EP0009193B1 - Liquid cleanser for hard surfaces - Google Patents

Abstract

1. A liquid cleaning agent for hard surfaces based on aqueous solutions of surfactants, builders and organic polymers, characterized in that it contains as organic polymers from 0.05 to 0.5 % by weight and preferably from 0.08 to 0.4 % by weight of water-soluble polyethylene glycols having a molecular weight of from 300,000 to 4,000,000 and preferably from 500,000 to 1,000,000.

Description

Modern prefabricated construction methods, easy-care kitchen, bathroom and cellar furnishings, plastic-veneered furniture, the increasing equipment of households with freezers, refrigerators, washing machines and dishwashers, i.e. Devices with enamelled or plastic-coated large-area metal walls have increased the demand for liquid all-purpose cleaning agents for household use in recent years. But the use of such agents has also become increasingly important in commercial enterprises. It is required that it be as simple and problem-free as possible. The agents are usually marketed as preferably aqueous concentrates. They can be applied diluted or undiluted to a damp, absorbent cloth of any nature or a sponge, which is then used to wipe the hard surfaces made of metal, lacquered wood, plastic, ceramic products such as porcelain, tiles, tiles and the like, thereby causing dust, grease and stains be removed. It is desired that this surface treatment does not leave any detergent stains and stripes behind and does not require post-treatment with a damp cloth soaked in clear water.

Numerous cleaning agents of this type are already known from the market and from the literature. In addition, it is also known from the patent literature to add different polymers to these cleaning agents to increase their cleaning power.

DE-AS 10 51 440 discloses liquid cleaning agents which are used for all purposes, but especially for washing textiles, and to increase the dirt-carrying capacity, inter alia, water-soluble cellulose or starch derivatives or else water-soluble or colloidally soluble polymers, such as polyvinylpyrrolidone. can contain.

AT-PS 2 78 216 discloses liquid cleaning agents which can also contain water-soluble high-molecular substances as dirt carriers. Examples include water-soluble salts of polyacrylic acid and also water-soluble derivatives of cellulose such as carboxymethyl cellulose.

From US-PT 35 91 509 liquid all-purpose cleaners are known which, in addition to water-soluble synthetic surface-active substances, organic solvents and optionally water-soluble builders, contain a small amount of a special water-soluble carboxymethyl cellulose, namely one with a degree of substitution of about 1 to about 2 and a degree of polymerization of contain about 1000 to about 3000 as well as water.

From DE-OS 26 10 995 liquid builder-containing cleaning agents for hard surfaces with small amounts of surfactants in combination with small amounts of a mixture of polyvinyl alcohol and / or polyvinyl pyrrolidone and polysaccharide salt are known, which should also have an improved dirt removal capacity.

Finally, from DE-AS 27 09 690 liquid cleaning agents for hard surfaces are known, which can also contain cleaning-enhancing additives to water-soluble high-molecular substances, such as polyvinyl alcohol, polyvinyl pyrrolidone and carboxymethyl cellulose.

None of the above-mentioned polymeric cleaning enhancers fully meets the demands that the consumer places today on a liquid cleaning agent for hard surfaces. This also explains why these polymers, some of which have been known for a long time, have no significant significance as additives to the household cleaners used in large quantities. Some disadvantages of these known polymers are e.g. insufficient solubility, excessive thickening effect or residue, i.e. Streaking or filming when using the agents if they contain polymers in the amounts necessary for cleaning enhancement.

Surprisingly, it has now been found that a completely unexpected increase in the cleaning performance of liquid cleaning agents for hard surfaces can be achieved if, instead of the known additions of dirt-bearing compounds, significantly smaller amounts of polyethylene glycols with a certain molecular weight are added.

The present invention therefore relates to a liquid cleaning agent for hard surfaces in the form of dilute, preferably aqueous solutions containing anionic, nonionic or cationic surfactants or suitable mixtures thereof, organic and / or inorganic builders, optionally water-soluble solvents or solubilizers and other customary components of such Detergent and organic polymers, which is characterized in that as organic polymers 0.05 to 0.5, preferably 0.08 to 0.4 wt .-% water-soluble polyethylene glycols with a molecular weight between 300,000 and 4,000,000, preferably between 500,000 and 1,000,000. With these amounts of use, which bring about an unexpected cleaning enhancement, none of the above-mentioned disadvantages of the known polymers can be observed.

The polyethylene glycols mentioned are prepared in a known manner by subjecting ethylene glycols to a polycondensation process in a known manner. They can also be considered as condensation polymers of ethylene oxide with ethylene glycol or water. They have the general formula HO {-CH ₂ - CH ₂ -O) _" H, where n can vary between 4800 and 64 600 in the case of the polyethylene glycols used according to the invention.

Such polymers are also commercially available and are sold by Union Carbon Carbide Corporation (UCC) under the name “POL YOX @”.

Practically all conventional surfactants and mixtures of surfactants can be used which contain at least one hydrophobic organic residue and one water-solubilizing anionic, nonionic or cationic residue in the molecule. The hydrophobic radical is usually an aliphatic hydrocarbon radical with 8-26, preferably 10-22 and in particular 12-18 C atoms or an alkyl aromatic radical with 6-18, preferably 8-16 aliphatic C atoms. In the case of the surfactant mixtures, the known incompatibility of most anionic and cationic surfactants would have to be taken into account.

Is preferably used in amounts of 1-30 wt .-% surfactants from the group of synthetic anionic surfactants, soaps and nonionic surfactants and mixtures thereof. Surfactant combinations of anionic surfactants from the group of the sulfonate and sulfate surfactants and the nonionic surfactants of the ethoxylated alkanols, alkenols and alkylphenols type are particularly preferred. A soap can be included as a further component.

Because of the small amount of the polymers used according to the invention, the weight ratio of the total amount of surfactant to the polymer is at least 10: 1, in particular at least 20: 1.

As anionic surfactants e.g. Soaps from natural or synthetic, preferably saturated fatty acids, optionally also from resin or naphthenic acids, can be used. Suitable synthetic anionic surfactants are those of the sulfonate, sulfate and synthetic carboxylate type.

The surfactants of the sulfonate type are alkylbenzenesulfonates (C _9-15 -alkyl), mixtures of alkene and hydroxyalkanesulfonates and disulfonates, such as are obtained, for example, from monoolefins with a terminal or internal double bond by sulfonation with gaseous sulfur trioxide and subsequent alkaline or acid hydrolysis of the sulfonation group , into consideration. Also suitable are alkanesulfonates which can be obtained from alkanes by sulfochlorination or sulfoxidation and subsequent hydrolysis or neutralization or by bisulfite addition to olefins. Other useful surfactants of the sulfonate type are the esters of a-sulfo fatty acids, for example the a-sulfonic acids from hydrogenated methyl or ethyl esters of coconut, palm kernel or tallow fatty acid.

Suitable surfactants of the sulfate type are the sulfuric acid monoesters of primary alcohols (e.g. from coconut fatty alcohols, tallow fatty alcohols or oleyl alcohol) and those secondary alcohols. Sulfated fatty acid alkanolamides, fatty acid monoglycerides or reaction products of 1-4 moles of ethylene oxide with primary or secondary fatty alcohols or alkylphenols are also suitable.

Other suitable anionic surfactants are the fatty acid esters or amides of hydroxy or amino carboxylic acids or sulfonic acids, e.g. the fatty acid sarcosides, glycolates, lactates, taurides or isethionates.

The anionic surfactants can be present in the form of their alkali metal, alkaline earth metal and ammonium salts and as soluble salts of organic bases, such as mono-, di- or triethanolamine. The sodium salts are mostly preferred for reasons of cost.

Addition products of 4-40, preferably 4-20, moles of ethylene oxide or ethylene oxide and propylene oxide with 1 mole of fatty alcohol, alkanediol, alkylphenol, fatty acid, fatty amine, fatty acid amide or alkanesulfonamide can be used as nonionic surfactants. The addition products of 5-16 moles of ethylene oxide or ethylene and propylene oxide with coconut oil or tallow fatty alcohols, with oleyl alcohol or with secondary alcohols with 8-18, preferably 12-18 C atoms, and with mono- or dialkylphenols with 6- 14 carbon atoms in the alkyl radicals. In addition to these water-soluble nonionics, non-fully or not completely water-soluble polyglycol ethers with 1-4 ethylene glycol ether residues in the molecule are also of interest, in particular if they are used together with water-soluble nonionic or anionic surfactants.

Furthermore, the non-ionic surfactants that can be used are the water-soluble adducts of ethylene oxide with polypropylene oxide, alkylene diamine polypropylene glycol and alkyl polypropylene glycols with 1-10 C atoms in the alkyl chain, in which the polypropylene glycol chain functions as a hydrophobic residue, containing polypropylene oxide, alkylene diamine polypropylene glycol and 10-100 propylene glycol ether groups.

Nonionic surfactants of the amine oxide type can also be used. Typical representatives are, for example, the compounds N-dodecyl-N, N-dimethylamine oxide, N-tetradecyl-N, N-dihydroxyethylamine oxide, N-hexadecyl-N, N-bis (2,3-dihydroxypropyl) amine oxide.

The cationic surfactants contain at least one hydrophobic and at least one basic group, which may be in the form of a salt and which makes water soluble. The hydrophobic group is an aliphatic or cycloaliphatic hydrocarbon group with preferably 10-22 carbon atoms or an alkyl or cycloalkylaromatic group with preferably 8-16 aliphatic carbon atoms. As basic groups, primarily basic nitrogen atoms come into question, which can also be present several times in a surfactant molecule; it is preferably quaternary ammonium compounds such as N-dodecyl-N, N, N-trimethylammonium methosulfate, N-hexadecyl or N-octadecyl-N, N, N-trimethylammonium chloride, N, N-dicocosalkyl-N, N-dimethylam - monium chloride, N-dodecyl-N, N-dimethyl-N- benzylammonium bromide, the reaction product of 1 mol of tallow alkylamine with 10 mol of ethylene oxide, N-dodecyl-N, N ', N'-trimethyl-1,3-diaminopropane, N-hexadecylpyridinium chloride.

The nitrogen compounds mentioned can be replaced by corresponding compounds with a quaternary phosphorus atom or with a tertiary sulfur atom.

For the liquid cleaning agents according to the invention, inorganic or organic compounds, in particular inorganic or organic complexing agents, are used as framework substances in their entirety, which are preferably present in the form of their alkali or amine salts, in particular the potassium salts. The framework substances here also include the alkali metal hydroxides, of which the potassium hydroxide is preferably used.

The alkaline polyphosphates, in particular the tripolyphosphates and the pyrophosphates, are particularly suitable as inorganic complex-forming framework substances. They can be replaced in whole or in part by organic complexing agents. Further inorganic builders that can be used according to the invention are, for example, dicarbonates, carbonates, borates, silicates or orthophosphates of the alkalis.

The organic complexing agents of the aminopolycarboxylic acid type include, among others, nitrilotriacetic acid, ethylenediaminetetraacetic acid, N-hydroxyethylethylene diamine triacetic acid and polyalkylene polyamine N-polycarboxylic acids. Examples of di- and polyphosphonic acids are: methylene diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid, propane-1,2,3-triphosphonic acid, butane-1,2,3,4-tetraphonic acid, polyvinylphosphonic acid, copolymers of vinylphosphonic acid and Acrylic acid, ethane-1,2, dicarboxy-1,2-diphosphonic acid, ethane-1,2-dicarboxy-1,2-dihydroxy-diphosphonic acid, phosphonosuccinic acid, 1-aminoethane-1,1-diphosphonic acid, aminotri- (methylenephosphonic acid), methylamino- or ethylamino-di- (methylenephosphonic acid) and ethylenediamine-tetra- (methylenephosphonic acid).

A wide variety of, mostly N- or P-free polycarboxylic acids have recently been proposed as builders in the literature, many, if not exclusively, of polymers containing carboxyl groups. A large number of these polycarboxylic acids have a complexing ability for calcium. These include e.g. Citric acid, tartaric acid, benzene hexacarboxylic acid, tetrahydrofuran tetracarboxylic acid etc.

Since household cleaning agents are generally almost neutral to slightly alkaline, i.e. their aqueous working solutions at application concentrations of 2-20, preferably 5-15 g / l water or aqueous solution have a pH in the range of 7.0-10.5, preferably 7.5-9.5, can be used for Regulation of the pH value requires the addition of acidic or alkaline components.

Suitable acidic substances are conventional inorganic or organic acids or acidic salts, such as, for example, hydrochloric acid, sulfuric acid, bisulfates or alkalis, aminosulfonic acid, phosphoric acid or other acids of phosphorus, in particular the anhydrous acids of phosphorus or their acidic salts or their acid-reacting solid compounds with urea or other lower carboxylic acid amides, partial amides of phosphoric acids or anhydrous phosphoric acid, citric acid, tartaric acid, lactic acid and the like.

If the content of alkaline builders is not sufficient to regulate the pH value, it is also possible to add alkaline organic or inorganic compounds such as alkanolamines, namely mono-, di- or triethanolamine or ammonia.

In addition, known solubilizers can be incorporated, which in addition to the water-soluble organic solvents such as, in particular, low-molecular aliphatic alcohols with 1-4 carbon atoms, also include the so-called hydrotropic substances of the lower alkylarylsulfonate type, for example toluene, xylene or cumene sulfonate. They can also be in the form of their sodium and / or potassium and / or alkylamino salts. Water-soluble organic solvents can also be used as solubilizers, in particular those with boiling points above 75 ° C., for example the ethers from the same or different polyhydric alcohols or the partial ethers from polyhydric alcohols. These include, for example, di- or triethylene glycol polyglycerols and the partial ethers of ethylene glycol, propylene glycol, butylene glycol or glycerol with aliphatic monohydric alcohols containing 1-4 carbon atoms in the molecule.

Suitable water-soluble or water-emulsifiable organic solvents are also ketones, such as acetone, methyl ethyl ketone and aliphatic, cycloaliphatic, aromatic and chlorinated hydrocarbons, and also the terpene alcohols.

To regulate the viscosity, it may be advisable to add higher polyglycotethers with molecular weights of up to about 600 or polyglycerol. It is also recommended to add sodium chloride and / or urea to regulate the viscosity.

In addition, the claimed agents can contain additives of colorants and fragrances, preservatives and, if desired, antimicrobial agents of any kind.

Suitable antimicrobial agents to be used are those compounds which are stable and effective in the liquid agents according to the invention. These are phenolic compounds of the halogenated phenol type with 1-5 halogen substituents, in particular chlorinated phenols; Alkyl, cycloalkyl, aralkyl and phenylphenols with 1-12 carbon atoms in the alkyl radicals and with 1-4 halogen substituents, in particular chlorine and bromine in the molecule; Alkylene bisphenols, in particular derivatives substituted by 2-6 halogen atoms and optionally lower alkyl or trifluoromethyl groups, with an alkylene bridge member having 1-10 carbon atoms; Hydroxybenzoic acids or their esters and amides, in particular anilides, which can be substituted in the benzoic acid and / or aniline residue, in particular also 2 or 3 halogen atoms and / or trifluoromethyl groups; Orthophenoxyphenols, which can be substituted by 1-7, preferably 2-5 halogen atoms and / or the hydroxyl, cyano, methoxycarbonyl and carboxyl group or lower alkyl. Particularly preferred antimicrobial agents of the phenyl type are, for example, O-phenylphenol, 2-phenylphenol, 2-hydroxy-2 ', 4,4'-trichlorodiphenyl ether, 2,4', 5-tribromosalicylanilide and 3,3 ', 5,5', 6 , 6'-Hexachloro-2,2'-dihydroxy-diphenylmethane.

Other useful antimicrobial agents are the lower alcohols or diols with 3-5 carbon atoms substituted by both bromine and by the nitro group, e.g. the compounds 2-bromo-2-nitropropanediol-1,3, 1-bromo-1-nitro-3,3,3-trichloropropanol, 2,2-bromo-2-nitro-butanol-1.

Bis-diguanides such as e.g. the 1,6-bis (p-chlorophenyldiguanido) hexane in the form of the hydrochloride, acetate or cluconate as well as N, N'-disubstituted 2-thione-tetrahydro-1,3,5-thiadiazines such as e.g. 3,5-dimethyl-, 3,5-diallyl-, 3-benzyl-5-methyl- and especially 3-benzyl-5-carboxymethyl-tetrahydro-1,3,5-thiadiazine as additional antimicrobial agents.

Formaldehyde-amino alcohol condensation products can preferably be used. The products are obtained by reacting an aqueous solution of fromaldehyde with amino alcohols, e.g. 2-aminoethanol, 1-amino-2-propanol, 2-aminoiso-butanol, 2 (2'-aminoethyl) aminoethanol.

In addition, it may be advantageous for other areas of application to additionally add further antimicrobial substances, for example of the quaternary ammonium compound type, for example a benzylalkyldimethylammonium chloride.

tries

To demonstrate the advantages of the cleaning agents according to the invention over the known cleaning agents for hard surfaces, comparisons were made with regard to their cleaning ability and their residue formation.

The test method described below was used to test the cleaning ability and provides very reproducible results. Furthermore, the cleaning agents according to the invention and a comparison product each were handed over to housewives for several weeks for use testing. After the test period, these test persons were asked about their experiences with regard to cleaning effect and residue behavior.

In addition, the residue behavior was checked in laboratory tests on mirrors, black tiles and plastic surfaces. Here, adjacent areas were treated with the dilute solutions of the agents according to the invention and with a comparative product. The test areas were allowed to air dry without wiping and the appearance of the dry areas was assessed by several test persons.

Testing the cleaning effect The cleaning agent to be tested is placed on an artificially soiled plastic surface. A mixture of carbon black, machine oil, triglyceride, saturated fatty acids and low-boiling aliphatic hydrocarbon is used as artificial soiling. The test area of 26x28 cm is evenly coated with 2 g of artificial soiling with the help of a surface coater.

A plastic sponge is soaked with 12 ml of the detergent solution to be tested and moved mechanically on the test surface. After 6 wiping movements, the cleaned test area is kept under running water and the loose dirt is removed. The cleaning effect, i.e. the degree of whiteness of the plastic surface cleaned in this way, is measured with a photoelectric color measuring device LF 90 (Dr. B. Lange). The clean white plastic surface serves as the white standard.

Since the measurement of the clean surface is set to 100% and the soiled area is displayed with 0, the read values for the cleaned plastic areas are to be equated with the percentage cleaning capacity (% RV). In the following tests, the% -RV values given are the values for the cleaning power of the investigated cleaning agents determined using this method. They represent mean values from fourfold determinations.

Examples example 1

6% by weight of C ₁₀₁₁₃ alkylbenzenesulfonate, Na salt

2% by weight adduct of 10 moles of ethylene oxide with 1 mole of a mixture of oleyl and cetyl alcohol

2% by weight Na soap from oleic acid

5% by weight Na tripolyphosphate

0.3% by weight of polyethylene glycol with a molecular weight of about 600,000 (commercial product POLYOX

WSR 205® from UCC)

0.1% by weight fragrance remainder water.

The all-purpose cleaner shows an RV of 85% when used as a 1% aqueous solution. The comparative product without POLYOX an RV of 64%. If 0.3% by weight of polyvinyl alcohol was added to the comparison product, only a value of 63% RV was likewise obtained. If its proportion was increased to 0.5% by weight, there was still no increase in cleaning performance. In addition, the product became so highly viscous that a further increase in the proportion of polyvinyl alcohol no longer made sense for this reason alone.

When testing the residue behavior, a black tile wall was wiped half with the 1% solution of the cleaning agent according to Example 1 and the other half with that of the comparison sample with 0.3% by weight polyvinyl alcohol. After drying in air, the surface treated with the agent according to the invention showed no visible residue, while the comparison surface had clear plaster strips.

Example 2

4.8% by weight of C _10/13 alkylbenzenesulfonate, Na salt

1.2% by weight adduct of 10 moles of ethylene oxide with 1 mole of nonylphenol

2.0% by weight diethanolamine

6.0% by weight of butyl glycol

6.0% by weight of ethylenediaminetetraacetate

0.2% by weight of polyethylene glycol with a molecular weight of about 600,000 (commercial product POLYOX WSR 205® from UCC)

0.1% by weight fragrance

0.001 wt% dye

Rest of water.

RV of the undiluted product: 98%

RV of the undiluted comparative product without polymer: 75%.

Example 3

3.0% by weight adduct of ethylene oxide and propylene oxide with an oxo alcohol (commercial product Lutensol LT30®, from BASF)

1.0% by weight ammonium soap from palm kernel fatty acids 5.0% by weight ethylenediaminetetraacetic acid

0.1% by weight of polyethylene glycol with a molecular weight of about 600,000 (commercial product POLYOX WSR 205 ¹¹ from UCC)

0.002% by weight of dyes

0.2% by weight of perfume oils

Rest of water.

RV of the 1% solution: 52%

RV of the 1% solution of the polymer-free comparison product: 41%.

No visible residue was visible after use on mirrors, black tiles and plastic surfaces.

Example 4

7.0% by weight of C _10/13 alkylbenzenesulfonate, Na salt

1.0% by weight adduct of 10 moles of ethylene oxide with 1 mole of C _9/11 oxo alcohol

4.0% by weight Na tripolyphosphate

5.0% by weight formaldehyde condensation product as an antimicrobial

0.2% by weight of polyethylene glycol with a molecular weight of about 600,000 (commercial product POLYOX WSR 205 ⁹ from UCC)

1.0% by weight Na cumene sulfonate

0.1% by weight of perfume oil

Rest of water.

RV of the 1% solution: 84%

RV of the 1% solution of the comparison sample without POLYOX: 60%.

The residue behavior was perfect as in the previous examples.

Example 5

20.0% by weight aldehyde mixture of 5% formalin solution (40%) and 15% glyoxal solution (40%)

10.0% by weight adduct of nonylphenol + 10 EO

10.0 wt% glycerin

4.0% by weight of benzyl-dimethyl-alkyl-ammonium chloride

0.2% by weight of polyethylene glycol with a molecular weight of 4000000 (commercial product POLYOX WSR 301® from UCC)

0.2% by weight of perfume oil

0.001 wt% dye

Rest of water

RV of the 2% solution: 64%

RV of the 2% solution of the comparative product without polymer: 42%.

Attempting to incorporate other known polymers, e.g. The incorporation of polyvinyl alcohol, polyacrylates or copolymers of acrylic and methacrylic acid failed due to their lack of solubility in this agent.

Example 6

• ¹ ) Adduct of ethylene and propylene oxide with an oxo alcohol (commercial product Lutensol LT 300 from BASF
• ² ) Sodium salt of the sulfated adduct of 2 moles of ethylene oxide and 1 mole of a C ₁₂ -C ₁₈ fatty alcohol mixture
• ³ ) polyethylene glycol with a molecular weight of about 600,000 (commercial product from UCC)
• 4) acrylic-methacrylic acid copolymer (commercial product from Röhm GmbH)
• ⁵ ) Weakly crosslinked polyacrylic acid polymer (commercial product from Goodrich Chemical Company).

It was not possible to increase the polymers known as cleaning enhancers in comparison samples 4) and 5), since the amounts used here were no longer clearly soluble.

Claims (10)

1. A liquid cleaning agent for hard surfaces based on aqueous solutions of surfactants, builders and organic polymers, characterised in that it contains as organic polymers from 0.05 to 0.5% by weight and preferably from 0.08 to 0.4% by weight of water-soluble polyethylene glycols having a molecular weight of from 300,000 to 4,000,000 and preferably from 500,000 to 1,000,000.

2. An agent as claimed in Claim 1, characterised in that it contains synthetic anionic surfactants, soaps or non-ionic surfactants or mixtures thereof in quantities of from 1 to 30% by weight, based on the formulation as a whole.

3. An agent as claimed in Claims 1 and 2, characterised in that it contains a surfactant combination of anionic surfactants from the group comprising sulfonate and sulfate surfactants and non-ionic surfactants of the ethoxylated alkohol, alkenol and alkyl phenol type, optionally together with a soap.

4. An agent as claimed in Claims 1 to 3, characterised in that it also contains solution promoters, preferably toluene, xylene or cumene sulfonate.

5. An agent as claimed in Claims 1 to 4, characterised in that it contains ethers of identical or different polyhydric alcohols containing from 1 to 4 carbon atoms as solution promoters.

6. An agent as claimed in Claims 1 to 5, characterised in that it also contains antimicrobially active substances.

7. An agent as claimed in Claims 1 to 6, characterised in that it contains aldehyde condensation products as the antimicrobially active substances.

8. An agent as claimed in Claims 1 to 7, characterised in that it contains quaternary ammonium compounds as the anti-microbially active substances.

9. An agent as claimed in Claims 1 to 8, characterised in that it additionally contains nitrogen compounds, such as ammonium hydroxide or mono-, di- or tri-alkanolamine, as pH-regulators.

10. An agent as claimed in Claims 1 to 9, characterised in that it additionally contains colorants, fragrances and preservatives.