WO2012168118A1 - Détergent vaisselle protégeant l'argenterie - Google Patents

Détergent vaisselle protégeant l'argenterie Download PDF

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Publication number
WO2012168118A1
WO2012168118A1 PCT/EP2012/060108 EP2012060108W WO2012168118A1 WO 2012168118 A1 WO2012168118 A1 WO 2012168118A1 EP 2012060108 W EP2012060108 W EP 2012060108W WO 2012168118 A1 WO2012168118 A1 WO 2012168118A1
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WO
WIPO (PCT)
Prior art keywords
acid
dishwashing detergent
machine dishwashing
detergent according
weight
Prior art date
Application number
PCT/EP2012/060108
Other languages
German (de)
English (en)
Inventor
Thomas Eiting
Nina Mussmann
Thorsten Bastigkeit
Konstantin Benda
Arnd Kessler
Clarissa MAISEY
Dominique SCHUL
Original Assignee
Henkel Ag & Co. Kgaa
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
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Application filed by Henkel Ag & Co. Kgaa filed Critical Henkel Ag & Co. Kgaa
Priority to EP12723718.8A priority Critical patent/EP2718414A1/fr
Publication of WO2012168118A1 publication Critical patent/WO2012168118A1/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
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/32—Organic compounds containing nitrogen
    • C11D7/3281—Heterocyclic 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
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3769—(Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
    • C11D3/3776—Heterocyclic compounds, e.g. lactam
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/025—Cleaning or pickling metallic material with solutions or molten salts with acid solutions acidic pickling pastes
    • C11D2111/16—

Definitions

  • the present application describes automatic dishwashing detergents as well as mechanical detergents
  • Dishwashing detergents are available to the consumer in a variety of forms.
  • the automatic dishwashing detergents have gained great importance with the spread of household dishwashers. These automatic dishwashing detergents are the consumer
  • One of the major objectives of the machine cleaners manufacturers is to improve the cleaning and rinse performance of these compositions, with more emphasis being placed recently on the cleaning and rinse performance in low temperature or reduced water consumption cleaning cycles.
  • the means advantageously fulfill additional functions.
  • Dishwashing problems can occur with silverware, for example. Often, especially when using strong bleach, the silver cutlery oxidizes during dishwashing and / or it starts and then has to be polished, whereby the polishing itself can also be costly.
  • special silver protectants such as triazole compounds, may facilitate polishing of the silverware, but does not prevent tarnishing of the silverware by these silver protectants.
  • This application was therefore based on the object to provide a machine dishwashing detergent having improved silver protection properties, wherein in particular the oxidation and / or tarnishing of the silver cutlery should be prevented or at least reduced and / or the polishing of the tarnished silver cutlery should be facilitated.
  • the improved silver protection properties should preferably also be achieved in low-temperature cleaning cycles, ie in cleaning processes with Spülflottentemperaturen of 50 ° C or below.
  • the object of the invention was achieved by a dishwashing detergent, in addition to a Triazole compound additionally contains a polymer comprising N-containing heterocycles.
  • the polymer is preferably a polyvinylpyrrolidone.
  • a first object of the present invention are therefore automatic dishwashing detergents, characterized in that they comprise at least one triazole compound and at least one polymer comprising N-containing heterocycles, wherein polymer with N-containing heterocycles is preferably a polyvinylpyrrolidone ,
  • the polymer, in particular the polyvinylpyrrolidone, can be branched or linear. In a preferred
  • the polymer in particular the polyvinylpyrrolidone, in branched form, in particular in the form of particles before.
  • the polymer particles in particular the
  • Polyvinylpyrrolidone particles preferably have a middle
  • the present invention also provides a machine dishwashing process using the dishwashing compositions according to the invention, in particular for protecting the treated silverware, in particular for preventing oxidation and / or tarnishing of the treated silverware and / or for improving the polishability of the treated silverware.
  • the dishwashing process is preferably carried out at a liquor temperature below 60 ° C, preferably below 50 ° C.
  • Another object of the present invention is also the use of a combination of a triazole compound and a polymer containing N-containing heterocycles, as
  • Silver protection agents in particular for preventing the oxidation and / or start-up of silverware and / or for facilitating the polishing of silverware, in particular in automatic dishwashing, wherein the polymer is preferably a
  • Polyvinylpyrrolidone acts.
  • a combination of triazole compound and N-containing heterocycle-containing polymer in this case preferably a dishwashing detergent according to the invention is used.
  • the present application relates to automatic dishwashing detergents.
  • Automatic dishwashing detergents are compositions which can be used to clean soiled dishes in a dishwasher automatic dishwashing process.
  • the automatic dishwasher detergents according to the invention differ, for example, from the machine rinse aid agents, which are always used in combination with automatic dishwashing detergents and do not develop their own cleaning action.
  • the automatic dishwashing agents according to the invention can be in solid or liquid form. In a preferred embodiment, they are in powdered, granulated or compressed form.
  • the automatic dishwashing compositions according to the invention are present in a particularly preferred embodiment as a shaped body, preferably as a compact, in particular as a tablet. However, they may also be present in combination with other forms of supply, in particular in combination with solid forms such as powders, granules or extrudates or in combination with liquid formulations based on water and / or organic solvents.
  • Inventive agents can be formulated as single-phase or multi-phase products.
  • Machine dishwashing detergents with one, two, three or four phases are particularly preferred.
  • Machine dishwashing detergents, characterized in that they are in the form of a prefabricated dosing unit with two or more phases, are particularly preferred.
  • Particularly preferred are in particular two- or multi-phase tablets, for example
  • Two-layer tablets in particular two-layer tablets with a trough and a molded body located in the trough.
  • Automatic dishwasher detergents according to the invention are preferably prefabricated to form metering units. These metering units preferably comprise the necessary for a cleaning cycle amount of washing or cleaning-active substances. Preferred metering units have a weight between 12 and 30 g, preferably between 14 and 26 g and in particular between 15 and 22 g.
  • the volume of the aforementioned metering units and their spatial form are selected with particular preference so that a metering of the prefabricated units on the
  • the volume of the dosing unit is therefore preferably between 10 and 35 ml, preferably between 12 and 30 ml and in particular between 15 and 25 ml.
  • Metering units are particularly preferred to have a water-soluble coating.
  • Dishwashing agents comprise at least one polymer containing N-containing
  • heterocycles Preferably, at least 20%, in particular at least 50%, particularly preferably at least 80%, very particularly preferably all of the monomer units present in the polymer have an N-containing heterocycle.
  • N-containing heterocycle In the N-containing
  • Heterocycle is preferably a 5- or 6-membered ring which is unsaturated, partially may be saturated or fully saturated, with fully saturated heterocycles being particularly preferred. It is further preferred that the heterocycle comprises an N atom and at least one carbonyl group, wherein the carbonyl group is preferably arranged in the alpha position to the N atom. In a particularly preferred embodiment, the heterocycle is a pyrrolidone which is preferably bonded to the backbone of the polymer via the N atom. In a preferred embodiment according to the invention, the polymer is accordingly a polymer in which at least 20%, preferably at least 50%, in particular at least 80% of the monomer units of the polymer
  • Pyrrolidone units have.
  • the polymer is a polyvinylpyrrolidone.
  • Dishwashing agents preferred according to the invention in particular shaped bodies according to the invention, comprise polyvinylpyrrolidone in the form of polyvinylpyrrolidone particles.
  • Polyvinylpyrrolidone particles have the additional advantage that they facilitate the disintegration of the moldings and thus additionally serve as disintegration aids or tablet disintegrating agents.
  • the function of the PVP particles is not limited solely to the improved silver protection.
  • Polyvinylpyrrolidon particles having an average particle diameter of 100 to 150 ⁇ , in particular with an average particle diameter of 1 10 to 130 ⁇ , use.
  • average particle diameter or “average diameter” is meant 50 particle diameter in the present invention, the volume mean D, which can be determined by conventional methods.
  • the volume average D 50 particle diameter is that point in the particle size at which 50 % By volume of the particles have a smaller diameter and 50% by volume of the particles have a larger diameter
  • particle diameters can be determined by means of dynamic light scattering, which is usually carried out on dilute suspensions, e.g. 0.01 to 1 wt .-% particles are carried out.
  • the PVP particles used not only a middle
  • compacts having a hardness in the range from 150 to 250 N, in particular in the range from 200 to 230 N, which in addition is a particularly good one can preferably be obtained by using a pressing force of 40 to 65 kN, more preferably 48 to 60 kN Have trickle behavior.
  • the granules can thus preferably be pressed with relatively low pressing force into compact materials having a relatively high hardness, which moreover preferably have a very good trickling behavior. Accordingly, it is conversely advantageous for the production of compact materials of lower hardness preferably a lower pressing force must be used, as for the production of conventional compactates.
  • Shaped body in particular a Kompaktat, especially a cleaning tablet, which contains a mixture of polyvinylpyrrolidone particles having a mean particle diameter of 100 to 150 ⁇ , in particular from 1 10 to 130 ⁇ , and at least one benzotriazole compound and preferably a particular has good trickle behavior.
  • the polymer comprising N-containing heterocycles, in particular the polyvinylpyrrolidone is preferably present in compositions according to the invention in an amount of 0.1 to 5% by weight, more preferably in an amount of 0.2 to 3% by weight all in an amount of 0.3 to 1, 8 wt .-%, wherein the polymer, in particular the polyvinylpyrrolidone, in a preferred embodiment as described above in particulate form.
  • disintegrants usually that they increase their volume upon ingress of water, whereby on the one hand increases the intrinsic volume (swelling), but on the other hand by the release of gases, a pressure can be generated, which can disintegrate the tablet into smaller particles .
  • further or alternative disintegrants may be present in dishwashing compositions according to the invention, for example carbonate / citric acid systems or carbonate in combination with other organic acids, synthetic polymers or natural polymers or modified natural substances such as cellulose and starch and theirs Derivatives and alginates or casein derivatives.
  • gas-evolving effervescent systems can also be used as further or alternative disintegrants.
  • Preferred effervescent systems consist of at least two constituents which react with one another to form gas, for example alkali metal carbonate and / or bicarbonate and an acidifier which is suitable for liberating carbon dioxide from the alkali metal salts in aqueous solution.
  • An acidifying agent that releases carbon dioxide from the alkali salts in aqueous solution is, for example, citric acid.
  • the further disintegration aids are, if used, preferably in amounts of 0.1 to 10 wt .-%, preferably 0.2 to 5 wt .-% and in particular 0.5 to 2 wt .-%, each based on the total weight of Dishwashing agent, used.
  • the shaped body according to the invention contains PVP particles and, apart from the PVP particles, no further disintegration auxiliaries.
  • Dishwashing compositions according to the invention contain as further constituent at least one triazole compound, preferably an aromatically stabilized triazole compound, more preferably benzotriazole and / or tolyltriazole.
  • the triazole compound is in the invention
  • Dishwashing agents preferably in an amount of 0.01 to 1 wt .-%, particularly preferably in an amount of 0.1 to 0.5 wt .-%, included.
  • Preferred automatic dishwashing agents according to the invention contain as further constituent at least one bleaching agent, oxygen bleaching agents being preferred.
  • oxygen bleaching agents being preferred.
  • sodium percarbonate, sodium perborate tetrahydrate and sodium perborate monohydrate are of particular importance.
  • Further bleaches which can be used are, for example, peroxypyrophosphates, citrate perhydrates and H 2 O 2 -producing peracidic salts or peracids, such as perbenzoates, peroxophthalates,
  • Diperazelaic acid phthaloiminoperacid or diperdodecanedioic acid.
  • bleaching agents from the group of organic bleaching agents can also be used.
  • Typical organic bleaching agents are the diacyl peroxides, e.g. Dibenzoyl.
  • Other typical organic bleaches are the peroxyacids, examples of which include the alkyl peroxyacids and the aryl peroxyacids.
  • Preferred automatic dishwashing agents according to the invention are characterized in that they contain an oxygen bleaching agent, preferably sodium percarbonate, more preferably a coated sodium percarbonate.
  • an oxygen bleaching agent preferably sodium percarbonate, more preferably a coated sodium percarbonate.
  • the weight fraction of the bleaching agent, based on the total weight of the washing or cleaning agent, is in preferred
  • Embodiments between 2 and 30 wt .-%, preferably between 4 and 20 wt .-% and in particular between 6 and 15 wt .-%.
  • Machine dishwashing detergents according to the invention may further contain bleach activators.
  • bleach activators These compounds give under perhydrolysis aliphatic peroxycarboxylic acids having preferably 1 to 10 carbon atoms, in particular 2 to 4 carbon atoms, and / or optionally substituted perbenzoic acid.
  • Suitable substances are the O- and / or N-acyl groups of the mentioned carbon atom number and / or optionally substituted Wear benzoyl groups.
  • TED Tetraacetylethylenediamine
  • Automatic dishwashing detergents characterized in that they contain as bleach activator a bleach activator from the group of the acetylated amines, preferably tetraacetylenediamine (TAED), are preferred according to the invention.
  • TAED tetraacetylenediamine
  • Machine dishwashing detergents preferably at least one
  • Bleach catalyst These substances are bleach-enhancing transition metal salts or transition metal complexes such as, for example, Mn, Fe, Co, Ru or Mo saline complexes or carbonyl complexes. Mn, Fe, Co, Ru, Mo, Ti, V and Cu complexes with N-containing tripod ligands and Co, Fe, Cu and Ru ammine complexes can also be used as bleach catalysts.
  • transition metal salts or transition metal complexes such as, for example, Mn, Fe, Co, Ru or Mo saline complexes or carbonyl complexes.
  • Mn, Fe, Co, Ru, Mo, Ti, V and Cu complexes with N-containing tripod ligands and Co, Fe, Cu and Ru ammine complexes can also be used as bleach catalysts.
  • complexes of manganese in the oxidation state II, III, IV or V are used, which preferably one or more macrocyclic (s) ligand (s) with the
  • bleach catalyst in the compositions of the invention, which as macromolecular ligands 1, 4,7-trimethyl-1, 4,7-triazacyclononan (Me-TACN), 1, 4,7-triazacyclononane (TACN ), 1, 5,9-trimethyl-1, 5,9-triazacyclododecane (Me-TACD), 2-methyl-1, 4,7-trimethyl-1, 4,7-triazacyclononane (Me / Me-TACN) and or 2-methyl-1,4,7-triazacyclononane (Me / TACN).
  • suitable bleach catalyst s in the compositions of the invention, which as macromolecular ligands 1, 4,7-trimethyl-1, 4,7-triazacyclononan (Me-TACN), 1, 4,7-triazacyclononane (TACN ), 1, 5,9-trimethyl-1, 5,9-triazacyclododecane (Me-TACD), 2-methyl-1, 4,7-trimethyl-1, 4,7-triazacyclonon
  • Automatic dishwashing detergent characterized in that it further comprises a
  • Bleach catalyst selected from the group of bleach-enhancing transition metal salts and transition metal complexes, preferably from the group of complexes of manganese with 1, 4,7-trimethyl-1,4,7-triazacyclononane (Me 3 -TACN) or 1, 2,4,7- tetramethyl-1, 4, 7-triazacyclononane (Me 4 - TACN) are preferred according to the invention, since by the aforementioned
  • Bleaching catalysts in particular the cleaning result can be significantly improved.
  • Central atoms Mn and Co are in conventional amounts, preferably in an amount up to 5 wt .-%, in particular from 0.0025 wt .-% to 1 wt .-% and particularly preferably from
  • bleach catalyst-containing agent used. In special cases, however, more can be done
  • Bleaching catalyst can be used.
  • Preferred machine dishwasher detergents according to the invention contain as further constituent at least one anionic polymer.
  • Preferred anionic polymers here are the
  • copolymeric polycarboxylates and the copolymeric polysulfonates.
  • the proportion by weight of the anionic polymer in the total weight of the inventive automatic dishwashing agent in a preferred embodiment is from 0.1 to 20% by weight, preferably from 0.5 to 18% by weight, particularly preferably from 1.0 to 15% by weight. % and in particular from 4 to 14 wt .-%.
  • Machine dishwashing detergents characterized in that the copolymeric anionic polymer is selected from the group of hydrophobically modified polycarboxylates and polysulfonates is a particularly preferred object, as represented by the hydrophobic
  • Drying properties of these agents can be achieved with low deposit formation.
  • the copolymers may have two, three, four or more different monomer units.
  • Preferred copolymeric polysulfonates contain sulfonic acid group-containing (s)
  • Monomer (s) at least one monomer from the group of unsaturated carboxylic acids.
  • unsaturated, straight-chain or branched hydrocarbon radical having 1 to 12 carbon atoms are particularly preferred unsaturated carboxylic acids.
  • unsaturated carboxylic acids are acrylic acid, methacrylic acid, ethacrylic acid, ⁇ -chloroacrylic acid, ⁇ -cyanoacrylic acid, crotonic acid, ⁇ -phenyl-acrylic acid, maleic acid,
  • Copolymers of acrylic acid with methacrylic acid and of acrylic acid or methacrylic acid with maleic acid are particularly preferably used according to the invention as copolymeric polycarboxylates.
  • Copolymers of acrylic acid with maleic acid which contain 50 to 90% by weight of acrylic acid and 50 to 10% by weight of maleic acid have proven to be particularly suitable.
  • Their relative molecular weight, based on free acids, is generally from 2000 to 70000 g / mol, preferably from 20,000 to 50,000 g / mol and in particular from 30,000 to 40,000 g / mol.
  • Particularly preferred monomers containing sulfonic acid groups are 1-acrylamido-1-propanesulfonic acid, 2-acrylamido-2-propanesulfonic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid, 2-methacrylamido-2-methyl-1-propanesulfonic acid, 3 Methacrylamido-2-hydroxypropanesulfonic acid, allylsulfonic acid, methallylsulfonic acid, allyloxybenzenesulfonic acid, methallyloxybenzenesulfonic acid, 2-hydroxy-3- (2-propenyloxy) propanesulfonic acid, 2-methyl-2-propenylsulfonic acid, styrenesulfonic acid, vinylsulfonic acid, 3-sulfopropyl acrylate, 3-sulfo - Propylmethacrylat, sulfomethacrylamide, sulfomethylmethacrylamide and mixtures of said acids or their water-
  • the sulfonic acid groups may be wholly or partially in neutralized form, i. the acidic acid of the sulfonic acid group in some or all sulfonic acid groups can be exchanged for metal ions, preferably alkali metal ions and in particular for sodium ions.
  • metal ions preferably alkali metal ions and in particular for sodium ions.
  • the monomer distribution of the copolymers preferably used according to the invention in the case of copolymers containing only monomers containing carboxylic acid groups and monomers containing sulfonic acid groups is preferably from 5 to 95% by weight, more preferably from 50 to 90% by weight of the sulfonic acid group-containing monomer. % and the share of
  • the molar mass of the sulfo copolymers preferably used according to the invention can be varied in order to adapt the properties of the polymers to the desired end use.
  • Preferred automatic dishwasher detergents are characterized in that the copolymers have molar masses of from 2000 to 200,000 gmol 1 , preferably from 4000 to 25,000 gmol 1 and in particular from 5000 to 15,000 gmol -1 .
  • the copolymers include besides
  • Carboxyl-containing monomer and sulfonic acid-containing monomer further at least one nonionic, preferably hydrophobic monomer.
  • the use of these hydrophobically modified polymers has made it possible in particular to improve the rinse aid performance of automatic dishwashing detergents according to the invention.
  • Automatic dishwashing detergent characterized in that the automatic dishwashing detergent comprises as anionic copolymer a copolymer comprising
  • nonionic monomer (s) contains are preferred according to the invention.
  • nonionic monomers are preferably monomers of the general formula
  • R (R 2 ) C C (R 3 ) -XR 4 used, in which R to R 3 are independently -H, -CH 3 or -C 2 H 5 , X is an optional spacer group selected is from -CH 2 -, -C (0) 0- and -C (0) -NH-, and R 4 is a straight or branched chain saturated alkyl radical having 2 to 22 carbon atoms or an unsaturated, preferably aromatic radical having 6 to 22 carbon atoms.
  • nonionic monomers are butene, isobutene, pentene, 3-methylbutene, 2-methylbutene, cyclopentene, hexene, hexene-1, 2-methylpentene-1, 3-methylpentene-1, cyclohexene, methylcyclopentene, cycloheptene, methylcyclohexene, 2,4 , 4-trimethylpentene-1, 2,4,4-trimethylpentene-2,3,3-dimethylhexene-1, 2,4-dimethylhexene-1, 2,5-dimethlyhexene-1,3,5-dimethylhexene-1,4 , 4-dimethylhexane-1, ethylcyclohexyn, 1-octene, ⁇ -olefins having 10 or more carbon atoms such as 1-decene, 1-dodecene, 1-hexadecene, 1-octadecene and C
  • dishwashing agents further comprise at least one nonionic surfactant of the general formula R 0 (AlkO) x M (OAlk) y OR 2 , where R and R 2 independently of one another represent a branched or unbranched, saturated or unsaturated, optionally hydroxylated alkyl radical with 4 to 22 carbon atoms;
  • Alk is a branched or unbranched alkyl radical having 2 to 4 carbon atoms
  • x and y independently represent values between 1 and 70;
  • M is an alkyl radical from the group CH 2 , CHR 3 , CR 3 R 4 , CH 2 CHR 3 and CHR 3 CHR 4 , where R 3 and R 4 independently of one another are a branched or unbranched, saturated or unsaturated alkyl radical having 1 to 18 carbon atoms.
  • Dishwashing agent here as a nonionic surfactant, a surfactant of the general formula
  • R is -CH (OH) CH 2 -O (CH 2 CH 2 O) x CH 2 CHR (OCH 2 CH 2 ) y O-CH 2 CH (OH) -R 2 where R, R and R 2 independently represent an alkyl or alkenyl radical having 6 to 22 carbon atoms;
  • - x and y independently represent values between 1 and 40.
  • R is a linear, saturated alkyl radical having 8 to 16 carbon atoms, preferably 10 to 14 carbon atoms, and n and m independently of one another have values of 20 to 30.
  • Corresponding compounds can be obtained, for example, by reaction of alkyldiols HO-CHR-CH 2 -OH with ethylene oxide, followed by reaction with an alkyle epoxide to close the free OH functions to form a dihydroxy ether.
  • automatic dishwasher detergents according to the invention contain as nonionic surfactant a surfactant of the general formula
  • R and R 2 independently represent an alkyl or alkenyl radical having 4 to 22 carbon atoms
  • R 3 and R 4 independently of one another are H or an alkyl radical or alkenyl radical having 1 to 18 carbon atoms and
  • - x and y independently represent values between 1 and 40.
  • the weight fraction of the nonionic surfactant of the general formula R 0 (AlkO) x M (OAlk) y OR 2 in the total weight of the inventive automatic dishwashing agent in a preferred embodiment is between 0.05 and 10% by weight, preferably between 0, 1 and 8 Wt .-%, preferably between 0.5 and 5 wt .-% and in particular between 1 and 3 wt .-%.
  • Dishwashing agents according to the invention furthermore preferably contain builder (s) and enzyme (s) to ensure their cleaning action.
  • automatic dishwashing agents according to the invention preferably contain one or more builders.
  • the proportion by weight of the builders in the total weight of automatic dishwashing detergents according to the invention is preferably from 15 to 80% by weight and in particular from 20 to 70% by weight.
  • the builders include in particular carbonates, phosphates, citrates, organic cobuilders and silicates.
  • phosphate Preference is also the use of phosphate.
  • the alkali metal phosphates have, with particular preference of pentasodium or.
  • Pentakaliumtriphosphat sodium or potassium tripolyphosphate
  • Alkalimetallphosphate is the summary term for the alkali metal (especially sodium and potassium) salts of various phosphoric acids in which one
  • Metaphosphoric acids (HP0 3 ) n and orthophosphoric acid H 3 P0 4 can distinguish in addition to higher molecular weight representatives.
  • the phosphates combine several advantages: they act as
  • Alkaline carriers prevent limescale deposits on machine parts or Kalkinkrustationen in tissues and also contribute to the cleaning performance.
  • phosphates are the pentasodium triphosphate, Na 5 P 3 Oi 0 (sodium tripolyphosphate) and the corresponding potassium salt Pentakaliumtriphosphat, K5P3O-10 (potassium tripolyphosphate).
  • the pentasodium triphosphate Na 5 P 3 Oi 0 (sodium tripolyphosphate)
  • the corresponding potassium salt Pentakaliumtriphosphat K5P3O-10 (potassium tripolyphosphate).
  • phosphates are used as washing or cleaning substances in automatic dishwasher detergents in the context of the present application, these contain phosphate (s), preferably alkali metal phosphate (s), particularly preferably pentasodium or Pentakaliumtriphosphat (sodium or potassium tripolyphosphate), in amounts of 5 to 60 wt .-%, preferably from 15 to 45 wt .-% and in particular from 20 to 40 wt .-%, each based on the weight of the automatic dishwashing detergent.
  • phosphate preferably alkali metal phosphate (s), particularly preferably pentasodium or Pentakaliumtriphosphat (sodium or potassium tripolyphosphate)
  • organic co-builders are polycarboxylates / polycarboxylic acids, polymeric carboxylates, aspartic acid, polyacetals, dextrins and organic cobuilders. These classes of substances are described below.
  • Useful organic builders are, for example, the polycarboxylic acids which can be used in the form of the free acid and / or their sodium salts, polycarboxylic acids meaning those carboxylic acids which carry more than one acid function.
  • these are citric acid, adipic acid, succinic acid, glutaric acid, malic acid, tartaric acid,
  • NTA nitrilotriacetic acid
  • the free acids also typically have the property of an acidifying component and thus also serve to set a lower and milder pH of detergents or cleaners.
  • citric acid, succinic acid, glutaric acid, adipic acid, gluconic acid and any desired mixtures of these can be mentioned here.
  • Machine dishwasher detergents contain citrate as one of their essential builders.
  • Machine dishwashing detergents characterized in that they contain 2 to 40% by weight, preferably 5 to 30% by weight and in particular 7 to 20% by weight citrate, are preferred according to the invention.
  • the citrates are preferably used in combination with carbonates and / or bicarbonate.
  • Preferred automatic dishwasher detergents are therefore characterized by a builder combination of phosphate and carbonate / bicarbonate or of citrate and carbonate / bicarbonate (see Tables 1a and 1b below).
  • builder combinations of phosphate, citrate and carbonate / bicarbonate can be realized.
  • the dishwashing detergent contains at least two builders from the group of the phosphates, carbonates and citrates, the weight fraction of these builders, based on its total weight of the automatic dishwashing agent, preferably from 5 to 80% by weight, preferably 15 to 75 wt .-% and in particular 30 to 70 wt .-% is.
  • the combination of two or more builders has proved to be advantageous for the cleaning and rinsing performance of automatic dishwasher detergents according to the invention.
  • polymeric polycarboxylates for example the alkali metal salts of polyacrylic acid or polymethacrylic acid, for example those having a relative molecular mass of 500 to 70,000 g / mol.
  • Suitable polymers are, in particular, polyacrylates which preferably have a molecular weight of 2,000 to 20,000 g / mol. Because of their superior solubility, the short-chain polyacrylates, which have molar masses of from 2000 to 10000 g / mol, and particularly preferably from 3000 to 5000 g / mol, may again be preferred from this group.
  • the content of the automatic dishwashing agents on (homo) polymeric polycarboxylates n is preferably 0.5 to 20% by weight and in particular 3 to 10% by weight.
  • Inventive automatic dishwashing agents as a builder crystalline tikformige silicates of general formula NaMSi x 0 2x + i ⁇ y H 2 0 wherein M is sodium or hydrogen, x is a number from 1, 9 to 22, preferably from 1: 9 to 4, wherein particularly preferred values for x are 2, 3 or 4, and y is a number from 0 to 33, preferably from 0 to 20.
  • amorphous sodium silicates with a Na 2 O: SiO 2 modulus of from 1: 2 to 1: 3.3, preferably from 1: 2 to 1: 2.8 and in particular from 1: 2 to 1: 2.6, which preferably delayed release and have secondary washing properties.
  • the content of silicates is limited to amounts below 10% by weight, preferably below 5% by weight and in particular below 2% by weight.
  • Particularly preferred automatic dishwasher detergents according to the invention are silicate-free.
  • MGDA methylglycinediacetic acid
  • GLDA glutamic acid N, N-diacetic acid
  • the agents according to the invention may contain alkali metal hydroxides.
  • These alkali carriers are preferred in the cleaning agents only in small amounts, preferably in amounts below 10 wt .-%, preferably below 6 wt .-%, preferably below 5 wt .-%, particularly preferably between 0.1 and 5 wt .-% and in particular between 0.5 and 5 wt .-%, each based on the total weight of
  • Dishwashing agents preferably comprise enzyme (s) as a further constituent.
  • enzyme include in particular proteases, amylases, lipases, hemicellulases, cellulases, perhydrolases or oxidoreductases, and preferably mixtures thereof.
  • These enzymes are basically of natural origin; Starting from the natural molecules, improved variants are available for use in detergents or cleaning agents, which are preferably used accordingly.
  • Detergents or cleaning agents contain enzymes preferably in total amounts of 1 ⁇ 10 -6 to 5 wt .-% based on active protein.
  • the protein concentration can be determined by known methods, for example the BCA method or the biuret method.
  • subtilisin type those of the subtilisin type are preferable.
  • these are the subtilisins BPN 'and Carlsberg and their further developed forms, the protease PB92, the subtilisins 147 and 309, the alkaline protease from Bacillus lentus, subtilisin DY and the enzymes thermitase which can no longer be assigned to the subtilisins in the narrower sense, Proteinase K and the proteases TW3 and TW7.
  • amylases which can be used according to the invention are the ⁇ -amylases from Bacillus licheniformis, from ⁇ . amyloliquefaciens, from ⁇ . stearothermophilus, from Aspergillus niger and A. oryzae, as well as those improved for use in detergents and cleaners
  • lipases or cutinases are also usable according to the invention.
  • lipases or cutinases in particular because of their triglyceride-splitting activities, but also in order to generate in situ peracids from suitable precursors.
  • lipases or cutinases include, for example, those originally from Humicola lanuginosa
  • enzymes can be used which are termed hemicellulases
  • Oxidoreductases for example oxidases, oxygenases, catalases, peroxidases, such as halo, chloro, bromo, lignin, glucose or manganese peroxidases, dioxygenases or laccases (phenol oxidases, polyphenol oxidases) can be used according to the invention to increase the bleaching effect.
  • organic, particularly preferably aromatic, compounds which interact with the enzymes in order to enhance the activity of the relevant oxidoreductases (enhancers) or in the case of strong
  • a protein and / or enzyme may be particularly protected during storage against damage such as inactivation, denaturation or degradation, such as by physical influences, oxidation or proteolytic cleavage.
  • damage such as inactivation, denaturation or degradation, such as by physical influences, oxidation or proteolytic cleavage.
  • inhibition of proteolysis is particularly preferred, especially if the agents also contain proteases.
  • Detergents may contain stabilizers for this purpose; the provision of such means constitutes a preferred embodiment of the present invention.
  • Washing or cleaning-active proteases and amylases are generally not provided in the form of the pure protein but rather in the form of stabilized, storable and transportable preparations.
  • Such prefabricated preparations include, for example, the solid preparations obtained by granulation, extrusion or lyophilization or, especially in the case of liquid or gel-form detergents, solutions of the enzymes, advantageously as concentrated as possible, low in water and / or added with stabilizers or further auxiliaries.
  • the enzymes may be encapsulated for both the solid and liquid dosage forms, for example by spray-drying or extruding the enzyme solution together with a preferably natural polymer or in the form of capsules, for example those in which the enzymes are entrapped as in a solidified gel or in those of the core-shell type, in which an enzyme-containing core with a water, air and / or
  • Chemical-impermeable protective layer is coated.
  • further active ingredients for example stabilizers, emulsifiers, pigments, bleaches or dyes, may additionally be applied.
  • 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 by applying polymeric film-forming agent, low in dust and storage stable due to the coating.
  • the enzyme protein forms only a fraction of the total weight of conventional enzyme preparations.
  • Protease and amylase preparations contain between 0.1 and 40 wt .-%, preferably between 0.2 and 30 wt .-%, particularly preferably between 0.4 and 20 wt .-% and
  • the automatic dishwashing compositions according to the invention may additionally comprise, in addition to the abovementioned nonionic surfactants to be used according to the invention, other nonionic surfactants.
  • Machine dishwashing agent of the invention is in a preferred
  • Embodiment between 0, 1 and 30 wt .-%, preferably between 0.5 and 20 wt .-%, preferably between 1 and 10 wt .-% and in particular between 2 and 6 wt .-%.
  • Preferred further nonionic surfactants in a preferred embodiment have the general formula R 0 [CH 2 CH (CH 3 ) O] x [CH 2 CH 2 O] y [CH 2 CH (CH 3 ) O] z CH 2 CH (OH) R 2 , in the R for a linear or branched aliphatic hydrocarbon radical having 4 to 22
  • R 2 is a linear or branched
  • Hydrocarbon radical having 2 to 26 carbon atoms or mixtures thereof, and x and z represents values between 0 and 40 and y is a value of at least 15.
  • the automatic dishwashing detergent contains, based on its total weight, nonionic surfactant of the general formula R 0 [CH 2 CH (CH 3 ) O] x [CH 2 CH 2 O] y [CH 2 CH (CH 3 ) O] z is CH 2 CH (OH) R 2 in amounts of from 0.1 to 15% by weight, preferably from 0.2 to 10% by weight, particularly preferably from 0.5 to 8% by weight and in particular from 1.0 to 6% by weight.
  • R 0 [CH 2 CH 2 O] y CH 2 CH (OH) R 2 in the R is a linear or branched aliphatic hydrocarbon radical having 4 to 22 Carbon atoms or mixtures thereof, R 2 is a linear or branched hydrocarbon radical having 2 to 26 Carbon atoms or mixtures thereof and y is a value between 15 and 120, preferably 20 to 100, in particular 20 to 80.
  • non-ionic surfactants include, for example, hydroxy mixed ethers of the general formula C 6-22 -CH (OH) CH 2 0- (EO) 2 oi 2 o- C 2 -26, for example, the C 8-12 fatty alcohol (EO) 22 2-hydroxydecyl ether and the C 4 . 22 fatty alcohol (EO) 40 -8o-2-hydroxyalkyl ethers.
  • Machine dishwashing detergent according to the invention, characterized in that as further nonionic surfactant a surfactant of the general formula
  • R is CH (OH) CH 2 O- (CH 2 CH 2 O) 2 oi 2 o-R 2 is used, wherein R and R 2 independently of one another for a linear or branched aliphatic hydrocarbon radical having 2 to 20
  • Carbon atoms are particularly preferred.
  • surfactants of the formula R 0 [CH 2 CH (CH 3 ) O] x [CH 2 CH 2 O] y CH 2 Cl-1 (OI-l) R 2 , in which R is a linear or branched aliphatic hydrocarbon radical with 4 to 22 carbon atoms or mixtures thereof, R 2 is a linear or branched one
  • Hydrocarbon radical having 2 to 26 carbon atoms or mixtures thereof and x is between 0.5 and 4, preferably 0.5 to 1, 5, and y is a value of at least 15.
  • R 0 [CH 2 CH (CH 3 ) O] x [CH 2 CH 2 O] y CH 2 CH (OH) R 2 in which R is a linear or branched aliphatic hydrocarbon radical having 4 to 22 carbon atoms or mixtures thereof , R 2 is a linear or branched hydrocarbon radical having 2 to 26
  • Carbon atoms or mixtures thereof and x is a value between 1 and 40 and y is a value between 15 and 40, wherein the alkylene units [CH 2 CH (CH 3 ) 0] and [CH 2 CH 2 0] randomized, ie in Form a random statistical distribution.
  • Hydroxyl group on one of the two terminal alkyl radicals can be compared to conventional polyalkoxylated fatty alcohols without free hydroxyl group rinse performance and drying can be significantly improved.
  • the stated C chain lengths and degrees of ethoxylation or degrees of alkoxylation of the abovementioned nonionic surfactants represent statistical mean values which, for a specific product, may be an integer or a fractional number. Due to the methods II trade products of the formulas mentioned are usually not from an individual representative, but from mixtures, which may result in both the C chain lengths and for the degrees of ethoxylation and degrees of alkoxylation averages and resulting broken numbers.
  • nonionic surfactants can not only be used as
  • Particularly preferred automatic dishwasher detergents according to the invention contain
  • polyvinylpyrrolidone preferably polyvinylpyrrolidone particles having an average particle diameter of 100 to 150 ⁇ , in particular from 1 10 to 130 ⁇ ; c) 2 to 30% by weight of bleaching agent, in particular sodium percarbonate;
  • R and R 2 independently represent an alkyl or alkenyl radical having 4 to 22 carbon atoms
  • - x and y independently represent values between 1 and 40.
  • automatic dishwashing agents comprise a) from 0.1 to 5% by weight of polyvinylpyrrolidone particles, preferably those having an average particle diameter of from 100 to 150 ⁇ m, in particular from 10 to 130 ⁇ m; b) 0.1 to 1 wt .-% triazole compound, in particular benzotriazole;
  • bleaching agent in particular sodium percarbonate
  • the agents according to the invention may contain further washing or cleaning-active substances, preferably from the group of
  • Another object of the present application is a method for cleaning dishes in a dishwasher, using a machine dishwashing agent according to the invention, wherein the automatic dishwashing detergent preferably metered during the passage of a dishwasher, before the main wash cycle or in the course of the main wash cycle in the interior of a dishwasher become.
  • the automatic dishwashing detergent preferably metered during the passage of a dishwasher, before the main wash cycle or in the course of the main wash cycle in the interior of a dishwasher become.
  • agent according to the invention in the interior of the dishwasher can be done manually, but preferably the agent is metered by means of the metering chamber of the dishwasher in the interior of the dishwasher.
  • the dishwasher detergents according to the invention exhibit their advantageous cleaning and silver protection properties, in particular also in low-temperature cleaning processes.
  • dishwashing processes using agents according to the invention are therefore characterized in that the dishwashing processes are carried out at a liquor temperature below 60 ° C., preferably below 50 ° C.
  • compositions according to the invention are distinguished by improved silver protection performance compared to conventional automatic dishwasher detergents.
  • Another object of the present application is therefore the use of a machine dishwashing detergent according to the invention for improving the silver protection in automatic dishwashing.
  • Dishwashing detergent tablets can be taken from the following tables: Ingredient Recipe 1 Recipe 2 Recipe 3 Recipe 4
  • Anionic copolymer C 0.5 to 18 0.5 to 18 0.5 to 18 0.5 to 18 0.5 to 18 0.5 to 18
  • Polyvinylpyrrolidone particles 0.1 to 5 0, 1 to 5 0, 1 to 5 0, 1 to 5
  • Benzotriazole 0.01 to 10, 1 to 0.5 0.01 to 1 0.1 to 0.5
  • Nonionic surfactant A 1 0.05 to 10 0.05 to 10 0.05 to 10 0.05 to 10
  • Benzotriazole 0.01 to 10, 1 to 0.5 0.01 to 1 0.1 to 0.5
  • Polyvinylpyrrolidone particles 0.1 to 5 0, 1 to 5 0, 1 to 5 0, 1 to 5 diameter: 100-150 ⁇
  • Anionic copolymer C 0.5 to 18 0.5 to 18 0.5 to 18 0.5 to 18 0.5 to 18 0.5 to 18
  • Polyvinylpyrrolidone particles 0.1 to 5 0, 1 to 5 0, 1 to 5 0, 1 to 5 diameter: 100-150 ⁇
  • Benzotriazole 0.01 to 10, 1 to 0.5 0.01 to 1 0.1 to 0.5
  • Bleaching catalyst 0 to 2 0.0025 to 1 0 to 2 0.0025 to 1
  • Nonionic surfactant A '0.05 to 10 0.05 to 10 0.05 to 10 0.05 to 10 0.05 to 10
  • Anionic copolymer C a 0.5 to 18 0.5 to 18 0.5 to 18 0.5 to 18 0.5 to 18
  • Polyvinylpyrrolidone particles 0.1 to 5 0, 1 to 5 0, 1 to 5 0, 1 to 5 diameter: 100-150 ⁇
  • Benzotriazole 0.01 to 10, 1 to 0.5 0.01 to 1 0.1 to 0.5 Sodium percarbonate 2 to 30 2 to 30 4 to 20 4 to 20
  • Bleaching catalyst 0 to 2 0.0025 to 1 0 to 2 0.0025 to 1
  • R and R 2 independently of one another represent a branched or unbranched, saturated or unsaturated, optionally hydroxylated alkyl radical having 4 to 22 carbon atoms;
  • Alk is a branched or unbranched alkyl radical having 2 to 4 carbon atoms
  • M is an alkyl radical from the group CH 2 , CHR 3 , CR 3 R 4 , CH 2 CHR 3 and CHR 3 CHR 4 , where R 3 and R 4 independently of one another represent a branched or unbranched, saturated or unsaturated alkyl radical having 1 to 18 carbon atoms
  • a is a nonionic surfactant A of the general formula R -CH (OH) CH 2 -
  • R, R and R 2 independently represent an alkyl or alkenyl radical having 6 to 22 carbon atoms
  • b is a nonionic surfactant A of the general formula R -0 (CH 2 CH 2 0) x CR 3 R 4 (OCH 2 CH 2 ) y O-R 2 is used in the
  • R and R 2 independently represent an alkyl or alkenyl radical having 4 to 22 carbon atoms
  • R 3 and R 4 independently of one another are H or an alkyl radical or alkenyl radical having 1 to 18 carbon atoms and
  • - x and y independently represent values between 1 and 40;

Abstract

L'invention concerne des détergents pour lave-vaisselle qui comprennent une association d'un composé triazole et d'un polymère qui comprend des hétérocycles contenant de l'azote. Lesdits détergents assurent une protection améliorée de l'argent et réduisent en particulier le ternissement de l'argenterie.
PCT/EP2012/060108 2011-06-07 2012-05-30 Détergent vaisselle protégeant l'argenterie WO2012168118A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12723718.8A EP2718414A1 (fr) 2011-06-07 2012-05-30 Détergent vaisselle protégeant l'argenterie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011077098A DE102011077098A1 (de) 2011-06-07 2011-06-07 Silberschützendes Geschirrspülmittel
DE102011077098.4 2011-06-07

Publications (1)

Publication Number Publication Date
WO2012168118A1 true WO2012168118A1 (fr) 2012-12-13

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WO2015001293A1 (fr) * 2013-07-05 2015-01-08 Xeros Limited Procédé de traitement d'un substrat métallique
WO2015001294A1 (fr) * 2013-07-05 2015-01-08 Xeros Limited Procédé pour traiter un substrat métallique

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GB201903318D0 (en) * 2019-03-11 2019-04-24 Reckitt Benckiser Finish Bv Product

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WO1995001416A1 (fr) * 1993-07-01 1995-01-12 The Procter & Gamble Company Composition pour lave-vaisselle contenant un agent de blanchiment oxygene, de l'huile de paraffine et un compose benzotriazole pour inhiber le ternissement de l'argent
EP0893491A1 (fr) * 1997-07-23 1999-01-27 Unilever Plc Compositions détergentes pour lave-vaisselle automatiques
WO2002033038A2 (fr) * 2000-10-18 2002-04-25 The Procter & Gamble Company Detergent en tablette
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DE19631787C2 (de) * 1996-08-07 2000-06-29 Henkel Kgaa Benzotriazolhaltige, granulare Komponente für den Einsatz in Maschinengeschirrspülmitteln (MGSM) und Verfahren zu dessen Herstellung
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WO1995001416A1 (fr) * 1993-07-01 1995-01-12 The Procter & Gamble Company Composition pour lave-vaisselle contenant un agent de blanchiment oxygene, de l'huile de paraffine et un compose benzotriazole pour inhiber le ternissement de l'argent
EP0893491A1 (fr) * 1997-07-23 1999-01-27 Unilever Plc Compositions détergentes pour lave-vaisselle automatiques
WO2002033038A2 (fr) * 2000-10-18 2002-04-25 The Procter & Gamble Company Detergent en tablette
WO2010028186A1 (fr) * 2008-09-07 2010-03-11 Lam Research Corporation Formulations de solution de nettoyage pour substrats

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
WO2015001293A1 (fr) * 2013-07-05 2015-01-08 Xeros Limited Procédé de traitement d'un substrat métallique
WO2015001294A1 (fr) * 2013-07-05 2015-01-08 Xeros Limited Procédé pour traiter un substrat métallique

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