EP1232236B1 - Use of formulations for treating surfaces for temporarily improving dirt-removing behavior - Google Patents

Description

The invention relates to the use of formulations containing selected surfactants included, for repeated treatment of solid surfaces during or after Cleaning processes, with the result that later soiling or Contamination of the surfaces treated in this way using conventional means are easier to remove than when the dirt or contamination is on Adhere to surfaces that have not been treated with the formulations according to the invention were.

When cleaning surfaces, especially surfaces that come with stubborn dirt is often a lot of work required to remove as much residue as possible from the surfaces. The The detergent manufacturing industry offers chemical agents that are most suitable due to their good effectiveness Remove impurities. The manufacturers of cleaning machines or - Plants contribute to this through skilful plant design and coordinated Process to remove impurities from a wide variety of surfaces.

Although this interaction of cleaning agents, mechanics, temperature and Time works fine in many cases, there is a need for economic and ecological reasons, cleaning operations with less and / or better compatible cleaning agents and / or in a shorter time and / or at lower Temperature and / or with less mechanical / mechanical and / or manual Effort to perform.

In practical use, it is common for a Process parameters, e.g. of time, chemistry, temperature or mechanics another process parameter is simultaneously increased. This has the disadvantage that one in one criterion, e.g. chemical consumption, an improvement can achieve, but thereby worsening other criteria in purchase must take, such as at the temperature or too high energy consumption or Extension of the whole process.

The provision of surfaces with permanently adhesive connections would bring a reduction in cleaning effort. It has however, in practice it turned out that for this permanent equipment used compounds based on fluoroaliphatic silyl ethers or others systems based mostly on silicon compounds or fluorine compounds usually have various disadvantages. For one, these will be Permanent equipment across multiple cleaning processes contrary to yours Task removed from the surface, resulting in a loss of dirt-repellent effect. By making the strong adhering compounds, for example in the mechanical process, in the Washing device and get into the lines and other peripherals, resulting disadvantages, such as deposits and precipitations up to fist-sized Conglomerates of the coating in the cleaning device. The result is Malfunctions in the cleaning process up to machine standstill. It also adds that the silicon or commonly used for permanent equipment Fluorine compounds are usually hardly biodegradable and therefore from ecological Reasons are questionable.

Therefore, the present invention did not have the task of permanent equipment to achieve surfaces with dirt-repellent compounds, but specifically for formulations for the treatment of surfaces looking for that are applied during or after a cleaning process can, and as long as put the surface in a state that Contamination or contamination from the surfaces treated in this way Use of conventional means are easier to remove than in the case of so dirty or contaminated surfaces, the surfaces treated in this way should lose the desired effect if not during or after the next Cleaning process the treatment is renewed.

a) Alkylsulfate mit einer gesättigten oder ungesättigten, verzweigten oder linearen Alkylgruppe mit 8 bis 22 C-Atomen, besonders bevorzugt mit 10 bis 16 C-Atomen und ganz besonders bevorzugt Natriumlaurylsulfat,

b) Alkylglucoside mit einer gesättigten oder ungesättigten, verzweigten oder linearen Alkylgruppe mit 8 bis 22 C-Atomen, besonders bevorzugt mit 10 bis 16 C-Atomen und ganz besonders bevorzugt Laurylglukosid,

c) Fettsäure-ethanolamide mit einer gesättigten oder ungesättigten, verzweigten oder linearen Alkylgruppe mit 8 bis 22 C-Atomen, besonders bevorzugt mit 10 bis 16 C-Atomen und ganz besonders bevorzugt Laurylethanolamid,

in mit Wasser verdünnter oder unverdünnter Form enthalten, um im Falle von späterer Verschmutzung oder Kontamination der so behandelten Oberflächen die Verschmutzung oder Kontamination unter Einsatz üblicher Mittel besser zu entfernen, als bei genauso verschmutzten oder kontaminierten identischen Oberflächen, die nicht mit den beanspruchten Formulierungen behandelt wurden.
Unter üblichen Mitteln versteht die vorliegende Erfindung alkalische, neutrale oder saure Mittel, die je nach Oberfläche und Reinigungsverfahren mit unterschiedlichen Inhaltsstoffen, wie Tensiden, Enzymen, Oxydantien, Komplexbildnern, Chlorderivaten, antimikrobiellen Wirkstoffen, Korrosionsinhibitoren oder anderen Inhaltsstoffen versetzt sein können. The present invention thus relates to the use of formulations for the repeated treatment of solid surfaces during or after a cleaning process, the formulations at least one non-alkoxylated surfactant containing alkyl groups selected from the group of

a) alkyl sulfates with a saturated or unsaturated, branched or linear alkyl group with 8 to 22 carbon atoms, particularly preferably with 10 to 16 carbon atoms and very particularly preferably sodium lauryl sulfate,

b) alkyl glucosides with a saturated or unsaturated, branched or linear alkyl group with 8 to 22 C atoms, particularly preferably with 10 to 16 C atoms and very particularly preferably lauryl glucoside,

c) fatty acid ethanolamides with a saturated or unsaturated, branched or linear alkyl group with 8 to 22 C atoms, particularly preferably with 10 to 16 C atoms and very particularly preferably laurylethanolamide,

Contained in a diluted or undiluted form with water, in order to remove the contamination or contamination using conventional means in the event of subsequent contamination or contamination of the surfaces treated in this way, than in the case of identical surfaces which are equally contaminated or contaminated and which have not been treated with the claimed formulations ,
The present invention understands conventional agents to be alkaline, neutral or acidic agents which, depending on the surface and cleaning method, can be mixed with different ingredients, such as surfactants, enzymes, oxidants, complexing agents, chlorine derivatives, antimicrobial agents, corrosion inhibitors or other ingredients.

A fundamental property of surfactants is surface tension reduce and increase the hydrophilicity on surfaces. The expert, who is given the task of the present invention and believes that he can simply use any surfactant to achieve the desired effect quickly taught another. As can also be seen from the examples, the effect achieved by the present invention not just by every surfactant to reach.

In the event that the formulations to be used according to the invention Contain lauryl glucoside, these formulations are preferably used so that the treated surface due to the antimicrobial properties of Lauryl glucoside receives additional antimicrobial protection.

The formulations to be used according to the invention preferably contain additionally one or more antimicrobial components selected from the Groups of alcohols, aldehydes, antimicrobial acids, carboxylic acid esters, Acid amides, phenols, phenol derivatives, diphenyls, diphenylalkanes, urea derivatives, Oxygen, nitrogen acetals and formals, benzamidines, isothiazolines, Phthalimide derivatives, pyridine derivatives, antimicrobial surfactants Compounds, guanidines, antimicrobial amphoteric compounds, quinolines, 1,2-dibromo-2,4-dicyanobutane, iodo-2-propynyl-butyl-carbamate, iodine, iodophores, Peroxides, it being particularly preferred if the inventive Formulations as antimicrobial components one or more compounds selected from ethanol, n-propanol, i-propanol, 1,3-butanediol, phenoxyethanol, 1,2-propylene glycol, Glycerin, undecylenic acid, citric acid, 2-benzyl-4-chlorophenol, 2,2'-methylene-bis- (6-bromo-4-chlorophenol), 2,4,4'-trichloro-2'-hydroxydiphenyl ether, N- (4-chlorophenyl) -N- (3,4-dichlorophenyl) -urea, N, N '- (1,10-decandiyldi-1-pyridinyl-4-ylidene) -bis- (1-octanamine) dihydrochloride, N, N'-bis (4-chlorophenyl) -3.12-diimino-2,4,11,13-tetraaza-tetradecandiimidamid, quaternary ammonium compounds or Contain alkyl amines, guanidines, amphoterics.

It is further preferred that the formulations additionally contain one or more further surfactants selected from the groups of anionic, cationic, nonionic, amphoteric surfactants, the alkylamine oxides, the phosphoric acid esters and their salts and the silicone compounds contain, it being particularly it is preferred that the formulations to be used according to the invention as Another nonionic surfactant is an alkoxylated alkyl alcohol with 8 to 22 carbon atoms contained in the alkyl chain, particularly preferably from the group of mixed ethoxylates / propoxylates of branched or unbranched alkyl alcohols with 8 to 22 carbon atoms in the alkyl chain and End-capped ethoxylates of branched or unbranched alkyl alcohols with 8 to 22 carbon atoms in the alkyl chain and very particularly preferred from the group of ethoxylated and propoxylated alkyl alcohols with 12 to 22 carbon atoms in the alkyl part, butyl ether of an ethoxylated alkyl alcohol with 12 to 22 carbon atoms in the alkyl part and methyl ether of an ethoxylated alkyl alcohol with 12 to 22 C atoms in the alkyl part, it is also preferred that the according to the invention formulations using as a further nonionic surfactant at least one Alkyl polyglucoside with 8 to 14 carbon atoms in the alkyl group and 1 to 5 Contain glucose units and in a very particularly preferred version the surfactants contained in the formulations to be used according to the invention have defoaming properties, this embodiment in particular is preferred if, for example, the waiver of surfactants defoaming properties cause strong foaming and the cleaning or Flushing would be hindered in any way.

In a further preferred embodiment, they contain according to the invention formulations using additional solubilizers, such as Cumene sulfonate, monohydric alcohols such as isopropanol, butanol, ethanol and polyhydric alcohols such as glycols or glycerin and their ethers and esters, where the term solubilizer also includes surfactants such as fatty amine ethoxylates and others Substances with solubilizing properties can fall.

It is further preferred that those to be used according to the invention Formulations in a dosage form selected from aqueous solution, gel, Emulsion, paste, dispersion, powder, granules, flakes, beads, tablets, block-like shaped bodies, extrudate are present, it being particularly preferred if the formulations used from a non-aqueous dosage form and a water-soluble shell, which is preferably based on polyvinyl alcohol, and if very particularly preferred, the water-soluble casing is a part of the Contains formulation ingredients.

Furthermore, it is preferred that the too treating surface is treated by dipping. In another preferred embodiment of the present invention, it is preferred that the Formulations to be used according to the invention in undiluted or diluted form on the surfaces to be treated using aids that can be selected from brushes, sponges, rollers, cloths, rags, brushes, Wipers, rubber, pug, flat mop covers, spray devices is applied.

It is further preferred to use the formulations according to the invention with water to concentrations below 15000 ppm, particularly preferably to 15 to 10000 ppm and very particularly preferably to dilute to 50 to 1000 ppm and in this concentration to apply to the surfaces to be treated. The Contact time between the formulations to be used according to the invention and the surfaces to be treated is preferably at least the time is required to wet the surface to be treated, being particularly is preferred if the contact time is longer than 5 seconds and completely it is particularly preferred if there is no rinsing with water after the contact he follows. The treatment temperature is preferably 5 to 95 ° C and is particularly preferably between 20 and 85 ° C.

The formulations to be used according to the invention are preferably for the treatment of surfaces made of plastic and / or glass and / or ceramic and / or porcelain and / or quartz and / or granite and / or metal and / or wood used, it being particularly preferred that the to be treated Surfaces of dishes, windows, tiles, flooring, wood and stone surfaces and floors and walls and coated or uncoated tanks or other containers, lines, conveyor belts, containers, such as Reusable bottles made of glass, plastic, such as PET, or textiles.

In a particularly preferred embodiment, the inventive method is used Formulations to be used to be observed over a longer period observed the wear, susceptibility to scratching and corrosion of Plastics can be reduced.

It is also preferred that the formulations to be used according to the invention are brought into contact with the surfaces to be treated during or after manual or automatic dishwashing and / or cleaning operations, it being particularly preferred to use the formulations to be used according to the invention as rinse aid.
Another object of the present invention is a method for cleaning dishes, in which in at least one process step the dishes are brought into contact with agents which make the dishes treated in this way easier to clean after soiling in a next cleaning process than dishes who has not come into contact with these agents.

a) Alkylsulfate mit einer gesättigten oder ungesättigten, verzweigten oder linearen Alkylgruppe mit 8 bis 22 C-Atomen, ganz besonders bevorzugt mit 10 bis 16 C-Atomen und insbesondere Natriumlaurylsulfat,

b) Alkylglucoside mit einer gesättigten oder ungesättigten, verzweigten oder linearen Alkylgruppe mit 8 bis 22 C-Atomen, ganz besonders bevorzugt mit 10 bis 16 C-Atomen und insbesondere Laurylglukosid,

c) Fettsäure-ethanolamide mit einer gesättigten oder ungesättigten, verzweigten oder linearen Alkylgruppe mit 8 bis 22 C-Atomen, ganz besonders bevorzugt mit 10 bis 16 C-Atomen und insbesondere Laurylethanolamid.

In the process according to the invention, surfactants that foam and do not or only slightly foam come into contact with the dishes at the same time or in succession. It is not important for the solution of the task whether the foaming and non-foaming or low-foaming surfactants are added in the process in the form of a single agent or by adding several agents separately.
The present invention understands by foaming surfactants preferably non-alkoxylated surfactants containing alkyl groups with a saturated or unsaturated, branched or linear alkyl group with 8 to 22 carbon atoms and particularly preferably non-alkoxylated surfactants containing alkyl groups selected from the groups of

a) alkyl sulfates with a saturated or unsaturated, branched or linear alkyl group with 8 to 22 carbon atoms, very particularly preferably with 10 to 16 carbon atoms and in particular sodium lauryl sulfate,

b) alkyl glucosides with a saturated or unsaturated, branched or linear alkyl group with 8 to 22 C atoms, very particularly preferably with 10 to 16 C atoms and in particular lauryl glucoside,

c) Fatty acid ethanolamides with a saturated or unsaturated, branched or linear alkyl group with 8 to 22 carbon atoms, very particularly preferably with 10 to 16 carbon atoms and in particular laurylethanolamide.

As non-foaming or weakly foaming surfactants according to the present Invention preferably nonionic surfactants based on the group of the mixed Ethoxylates / propoxylates of branched or unbranched alkyl alcohols with 8 up to 22 C atoms, particularly preferably 12 to 22 C atoms in the alkyl chain and / or based on the end-capped ethoxylates of branched or unbranched alkyl alcohols with 8 to 22 carbon atoms, particularly preferably 12 to Understood 22 carbon atoms in the alkyl chain, it being very particularly preferred when the end group capping of the ethoxylated alkyl alcohol is a butyl ether or Represents methyl ether function.

The preferred embodiments of the in the method according to the invention Means to be used correspond to the preferred embodiments of the Formulations to be used according to the invention.

Another object of the present invention is an agent for use in the method according to the invention, in which a foaming surfactant and a non-foaming or weakly foaming surfactant are present next to one another in the agent, sodium lauryl sulfate and / or lauryl glucoside and / or lauryl being used as the foaming surfactant -ethanolamide are included.
In a preferred embodiment, the agent according to the invention contains an alkoxylated alkyl alcohol from the group of the mixed ethoxylates / propoxylates of branched or unbranched alkyl alcohols having 8 to 22 carbon atoms, particularly preferably 12 to 22 carbon atoms, as the non-foaming or low-foaming surfactant in the alkyl chain.
In a further preferred embodiment, the agent according to the invention contains, as a non-foaming or low-foaming surfactant, an end-capped ethoxylate of branched or unbranched alkyl alcohols having 8 to 22 carbon atoms, particularly preferably 12 to 22 carbon atoms in the alkyl chain, it being very particularly preferred is when the end group capping of the ethoxylated alkyl alcohol is a butyl ether or methyl ether function.

Example:

A practical test will be carried out in a dishwasher during the washing process Porcelain plate loaded with a rinse aid. It examines how Rinse aid, the formulations to be used according to the invention correspond to the soil release compared to commercially available rinse aids Effect.

Carrying out the experiment: 1. Preparation of the plates to be coated

In a household dishwasher (e.g. Miele), dinner plates for the commercial use with a diameter of 25 cm at a minimum of 70 ° C a commercially available dishwasher, e.g. Perclin Supra completely cleaned. These plates cleaned in this way are used for the experiments.

2. Prepare a one-tank dishwasher

The tank of a one-tank dishwasher (e.g. from Krefft) is filled with softened water and heated to an operating temperature of 60 ° C. The cleaning solution is adjusted so that the concentration of Perclin Supra in the tank is 1 g per liter of water.
The supply line for the rinse aid dispenser is connected between the boiler and the tank of the dishwasher (single-tank dishwasher). The grid position of the dosing device is set so that approx. 0.57 g of rinse aid is added per liter of softened water. The one-tank dishwasher is set to consume about 5 liters of softened water per rinse cycle.
The temperature of the water in the rinse aid is set to 75 ° C.

3. Execution of the experiment:

In the now prepared one-tank dishwasher, 6 are cleaned per test Dinner plate used by means of a basket. The dinner plates are there upright and offset in the crockery basket. The dishwasher is locked and the plates are cleaned with a cleaning step at 60 ° C for 60 seconds subjected to aqueous Perclin Supra solution. Following the cleaning step the rinse cycle starts immediately. In experiment 1 the aqueous 70 ° C warm solution of a commercial rinse aid 1 and Experiment 2, the aqueous 70 ° C. warm solution of a rinse aid 2 according to the invention applied to the dinner plate. After the rinse cycle is finished Dishwasher opened and the crockery basket with the plates removed. The so Treated dinner plates are after cooling and drying Room temperature according to a standardized test method with a Starch soiled. An approximately 6% aqueous solution is used for this Composition containing cornstarch after boiling to 75 ° C cooled and approx. 4 mL applied per plate with a brush. The treated like this Plates are left to stand for at least 3 hours and then left for 16 hours dry approx. 80 ° C. After cooling, the plates are as in the text below described further processed.

With the according to experiment 1 and experiment 2 with different rinse aids treated and then soiled dinner plates, the cleaning step in the one-tank dishwasher is repeated. For this, the tank of the one-tank dishwasher again filled with softened water. Per liter softened Water is added to 1 g of Perclin Supra dishwashing detergent. The one-tank dishwasher is brought to an operating temperature of 60 ° C. The soiled plates are again in an upright position by means of a Dish rack brought into the dishwasher and the one-tank dishwasher will be closed. The cleaning step, each lasting 60 seconds, is repeated five times repeated so that a total of five minutes is cleaned. Immediately afterwards, the Dishwasher opened and the crockery basket with the dishwasher's dinner plates taken. The dinner plates dry and cool at room temperature. The To visualize the remaining starch residues, dinner plates are briefly put into one prepared by default by dissolving iodine and potassium iodide in water Iodine solution immersed.

The remaining starch soiling made visible is assessed by means of comparators. The rating scale ranges from 0 = not clean (no starch distance visible) to 10 = optimally clean.
The dinner plates, which are treated according to experiment 1 with a commercial rinse aid 1, achieve an average value of 3.5.
The dinner plates, which are treated according to experiment 2 with a rinse aid 2 according to the invention and otherwise go through the same conditions, achieve an average value of 6.5.

4. Rinse aids 1 and 2 and their influence on the result

Rinse aid 1 for comparative experiment 1 Rinse aid 2 for experiment 2 sodium lauryl sulfate 0 5 Softened water 60 60 Nonionic fatty alkoxylate 8th 3 Non-ionic, low-foaming fatty alkoxylate 21 21 Sodium cumolsulphonate (40%) 7 7 Ethanol (96%) 4 4 Evaluation of the result 3.5 6.5

When using a formulation to be used according to the invention, the evaluation of the cleaning result is three points better than in the case of dinner plates which are treated with conventional formulations.
Treatment with a formulation that contains sodium lauryl sulfate thus brings visible relief to the cleaning process of surfaces, as shown in the example of the dinner plate.

Claims (15)

1. The use of formulations containing at least one non-alkoxylated alkyl-group-containing surfactant selected from the group of

   a) alkyl sulfates containing a saturated or unsaturated, branched or linear alkyl group with 8 to 22 carbon atoms,

   b) alkyl glucosides containing a saturated or unsaturated, branched or linear alkyl group with 8 to 22 carbon atoms,

   c) fatty acid ethanolamides containing a saturated or unsaturated, branched or linear alkyl group with 8 to 22 carbon atoms,

   in water-diluted or undiluted form in a repeated treatment of solid surfaces during or after manual or automatic dishwashing and/or cleaning operations as agents for improving the removability of soil or contamination subsequently applied to the surfaces thus treated.
2. The use claimed in claim 1, characterized in that sodium lauryl sulfate is present as the group a) surfactant.
3. The use claimed in claim 1, characterized in that lauryl glucoside is present as the group b) surfactant.
4. The use claimed in claim 1, characterized in that lauryl ethanolamide is present as the group c) surfactant.
5. The use claimed in one or more of claims 1 to 4, characterized in that the formulations additionally contain one or more antimicrobial components selected from the groups of alcohols, aldehydes, antimicrobial acids, carboxylic acid esters, acid amides, phenols, phenol derivatives, diphenyls, diphenyl alkanes, urea derivatives, oxygen, nitrogen acetals and formals, benzamidines, isothiazolines, phthalimide derivatives, pyridine derivatives, antimicrobial surface-active compounds, guanidines, antimicrobial amphoteric compounds, quinolines, 1,2-dibromo-2,4-dicyanobutane, iodo-2-propynyl-butyl-carbamate, iodine, iodophores, peroxides.
6. The use claimed in one or more of claims 1 to 5, characterized in that the formulations additionally contain one or more other surfactants selected from the groups of anionic, cationic, nonionic, amphoteric surfactants, alkylamine oxides, silicone compounds and phosphoric acid esters and salts thereof.
7. The use claimed in claim 6, characterized in that an alkoxylated alkyl alcohol containing 8 to 22 carbon atoms in the alkyl chain is present as the other nonionic surfactant.
8. The use claimed in any of claims 1 to 7, characterized in that the formulations additionally contain solubilizers.
9. The use claimed in one or more of claims 1 to 8, characterized in that the formulations are in the form of an aqueous solution, gel, emulsion, paste, dispersion, powder, granules, flakes, pearls, tablets, block-like shaped bodies or an extrudate.
10. The use claimed in claim 9, characterized in that the formulations consist of a non-aqueous preparation and a water-soluble shell, preferably based on polyvinyl alcohol.
11. The use claimed in claim 10, characterized in that the water-soluble shell contains part of the constituents of the formulation.
12. The use claimed in one or more of claims 1 to 11, characterized in that the materials of the surface to be treated are selected from plastics and/or glass and/or ceramic and/or china and/or quartz and/or granite and/or metal and/or wood.
13. The use claimed in claim 12, characterized in that the surface to be treated is treated by immersion.
14. The use claimed in claim 12, characterized in that the surface to be treated is treated using utensils which may be selected from paintbrushes, sponges, rollers, cloths, rags, brushes, wipers, rubber, mops, flat mop heads or sprayers.
15. The use claimed in one or more of claims 1 to 14, characterized in that the formulations are used as rinse aids.