Toilet block with improved gloss

Abstract

The present invention relates to a solid toilet rim block, the toilet rim block comprising a surfactant system and a polymer, wherein the surfactant system is present in an amount of less than 50% by weight in the total composition. The present invention also relates to a system comprising such a toilet rim block.

Description

[0001] The present invention relates to a WC cleaning block, to a system comprising such a WC cleaning block and to the use thereof.

[0002] In particular, spherical toilet rim blocks (also called toilet blocks) are becoming increasingly popular. It has been found that when the surfactant system is used in sufficiently large amounts, particularly in excess of 50% by weight of the total composition, an aesthetically pleasing gloss is retained on the surface of the toilet bowl.

[0003] However, from an economic and ecological point of view, it is desirable to reduce the total amount of surfactant in the composition. However, reducing the amount of the surfactant system results in a less attractive visual gloss on the toilet surface.

[0004] It is therefore an object of the present invention to provide an economical and ecological toilet rim block which leaves an attractive visual sheen on the toilet bowl surface.

[0005] According to one aspect of the present invention, a toilet rim block is described, the toilet rim block comprising a surfactant system and a polymer, wherein the surfactant system is present in an amount of less than 50% by weight of the total composition.

[0006] Therefore, an economical and ecological toilet rim block is provided, which leaves an attractive visual gloss on the toilet surface. In other words, gloss can be provided on the surface even when using even less amount of surfactant.

[0007] According to a preferred embodiment, a toilet rim block is described wherein the polymer is an acrylic polymer.

[0008] Since the polymer is an acrylic polymer, it can reliably leave a glossy finish on the surface of the toilet bowl.

[0009] According to a preferred embodiment, a toilet rim block is described, which has a substantially spherical geometry.

[0010] In particular, when the toilet rim piece has good flushing properties, uniform wetting of the surface of the toilet bowl is made possible. Due to the spherical geometry, the toilet rim piece can be flushed uniformly, wherein the polymer is applied to the surface of the toilet bowl.

[0011] According to a preferred embodiment, a toilet rim block is described wherein the surfactant system is present in an amount of less than 40% by weight of the total composition.

[0012] According to a preferred embodiment, a toilet rim block is described, wherein the composition comprises at least one anionic surfactant, the total amount of anionic surfactants being preferably less than 40% by weight.

[0013] According to a further preferred embodiment, a toilet rim block is described, wherein the composition comprises at least one alkylbenzene sulfonate as anionic surfactant, the total amount of anionic surfactant being less than 40 wt.-%, and the amount of alkylbenzene sulfonate being preferably less than 25 wt.-%.

[0014] According to a further preferred embodiment, a toilet rim block is described, wherein the composition comprises at least one olefin sulfonate as anionic surfactant, the total amount of anionic surfactant being less than 40 wt.-%, and the amount of olefin sulfonate being preferably less than 15 wt.-%.

[0015] According to a further preferred embodiment, a toilet rim block is described, wherein the composition comprises as anionic surfactants at least one olefin sulfonate and at least one alkylbenzene sulfonate, the total amount of anionic surfactants being less than 40% by weight, and the amount of alkylbenzene sulfonate is preferably less than 25% by weight, and the amount of olefin sulfonate is preferably less than 15% by weight.

[0016] According to a preferred embodiment, a toilet rim block is described, wherein the composition comprises a nonionic surfactant in an amount of less than 8% by weight.

[0017] According to a further preferred embodiment, a toilet rim block is described, wherein the composition comprises as anionic surfactants at least one olefin sulfonate and at least one alkylbenzene sulfonate, the total amount of anionic surfactants being less than 40 wt.-%, and the amount of alkylbenzene sulfonate is preferably less than 25 wt.-%, and the amount of olefin sulfonate is preferably less than 15 wt.-%, and wherein the composition comprises a nonionic surfactant in an amount of less than 8 wt.-%.

[0018] According to a further aspect, a system is described having a dispensing device and at least one toilet rim block according to any of the preceding claims.

[0019] According to a preferred embodiment, a system is described comprising a dispensing device and at least two, more preferably at least three and even more preferably at least four toilet rim blocks, and these at least two, more preferably at least three and even more preferably at least four toilet rim blocks are arranged in a row adjacent to each other.

[0020] In particular, a uniform and in particular complete wetting of the surface of the toilet bowl is made possible when the flushing water is applied to the largest possible part of the toilet bowl surface. This is made possible by the fact that at least two, more preferably at least three and even more preferably at least four toilet rim blocks are arranged adjacent to one another in a row. A row arrangement of a plurality of toilet rim blocks is particularly preferred, since this allows the creation of a wide "water front" which comprises the dissolved toilet rim block composition and can wet the largest possible part of the toilet bowl surface. It is particularly preferred if the toilet rim blocks also have a spherical geometry, since they also exhibit particularly good flushing properties.

[0021] According to other aspects, the use of a polymer for improving the gloss of a toilet rim piece is described.

[0022] In particular, the use of polymers for improving gloss is described, which polymers are acrylate polymers.

[0023] According to a further aspect, the use of improving gloss by a system is described, the system having a dispensing device and at least two, more preferably at least three and even more preferably at least four toilet rim blocks, and these at least two, more preferably at least three and even more preferably at least four toilet rim blocks are arranged in a row adjacent to each other.

[0024] A row arrangement of a plurality of toilet rim blocks is particularly preferred, since this allows the creation of a wide "water front" which comprises the dissolved toilet rim block composition and can wet the largest possible portion of the toilet bowl surface. It is particularly preferred if the toilet rim blocks also have a spherical geometry, since they also exhibit particularly good flushing properties. Therefore, the use of such a system to improve gloss is particularly preferred.

[0025] The WC cleaning block according to the invention is typically used in a dispensing device, such as a so-called WC basket.The invention therefore also relates to a system consisting of at least one WC cleaning block according to the invention and a dispensing device.

[0026] The WC cleaning block according to the invention can be prepared in a method comprising the steps of mixing the ingredients, extruding the mixture, cutting the extruded strip into partial blocks of defined mass, and shaping the blocks into rotationally symmetrical bodies.

[0027] Therefore, the present invention also relates to a method for producing a rotationally symmetrical WC cleaning block containing a fragrance, a nonionic surfactant, an alkylbenzene sulfonate and an olefin sulfonate, the method comprising the following steps:

[0028] a) mixing the ingredients;

[0029] b) extruding the mixture;

[0030] c) cutting the extruded strand into partial pieces of defined mass; and

[0031] d) Shaping the block into a rotationally symmetric body.

[0032] The system according to the invention consisting of a WC cleaning block and a dispensing device can additionally be used for cleaning and / or perfumery and / or disinfecting a toilet bowl in such a way that the dispensing device filled with the WC cleaning block is hooked into the WC bowl and when the toilet flushing device is activated, the dissolved components of the WC cleaning block enter the flushing water and can produce their cleaning and / or perfumery and / or disinfecting effect there. The invention also relates to a method for cleaning and / or perfumery and / or disinfecting a toilet bowl using a system consisting of a WC cleaning block according to the invention and a dispensing device.

[0033] Substances that are also used as ingredients of cosmetic agents are named as required in the following according to the International Cosmetic Ingredient Nomenclature (INCI). Chemical compounds have English INCI names, plant ingredients are listed only in Latin according to Linné, and so-called common names such as "water", "honey" or "sea salt" are also specified in Latin. INCI names can be found in the International Cosmetic Ingredient Dictionary and Handbook - Seventh Edition (1997) published by The Cosmetic, Toiletry, and Fragrance Association (CTFA), 1101 17th Street, NW, Suite 300, Washington DC 20036, USA, and contains more than 9,000 INCI names and references to more than 37,000 trade names and technical names, including relevant distributors from more than 31 countries. The International Cosmetic Ingredient Dictionary and Handbook classifies ingredients into one or more chemical classes (e.g. polymer ethers) and one or more functions (e.g. surfactants-cleansing agents), which are then explained in more detail and can also be referenced subsequently.

[0034] The expression CAS means that the following number sequence is the name of the Chemical Abstracts Service.

[0035] In the context of the present invention, unless otherwise indicated, fatty acids or fatty alcohols or their derivatives represent branched or unbranched carboxylic acids or alcohols or their derivatives preferably having 6 to 22 carbon atoms, in particular 8 to 20 carbon atoms, particularly preferably 10 to 18 carbon atoms, most preferably 12 to 16 carbon atoms (e.g. 12 to 14 carbon atoms). For ecological reasons, the former are particularly preferred due to their plant-based nature, based on sustainable raw materials, but are not limited thereto according to the teaching of the present invention. In particular, oxo alcohols and their derivatives can therefore be used, which can be obtained, for example, according to the oxo synthesis of Roelen and which preferably contain 7 to 19 carbon atoms, in particular 9 to 19 carbon atoms, particularly preferably 9 to 17 carbon atoms, most preferably 11 to 15 carbon atoms, for example 9 to 11, 12 to 15 or 13 to 15 carbon atoms.

[0036] spices

[0037] The agent contains one or more spices, preferably in an amount of 0.01 to 10% by weight, particularly 0.05 to 8% by weight, particularly preferably 0.1 to 5% by weight. D-limonene can be contained as a fragrance component. In a particularly preferred embodiment, the WC cleaning block according to the present invention contains a fragrance consisting of essential oils. For example, pine oil, citrus oil, jasmine oil, patchouli oil, rose oil or ylang-ylang oil can be used as the oil within the meaning of the present invention. Clary sage oil, chamomile oil, lavender oil, clove oil, melissa oil, peppermint oil, cinnamon leaf oil, linden flower oil, juniper berry oil, vetiver oil, frankincense oil, white pine oil and labdanum oil, as well as orange blossom oil, neroli oil, orange peel oil and sandalwood oil are also suitable.

[0038] If they are to be perceived, odorants must be volatile, where the molar mass (in addition to the nature of the functional groups and the structure of the chemical compound) also plays an important role. Therefore, most odorants have a molar mass of up to about 200 Daltons, while molar masses of 300 Daltons and above are somewhat exceptional. Due to the different volatility of the odorants, the smell of fragrances composed of several odorants changes during the evaporation process, and the odor impression is divided into "top note", "middle note or main note" and "base note or tail note".

[0039] Examples of adhering odorants that can be advantageously used in the perfume oils within the scope of the present invention are essential oils such as angelica root oil, fennel oil, arnica flower oil, basil oil, bay oil, chamomilla oil, European fir oil, European fir cone oil, elemi oil, eucalyptus oil, fennel oil, spruce needle oil, galbanum oil, geranium oil, ginger grass oil, guaiac wood oil, guar gum oil, helichrysum oil, camphor oil, ginger oil, iris oil, melaleuca oil, calamus oil, chamomile oil, camphor oil, ylang-ylang oil, cardamom oil, cinnamon oil, pine needle oil, copaiba oil, coriander oil, spearmint oil, caraway oil, cumin oil, lemongrass oil, ambrette oil, myrrh oil, clove oil, neroli oil, neroli oil, frankincense oil, oregano oil, palmarosa oil, patchouli oil, Peru balsam oil, petitgrain oil oil), pepper oil, peppermint oil, pimento oil, pine oil, rose oil, rosemary oil, sandalwood oil, celery oil, star anise oil, arborvitae oil, thyme oil, verbena oil, vetiver oil, juniper berry oil, wormwood oil, wintergreen oil, ylang-ylang oil, hyssop oil, cinnamon oil, cinnamon leaf oil, and tar oil.

[0040] However, within the scope of the present invention, high-boiling and solid odorants of natural or synthetic origin can also be used advantageously in the fragrance oils as adherent odorants or odorant mixtures. These compounds include the compounds shown below and their mixtures: musk lactone, α-amylcinnamaldehyde, anethole, anisaldehyde, anisol, anisole, methyl anthranilate, acetophenone, benzyl acetone, benzaldehyde, ethyl benzoate, benzophenone, benzyl alcohol, bornyl alcohol, bornyl acetate, α-bromostyrene, n-decanal, n-dodecanal, eugenol, eugenol methyl ether, eucalyptol, farnesol, fenchone, fenchyl acetate, geranyl acetate, geranyl formate, piperonal, heptynyl carboxylic acid methyl ester, heptaldehyde, hydroquinone dimethyl ether, hydroxycinnamaldehyde, hydroxycinnamyl alcohol, indole, irone, isoeugenol, isoeugenol methyl ether, isosafrole, jasmone, camphor, carvacrol, carvone, p-cresol methyl ether, Coumarin, p-methoxyacetophenone, methyl n-amyl ketone, methyl anthranilate, p-methylacetophenone, methyl chavicol, p-methylquinoline, methyl β-naphthyl ketone, methyl n-nonyl acetaldehyde, methyl n-nonyl ketone, musk ketone, β-naphthol ethyl ether, β-naphthol methyl ether, nerol, nitrobenzene, n-nonanal, nonanol, n-octanal, p-oxyacetophenone, pentadecalactone, β-phenylethanol, phenylacetaldehyde dimethyl acetal, phenylacetic acid, longifolia mint, safrole, isoamyl salicylate, methyl salicylate, hexyl salicylate, cyclohexyl salicylate, santalol, skatole, terpineol, thyme, thymol, γ-undecalactone, vanillin, veratraldehyde, cinnamaldehyde, cinnamyl alcohol, cinnamic acid, ethyl cinnamate and benzyl cinnamate.

[0041] More volatile odorants which can be advantageously used in the fragrance oils within the scope of the present invention include in particular low-boiling odorants of natural or synthetic origin which can be used alone or in mixtures. Examples of more volatile odorants are alkyl isothiocyanates (alkyl mustard oils), diacetyl, limonene, linalool, linayl acetate and linayl propionate, menthol, menthone, methyl-n-heptenone, phellandrene, phenylacetaldehyde, terpinyl acetate, citral and citronellal.

[0042] Surfactants

[0043] The WC cleaning block according to the present invention contains at least one nonionic surfactant and at least one alkylbenzene sulfonate and at least one olefin sulfonate. Other surfactants may also be contained.

[0044] Preferred alkylbenzenesulfonates are in particular those having about 12 C atoms in the alkyl part, such as sodium linear C10-13-alkylbenzenesulfonate. Preferred olefinsulfonates have a carbon chain length of 14 to 16. The WC cleaning block according to the invention preferably contains 10 to 70% by weight, more preferably 20 to 65% by weight, particularly preferably 20 to 30% by weight of alkylbenzenesulfonate, and preferably 10 to 30% by weight, more preferably 15 to 30% by weight, particularly preferably 15 to 25% by weight of olefinsulfonate.

[0045] Nonionic surfactants

[0046] The nonionic surfactants within the scope of the present invention may be alkoxylates, such as polyglycol ethers, fatty alcohol polyglycol ethers, alkylphenol polyglycol ethers, end-capped polyglycol ethers, mixed ethers and hydroxy mixed ethers and fatty acid polyglycol esters. It is also possible to use ethylene oxide-propylene oxide block polymers, fatty acid alkanolamides and fatty acid polyglycol ethers. Other important types of nonionic surfactants that can be used according to the invention are polyol surfactants, and here in particular glycol surfactants such as alkyl polyglycosides and fatty acid glucamides. Alkyl polyglycosides, in particular alkyl polyglucosides, in particular fatty alcohol alkoxylates (fatty alcohol polyglycol ethers) are particularly preferred.

[0047] Preferred fatty alcohol alkoxylates are ethylene oxide (EO)- and / or propylene oxide (PO)-alkoxylated, unbranched or branched, saturated or unsaturated C8-22 alcohols having a degree of alkoxylation of up to 30, preferably ethoxylated C12-22 fatty alcohols having a degree of ethoxylation of less than 30, in particular 12 to 28, preferably 20 to 28, particularly preferably 25, for example C16-18 fatty alcohol ethoxylates having 25 EOs.

[0048] Alkyl polyglycosides are surfactants obtainable by reacting sugars and alcohols according to relevant methods of preparative organic chemistry, the mixture being one of monoalkylated sugars, oligosaccharides or polysaccharides, depending on the type of preparation. Preferred alkyl polyglycosides are alkyl polyglucosides, the alcohol being particularly preferably a long-chain fatty alcohol or a mixture of a long-chain fatty alcohol with a branched or unbranched C8- to C18-alkyl chain, and the sugar having a degree of oligomerization (DP) between 1 and 10, in particular 1 to 6, preferably 1.1 to 3, most preferably 1.1 to 1.7, for example C8-10-alkyl-1.5-glucoside (DP is 1.5).

[0049] Fatty alcohol ethoxylates are preferably used in an amount of up to 20% by weight, particularly preferably 4 to 12% by weight, and more particularly preferably 7 to 9% by weight. In addition, other nonionic surfactants such as fatty acid monoalkanolamides and / or alkyl polyglycosides may be contained in an amount of up to 10% by weight.

[0050] Other anionic surfactants

[0051] Aliphatic sulfates such as fatty alcohol sulfates, fatty alcohol ether sulfates, dialkyl ether sulfates, monoglyceride sulfates and aliphatic sulfonates such as alkanesulfonates, ethersulfonates, n-alkyl ethersulfonates, estersulfonates and ligninsulfonates can be used as further anionic surfactants in the WC cleaning block according to the invention. Likewise, fatty acid cyanamides, sulfosuccinic acid esters or salts (sulfosuccinates), in particular mono- and di-C8-C18 alkyl sulfosuccinates, sulfosuccinamates, sulfosuccinamides, fatty acid isethionates, acylaminoalkanesulfonates (fatty acid aminoethanesulfonates), fatty acid sarcosinates, ether carboxylic acids and alkyl (ether) phosphates, as well as α-sulfofatty acid salts, acylglutamates, monoglyceride disulfates and alkyl ethers of glycerol disulfates can also be used within the scope of the present invention.

[0052] Fatty alcohol sulfates and / or fatty alcohol ether sulfates, in particular fatty alcohol sulfates, are preferred within the scope of the present invention. Fatty alcohol sulfates are products of the sulfation reaction of the corresponding alcohols, while fatty alcohol ether sulfates are products of the sulfation reaction of alkoxylated alcohols. Alkoxylated alcohols are generally understood by those skilled in the art to be reaction products of alkylene oxides, preferably ethylene oxide, with alcohols, preferably long-chain alcohols within the meaning of the present invention. Typically, depending on the reaction conditions, a complex mixture of addition products with different degrees of ethoxylation is produced from n moles of ethylene oxide and 1 mole of alcohol. Another embodiment of the alkoxylation consists in using a mixture of alkylene oxides, preferably a mixture of ethylene oxide and propylene oxide. Sulfates of low-ethoxylated fatty alcohols having 1 to 4 ethylene oxide units (EO), in particular 1 to 2 EO, for example 1.3 EO, are preferred fatty alcohol ether sulfates.

[0053] The anionic surfactants are preferably used in the form of sodium salts, but can also be contained in the form of other alkali metal salts or alkaline earth metal salts (for example magnesium salts), as well as in the form of ammonium salts or mono-, di-, tri- or tetraalkylammonium salts and, in the case of sulfonates, also in the form of their corresponding acids (for example dodecylbenzenesulfonic acid).

[0054] Besides the surfactant types mentioned so far, the agents according to the invention may additionally contain cationic and / or amphoteric surfactants.

[0055] Suitable amphoteric surfactants are, for example, of the formula (R <iii> )(R <iv> )(R <v>)N<+>CH2COO<-> betaine, where R <iii>represents an alkyl group, which is optionally interrupted by heteroatoms or heteroatom groups, having 8 to 25, preferably 10 to 21, carbon atoms, and R <iv>and R <v>represents identical or different alkyl groups having 1 to 3 carbon atoms, in particular C10-C18 alkyldimethylcarboxymethylbetaine and C11-C17 alkylamidopropyldimethylcarboxymethylbetaine.

[0056] Suitable cationic surfactants are especially those of the formula (R <vi> )(R <vii> )(R <viii> )(R <ix>)N<+>X<->quaternary ammonium compounds, wherein R <vi>To R <ix>are four identical or different, in particular two long-chain and two short-chain alkyl functional groups, and X<-> is an anion, in particular a halide ion, for example didecyldimethylammonium chloride, alkylbenzyldidecylammonium chloride and mixtures thereof.

[0057] Other Ingredients

[0058] In addition to the components mentioned so far, the WC cleaning block according to the invention may contain other ingredients usually used in WC cleaning blocks, preferably selected from acids, bases, salts, thickeners, antimicrobial active ingredients, preservatives, complexing agents, polymers, dyes, fragrances, fragrance enhancers, fillers, builders, bleaches, corrosion inhibitors, rinse conditioners, enzymes, microorganisms, active ingredients for inhibiting scale deposition, active ingredients for reducing dirt adhesion, active ingredients for improving processability, active ingredients for reducing adhesion and mixtures thereof. In general, no more than 60% by weight, preferably 0.01 to 60% by weight, in particular 0.2 to 15% by weight of other ingredients should be contained.

[0059] acid

[0060] The WC cleaning block according to the present invention may contain one or more acids and / or salts thereof to improve the cleaning performance against scale and urine scale. The acid is preferably prepared from renewable raw materials. Therefore, in particular, organic acids such as formic acid, acetic acid, citric acid, glycolic acid, lactic acid, succinic acid, adipic acid, malic acid, tartaric acid and gluconic acid, and mixtures thereof, are suitable as acids. However, in addition, inorganic hydrochloric acid, sulfuric acid, phosphoric acid and nitric acid, or also sulfamic acid or mixtures thereof may also be used. Acids and / or salts thereof selected from citric acid, lactic acid, formic acid, their salts and mixtures thereof are particularly preferred. The acid and / or salt are used in an amount of 0.01 to 10% by weight, particularly preferably 0.2 to 5% by weight.

[0061] In a preferred embodiment, the reagent additionally contains an inorganic salt, preferably an alkali metal salt or an alkaline earth metal salt, in particular a carbonate, sulfate, halide or phosphate, and mixtures thereof. Particularly preferably sodium sulfate and / or sodium carbonate are used. Sodium sulfate can be contained in an amount of up to 60% by weight, preferably 0.01 to 60% by weight, particularly preferably 20 to 60% by weight, in particular 35 to 55% by weight. Sodium carbonate and other salts can be contained in an amount of up to 30% by weight, preferably up to 10% by weight, particularly preferably up to 5% by weight.

[0062] Alkali

[0063] Additional bases may be present in the reagent according to the invention. Bases selected from the group consisting of alkali metal and alkaline earth metal hydroxides and carbonates, in particular sodium carbonate or sodium hydroxide, are preferably used as bases in the reagent according to the invention. In addition, however, ammonia and / or alkanolamines, preferably ethanolamine, in particular monoethanolamine, having up to 9 carbon atoms in the molecule may also be used.

[0064] Antimicrobial active ingredients

[0065] Disinfection and sanitation are specific forms of cleaning. In the corresponding specific embodiments of the present invention, the WC cleaning block therefore contains one or more antimicrobial active ingredients, preferably in an amount of 0.01 to 1% by weight, more preferably 0.02 to 0.8% by weight, particularly 0.05 to 0.5% by weight, particularly preferably 0.1 to 0.3% by weight, and most preferably 0.2% by weight. The terms "disinfection", "sanitation", "antimicrobial action" and "antimicrobial active ingredient" have their conventional meanings within the scope of the teachings of the present invention. Although in a narrow sense of medical practice, disinfection means killing - theoretically all - infectious microorganisms, sanitation should be understood as eliminating all microorganisms as much as possible, including saprophytic microorganisms that are usually harmless to humans. In this case, the degree of disinfection or sanitation depends on the antimicrobial action of the reagent used, and its effect decreases as the content of the antimicrobial active ingredient decreases or the reagent to be used becomes increasingly dilute.

[0066] For example, antimicrobial active ingredients selected from the group consisting of alcohols, aldehydes, antimicrobial acids and salts thereof, carboxylates, amides, phenol, phenol derivatives, biphenyl, diphenylalkanes, urea derivatives, oxygen and nitrogen acetals and methylals, benzamidine, isothiazoles and derivatives thereof (such as isothiazolins and isothiazolinones), 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, iodophors, active chlorine-releasing compounds and peroxides are suitable according to the invention. Preferred antimicrobial active ingredients are preferably selected from the group comprising ethanol, n-propanol, isopropanol, 1,3-butylene glycol, phenoxyethanol, 1,2-propylene glycol, glycerol, undecylenic acid, citric acid, lactic acid, benzoic acid, salicylic acid, thymol, 2-benzyl-4-chlorophenol, 2,2'-methylenebis-(6-bromo-4-chlorophenol), 2,4,4'-trichloro-2'-hydroxydiphenyl ether, N-(4-chlorophenyl)-N'-(3,4-dichlorophenyl)- The present invention also provides the following antimicrobial active ingredients: 1,2-dichloro-5H-1,3,5-triazine-2,4,6-trione sodium salt, 1,3 ...

[0067] preservative

[0068] The WC cleaning block according to the invention may also contain a preservative. The substances mentioned under antimicrobial active ingredients can essentially be used as such a preservative.

[0069] Complexing agent

[0070] Complexing agents (INCI chelates), also called sequestering agents, are ingredients that complex and inactivate metal ions to prevent said ions from adversely affecting the stability or appearance of the reagent (e.g. turbidity). It is important to complex the calcium and magnesium ions of water hardness, which are incompatible with many ingredients. However, complexing ions of heavy metals such as iron or copper delays the oxidative decomposition of the finished reagent. In addition, complexing agents contribute to the cleaning action.

[0071] For example, the following complexing agents according to the INCI nomenclature are suitable: aminotrimethylenephosphonic acid, beta-alanine diacetic acid, calcium disodium EDTA, citric acid, cyclodextrin, cyclohexanediaminetetraacetic acid, diammonium citrate, diammonium EDTA, diethylenetriaminepentamethylenephosphonic acid, dipotassium EDTA, disodium azacycloheptane diphosphonate, disodium EDTA, disodium pyrophosphate, EDTA, etidronic acid, galactaric acid, gluconic acid, glucuronic acid, HEDTA, hydroxypropyl cyclodextrin, methyl cyclodextrin, pentapotassium triphosphate, pentasodium aminotrimethylenephosphonate, pentasodium ethylenediaminetetramethylenephosphonate, pentasodium pentetate, pentasodium triphosphate, pentetic acid, phytic acid, potassium citrate, potassium EDTMP, potassium gluconate, polyphosphoric acid Potassium triphosphate, potassium triphosphonate methylamine oxide, ribonic acid, sodium chitosan methylene phosphonate, sodium citrate, sodium diethylenetriamine pentamethylene phosphonate, sodium dihydroxyethylglycinate, sodium EDTMP, sodium glucoheptonic acid, sodium gluconate, sodium glyceryl polyether-1 polyphosphate, sodium hexametaphosphate, sodium metaphosphate, sodium metasilicate, sodium phytate, sodium polydimethylglycine phenol sulfonate, sodium trimetaphosphate, TEA-EDTA, TEA polyphosphate, tetrahydroxyethylethylenediamine, tetrahydroxypropylethylenediamine, tetrapotassium etidronic acid, tetrapotassium pyrophosphate, tetrasodium EDTA, tetrasodium etidronic acid, tetrasodium pyrophosphate, tripotassium EDTA, trisodium dicarboxymethylalanine, trisodium EDTA, trisodium HEDTA, trisodium NTA and trisodium phosphate.

[0072] polymer

[0073] The WC cleaning block according to the invention may additionally contain a polymer, which may, for example, reduce the tendency to calcification and re-contamination.

[0074] Acrylic polymers, such as those commercially available from Rhodia Corporation under the trade name Mirapol, are preferred polymers.

[0075] Fragrances and dyes

[0076] The WC cleaning block according to the invention may contain one or more fragrances and / or one or more dyes (INCI colorants) as further ingredients. Both water-soluble and oil-soluble dyes may be used as dyes, it being important to consider compatibility with other ingredients (e.g. bleach) and that the dyes used should not significantly affect the WC ceramic, even after prolonged use. The dye is preferably contained in an amount of 0.0001 to 0.1% by weight, in particular 0.0005 to 0.05% by weight, particularly preferably 0.001 to 0.01% by weight.

[0077] Detergent

[0078] Water-soluble and / or water-insoluble builders may optionally be used in the WC cleaning block according to the invention. Water-soluble builders are preferred because they are generally less likely to form insoluble residues on hard surfaces. Conventional builders that may be added within the scope of the invention are low molecular weight polycarboxylic acids and their salts, homo- and copolymeric polycarboxylic acids and their salts, citric acid and its salts, carbonates, phosphates and silicates. Types of water-insoluble builders include zeolites, which may also be used, and mixtures of the above builders.

[0079] Bleach

[0080] According to the invention, a bleaching agent can be added to the cleaning agent. Suitable bleaching agents include peroxides, peroxyacids and / or perborates, with hydrogen peroxide being particularly preferred. In contrast, sodium hypochlorite is less suitable for cleaning agents with acidic formulations because of the release of toxic chlorine vapors, but can be used for cleaning agents adjusted to alkaline. In some cases, a bleach activator may be required in addition to the bleaching agent.

[0081] Corrosion Inhibitors

[0082] Suitable corrosion inhibitors (INCI corrosion inhibitors) are, for example, the following substances according to the INCI nomenclature: cyclohexylamine, diammonium hydrogen phosphate, dilithium oxalate, dimethylaminomethylpropanol, dipotassium oxalate, dipotassium hydrogen phosphate, disodium hydrogen phosphate, disodium pyrophosphate, disodium tetrapropylene succinate, hexyldiethylammonium, phosphates, nitromethane, potassium silicate, sodium aluminate, sodium hexametaphosphate, sodium metasilicate, sodium molybdate, sodium nitrite, sodium oxalate, sodium silicate, stearamidopropyl dimethicone, tetrapotassium pyrophosphate, tetrasodium pyrophosphate and triisopropanolamine.

[0083] Rinse Conditioner

[0084] Substances known as flushing regulators are primarily used to control the consumption of the agent during use so that the expected service life is met. Solid long-chain fatty acids such as stearic acid, and salts of these fatty acids, fatty acid ethanolamides such as coconut fatty acid monoethanolamide, or solid polyethylene glycols, such as those with a molecular weight between 10,000 and 50,000, are preferably suitable as regulators.

[0085] Active ingredients for reducing viscosity

[0086] In order to improve the processability when preparing the WC cleaning block according to the present invention, active ingredients can be used to reduce adhesion. For example, dolomite powder or titanium dioxide powder with a fine particle size distribution is added to improve the processability of the spherical form and significantly reduce wear and adhesion.

[0087] The results obtained using this active ingredient are better than using other conventional measures, such as coating the spheres with a lubricant, or powdering or coating the forming rollers with Teflon.

[0088] Enzymes

[0089] The reagent can also contain enzymes, preferably proteases, lipases, amylases, hydrolases and / or cellulases. They can be added to the reagent according to the present invention in any form established according to the prior art. These include solutions of enzymes, advantageously concentrated as much as possible, low in water and / or mixed with stabilizers. Alternatively, the enzyme can also be encapsulated, for example by spray drying or extruding the enzyme solution together with preferred natural polymers, or in the form of capsules, for example those wherein the enzyme is encapsulated in a solidified gel, or in the form of core-shell type, wherein the enzyme-containing core is coated with a protective layer impermeable to water, air and / or chemical substances. Other active ingredients such as stabilizers, emulsifiers, pigments, bleaching agents or dyes can be additionally applied to the covering layer. This capsule is applied using methods known per se, for example by vibration or roller granulation or in a fluidized bed process. Advantageously, for example, due to the application of a polymer film former, the dust content of this granule is low, and storage-stable due to the coating. In addition, enzyme stabilizers can be present in the enzyme-containing reagent to protect the enzyme contained in the reagent according to the present invention from destruction, for example, inactivation, denaturation or decomposition, for example caused by physical influences, oxidation or proteolytic cleavage. Suitable enzyme stabilizers, depending on the enzyme used in each case, are in particular: benzamidine hydrochloride, borax, boric acid, boronic acid or their salts or esters, in particular derivatives with aromatic groups, such as substituted phenylboronic acid or their salts or esters; peptide aldehydes (oligopeptides with reduced C-terminus), amino alcohols (such as mono-, di-, triethanolamine and mono-, di- and tripropanolamine and mixtures thereof), aliphatic carboxylic acids up to C12 (such as succinic acid, other dicarboxylic acids or salts of the acids mentioned); blocked fatty acid amide alkoxylates; lower aliphatic alcohols, in particular polyols, for example glycerol, ethylene glycol, propylene glycol or sorbitol; and reducing agents and antioxidants, such as sodium sulfite and reducing sugars. Other suitable stabilizers are known in the prior art. Preferably, a combination of stabilizers is used, for example a combination of polyols, boric acid and / or borax, a combination of boric acid or borates, a reducing salt and succinic acid or other dicarboxylic acids, or a combination of boric acid or borates with polyols or polyamino compounds and with reducing salts.

[0090] Multi-layer WC cleaning block

[0091] It is known from the prior art, for example from EP 791047 B1, to prepare WC cleaning blocks from substances of different compositions, wherein one of the substances is completely or partially surrounded by one or more other substances. For example, the inner substance can have a higher fragrance concentration than the outer substance to ensure that a constant fragrance impression is maintained as the spherical substance decreases during use, or the inner substance contains a different fragrance than the outer substance. In addition, different active ingredients can also be incorporated into different layers and released at different times depending on the degree of flushing. In the WC cleaning block according to the invention, such a layered structure is also possible.

[0092] The almost perfectly spherical shape of the WC cleaning block enables uniform rinsing of the WC cleaning block, so that the WC cleaning block substantially retains its spherical shape even during and / or after a rinsing process and a corresponding wear of the WC cleaning block. It has been shown that a high sphericity ψ of the WC cleaning block, in particular at the beginning of a rinsing water application, is essential for maintaining the spherical shape during and after a rinsing process.

[0093] The diameter of the spherical toilet rim piece is preferably between 1 mm and 10 cm, preferably between 5 mm and 5 cm, particularly preferably between 1 cm and 3 cm.

[0094] The WC cleaning block is inserted into a dispensing device which is fixed to the edge of the WC bowl by means of a bracket. For this purpose, a basket with a flush water dispensing element, as already described in the prior art (e.g. in DE 102008037723), and which can accommodate one or more WC cleaning blocks is suitable. The WC cleaning block and the dispensing device according to the invention together form a system. Thus, the system can be used in a method for cleaning and / or perfuming and / or disinfecting a toilet bowl in such a way that the dispensing device filled with the WC cleaning block is hooked into the WC bowl and when the toilet flushing device is activated, the dissolved components of the WC cleaning block enter the flushing water and produce their cleaning and / or perfuming and / or disinfecting effect there.

[0095] In a preferred embodiment, the WC basket according to the invention is provided with a child safety lock to prevent improper use of the spherical WC cleaning block according to the invention.

[0096] The WC cleaning block according to the invention is produced in a method comprising the following steps:

[0097] a) mixing the ingredients;

[0098] b) extruding the mixture;

[0099] c) cutting the extruded strand into partial pieces of defined mass; and

[0100] d) shaping the block into a rotationally symmetrical body. Shaping d) is preferably carried out in a spherical roller or press. Other suitable shaping processes are casting and calendering. Steps a) and b) can also be combined, i.e. the components are mixed in an extruder. The process steps are optionally carried out at different temperatures, and therefore heating or cooling steps can be inserted between the steps. This is at the discretion of the skilled person.

[0101] In a preferred embodiment, after one of steps b) or c), a further process step is carried out in which the extruded strip is provided with a lubricant. For this purpose, a sponge in the form of a wheel which is permanently filled with lubricant is guided over the extruded strip so that the lubricant is applied to all or part of the surface, preferably to between 10% and 40% thereof. In this case, the addition of the lubricant improves the subsequent spheroid formation. Suitable lubricants are substances which are used, for example, as surfactants or flushing regulators in particular in the formulations according to the invention. Particular preference is given to using lubricants selected from dipropylene glycol, paraffin, nonionic surfactants, polyethylene glycols and mixtures thereof, in particular dipropylene glycol.

[0102] It is particularly preferred if the WC cleaning block has a spherical form with a sphericity ψ of between 0.8 and 1, particularly preferably between 0.85 and 1, very particularly preferably between 0.9 and 1. Example

[0103] A WC cleaning block according to the invention with formulation E1 was prepared. In addition, other formulations C1 and C2 not according to the invention were prepared. In all compositions, attempts were made to extrude the mixture, cut blocks of defined mass from the extruded strip, and then form the blocks into spheres using a roller press.

[0104] The compositions E1, C1 and C2 can be found in the table below. All quantities are expressed in % by weight:

[0105] Components: C1 C2 E1 Alkylbenzenesulfonic acid sodium salt 26.00 22.10 22.10 Sodium Olefin Sulfonate C14-16 18.00 11.40 11.40 Fatty alcohol ethoxylate C16-18 25EO 8.00 6.00 6.00 Trisodium citrate dihydrate 1.00 0.80 0.80 dye <1 <1 <1 Spice Out of The Blue 2017 <1 <1 <1 Mirapol Surf S 600 - - 0.1 Dipropylene glycol 0 0.3 0.3 Filler (sodium sulfate) The remainder The remainder The remainder Glossiness + - + Surfactant content - - +

[0106] Only the compositions according to the invention are able to provide good gloss and at the same time have a low total surfactant content.< / ix> < / vi> < / ix> < / viii> < / vii> < / vi> < / v> < / iv> < / iii> < / v> < / iv> < / iii>

Claims

1. A solid toilet rim block, wherein the toilet rim block comprises a surfactant system and a polymer, wherein the surfactant system is present in the total composition in an amount of less than 40 wt. %, wherein the composition comprises less than 15 wt. % of at least one olefin sulfonate and less than 25 wt. % of at least one alkylbenzene sulfonate as anionic surfactant, wherein the composition comprises less than 8 wt. % of at least one fatty alcohol ethoxylate as nonionic surfactant, wherein the polymer is an acrylic polymer, and wherein the polymer is present in an amount of 0.01 to 15 wt. %.

2. The solid toilet rim block of claim 1, wherein the toilet rim block has a substantially spherical geometry.

3. A system comprising a dispensing device and at least one toilet rim block according to claim 1 or 2.

4. The system according to claim 3, comprising a dispensing device and comprising at least two toilet rim blocks, and these at least two toilet rim blocks are arranged adjacent to each other in a row.

5. The system according to claim 4, comprising a dispensing device and comprising at least three toilet rim blocks, and these at least three toilet rim blocks are arranged adjacent to each other in a row.

6. The system according to claim 5, comprising a dispensing device and comprising at least four toilet rim blocks, and these at least four toilet rim blocks are arranged adjacent to each other in a row.

7. Use of the toilet edge block according to claim 1 or 2 for improving the glossiness of the surface of a toilet bowl.