EP2843034B1 - Produit de nettoyage ayant un effet de détartrage - Google Patents

Produit de nettoyage ayant un effet de détartrage Download PDF

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Publication number
EP2843034B1
EP2843034B1 EP14182845.9A EP14182845A EP2843034B1 EP 2843034 B1 EP2843034 B1 EP 2843034B1 EP 14182845 A EP14182845 A EP 14182845A EP 2843034 B1 EP2843034 B1 EP 2843034B1
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EP
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Prior art keywords
cleaning agent
acid
skin
corrosive
agent according
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EP14182845.9A
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German (de)
English (en)
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EP2843034A1 (fr
Inventor
Kadira Nedic
Andreas Brakemeier
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Werner and Mertz GmbH
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Werner and Mertz GmbH
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • 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
    • C11D3/34—Organic compounds containing sulfur
    • C11D3/3409—Alkyl -, alkenyl -, cycloalkyl - or terpene sulfates or sulfonates
    • 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

Definitions

  • the invention relates to a detergent with decalcification and its use in particular as a sanitary cleaner or toilet cleaner for domestic or commercial applications.
  • WO 2007/092800 A2 describes a cleaning composition for cleaning soils on surfaces of microelectronic devices, wherein a composition contains 1% by weight of methanesulfonic acid, 10% by weight of citric acid and 9.2% of dodecylbenzenesulfonic acid.
  • CN101372649 A describes a sanitary cleaner using citric acid, methanesulfonic acid and a nonionic surfactant as well as an anionic surfactant.
  • Typical sanitary cleaners with high limescale solubility which can also be used efficiently to remove larger limescale structures, contain strong acids such as hydrochloric acid, phosphoric acid, sulfamic acid, formic acid, optionally also in combination or combined with weaker acids.
  • strong acids such as hydrochloric acid, phosphoric acid, sulfamic acid, formic acid, optionally also in combination or combined with weaker acids.
  • Such sanitary cleaners are usually very acidic (pH values ⁇ 2.0) and often have skin corrosive properties.
  • the corrosive action, especially of strong acids is often intensified in sanitary cleaners by the additional use of surfactants, which are used for the simultaneous removal of grease and lime soap residues as well as for surface wetting.
  • the object of the invention is to provide a cleaning agent with kalklösenden properties, which has no or only a slight skin corrosivity despite high descaling effect.
  • the agent should also have a high Kalkseifenentfemungshack and meet high ecological requirements.
  • detergents are proposed with an acid combination, which show high product performance and yet are user-friendly, being used as the base acids citric acid and / or lactic acid in combination with methanesulfonic acid, which at least one anionic surfactant is added.
  • methanesulfonic acid Due to its high acid strength, methanesulfonic acid is able to significantly increase the lime dissolving power or the rate of limescale removal of citric acid and / or lactic acid solutions already by adding low concentrations. Lactic acid and in particular citric acid are user-friendly due to their only moderate or weak skin irritating effect, but often have not sufficiently high lime-dissolving properties due to their only average acidity. Methanesulfonic acid, on the other hand, has skin-corrosive properties, but due to its high acidity, it increases the lime-dissolving properties of citric acid and / or lactic acid even in low concentrations. By suitable combination of the acid concentrations under control of the methanesulfonic acid fraction, the skin-irritating or corrosive effect of the descaling agent can be controlled.
  • anionic surfactants have a generally good skin compatibility.
  • anionic surfactants lead to a weakening of the skin corrosivity, in particular of the acid combinations indicated above, and thus show opposing properties, such as conventional nonionic surfactants.
  • Anionic surfactants obviously also reduce the aggressiveness of the acids to the skin.
  • the scouring capacity of the cleaning agent achieved with such anionic surfactants is significantly higher than the otherwise identically composed cleaning agent which, however, hitherto contains conventional nonionic surfactants whose use increases the skin corrosivity of an acidic cleaning agent. Furthermore, the achieved Kalkseifenlinatesti the cleaning agent when using anionic surfactants is often above that of the otherwise identical composition with conventional nonionic surfactants.
  • the cleaning agent according to the invention therefore contains an anionic surfactant or more anionic surfactants. It is also possible to provide mixtures with nonionic and / or amphoteric surfactants.
  • the concentration of citric acid and / or lactic acid with added methanesulfonic acid is advantageously adjusted so that a pH of ⁇ 2.0 results.
  • a strong acidic aqueous detergent having a pH ⁇ 1.5 and especially pH ⁇ 1.0 for the undiluted product, e.g. preferably 0.6 or 0.8, provided.
  • the detergents according to the invention are not skin corrosive according to the validated test method OECD 431.
  • Citric acid or lactic acid may be present in the range of 3 to 15% by weight and combined with 0.5 to 8% by weight, especially up to 5% by weight, preferably to 3% by weight of methanesulfonic acid.
  • the proportion of citric acid may be in particular 5 to 12 wt .-%.
  • Citric acid is preferably used in a proportion of 6 to 10 wt .-%, in particular 6 to 8 wt .-%.
  • a proportion of 4 to 10% by weight and more preferably to about 8% by weight is preferably used.
  • the concentration of methanesulfonic acid may be up to 8 wt .-% and is preferably limited to a maximum of 5 wt .-%, in particular to about 3 wt .-%.
  • the proportion of methanesulfonic acid is preferably 0.5 to 2.95% by weight, for example 2.5 to 2.95% by weight. Another preferred range is about 1.5 to 2.95 wt .-%.
  • a cleaning agent according to the invention for example formic acid, acetic acid, gluconic acid, glycolic acid, succinic acid, adipic acid, maleic acid, tartaric acid, malic acid, amidosulfonic acid or phosphoric acid and mixtures thereof
  • the agent according to the invention contains only citric acid and / or lactic acid and methanesulfonic acid
  • Anionic surfactants according to the invention may be aliphatic sulfates such as fatty alcohol sulfates, iso-alcohol sulfates (C8-C18), fatty alcohol ether sulfates (C8-C18), dialkyl ether sulfates, monoglyceride sulfates and aliphatic sulfonates such as alkanesulfonates, olefinsulfonates, ether sulfonates, ester sulfonates and lignos
  • alkylbenzenesulfonates sulfosuccinates (sulfosuccinic esters), sulfosuccinamates, sulfosuccinamides, fatty acid isethionates, acylaminoalkanesulfonates (fatty acid taurides), fatty acid sarcosinates and alkyl (ether) phosphates and ⁇ -sulfofatty acid salts, acylglutamates, monoglyceride disulfates and alkyl ethers of glycerol disulfate.
  • the cleaning agent according to the invention contains an anionic surfactant or more anionic surfactants from the group of fatty alcohol sulfates or iso-alcohol sulfates (C8-C14) and fatty alcohol ether sulfates (C8-C14) and mixtures of these. Preference is given to n-octyl sulfate or iso-octyl sulfate.
  • Fatty alcohol sulfates or iso-alcohol sulfates are products of sulfation of corre sponding alcohols, while fatty alcohol ether sulfates are products of sulfation of alkoxylated alcohols
  • alkoxylated alcohols the reaction products of alkylene oxide, preferably ethylene oxide, with alcohols, in the context of the present invention preferably with longer-chain alcohols (C8-C18)
  • n moles of ethylene oxide and one mole of alcohol give, depending on the reaction conditions, a complex mixture of addition products of different degrees of ethoxylation.
  • Another embodiment of the alkoxylation involves the use of mixtures of the alkylene oxides, preferably of the mixture of ethylene oxide and propylene oxide.
  • Preferred fatty alcohol ether sulfates are the sulfates of lower ethoxylated fatty alcohols having 1 to 4 ethylene oxide units (EO), in particular 1 to 3 EO, for example 2 EO
  • EO ethylene oxide units
  • anionic surfactants are usually used as salts, but also as acid.
  • the salts are preferably alkali metal salts, alkaline earth metal salts, ammonium salts and mono-, di- or trialkanolammonium salts, for example mono-, di- or triethanolammonium salts, in particular lithium, sodium, potassium or ammonium salts, particularly preferably sodium or potassium salts, most preferably sodium salts such as octyl sulfate Na salt.
  • the total concentration of an anionic surfactant or surfactants in the cleaning agent is preferably in the range up to 5 wt .-%, preferably up to 3 wt .-%, particularly preferably up to 1 wt .-%, such as 0.75 to 0.95 wt %
  • the surfactants are preferably selected from the group of fatty alcohol sulfates or iso-alcohol sulfates (C8-C14) and fatty alcohol ether sulfates (C8-C14), in particular n-octyl sulfate (C8).
  • the detergent may comprise mixtures of these.
  • a detergent according to the invention comprises, for example, citric acid or lactic acid in the range of about 4 to 8% by weight in combination with about 0.5 to 2.95% by weight of methanesulfonic acid, the content of anionic surfactant being about 0.75 to 0.95 wt .-% is.
  • the pH value is ⁇ 1.5 and the cleaning agent is not skin corrosive according to OECD 431.
  • Preferred cleaning agents contain from 4 to 10% by weight, in particular from 6 to 8% by weight, preferably 7.1% by weight, of lactic acid, 0.5 to 2.95 wt .-%, preferably 2.8 wt .-% methanesulfonic acid and 0.8 to 0.95% by weight of an anionic surfactant, in particular n-octyl sulfate (C8), wherein the pH is ⁇ 1.5, in particular 0.6, wherein the cleaning agent is not skin corrosive.
  • an anionic surfactant in particular n-octyl sulfate (C8), wherein the pH is ⁇ 1.5, in particular 0.6, wherein the cleaning agent is not skin corrosive.
  • Another preferred cleaning agent contains 6 to 15 wt .-%, in particular 6 to 12 wt .-%, preferably 8 wt .-% citric acid, 0.5 to 2.95 wt .-%, methanesulfonic acid and 0.8 to 0.95% by weight of an anionic surfactant, in particular n-octylsulfate (C8), wherein the pH is ⁇ 1.5, in particular 0.6, wherein the cleaning agent is not skin corrosive
  • Another object of the invention is the use of anionic surfactants for damping the symbolkonosiven action of a strongly acidic decalcifying agent Especially when the agent based on citric acid and / or lactic acid with methanesulfonic acid, as stated above, is constructed, in addition to the damping of skin corrosive / skin-initiating Effect also achieved a high lime and Kalkseifenlinatecrypt the acid mixtures especially with n-octyl sulfate (C8).
  • the descaling agent according to the invention is particularly suitable for use as a sanitary or toilet cleaner
  • the cleaning agent according to the invention may comprise one or more of customary auxiliaries and additives, preferably selected from the group comprising water-soluble solvents, dyes, fragrances, disinfectants and preservatives, corrosion inhibitors, complexing agents for alkaline earth ions, sequestering agents and enzymes
  • customary auxiliaries and additives preferably selected from the group comprising water-soluble solvents, dyes, fragrances, disinfectants and preservatives, corrosion inhibitors, complexing agents for alkaline earth ions, sequestering agents and enzymes
  • suitable emulsifiers are added.
  • the cleaning agent may contain one or more water-soluble, organic solvents, preferably from the group of alcohols or glycols or glycol ethers.
  • the amounts preferably added are from 0.05 to 10% by weight, more preferably from 0.1 to 5% by weight.
  • Suitable water-soluble solvents are e.g. the alcohols ethanol, n-propanol, isopropanol, furthermore the ether compounds of ethylene glycol or diethylene glycol or propylene glycol or dipropylene glycol with methanol, ethanol, n- and iso-propanol, n- and iso-butanol, e.g.
  • Ethylene glycol butyl ether (BG), diethylene glycol ethyl ether (EDG), diethylene glycol butyl ether (BDG), propylene glycol methyl ether (PM), propylene glycol n-butyl ether (PnB, 3-butoxy-2-butanol), dipropylene glycol methyl ether (DPM), dipropylene glycol n-propyl ether (DPnP).
  • DPM propylene glycol n-butyl ether
  • DPM dipropylene glycol n-propyl ether
  • DPM dipropylene glycol n-propyl ether
  • DPM dipropylene glycol n-propyl ether
  • DPM dipropylene glycol n-propyl ether
  • DPM dipropylene glycol n-propyl ether
  • DPM dipropylene glycol n-propyl ether
  • DPM dipropylene glycol n-but
  • the cleaning agent may contain one or more perfumes, preferably in an amount of from 0.01 to 1% by weight, preferably from 0.05 to 0.5% by weight, particularly preferably from 0.1 to 0.3% by weight, and / or one or more dyes, preferably in an amount of from 0.0001 to 0.1% by weight, preferably from 0.0005 to 0.05% by weight, particularly preferably from 0.001 to 0.01% by weight
  • a particular form of cleaning is the disinfection.
  • the cleaning agent therefore contains one or more antimicrobial active substances. Disinfection is understood to mean the killing of infectious germs. The extent of disinfection depends on the antimicrobial effect of the agent used, which decreases with decreasing antimicrobial content or increasing dilution of the agent for use.
  • Preferred antimicrobial agents are preferably selected from the group comprising ethanol, n-propanol, i-propanol, phenoxyethanol, lactic acid (if not already present as active ingredient), benzoic acid, salicylic acid and optionally antimicrobial quaternary surface-active compounds
  • the cleaning agent may contain one or more metal corrosion inhibitors, preferably in an amount of from 0.1 to 5% by weight, preferably from 0.5 to 3% by weight, particularly preferably from 0.5 to 2% by weight
  • Suitable corrosion inhibitors are, for example, the following substances: cyclohexylamines, diammonium phosphates, dilithium oxalates, dimethylamino methylpropanol, dipotassium oxalates, dipotassium phosphates, disodium phosphates, disodium pyrophosphates, disodium tetrapropenyl succinates, hexoxyethyl diethylammonium, phosphates, nitromethanes, potassium silicates, sodium aluminates, sodium hexametaphosphates, Sodium Metasilicate, Sodium Molybdate, Sodium Nitrites, Sodium Oxalate, Sodium Silicate, Stearamidopropyl Dimethicone, Tetrapotassium Pyrophosphate, Tetrasodium Pyrophosphate, Triisopropanolamine.
  • the cleaning agent may also contain one or more complexing agents, preferably in an amount of from 0.1 to 10% by weight, preferably from 0.2 to 5% by weight, particularly preferably from 0.5 to 3% by weight
  • complexing agents are ingredients that are capable of complexing and inactivating metal ions to prevent their detrimental effects on the stability or appearance of the agents, for example clouding.
  • Complexing the ions of heavy metals such as iron or copper delays the oxidative decomposition of the finished agents.
  • the complexing agents support the cleaning effect.
  • Suitable are, for example, the following according to INCI designated complexing agents: Aminotrimethylene phosphonic acid, beta-alanines diacetic acid, calcium disodium EDIA, citric acid, cyclodextrin, cyclohexanediamines tetraacetic acid, diammonium citrate, diammonium EDTA, diethylenetriamine pentamethylene phosphonic acid, dipotassium EDTA, disodium azacycloheptanes diphosphonates, Disodium EDTA, Disodium Pyrophosphate, EDTA, Etidronic Acid, Galactic Acid, Gluconic Acid, Glucuronic Acid, HEDTA, Hydroxypropyl Cyclodextrin, Methyl Cyclodextrin, Pentapotassium Triphosphate, Pentasodium Aminotrimethylene Phosphonate, Pentasodium Ethylenediamine Tetra- methylene Phosphonate, Pentasodium Pentetate,
  • the agent may also contain enzymes, preferably proteases, lipases, amylases, hydrolases and / or cellulases. They may be added to the composition according to the invention in any form established according to the prior art. In the case of liquid or gel-containing compositions, these include, in particular, solutions of the enzymes, advantageously as concentrated as possible, sparing in water and / or added with stabilizers.
  • enzymes preferably proteases, lipases, amylases, hydrolases and / or cellulases.
  • the method is based on the recommendation for quality assessment for bathroom cleaners (IKW, version 2002) and the recommendation for quality assessment of acidic toilet cleaners (IKW, version 1999)
  • the plates are then immersed in a defined volume of decalcifying liquid for 10 minutes (a 4-fold determination is made for statistical verification of the method). After thoroughly rinsing the patten with demineralized water and re-drying at 105 ° C, the weight loss of each marble slab is determined by weighing. The measured values from the multiple determinations are averaged and logged. The amount of marble removed (CaCO 3 ) corresponds to the lime-release capacity of the bath cleaner.
  • the temperature of the decalcifying liquid and the marble slabs should be between 20 and 23 ° C during the experiment.
  • Kalkseifenlieresti is based on the recommendation for quality evaluation for bathroom cleaners (IKW, version 2002)
  • a defined amount of a dirt suspension is applied. This consists of calcium stearate (lime soap), dye (carbon black) and a solvent After application, the tile is dried at 180 ° C. The solvent evaporates and the molten lime soap remains after cooling with its bound soot back as a solid, smooth layer. Weighing determines the amount of dirt applied.
  • the soiled surface is divided with a stencil into twelve equal rectangular fields (3 rows of 4 fields each).
  • the three rows are now wetted with the various sanitary cleaner.
  • the contact time of the cleaners on the 4 fields of a row varies from 10 min, 7.5 min, 5 min to 2.5 min. After these defined contact times graze the areas below running water with the help of a sponge cleaned.
  • the cleaning result on the individual fields is documented by means of a photo and assessed visually.
  • a high degree of Kalkseifenlettessti or Kalkseifenlinate shows up in as white areas as possible after the shortest possible contact times.
  • the Skin Ingression Test according to OECD 431 reliably identifies potential skin corrosive effects of substances or preparations.
  • This in vitro method utilizes epidermal 3D skin culture models from recultured human skin
  • the test substance / preparation acts simultaneously on a negative control (distilled water) and a positive control (8 mol / l potassium hydroxide) on the skin tissue.
  • a negative control distilled water
  • a positive control 8 mol / l potassium hydroxide
  • the enzyme activity in the skin tissue is determined via a color reaction.
  • Increasing skin tissue damage (“corrosion") leads to a decrease in enzyme activity or dye production.
  • the specific thresholds for residual enzyme activity or dye production are not reached after 3 minutes and 1 hour, the test substance is classified as "corrosive to the skin”. If these limit values are exceeded, the test substance is correspondingly classified as "non-corrosive to the skin”.
  • exemplary sanitary cleaners are preferably suitable for surface decalcification in the sanitary sector, eg for tiles, sinks, toilet bowls, urinals or fittings.
  • the cleaner in appropriate dilutions with water (1: 1 to 1: 3), the cleaner is of advantage in kettles, coffee machines, etc. for the removal of calcium deposits.
  • descaling agent no. 1 has a high calendering power based on the combination of lactic acid and methanesulfonic acid. Its lime soap dissolving power, however, remains very low due to lack of surfactants
  • the anionic surfactant maintains the high laking power of the otherwise identical but surfactant-free descaling agent. It also increases the Kalkseifenlettesstinum at the same time much stronger than the otherwise identical cleaning agent with a conventional nonionic surfactant addition also results only on addition of the anionic surfactant non-corrosive property.
  • Descaling agent # 4 has a high level of limescale associated with non-corrosive property, despite the pH of 0.6.
  • a comparison of the cleaning agents No. 5 and No. 6 shows the superior effect of an anionic surfactant in relation to a nonionic surfactant with respect to laking and lime soap power and non-corrosive property.
  • the skin irritation effect of detergent No. 6 is further reduced compared to descaling agent no.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
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  • Detergent Compositions (AREA)
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Claims (12)

  1. Produit de nettoyage présentant une combinaison de 3 à 15% en poids d'acide citrique et de 0,5 à 5 % en poids d'acide méthanesulfonique en liaison avec au moins un tensioactif anionique du groupe des sulfates d'alcool gras en C8 à C14, c'est-à-dire des iso-sulfates d'alcool en C8 à C14 et/ou des sulfates d'éther d'alcool gras en C8 à C14, le produit de nettoyage ne provoquant pas de corrosion cutanée conformément à la procédure d'essai validée OECD 431.
  2. Produit de nettoyage présentant une combinaison de 3 à 15% en poids d'acide lactique et 0,5 à 5 % en poids d'acide méthanesulfonique en liaison avec au moins un tensioactif anionique du groupe des sulfates d'alcool gras en C8 à C14, c'est-à-dire des iso-sulfates d'alcool en C8 à C14 et/ou des sulfates d'éther d'alcool gras en C8 à C14, le produit de nettoyage ne provoquant pas de corrosion cutanée conformément à la procédure d'essai validée OECD 431.
  3. Produit de nettoyage suivant la revendication 1, le produit contenant 3 à 10% en poids et notamment 3 à 8 % en poids d'acide citrique.
  4. Produit de nettoyage suivant la revendication 2, le produit contenant 1 à 10% en poids et notamment 1 à 8% en poids d'acide lactique.
  5. Produit de nettoyage suivant une des revendications précédentes, le produit contenant 0,5 à, 3 % en poids d'acide méthanesulfonique.
  6. Produit de nettoyage suivant une des revendications précédentes, le produit présentant une valeur pH inférieure à 2,0, de préférence une valeur de pH inférieure à 1,5 et notamment une valeur pH inférieure à 1,0.
  7. Produit de nettoyage suivant la revendication 1 ou 2, dans lequel le tensioactif anionique est un sulfate d'octyle (en C8).
  8. Produit de nettoyage suivant une des revendications précédentes, le produit contenant jusqu'à 5% en poids, de préférence, jusqu'à 3% en poids et en particulier jusqu'à 1% en poids par rapport à la concentration totale d'un tensioactif anionique ou de plusieurs tensioactifs anioniques.
  9. Produit de nettoyage suivant une des revendications précédentes, le produit contenant un ou plusieurs des adjuvants et additifs habituellement utilisés dans les produits de nettoyage, sélectionnés de préférence parmi le groupe comprenant des solvants solubles dans l'eau, des colorants, des parfums, des agents de désinfection et de conservation, des inhibiteurs de corrosion, des agents complexants, des agents séquestrants et/ou des enzymes.
  10. Produit de nettoyage suivant une des revendications précédentes 2 et 4 à 9, le produit contenant 1 à 10% en poids, de préférence 4 à 10% en poids, notamment 4 à 8 % en poids, de préférence 7,1% en poids d'acide lactique, 0,5 à 2,95% en poids, de préférence, 1,5 à 2,95 % en poids, notamment 2,8 % en poids d'acide méthansulfonique et 0,8 à 0,95 % en poids de n-octylsulfate (en C8), la valeur Ph étant inférieure à 1,5, notamment inférieure à 1,0, le produit de nettoyage ne provoquant pas de corrosion cutanée.
  11. Produit de nettoyage suivant une des revendications précédentes 1, 3 et 5 à 9, le produit contenant 8 à 15 % en poids, de préférence 5 à 12 % en poids, notamment de 6 à 8 % en poids, de préférence 8% en poids d'acide citrique, 0,5 à 2,95 % en poids, de préférence 1,5 à 2,95% en poids d'acide méthanesulfonique et 0,8 à 0,95 % en poids de n-octylsulfate (en C8), la valeur Ph étant inférieure à 1,0, le produit de nettoyage ne provoquant pas de corrosion cutanée.
  12. Utilisation d'un tensioactif anionique suivant une des revendications précédentes pour atténuer l'effet de corrosion cutané d'un détartrant fortement acide comme nettoyant pour sanitaires ou WC.
EP14182845.9A 2013-08-30 2014-08-29 Produit de nettoyage ayant un effet de détartrage Active EP2843034B1 (fr)

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DE102013217325.3A DE102013217325A1 (de) 2013-08-30 2013-08-30 Reinigungsmittel mit Entkalkungswirkung

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EP2843034B1 true EP2843034B1 (fr) 2018-01-31

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WO2020205360A1 (fr) 2019-04-02 2020-10-08 The Clorox Company Procédé de fabrication de substrats multicouches comprenant des couches en sandwich et du polyéthylène

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