WO2022253611A1

WO2022253611A1 - Toilet system having a multiphase gel composition

Info

Publication number: WO2022253611A1
Application number: PCT/EP2022/063869
Authority: WO
Inventors: Bernhard Orlich; Ulf Arno Timmann; Tatiana Schymitzek
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2021-06-02
Filing date: 2022-05-23
Publication date: 2022-12-08
Also published as: EP4098734A1

Abstract

The invention relates to a system comprising a toilet rim block (10) having at least one chamber (20), wherein: a solid gel sanitary agent is present in the chamber (20) of the toilet rim block; the solid gel sanitary agent comprises at least a first composition (31) and a second composition (32); the sanitary agent adheres to the chamber casing; and the chamber casing is completely closed on at least one side (24) and the agent adheres to the completely closed side (24) of the chamber casing; and the first composition (31) differs from the second composition (32).

Description

Toilet system with a multi-phase gel composition

Sanitary agents in gel form are known from the prior art. Such are used as self-adhesive sanitary means. These self-adhesive sanitary products are suitable for independently adhering to surfaces, i.e. without additional aids. In particular, toilet blocks which have a self-adhesive composition are known from the prior art. Such toilet blocks can be attached to the wall of the toilet bowl without a basket and adhere there independently even after a number of flushing processes. Such gels are also referred to as solid gels. For example, the document EP 1086199B1 describes a self-adhesive sanitary agent in the form of a gel, which automatically adheres to the surfaces of objects that are usually used in the sanitary area, such as toilet bowls, and is only rinsed off the toilet surface after several flushes. DE 102004 056554 A1, EP 1 894 989 A1 and WO 2014/033259 A1 also describe such gels which are attached to the wall of the toilet bowl without a basket using an applicator. Such an application is also referred to as a "cageless" application.

Furthermore, non-self-adhesive gels have been described in the prior art. These gels are liquid and do not stick to the inner wall of the basket and are described in DE 197 15872 A1 and EP 1 029 911 A1. These gels are deformable under the action of force.

In addition to gel-like cleaning agents, solid cleaning agent shaped bodies are also known which, if they are used in a small basket, are referred to as rim blocks.

Overall, the rinsing behavior of the sanitary cleaning agents known from the prior art is not yet satisfactory.

The present invention therefore provides a system comprising a toilet basket with at least one chamber, wherein a solid gel-like sanitary agent is present in the compartment of the toilet basket, wherein the solid gel-like sanitary agent has at least a first composition and a second composition, wherein the sanitary agent adhered to the chamber envelope; and the chamber envelope is fully closed on at least one side and the agent adheres to the fully closed side of the chamber envelope; and the first composition differs from the second composition.

The use of the second composition of the sanitary agent in a toilet basket in the form of a solid gel enables a visually attractive, transparent product with particularly advantageous release characteristics with regard to surfactants, colorants and, in particular, fragrances. Due to the self-adhesive properties of the gel, it adheres to the surface of the toilet basket. This has the advantage that the gel contained in the basket is not dissolved from the outside in, as is the case with conventional toilet blocks, but has a dissolving behavior such that the quantities of gel that are directly adhering to the chamber wall of the toilet basket are rinsed off last. By using second compositions, the release profile of the agents described can be flexibly adjusted.

Overall, there are significant differences in the flushing behavior of the toilet systems described here, which include solid gels compared to solid toilet blocks (rim blocks), since the solid toilet blocks in such rim blocks do not adhere to the surface of the chamber but rather lie loosely in the chamber and move around whose position is changed by the action of force, for example by transport, but in particular by flushing.

It was therefore found in connection with the present invention that the knowledge that is known from the field of solid toilet blocks (cleaning agent shaped bodies) cannot be readily transferred to the gel-like compositions described here. Furthermore, the system according to the invention, comprising a basket and a self-adhesive gel, also offers further advantages over solid toilet blocks: In particular, it was found that solid toilet blocks are removed evenly on all sides. The situation is different with the present invention, in which the areas of the gel visible to the user, for example when using a transparent toilet bowl, are only detached at the very end of its useful life, and the original visual impression is thus retained.

Furthermore, the system according to the invention, comprising a basket and a self-adhesive gel, offers advantages over “cageless” gels, which are attached to the surface of the toilet bowl with an applicator. In particular, the use of a basket, unlike the "cageless" application, allows the basket with the gel to be placed just below the rim of the toilet and aligned in relation to the flow of flushing water, so that water is directed to the point where where the gel is.

This enables better rinsing behavior than with "cageless" applications. Compared to such "cageless" approaches, the system according to the invention shows a completely different rinsing behavior.

Furthermore, the system according to the invention comprising a basket and a self-adhesive gel offers advantages over a system comprising a basket and a non-solid or non-self-adhesive gel. In particular, it was found that in the case of non-self-adhesive gels, after several rinsing cycles, these gels are used up in a manner that the consumer can see and the original visual impression is therefore not retained. The situation is different with the present invention, in which the areas of the gel that are visible to the user from the outside, for example when using a transparent toilet bowl, only appear at the very end of its useful life removed and the original visual impression is retained. Furthermore, since such liquid gels are freely deformable and miscible, there is no possibility of providing two different compositions which are arranged in layers on top of one another, since the phases would mix.

If the total amount in % by weight is referred to in connection with the present application, the total amount in the first composition and/or in the second composition and/or the total amount based on the entire agent is to be regarded as disclosed.

If the presence of individual components in the agent is described in connection with the present application, this component can be present in the first composition and/or in the second composition.

According to a preferred embodiment, the gel has a cubic phase. Solid gels usually form a cubic gel phase and thus differ from liquid gels.

According to a preferred embodiment, the system is described, wherein the first composition and/or the second composition has at least one fragrance. The fragrance in the first composition preferably differs from the fragrance in the second composition in terms of its type and/or its quantity. Preferably, the second composition has a greater amount of fragrance than the first composition.

According to a preferred embodiment the system is described wherein the first composition and/or the second composition comprises at least one dye. The colorant in the first composition preferably differs from the colorant in the second composition in its nature and/or its amount. Preferably the second composition has a greater amount of dye than the first composition.

According to a preferred embodiment, the second composition has a larger amount of at least one of the surfactants, preferably a larger total amount of surfactants, than the first composition.

According to an alternative preferred embodiment, the second composition has a lower amount of at least one of the surfactants, preferably a lower total amount of surfactants, than the first composition. This improves the rinsing behavior. According to a preferred embodiment, the system is described with the first composition being layered on top of the second composition. A phase boundary thus exists between the two compositions. The first composition is therefore materially directly adjacent to the second composition.

According to a preferred embodiment, the system is described with the closed side of the chamber envelope being spherical.

According to a preferred embodiment, the system is described with the second composition adhered to the closed side of the chamber envelope.

According to a preferred embodiment, the system is described wherein the first composition forms the exposed surface of the agent at the open side of the chamber envelope prior to use of the gel, and is thus initially rinsed off upon use, while the second composition layered underneath is not initially flushed with the rinse water comes into contact.

According to a preferred embodiment, the system is described with the chamber envelope having the shape of a hemisphere.

According to further embodiments, the agent can also have further compositions, ie a third composition and/or a fourth composition, etc., which are preferably arranged in layers one on top of the other.

According to a preferred embodiment the system is described wherein the sanitary agent further comprises an anionic surfactant.

According to a preferred embodiment the system is described wherein the anionic surfactant is an ether sulphate, preferably a fatty acid ethyl ether sulphate and particularly preferably a lauryl ether sulphate.

According to a preferred embodiment, the system is described in which the anionic surfactant is present in an amount of 1% by weight to 20% by weight, preferably in an amount of 2% by weight to 10% by weight, based on the total amount the first composition and/or the second composition and/or based on the entire agent.

According to a preferred embodiment, the system is described in which the nonionic adhesion promoter is a fatty alcohol alkoxylate which preferably has a degree of alkoxylation of 20 to 50 EO, preferably 20 to 45. According to a preferred embodiment, the system is described in which the agent has a further non-ionic surfactant.

According to a preferred embodiment, the system is described in which the further nonionic surfactant is a fatty alcohol alkoxylate, preferably with a degree of alkoxylation of 5 to 15 EO.

According to a preferred embodiment, the system is described wherein the fatty alcohol alkoxylate has a C9 to C12 alkyl radical, and wherein the alkyl radical is preferably an unbranched alkyl radical.

According to a preferred embodiment, a composition is provided in which the nonionic adhesion promoter is a fatty alcohol alkoxylate which preferably has a degree of alkoxylation of 20 to 50 EO, preferably 20 to 35.

According to a preferred embodiment, a sanitary composition is provided, the composition comprising a further nonionic surfactant. According to a preferred embodiment, a composition is provided in which the further nonionic surfactant is a fatty alcohol alkoxylate, preferably with a degree of alkoxylation of 5 to 15 EO. According to a preferred embodiment, a composition is provided in which the fatty alcohol alkoxylate (further nonionic surfactant) has a C9 to C12 alkyl radical, and the alkyl radical is preferably an unbranched alkyl radical.

In the context of the present invention, the term "sanitary agent" is used to mean a "composition suitable for use as a sanitary agent". Whenever “sanitary agent” or simply “agent” is mentioned in connection with the present invention, a solid gel composition is meant unless otherwise stated.

In the context of the present invention, the term "EO" stands for alkoxy groups in general. For example, the expression “20 EO” means the presence of 20 alkoxy groups, which are particularly preferably present as a block in the molecule in question and are even more preferably arranged as end groups in the molecule in question. In particular, the term "EO" stands for the group containing ethoxy, propoxy and butoxy groups, more preferably for the group containing ethoxy and propoxy groups and particularly preferably only for ethoxy groups.

In the context of the present invention, the terms "lipophilic" and

"Lipophilia" used synonymously with the terms "hydrophobic" or "hydrophilia". In the context of the present invention, "make flowable" means that the composition is heated to a point where it has reached a viscosity at which the composition is flowable such that the composition can be poured out and thus into a other container, in particular the chamber of a toilet basket, can be filled.

The composition can contain polyols, preferably glycerol, in an amount of 3% by weight to 35% by weight, in particular 5 to 15% by weight.

In the presence of water, the adhesion promoter causes the agent to adhere to a surface and preferably forms network-like structures. These give the agent the required dimensional stability even when flushed in a toilet. The sanitary agent is preferably designed to be self-adhesive, i.e. the sanitary agent is suitable for adhering to surfaces independently, in particular without additional aids.

The adhesion promoter can either be hydrophilic overall, but preferably partially hydrophilic and partially hydrophobic, i.e. the molecules of the adhesion promoter are preferably longer-chain molecules which have at least one hydrophobic residue and also include a hydrophilic group which can be dissolved with a preferably polar solvent, in particular with water. interacts. Preferably, the adhesion promoters are unbranched molecules, i.e. linear molecules. This enables the desired network formation.

Polyalkoxy groups, preferably polyethoxy, polypropoxy or polybutoxy, or also mixed polyalkoxy groups such as, for example, can be used as hydrophilic radicals

Poly (ethoxypropoxy) groups are used. A fatty alcohol alkoxylate which has both ethoxy and propoxy groups is referred to in connection with the invention as a mixed fatty alcohol ethoxypropoxylate.

A particularly preferred hydrophilic group is a polyethoxy radical, which more preferably comprises between 15 and 55 ethoxy groups, more preferably between 20 and 3§50 and particularly preferably between 22 and 28 ethoxy groups. Furthermore, polyethoxy radicals with preferably between 35 and 50 ethoxy groups have also proven to be useful.

Linear, ie unbranched, alkyl radicals are preferably suitable as the hydrophobic radical. This favors the suitability for network formation. Even-numbered alkyl radicals are preferred - because of their better biodegradability. Alkyl radicals having at least more than eleven carbon atoms are particularly preferred. The number of carbon atoms is more preferably 9 to 30, in particular 7 to 25. Preferred adhesion promoters are polyalkoxyalkanes, in particular a mixture of alkyl ethoxylate with 20 to 50 EO, in particular 25 EO or else 40 EO, the alkyl chain more preferably having C16-25 carbon atoms.

As the number of alkoxy groups decreases, the adhesion promoter becomes more lipophilic. In this way, in particular, the solubility of hydrophilic substances, such as fragrances or dyes, can be regulated.

As the degree of alkoxylation increases, the adhesion promoter becomes more hydrophilic, which in particular can influence the formation of a network and the ability to form a visually appealing gel and can also influence the rinsing behavior of the sanitary agent.

The type and in particular the length of the hydrophobic residue also has an effect on the lipophilicity of the adhesion promoter, longer alkyl residues in particular increasing the hydrophobicity of the adhesion promoter. Overall, a suitable choice of the hydrophobic residue, in particular a linear, d. H. unbranched, alkyl radical on one side, in accordance with the degree of alkoxylation, d. H. the number of alkoxy groups, provide a tailor-made adhesion promoter that is optimized with regard to the rinsing behavior of the sanitary agent, the adhesion to surfaces, and with regard to the solubility of hydrophobic or hydrophilic additives.

The amount of adhesion promoter to be used also depends on its hydrophilicity and its network-forming ability. This is preferably 10 and 40% by weight, which is particularly preferred when using polyalkoxyalkanes.

"Fatty alcohol alkoxylates" within the meaning of the present invention are compounds which comprise at least one hydrophobic residue and at least one hydrophilic residue, the hydrophilic residue being at least one EO unit which is bonded to the hydrophobic residue. The hydrophobic radical derives in particular from aliphatic, long-chain, monohydric alcohols. These can occur naturally or synthetically, with natural alcohols being preferred. The hydrophobic residue is preferably branched. The hydrophobic radical preferably has between 6 and 22 carbon atoms and can also be mono- or polyunsaturated, with fully saturated radicals being preferred.

The fatty alcohol alkoxylate preferably has a degree of alkoxylation of 10 to 50 EO, in particular 20 to 45 EO. Alternatively, the fatty alcohol alkoxylate has a degree of alkoxylation of 5 to 15 EO. More preferably, the gel composition comprises a first fatty alcohol alkoxylate having a degree of alkoxylation of 10 to 50 EO, in particular 20 to 45 EO, and a second fatty alcohol alkoxylate having a degree of alkoxylation of 5 to 15 EO.

In particular, the gel composition can contain a first fatty alcohol alkoxylate with a degree of alkoxylation of 20 to 30 EO in an amount of 15 to 40% by weight (as adhesion promoter) and a second fatty alcohol alkoxylate with a degree of alkoxylation of 5 to 15 EO in an amount of 2 to 20% by weight % (as a further non-ionic surfactant).

The fatty alcohol alkoxylate is preferably a fatty alcohol ethoxylate, where the fatty alcohol alkoxylate has at least one ethoxy radical, and/or a fatty alcohol propoxylate, where the fatty alcohol alkoxylate has at least one propoxy radical. The fatty alcohol alkoxylate more preferably comprises exclusively ethoxy and/or propoxy groups as alkoxy groups. Even more preferably, the fatty alcohol alkoxylate comprises exclusively ethoxy groups as alkoxy groups. The alkyl radical preferably has at least 7 carbon atoms, in particular 7 to 20 carbon atoms, the alkyl radical being in particular an unbranched alkyl radical.

According to a preferred embodiment, a sanitary composition is described, wherein the composition has an acidic pH, measured in a 10% solution of the composition in water, and wherein the composition further comprises a first fatty alcohol alkoxylate having a degree of alkoxylation of 20 to 30 EO in an amount of 15 to 40% by weight (as an adhesion promoter) and a second fatty alcohol alkoxylate with a degree of alkoxylation of 5 to 15 EO in an amount of 2 to 20% by weight (as a further nonionic surfactant). The agent can also include ionic surfactants or be free of such.

According to a further preferred embodiment, a sanitary composition is described, wherein the composition has an acidic or neutral pH, measured in a 10% solution of the composition in water, and wherein the composition further comprises a first fatty alcohol alkoxylate having a degree of alkoxylation of 20 to 30 EO in an amount of 15 to 40% by weight (as adhesion promoter) and a second fatty alcohol alkoxylate with a degree of alkoxylation of 5 to 15 EO in an amount of 2 to 20% by weight (as further nonionic surfactant) and an anionic Surfactant in an amount of 2 to 10% by weight.

According to a particularly preferred embodiment, a sanitary agent is described comprising at least one non-ionic adhesion promoter, the agent having a pH of 5 to 9, preferably 6 to 8, measured in a 10% solution of the agent in water , and wherein the agent has an anionic surfactant, which is preferably an ether sulfate, preferably a fatty acid ethyl ether sulfate and more preferably a sodium lauryl ether sulfate, and wherein the anionic surfactant in an amount of 1 wt .-% to 20 wt .-%, preferably in an amount of 2 wt .-% to 10 wt .-%, based on the Total amount of the agent is present, and wherein the non-ionic adhesion promoter is a fatty alcohol alkoxylate, which preferably has a degree of alkoxylation of 20 to 50 EO, preferably from 20 to 35 and is present in an amount of 15 to 35% by weight and the agent also further non-ionic surfactant, wherein the further non-ionic surfactant is a fatty alcohol alkoxylate with a degree of alkoxylation of 5 to 15 EO and a C9 to C12 alkyl radical and the further non-ionic surfactant in an amount of 2 to 12 wt. % is present in the composition.

The type and amount of solvent depends, among other things, on the hydrophilicity of the adhesion promoter used and can be varied accordingly. In order to provide the desired number of adhesion sites with the adhesion promoter molecules, the solvent should be present at at least 20% by weight, preferably between 35 and 75% by weight, based on the gel composition.

The solvent is preferably a polar solvent, more preferably an aqueous solvent, and in particular water. In particular, the gel composition comprises water in an amount between 40 and 75% by weight based on the total amount of the gel composition.

The gel composition preferably comprises fragrances and/or fragrances. This can improve the room air.

The gel composition preferably includes preservatives. Such preservatives are available, for example, under the trade names Acticide B 20, Acticide MBR 1 and Acticide SR 1500. The gel composition preferably comprises one or more from the group consisting of isothiazolinone, phenoxyethanol, methylisothiazolinone and benzisothiazolinone (BIT) as preservatives. Preferably, and depending on the type of preservative, it is contained in the gel composition in amounts of 0.0001 to 1% by weight.

The agent according to the invention preferably has an ointment-like, pasty and/or cream-like consistency.

In connection with the present invention, a “solid gel” is preferably understood to mean a disperse system that consists of at least two components. The solid component forms a spongy, three-dimensional network, the pores of which are at least partially filled with a solvent. The sanitary means are preferably designed as gels. Such gels preferably have a different microstructure or nanostructure than conventional sanitary agents, which not only leads to a special visual appearance due to the transparency of the gel, especially in the case of toilet applications, but also enables additives such as dyes and, in particular, fragrance compositions to be released uniformly.

According to a further aspect, the production of a system is described, comprising the steps:

rendering the second composition flowable by heating;

placing the second composition in the basket;

cooling and curing the second composition;

rendering the first composition flowable by heating;

placing the first composition in the basket on top of the second composition; cooling and curing of the first composition.

In the case of the agents according to the invention, it was observed that they solidify or harden quickly without the use of additional cooling. The resulting reduced energy consumption results in lower costs and enables more ecological and efficient large-scale industrial production of the sanitary products.

The front of the chamber shell preferably has no opening. On the one hand, this prevents a child or a pet from coming into contact with an active substance present in the chamber. Furthermore, because the first side of the chamber shell has no opening, the active substance can be filled into the basket through an opening on the second side during the manufacturing process. In the case of toilet baskets with one or more openings on the first side, the active substance would not remain in the basket when it was filled, but would flow through it. Advantageously, a toilet basket according to the embodiment described can be filled with an active substance, the substance solidifying only after it has been filled. It is therefore not necessary for the active substance to be preformed into the desired geometry (eg a sphere) and only then introduced into the chamber. Rather, the shaping is achieved in that the active substance is filled into the chamber and the chamber geometry acts as a matrix when the active substance solidifies. In particular, the embodiment described allows pasty means to be used as active substances, since such pasty gel-like means, because of their consistency and "stickiness", are difficult to preform and place in their final form in the chamber of the basket. Preferred embodiments and the principle according to the invention are explained below with reference to the figures:

Figure 1 now shows a system according to the invention. The system includes a toilet basket 10 . This has four chambers 20 . A solid, gel-like sanitary agent is present in the chambers 20 of the lavatory basket 10 . The solid gel sanitary agent now comprises a first composition 31 and a second composition 32 with the sanitary agent adhered to the chamber envelope, the chamber envelope being fully closed on at least one side 24 and the agent adhered to the fully closed side 24 of the chamber envelope . The first composition 31 differs from the second composition 32. In particular, the colorants and/or the fragrances of the first composition 31 can differ from those of the second composition. However, the surfactant content of the first composition 31 can also differ from the surfactant content of the second composition 32, with differences in the type and/or amount of surfactants being able to exist. The chamber envelope is in the shape of a hemisphere, with the closed side 24 of the chamber envelope being spherical and the open side 22 of the chamber envelope being planar. The first composition 31 is layered on the second composition 32 . Due to the presence of two different compositions, the rinsing profile of the sanitary agent can be flexibly adjusted, and in particular the geometry of the chamber 20 can also be taken into account.

FIG. 2a, FIG. 2b and FIG. 2c illustrate the principle according to the invention, with one of the chambers 20 being shown individually. As already described in relation to FIG. 1, the chamber shell has the shape of a hemisphere, with the closed side 24 of the chamber shell being spherical and the open side 22 of the chamber shell being flat. The first composition 31 is layered on the second composition 32 .

At the beginning of use, the surface S1 of the first composition 31 is first rinsed off with the rinsing water, as shown by the dashed arrow in FIG. 2a. The second composition 32, on the other hand, is not yet rinsed off.

After a plurality of rinses, the first composition 31 is completely rinsed off by the rinse water. As shown by the dashed arrow in FIG. 2b, the surface S2 of the second composition 32 is now rinsed off. The surface area S2 is smaller than the surface area S1 of the first composition due to the spherical geometry of the closed side of the chamber 20. The difference in size of the surfaces S1 and S2 is now illustrated again in FIG. 2c. Therefore, a smaller amount of the second composition 32 is released per rinse cycle than is the case when the first composition 31 is rinsed off was. This results in a different release profile for the first composition compared to the second composition 32.

The agents V1 to V6 according to the invention were produced. Each of the agents comprises the compositions Z1 and Z2, which are layered on top of one another as two separate phases in a chamber of a toilet basket, as has been described with reference to the figures. In addition, a comparison composition (not listed) was produced for each of the agents according to the invention and also used in a toilet basket, with these agents containing only the first composition Z1, ie not having a two-phase configuration.

Amounts are given in percent by weight based on the total amount of each composition:

In the second composition Z2, the agent V1 comprises a larger quantity of fragrance than in the first composition Z1. In the second composition Z2, the agent V2 comprises a larger amount of dye than in the first composition Z1. Due to the spherical geometry of the chamber, the surface area of the first composition at the beginning of the use of the toilet system is larger than the surface area of the second composition, which is only released after a plurality of flushing cycles. Therefore, a smaller amount of the second composition is released per flush than was the case when the first composition was flushed off when the toilet system was first used. By using a larger amount of dye and/or fragrance in the second composition, this different rinsing behavior can be compensated and a homogeneous release of the active substance can be brought about.

In the second composition Z2, the agents V3 and V4 comprise a larger amount of surfactant than in the first composition Z1. A smaller amount of the second composition is released per flush than was the case when the first composition was flushed off when the toilet system was first used. This different rinsing behavior can be compensated for by using a larger amount of surfactant in the second composition.

In the second composition Z2, the means V5 and V6 comprise different dyes/scents than in the first composition Z1. Only after the first composition has been flushed off at the beginning of the use of the toilet system is the second composition flushed off. The use of different dyes/scents can result in a change in color and/or scent, and can serve as an end-of-life indicator, for example. While such an end-of-life indication is achieved in solid toilet blocks (cleaning agent tablets) by a core-shell arrangement of the phases, the present system with gel-like agent differs significantly in that the gel-like phases are arranged in layers.

Claims

Patent Claims:

1. System comprising a toilet basket (10) with at least one chamber (20), wherein a solid gel-like sanitary agent is present in the chamber (20) of the toilet basket, characterized in that the solid gel-like sanitary agent has at least one first composition (31) and a second composition (32), wherein the sanitary agent is adhered to the chamber envelope; and the chamber envelope is fully closed on at least one side (24) and the agent adheres to the fully closed side (24) of the chamber envelope; and the first composition (31) differs from the second composition (32).

2. System according to claim 1, wherein the first composition (31) and/or the second composition (32) has at least one fragrance and/or dye.

The system of claim 1 or 2, wherein the first composition (31) is layered on the second composition (32).

4. System according to any one of the preceding claims, wherein the closed side (24) of the chamber shell is spherical.

5. System according to the preceding claim, wherein the chamber envelope has the shape of a hemisphere.

6. System according to either of the preceding claims, wherein the sanitary agent further comprises an anionic surfactant.

7. System according to the preceding claim, wherein the anionic surfactant is an ether sulphate, preferably a fatty acid ethyl ether sulphate and particularly preferably a lauryl ether sulphate.

8. System according to one of the two preceding claims, wherein the anionic surfactant in an amount of 1 wt .-% to 20 wt .-%, preferably in an amount of 2 wt .-% to 10 wt .-%, based on the Total amount of the first composition (31) and/or the second composition (32).

9. System according to any one of the preceding claims, wherein the non-ionic adhesion promoter is a fatty alcohol alkoxylate which preferably has a degree of alkoxylation of 20 to 50 EO, preferably 20 to 45.

10. System according to any one of the preceding claims, wherein agent has a further nonionic surfactant.

11. System according to the preceding claim, wherein the further nonionic surfactant is a fatty alcohol alkoxylate, preferably with a degree of alkoxylation of 5 to 15 EO.

12. System according to the preceding claim, wherein the fatty alcohol alkoxylate has a C9 to C12 alkyl radical, and wherein the alkyl radical is preferably an unbranched alkyl radical.

13. Preparation of a system according to the preceding claim, comprising the steps of rendering the second composition (32) flowable by heating;

placing the second composition (32) in the basket (20);

cooling and curing the second composition (32);

rendering the first composition (31) flowable by heating;

placing the first composition (31) in the basket;

cooling and curing the first composition (31).