.
  • the at least one alkyl benzene sulfonate is present in 0.5 to 50% by weight, preferably 0.5 to 30% by weight, particularly preferably 0.5 to 5% by weight, based on the total weight of the dishwashing detergent .
  • the at least one fatty alcohol sulfate is preferably selected from C8-18 fatty alcohol sulfates.
  • Particularly preferred fatty alcohol sulfates are derived from C12-18 fatty alcohols, for example coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol.
  • sodium lauryl sulfate is preferred.
  • the at least one fatty alcohol sulfate is present at 0.5 to 45% by weight, preferably 0.5 to 40% by weight, more preferably 3 to 15% by weight, based on the total weight of the dishwashing detergent.
  • the at least one amine oxide is a compound having the formula R1R2R3NO wherein each R1, R2 and R3 independently of the others is an optionally substituted, e.g. hydroxy-substituted, C1-C30 hydrocarbon chain is.
  • Amine oxides used with particular preference are those in which R1 is C10-C16 alkyl and R2 and R3 are each independently C1-C4 alkyl, in particular C10-C16 alkyldimethylamine oxides.
  • suitable amine oxides are N-cocoalkyl-N,N-dimethylamine oxide and N-tallowalkyl-N,N-dihydroxyethylamine oxide.
  • the at least one amine oxide is preferably selected from C12-16 amine oxides, particularly preferably from lower-chain C12-14 alkyl dimethyl amine oxides.
  • the at least one amine oxide is present at 0.1 to 20% by weight, preferably 0.3 to 10% by weight, more preferably at 0.5 to 3% by weight, based on the total weight of the dishwashing detergent .
  • the at least one further anionic, nonionic or zwitterionic surfactant is preferably at 0.1 to 45% by weight, preferably 0.5 to 40% by weight, more preferably at 1 to 25% by weight, based on the total weight of the dishwashing detergent.
  • alpha-olefin sulfonates are selected from C10-20 alpha-olefin sulfonates, more preferably from linear C10-20 alpha-olefin sulfonates. In particular it is selected from C12-14 alpha-olefin sulfonates; most preferably it is a linear C12-14 alpha olefin sulfonate.
  • the at least one alpha-olefin sulfonate is preferably present in an amount of 2.5 to 45% by weight, more preferably 3 to 30% by weight, particularly preferably 5 to 25% by weight, based on the total weight of the dishwashing detergent.
  • a suitable alpha-olefin sulfonate is commercially available, for example, under the trade name Bio- Terge® AS-40 from Stephan.
  • the at least one additional anionic surfactant is selected from ether sulfates, alkyl sulfates, and mixtures thereof.
  • Preferred ether sulfates are those of the formula (I) R1-O-(AO)n-SO3- X+ (I).
  • R1 is a linear or branched, substituted or unsubstituted alkyl radical, preferably a linear, unsubstituted alkyl radical, particularly preferably a fatty alcohol radical.
  • Preferred radicals R1 are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl radicals and mixtures thereof, the representatives with an even number of carbon atoms are preferred.
  • radicals R1 are derived from C12-C18 fatty alcohols, for example from coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol or from C10-C20 oxo alcohols.
  • X stands for a monovalent cation or the nth part of an n-valent cation, preference being given to the alkali metal ions and including Na+ or K+, with Na+ being extremely preferred.
  • Further cations X+ can be selected from NH4+, 1 ⁇ 2 Zn2+, 1 ⁇ 2 Mg2+, 1 ⁇ 2 Ca2+, 1 ⁇ 2 Mn2+, and mixtures thereof.
  • AO stands for an ethylene oxide (EO) or propylene oxide (PO) moiety, preferably for an ethylene oxide moiety.
  • the index n is an integer from 1 to 50, preferably from 1 to 20 and in particular from 2 to 10. n is very particularly preferably the numbers 2, 3, 4, 5, 6, 7 or 8.
  • alkyl sulfates which are not derived from fatty alcohols, of the formula R2-O-SO3- X+ (II).
  • R2 is a linear or branched, substituted or unsubstituted alkyl radical, preferably a linear, unsubstituted alkyl radical, particularly preferably a fatty alcohol radical.
  • Preferred radicals R2 are selected from decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl, eicosyl radicals and mixtures thereof, the representatives with an even number of carbon atoms are preferred. More preferably they are derived from C10-20 oxo alcohols.
  • X stands for a monovalent cation or the nth part of an n-valent cation, preference being given to the alkali metal ions and including Na+ or K+, with Na+ being extremely preferred.
  • Further cations X+ can be selected from NH4+, 1 ⁇ 2 Zn2+, 1 ⁇ 2 Mg2+, 1 ⁇ 2 Ca2+, 1 ⁇ 2 Mn2+, and mixtures thereof.
  • the at least one other nonionic surfactant is at from 0.1% to 20%, preferably from 0.5% to 10%, more preferably from 1% to 8% by weight based on the total weight of the dishwashing composition contain.
  • nonionic surfactants known for dishwashing detergents are suitable as further nonionic surfactants.
  • the at least one further nonionic surfactant is selected from alkoxylated fatty acid alkyl esters, polyhydroxy fatty acid amides, alkyl glycosides and alkoxylated alcohols and mixtures thereof.
  • nonionic surfactants are alkoxylated, preferably ethoxylated or ethoxylated and propoxylated, fatty acid alkyl esters, preferably having 1 to 4 carbon atoms in the alkyl chain.
  • Suitable surfactants are the polyhydroxy fatty acid amides known as PHFA.
  • alkyl glycosides of the general formula RO (G) x in which R is a primary straight-chain or methyl-branched, in particular methyl-branched in the 2-position, aliphatic radical having 8 to 22, preferably 12 to 18 carbon atoms and G is the symbol for a glucose unit with 5 or 6 carbon atoms, preferably glucose.
  • the degree of oligomerization x which indicates the distribution of monoglycosides and oligoglycosides, is any number between 1 and 10; x is preferably from 1.2 to 1.4.
  • the other nonionic surfactants are selected from the group of alkoxylated alcohols.
  • the nonionic surfactants used are preferably alkoxylated, advantageously ethoxylated, in particular primary alcohols preferably having 8 to 18 carbon atoms and an average of 1 to 12 moles of ethylene oxide (EO) or propylene oxide (PO) per mole of alcohol, in which the alcohol radical is linear or preferably in the 2nd -position can be methyl-branched or can contain linear and methyl-branched radicals in the mixture, such as are usually present in oxo alcohol radicals.
  • EO ethylene oxide
  • PO propylene oxide
  • alcohol ethoxylates with linear radicals from alcohols of natural origin with 12 to 18 carbon atoms for example from coconut, palm, tallow or oleyl alcohol, and an average of 2 to 8 moles of EO per mole of alcohol are preferred.
  • Preferred ethoxylated alcohols include, for example, C12-14 alcohols with 3 EO or 4 EO, C8-11 alcohol with 7 EO, C13-15 alcohols with 3 EO, 5 EO, 7 EO or 8 EO, C12-18 3 EO, 5 EO or 7 EO alcohols and mixtures of these such as mixtures of C12-14 alcohol with 3 EO and C12-18 alcohol with 5 EO.
  • the total amount of the surfactants, i.e. the surfactant system, based on the weight of the composition is from 2.5 to 70% by weight, preferably from 5 to 60% by weight, more preferably from 6 to 50% by weight.
  • the dishwashing detergent according to the present invention can also contain at least one additional ingredient selected from the group consisting of water, organic solvents, enzymes, additives to improve drainage and drying behavior, to adjust viscosity and/or for stabilization, UV stabilizers, perfume, Pearlizing agents, dyes, corrosion inhibitors, preservatives, bitter substances, organic salts, disinfectants, structuring polymers, defoamers, encapsulated ingredients, pH adjusters and additives that improve the feeling of the skin or care for it.
  • at least one additional ingredient selected from the group consisting of water, organic solvents, enzymes, additives to improve drainage and drying behavior, to adjust viscosity and/or for stabilization, UV stabilizers, perfume, Pearlizing agents, dyes, corrosion inhibitors, preservatives, bitter substances, organic salts, disinfectants, structuring polymers, defoamers, encapsulated ingredients, pH adjusters and additives that improve the feeling of the skin or care for it.
  • the dishwashing detergents according to the present invention are liquid and contain water as the main solvent, i.e. they are aqueous dishwashing detergents.
  • the water content of the aqueous composition according to the invention is usually 15 to 90% by weight, preferably 20 to 60% by weight.
  • organic solvents can be added to the dishwashing detergent.
  • Suitable organic solvents include monohydric or polyhydric alcohols, alkanolamines or glycol ethers, provided they are miscible with water in the specified concentration range.
  • the solvents are preferably selected from ethanol, n-propanol, i-propanol, butanols, glycol, propanediol, butanediol, methylpropanediol, glycerol, diglycol, propyldiglycol, butyldiglycol, hexylene glycol, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, Diethylene glycol ethyl ether, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, diprop
  • the dishwashing detergents described herein can also contain at least one enzyme, preferably a protease.
  • the proteases used are preferably alkaline serine proteases. They act as non-specific endopeptidases, which means that they hydrolyze any acid amide bonds that are inside peptides or proteins, thereby breaking down protein-containing soiling on the items to be cleaned. Their optimum pH is usually in the clearly alkaline range.
  • proteases that can be used in the compositions described herein are Subtilisin 309 or functional fragments/variants thereof and Bacillus lentus alkaline protease variants or variants thereof.
  • Subtilisin 309 is marketed under the trade name Savinase® by Novozymes A/S, Bagsvaerd, Denmark.
  • Optimized enzyme variants of the subtilisin 309 from Bacillus lentus are available under the trade names Blaze® and Ovozyme® from the company Novozymes, which represent a preferred embodiment of the invention.
  • the protease variants listed under the name BLAP® are derived from the alkaline protease from Bacillus lentus DSM 5483.
  • BLAP variants which, compared to the BLAP wt (wild-type) enzyme, counted according to BLAP wt, have at least one mutation on R99, in particular R99E or R99D, R99E being particularly preferred, and optionally at least one or two in addition , preferably all three of the amino acid substitutions S3T, V4I and V1991, particularly preferred are the BLAP variants, as in SeqID No. 4 or 5 of WO 2014/177430 are described.
  • the enzymes to be used can also be formulated together with accompanying substances, for example from fermentation.
  • the enzymes are preferably used as enzyme liquid formulation(s).
  • the proteases are not provided in the form of the pure protein but rather in the form of stabilized preparations that can be stored and transported.
  • These prepackaged preparations include, for example, by granulation, extrusion or Lyophilization obtained solid preparations or, especially in liquid or gel-like agents, solutions of the enzymes, advantageously as concentrated as possible, low in water and / or mixed with stabilizers or other auxiliaries.
  • the enzymes can be encapsulated for both the solid and the liquid dosage form, for example by spray drying or extrusion of the enzyme solution together with a preferably natural polymer, or in the form of capsules, for example those in which the enzymes are enclosed as in a set gel or in those of the core-shell type, in which an enzyme-containing core is coated with a water, air and/or chemical impermeable protective layer.
  • Additional active substances for example stabilizers, emulsifiers, pigments, bleaching agents or dyes, can also be applied in superimposed layers.
  • Such capsules are applied by methods known per se, for example by shaking or rolling granulation or in fluid-bed processes.
  • such granules for example due to the application of polymeric film formers, produce little dust and are stable in storage due to the coating.
  • Dishwashing detergents according to the invention can alternatively or in addition to the at least one protease contain one or more further enzymes, in particular from the following group: amylases, hemicellulases, cellulases, lipases and oxidoreductases.
  • the dishwashing detergent according to the invention particularly preferably also contains at least one amylase.
  • the amylase(s) is preferably an ⁇ -amylase.
  • the hemicellulase is preferably a ⁇ -glucanase, a pectinase, a pullulanase and/or a mannanase.
  • the cellulase is preferably a cellulase mixture or a one-component cellulase, preferably or predominantly an endoglucanase and/or a cellobiohydrolase.
  • the oxidoreductase is preferably an oxidase, in particular a choline oxidase, or a perhydrolase.
  • the enzymes mentioned can all be formulated as described above for the proteases.
  • the at least one enzyme preferably the at least one protease and/or at least one amylase, is in an amount of 0.01-1.6% by weight, preferably 0.05-1.2% by weight, based on the total weight of the dishwashing detergent, contained in the latter.
  • the enzyme(s) may be pre-formulated with enzyme stabilizers in an enzyme composition.
  • the enzyme protein usually makes up only a fraction of the total weight of the enzyme preparation.
  • Enzyme preparations used with preference contain between 0.1 and 40% by weight, preferably between 0.2 and 30% by weight, particularly preferably between 0.4 and 20% by weight and in particular between 0.8 and 10% by weight. % of enzyme protein.
  • an enzyme stabilizer may be included in an amount of 0.05-35%, preferably 0.05-10% by weight based on the total weight of the enzyme composition.
  • This enzyme composition can then be used in dishwashing detergents according to the invention, specifically in amounts which lead to the final concentrations in the dishwashing detergent indicated above. Suitable enzyme stabilizers are known in the art.
  • the agent according to the invention can accordingly additionally have one or more enzyme stabilizers.
  • the protein concentration can be determined using known methods, for example the BCA method (bicinchoninic acid; 2,2'-biquinolyl-4,4'-dicarboxylic acid) or the Biuret method.
  • the active protein concentration is determined via a titration of the active centers using a suitable irreversible inhibitor (for proteases, for example, phenylmethylsulfonyl fluoride (PMSF)) and determination of the residual activity (cf. M. Bender et al., J. Am. Chem. Soc. 88, 24 (1966), pp. 5890-5913 ).
  • a suitable irreversible inhibitor for proteases, for example, phenylmethylsulfonyl fluoride (PMSF)
  • the agent according to the invention can contain one or more additives from the group of polymers and builders, usually in an amount of 0.001 to 5% by weight, preferably 0.01 to 4% % by weight, in particular 0.1 to 3% by weight, particularly preferably 0.2 to 2% by weight, extremely preferably 0.5 to 1.5% by weight, for example 1% by weight.
  • Polymer thickeners in the sense of the present invention are the polyelectrolytes having a thickening effect polycarboxylates, preferably homo and copolymers of acrylic acid, especially acrylic acid copolymers such as acrylic acid-methacrylic acid copolymers, and the polysaccharides, especially heteropolysaccharides, and other customary thickening polymers.
  • Suitable polysaccharides or heteropolysaccharides are the polysaccharide gums, for example gum arabic, agar, alginates, carrageenans and their salts, guar, guar gum, tragacanth, gellan, ramsan, dextran or xanthan and their derivatives, for example propoxylated guar, as well as their mixtures.
  • polysaccharide thickeners such as starches or cellulose derivatives
  • starches or cellulose derivatives can be used as an alternative, but preferably in addition to a polysaccharide gum, for example starches of various origins and starch derivatives, for example hydroxyethyl starch, starch phosphate esters or starch acetates, or carboxymethyl cellulose or its sodium salt, methyl, ethyl, hydroxyethyl, Hydroxypropyl-, hydroxypropyl-methyl- or hydroxyethyl-methyl cellulose or cellulose acetate.
  • starches of various origins and starch derivatives for example hydroxyethyl starch, starch phosphate esters or starch acetates, or carboxymethyl cellulose or its sodium salt, methyl, ethyl, hydroxyethyl, Hydroxypropyl-, hydroxypropyl-methyl- or hydroxyethyl-methyl cellulose or cellulose acetate.
  • Acrylic acid polymers suitable as polymeric thickeners are, for example, high molecular weight homopolymers of acrylic acid crosslinked with a polyalkenyl polyether, in particular an allyl ether of sucrose, pentaerythritol or propylene (INCI Carbomer), which are also referred to as carboxyvinyl polymers.
  • a polyalkenyl polyether in particular an allyl ether of sucrose, pentaerythritol or propylene (INCI Carbomer), which are also referred to as carboxyvinyl polymers.
  • acrylic acid copolymers are the following acrylic acid copolymers: (i) Copolymers of two or more monomers from the group consisting of acrylic acid, methacrylic acid and their simple esters, preferably formed with C1-4 alkanols (INCI acrylates copolymer), which include, for example, the copolymers of methacrylic acid, butyl acrylate and methyl methacrylate ( CAS 25035 69 2 ) or of butyl acrylate and methyl methacrylate ( CAS 25852 37 3 ) belong; (ii) Crosslinked high molecular weight acrylic acid copolymers, which include, for example, the copolymers of C10-30 alkyl acrylates crosslinked with an allyl ether of sucrose or pentaerythritol with one or more monomers from the group consisting of acrylic acid, methacrylic acid and their simple esters, preferably formed with C1-4 alkanols ( INCI Acrylates/C10-30 Alkyl Acry
  • the content of polymeric thickener is usually not more than 8% by weight, preferably between 0.1 and 7% by weight, particularly preferably between 0.5 and 6% by weight, in particular between 1 and 5% by weight and most preferably between 1.5 and 4% by weight, for example between 2 and 2.5% by weight, based on the total weight of the dishwashing composition.
  • One or more dicarboxylic acids and/or their salts can be added to stabilize the agent according to the invention, particularly with a high surfactant content, particularly a composition of sodium salts of adipic, succinic and glutaric acid, such as those available under the trade name Sokalan® DSC is. It is advantageously used in amounts of 0.1 to 8% by weight, preferably 0.5 to 7% by weight, in particular 1.3 to 6% by weight and particularly preferably 2 to 4% by weight, based on the total weight of the dishwashing detergent.
  • the agent according to the invention is preferably free from dicarboxylic acid (salts).
  • one or more other - especially in hand dishwashing detergents - usual auxiliaries and additives, in particular UV stabilizers, perfume, pearlescent agents (INCI opacifying agents; for example glycol distearate, e.g. Cutina ® AGS from Cognis, or mixtures containing this, e.g the Euperlane ® from Cognis), dyes, corrosion inhibitors, preservatives (e.g.
  • bronopol the technical 2-bromo-2-nitropropane-1,3-diol, also known as bronopol ( CAS 52-51-7 ), which is commercially available, for example, as Myacide ® BT or as Boots Bronopol BT from Boots) or Acticide MBR 1 or Acticide CMB 2, organic salts, disinfectants, pH adjusters and additives that improve the feel of the skin or care for the skin (e.g.
  • dermatologically active substances such as vitamin A, vitamin B2, vitamin B12, vitamin C, vitamin E, D panthenol, sericerin, collagen partial hydrolyzate, various vegetable protein partial hydrolyzates, protein hydrolyzate fatty acid condensates, liposomes, cholesterol, vegetable and animal oils such as eg lecithin, soybean oil, etc., plant extracts such as eg aloe vera, azulene, witch hazel extracts, algae extracts, etc., allantoin, AHA complexes, glycerol, urea, quaternized hydroxyethyl cellulose) in amounts usually not exceeding 8% by weight based on the total weight of the dishwashing detergent.
  • Na xylene sulfonate can be used as an additive.
  • the pH of the agent according to the invention can be adjusted using conventional pH regulators, for example acids such as mineral acids or citric acid and/or alkalis such as sodium hydroxide or potassium hydroxide, with a range of 4 to 9 being possible, particularly if hand tolerance is desired.
  • acids such as mineral acids or citric acid
  • alkalis such as sodium hydroxide or potassium hydroxide
  • the agent according to the invention can contain one or more buffer substances (INCI Buffering Agents), usually in amounts of 0.001 to 5% by weight, preferably 0.005 to 3% by weight, in particular 0 0.01 to 2% by weight, particularly preferably 0.05 to 1% by weight, extremely preferably 0.1 to 0.5% by weight, for example 0.2% by weight.
  • Buffer substances which are at the same time complexing agents or even chelating agents (chelators, INCI chelating agents) are preferred.
  • Particularly preferred buffer substances are citric acid or citrates, in particular sodium and potassium citrates, for example trisodium citrate ⁇ 2H2O and tripotassium citrate ⁇ H2O.
  • compositions are:
  • Table 1 The example compositions shown in Table 1 were provided from a base formulation comprising 6.4% by weight anionic surfactant and 1.6% amine oxide surfactant. The total amount of surfactant is therefore 8% by weight. The formulation also contained smaller amounts of fragrances and colorings as well as protease and amylase enzymes. Table 1 example Reference sign EtOH CS AM / LMtotal NaCl C1 10 0 0.6 13 4.4 E1 50 1.5 0.6 4 6.7 E2 30 0.75 0.6 6 5.27 E3 40 1.125 0.6 5 6 E4 80 1.5 0.6 4 7.65 E5 70 1.5 0.6 4 7.2
  • compositions result from the values in Table 1 and the basic recipe.
  • the solvent includes ethanol and cumene sulfonate, CS.
  • the table also shows the ratio of the total amount of surfactant to the total amount of solvent.
  • the viscosity curves are in figure 1 shown.
  • the example formulations E1 to E5 according to the invention show that the compositions according to the invention have in particular a good viscosity profile in the skin-friendly pH range of at least 7.
  • the viscosities of the compositions are such that the compositions are perceived by the consumer as being of high quality and the viscosity exhibits a relatively small/stable change as a function of the pH value within the relevant pH range.
  • the homogeneous mixing of the components by means of stirring tools was sufficiently well possible.
  • the comparison formulation C1 showed an unsuitable viscosity profile. It is true that high viscosity values could be achieved. In contrast to the example formulations according to the invention, however, these were not sufficiently constant/stable as a function of the pH. The production process of such a composition is made considerably more difficult or even impossible because of the viscosity peaks, since adequate mixing of the composition using stirring tools is prevented. So the pH value is adjusted at an early stage, in particular before the solvent is added, there is a risk that the composition can no longer be mixed and the energy input increases significantly. Adjusting the pH value before adding inorganic salt and before adding solvent would be possible in view of the low viscosity at this point in time, but is unsuitable since the pH value changes significantly as a result of the addition of the salt.
  • composition E2 has a slight viscosity peak overall.
  • the ratio of total surfactant content to solvent is 6. Therefore, according to a preferred embodiment, a ratio of total surfactant content to solvent is described which is less than 10, in particular 4 to 5, as is the case in Examples E1, E3, E4 and E5 is.
  • the process utilizes the good viscosity profile which is achieved through the interaction of inorganic salt and solvent at pH values of around 7, it being essential that the pH value is adjusted after the solvent has been metered in.
  • Example compositions at higher total surfactant levels were provided from a base formulation comprising 16% by weight anionic surfactant and 4% amine oxide surfactant. The total amount of surfactant is therefore 20% by weight.
  • the formulation also contained smaller amounts of fragrances and colorings as well as protease and amylase enzymes.
  • compositions result from the values in Table 2 and the basic recipe.
  • the solvent includes ethanol and cumene sulfonate, CS.
  • the table also shows the ratio of the total amount of surfactant to the total amount of solvent.
  • the viscosity curves are in figure 2 shown.
  • the comparison formulation C2 showed an even more pronounced viscosity peak than in the compositions with lower total amounts of surfactants C1.
  • the problems already presented apply particularly to higher total surfactant contents.
  • the composition E6 according to the invention is characterized by a particularly stable viscosity profile. In comparison to the formulations E1 to E5 with a lower total surfactant content, even better stabilization of the viscosity is achieved.
  • the advantageous stabilization of the viscosity curve takes place in particular at higher total amounts of surfactants of at least 12% by weight.
  • the ratio of total surfactant content to solvent is also preferably less than 10, in particular between 4 and 6, more preferably 4 or 5.

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EP21177323.9A 2021-06-02 2021-06-02 Procédé de fabrication de détergent pour le lavage manuel de la vaisselle à viscosité modifiée Pending EP4098728A1 (fr)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070309A (en) * 1976-07-27 1978-01-24 The Procter & Gamble Company Detergent composition
EP0476212A1 (fr) * 1990-09-17 1992-03-25 The Procter & Gamble Company Composition détergente liquide
EP1111031A1 (fr) * 1999-12-22 2001-06-27 The Procter & Gamble Company Composition nettoyante
WO2012082096A1 (fr) * 2010-12-13 2012-06-21 Colgate-Palmolive Company Composition de nettoyage concentrée à diluer
WO2014177430A1 (fr) 2013-04-30 2014-11-06 Henkel Ag & Co. Kgaa Produit détergent contenant des protéases
EP3670637A1 (fr) * 2018-12-18 2020-06-24 Henkel AG & Co. KGaA Régulation de la viscosité dans les agents de rinçage à la main

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070309A (en) * 1976-07-27 1978-01-24 The Procter & Gamble Company Detergent composition
EP0476212A1 (fr) * 1990-09-17 1992-03-25 The Procter & Gamble Company Composition détergente liquide
EP1111031A1 (fr) * 1999-12-22 2001-06-27 The Procter & Gamble Company Composition nettoyante
WO2012082096A1 (fr) * 2010-12-13 2012-06-21 Colgate-Palmolive Company Composition de nettoyage concentrée à diluer
WO2014177430A1 (fr) 2013-04-30 2014-11-06 Henkel Ag & Co. Kgaa Produit détergent contenant des protéases
EP3670637A1 (fr) * 2018-12-18 2020-06-24 Henkel AG & Co. KGaA Régulation de la viscosité dans les agents de rinçage à la main

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
M. BENDER ET AL., J. AM. CHEM. SOC., vol. 88, no. 24, 1966, pages 5890 - 5913

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