EP1924678A1

EP1924678A1 - Cleanser for hard surfaces

Info

Publication number: EP1924678A1
Application number: EP06791837A
Authority: EP
Inventors: Erik BRÜCKNER; Stefan Karsten; Jürgen Noglich
Original assignee: Henkel AG and Co KGaA
Current assignee: Henkel AG and Co KGaA
Priority date: 2005-09-16
Filing date: 2006-09-05
Publication date: 2008-05-28
Also published as: JP2009507970A; DE102005044513A1; US20090264330A1; WO2007033761A1

Abstract

Disclosed is an aqueous cleanser for hard surfaces, which is applied to the surface that is to be cleaned by means of a spray dispenser in the form of a foam. Said cleanser contains a fatty alcohol sulfate and/or a fatty acid sarcosinate as well as isopropanol and butyl glycol. The inventive cleanser can be used in a process for the streak-free cleaning of hard surfaces, particularly glass. The decomposition of the cleansing foam can be heard in the form of a crackling noise during proper use to clean hard surfaces.

Description

"Cleaning Agents for Hard Surfaces"

The subject of the application is a cleaning agent for hard surfaces, in particular glass, which is applied by means of a spray dispenser in the form of a foam on the surface to be cleaned and fatty alcohol sulfate and / or fatty acid sarcosinate and isopropanol and butyl glycol. The foam produced during spraying sticks well even on vertical surfaces, but decays quickly when wiping with a quiet crackling and leaves almost no residue on the cleaned surface; In particular, no streaking or streaking is observed.

When cleaning hard surfaces, it is always desirable that the cleaning agent is in turn completely removed after successful removal of the soiling and dries residue-free if possible. In particular, on glass surfaces otherwise remain unsightly streaks and streaks, which can only be removed by increased workload. Furthermore, it is desirable, especially for vertical surfaces, such as windows or mirrors, that the cleaning agent does not run off immediately after application, but adheres to the contaminants for a certain time to allow a better release of the dirt. This can be effected, for example, by applying the detergent in the form of a foam. However, this foam should quickly disintegrate during subsequent wiping with a cloth, sponge, leather or other suitable substrate to ensure the desired residue-free cleaning.

The object of the present invention was therefore to provide an aqueous cleaner for hard surfaces with good cleaning performance, which on the one hand forms a stable and well-adhering foam, on the other hand, quickly decays during wiping and leaves as few residues when removing.

It has now been found that an aqueous cleaner for hard surfaces, in particular glass, which is applied by means of a spray dispenser in the form of a foam on the surface to be cleaned and fatty alcohol sulfate and / or fatty acid sarcosinate and isopropanol and butyl glycol, has a particularly good cleaning performance. On the one hand, the resulting foam adheres particularly well to the surface to be cleaned, so that the dirt wets and dissolves for a longer time, on the other hand, the foam decomposes but quickly when wiping and can be removed almost residue and streaks. At the same time, a crackling sound is heard when the foam breaks down greater degree of contamination is increased, so that the user can simultaneously experience the effect of the agent sensually.

The subject of this invention is therefore an aqueous hard surface cleaner which is applied by means of a spray dispenser in the form of a foam on the surface to be cleaned and containing a fatty alcohol sulfate and / or fatty acid sarcosinate and isopropanol and butyl glycol.

The foam stability or the flow rate of the foam on vertical surfaces can surprisingly be further improved by the addition of a colloidal silica sol customary as a hydrophilizing agent, so that a preferred embodiment also contains this ingredient.

In the context of the present invention are fatty acids or fatty alcohols or their derivatives - unless otherwise stated - representative of branched or unbranched carboxylic acids or alcohols or their derivatives having preferably 6 to 22 carbon atoms. The former are particularly preferred for their vegetable base as based on renewable raw materials for environmental reasons, but without limiting the teaching of the invention to them. In particular, the oxo alcohols or their derivatives, which are obtainable, for example, by ROEiEN's oxo synthesis, can also be used correspondingly.

Whenever in the following alkaline earth metals are mentioned as counterions for monovalent anions, this means that the alkaline earth metal, of course, only in the half - sufficient for charge balance - amount of substance as the anion is present.

Substances which also serve as ingredients of cosmetic products are hereinafter referred to as appropriate according to the International Nomenclature Cosmetic Ingredient (INCI) nomenclature. Chemical compounds carry an INCI name in English, plant ingredients are listed only after Linne in Latin. So-called trivial names such as "water", "honey" or "sea salt" are also given in Latin. The INCI names can be found in the "International Cosmetic Ingredient Dictionary and Handbook, Seventh Edition (1997)", The Cosmetic, Toiletry and Fragrance Association (CTFA), 1101, 17 * Street NW, Suite 300, Washington, DC 20036 , USA, and contains more than 9,000 INCI names, as well as references to more than 37,000 trade names and technical names, including distributors from over 31 countries. The International Cosmetic Ingredient Dictionary and Handbook assigns one or more chemical classes to the ingredients, for example "Polymeric Ethers", and one or more several functions, for example, "Surfactants - Cleaving Agents", which explains it in turn. These may also be referred to below.

The indication CAS means that the following sequence of numbers is a name of the Chemical Abstracts Service.

Unless otherwise stated, amounts given are percentages by weight (% by weight) of the total composition. These percentages refer to active contents.

Fatty alcohol sulphates

As alkyl sulfates (fatty alcohol sulfates, FAS), the alkali metal and in particular the sodium salts of sulfuric acid half esters of for example, from coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl or stearyl alcohol or the Cio ₂₀ -Oxoalkohole and those half-esters of secondary alcohols of these chain lengths are preferred. Also preferred are alkyl sulfates of said chain length, which contain a synthetic geradkettigeπ alkyl radical produced on a petrochemical basis, which have an analogous degradation behavior as the adequate compounds based on oleochemical raw materials. Particularly preferred are the C ₁₀ -C ₆ -alkyl sulfates, in particular the Ci ₂ -i ₄ -alkyl sulphates. Furthermore, it is also possible to use alkyl sulfates having mono- or polysubstituted alkyl chains or cyclic alkyl radicals.

The fatty alcohol sulfates are usually as alkali metal, alkaline earth metal and / or mono-, di- or Trialkanolammoniumsalz and / or but also in the form of their with the corresponding alkali metal hydroxide, alkaline earth metal hydroxide and / or mono-, di- or trialkanolamine to be neutralized in situ corresponding acid used. Preference is given here as alkali metals potassium and sodium in particular, as alkaline earth metals calcium and magnesium in particular, and as alkanolamines mono-, di- or triethanolamine.

Fatty alcohol sulfates are preferably used are primarily the sodium or the mono- ethanolamine lauryl sulfate, for example the corresponding Texapon ^® grades, which are offered by the company Cognis. Particular preference is given to monoethanolamine-lauryl sulfate. Another preferred raw material is the mixture of sodium lauryl sulfate and 1-octyl-2-pyrrolidone, available under the trade name EasyWet ™ 20 from ISP. According to the invention, fatty alcohol sulfates are used in amounts of 0.01 to 1% by weight, preferably 0.02 to 0.5% by weight. fatty acid sarcosinates

Alternatively or in addition to the fatty alcohol sulfate, the agent may also contain one or more fatty acid sarcosinates (Alkylmethylglyαnate) These are the salts of the condensation products of fatty acids with N-Methylglycιn (sarcosine) of the general formula R-CO-N (CH ₃ ) -CH ₂ -COOH in which R is a straight-chain C ₇ -C ₂ -alkyl radical These are also usually used as the alkali metal, alkaline earth metal and / or mono-, di- or Tπalkanolammoniumsalz and / or in the form of their with the corresponding alkali - Metal hydroxide, alkaline earth metal hydroxide and / or mono-, di- or Tnalkanolamin used in situ to neutrahsieenden corresponding acid, particularly preferred are the sodium salts Particularly preferred fatty acid sarcosinates are sodium C ₁₂ -C ₁₈ sarcosinate (INCI Sodium Cocoyl Sarcosinate), which, for example the trade name PERLASTAN ^® C-30 can be purchased from the company Schill & Seilacher, and Natπumlaury- oylsarcosinat in the For example, under the trade name Medialan ^® LD30 of Claπant is commercially available

According to the invention, fatty acid sarcosinates are used in amounts of from 0.01 to 0.5% by weight

solvent

The agent according to the invention contains the solvents isopropanol (INCI isopropyl alcohol) and butyl glycol (INCI butoxy ethanol ethylene glycol butyl ether). In addition, one or more further water-soluble organic solvents may be present, of which the diethylene glycol is particularly preferred

Suitable solvents are, for example, saturated or unsaturated, preferably saturated, branched or unbranched C ₂₀ hydrocarbons, preferably C ₂ -15 hydrocarbons, having at least one hydroxyl group and optionally one or more ether functions COC, ie the carbon atom chain interrupting oxygen atoms. Preferred solvents are - if appropriate on one side with a Ci _-6 th alkanol verether- - C _{2 6} alkylene glycols and poly-C _{2 3} -alkylene same with an average of 1 to 9 or different, preferably identical, alkylene glycol per molecule as well as the C _1-6 - Alcohols, preferably ethanol, n-propanol or n-butanol, especially ethanol Exemplary solvents are the following according to INCI compounds Alcohol (ethanol), buteth-3, butoxy diglycol, butoxyisopropanol, butoxypropanol, n-butyl alcohol, t-butyl alcohol, butylenes Glycol, butyloctanol, diethylene glycol, dimethoxy diglycol, dimeth ethers, dipropylenes glycol, ethoxydiglycol, ethoxyethanol, ethyl hexanediol, glycol, hexanediol, 1, 2,6-hexanetriol, hexyl alcohol, hexylenes glycol, isobutoxypropanol, isopentyldiol, 3-methoxybutanol, methoxydiglycol, methoxyethanol, methoxyisopropanol, methoxymethylbuta- nol, methoxy PEG-10, methylal, methyl alcohol, methyl hexyl ether, methyl propanediol, neopentyl glycol, PEG-4, PEG-6, PEG-7, PEG-8, PEG-9, PEG-6 methyl ether, pentylenes Glycol, PPG-7, PPG-2-buteth-3, PPG-2 butyl ether, PPG-3 butyl ether, PPG-2 methyl ether, PPG-3 methyl ether, PPG-2 propyl ether, propanediol, propyl alcohol (n Propanol), propylene glycol, propylene glycol butyl ether, propylene glycol propyl ether, tetrahydrofurfuryl alcohol, trimethylhexanol.

Particularly preferred solvents are the etherified on one side with a C _1-6 alkanol poly-C ₂ - ₃ -alkylene with an average of 1 to 9, preferably from 2 to 3, ethylene or propylene glycol groups, such as PPG-2 Methyl Ether (Dipropylenglykolmonomethyl- ether) ,

The agent according to the invention preferably contains isopropanol in amounts of 0.01 to 5% by weight, preferably 0.1 to 3% by weight, and butyl glycol is preferred in amounts of 0.1 to 6% by weight, preferably 1 to 5 wt .-%.

In a preferred embodiment, further 0.01 to 0.5 wt .-%, preferably 0.025 to 0.1 wt .-% diethylene glycol. Further particularly preferred organic solvents are preferably selected from the group comprising C _1-6 -alcohols, C _2-6 -diols and mixtures thereof, in particular selected from the group comprising ethanol, n-butanol, ethylene glycol, diethylene glycol, propylene glycol and mixtures the same.

In addition to the previously mentioned, the agent according to the invention may contain further ingredients. These include, in particular, agents for modifying or hydrophilizing surfaces, pH adjusters, surfactants, preservatives, corrosion inhibitors, dyes, fragrances, bleaches, enzymes, thickeners, disinfectants, electrolyte salts, UV stabilizers and mixtures thereof.

Agent for the hydrophilization of surfaces

In particular, colloidal silica sols in which the silicon dioxide is present in nanoparticulate form are suitable for hydrophilization. For the purposes of this invention, colloidal nanoparticulate silica sols are stable dispersions of amorphous particulate silicon dioxide SiO ₂ having particle sizes in the range from 1 to 100 nm. The particle sizes are preferably in the range from 3 to 50 nm, more preferably from 4 to 40 nm a silica sol which is suitable for use in accordance with this invention is the silica sol having a particle size of 9 nm available under the trade name BindziF 30/360 from Akzo. Further suitable silica sols are Bindzif 15 / 500, 30/220, 40/200 {Akzo), Nyacof 215, 830, 1430, 2034DI, and Nyacof * DP5820, DP5480, DP5540, etc. (Nyacol Products), Levasf 100/30, 100F / 30, 100S / 30, 200 / 30, 200F / 30, 300F / 30, VP 4038, VP 4055 (HC Starck / Bayer) or CAB-O-SPERSέ ^® PG 001, PG 002 (aqueous dispersion of CAB-O-SIL ^®, Cabot), Quartron PL-1, PL-3 {FusoChemical Co.), Köstrosol 0830, 1030, 1430 (Chemiewerk Bad Köstritz). The silica sols used may also be surface modified silica treated with sodium aluminate (alumina-modified silica).

In addition, it is also possible to use certain polymers for the hydrophilization of surfaces. Particularly suitable hydrophilizing polymers are amphoteric polymers, for example copolymers of acrylic or methacrylic acid and MAPTAC, DADMAC or another polymerisable quaternary ammonium compound. Furthermore, it is also possible to use copolymers with AMPS (2-acrylamido-2-methylpropanesulfonic acid). Polyether siloxanes, ie copolymers of polymethylsiloxanes with ethylene oxide or propylene oxide segments, are further suitable polymers. Also usable are acrylic polymers, maleic acid copolymers and polyurethanes with PEG (polyethylene glycol) units. Suitable polymers are, for example, under the trade names Mirapol Surf-S 100, 110, 200, 210, 400, 410, A 300, A 400 (Rhodia), Tegopren 5843 (Goldschmidt), Sokalan CP 9 (BASF) or Polyquart Ampho 149 (Cognis ) commercially available.

However, it is particularly preferable to use the colloidal silica sol available under the trade name Bindzil® 30/360, preferably in amounts of from 0.01 to 0.6% by weight.

Volatile alkali; bases

Furthermore, the agents according to the invention may contain volatile alkali. As such, ammonia and / or alkanolamines, which may contain up to 9 C atoms in the molecule, are used. As alkanolamines, the ethanolamines are preferred and of these in turn the monoethanolamine. The content of ammonia and / or alkanolamine is preferably 0.01 to 0.5 wt .-%; ammonia is particularly preferably used. In addition, the detergents according to the invention, especially formulations having an acidic pH, may also contain small amounts of bases. Preferred bases are selected from the group of alkali and alkaline earth metal hydroxides and carbonates, in particular the alkali metal hydroxides, of which potassium hydroxide and especially sodium hydroxide is particularly preferred. In the acidic agents, bases are used in amounts of not more than 1% by weight, preferably 0.01 to 0.1% by weight.

acids

Alkaline agents may additionally contain carboxylic acid in addition to the volatile alkali, wherein the equivalent ratio of amine and / or ammonia to carboxylic acid is preferably between 1: 0.9 and 1: 0.1. Suitable carboxylic acids having up to 6 carbon atoms, which may be mono-, di- or polycarboxylic acids. Depending on the equivalent weight of amine and carboxylic acid, the content of carboxylic acid is preferably between 0.01 and 2.7% by weight, in particular between 0.01 and 0.9% by weight. Examples of suitable carboxylic acids are acetic acid, glycolic acid, lactic acid, citric acid, succinic acid, adipic acid, malic acid, tartaric acid and gluconic acid, of which preferably acetic acid, citric acid and lactic acid are used. Particular preference is given to using acetic acid. Acid detergents according to the invention may also contain acids instead of volatile alkali. Suitable acids are, in particular, organic acids such as the abovementioned carboxylic acids acetic acid, citric acid, glycolic acid, lactic acid, succinic acid, adipic acid, malic acid, tartaric acid and gluconic acid or amidosulfonic acid. In addition, however, it is also possible to use the mineral acids hydrochloric acid, sulfuric acid and nitric acid or mixtures thereof. Particular preference is given to acids selected from the group comprising amidosulfonic acid, citric acid and formic acid. They are preferably used in amounts of from 0.1 to 5% by weight, more preferably from 0.5 to 4% by weight, in particular from 1 to 3% by weight.

Other surfactants

The composition according to the invention may contain, in addition to the abovementioned fatty alcohol sulfates, also other surface-active substances (surfactants), in particular from the classes of anionic and nonionic surfactants.

Suitable anionic surfactants are preferably C ₈ -C ₁₈ -alkylbenzenesulfonates, in particular having about 12 C atoms in the alkyl moiety, C ₈ -C ₂ 0-alkanesulfonates, C 1 -C 4 -alkyl polyglycol ether sulfates (fatty alcohol ether sulfates) with 2 to 10 ethylene oxide (EO) - and / or propylene oxide (PO) units in the ether part and sulfosuccinic mono- and di-C ₈ -C ₁₈ alkyl esters. Furthermore, C ₈ -C ₈ -α-olefinsulfonates, sulfonated C ₈ -C ₁₈ -fatty acids, in particular dodecylbenzenesulfonate, C ₈ -C ₂₂ -carboxylic acid amide ether sulfates, Cβ-ds-alkylpolyglycol ether carboxylates, C ₈ -C ₁₈ -N-acyltaurides and C ₈ -C ₁₈ -alkyl isethionates or mixtures thereof are used. The anionic surfactants are preferably used as sodium salts, but may also be present as other alkali metal or alkaline earth metal salts, for example magnesium salts, and in the form of ammonium or mono-, di-, tri- or tetraalkylammonium salts, in the case of the sulfonates also in the form their corresponding acid, eg dodecylbenzenesulfonic acid.

Examples of such surfactants are sodium lauryl ether sulfate with 2 EO, sodium sec-alkanesulfonate with about 15 C atoms or sodium dioctylsulfosuccinate.

As nonionic surfactants are especially ie ethoxylated and / or propoxylated alcohols having 8 to 18 C atoms in the alkyl moiety and 2 to 15 ethylene oxide (EO) and / or Propylenoxidiπheiteπ (PO), Cβ-C ^ carboxylic acid polyglycol ester with 2 to 15 EO _1, for example tallow fatty acid + 6-EO ester, ethoxylated fatty acid amides having 12 to 18 carbon atoms in the fatty acid moiety and 2 to 8 EO, long-chain Amine oxides having 14 to 20 carbon atoms and long-chain alkyl polyglycosides having 8 to 14 carbon atoms in the alkyl moiety and 1 to 3 glycoside units. Examples of such surfactants are oleyl-cetyl-alcohol with 5 EO, nonylphenol with 10 EO, lauric acid diethanolamide, cocoalkyldimethylamine oxide and cocoalkyl polyglucoside with on average 1.4 glucose units. Can furthermore also endgruppenverschlos- seπe C _B -C ₈ alkyl alcohol polyglycol ethers are used, ie compounds in which typically the free OH group of the Cβ-Ci alkyl alcohol polyglycol ethers _B is etherified. Further nonionic surfactants may contain nitrogen-containing surfactants, for example fatty acid polyhydroxyamides, for example glucamides, and ethoxylates of alkylamines, vicinal diols and / or carboxylic acid amides which have alkyl groups with 10 to 22 C atoms, preferably 12 to 18 C atoms. The degree of ethoxylation of these compounds is generally between 1 and 20, preferably between 3 and 10. Preferred are ethanol amide derivatives of alkanoic acids having 8 to 22 carbon atoms, preferably 12 to 16 carbon atoms. In a preferred embodiment, however, the agent according to the invention is free of alkoxylated nonionic surfactants.

In addition to the previously mentioned types of surfactant, the agent according to the invention may also contain cationic surfactants and / or amphoteric surfactants.

Suitable amphoteric surfactants are, for example, betaines of the formula (R "')(R' ^V) (R ^V) N ⁺ CH ₂ ^COO" in which R "'is an optionally interrupted by hetero atoms or hetero atom groups alkyl radical having 8 to 25, preferably 10 to 21 carbon atoms and R ^'v and R ^v are identical or different alkyl radicals having 1 to 3 carbon atoms, in particular C ₁₀ -C ₁₈ -, alkyl-dimethylcarboxymethylbetain and Cn-Ciy-Alkylamidopropyl-dimethylcarboxymethylbetain The compositions contain amphoteric surfactants in amounts, based on the composition, from 0 to 10% by weight.

Suitable cationic surfactants include the quaternary Ammoniumverbindungeπ the formula (R ^vi ) (R ^vii ) (R ^viii ) (R ^ix ) N ⁺ X ^" , in the R ^vi to R ^ix for four identical or different, in particular two long and two short-chain, alkyl radicals and X ^'are an anion, in particular a halide dione, for example didecyl-dimethyl-ammonium chloride, alkylbenzyl-didecyl-ammonium chloride and mixtures thereof The compositions contain cationic surfactants in amounts, based on the composition , from 0 to 10% by weight.

In a particularly preferred embodiment, however, the agent contains, in addition to C ₈ -C 6 -alkyl sulfates and / or fatty acid sarcosinates, no further surfactant components. viscosity

The agent preferably has a viscosity according to Brookfield (Model DV-II +, spindle 31, rotation frequency 20 min ^"1, 20 ⁰ C) of 0.1 to 20O mPa-S, in particular 0.5 to 10O mPa-S, most preferably 1 For this purpose, the agent may contain viscosity regulators The amount of viscosity regulator is usually up to 0.5 wt .-%, preferably 0.001 to 0.3 wt .-%, in particular 0.01 to 0 , 2 wt .-%, most preferably 0.01 to 0.15 wt .-%.

Viscosity regulators

Suitable viscosity regulators are, for example, organic natural thickeners (agar-agar, carrageenan, tragacanth, gum arabic, alginates, pectins, polyoses, guar flour, locust bean gum, starch, dextrins, gelatin, casein), organic modified natural substances (carboxymethylcellulose and other cellulose ethers, hydroxyethyl - and -propyl-cellulose and the like, core flour ethers), organic fully synthetic thickeners (polyacrylic and polymethacrylic compounds, vinyl polymers, polycarboxylic acids, polyethers, polyimines, polyamides) and inorganic thickeners (polysilicic acids, clay minerals such as montmorillonites, zeolites, silicas).

The polyacrylic and polymethacrylic compounds include, for example, the high molecular weight homopolymers of acrylic acid crosslinked with a polyalkenyl polyether, in particular an allyl ether of sucrose, pentaerythritol or propylene (/ Λ / C / according to International Dictionary of Cosmetic Ingredients of The Cosmetic, Toiletry and Fragrance Association (CTFA): Carbomer), also referred to as carboxyvinyl polymers. Such polyacrylic acids are available, inter alia, from the company 3V Sigma under the trade name PolygeP, for example PolygeP DA, and from the company BFGoodήch under the trade name CarbopoP, eg CarbopoP 940 (molecular weight about 4,000,000), CarbopoP 941 (molecular weight about 1,250 .000) or CarbopoP 934 (molecular weight about 3,000,000). Furthermore, the following acrylic acid copolymers are included: (i) Copolymers of two or more monomers from the group of acrylic acid, methacrylic acid and their simple, preferably with C ^ alkanols formed esters (INCI acrylates copolymer), such as the copolymers of methacrylic acid acrylate, butyl acrylate and methyl methacrylate (CΛS name according to Chemical Abstracts service: 25035-69-2) belong or of butyl acrylate and methyl (CAS 25852-37-3), and, for example, by the company Rohm & Haas under the trade names Aculyn ^® and AcusoP. as well as from the company Degussa (Goldschmidt) under the trade name Tego ^® polymer are available, eg the anionic non-associating polymers Acυlyn ^® 22, Aculyn ^® 28, Aculyn ^® 33 (cross-linked), AcusoP 810, AcusoP 823 and AcusoP 830 (CAS 25852 -37-3); (ii) crosslinked high molecular weight acrylic acid copolymers, such as those with an allyl ether of Sucrose or pentaerythritol crosslinked copolymers of Cio- _30- alkyl acrylates with one or more monomers selected from the group of acrylic acid, methacrylic acid and their simple, preferably with C _1-4 alkanols formed ester (INCI acrylates / C 10-30 alkyl acrylate crosspolymer ), which are obtainable, for example, from the company BFGood® under the trade name CarbopoP, for example the hydrophobized CarbopoP ETD 2623 and CarbopoP 1382 {INCI Acrylates / C10-30 alkyl acrylate crosspolymer) and CarbopoP AQUA 30 (formerly CarbopoP EX 473)

Other thickening agents are the polysaccharides and Heteropolysacchaπde, in particular the Polysaccharidgummen, for example gum arabic, agar, alginates, carrageenans and their salts, guar, guar gum, tragacanth, gellan Ramzan, dextran or xanthan and their derivatives, such as propoxylated guar, and their mixtures Other Polysaccharide thickeners, such as starches or cellulose derivatives, can be used alternatively, but preferably in addition to a polysaccharide, for example, starches of various origin and strong derivatives, for example hydroxyethyl starch, starch phosphate esters or starch acetates, or carboxymethylcellulose or its sodium salt, methyl, ethyl, hydroxyethyl, hydroxypropyl , Hydroxypropylmethyl- or hydroxyethyl-methyl-cellulose or cellulose acetate. A particularly preferred polysaccharide thickener is the microbial anionic heteropolysaccharide xanthan gum obtained from Xanthomonas campestπs and some other species under aerobic conditions with a molecular weight Not manufactured 2-15 ^χ 10 ⁶ and is available for example from Kelco under the trade names KeltroP and Kelzan ^® or by the company Rhodia under the trade name RhodopoP

As a thickener can continue phyllosilicates are used These include, for example, under the trade name Laponite ^® available magnesium or sodium magnesium layer silicates from Solvay Alkali, in particular Laponite ^® RD or Laponite ^® RDS, and magnesium silicates from Sud-Chemie, especially the OptigeP SH

When choosing the appropriate viscosity regulator, it must be ensured that the transparent impression of the cleaning agent is maintained, ie the use of the thickening agent should not cloud the agent

Viscosity regulators can be used in particular in cleaners according to the invention which are formulated as all-purpose cleaners Glass cleansers according to the invention, in a particularly preferred embodiment, are free of such additives Other ingredients

In addition to the components mentioned, the compositions according to the invention may contain further auxiliaries and additives, as are customary in such compositions. In particular, dyes, fragrances (perfume oils), antistatic agents, preservatives, corrosion inhibitors, complexing agents for alkaline earth ions, enzymes, bleaching systems, disinfectants, UV absorbers, electrolyte salts and UV stabilizers pay the amount of such additives is usually not more than 2 wt -% in the detergent , The lower limit of the use depends on the nature of the additive and can be, for example, up to 0.001% by weight and below for dyes. The amount of auxiliary substances is preferably between 0.01 and 1% by weight.

The water content of the agent according to the invention is usually at least 90% by weight, preferably at least 95% by weight.

The pH of the compositions according to the invention can be varied over a wide range, but preference is given to a range from 2.5 to 12 glass cleaner formulations and all-purpose cleaners in particular having a pH of 6 to 11, more preferably from 7 to 10.5 and Badreiniger in particular a pH of 2 to 5, most preferably from 2.5 to 4.0

The compositions according to the invention are preferably formulated ready for use. A formulation as concentrate to be diluted correspondingly before the application is likewise possible within the scope of the teaching according to the invention, the contents then being contained in the upper range of the respectively indicated quantitative ranges.

The compositions of the invention can be prepared by mixing directly from their raw materials, then mixing and final standing of the agent to freedom from bubbles

For application, the agent according to the invention should be applied to the surface to be cleaned in the form of a foam. A manually activated spray dispenser, in particular selected from the group comprising aerosol dispensers, even pressure-building spray dispensers, pump spray dispensers and trigger spray dispensers, is particularly suitable. in particular pump spray dispenser and Tπggersprύhspender with a container made of polyethylene, polypropylene or polyethylene terephthalate Such trigger bottles are offered for example by the company Afa-Polytec The spray head is preferably equipped with a Schaumduse. In addition, pump foam dispensers, such as those offered by the company Airspray, the company Keltec, the company Taplast or the Daiwa Can Company can be used. Accordingly, another subject of the invention is a product comprising an aqueous cleaning agent according to the invention and a spray dispenser, in particular an aqueous cleaning agent according to the invention and a trigger bottle with foam nozzle.

The compositions according to the invention are preferably used for glass cleaning, both for windows and for mirrors and other glasses. But they can also be used for cleaning hard surfaces, especially in glossy surfaces, where also a residue-free removal of the cleaning agent with good cleaning performance is highly desirable. Hard surfaces in the context of this application are therefore next windows and mirrors and other glass surfaces and, for example, surfaces of ceramic, plastic, metal or (especially painted) wood, which are found in household and commercial, such as bathroom ceramics, kitchen surfaces or floors. A third subject of the invention is therefore the use of an aqueous cleaning agent according to the invention or of a product according to the invention for cleaning hard surfaces, in particular glass.

For cleaning hard surfaces with the agent according to the invention, the following method has proven itself, which accordingly represents the fourth subject of the invention: The inventive aqueous cleaning agent is applied with a spray dispenser (trigger bottle) with foam nozzle on the surface to be cleaned and the foam, optionally after a contact time of up to 5 minutes, with a sponge, cloth, leather or another usually used for cleaning utensil on the surface triturated. The foam decomposes and is taken up together with the dissolved dirt, so that no appreciable residue remains on the cleaned surface.

embodiments

Inventive glass cleaners E1 to E4 and the comparative formulations V1 to V3 not covered by the subject of this application were prepared, the composition of which is shown in the table below. All amounts in% by weight of the active substance, based on the total agent, are given.

Table 1: Exemplary compositions

Texapon MLS, Cognis

² Texapon ^® LS 35, Cognis

³ PERLASTAN ^® C-30, Schill & Seilacher ⁴ APG 220, Cognis

⁵ Dehydol ^® LS 4, Cognis

⁶ Texapon ^® NSO, Cognis

⁷ Bindzil ^® 30/360, Akzo Nobel / Eka Chemicals

The compositions of the invention and the comparative formulations were tested for their flow rate and their residue behavior.

To determine the flow rate, the respective agent from a distance of 10 cm with a stroke of the trigger bottle from Afa Polytec was applied to a vertical surface and measured the time required for the resulting foam to slide down 20 cm. In each case three measurements were made and the mean value was formed. To determine the formation of residue, 1 stroke from the trigger bottle with a folded nonwoven of total size 20 cm × 20 cm (Chicopee, Duralace 60) was distributed on a mirror of size 30 cm × 60 cm and polished out in accordance with practice. The mirror was then visually inspected. While triturating the product, it was also determined whether the foam decays silently or with a crackling sound.

The results from these tests are shown in the following table: Table 2 Process speed and residue behavior

These results show that the compositions according to the invention all have a stable foam with a correspondingly satisfactory flow rate, but can be removed at the same time without appreciable residue formation, at the same time a slight crackling being acoustically perceptible. Although the comparative agents V1 and V3 also had stable foams which further crackled on disintegration, however, when triturated, as well as the fast-running and non-crackling agent V2, marked residues remained in the form of a lubricating film.

Claims

claims

1. Aqueous cleaning agent for hard surfaces, which is applied by means of a spray dispenser in the form of a foam on the surface to be cleaned, characterized in that it contains a fatty alcohol sulfate and / or a fatty acid sarcosinate and isopropanol and butyl glycol.

2 Aqueous cleaning agent according to claim 1, characterized in that the disintegration of the foam is acoustically perceptible in the form of a crackling.

3 Aqueous detergent according to any one of claims 1 and 2, characterized in that it is free of alkoxylated nonionic surfactants.

4 Aqueous detergent according to any one of claims 1 to 3, characterized in that it contains 0.01 to 1 wt .-%, preferably 0.02 to 0.5 wt -% fatty alcohol sulfate.

5. Aqueous detergent according to any one of claims 1 to 4, characterized in that it contains 0.01 to 0.5 wt .-% fatty acid sarcosinate.

6. An aqueous cleaning agent according to any one of claims 1 to 5, characterized in that it contains one or more further organic solvents.

7. An aqueous cleaning agent according to claim 6, characterized in that the one or more further organic solvents are preferably selected from the group consisting of C _1-6 -AIkOhOIe, C2-β-diols and mixtures thereof and in particular selected from the group comprising ethanol, n-butanol, ethylene glycol, diethylene glycol, propylene glycol, and mixtures thereof

8. An aqueous cleaning agent according to any one of the preceding claims, characterized in that it contains 0.01 to 0.5 wt .-%, preferably 0.025 to 0.1 wt .-% diethylene glycol

9. Aqueous detergent according to any one of the preceding claims, characterized in that it contains 0.01 to 5 wt .-%, preferably 0.1 to 3 wt .-% isopropanol.

10. An aqueous cleaning agent according to any one of the preceding claims, characterized in that it contains 0.1 to 6 wt .-%, preferably 1 to 5 wt .-% butyl glycol.

11 Aqueous detergent according to one of the preceding cleaning agents, characterized in that it further contains a colloidal silica sol, preferably in amounts of 0.01 to 0.6 wt .-%. A water-based cleaning agent according to any one of the preceding claims, characterized in that it contains ammonia, preferably in amounts of from 0.01 to 0.5% by weight. Hydrous detergent according to one of the preceding claims, characterized in that it contains further hard-surface cleaning agents contains usable excipients and additives, preferably those selected from the group comprising means for modifying or hydrophilizing surfaces, volatile alkali, acids, bases thickeners, dyes, fragrances, antistatic agents, preservatives, corrosion inhibitors, complexing agents for alkaline earth metal ions, enzymes, bleach systems , Disinfectants, UV absorbers, electrolyte salts and UV stabilizers and mixtures of the same product from a wassπgen cleaning agent according to any one of the preceding claims and a spray dispenser, in particular from a water-based cleaning agent according to any one of the preceding claims Use of a water-based cleaning agent or a product according to any one of the preceding claims for cleaning hard surfaces, in particular glass. Method for streak-free cleaning of hard surfaces, in particular glass, characterized in that an aqueous cleaning agent according to one of claims 1 to 13 a foam dispenser with Schaumduse is applied to the surface to be cleaned and the foam, optionally after a contact time of up to 5 minutes, with a sponge, cloth, leather or another usually used for cleaning utensil on the surface is triturated, wherein the foam decomposes and is taken up together with the dissolved dirt, so that no appreciable residue remains on the cleaned surface