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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic 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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/722—Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/825—Mixtures of compounds all of which are non-ionic

Definitions

• the present invention relates to automatic dishwashing detergents and methods of using these agents.
• the invention relates to automatic dishwashing detergents which contain nonionic surfactants which have particularly low viscosities in aqueous solution.
• Machine dishwashing in home dishwashers is a process that is radically different from washing clothes in home washing machines. While in a washing machine the material to be cleaned is permanently moved in the liquor and in this way the cleaning is mechanically assisted, in a dishwasher the rinsing liquor is applied to the surfaces to be cleaned by a spray system. There, the cleaning liquor must automatically counteract even stubborn dirt, without any support by mechanical influences occurs. The level of performance of automatic dishwashing detergents must therefore be incomparably higher than that of conventional laundry detergents.
• the agents to be provided should be superior to conventional agents even in comparison to lower doses, especially on greasy soils.
• the funds should be used both as a conventional machine dishwashing detergent ("cleaner") in Powder or granule form or as a tablet or pourable offer form, as well as a combination product ("2in1" products which combine cleaners and rinse aid in combination and "3in1" products which combine cleaners, rinse aid and salt substitute) ,
• automatic dishwashing detergents which satisfy the abovementioned requirement profile can be provided if they contain builders and certain nonionic surfactants and optionally further ingredients of detergents.
• the present invention relates to automatic dishwashing compositions containing builder (s), surfactant (s) and optionally further ingredients, characterized in that they contain 0.1 to 50 wt .-% of one or more nonionic surfactants of the general formula I.
• R 1 is a straight-chain or branched, saturated or mono- or polyunsaturated C 6-24 alkyl or alkenyl radical; each group R 2 or R 3 is independently selected from -CH 3 ; -CH 2 CH 3 , -CH 2 CH 2 -CH 3 , CH (CH 3 ) 2 and the indices w, x, y, z independently of one another represent integers from 1 to 6 which contain surfactants at a concentration of 0, 01 g / l in distilled water have a diffusion coefficient of at least 9 - 10 -11 m 2 s -1 .
• Another object of the present invention is a machine dishwashing process in which a dishwashing detergent according to the invention is used.
• the diffusion coefficient can be calculated according to the theory of Fainerman et al. (Colloids and Surfaces A, 90 (1994) 213-224 ) from the measurement of the dynamic surface tension.
• the higher diffusion coefficients of the surfactant at high concentrations causes a significantly improved flow behavior of the overall formulation of surfaces treated with the cleaning agents.
• the surfactants used according to the invention wet the surfaces quickly and, above all, uniformly, so that the film of the rinse solution runs off uniformly on the dishes and does not break open prematurely. In this way, stain and schlierenlose surfaces and thus improved rinse results are obtained.
• the surfactant has even higher diffusion coefficients in a highly concentrated aqueous solution.
• erfundgsfelde agents are preferred in which the / the nonionic (s) surfactant (s) at a concentration of 0.01 g / l in distilled water has a diffusion coefficient of at least 9.5 ⁇ 10 -11 m 2 s -1 , preferably of at least 1 ⁇ 10 -10 m 2 s -1 and in particular of at least 2.5 ⁇ 10 -10 m 2 s -1 .
• Particularly preferred machine dishwasher detergents according to the invention contain one or more nonionic surfactant (s) which, at a concentration of 0.01 g / l in distilled water, have a diffusion coefficient of at least 5 ⁇ 10 -10 m 2 s -1 , preferably of at least 1 ⁇ 10 -9 m 2 s -1 and in particular of at least 5 ⁇ 10 -9 m 2 s -1 .
• nonionic surfactant s
• the diffusion coefficient of the present invention contained in the surfactants in aqueous solutions it may be advantageous for certain formulations when the surfactants are liquid at room temperature. This has, in addition to the easier processability with powdered or granular agents, the additional advantage that the surfactants do not have to be melted during processing, whereby the manufacturing costs can be further reduced.
• Nonionic surfactants which have a diffusion coefficient of at least 9 ° 10 -11 m 2 s -1 at a concentration of 0.01 g / l in distilled water can have a molecular structure of different composition. Depending on the type and length of the hydrophobic and the hydrophilic radical in the molecule, the properties of the surfactants can be controlled so that desired properties are present.
• nonionic surfactants having the properties described above are used in the inventive compositions in amounts of 0.1 to 50 wt .-%, each based on the total agent.
• Preferred automatic dishwashing agents according to the invention contain the nonionic surfactant (s) in amounts of from 0.5 to 40% by weight, preferably from 1 to 30 Wt .-%, particularly preferably from 2.5 to 25 wt .-% and in particular from 5 to 20 wt .-%, each based on the total agent.
• Nonionic surfactants used in the context of the present invention are low-foaming nonionic surfactants which have alternating ethylene oxide and alkylene oxide units, one to ten EO or AO groups being bonded to one another before one block is followed by the other groups.
• Automatic dishwashing agents according to the invention contain nonionic surfactant (s) surfactants of the general formula I.
• R 1 is a straight-chain or branched, saturated or mono- or polyunsaturated C 6-24 alkyl or alkenyl radical; each group R 2 or R 3 is independently selected from -CH 3 ; -CH 2 CH 3 , -CH 2 CH 2 -CH 3 , CH (CH 3 ) 2 and the indices w, x, y, z independently of one another are integers from 1 to 6.
• the nonionic surfactants of formula I can be prepared by known methods from the corresponding alcohols R 1 -OH and Ethlyne- or alkylene oxide.
• the radical R 1 in the formula I above may vary depending on the origin of the alcohol. If native sources are used, the radical R 1 has an even number of carbon atoms and is usually unbranched, wherein the linear radicals of alcohols of natural origin having 12 to 18 carbon atoms, for example from coconut, palm, tallow or Oleyl alcohol, are preferred.
• Alcohols accessible from synthetic sources are, for example, the Guerbet alcohols or methyl-branched or linear and methyl-branched radicals in the 2-position in the mixture, as they are usually present in oxo alcohol radicals.
• R 1 in formula 1 is an alkyl radical having 6 to 24, preferably 8 to 20, particularly preferably 9 to 15 and in particular 9 to 11 carbon atoms.
• alkylene oxide unit which is contained in the preferred nonionic surfactants in alternation with the ethylene oxide unit, in particular butylene oxide is considered in addition to propylene oxide.
• R 2 or R 3 are independently selected from - CH 2 CH 2 -CH 3 or CH (CH 3 ) 2 are suitable.
• Preferred automatic dishwashing detergents are CH 2 CH 2 -CH 3 or CH (CH 3 ) 2 are suitable.
• Preferred automatic dishwashing agents are characterized in that R 2 and R 3 are each a residue -CH 3 , w and x independently of one another for values of 3 or 4 and y and z independently of one another represent values of 1 or 2.
• nonionic surfactants which have a C 9-15 -alkyl radical having 1 to 4 ethylene oxide units, followed by 1 to 4 propylene oxide units, followed by 1 to 4 ethylene oxide units, followed by 1 to 4 propylene oxide units.
• These surfactants have the required high diffusion coefficients in aqueous solution and can be used according to the invention with particular preference.
• the stated C chain lengths and degrees of ethoxylation or degrees of alkoxylation represent statistical averages, which may be an integer or a fractional number for a particular product. Due to the manufacturing process, commercial products of the formulas mentioned are usually not made of an individual representative, but of mixtures, which may result in mean values for the C chain lengths as well as for the degrees of ethoxylation or degrees of alkoxylation and subsequently broken numbers.
• nonionic surfactants contained in the agents according to the invention with respect to the radical R. 1 , the rests R 2 and R 3 and the indices w, x, y and z characterized.
• Preferred agents according to the invention comprise one or more surfactants from the table below or mixtures of these.
• the agents according to the invention may contain further surfactants from the groups containing nonionic, anionic, cationic or amphoteric surfactants.
• additional nonionic surfactants it is preferred to use alkoxylated, advantageously ethoxylated, in particular primary, alcohols having preferably 8 to 18 carbon atoms and on average 1 to 12 moles of ethylene oxide (EO) per mole of alcohol in which the alcohol residue is linear or preferably methyl-branched in the 2-position may contain or linear and methyl-branched radicals in the mixture, as they are usually present in Oxoalkoholresten.
• EO ethylene oxide
• alcohol ethoxylates with linear radicals of alcohols of natural origin having 12 to 18 carbon atoms, for example of coconut, palm, tallow or oleyl alcohol, and on average 2 to 8 EO per mole of alcohol are preferred.
• the preferred ethoxylated alcohols include, for example, C 12-14 alcohols with 3 EO or 4 EO, C 9-11 alcohols with 7 EO, C 13-15 alcohols with 3 EO, 5 EO, 7 EO or 8 EO, C 12-18 alcohols with 3 EO, 5 EO or 7 EO and mixtures of these, such as mixtures of C 12-14 -alcohol with 3 EO and C 12-18 -alcohol with 5 EO.
• the degrees of ethoxylation given represent statistical means which, for a particular product, may be an integer or a fractional number.
• Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE).
• fatty alcohols with more than 12 EO can also be used. Examples include tallow fatty alcohol with 14 EO, 25 EO, 30 EO or 40 EO.
• nonionic surfactants and alkyl glycosides of the general formula RO (G) x can be used in which R is a primary straight-chain or methyl-branched, especially in the 2-position methyl-branched aliphatic radical having 8 to 22, preferably 12 to 18 carbon atoms and G is the symbol which represents a glycose unit having 5 or 6 C atoms, preferably glucose.
• the degree of oligomerization x which indicates the distribution of monoglycosides and oligoglycosides, is any number between 1 and 10; preferably x is 1.2 to 1.4.
• nonionic surfactants used either as the sole nonionic surfactant or in combination with other nonionic surfactants are alkoxylated, preferably ethoxylated or ethoxylated and propoxylated fatty acid alkyl esters, preferably having from 1 to 4 carbon atoms in the alkyl chain.
• Nonionic surfactants of the amine oxide type for example N-cocoalkyl-N, N-dimethylamine oxide and N-tallowalkyl-N, N-dihydroxyethylamine oxide, and the fatty acid alkanolamides may also be suitable.
• the amount of these nonionic surfactants is preferably not more than that of the ethoxylated fatty alcohols, especially not more than half thereof.
• surfactants are polyhydroxy fatty acid amides of the formula (II)
• RCO is an aliphatic acyl group having 6 to 22 carbon atoms
• R 1 is hydrogen, an alkyl or hydroxyalkyl group having 1 to 4 carbon atoms
• [Z] is a linear or branched polyhydroxyalkyl group having 3 to 10 carbon atoms and 3 to 10 hydroxyl groups.
• the polyhydroxy fatty acid amides are known substances which can usually be obtained by reductive amination of a reducing sugar with ammonia, an alkylamine or an alkanolamine and subsequent acylation with a fatty acid, a fatty acid alkyl ester or a fatty acid chloride.
• the group of polyhydroxy fatty acid amides also includes compounds of the formula (III)
• R is a linear or branched alkyl or alkenyl radical having 7 to 12 carbon atoms
• R 1 is a linear, branched or cyclic alkyl radical or an aryl radical having 2 to 8 carbon atoms
• R 2 is a linear, branched or cyclic alkyl radical or an aryl radical or an oxyalkyl radical having from 1 to 8 carbon atoms, with C 1-4 alkyl or phenyl radicals being preferred and [Z] being a linear polyhydroxyalkyl radical whose alkyl chain is substituted by at least two hydroxyl groups, or alkoxylated, preferably ethoxylated or propoxylated Derivatives of this residue.
• [Z] is preferably obtained by reductive amination of a reduced sugar, for example glucose, fructose, maltose, lactose, galactose, mannose or xylose.
• a reduced sugar for example glucose, fructose, maltose, lactose, galactose, mannose or xylose.
• the N-alkoxy- or N-aryloxy-substituted compounds can be converted into the desired polyhydroxy fatty acid amides by reaction with fatty acid methyl esters in the presence of an alkoxide as catalyst.
• the automatic dishwasher detergents according to the invention contain a nonionic surfactant which has a melting point above room temperature.
• preferred agents are characterized by containing nonionic surfactant (s) having a melting point above 20 ° C, preferably above 25 ° C, more preferably between 25 and 60 ° C, and more preferably between 26.6 and 43.3 ° C.
• Suitable nonionic surfactants which have melting or softening points in the stated temperature range are, for example, low-foaming nonionic surfactants which may be solid or highly viscous at room temperature. If high-viscosity nonionic surfactants are used at room temperature, it is preferred that they have a viscosity above 20 Pas, preferably above 35 Pas and in particular above 40 Pas. Nonionic surfactants which have waxy consistency at room temperature are also preferred.
• Preferred nonionic surfactants to be used at room temperature are from the groups of the alkoxylated nonionic surfactants, in particular the ethoxylated primary alcohols, and mixtures of these surfactants with structurally complicated surfactants such as polyoxypropylene / polyoxyethylene / polyoxypropylene (PO / EO / PO) surfactants.
• Such (PO / EO / PO) nonionic surfactants are also characterized by good foam control.
• the nonionic surfactant having a melting point above room temperature is an ethoxylated nonionic surfactant consisting of the reaction of a monohydroxyalkanol or alkylphenol having 6 to 20 carbon atoms, preferably at least 12 mol, more preferably at least 15 mol, especially at least 20 moles of ethylene oxide per mole of alcohol or alkylphenol emerged.
• a particularly preferred room temperature solid nonionic surfactant is obtained from a straight chain fatty alcohol having 16 to 20 carbon atoms (C 16-20 alcohol), preferably a C 18 alcohol and at least 12 moles, preferably at least 15 moles and especially at least 20 moles of ethylene oxide , Of these, the so-called “narrow range ethoxylates" (see above) are particularly preferred.
• particularly preferred agents according to the invention contain ethoxylated nonionic surfactant (s) consisting of C 6-20 monohydroxyalkanols or C 6-20 alkylphenols or C 16-20 fatty alcohols and more than 12 mol, preferably more than 15 mol and in particular more than 20 moles of ethylene oxide per mole of alcohol was recovered (n).
• ethoxylated nonionic surfactant consisting of C 6-20 monohydroxyalkanols or C 6-20 alkylphenols or C 16-20 fatty alcohols and more than 12 mol, preferably more than 15 mol and in particular more than 20 moles of ethylene oxide per mole of alcohol was recovered (n).
• the nonionic surfactant preferably additionally has propylene oxide units in the molecule.
• such PO units make up to 25 wt .-%, more preferably up to 20 wt .-% and in particular up to 15 wt .-% of the total molecular weight of the nonionic surfactant from.
• Particularly preferred nonionic surfactants are ethoxylated monohydroxyalkanols or Alkylphenols additionally having polyoxyethylene-polyoxypropylene block copolymer units.
• the alcohol or alkylphenol part of such nonionic surfactant molecules preferably constitutes more than 30% by weight, more preferably more than 50% by weight and in particular more than 70% by weight of the total molecular weight of such nonionic surfactants.
• Preferred rinse aids are characterized in that they contain ethoxylated and propoxylated nonionic surfactants, in which the propylene oxide units in the molecule up to 25 wt .-%, preferably up to 20 wt .-% and in particular up to 15 wt .-% of the total molecular weight of the nonionic Surfactants are included.
• More particularly preferred nonionic surfactants having melting points above room temperature contain from 40 to 70% of a polyoxypropylene / polyoxyethylene / polyoxypropylene block polymer blend containing 75% by weight of a reverse block copolymer of polyoxyethylene and polyoxypropylene with 17 moles of ethylene oxide and 44 moles of propylene oxide and 25% by weight. % of a block copolymer of polyoxyethylene and polyoxypropylene initiated with trimethylolpropane and containing 24 moles of ethylene oxide and 99 moles of propylene oxide per mole of trimethylolpropane.
• Nonionic surfactants that may be used with particular preference are available, for example under the name Poly Tergent ® SLF-18 from Olin Chemicals.
• a further preferred rinse aid according to the invention contains nonionic surfactants of the formula R 1 O [CH 2 CH (CH 3 ) O] x [CH 2 CH 2 O] y [CH 2 CH (OH) R 2 ],
• R 1 is a linear or branched aliphatic hydrocarbon radical having 4 to 18 carbon atoms or mixtures thereof
• R 2 denotes a linear or branched hydrocarbon radical having 2 to 26 carbon atoms or mixtures thereof and x for values between 0.5 and 1.5 and y is a value of at least 15.
• nonionic surfactants are the end-capped poly (oxyalkylated) nonionic surfactants of the formula R 1 O [CH 2 CH (R 3 ) O] x [CH 2 ] k CH (OH) [CH 2 ] j OR 2
• R 1 and R 2 are linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radicals having 1 to 30 carbon atoms
• R 3 is H or a methyl, ethyl, n-propyl, iso-propyl, n- Butyl, 2-butyl or 2-methyl-2-butyl radical, x for values between 1 and 30, k and j for values between 1 and 12, preferably between 1 and 5 stand. If the value x ⁇ 2, each R 3 in the above formula may be different.
• R 1 and R 2 are preferably linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radicals having 6 to 22 carbon atoms, with radicals having 8 to 18 carbon atoms being particularly preferred.
• R 3 H, -CH 3 or -CH 2 CH 3 are particularly preferred. Particularly preferred values for x are in the range from 1 to 20, in particular from 6 to 15.
• each R 3 in the above formula may be different if x ⁇ 2.
• the alkylene oxide unit in the square bracket can be varied.
• the value 3 for x has been selected here by way of example and may well be greater, with the variation width increasing with increasing x values and including, for example, a large number (EO) groups combined with a small number (PO) groups, or vice versa ,
• R 1 , R 2 and R 3 are as defined above and x is from 1 to 30, preferably from 1 to 20 and in particular from 6 to 18.
• Particularly preferred are surfactants in which the radicals R 1 and R 2 has 9 to 14 C atoms, R 3 is H and x assumes values of 6 to 15.
• rinse aids are preferred, the end-capped poly (oxyalkylated) nonionic surfactants of the formula R 1 O [CH 2 CH (R 3 ) O] x [CH 2 ] k CH (OH) [CH 2 ] j OR 2 in which R 1 and R 2 are linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radicals having 1 to 30 carbon atoms, R 3 is H or a methyl, ethyl, n-propyl, iso-propyl, x is n-butyl, 2-butyl or 2-methyl-2-butyl, x are values between 1 and 30, k and j are values between 1 and 12, preferably between 1 and 5, surfactants of the type R 1 O [CH 2 CH (R 3 ) O] x CH 2 CH (OH) CH 2 OR 2
• x is from 1 to 30, preferably from 1 to 20 and especially from 6 to 18, are particularly preferred.
• Anionic, cationic and / or amphoteric surfactants may also be used in conjunction with the surfactants mentioned, these having only minor importance because of their foaming behavior in dishwasher detergents and usually only in amounts below 10% by weight, in most cases even below 5% by weight .%, For example, from 0.01 to 2.5 wt .-%, each based on the agent used.
• the agents according to the invention can thus also contain anionic, cationic and / or amphoteric surfactants as surfactant component.
• anionic surfactants for example, those of the sulfonate type and sulfates are used.
• the surfactants of the sulfonate type are preferably C 9-13 -alkylbenzenesulfonates, olefinsulfonates, ie mixtures of alkene and hydroxyalkanesulfonates and disulfonates, as are obtained, for example, from C 12-18 -monoolefins having terminal or internal double bonds by sulfonation with gaseous sulfur trioxide and subsequent alkaline or acid hydrolysis of the sulfonation products into consideration.
• alkanesulfonates which are obtained from C 12-18 alkanes, for example by sulfochlorination or sulfoxidation with subsequent hydrolysis or neutralization.
• esters of ⁇ -sulfo fatty acids for example the ⁇ -sulfonated methyl esters of hydrogenated coconut, palm kernel or tallow fatty acids.
• sulfated fatty acid glycerol esters are to be understood as meaning the mono-, di- and triesters and mixtures thereof, as obtained in the preparation by esterification of a monoglycerol with 1 to 3 moles of fatty acid or in the transesterification of triglycerides with 0.3 to 2 moles of glycerol.
• Preferred sulfated fatty acid glycerol esters are the sulfonation products of saturated fatty acids having 6 to 22 carbon atoms, for example caproic acid, caprylic acid, capric acid, myristic acid, lauric acid, palmitic acid, stearic acid or behenic acid.
• Alk (en) ylsulfates are the alkali metal salts and in particular the sodium salts of the sulfuric monoesters of C 12 -C 18 fatty alcohols, for example coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol or the C 10 -C 20 oxo alcohols and those half-esters of secondary alcohols of these chain lengths are preferred. Also preferred are alk (en) ylsulfates of said chain length, which is a synthetic, on contain petrochemical base produced straight-chain alkyl radical, which have an analogous degradation behavior as the adequate compounds based on oleochemical raw materials.
• C 12 -C 16 alkyl sulfates and C 12 -C 15 alkyl sulfates and C 14 -C 15 alkyl sulfates are preferred.
• 2,3-alkyl sulfates which can be obtained as commercial products of the Shell Oil Company under the name DAN ® , are suitable anionic surfactants.
• EO ethylene oxide
• Fatty alcohols with 1 to 4 EO are suitable. Due to their high foaming behavior, they are only used in detergents in relatively small amounts, for example in amounts of from 1 to 5% by weight.
• Suitable anionic surfactants are also the salts of alkylsulfosuccinic acid, which are also referred to as sulfosuccinates or as sulfosuccinic esters and the monoesters and / or diesters of sulfosuccinic acid with alcohols, preferably fatty alcohols and in particular ethoxylated fatty alcohols.
• alcohols preferably fatty alcohols and in particular ethoxylated fatty alcohols.
• Preferred sulfosuccinates contain C 8-18 fatty alcohol residues or mixtures of these.
• Particularly preferred sulfosuccinates contain a fatty alcohol residue derived from ethoxylated fatty alcohols, which in themselves constitute nonionic surfactants (see description below).
• Sulfosuccinates whose fatty alcohol residues are derived from ethoxylated fatty alcohols with a narrow homolog distribution, are again particularly preferred.
• alk (en) ylsuccinic acid having preferably 8 to 18 carbon atoms in the alk (en) yl chain or salts thereof.
• anionic surfactants are particularly soaps into consideration.
• Suitable are saturated fatty acid soaps, such as the salts of lauric acid, myristic acid, palmitic acid, stearic acid, hydrogenated erucic acid and behenic acid, and in particular of natural fatty acids, e.g. Coconut, palm kernel or tallow fatty acids, derived soap mixtures.
• the anionic surfactants may be in the form of their sodium, potassium or ammonium salts and as soluble salts of organic bases, such as mono-, di- or triethanolamine.
• the anionic surfactants are preferably present in the form of their sodium or potassium salts, in particular in the form of the sodium salts.
• the agents according to the invention contain one or more builders.
• Builders are used in the compositions of the invention especially for binding calcium and magnesium.
• Common builders are the low molecular weight polycarboxylic acids and their salts, the homopolymeric and copolymeric polycarboxylic acids and their salts, the carbonates, phosphates and sodium and potassium silicates.
• Trisodium citrate and / or pentasodium tripolyphosphate and silicatic builders from the class of alkali disilicates are preferably used for the cleaning agents according to the invention.
• the potassium salts are preferable to the sodium salts because they often have a higher water solubility.
• Preferred water-soluble builders are, for example, tripotassium citrate, potassium carbonate and the potassium water glasses.
• Particularly preferred automatic dishwashing agents contain as builders phosphates, preferably alkali metal phosphates with particular preference of pentasodium or Pentakaliumtriphosphat (sodium or potassium tripolyphosphate).
• Alkali metal phosphates is the summary term for the alkali metal (especially sodium and potassium) salts of various phosphoric acids, in which one can distinguish metaphosphoric acids (HPO 3 ) n and orthophosphoric H 3 PO 4 in addition to higher molecular weight representatives.
• the phosphates combine several advantages: they act as alkali carriers, prevent limescale deposits and also contribute to the cleaning performance.
• Sodium dihydrogen phosphate, NaH 2 PO 4 exists as a dihydrate (density 1.91 gcm -3 , melting point 60 °) and as a monohydrate (density 2.04 gcm -3 ). Both salts are white powders which are very soluble in water and which lose their water of crystallization when heated and at 200 ° C into the weak acid diphosphate (disodium hydrogen diphosphate, Na 2 H 2 P 2 O 7 ), at higher temperature in sodium trimetaphosphate (Na 3 P 3 O 9 ) and Maddrell's salt (see below).
• NaH 2 PO 4 is acidic; It arises when phosphoric acid is adjusted to a pH of 4.5 with sodium hydroxide solution and the mash is sprayed.
• Potassium dihydrogen phosphate potassium phosphate primary or monobasic potassium phosphate, KDP
• KH 2 PO 4 is a white salt of 2.33 gcm -3 density, has a melting point of 253 ° [decomposition to form potassium polyphosphate (KPO 3 ) x ] and is light soluble in water.
• Disodium hydrogen phosphate (secondary sodium phosphate), Na 2 HPO 4 , is a colorless, very slightly water-soluble crystalline salt. It exists anhydrous and with 2 moles (density 2.066 gcm -3 , loss of water at 95 °), 7 moles (density 1.68 gcm -3 , melting point 48 ° with loss of 5 H 2 O) and 12 moles water ( Density 1.52 gcm -3 , melting point 35 ° with loss of 5 H 2 O) becomes anhydrous at 100 ° C and, upon increased heating, passes into the diphosphate Na 4 P 2 O 7 .
• Disodium hydrogen phosphate is prepared by neutralization of phosphoric acid with soda solution using phenolphthalein as an indicator.
• Dipotassium hydrogen phosphate (secondary or dibasic potassium phosphate), K 2 HPO 4 , is an amorphous, white salt that is readily soluble in water.
• Trisodium phosphate, tertiary sodium phosphate, Na 3 PO 4 are colorless crystals which have a density of 1.62 gcm -3 as dodecahydrate and a melting point of 73-76 ° C (decomposition), as decahydrate (corresponding to 19-20% P 2 O 5 ) have a melting point of 100 ° C and in anhydrous form (corresponding to 39-40% P 2 O 5 ) have a density of 2.536 gcm -3 .
• Trisodium phosphate is readily soluble in water under alkaline reaction and is prepared by evaporating a solution of exactly 1 mole of disodium phosphate and 1 mole of NaOH.
• Tripotassium phosphate (tertiary or tribasic potassium phosphate), K 3 PO 4 , is a white, deliquescent, granular powder of Density 2.56 gcm -3 , has a melting point of 1340 ° and is readily soluble in water with an alkaline reaction. It arises, for example, when heating Thomasschlacke with coal and potassium sulfate. Despite the higher price, the more soluble, therefore highly effective, potassium phosphates are often preferred in the detergent industry compared to corresponding sodium compounds.
• Tetrasodium diphosphate (sodium pyrophosphate), Na 4 P 2 O 7 , exists in anhydrous form (density 2.534 gcm -3 , melting point 988 °, also indicated 880 °) and as decahydrate (density 1.815-1.836 gcm -3 , melting point 94 ° with loss of water) , For substances are colorless, in water with alkaline reaction soluble crystals.
• Na 4 P 2 O 7 is formed on heating of disodium phosphate to> 200 ° or by reacting phosphoric acid with soda in a stoichiometric ratio and dewatering the solution by spraying.
• the decahydrate complexes heavy metal salts and hardness agents and therefore reduces the hardness of the water.
• Potassium diphosphate (potassium pyrophosphate), K 4 P 2 O 7 , exists in the form of the trihydrate and is a colorless, hygroscopic powder with a density of 2.33 gcm -3 , which is soluble in water, the pH being 1% Solution at 25 ° 10.4.
• Sodium and potassium phosphates in which one can distinguish cyclic representatives, the sodium or Kaliummetaphosphate and chain types, the sodium or potassium polyphosphates. In particular, for the latter are a variety of names in use: hot or cold phosphates, Graham's salt, Kurrolsches and Maddrell's salt. All higher sodium and potassium phosphates are collectively referred to as condensed phosphates.
• pentasodium triphosphate Na 5 P 3 O 10 (sodium tripolyphosphate)
• sodium tripolyphosphate sodium tripolyphosphate
• n 3
• 100 g of water dissolve at room temperature about 17 g, at 60 ° about 20 g, at 100 ° around 32 g of the salt water-free salt; after two hours of heating the solution to 100 ° caused by hydrolysis about 8% orthophosphate and 15% diphosphate.
• pentasodium triphosphate In the preparation of pentasodium triphosphate, phosphoric acid is reacted with sodium carbonate solution or sodium hydroxide solution in a stoichiometric ratio and the solution is dehydrated by spraying. Similar to Graham's salt and sodium diphosphate, pentasodium triphosphate dissolves many insoluble metal compounds (including lime soaps, etc.). Pentakaliumtriphosphat, K 5 P 3 O 10 (potassium tripolyphosphate), for example, in the form of a 50 wt .-% solution (> 23% P 2 O 5 , 25% K 2 O) in the trade. The potassium polyphosphates are widely used in the washing and cleaning industry.
• alkali carriers may be present.
• Suitable alkali carriers are alkali metal hydroxides, alkali metal carbonates, alkali metal hydrogencarbonates, alkali metal sesquicarbonates, alkali metal silicates, alkali metal silicates, and mixtures of the abovementioned substances, preference being given for the purposes of this invention to using the alkali metal carbonates, in particular sodium carbonate, sodium bicarbonate or sodium sesquicarbonate.
• a builder system comprising a mixture of tripolyphosphate and sodium carbonate.
• a builder system comprising a mixture of tripolyphosphate and sodium carbonate and sodium disilicate.
• compositions according to the invention may contain the builder (s), depending on the intended use, in different amounts.
• automatic dishwashing agents according to the invention are preferred which contain the builder (s) in amounts of from 5 to 90% by weight, preferably from 7.5 to 85% by weight and in particular from 10 to 80% by weight, in each case on the entire remedy, included.
• automatic dishwashing detergents In addition to builders, bleaches, bleach activators, enzymes, silver protectants, dyes and fragrances, etc., are preferred ingredients of automatic dishwashing detergents. In addition, further ingredients may be present, automatic dishwashing agents according to the invention being preferred which additionally contain one or more substances from the group of acidifying agents, chelating agents or coating-inhibiting polymers.
• Acidifying agents are both inorganic acids and organic acids, provided that they are compatible with the other ingredients.
• the solid mono-, oligo-and polycarboxylic acids are used. Again preferred from this group are citric acid, tartaric acid, succinic acid, malonic acid, adipic acid, maleic acid, fumaric acid, oxalic acid and also polyacrylic acid.
• the anhydrides of these acids can be used as Acidisersstoff, in particular maleic anhydride and succinic anhydride are commercially available.
• Organic sulfonic acids such as sulfamic acid are also usable.
• a commercially available as an acidifier in the context of the present invention is also preferably usable Sokalan ® DCS (trademark of BASF), a mixture of succinic acid (max. 31 wt .-%), glutaric acid (max. 50 wt .-%) (and adipic acid at most 33% by weight).
• Chelating agents are substances which form cyclic compounds with metal ions, with a single ligand occupying more than one coordination site on a central atom, i. H. at least "bidentate". In this case, normally stretched compounds are closed by complex formation via an ion into rings. The number of bound ligands depends on the coordination number of the central ion.
• Common and preferred chelating agents in the context of the present invention are, for example, polyoxycarboxylic acids, polyamines, ethylenediaminetetraacetic acid (EDTA) and nitrilotriacetic acid (NTA).
• complex-forming polymers ie polymers which carry functional groups either in the main chain itself or laterally to it, which can act as ligands and react with suitable metal atoms generally with the formation of chelate complexes, can be used according to the invention.
• the polymer-bound ligands of the resulting metal complexes can originate from only one macromolecule or belong to different polymer chains. The latter leads to the crosslinking of the material, provided that the complex-forming polymers were not previously crosslinked via covalent bonds.
• Complexing groups (ligands) of conventional complexing polymers are iminodiacetic, hydroxyquinoline, thiourea, guanidine, dithiocarbamate, hydroxamic, amidoxime, aminophosphoric, (cyclic) polyamino, mercapto, 1,3-dicarbonyl and Crown ether residues with z. T. very specific. Activities towards ions of different metals.
• Base polymers of many also commercially important complex-forming polymers are polystyrene, polyacrylates, polyacrylonitriles, polyvinyl alcohols, polyvinylpyridines and polyethyleneimines. Natural polymers such as cellulose, starch or chitin are also complex-forming polymers. In addition, these can be provided by polymer-analogous transformations with other ligand functionalities.
• polycarboxylic acids a) are understood as meaning carboxylic acids, including monocarboxylic acids, in which the sum of carboxyl and the hydroxyl groups contained in the molecule is at least 5.
• Complexing agents from the group of nitrogen-containing polycarboxylic acids, in particular EDTA are preferred.
• these complexing agents are at least partially present as anions. It is irrelevant whether they are introduced in the form of acids or in the form of salts.
• alkali metal, ammonium or alkylammonium salts, in particular sodium salts are preferred.
• Scale-inhibiting polymers can likewise be present in the agents according to the invention. These substances, which could be constructed chemically different, for example, from the groups of low molecular weight polyacrylates having molecular weights between 1000 and 20,000 daltons, with polymers having molecular weights below 15,000 daltons are preferred.
• Scale-inhibiting polymers may also have co-builder properties.
• organic cobuilders it is possible in particular to use polycarboxylates / polycarboxylic acids, polymeric polycarboxylates, aspartic acid, polyacetals, dextrins, further organic cobuilders (see below) and phosphonates in the dishwasher detergents according to the invention. These classes of substances are described below.
• Useful organic builder substances are, for example, the polycarboxylic acids which can be used in the form of their sodium salts, polycarboxylic acids meaning those carboxylic acids which carry more than one acid function. These are, for example, citric acid, adipic acid, succinic acid, glutaric acid, malic acid, tartaric acid, maleic acid, fumaric acid, sugar acids, aminocarboxylic acids, nitrilotriacetic acid (NTA), if such use is not objectionable for ecological reasons, and mixtures of these.
• Preferred salts are the salts of polycarboxylic acids such as citric acid, adipic acid, succinic acid, glutaric acid, tartaric acid, sugar acids and mixtures thereof.
• the acids themselves can also be used.
• the acids typically also 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.
• polymeric polycarboxylates are suitable, these are, for example, the alkali metal salts of polyacrylic acid or polymethacrylic acid, for example those having a molecular weight of 500 to 70000 g / mol.
• the molecular weights stated for polymeric polycarboxylates are weight-average molar masses M w of the particular acid form, which were determined in principle by means of gel permeation chromatography (GPC), a UV detector being used. The measurement was carried out against an external polyacrylic acid standard, which provides realistic molecular weight values due to its structural relationship with the polymers investigated. These data differ significantly from the molecular weight data, in which polystyrene sulfonic acids are used as standard. The molar masses measured against polystyrenesulfonic acids are generally significantly higher than the molecular weights specified in this document.
• Suitable polymers are in particular polyacrylates, which preferably have a molecular weight of 500 to 20,000 g / mol. Because of their superior solubility, this group may in turn, the short-chain polyacrylates, the molar masses of 1000 to 10,000 g / mol, and particularly preferably from 1000 to 4000 g / mol, have to be preferred.
• Both polyacrylates and copolymers of unsaturated carboxylic acids, monomers containing sulfonic acid groups and optionally further ionic or nonionogenic monomers are particularly preferably used in the compositions according to the invention.
• the sulfonic acid group-containing copolymers are described in detail below.
• copolymeric polycarboxylates in particular those of acrylic acid with methacrylic acid and of acrylic acid or methacrylic acid with maleic acid.
• 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.
• the (co) polymeric polycarboxylates can be used either as a powder or as an aqueous solution.
• the content of (co) polymeric polycarboxylates in the compositions is preferably 0.5 to 20% by weight, in particular 3 to 10% by weight.
• biodegradable polymers of more than two different monomer units for example those which contain as monomers salts of acrylic acid and maleic acid and vinyl alcohol or vinyl alcohol derivatives or as monomers salts of acrylic acid and 2-alkylallylsulfonic acid and sugar derivatives .
• Further preferred copolymers are those which preferably have as monomers acrolein and acrylic acid / acrylic acid salts or acrolein and vinyl acetate.
• polymeric aminodicarboxylic acids their salts or their precursors.
• polyaspartic acids or their salts and derivatives which, in addition to cobuilder properties, also have a bleach-stabilizing action.
• polyacetals which can be obtained by reacting dialdehydes with polyolcarboxylic acids which have 5 to 7 C atoms and at least 3 hydroxyl groups.
• Preferred polyacetals are obtained from dialdehydes such as glyoxal, glutaraldehyde, terephthalaldehyde and mixtures thereof and from polyol carboxylic acids such as gluconic acid and / or glucoheptonic acid.
• dextrins for example oligomers or polymers of carbohydrates, which can be obtained by partial hydrolysis of starches.
• the hydrolysis can be carried out by customary, for example acid or enzyme catalyzed processes.
• it is hydrolysis products having average molecular weights in the range of 400 to 500,000 g / mol.
• a polysaccharide with a dextrose equivalent (DE) in the range from 0.5 to 40, in particular from 2 to 30 is preferred, DE being a common measure of the reducing action of a polysaccharide compared to dextrose, which has a DE of 100 , is.
• DE dextrose equivalent
• the oxidized derivatives of such dextrins are their reaction products with oxidizing agents which are capable of oxidizing at least one alcohol function of the saccharide ring to the carboxylic acid function.
• a product oxidized to C 6 of the saccharide ring may be particularly advantageous.
• Oxydisuccinates and other derivatives of disuccinates are other suitable co-builders.
• ethylenediamine-N, N'-disuccinate (EDDS) is preferably used in the form of its sodium or magnesium salts.
• glycerol disuccinates and glycerol trisuccinates are also preferred in this context. Suitable amounts are in zeolithissen and / or silicate-containing formulations at 3 to 15 wt .-%.
• organic cobuilders are, for example, acetylated hydroxycarboxylic acids or their salts, which may optionally also be present in lactone form and which contain at least 4 carbon atoms and at least one hydroxyl group and a maximum of two acid groups.
• phosphonates are, in particular, hydroxyalkane or aminoalkanephosphonates.
• hydroxyalkane phosphonates 1-hydroxyethane-1,1-diphosphonate (HEDP) is of particular importance as a co-builder.
• HEDP 1-hydroxyethane-1,1-diphosphonate
• Preferred aminoalkanephosphonates are ethylenediamine tetramethylenephosphonate (EDTMP), diethylenetriaminepentamethylenephosphonate (DTPMP) and their higher homologs. They are preferably in the form of neutral sodium salts, eg. B.
• EDTMP hexasodium salt of EDTMP or as hepta- and octa-sodium salt of DTPMP used.
• Builder is used from the class of phosphonates preferably HEDP.
• the aminoalkanephosphonates also have a pronounced heavy metal binding capacity. Accordingly, in particular if the agents also contain bleach, it may be preferable to use aminoalkanephosphonates, in particular DTPMP, or to use mixtures of the phosphonates mentioned.
• the agents according to the invention may contain further customary ingredients of cleaning agents, in particular bleaching agents, bleach activators, enzymes, silver protectants, dyes and fragrances being of importance. These substances will be described below.
• sodium perborate tetrahydrate and sodium perborate monohydrate are of particular importance.
• Other useful bleaching agents are, for example, sodium percarbonate, peroxypyrophosphates, citrate perhydrates and H 2 O 2 -producing peracidic salts or peracids, such as perbenzoates, peroxophthalates, diperazelaic acid, phthaloiminoperacid or diperdodecanedioic acid.
• Cleaning agents according to the invention may also contain bleaching agents from the group of organic bleaching agents. Typical organic bleaches are the diacyl peroxides such as dibenzoyl peroxide.
• peroxyacids examples of which include the alkyl peroxyacids and the aryl peroxyacids.
• Preferred representatives are (a) the peroxybenzoic acid and its ring-substituted derivatives, such as alkylperoxybenzoic acids, but also peroxy- ⁇ -naphthoic acid and magnesium monoperphthalate, (b) the aliphatic or substituted aliphatic peroxyacids, such as peroxylauric acid, peroxystearic acid, ⁇ -phthalimidoperoxycaproic acid [phthaloiminoperoxyhexanoic acid (PAP)] , o-carboxybenzamidoperoxycaproic acid, N-nonenylamidoperadipic acid and N-nonenylamidopersuccinate, and (c) aliphatic and araliphatic peroxydicarboxylic acids, such as 1,12-diperoxycarboxylic acid, 1,9-diper
• Chlorine or bromine-releasing substances can also be used as bleaching agents in the machine dishwashing detergents according to the invention.
• suitable chlorine or bromine releasing materials are, for example, heterocyclic N-bromo- and N-chloroamides, for example trichloroisocyanuric acid, tribromoisocyanuric acid, dibromoisocyanuric acid and / or dichloroisocyanuric acid (DICA) and / or their salts with cations such as potassium and sodium into consideration.
• DICA dichloroisocyanuric acid
• Hydantoin compounds such as 1,3-dichloro-5,5-dimethylhydantoin are also suitable.
• Preferred automatic dishwashing agents according to the invention additionally contain bleaching agents in amounts of from 1 to 40% by weight, preferably from 2.5 to 30% by weight and in particular from 5 to 20% by weight, in each case based on the total composition.
• bleach activators which aid in the action of the bleaches have already been mentioned above as a possible ingredient of the rinse aid particles.
• Known bleach activators are compounds which contain one or more N- or O-acyl groups, such as substances from the class of the anhydrides, the esters, the imides and the acylated imidazoles or oximes.
• Examples are tetraacetylethylenediamine TAED, tetraacetylmethylenediamine TAMD and tetraacetylhexylenediamine TAHD, but also pentaacetylglucose PAG, 1,5-diacetyl-2,2-dioxo-hexahydro-1,3,5-triazine DADHT and isatoic anhydride ISA.
• bleach activators it is possible to use compounds which, under perhydrolysis conditions, give aliphatic peroxycarboxylic acids having preferably 1 to 10 C atoms, in particular 2 to 4 C atoms, and / or optionally substituted perbenzoic acid.
• Suitable substances are those which carry O- and / or N-acyl groups of the stated C atom number and / or optionally substituted benzoyl groups.
• polyacylated alkylenediamines in particular tetraacetylethylenediamine (TAED), acylated triazine derivatives, in particular 1,5-diacetyl-2,4-dioxohexahydro-1,3,5-triazine (DADHT), acylated glycolurils, in particular tetraacetylglycoluril (TAGU), N- Acylimides, in particular N-nonanoylsuccinimide (NOSI), acylated phenolsulfonates, in particular n-nonanoyl or isononanoyloxybenzenesulfonate (n- or iso-NOBS), carboxylic anhydrides, in particular phthalic anhydride, acylated polyhydric alcohols, in particular triacetin, ethylene glycol diacetate, 2,5-diacetoxy- 2,5-dihydrofuran, n-methyl-morph
• bleach catalysts can also be incorporated into the rinse aid particles.
• 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.
• Bleach activators from the group of the polyacylated alkylenediamines in particular tetraacetylethylenediamine (TAED), N-acylimides, in particular N-nonanoylsuccinimide (NOSI), acylated phenolsulfonates, in particular n-nonanoyl or isononanoyloxybenzenesulfonate (n- or iso-NOBS), are preferred -Methyl-morpholinium acetonitrile-methyl sulfate (MMA), preferably in amounts of up to 10 wt .-%, in particular 0.1 wt .-% to 8 wt .-%, particularly 2 to 8 wt .-% and particularly preferably 2 to 6 wt .-% based on the total agent used.
• TAED tetraacetylethylenediamine
• N-acylimides in particular N-nonanoylsuccinimide (NOS
• Bleach-enhancing transition metal complexes in particular having the central atoms Mn, Fe, Co, Cu, Mo, V, Ti and / or Ru, preferably selected from the group of manganese and / or cobalt salts and / or complexes, particularly preferably the cobalt (ammine) Complexes of the cobalt (acetate) complexes, the cobalt (carbonyl) complexes, the chlorides of cobalt or manganese, manganese sulfate are used in conventional amounts, preferably in an amount up to 5 wt .-%, in particular of 0.0025 wt % to 1 wt .-% and particularly preferably from 0.01 wt .-% to 0.25 wt .-%, each based on the total agent used. But in special cases, more bleach activator can be used.
• Suitable enzymes in the detergents according to the invention are, in particular, those from the classes of the hydrolases, such as the proteases, esterases, lipases or lipolytic enzymes, amylases, glycosyl hydrolases and mixtures of the enzymes mentioned. All of these hydrolases contribute to the removal of stains such as proteinaceous, fatty or starchy stains. For bleaching and oxidoreductases can be used. Particularly suitable are bacterial strains or fungi such as Bacillus subtilis, Bacillus licheniformis, Streptomyceus griseus, Coprinus cinereus and Humicola insolens, as well as enzymatically-derived variants derived from their genetically modified variants.
• the hydrolases such as the proteases, esterases, lipases or lipolytic enzymes, amylases, glycosyl hydrolases and mixtures of the enzymes mentioned. All of these hydrolases contribute to the removal of stains such as proteinaceous,
• subtilisin-type proteases and in particular proteases derived from Bacillus lentus are used.
• enzyme mixtures for example from protease and amylase or protease and lipase or lipolytic enzymes or from protease, amylase and lipase or lipolytic enzymes or protease, lipase or lipolytic enzymes, but in particular protease and / or lipase-containing mixtures or mixtures with lipolytic enzymes of particular interest.
• lipolytic enzymes are the known cutinases.
• Peroxidases or oxidases have also proved suitable in some cases.
• Suitable amylases include, in particular, alpha-amylases, iso-amylases, pullulanases and pectinases.
• the enzymes may be adsorbed to carriers or embedded in encapsulants to protect against premature degradation.
• the proportion of enzymes, enzyme mixtures or For example, enzyme granules may be about 0.1 to 5 weight percent, preferably 0.5 to about 4.5 weight percent.
• preferred automatic dishwashing detergents according to the invention are those which additionally comprise enzyme (s) in amounts of from 0.01 to 15% by weight, preferably from 0.1 to 10% by weight and in particular from 0.5 to 6% by weight, in each case based on the total agent included.
• Dyes and fragrances can be added to the machine dishwasher detergents according to the invention in order to improve the aesthetic impression of the resulting products and to provide the consumer with a visually and sensory "typical and unmistakable" product in addition to performance.
• perfume oils or fragrances individual fragrance compounds, e.g. the synthetic products of the ester, ether, aldehyde, ketone, alcohol and hydrocarbon type are used. Fragrance compounds of the ester type are known e.g.
• the ethers include, for example, benzyl ethyl ether, to the aldehydes e.g.
• the linear alkanals having 8-18 C atoms citral, citronellal, citronellyloxyacetaldehyde, cyclamen aldehyde, hydroxycitronellal, lilial and bourgeonal, to the ketones e.g. the ionones, ⁇ -isomethylionone and methylcedryl ketone, among the alcohols anethole, citronellol, eugenol, geraniol, linalool, phenylethyl alcohol and terpineol, the hydrocarbons mainly include the terpenes such as limonene and pinene.
• fragrance oils may also contain natural fragrance mixtures such as are available from vegetable sources, e.g. Pine, citrus, jasmine, patchouly, rose or ylang-ylang oil. Also suitable are muscatel, sage, chamomile, clove, lemon balm, mint, cinnamon, lime, juniper, vetiver, olibanum, galbanum and labdanum, and orange blossom, neroliol, orange peel and sandalwood.
• the fragrances can be incorporated directly into the detergents according to the invention, but it can also be advantageous to apply the fragrances to carriers, which enhance the adhesion of the perfume to the laundry and provide a slower fragrance release for long-lasting fragrance of the textiles.
• carrier materials for example, cyclodextrins have been proven, the cyclodextrin-perfume complexes can be additionally coated with other excipients.
• compositions made according to the invention may (or parts thereof) be colored with suitable dyes.
• suitable dyes the selection of which presents no difficulty to the skilled person, have a high storage stability and insensitivity to the other ingredients of the agents and against light and no pronounced substantivity to the substrates to be treated with the agents such as glass, ceramic or plastic dishes, not to stain them.
• the detergents according to the invention may contain corrosion inhibitors for the protection of the items to be washed or the machine, with silver protectants in particular being of particular importance in the field of automatic dishwashing. It is possible to use the known substances of the prior art. In general, silver protectants selected from the group of triazoles, benzotriazoles, bisbenzotriazoles, aminotriazoles, alkylaminotriazoles and transition metal salts or complexes can be used in particular. Particularly preferred to use are benzotriazole and / or alkylaminotriazole. In addition, active chlorine-containing agents are frequently found in cleaner formulations, which can markedly reduce the corrosion of the silver surface.
• chlorine-free cleaners are particularly oxygen and nitrogen-containing organic redox-active compounds, such as di- and trihydric phenols, eg. As hydroquinone, pyrocatechol, hydroxyhydroquinone, gallic acid, phloroglucinol, pyrogallol or derivatives of these classes of compounds. Also, salt and complex inorganic compounds, such as salts of the metals Mn, Ti, Zr, Hf, V, Co and Ce are often used.
• transition metal salts which are selected from the group of manganese and / or cobalt salts and / or complexes, more preferably the cobalt (amine) complexes, the cobalt (acetate) complexes, the cobalt (carbonyl) complexes , the chlorides of cobalt or manganese and manganese sulfate.
• zinc compounds can be used to prevent corrosion on the items to be washed.
• Machine-washed dishes are often subject to more stringent requirements today than manually-washed dishes. So even a completely cleaned of leftovers dishes is then rated as not flawless if it has after dishwasher washing whitish, based on water hardness or other mineral salts stains that come from lack of wetting agent from dried water droplets. In order to obtain crystal-clear and spotless dishes, one uses therefore successfully today rinse aid.
• the addition of rinse aid at the end of the washing program ensures that the water runs as completely as possible from the items to be washed, so that the different surfaces at the end of the washing program are residue-free and flawless gloss.
• the automatic cleaning of dishes in household dishwashers usually includes a pre-wash, a main wash, and a rinse cycle interrupted by intermediate rinses.
• the pre-rinse cycle for heavily soiled dishes can be switched on, but only in Exceptionally chosen by the consumer, so that in most machines, a main rinse, an intermediate rinse with pure water and a rinse cycle are performed.
• the temperature of the main wash cycle varies between 40 and 65 ° C, depending on the machine type and program level selection.
• rinse aids are added from a dosing tank in the machine, which usually contain nonionic surfactants as the main constituent. Such rinse aids are in liquid form and are widely described in the art. Your task is primarily to prevent limescale and deposits on the dishes.
• compositions according to the invention can be formulated as "normal" cleaners, which are used together with commercially available supplements (rinse aid, regenerating salt).
• rinse aid regenerating salt
• These so-called “2in1" products lead to a simplification of handling and relieve the consumer of the burden of additional dosage of two different products (cleaner and rinse aid).
• the invention is characterized by an improved "cleanability" of the treated substrates in subsequent cleaning operations and by a significant reduction in the drying time compared to comparable agents without the use of sulfonic acid-containing polymers.
• Drying time in the context of the teaching according to the invention is generally understood to mean the meaning of the word, ie the time that elapses until a dish surface treated in a dishwasher has dried, but in particular the time that elapses, up to 90% with a cleaning or Rinse aid is dried in concentrated or diluted form treated surface.
• R 1 (R 2 ) C C (R 3 ) COOH (VII)
• R 1 to R 3 independently of one another are -H-CH 3 , a straight-chain or branched saturated alkyl radical having 2 to 12 carbon atoms, a straight-chain or branched, mono- or polyunsaturated alkenyl radical having 2 to 12 carbon atoms, with -NH 2 , -OH or - COOH substituted alkyl or alkenyl radicals as defined above or is -COOH or - COOR 4 , wherein R 4 is a saturated or unsaturated, straight-chain or branched hydrocarbon radical having 1 to 12 carbon atoms.
• R 5 (R 6 ) C C (R 7 ) -X-SO 3 H (VIII)
• H 2 C CH-X-SO 3 H (VIIIa)
• H 2 C C (CH 3 ) -X-SO 3 H (VIIIb)
• HO 3 SX- (R 6 ) C C (R 7 ) -X-SO 3 H (VIIIc)
• R 6 and R 7 are independently selected from -H, -CH 3 , -CH 2 CH 3 , -CH 2 CH 2 CH 3 , -CH (CH 3 ) 2
• Suitable further ionic or nonionic monomers are, in particular, ethylenically unsaturated compounds.
• the content of the polymers used according to the invention to monomers of group iii) is preferably less than 20% by weight, based on the Polymer.
• Particularly preferred polymers to be used consist only of monomers of groups i) and ii).
• copolymers according to the invention in the compositions may contain the monomers from groups i) and ii) and optionally iii) in varying amounts, all representatives from group i) with all representatives from group ii) and all representatives from group iii ) can be combined.
• Particularly preferred polymers have certain structural units, which are described below.
• These polymers are prepared by copolymerization of acrylic acid with a sulfonic acid-containing acrylic acid derivative. Copolymerizing the sulfonic acid-containing acrylic acid derivative with methacrylic acid, one arrives at another polymer whose use in the agents according to the invention is also preferred and characterized in that the agents contain one or more copolymers, the structural units of the formula X.
• maleic acid can also be used as a particularly preferred monomer from group i).
• machine dishwashing detergents which comprise one or more copolymers as ingredient b), the structural units of the formulas IX and / or X and / or XI and / or XII and / or XIII and / or XIV - [CH 2 -CHCOOH] m - [CH 2 -CHC (O) -Y-SO 3 H] p - (IX), - [CH 2 -C (CH 3 ) COOH] m - [CH 2 -CHC (O) -Y-SO 3 H] p - (X), - [CH 2 -CHCOOH] m - [CH 2 -C (CH 3 ) C (O) -Y-SO 3 H] p - (XI), - [CH 2 -C (CH 3 ) COOH] m - [CH 2 -C (CH 3 ) C (O) -Y-SO 3 H] p - (XI), - [CH 2 -
• the sulfonic acid groups may be wholly or partly in neutralized form, ie that the acidic acid of the sulfonic acid group in some or all sulfonic acid groups may be exchanged for metal ions, preferably alkali metal ions and especially sodium ions.
• metal ions preferably alkali metal ions and especially sodium ions.
• the monomer distribution of the copolymers used in the agents according to the invention in the case of copolymers which contain only monomers from groups i) and ii) is preferably in each case from 5 to 95% by weight i) or ii), particularly preferably from 50 to 90% by weight. % Of monomer from group i) and from 10 to 50% by weight of monomer from group ii), in each case based on the polymer.
• terpolymers particular preference is given to those containing from 20 to 85% by weight of monomer from group i), from 10 to 60% by weight of monomer from group ii) and from 5 to 30% by weight of monomer from group iii) ,
• the molecular weight of the polymers used in the agents according to the invention can be varied in order to adapt the properties of the polymers to the desired use.
• Preferred automatic dishwashing agents 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 content of one or more copolymers in the compositions according to the invention can vary depending on the intended use and the desired product performance, preference being given to preferred automatic dishwashing compositions according to the invention in that they contain the copolymer (s) in amounts of from 0.25 to 50% by weight. %, preferably from 0.5 to 35 wt .-%, particularly preferably from 0.75 to 20 wt .-% and in particular from 1 to 15 wt .-%.
• polyacrylates As already mentioned above, in the agents according to the invention it is particularly preferable to use both polyacrylates and the above-described copolymers of unsaturated carboxylic acids, monomers containing sulfonic acid groups and optionally further ionic or nonionogenic monomers.
• the polyacrylates were described in detail above. Particularly preferred are combinations of the above-described sulfonic acid-containing copolymers with low molecular weight polyacrylates, for example in the range between 1000 and 4000 daltons.
• Such polyacrylates are commercially available under the trade name Sokalan ® PA15 and Sokalan ® PA25 (BASF).
• a mixture of surfactants 575 and 673 from the table in the specification text was prepared by ethoxylating an unbranched and saturated C 11 alcohol in the presence of KOH as a catalyst in an autoclave at 150 ° C with ethylene oxide. After the ethylene oxide had reacted, propylene oxide was fed to the autoclave and, after the reaction, the procedure was repeated with ethylene oxide followed by propylene oxide.
• the resulting surfactant mixture can be defined by the formula CH 3 (CH 2 ) 10 -O- (CH 2 -CH 2 -O) 3 - (CH 2 -CH (CH 3 ) -O) 3 - (CH 2 -CH 2 -O) 2 - (CH 2 - CH (CH3) -O) 1.5 -H describe.
• the surfactant mixture has a diffusion coefficient of 9.1 ⁇ 10 -11 m 2 s -1 at a concentration of 0.01 g / l in distilled water.
• a plaque test is carried out in a 65 ° C. universal cleaning program in a Miele dishwasher which has been converted to continuous operation.
• the program was carried out without commercially available rinse aid (storage tank of the dishwasher emptied) and with up to 21 ° d hardened water (bypassing the ion exchanger).
• the evaluation of the covering test is made by visual inspection of the objects in a box whose walls are lined with black velvet, giving the marks 0-6. Higher values indicate less porous surfaces.
• compositions E2 and V2 were used in a universal cleaning program.
• the program was carried out without commercially available rinse aid (storage tank of the dishwasher emptied) and with up to 21 ° d hardened water (bypassing the ion exchanger).
• Dishwasher Miele G575 Detergent: 24.9 g dosed in the main rinse cycle Water hardness: 21 ° dH Program: Universal 55 ° C Cycles: 3 Dirt load: 50g minced meat
• formulation E2 is in part significantly superior to formulation V2 in filming and is at least equivalent to spotting.

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• 2001
  • 2001-07-24 DE DE10136002A patent/DE10136002A1/de not_active Withdrawn
• 2002
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  • 2002-07-13 ES ES02762357T patent/ES2301669T3/es not_active Expired - Lifetime
  • 2002-07-13 PL PL368131A patent/PL198600B1/pl unknown
  • 2002-07-13 HU HU0401494A patent/HU230491B1/hu not_active IP Right Cessation
  • 2002-07-13 EP EP02762357A patent/EP1409625B1/de not_active Expired - Lifetime
• 2004
  • 2004-01-22 US US10/763,086 patent/US7053032B2/en not_active Expired - Lifetime

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