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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/36—Organic compounds containing phosphorus
  • C11D3/361—Phosphonates, phosphinates or phosphonites
• • 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
  • C11D3/38—Products with no well-defined composition, e.g. natural products
  • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/0047—Other compounding ingredients characterised by their effect pH regulated compositions
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/0073—Anticorrosion compositions
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2075—Carboxylic acids-salts thereof
  • C11D3/2082—Polycarboxylic acids-salts thereof
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2075—Carboxylic acids-salts thereof
  • C11D3/2086—Hydroxy carboxylic acids-salts thereof
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/22—Carbohydrates or derivatives thereof
  • C11D3/221—Mono, di- or trisaccharides or derivatives thereof
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/26—Organic compounds containing nitrogen
  • C11D3/33—Amino carboxylic acids
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/36—Organic compounds containing phosphorus
  • C11D3/364—Organic compounds containing phosphorus containing nitrogen
• • 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
  • C11D3/36—Organic compounds containing phosphorus
  • C11D3/365—Organic compounds containing phosphorus containing carboxyl 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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/37—Polymers
  • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • C11D3/3719—Polyamides or polyimides
• • 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
  • C11D3/38—Products with no well-defined composition, e.g. natural products
  • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
  • C11D3/38618—Protease or amylase in liquid compositions only
• • 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
  • C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
  • C11D2111/10—Objects to be cleaned
  • C11D2111/14—Hard surfaces
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
  • C11D2111/10—Objects to be cleaned
  • C11D2111/14—Hard surfaces
  • C11D2111/16—Metals

Definitions

• Liquid detergent concentrate Liquid detergent concentrate, ready-to-use application solution, their uses and cleaning processes
• the present invention relates to a liquid cleaning agent concentrate, ready-to-use application solutions, their uses for cleaning and/or disinfecting objects and cleaning processes.
• the invention is based on the object of providing a liquid cleaning concentrate and a ready-to-use application solution thereof which enable very good cleaning performance with only a low use concentration and at the same time have high material compatibility on various materials, in particular metal surfaces.
• Claim 1 includes a liquid cleaning agent concentrate, comprising: a. at least one phosphonate , b . a first complexing agent selected from aminopolycarboxylic acids, hydroxycarboxylic acids, hydroxypolycarboxylic acids and their salts, and d . at least one enzyme, preferably proteolytic enzyme, with a pH value of the liquid detergent concentrate being 9 or >9.
• the liquid cleaning agent concentrate according to the invention can be diluted with water or a water-containing solvent mixture to form the ready-to-use application solution.
• this does not preclude the liquid cleaning concentrate itself from containing water or a water-containing solvent mixture.
• the liquid cleaning agent concentrate preferably has a pH of 9-12, more preferably 10-12, even more preferably 10-11.
• the liquid detergent concentrate comprises at least one phosphonate.
• a phosphonate is a salt of a phosphonic acid.
• the phosphonate is preferably selected from the salts of phosphonobutanetricarboxylic acid (PBTC), aminotrismethylenephosphonic acid (ATMP), 1-hydroxyethane-l,1-diphosphonic acid (HEDP), diethylenetriaminepenta(methylenephosphonic acid) (DTPMP) and mixtures of this.
• the salts can be alkali metal salts, preferably sodium and potassium salts, more preferably sodium salts. More preferably, the phosphonate is PBTC sodium salt, ATMP sodium salt, or mixtures thereof.
• the phosphonate or the phosphonate mixture in the liquid detergent concentrate is preferably in a proportion by weight of 1 to 13% by weight, more preferably 2 to 10% by weight, even more preferably 3 to 8% by weight, based on the total mass of the liquid detergent concentrate available .
• the phosphonate shows, on the one hand, the advantageous effect as a corrosion inhibitor. On the other hand, it was observed that the phosphonate serves to stabilize the cleaning formulation within the scope of the invention. Without phosphonate, considerable fluctuations in the pH value in the liquid detergent concentrate are observed when varying individual ingredients. The phosphonate thus not only serves to inhibit corrosion, but also acts as a pH buffer.
• the liquid detergent concentrate comprises a first complexing agent selected from aminopolycarboxylic acids, hydroxycarboxylic acids, hydroxypolycarboxylic acids and their salts.
• the first complexing agent is preferably selected from (hydroxyethyl) ethylenediaminetriacetic acid (HEDTA), ethylenediaminetetraacetic acid (EDTA), glutamic acid-N,N-diacetic acid (GLDA), iminodisuccinic acid (IDS), methylglycinediacetic acid (MGDA), ethylenediaminedisuccinic acid (EDDS), polyaspartic acids, nitrilotriacetic acid (NTA) , nitrilomonoacetic dipropionic acid, Nitrilotripropionic acid, ß-alaninediacetic acid (ß-ADA), diethylenetriaminepentaacetic acid, 1,3-propylenediaminetetraacetic acid, 1,2-propylenediaminetetraace
• the first complexing agent is selected from aminopolycarboxylic acids and their salts.
• the first complexing agent is preferably the sodium salt of HEDTA, EDTA, GLDA, IDS or MGDA, more preferably the sodium salt of MGDA or HEDTA.
• the first complexing agent is present in the liquid detergent concentrate in a proportion by weight of 0.5 to 10% by weight, more preferably 1 to 8% by weight, even more preferably 2 to 6% by weight, based on the total mass of the liquid Detergent concentrate available.
• the liquid detergent concentrate can further comprise a second complexing agent selected from the aminopolycarboxylic acids and their salts defined for the first complexing agent, the first and second complexing agents being different from one another.
• the second complexing agent is preferably the sodium salt of HEDTA, EDTA, GLDA, IDS or MGDA, more preferably the sodium salt of MGDA or HEDTA.
• the second complexing agent is preferably present in the liquid detergent concentrate in a proportion by weight of 0.5 to 10% by weight, more preferably 1 to 8% by weight, even more preferably 2 to 6% by weight, based on the total mass of the liquid Detergent concentrate available.
• the liquid detergent concentrate comprises the sodium salt of PBTC, the sodium salt of ATMP or a mixture thereof as the phosphonate, the sodium salt of HEDTA as the first complexing agent and preferably the sodium salt of MGDA as the second complexing agent.
• the preferred combination of the first and the second complexing agent, in addition to the phosphonate, and their selection has a significant influence on the cleaning performance and the corrosion resistance of the liquid cleaning agent. It could be observed that the cleaning performance and the corrosion-inhibiting effect are in opposite relationship to each other. Good corrosion inhibition results in poorer cleaning performance and vice versa. However, the two properties can be adjusted in the best possible way by the preferred combination of the first and second complexing agent, in addition to the phosphonate.
• the liquid detergent concentrate comprises at least one enzyme.
• the enzyme is a proteolytic enzyme or mixture of enzymes.
• the enzyme or the enzyme mixture is preferably present in the liquid detergent concentrate in a proportion by weight of from 0.05 to 4% by weight, more preferably from 0.1 to 2% by weight, based on the total mass of the liquid detergent concentrate.
• the enzyme activity is preferably 30 ⁇ 1 0 ⁇ 2 to 10 Oxl Cu 2 KNPU/g, more preferably 70 ⁇ 1 0 ⁇ 2 to 85 ⁇ 1 0 ⁇ 2 KNPU/g.
• the liquid cleaning agent concentrate can also include other components selected from surfactants, hydrotropes, alkanolamines, alkali metal hydroxides, solvents, anti-corrosion agents, fragrances and dyes.
• the surfactants can be cationic surfactants, anionic surfactants, nonionic surfactants, amphoteric surfactants and mixtures thereof.
• Cationic surfactants are selected, for example, from alkylamines and polyamines.
• anionic surfactants are alkyl carboxylates and amino acid-based surfactants.
• Nonionic surfactants are selected, for example, from alkyl alkoxylates, alkylphenol ethoxylates, fatty alcohol alkoxylates, fatty acid amides, fatty acid alkoxylates, fatty acid alkyl esters, fatty amines, alkylpolyamines, fatty amide ethoxylates and amine oxides.
• Amphoteric surfactants are selected, for example, from betaines, sultaines and glycinates. The surfactants are preferably selected from fatty alcohol alkoxylates, amino acid-based surfactants and mixtures thereof.
• the fatty alcohol alkoxylate can be selected from fatty alcohol ethoxylates (FAEO) and fatty alcohol propoxylates (FAPO), butyl etherified fatty alcohol ethoxylates (FAEOBV), butyl etherified fatty alcohol propoxylates (FAOBV), methyl etherified fatty alcohol ethoxylates (FAEOMV), methyl etherified fatty alcohol propoxylates (FAPOMV), butyl etherified fatty alcohol-based EO/PO Copolymers ( FAEOPOBV) , methyl etherified fatty alcohol based EO/PO copolymers ( FAEOPOMV) and fatty alcohol based EO/PO Copolymers (FAEOPO) .
• the fatty alcohol alkoxylate is preferably a fatty alcohol-based EO/PO copolymer.
• the fatty alcohol alkoxylate can comprise 0-10 EO units, preferably 1-4 EO units, more preferably 1-2 EO units. Furthermore, the fatty alcohol alkoxylate can comprise 0-8 PO units, preferably 1-8 PO units, more preferably 4-8 PO units. Furthermore, the fatty alcohol alkoxylate can have at least one C6-C16 fatty alcohol residue, preferably C12-C15 fatty alcohol residue.
• the fatty alcohol alkoxylate can be selected from the group consisting of C12-C15 fatty alcohol residue with 2EO/6PO units, C12-C15 fatty alcohol residue with 8EO/4PO units, methyl or butyl etherified C12-C14 fatty alcohol residue with 1 OEO -units, CI 0-C12 fatty alcohol residue with 6EO/ 8PO units, C12-C14 fatty alcohol residue with 2EO/ 4PO units, C12-C14 fatty alcohol residue with 4EO/ 5PO units methyletherified C13-C15 fatty alcohol residue with 5EO/ 3PO units and C13-C15 fatty alcohol residue with 5EO/ 3PO units.
• the fatty alcohol alkoxylate is preferably selected from C12-C15 fatty alcohol residue with 2EO/6PO units, C12-C14 fatty alcohol residue with 2EO/4PO units and C12-C14 fatty alcohol residue with 4EO/5PO units.
• the fatty alcohol alkoxylate can be present in the liquid detergent concentrate in a proportion by weight of 0.1 to 9% by weight. -%, preferably from 0.4 to 2 wt. -%, based on the total mass of the liquid detergent concentrate, be present.
• the addition of the fatty alcohol alkoxylate can dampen the effect of foam-forming surfactants.
• a desired foaming behavior of the liquid detergent concentrate can be adjusted by the choice of the fatty alcohol alkoxylate.
• a strong foaming is disadvantageous because for the applicability in ma- Fast cleaning methods, for example using an instrument washer or cleaning and disinfection devices (RDG), low-foaming components are required. Pronounced foaming during machine cleaning leads to a drop in the dosing pump pressure and ultimately to the cleaning process being aborted.
• the amino acid based surfactant may be selected from compounds having a C10-C18 saturated or monounsaturated carbon residue, preferably a C12-C16 saturated carbon residue.
• the amino acid-based surfactant can also be selected from sarcosines, taurines, glutamic acids and their salts.
• the salts can be alkali metal salts, preferably sodium and potassium salts, more preferably sodium salts.
• Preferred embodiments of the amino acid-based surfactant are selected from lauroylsarcosine, oleoylsarcosine, myristoylsarcosine, stearoylsarcosine and lauroylglutamic acid and sodium salts thereof. Lauroylsarcosine and lauroylglutamic acid and their sodium salts are particularly preferred.
• the amino acid-based surfactant can be present in the liquid detergent concentrate in a proportion by weight of 0.05 to 5% by weight. -%, preferably from 0.1 to 2 wt. -%, based on the total mass of the liquid detergent concentrate, be present.
• the liquid cleaning concentrate may include hydrotropes.
• hydrotropes are compounds that act as solubilizers. According to the invention, these are in particular amphiphilic compounds with a relatively small polar part and a larger non-polar part, which are present in both non-polar and are soluble in polar solvents.
• the compounds defined as hydrotropes according to the invention have less hydrophobic properties and a higher solubility in water.
• the polar part ensures higher solubility in water while the non-polar part acts as a functional group.
• Hydrotropes according to the invention make it possible in particular to formulate a clear and stable liquid detergent concentrate and a clear ready-to-use application solution.
• the compounds defined as surfactants are not hydrotropes.
• hydrotropes can be selected from alkyl sulfates, preferably C6-C10 alkyl sulfates and their sodium salts, more preferably sodium octyl sulfate and sodium ethylhexyl sulfate; Alkyl sulfonates, preferably C6-C10 alkyl sulfonates; aromatic sulfonates, preferably xylene sulfonate, p-toluene sulfonate and their sodium salts; propionates, preferably iso-octyliminodipropionate, n-octyliminodipropionate, caprylic and capric amphopropionate; C4-C1O-ether carboxylic acids with 4-10 EO units, preferably alkyl (8) polyether carboxylic acid with 8 EO units and alkyl (4-8) polyether carboxylic acid with 5 EO units; Alkyl sulfates,
• the hydrotrope acts to clarify the formulation within a certain temperature range and, if necessary. as a solubilizer for the fatty alcohol alkoxylate.
• the hydrotrope can in the liquid detergent concentrate in a weight fraction of 0.05 to 13 wt .-%, preferably from 0.1 to 7 wt .-%, more preferably 0.15 to 3.5 wt .-%, based on the total mass of the liquid detergent concentrate.
• the alkanolamine is preferably selected from monoethanolamine, triethanolamine, monoisopropanolamine and mixtures thereof.
• the alkanolamine or its mixture serves in particular to adjust the alkalinity of the liquid cleaning agent.
• Monoethanolamine has the benefit of being a good protein cleanser.
• the alkanolamine or mixture thereof is preferably present in the liquid detergent concentrate in a proportion by weight of 1 to 26% by weight, more preferably 4 to 18% by weight, based on the total mass of the liquid detergent concentrate.
• the alkali metal hydroxide is preferably sodium hydroxide and/or potassium hydroxide, more preferably potassium hydroxide.
• the alkali metal hydroxide serves in particular to adjust the alkalinity of the liquid cleaning agent.
• Potassium hydroxide is preferably present in the liquid detergent concentrate in a proportion by weight of 1 to 8% by weight, more preferably 2 to 5% by weight, based on the total mass of the liquid detergent concentrate.
• the solvent can be water or an aqueous solvent mixture.
• Solvent mixtures which, in addition to water, comprise organic solvents selected from ethanol, 2-propanol, glycols, glycerol and mixtures thereof are preferred.
• a preferred glycol is 1,2-propylene glycol.
• the organic solvent is in the liquid detergent concentrate in a proportion by weight of 0.5 to 10% by weight, more preferably from 3 to 7% by weight, based on the total mass of the liquid detergent concentrate.
• Water is preferably present in the liquid detergent concentrate in a proportion by weight of from 30 to 90% by weight, more preferably from 35 to 70% by weight, even more preferably from 35 to 60% by weight, even more preferably from 35 to 50% by weight, more preferably 35 to 45% by weight, based on the total mass of the liquid detergent concentrate.
• the invention is based on the surprising finding that the combination of at least one phosphonate and a first complexing agent in the liquid cleaning agent concentrate achieves very good cleaning performance with only a low use rate and at the same time high material compatibility when used on different materials, in particular on metal surfaces.
• the active ingredients contained in the liquid cleaning agent concentrate can be used in a significantly lower dosage than that of other cleaning agents known in the prior art. This is due in particular to a synergistic effect with regard to the cleaning performance achieved.
• the cleaning performance of the concentrate with regard to blood comprising the combination of phosphonate and the first complexing agent is better than that of the respective individual components.
• This relates in particular to complexing agents selected from the substance class of aminopolycarboxylic acids and their salts.
• the dosing of enzymatic, mildly alkaline, liquid cleaning agents, which preferably contain surfactants usually takes place at a water temperature of about 40° C. in machine cleaning. This is necessary because at lower temperatures the cleaning agent tends to foam too much.
• the liquid cleaning agent concentrate according to the invention makes it possible to do cold dosing directly after the water inlet, at a temperature of preferably 38° C. or less, more preferably from 18 to 35° C., even more preferably from 20 to 30° C., even more preferably from 22 to 27° C., even more preferably at about 25° C., without the program being aborted due to excessive foam development.
• Such cold water dosing is currently not possible with the liquid cleaning agents that are known from the prior art and are commercially available.
• the cold dosing of the liquid detergent concentrate has its own inventive content.
• the liquid cleaning agent concentrate is the highest possible material compatibility when used on different materials.
• the corrosion protection of stainless steel and (colour) anodised aluminum parts is important.
• the concentrate has a high level of material compatibility when used on various materials.
• the presence of the combination of phosphonate and first complexing agent leads to a significantly improved corrosion inhibition behavior on stainless steel and (color) anodized aluminum parts.
• an improved shine and an improved feel, in particular of stainless steel parts are observed.
• the phosphonate in the context of the invention not only as a complexing or Functions as a dispersing agent, but also shows beneficial effects as a corrosion inhibitor. Furthermore, considerable fluctuations in the pH value in the liquid detergent concentrate are observed without phosphonate when individual recipe ingredients are varied. This not only serves as a corrosion inhibitor, but also acts as a buffer.
• the invention also relates to a ready-to-use application solution comprising 0.05 to 99.9% of the liquid cleaning agent concentrate according to the invention, with a pH value of the ready-to-use application solution of 9 or >9, preferably 9- 12, more preferably 10-12, even more preferably 10-11.
• the ready-to-use application solution preferably comprises 0.05 to 10%, more preferably 0.1 to 1%, of the liquid detergent concentrate according to the invention.
• the phosphonate or the phosphonate mixture in the ready-to-use solution is preferably present in a proportion by weight of 0.0005 to 1.3% by weight, more preferably 0.002 to 0.1% by weight, even more preferably 0.003 to 0.08% by weight. % based on the total mass of the ready-to-use application solution.
• the first complexing agent is preferably present in the ready-to-use application solution in a proportion by weight of 0.00025 to 1.0% by weight, more preferably 0.001 to 0.08% by weight, even more preferably 0.002 to 0.06% by weight, based on the total mass of the ready-to-use application solution.
• the second complexing agent is preferably present in the ready-to-use application solution in a proportion by weight of 0.00025 to 1.0% by weight, more preferably 0.001 to 0.08% by weight, even more preferably 0.002 to 0.06% by weight, based on the total weight of the ready-to-use application solution.
• the enzyme or enzyme mixture is preferably present in the ready-to-use application solution in a proportion by weight of 0.000025 to 0.04% by weight, more preferably 0.0001 to 0.02% by weight, based on the total mass of the ready-to-use application solution .
• the fatty alcohol alkoxylate can be present in the ready-to-use solution in a proportion by weight of 0.00005 to 0.9% by weight, more preferably 0.0004 to 0.02% by weight, based on the total mass of the ready-to-use solution.
• the amino acid-based surfactant can be present in the ready-to-use solution in a proportion by weight of 0.000025 to 0.5% by weight, preferably 0.0001 to 0.02% by weight, based on the total mass of the ready-to-use solution.
• the hydrotrope can be present in the ready-to-use application solution in a proportion by weight of from 0.000025 to 1.3% by weight, preferably from 0.0001 to 0.07% by weight, even more preferably from 0.00015 to 0.035% by weight. based on the total mass of the ready-to-use application solution.
• the alkanolamine or its mixture can be present in the ready-to-use solution in a weight fraction of 0.0005 to 2.6% by weight, preferably 0.004 to 0.18% by weight, based on the total weight of the ready-to-use solution.
• the alkali metal hydroxide can be present in the ready-to-use solution in a proportion by weight of 0.0005 to 0.8% by weight, preferably 0.002 to 0.05% by weight, based on the total mass of the ready-to-use solution.
• the organic solvent can be present in the ready-to-use solution in a proportion by weight of 0.00025 to 1.0% by weight, preferably 0.003 to 0.07% by weight, based on the total mass of the ready-to-use solution.
• Water can be present in the ready-to-use application solution in a proportion by weight of 90.0 to 99.985% by weight, preferably 95.0 to 99.98% by weight, more preferably 99.6 to 99.96% by weight, based on the total mass of the ready-to-use application solution.
• the subject matter of the invention is also the use of the liquid cleaning agent concentrate according to the invention or the ready-to-use application solution according to the invention for cleaning and/or disinfecting objects, preferably for machine cleaning and/or disinfecting objects.
• the liquid cleaning agent concentrate or the ready-to-use solution is preferably dosed cold, more preferably at a temperature of 38°C or less, even more preferably from 18 to 35°C, even more preferably from 20 to 30°C, even more preferably from 22 to 27°C, even more preferably at about 25°C.
• cleaning and/or disinfection expresses the fact that the liquid cleaning agent concentrate and the ready-to-use application solution both in the combination of cleaning and disinfection can be used in a single process step as well as in program sequences in which a cleaning step is followed by a separate disinfection step.
• the objects are preferably medical and/or surgical instruments and/or apparatus.
• the subject matter of the invention is also the method for cleaning medical and/or surgical instruments and/or apparatus, characterized by the following steps: a) preparing a ready-to-use application solution according to one of claims 11 or 12, b) cleaning the medical and/or or surgical instruments and/or apparatus with the ready-to-use application solution.
• the ready-to-use application solution is preferably prepared cold, more preferably at a temperature of 38° C. or less, even more preferably from 18 to 35° C., even more preferably from 20 to 30° C., even more preferably from 22 to 27°C, more preferably at about 25°C.
• the ready-to-use application solution can be prepared by dosing the liquid cleaning concentrate according to the invention.
• the ready-to-use application solution can also be prepared manually starting from the liquid detergent concentrate according to the invention.
• FIG. 2 Current density-potential curves of the anodic partial reactions on test specimens of stainless steel quality 1.4034, with the measurements using batch (I) according to the invention, batch (II) without phosphonate and salt solutions of different pH values being shown as comparisons
• FIG. 3 Current density-potential curves of the anodic partial reactions on test specimens of stainless steel quality 1.4031, with the measurements using batch (I) according to the invention, batch (II) without phosphonate and salt solutions of different pH values being shown as comparisons
• Figure 4 Location of the corrosion potentials, i.e. the current density minima, (top) and graphic results of the panel analysis with test specimens of stainless steel quality 1.4034 (bottom)
• FIG. 5 Results of the immersion cleaning tests with batch (I) according to the invention and batch (II) without phosphonate as a comparison with heparinized sheep blood as soiling
• FIG. 6 Cleaning performance of ready-to-use application solutions comprising phosphonate and MGDA with regard to sheep blood when varying a second complexing agent, plotted in comparison with log (K) literature values for Ca 2+ and Mg 2+
• FIG. 7 Cleaning performance and corrosion behavior of ready-to-use application solutions comprising phosphonate and MGDA with regard to sheep blood when varying a second complexing agent, plotted in comparison with log (K) literature values for Ca 2+ and Mg 2+
• FIG. 8 Pressure and temperature curves for the cold water metering of a liquid detergent concentrate according to the invention in a concentration of 3 ml/l at 25°C
• FIG. 9 Pressure and temperature curves for the cold water dosing of the commercially available cleaning agents known from the prior art with the respective standard recommended concentration at 25°C
• result Figure 1 shows the results of the corrosion tests with gray cast iron chips GG25 based on DIN 51360 Part 2 at different concentrations of the application solutions (sample 1: Na-ATMP, sample 2: Na-HEDP, sample 3: Na-PBTC, sample 4: Na-Glu - coheptonate, sample 5: Na-DTPMP, sample 6: Na-HEDTA; Sample Ref: comparison without additive), where FIG Show application solutions.
• sample 1 Na-ATMP
• sample 2 Na-HEDP
• sample 3 Na-PBTC
• sample 4 Na-Glu - coheptonate
• sample 5 Na-DTPMP
• sample 6 Na-HEDTA
• Sample Ref comparison without additive
• the phosphonate acts as a corrosion inhibitor. Another effect of the phosphonate can be observed with a systematic variation of other components, e.g. the complexing agent, with an otherwise constant composition of the detergent concentrate.
• Table 1 pH values when varying complexing agents in the presence or absence of phosphonate (PBTC)
• Electrochemical corrosion measurements and immersion cleaning tests with heparinized sheep blood were carried out.
• Approach (I) is a liquid detergent concentrate according to the invention, which was made up of the following components:
• Batch (II) is a comparison without phosphonate with an otherwise identical formulation, the pH being adjusted identically to batch (I). Based on the tests carried out, the synergistic effect of the phosphonate in combination with aminopolycarboxylates as a complexing agent can be clearly demonstrated.
• Electrochemical corrosion measurements a. measurement method
• the open circuit potential (OCP) of the system was determined. This took place over a period of 600 s in order to ensure that the equilibrium was sufficiently established.
• the current density-potential curve was then recorded over a potential range from -0.1 to +1.5 V in relation to the measured OCP. For this purpose, a step size of 0.001 V was set at a scanning speed of 0.01 V/s. b. execution
• a measuring setup consisting of an Autolab PGSTAT204 potentiostat and a corrosion measuring cell for flat samples (Metrohm AG) with a three-electrode arrangement and a silver/silver chloride reference electrode was used.
• Ground stainless steel sheets of the qualities 1.4034 and 1.4301 were used as test specimens.
• Electrochemical corrosion tests were carried out on test specimens of the two stainless steel qualities 1.4034 (chromium steel; less corrosion-resistant; cf. Figure 2) and 1.4301 (chromium-nickel steel; more corrosion-resistant; cf. Figure 3).
• a 10% application solution of batches (I) and (II) was prepared in a 0.9% solution of sodium chloride (corresponding to physical saline solution) in order to obtain the required corrosive conditions and current density potential curves were recorded.
• the pH values were 10.5 for batch (I) with phosphonate and 11.5 for batch (II) without phosphonate.
• Protamine sulfate or protamine chloride ACILA GmbH Marker dots 0 8mm green
• the heparinized sheep blood and the protamine sulphate/protamine chloride were stored in a climatic cabinet at 6° C. until the test.
• the sheep's blood and the protamine sulphate/protamine chloride should have reached a temperature of 20 °C.
• the fat-free stainless steel plates were stretched on a rack and should be aligned horizontally as straight as possible.
• the deionized water must completely cover the bottom of the dish placed horizontally.
• the bowl was min. Covered (atmosphere conditioning) 2 hours before launch.
• the wet test specimens with the coagulated blood stains were removed from the plastic tray and dried at room temperature.
• the quality of the dry test plaques was checked. Plates with air bubbles on the soiling or showing irregularities were sorted out. A green marker was glued to each of the other tiles.
• the test plaques were stored in test tubes with screw caps at room temperature until they were used in the immersion test.
• Test slides Heparinized, reactive sheep blood
• FIG. 5 shows the results of the immersion cleaning tests with batch (I) according to the invention and batch (II) without phosphonate, with heparinized sheep blood being used as soil.
• FIG. 5 shows, a somewhat better cleaning result in the removal of heparinized sheep blood was achieved with the batch (I) according to the invention than with the comparative batch (II), which contains no phosphonate and only aminopolycarboxylates as complexing agents.
• the pH of the use solution according to the invention from batch (I), at 10.5 was even somewhat lower than that of the use solution from batch (II), for which a pH of 10.7 was determined.
• the liquid cleaning concentrate according to the invention and its ready-to-use application solution from batch (I) show, compared to the cleaning concentrate and its application solution from batch (II) without phosphonate, improved corrosion protection with regard to stainless steel, better material compatibility e.g. with aluminum, and improved cleaning performance with regard to blood , despite a lower pH, which usually has the opposite effect.
• a buffering effect of the desired pH value due to the presence of the phosphonate was found over a wide range of concentrations.
• the complexing agent MGDA was in a liquid cleaning concentrate according to the invention in addition to the contained phosphonate PBTC each with a second complexing agent (ie HEDTA, EDDS, IDS, GLDA, polyaspartate, EDTA) and combined all test approaches in this series examined the corrosion inhibition properties and the cleaning performance with regard to sheep blood.
• a second complexing agent ie HEDTA, EDDS, IDS, GLDA, polyaspartate, EDTA
• the corrosion tests were carried out with gray cast iron chips GG25 based on DIN 51360 Part 2 at a concentration of the application solution of 2.5%. The tests were carried out and evaluated analogously to the corrosion tests on the phosphonates described above.
• test bodies with heparinized, reactivated sheep blood were produced as previously described.
• Test slides Heparinized , react . sheep blood Immersion cleaning tests were carried out with both test batches at a dosage of 2.0 ml/l in deionized water and a temperature of 45° C. with a contact time of 4 minutes. Four individual experiments were carried out with each formulation variant, the residue was colored with a 0.1 g amido black solution and the area was determined. c. Evaluation
• the cleaning results were evaluated visually using the dried plaques. In addition, the evaluation was also carried out here by integrating the area relative to other individual tests.
• the dosing of enzymatic, mildly alkaline, liquid cleaning agents usually takes place at a water temperature of about 40° C. for machine cleaning. This is necessary because at lower temperatures the cleaning agents tend to foam too much.
• the disadvantage of dosing at a temperature of around 40 °C is that the running time of the cleaning programs is extended, since there is a certain amount of time for heating up from the inlet temperature (usually around 18-22 °C) to a temperature of 40 ° C must be awaited before the cleaning agent can take effect .
• the liquid detergent concentrate according to the invention and the ready-to-use application solution enable cold dosing immediately after the water has been inflowed, preferably at a temperature of 38° C. or less, even more preferably from 18 to 35° C., even more preferably from 20 to 30° C. even more preferably from 22 to 27° C., even more preferably at about 25° C., without the program being terminated due to excessive foam development. This is currently not possible with the cleaning agents known from the prior art.
• FIG. 8 shows the correct and complete program sequence (pressure and temperature curves) from a cleaning and disinfection system (UniClean PL II from MMM).
• the liquid according to the invention was metered Detergent concentrate with a concentration of 3 ml/l at 25°C.

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• 2021
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