PRODUCT FOR CLEANING WALLS, ROOFS, TERRACES AND FACADES

Abstract

The present invention relates to the field of cleaning, maintenance and protection of walls, roofs, terraces and building facades. More specifically, the present invention relates to a cleaning product comprising at least one alkylpolyglucoside and preferably a combination of at least one alkylpolyglucoside and at least one polyol in order to prevent and combat the adhesion of algae on any surface or materials, thus eliminating any resulting green, red or black deposits.

Description

Title of the invention: PRODUCT FOR CLEANING WALLS, ROOFS, TERRACES AND FACADES

[0001] The present invention relates to the field of cleaning, maintenance and protection of walls, roofs, terraces and facades of buildings. More specifically, the present invention relates to a cleaning product comprising at least one alkylpolyglucoside and preferably a combination of at least one alkylpolyglucoside and at least one polyol in order to prevent and combat the adhesion of algae to any surface or materials, thus eliminating any resulting green, red or black deposits.

[0002] The fight against these stains in the form of green, black or red traces on the various surfaces of buildings has been the subject of research for many years to achieve the development of effective products. Essential for the majority, it turns out however that the majority of products used and offered for sale fall into the category of biocidal products. The latter are defined as products intended to destroy, repel or render harmless harmful organisms, to prevent their action or to combat them, by chemical or biological action. Biocidal active substances must be the subject of a marketing authorization application (MA) in order to assess the hazards, risks and effectiveness of the products. Biocidal products and the biocidal active substances they contain are therefore regulated by regulations.

[0003] The most effective products used as fungicides or algicides generally include so-called biocidal components. Most means of preventing and treating algae, lichens, mosses, molds or cyanobacteria, more broadly microorganisms or macroorganisms, responsible for green, black or red marks on walls, roofs, and terraces of buildings, therefore consist mainly of products comprising quaternary ammoniums, chlorine derivatives, copper sulfate, silver salts, simazine. In the field of swimming pool disinfection, the most effective anti-algae products are essentially based on chlorine, bromine, active oxygen or all derivatives. There are also many products sold comprising organic acids as an agent for cleaning mosses and algae from roofs, walls or terraces.As non-limiting examples, the most commonly described acids are oxalic acid, pro-pionic acid, hydrochloric acid, glucuronic acid or acetic acid.

[0004] However, the unanimous trend is to minimize the use of biocides in favor of products using raw materials that are more environmentally friendly and present little or no risk to the user. The trend is therefore to couple these requirements for natural, biodegradable, bio-sourced products.

[0005] It is in this context that “Clean Technologies” have appeared, defined as industrial techniques and services using natural resources, energy, water, raw materials, with a view to significantly improving efficiency and productivity, in parallel with a reduction in induced toxicity and the volume of waste. It is with this objective that the applicant produced the composition according to the invention.

[0006] Various anti-lichen, anti-algae, anti-moss compositions are known from the prior art, which therefore eliminate the green, black and red traces resulting from the presence of said algae, lichens or mosses. But these products, as previously stated, are essentially made up of quaternary ammonium in terms of main active ingredients, chlorine derivatives, or organic acid.

[0007] The state of the art reveals several patents relating to anti-algae, anti-lichen or anti-moss compositions.

[0008] In this respect, we can cite patent application EP0623283 which describes an anti-algae composition based on calcium chloride, carboxylic acid and hydrogen peroxide. This patent application does not mention or suggest the use of an alkylpolyglucoside, or a polyol, or their combination in these indications.

[0009] Similarly, patent application EP0223533 claims the use of hydroxyalkylphosphine for controlling bryophytes, lichens, or algae. This patent application does not mention or suggest the use of an alkylpolyglucoside, or a polyol, or their combination in these indications.

[0010] Patent EP1819221 describes the use of glycerol as an anti-lichen or anti-moss agent. It does not describe or claim the action to combat the adhesion of algae. Furthermore, the anti-lichen and anti-moss action is only claimed from a concentration of 20% of glycerol in the composition. It is also indicated that no improvement was observed between the different concentrations of 99%, 65% or 20% of glycerol, nor in the presence of detergent. On the other hand, the addition of an organic acid clearly improves the elimination of lichens. This patent therefore does not mention the effectiveness, in combating the adhesion of algae, of an alkylpolyglucoside, or of a polyol at a concentration of less than 20% and / or of a combination of an alkylpolyglucoside and a polyol to clean green, red or black marks due to the presence of algae.

[0011] No prior art document therefore describes the effectiveness of an alkylpolyglucoside, or of the combination of an alkylpolyglucoside and a polyol for combating the adhesion of algae and thus eliminating the resulting green, black and red traces, said composition comprising the polyol at a concentration of less than 20% by total weight of the composition.

[0012] There is therefore a need to provide an effective product which avoids the use of so-called biocidal ingredients, by favoring active ingredients of natural origin capable of combating the adhesion of algae to any surface or material and thus cleaning the green, red or black traces resulting from their presence.

[0013] The present invention proposes to solve the problem mentioned above with a composition comprising at least one alkylpolyglucoside and, preferably in combination with at least one polyol for its use in combating the adhesion of algae on any surface or materials. By "surface" is meant in particular any wall, roof, terrace or facade of buildings; by "materials" is meant any construction materials in particular but not exclusively cement, slate, tiles, stone, wood. The objective is to obtain a product which acts in depth, in a curative manner on the green, red and black marks on the walls, roofs, terraces and / or facades of buildings, and / or on construction materials.

[0014] Surprisingly, the applicant found that the use of a combination of the two ingredients made it possible to obtain an effect superior to the effect of one or the other independently. Surprisingly, the applicant was able to demonstrate that used alone in a composition, the polyol or the alkylpolyglucoside, in the proportions of the composition according to the invention, had no or very little effect on the adhesion of algae, whereas in combination, a surprising effectiveness is observed.

[0015] One of the advantages of the composition according to the invention is to obtain a very effective cleaning product while using active ingredients of natural, plant origin, thus making them compatible with water collectors from the first rains after use.

[0016] Another advantage of the composition according to the invention is to obtain a so-called non-biocidal product, in other words which does not belong to the category of biocides subject to specific regulations.

[0017] By "cleaning" we mean the reduction, or even the elimination of any green, black or red traces or deposits due to the presence of algae, lichens, mosses, molds or cyanobacteria, more broadly due to the presence of microorganisms or macroorganisms.

[0018] By "fighting against the adhesion of algae", we mean a capacity to prevent the algae from attaching, and / or to remove it.

[0019] By "algae" in the present application is meant any algae proliferating on the surfaces of constructions, known to those skilled in the art, said algae being able to be, in a non-exhaustive manner, Apatococcus lobatus, Chlorella vulgaris, Klebsormidium flaccidum, Klebsormidium spp., Microspora sp., Stichococcus bacillaris, Trebouxia spp., Trentepohlia iolithus, Trentepohlia umbrina, or Trentepohlia sp.

[0020] By "non-biocidal product" is meant a product which aims to inactivate algae without causing their destruction. In the remainder of the text, the notion of non-biocidal product or non-biocidal composition will be used interchangeably.

[0021] The invention thus has as its first object a composition comprising at least one alkylpolyglucoside and at least one polyol for its use in combating the adhesion of algae to any surface and materials.

[0022] A second object of the present invention is a composition containing only an alkylpolyglucoside for its use in combating the adhesion of algae to any surface and construction materials.

[0023] By alkylpolyglucosides according to the invention, we mean the alkylpolyglucosides known to those skilled in the art, and used for their quality as non-ionic surfactants in a variety of cosmetic, domestic and industrial applications. Biodegradable and of plant origin from sugars, these surfactants are generally derivatives of glucose and fatty alcohols. It is therefore for their surfactant, wetting, detergent, foaming properties and their low irritant potential that alkylpolyglucosides are used. Alkylpolyglucosides differ from each other by the length of their alkyl chain. By alkylpolyglucosides which can be used according to the invention, the following non-exhaustive list can therefore be cited: Hexyl Glucoside, Lauryl Glucoside, iso Octyl Glucoside, Caprylyl / Capryl Glucoside or Caprylyl Glucoside, Coco Glucoside, Decyl Glucoside, Decyl / Octyl Glucoside or Caprylyl / Decyl Glucoside.Preferably Coco Glucoside, Caprylyl / Capryl Glucoside, Lauryl Glucoside, Decyl Glucoside, Decyl / Octyl Glucoside or Caprylyl / Decyl Glucoside are used in the composition according to the invention, alone or as a mixture.

[0024] The alkylpolyglucosides according to the invention are used at a concentration of between 0.1 and 5% by total weight of the composition, preferably between 0.5 and 1.5%. Those skilled in the art will be able to adapt the optimal concentration in accordance with the regulatory requirements which could be attached to this type of surfactant compounds.

[0025] The applicant has surprisingly demonstrated that the alkylpolyglucosides according to the invention could show an effect, even alone, against the adhesion of algae at a concentration greater than or equal to 2%.

[0026] Even more surprisingly, the applicant has demonstrated a so-called cooperative action of these compounds characterized by an amplified effect against the adhesion of algae and the cleaning of green, red or black traces, when at least one alkylpolyglucoside is combined with at least one polyol. By amplified effect, according to the invention, is meant an effect of the combination increased beyond the additivity, in comparison with the activity of each of the compounds taken individually. Even more surprisingly, at concentrations at which it was not possible to visualize an effect against the adhesion of algae of the two compounds taken alone, the combination showed an effectiveness in the fight against the adhesion of algae.

[0027] The polyols that can be used according to the invention, also called polyalcohols or glycols, are organic chemical compounds, derived from oses, characterized by the presence of a certain number of hydroxyl groups, or alcohol, and having at least 2 of said alcohol groups. Polyols are numerous and are therefore diversified by their carbon chain length, the nature of their carbon chain, linear or cyclic, and by the number of hydroxyl groups present. Polyols are known for very varied uses, as compounds used in the manufacture of polymers or food additives, in particular but not exclusively for their sweetening power.

[0028] Preferably, the polyols that can be used according to the invention are chosen from monosaccharide or disaccharide polyols. Among the monosaccharide polyols, triols, tetraols, pentols, hexols, heptols are distinguished. Preferably, the polyols that can be used in the composition according to the present invention are monosaccharide polyols and in particular but not exclusively sorbitol, mannitol, erythritol or glycerol.

[0029] In another preferred embodiment of the invention, the polyols used are other polyalcohols, in particular but not exclusively propylene glycol.

[0030] Preferably, the polyol is present in the composition according to the invention at a concentration of less than 20%. More preferably, the polyol is used at a concentration of between 5 and 19%.

[0031] The composition according to the invention comprises at least one liquid solvent. The solvent(s) will be chosen so as to obtain a homogeneous mixture of the different ingredients of the composition. Preferably, said solvent is an aqueous solvent and / or a non-aqueous solvent miscible with water. More particularly, the solvent that can be used in the composition according to the invention is water in a quantity sufficient to obtain the desired volume. In a particular embodiment according to the invention, the composition may be provided in a concentrated version to be diluted just before use. In a preferred embodiment according to the invention, the composition is provided in a ready-to-use diluted version.

[0032] According to the invention, other additives may also be added to the formulation of the composition. A person skilled in the art will be able to add any additive depending on the desired properties without altering its effectiveness against the adhesion of algae. Thus, in a non-limiting manner, surfactants, preservatives, antioxidants, enzymes or other microorganisms may be added to the composition according to the invention. More preferably, any additive will be chosen so as to comply with the requirements of “Clean Technologies”. Preferably, a person skilled in the art will not use organic acids in the composition according to the invention. Preferably, the additives according to the invention will be between 0.1% and 1.5% relative to the total weight of the composition.

[0033] The composition according to the invention is preferably in liquid form. Preferably, the composition is in a sprayable liquid form. By sprayable, we mean a composition which can be applied by means of a sprayer or an aerosol.

[0034] The invention therefore relates to a composition comprising, relative to the total weight of the composition: a. From 0.1 to 5% of at least one alkylpolyglucoside, b. Less than 20% of at least one polyol, c. The 100% balance being made up of the liquid solvent.

[0035] Preferably, the composition according to the invention comprises, relative to the total weight of the composition: a. From 0.5 to 1.5% of at least one alkylpolyglucoside, b. From 5 to 19% of at least one polyol, c. The 100% complement being made up of water.

[0036] Preferably, the composition according to the invention comprises, relative to the total weight of the composition: a. From 0.5 to 1.5% of at least one alkylpolyglucoside chosen from caprylyl / capryl glucoside, coco glucoside, lauryl glucoside, decyl glucoside, decyl / octyl glucoside or caprylyl / decyl glucoside, b. From 5 to 19% of at least one polyol chosen from sorbitol, mannitol, erythiol, glycerol, or propylene glycol c. The 100% complement being made up of water.

[0037] In a particularly preferred embodiment, the composition according to the invention comprises, relative to the total weight of the composition: a. From 0.5 to 1.5% of a caprylyl / decyl glucoside, b. From 5 to 19% of a glycerol, c. From 0.1 to 1.5% of additives, d. The 100% complement being made up of water.

[0038] In another preferred embodiment, the composition according to the invention comprises, relative to the total weight of the composition: a. From 0.5 to 1.5% of a coco glucoside, b. From 5 to 19% of a glycerol, c. From 0.1 to 1.5% of additives, d. The 100% complement being made up of water.

[0039] In another preferred variant, the composition according to the invention comprises, relative to the total weight of the composition: a. 0.5 to 1.5% of a caprylyl / decyl glucoside b. From 5 to 19% of a propylene glycol c. From 0.1 to 1.5% of additives d. The 100% complement being made up of water

[0040] The compositions according to the invention show good physical and chemical stability. By physical stability is meant the maintenance of the integrity of the composition, in terms of homogeneity. No settling or phase separation should be observed, even when subjected to different temperatures, over time. By chemical stability is meant in particular the stability of the active ingredients and in the case of the compositions according to the invention, the stability of the alkylpolyglucoside and the polyol. Said active ingredients must not show any sign of degradation under the storage conditions of the composition over time and at different temperatures. This would affect the effectiveness of the composition.

[0041] The present invention thus relates to a composition comprising at least one alkylpolyglucoside and at least one polyol for use in combating the adhesion of algae to surfaces and materials, characterized in that the polyol is present at a concentration strictly less than 20% by total weight of the composition.

[0042] Preferably, the invention relates to a composition characterized in that the alkylpolyglucoside or the mixture of alkylpolyglucoside is between 0.1% and 5% by total weight of the composition.

[0043] The invention also preferentially relates to a composition characterized in that the polyol or the polyol mixture is between 5% and 19% by total weight of the composition.

[0044] Preferably, the composition according to the present invention is liquid, and more preferably sprayable.

[0045] The composition according to the present invention is characterized in that it is applied to walls, roofs, terraces or facades of buildings or to construction materials.

[0046] The present invention also relates to the use of the composition according to the invention for cleaning green, red or black marks from walls, roofs, terraces, building facades or present on construction materials.

[0047] The following non-limiting examples serve only to illustrate the invention, without restricting its scope.

[0048] Example 1: Test of the effectiveness of alkylpolyglucosides in the absence of polyols

[0049] The objective of this test is to determine the effectiveness of alkylpolyglucosides in the absence of polyols against the adhesion of algae. For this, solutions of alkylpolyglucosides in different proportions were tested.

[0050] The effect of alkylpolyglucosides was evaluated by an in vitro microbiological test on a petri dish containing on the surface pre-cultivated algae of the Chlorella Vulgaris strain. Solutions of caprylyl / decyl glucoside at different proportions of 0.5%, 1% and 2%, water qsp 100% were prepared. 20 μL of each solution were placed on the petri dishes containing the algae. The dishes were then cultured. A reading of the effect of each solution is carried out at D+2 and D+7. The effect of each solution is determined according to the inhibition diameter obtained, which is reflected by the diameter of the discoloration zone visible on the dish. The larger the inhibition diameter, the more effective the tested solution is against the adhesion of algae. The results are presented in Table 1 below.

[0051] [Tables 1] Caprylyl glucoside <%) 0.5 1 7 - - ++• Efficacy at H7 - - • +++: Significant effect against algae adhesion • ++: Average effect against algae adhesion • +: Weak effect against algae adhesion • -: no effect against algae adhesion

[0052] No effect could be observed on the algae 2 days and 7 days after contacting the algae with caprylyl / decyl glucoside solutions in proportions of 0.5% and 1%.

[0053] Caprylyl / decyl glucoside, in the absence of polyols, for proportions of 0.5% and 1% therefore does not make it possible to combat the adhesion of algae. However, an average effect against the adhesion of algae is observed for a solution comprising a proportion of 2% of caprylyl / decyl glucoside. The same trend is observed with other alkylpolyglucosides.

[0054] Example 2: Test of the effectiveness of polyols in the absence of alkylpolyglucosides

[0055] The objective of this test is to determine the effectiveness of polyols in the absence of alkylpolyglucosides against the adhesion of algae. For this, polyol solutions in different proportions were tested.

[0056] The effect of polyols was evaluated by an in vitro microbiological test on a petri dish containing on the surface pre-cultivated algae of the Chlorella Vulgaris strain. Glycerol solutions at different proportions of 5%, 10%, 15%, 19%, 22%, 30% and 50%, water qsp 100% were prepared. 20 μL of each solution were placed on the petri dishes containing the algae. The dishes were then cultured. A The effect of each solution is recorded on D+2 and D+7. The effect of each solution is determined according to the inhibition diameter obtained, which is expressed by the diameter of the discoloration zone visible on the box. The larger the inhibition diameter, the more effective the tested solution is against algae adhesion. The results are presented in Table 2 below.

[0057] [Tables2] Glycerol (%) 50 30 19 15 10 Effectiveness at ++ - - - - - - Effectiveness at R7 -H- - - - - - - • +++: Significant effect against algae adhesion • ++: Average effect against algae adhesion • +: Weak effect against algae adhesion • -: no effect against algae adhesion

[0058] No effect could be observed on the algae 2 days and 7 days after contacting the algae with glycerol solutions in proportions ranging from 5% to 30%. Thus, glycerol, in the absence of alkylpolyglucosides, in proportions between 5% and 30% does not therefore make it possible to combat the adhesion of algae. Only an average effect against the adhesion of algae could be observed for a solution comprising a proportion of 50% glycerol. The same trend is observed with propylene glycol solutions.

[0059] Example 3: Test of the effectiveness of the composition according to the invention

[0060] Example 3 aims to demonstrate the effectiveness of the combination of the composition according to the invention, namely the combination of an alkylpolyglucoside and a polyol, against the adhesion of algae. For this, compositions combining a polyol and an alkylpolyglucoside in different proportions were tested to determine the effectiveness of this combination of compounds against the adhesion of algae.

[0061] Initially, different compositions were established for which different polyols (glycerol and propylene glycol) at different concentrations were associated with an alkyl polyglucoside (caprylyl / decyl glucoside). These different compositions were prepared according to the formulations presented in Table 3 below.

[0062] [Tables3] Composés Proporôoa Composîtson 1 Glycêrol 19% Cappdyl / Decyl glucoside Eau Qsp btr% Composition 2 Glycêrol 19 % Caprylyl / Decyl glucoside 1% Eau Qsp iœ% Composîtiofi 3 Glycêrol 19% CaptylyVDecyl glucoside 1,4% Eau Qsp 100% Composition 4 Glycêrol 10% CaprylvLDecyl glucoside Eau Qsp 100% Composition 5 Glycêrol W% CapnfhTDecyl glucoside 1% Eau Qsp iœ% Composition â Glycêrol 10% CaprdyTDecy 1 giucoside W% Eau Qsp 100% Composition? Glycêrol 5% CapndyLDecyl glucoside 0S5% Eau Qsp 100% Composition 8 Glycêrol 5% CapryiyVDecvl gtacoside 1% Eau Qsp 100% Composition 9 Glycêrol 5% Capry lyl©ecy 1 glucoside L4% Eau Qsp 100% Composition 10 Propylène Glycoi 19% Capry hLDecy 1 glucosîde 0,5% Water Qsp 10% Composition 11 Propylene Glycol 19% Caprylyl Decy 1 glucoside 1% Water Qsp 100% Composition 12 Propylene Glycol 19% Caprylyl Decy 1 glucoside L4% Water Qsp 100% Composition 13 Propylene Glycol 10% Caprylyl Decy 1 glucoside 0% Water Qsp 100% Composition 14 Propylene Glycol 10% Caprylyl-Oècyl glucoskfe 1% Water Qsp 100% Composition 15 Propylene Glycol 10% CaprylyLDecyl glucoside L4% Water Qsp 100% ,

[0063] The effectiveness of each of the compositions in Table 3 was evaluated 7 days (D+7) after contact with the algae of the Chlorella vulgaris strain. For this, the effect of the different compositions was evaluated by an in vitro microbiological test on a dish containing pre-cultivated Chlorella Vulgaris strain algae on the surface. 20 μL of each solution was placed on the petri dishes containing the algae. The dishes were then cultured. The effect of each solution was recorded at D+7. The effect of each solution was determined according to the inhibition diameter obtained, which is reflected by the diameter of the discoloration zone visible on the dish. The larger the inhibition diameter, the more effective the tested solution was against adhesion. algae. The results are presented in Table 4 below.

[0064] [Tables4] Polyol (W CaprÿlyEDecyl glucos id e C o ' Efficacy at D'+7 Composition 1 19 0.5 -h Composition 2 19 1 ++ Composition 3 19 1.4 +++ Composition 4 10 0.5 + Composition 5 10 1 ++ Composition 6 10 1.4 +++ Composition 7 5 0.5 Composition 8 5 .1 ++ Composition 9 5 1.4 +++ Composition 10 19 0.5 4- Composition 11 19 1 ++ Composition 12 19 1.4 4"tt Composition 13 10 0.5 -k Composition 14 10 i ++ Composition 15 10 1.4 • +++: Significant effect against algae adhesion • ++: Average effect against algae adhesion • +: Weak effect against algae adhesion • -: no effect against algae adhesion By “Polyol (%)” for compositions 1 to 9, we mean glycerol. By “Polyol (%)” for compositions 10 to 15, we mean propylene glycol.

[0065] The results obtained make it possible to determine the effectiveness of the combination of different polyols with a given alkylpolyglucoside. The applicant was able to observe that the combination of glycerol and caprylyl / decyl glucoside or the combination of propylene glycol and caprylyl / decyl glucoside made it possible to obtain effectiveness against the adhesion of algae 7 days after bringing the compositions of the invention into contact with algae of the Chlorella vulgaris strain. Surprisingly, the applicant was able to observe the effectiveness of the combinations of the different polyols with alkylpolyglucosides, whereas at the same concentrations, taken separately, no activity had been observed as described in Tables 1 and 2. In addition, the The researcher was able to observe that the effectiveness is increased all the more when the proportion of alkylpolyglucoside is high.

[0066] In a second step, other compositions were established to test different alkylpolyglucosides (Coco glucoside, Lauryl glucoside) at different concentrations associated with a polyol (Glycerol). These different compositions were prepared according to the formulations presented in Table 5 below.

[0067] [Tables5] Compounds Proportions Composition 16 Glycerol 19% Coco glucoside 0.5% Water Qsp 100% ■Composition 17 Glycerol 19% Coco glucoside 1% Water Qsp 100% Composition 18 Glycerol 19% Coco glucoside 1.4% Water Qsp 100% Composition 19 Glycerol 10% Coco glucoside 0.5% Water Qsp 100% Composition 20 Glycerol W% Coco glucoside 1% Water Qsp 100% Compositions 21 Glycerol 10% Coco glucoside 1.4% Water Qsp 100% Composition 22 Glycerol 19% Lauryl glucoside 0.5% Water Qsp 100% Composition 23 Glycerol 19% Lamyl glucoside 1% Water Qsp 100% Composition 24 Glycerol 19% Lauryl glucoside 1.4% Water Qsp 100% Composition 25 Glycerol 10% Lauryl glucoside 0.5% Water Qsp 100% Composition 26 Glycerol 10% Lauryl glucoside 1% Water Qsp 100% Composition 27 Glycerol 10% Lauryl glucoside 1.4% Water Qsp 100%

[0068] The effectiveness of each of these compositions was evaluated 7 days (D+7) after the in contact of each of them with the algae of the Chlorella vulgaris strain. For this, the effect of the different compositions was evaluated by an in vitro microbiological test on a dish containing on the surface pre-cultivated algae of the Chlorella Vulgaris strain. 20 μL of each solution was placed on the petri dishes containing the algae. The dishes were then put into culture. A reading of the effect of each solution is carried out at D+7. The effect of each solution is determined according to the inhibition diameter obtained, reflected by the discoloration zone visible on the dish. The larger the inhibition diameter, the more effective the tested solution is against the adhesion of algae. The results are presented in Table 6 below.

[0069] [Tableauxô] Glycerol (%) Alkylpoivdttcoside (%i Effectiveness at R7 Composition 16 19 0.5 Composition 17 19 1 Composition 18 19 1.4 -t—t—r Composition 19 10 0.5 -r Composition 20 10 1 Composition 21 10 1.4 —rn- Composition 22 19 0.5 Composition 23 19 1 TT Composition 24 19 L4 Composition 25 10 0.5 -T Composition 26 10 1 H—H Composition 27 10 1.4 -t—bT • +++: Significant effect against algae adhesion • ++: Average effect against algae adhesion • +: Weak effect against algae adhesion • -: no effect against algae adhesion By “Alkylpolyglucoside (%)” of compositions 16 to 21 is meant Coco glucoside. By “Alkylpolyglucoside (%)” of compositions 22 to 27 is meant Lauryl glucoside.

[0070] The results obtained, according to Table 6, make it possible to determine the effectiveness of the combination of different alkylpolyglucosides with a given polyol. The applicant was able to observe that the combination of glycerol and coco glucoside or the combination of glycerol and lauryl glucoside made it possible to obtain effectiveness against the adhesion of algae 7 days after bringing said compositions of the invention into contact with the algae of the Chlorella vulgaris strain. In addition, the applicant was also able to observe that the effectiveness is increased all the more as the proportion of alkylpoly- glucoside is high.

[0071] Thus, the applicant was able to demonstrate that the associations of the different proportions of polyols and alkylpolyglucosides demonstrate effects against the adhesion of algae 7 days after bringing the composition into contact with algae of the Chlorella Vulgaris strain.

[0072] Thus, surprisingly, the applicant was able to demonstrate that the combination of a polyol and an alkylpolyglucoside demonstrates a so-called cooperative action of these compounds by an amplified effect to combat the adhesion of algae, which is not the case for the effect generated by these compounds taken separately. Furthermore, it was observed that this action is dose-dependent on the proportion of alkylpolyglucoside.

[0073] The composition according to the invention thus makes it possible to effectively combat the adhesion of algae.

Claims

Claims

1. Composition comprising at least one alkylpolyglucoside and at least one polyol for use in combating the adhesion of algae to surfaces and materials, characterized in that the polyol is present at a concentration strictly less than 20% by total weight of the composition.

2. Composition according to claim 1 characterized in that the alkylpolyglucoside or the mixture of alkylpolyglucoside is between 0.1% and 5% by total weight of the composition.

3. Composition according to one of claims 1 to 2, characterized in that the polyol or the polyol mixture is between 5% and 19% by total weight of the composition.

4. Composition according to claim 1 or 2, characterized in that the alkylpolyglucoside is chosen from caprylyl / capryl glucoside, coco glucoside, lauryl glucoside, decyl glucoside, decyl / octyl glucoside or caprylyl / decyl glucoside.

5. Composition according to claim 1 or 3, characterized in that the polyol is chosen from sorbitol, mannitol, erythritol, glycerol or propylene glycol.

6. Composition according to one of the preceding claims 1 to 5, characterized in that the composition is liquid.

7. Composition according to claim 6, characterized in that the composition is sprayable.

8. Use of a composition according to one of claims 1 to 7 for cleaning green, red or black marks from walls, roofs, terraces, building facades or present on construction materials.