Low-water-content, liquid detergent comprising surfactants obtained from renewable raw materials

Abstract

The application relates to water-soluble packaging containing a liquid detergent or cleaning agent and a water-soluble wrapper. Said liquid detergent or cleaning agent contains a) nonionic surfactant selected from the group consisting of ethoxylated fatty alcohols, alkyl polyglycosides, ethoxylated methyl esters of natural fatty acids, and mixtures thereof, b) anionic surfactant selected from the group consisting of fatty alcohol sulfates, fatty alcohol ether sulfates, fatty alcohol soaps, sulfonated estolides, and mixtures thereof, c) organic solvent comprising a mixture of 1,2-propanediol and ethanol, and d) a maximum of 15 wt.% water relative to the entire detergent or cleaning agent.

Description

[0001] The invention relates to a water-soluble packaging comprising a water-soluble wrapping and a liquid washing or cleaning agent with anionic and non-ionic surfactants.

[0002] Commercially available detergents and cleaning agents usually contain combinations of several surfactants to meet the product's washing and cleaning performance requirements. These surfactants are typically derived from renewable raw materials, such as ethoxylated fatty alcohols, fatty alcohol sulfates, fatty alcohol ether sulfates, or alkyl polyglycosides, as well as petrochemically derived surfactants, such as alkylbenzenesulfonates in particular. However, with increasing environmental awareness among industry and consumers, it is desirable to formulate a detergent or cleaning agent that is as climate-neutral as possible, which can be achieved by using surfactants derived from renewable raw materials.

[0003] Today, detergents and cleaning products are available to consumers in a wide variety of forms. In addition to powders and granules, this range also includes liquids, gels, and portion packs (tablets or filled sachets).

[0004] In particular, portion packs of liquid detergents or cleaning agents are becoming increasingly popular. On the one hand, they meet consumers' desire for simplified dosing and, on the other hand, more and more consumers prefer liquid detergents or cleaning agents.

[0005] When formulating liquid detergents or cleaning agents for packaging in water-soluble sachets, particular care must be taken to ensure that the ingredients of the detergent or cleaning agent do not dissolve or partially dissolve the water-soluble coating of the sachet before use, thus leading to undesirable leakage.

[0006] One ingredient that can destroy the structural integrity of a sachet's water-soluble coating is water. For this reason, liquid detergents or cleaning agents packaged in water-soluble sachets contain as little water as possible. EP0656416 A1 discloses surfactant concentrates as base surfactants for concentrated liquid formulations.

[0007] WO2013 / 135512 A1 discloses a dusted water-soluble package containing an agent and a water-soluble wrapper.

[0008] From WO 2002 / 057398 A1, for example, a water-soluble container containing a liquid detergent composition comprising: a) an alkylbenzenesulfonic acid neutralized with an alkanolamine, b) an organic solvent and c) less than 3 wt% water is known.

[0009] Alkylbenzenesulfonates are preferred in low-water liquid detergents and cleaning agents not only because of their good washing and cleaning performance, but also because they can be used in highly concentrated, i.e., low-water form. This means that when alkylbenzenesulfonates are used as anionic surfactants, little water enters the liquid detergents and cleaning agents. Other anionic surfactants, such as fatty alcohol ether sulfates derived from renewable resources, already contain high amounts (> 25%) of water in the raw material.

[0010] There is therefore a need to provide washing or cleaning agents packaged in water-soluble packaging that contain exclusively surfactants obtained from renewable raw materials.

[0011] Accordingly, it was an object of the present invention to provide stable washing or cleaning agents packaged in water-soluble casings which contain exclusively surfactants obtained from renewable raw materials.

[0012] The invention relates to a water-soluble package according to claim 1, which contains a liquid washing or cleaning agent and a water-soluble wrapping.

[0013] Surprisingly, it has been shown that, with the help of the selected surfactant system and the selected solvent system, a stable, water-soluble package containing a liquid detergent or cleaning agent, comprising exclusively surfactants derived from renewable raw materials, can be obtained. Other solvent systems lead to sedimentation and / or syneresis.

[0014] Preferably, the ionic strength Ic of the detergent or cleaning agent is less than 250 mmol / l. It has been shown that such an ionic strength prevents ingredients, especially surfactants, of the liquid detergent or cleaning agent from being salted out and deposited on the inner surface of the water-soluble coating.

[0015] The washing or cleaning agent has particularly high cleaning performance and good foaming properties if the anionic surfactant is a mixture of fatty alcohol ether sulfate and fatty acid soap.

[0016] It is further preferred that the amount of fatty alcohol ether sulfate in the liquid washing or cleaning agent is at least 5% by weight.

[0017] Furthermore, it is preferred that the washing or cleaning agent has a water activity aw ≥ 0.38.

[0018] In a preferred embodiment of the invention, the amount of aerobically non-biodegradable organic ingredients (aNBO) in the washing or cleaning agent is less than 0.55 g per kg of laundry load.

[0019] In a further embodiment of the invention, the amount of anaerobically non-biodegradable organic ingredients (anNBO) in the washing or cleaning agent is less than 0.70 g per kg of wash load.

[0020] It is preferred that the water-soluble coating contains polyvinyl alcohol or a polyvinyl alcohol copolymer. Water-soluble coatings containing polyvinyl alcohol or a polyvinyl alcohol copolymer exhibit good stability with sufficiently high water solubility, particularly cold water solubility.

[0021] In the following, the invention will be explained in more detail, including by means of examples.

[0022] The application relates to a water-soluble package containing a liquid washing or cleaning agent and a water-soluble wrapper.

[0023] The water-soluble packaging contains a water-soluble wrapper which forms a closed structure having one or more chambers inside it for accommodating one or more washing or cleaning agents.

[0024] The water-soluble packaging can be dimensionally stable or deformable.

[0025] The water-soluble packaging can be designed as a dimensionally stable container, for example in the form of a capsule, box, can or container.

[0026] However, it is also generally possible and preferred to form the water-soluble packaging as a non-rigid container, such as a bag. The shape of such a water-soluble packaging can be largely adapted to the intended use. Various shapes, such as tubes, pillows, cylinders, bottles, or discs, are possible.

[0027] The water-soluble packaging contains a liquid detergent or cleaning agent. The liquid detergent or cleaning agent preferably contains only surfactants derived from renewable raw materials.

[0028] The liquid washing or cleaning agent contains non-ionic surfactant selected from the group consisting of alkoxylated fatty alcohols, alkyl polyglycosides, ethoxylated methyl esters of natural fatty acids and mixtures thereof.

[0029] Alkoxylated fatty alcohols used are preferably ethoxylated, especially primary alcohols, preferably with 8 to 18 C atoms and an average of 4 to 12 moles of ethylene oxide (EO) per mole of alcohol, in which the alcohol radical is linear. Alcohol ethoxylates with 12 to 18 C atoms, for example from coconut, palm, tallow, or oleyl alcohol, and an average of 5 to 8 EO per mole of alcohol are particularly preferred. Preferred ethoxylated alcohols include, for example, C 12-14 alcohols with 4 EO or 7 EO, C 9-11 alcohol with 7 EO, C 12-18 alcohols with 5 EO or 7 EO, and mixtures thereof. The stated degrees of ethoxylation represent statistical averages, which for a specific product can be a whole or fractional number. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE).In addition to these alkoxylated fatty alcohols, or alternatively, fatty alcohols with more than 12 EO can also be used. Examples of these are tallow fatty alcohol with 14 EO, 25 EO, 30 EO, or 40 EO. Alkoxylated fatty alcohols that contain both EO and PO groups in the molecule can also be used according to the invention.

[0030] In addition, alkyl glycosides of the general formula RO(G) x can be used as nonionic surfactants, in which R represents a primary straight-chain or methyl-branched, particularly 2-methyl-branched, aliphatic radical having 8 to 22, preferably 12 to 18, carbon atoms, and G represents a glycose unit having 5 or 6 carbon atoms, preferably glucose. The degree of oligomerization x, which indicates the distribution of monoglycosides and oligoglycosides, is any number between 1 and 10; preferably, x is between 1.2 and 1.4.

[0031] Other suitable non-ionic surfactants are ethoxylated methyl esters of natural fatty acids, such as coconut, palm kernel or olive oil fatty acids, preferably with 8 to 18 EO units.

[0032] Preferably, the liquid washing or cleaning agent contains exclusively alkoxylated fatty alcohols as non-ionic surfactants.

[0033] The total amount of non-ionic surfactant in the liquid washing or cleaning agent is up to 45% by weight, preferably 15 to 40% by weight and particularly preferably 20 to 30% by weight, based on the total liquid washing or cleaning agent.

[0034] The liquid washing or cleaning agent also contains an anionic surfactant. Fatty alcohol sulfates, fatty alcohol ether sulfates, fatty acid soaps, sulfonated estolides, and mixtures thereof are described. According to the invention, the anionic surfactant is a mixture of fatty alcohol ether sulfates and fatty acid soaps and is free from other anionic surfactants.

[0035] Preferred fatty alcohol sulfates are the salts of the sulfuric acid monoesters of C 12 -C 18 fatty alcohols, for example, coconut fatty alcohol, tallow fatty alcohol, lauryl, myristyl, cetyl, or stearyl alcohol. For washing purposes, C 12 -C 16 alkyl sulfates and C 12 -C 15 alkyl sulfates, as well as C 14 -C 15 alkyl sulfates, are preferred.

[0036] Fatty alcohol ether sulfates used include, for example, the sulfuric acid monoesters of straight-chain or branched C 7-21 alcohols ethoxylated with 1 to 6 mol of ethylene oxide, such as 2-methyl-branched C 9-11 alcohols with an average of 3.5 mol of ethylene oxide (EO) or C 12-18 fatty alcohols with 1 to 4 EO.

[0037] Other suitable anionic surfactants are fatty acid soaps. Saturated and unsaturated fatty acid soaps, such as the salts of lauric acid, myristic acid, palmitic acid, stearic acid, (hydrogenated) erucic acid, and behenic acid, are suitable, as are soap mixtures derived from natural fatty acids, for example, coconut, palm kernel, olive oil, or tallow fatty acids.

[0038] The anionic surfactants, including fatty acid soaps, can be in the form of their sodium, potassium, or ammonium salts. The anionic surfactants are preferably in the form of their sodium or ammonium salts. The ammonium salts can be the salts of organic bases. The amine used for neutralization is preferably choline, triethylamine, monoethanolamine, diethanolamine, triethanolamine, methylethylamine, or a mixture thereof, with monoethanolamine being preferred.

[0039] Suitable sulfonated estolides include compounds of the following formula where n is an integer from 1 to 30, one of X or Y is SO 3 -Z and the other is hydrogen, where X and Y are present in each repeating unit, A 1< and A 2< are linear or branched, saturated or unsaturated, substituted or unsubstituted C 8 -C 22 alkylene units, a in each repeating unit is independently 0, 1, or 2, R is a linear or branched, saturated or unsaturated, substituted or unsubstituted C 1 -C 24 alkyl unit, W is a monovalent or divalent metal cation, an ammonium cation, a substituted ammonium cation, hydrogen, an alkyl group or a substituted alkyl group and Z is hydrogen, a monovalent or divalent metal cation, an ammonium cation or substituted ammonium cation.

[0040] In a particularly preferred embodiment, the liquid washing or cleaning agent contains the sodium salt of a fatty alcohol ether sulfate and a fatty acid neutralized with monoethanolamine. It is also preferred that the amount of fatty alcohol ether sulfate in the total liquid washing or cleaning agent be at least 5% by weight.

[0041] The total amount of anionic surfactant in the liquid washing or cleaning agent is up to 35 wt.% and preferably 15 to 30 wt.%, based on the total liquid washing or cleaning agent.

[0042] The total amount of non-ionic and anionic surfactant in the liquid washing or cleaning agent is up to 75% by weight and preferably 50 to 60% by weight, based on the total liquid washing or cleaning agent.

[0043] The liquid washing or cleaning agent also contains organic solvent, which comprises a mixture of 1,2-propanediol and ethanol.

[0044] The amount of ethanol is between 1 and 5 wt.% and preferably between 1 and 3 wt.%, in each case based on the total washing or cleaning agent.

[0045] The amount of 1,2-propanediol is up to 50% by weight, preferably between 10 and 40% by weight, and most preferably between 20 and 35% by weight, in each case based on the total washing or cleaning agent.

[0046] In particular, it has been shown that liquid detergents or cleaning agents containing other organic solvent systems, for example a mixture of 1,2-propanediol and isopropanol, are unstable.

[0047] Therefore, the liquid washing or cleaning agent is free of isopropanol and, in a particularly preferred embodiment, free of other organic solvents. Accordingly, a particularly preferred liquid washing or cleaning agent contains an organic solvent that is a mixture of 1,2-propanediol and ethanol.

[0048] The liquid washing or cleaning agent contains water, with the water content being less than 15% by weight and more preferably less than 13% by weight, based in each case on the total liquid washing or cleaning agent. The total liquid washing or cleaning agent particularly preferably contains 7 to 12% by weight of water.

[0049] The liquid detergent or cleaning agent preferably has a water activity aw of more than 0.38, and more preferably more than 0.42. The water activity is determined at 25 °C using an "AquaLab Lite" device from IUL Instruments GmbH.

[0050] The water activity aw is a measure of the freely available water in a material and indicates the availability of water for chemical, biochemical, and microbial reactions. The water activity is expressed as the aw value and is defined as the quotient of the water concentration in the vapor phase in the air space above the material and the water concentration in the air space above pure water at a given temperature: a w = p p 0

[0051] In addition to the non-ionic surfactant, the anionic surfactant and the organic solvent, the washing or cleaning agent may contain other ingredients that further improve the performance and / or aesthetic properties of the washing or cleaning agent, but do not destroy the structural integrity of the water-soluble coating.In the context of the present invention, the washing or cleaning agent preferably additionally contains one or more substances from the group of builders, bleaching agents, enzymes, pH adjusters, perfumes, perfume carriers, fluorescent agents, dyes, hydrotopes, foam inhibitors, silicone oils, anti-redeposition agents, graying inhibitors, shrinkage inhibitors, crease inhibitors, color transfer inhibitors, antimicrobial active ingredients, non-aqueous solvents, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, antistatic agents, bittering agents, ironing aids, repellents and impregnating agents, skin-care active ingredients, swelling and slip-resistant agents, softening components and UV absorbers.

[0052] The liquid detergent or cleaning agent preferably has an ionic strength Ic of less than 250 mmol / l, more preferably less than 200 mmol / l, and most preferably less than 150 mmol / l. The ionic strength I of a solution is a measure of the electric field strength due to dissolved ions. The ionic strength I can be defined by both the molarity c and the molality b of the dissolved ions as follows: I c = 1 2 ⋅ ∑ i c i ⋅ z i 2 I b = 1 2 ⋅ ∑ i b i ⋅ z i 2 with ci = molarity of ion type i (in mol / l) bi = molality of ion type i (in mol / kg) zi = charge number of ion type i I c or I b : ionic strength of the solution related to the molarity or molality

[0053] It has been shown that an increase in the ionic strength I c to 250 mol / l and more, for example by adding inorganic salts to bind free water, can lead to salting out of ingredients of the washing or cleaning agent and / or to deposits on the water-soluble coating.

[0054] For this reason, it may be preferred that the liquid washing or cleaning agent is free from added inorganic salts.

[0055] It is further preferred that the amount of aerobically non-biodegradable organic ingredients (aNBO) in the washing or cleaning agent is less than 0.55 g per kg of wash load.

[0056] It is also preferred that the amount of anaerobically non-biodegradable organic ingredients (anNBO) in the washing or cleaning agent is less than 0.70 g per kg of wash load.

[0057] One wash load corresponds to a dosage of 35 g of detergent or cleaning agent per 4.5 kg of laundry.

[0058] The liquid detergent or cleaning agent is contained in a water-soluble coating.

[0059] A water-soluble package contains the liquid detergent or cleaning agent and a water-soluble wrapper. The water-soluble wrapper is preferably made of a water-soluble film material.

[0060] Such water-soluble packaging can be produced either by vertical form fill seal (VFFS) or thermoforming processes.

[0061] The thermoforming process generally includes forming a first layer of a water-soluble film material to form recesses for receiving a composition therein, filling the composition into the recesses, covering the composition-filled recesses with a second layer of a water-soluble film material, and sealing the first and second layers together at least around the recesses.

[0062] The water-soluble wrapping is preferably formed from a water-soluble film material selected from the group comprising polymers and polymer blends. The wrapping can be formed from one or two or more layers of the water-soluble film material. The water-soluble film material of the first layer and the additional layers, if present, can be the same or different.

[0063] It is preferred that the water-soluble coating contains polyvinyl alcohol or a polyvinyl alcohol copolymer.

[0064] Suitable water-soluble films for producing the water-soluble coating are preferably based on a polyvinyl alcohol or a polyvinyl alcohol copolymer whose molecular weight is in the range from 10,000 to 1,000,000 gmol -1< , preferably from 20,000 to 500,000 gmol -1< , particularly preferably from 30,000 to 100,000 gmol -1< and in particular from 40,000 to 80,000 gmol -1<.

[0065] Polyvinyl alcohol is typically produced by hydrolysis of polyvinyl acetate, since the direct synthesis route is not possible. The same applies to polyvinyl alcohol copolymers, which are produced from polyvinyl acetate copolymers. It is preferred if at least one layer of the water-soluble coating comprises a polyvinyl alcohol whose degree of hydrolysis is 70 to 100 mol%, preferably 80 to 90 mol%, particularly preferably 81 to 89 mol%, and especially 82 to 88 mol%.

[0066] A polymer selected from the group comprising (meth)acrylic acid-containing (co)polymers, polyacrylamides, oxazoline polymers, polystyrenesulfonates, polyurethanes, polyesters, polyethers, polylactic acids, or mixtures of the above polymers can additionally be added to a polyvinyl alcohol-containing film material suitable for producing the water-soluble wrapping. A preferred additional polymer is polylactic acids.

[0067] Preferred polyvinyl alcohol copolymers comprise, in addition to vinyl alcohol, dicarboxylic acids as further monomers. Suitable dicarboxylic acids are itaconic acid, malonic acid, succinic acid, and mixtures thereof, with itaconic acid being preferred.

[0068] Likewise preferred polyvinyl alcohol copolymers comprise, in addition to vinyl alcohol, an ethylenically unsaturated carboxylic acid, its salt, or its ester. Particularly preferably, such polyvinyl alcohol copolymers contain, in addition to vinyl alcohol, acrylic acid, methacrylic acid, acrylic acid esters, methacrylic acid esters, or mixtures thereof.

[0069] It may be preferred for the film material to contain further additives. The film material may contain, for example, plasticizers such as dipropylene glycol, ethylene glycol, diethylene glycol, propylene glycol, glycerin, sorbitol, mannitol, or mixtures thereof. Further additives include, for example, release aids, fillers, crosslinking agents, surfactants, antioxidants, UV absorbers, antiblocking agents, anti-adhesive agents, or mixtures thereof.

[0070] Suitable water-soluble films for use in the water-soluble wrappers of the water-soluble packages according to the invention are films sold by MonoSol LLC, for example, under the designation M8630, M8310, C8400, or M8900. Other suitable films include films designated Solublon®< PT, Solublon®< GA, Solublon®< KC, or Solublon®< KL by Aicello Chemical Europe GmbH, or VF-HP films by Kuraray.

[0071] In a preferred embodiment, the water-soluble packaging has a chamber for receiving the liquid washing or cleaning agent.

[0072] In a further, likewise preferred embodiment, the water-soluble packaging has two chambers. In this embodiment, the first chamber contains the liquid washing or cleaning agent described above, and the second chamber can contain a solid or liquid washing or cleaning agent.

[0073] If the water-soluble packaging has three compartments, each of these compartments can contain a liquid detergent or cleaning agent. However, it is also possible for one compartment to contain a solid detergent or cleaning agent and two compartments to contain a liquid detergent or cleaning agent. Furthermore, it is possible for two compartments to contain a solid detergent or cleaning agent and one compartment to contain a liquid detergent or cleaning agent.

[0074] For water-soluble packaging with four or more chambers, there are even more combination options with regard to the number of chambers with a solid or liquid detergent or cleaning agent.

[0075] In water-soluble packages with two or more compartments, at least one compartment contains the above-described liquid washing or cleaning agent according to the invention, containing exclusively surfactants obtained from renewable raw materials. The liquid washing or cleaning agents contained in the other compartments of a water-soluble package can have the same composition. Preferably, the liquid washing or cleaning agents in a water-soluble package with at least two compartments have compositions that differ at least in the content of one ingredient.

[0076] The total amount of detergent or cleaning agent contained in the water-soluble packaging preferably corresponds to the full or half dose required for one wash cycle. Examples

[0077] Liquid detergents or cleaning agents were prepared using conventional and known methods and processes. Table 1 below shows the compositions of two detergents or cleaning agents E1 and E2 according to the invention, as well as four detergents or cleaning agents C1 to C4 not according to the invention. Table 1: Liquid washing or cleaning agents E1 and E2 and V1 to V4 [all amounts are given in wt% active ingredient, based on the composition] Ingredients E1 E2 V1 V2 V3 V4 Na lauryl ether sulfate (2 EO) 12 12 12 12 12 12 C 12-18 fatty alcohol with 7 EO 25 25 25 25 25 25 C 12-18 fatty acid 15 15 15 15 15 15 Ethanol 1,4 1,4 -- -- -- -- Isopropanol -- -- 1,4 1,4 1,4 1,4 Phosphonate 1 1 1 1 1 1 Monoethanolamine 3,86 3,86 3,94 3,67 3,71 3,91 Citric acid, sodium salt -- -- -- 1,4 2,25 -- MgCl 2 x 6 H 2 O -- -- -- -- -- 1,4 Dyes, enzymes (cellulase, amylase & protease), 0,8 0,8 0,8 0,8 0,8 0,8 perfume Optical brightener 0,1 -- 0,1 0,1 0,1 0,1 Water 2 2 2 2 2 2 1,2-Propanediol to 100 to 100 to 100 to 100 to 100 to 100

[0078] The ionic strength Ic of the liquid detergents or cleaning agents E1 and E2 was less than 150 mmol / l in each case. The amount of aerobically non-biodegradable organic ingredients (aNBO) in each of the detergents or cleaning agents E1 and E2 was 0.13 g per kg of wash load. The amount of aerobically non-biodegradable organic ingredients (aNBO) in each of the detergents or cleaning agents E1 and E2 was 0.14 g per kg of wash load. The water activity aw of the liquid detergents or cleaning agents E1 and E2 was 0.45 in each case.

[0079] To produce water-soluble packaging containing detergents or cleaning agents E1 and E2, as well as V1 to V4, a 76 µm thick M 8630 film (formerly Monosol) was vacuum-drawn into a trough to form a bulge. The bulge was then filled with 30 ml of one of the liquid detergents or cleaning agents E1, E2, or V1 to V4. After covering the bulges filled with the agent with a second layer of M 8630 film, the first and second layers were sealed together. The sealing temperature was 150 °C, and the sealing time was 1.1 seconds.

[0080] After 4, 8, and 12 weeks of storage of the water-soluble packaging containing detergents or cleaning agents E1 and E2 under various climatic conditions, no deterioration or dissolution of the water-soluble coating was observed. Furthermore, no pores or holes, which would also lead to product egress or leakage, were detected.

[0081] Water-soluble packaging containing the liquid washing or cleaning agents E1 and E2 dissolved without residue in wash cycles at temperatures ranging from 20 to 95 °C and showed equally good cleaning performance compared to a water-soluble packaging containing a liquid washing or cleaning agent containing C 12-18 fatty acid soap, C 12-18 fatty alcohol with 7 EO and a C 9-13 alkylbenzenesulfonate as a surfactant system.

[0082] In water-soluble packaging containing liquid detergents or cleaning agents V2 to V4, heavy sedimentation was observed after just one day. The liquid detergent or cleaning agent V1 gelled during storage in the water-soluble packaging. In addition, liquid leaked through the water-soluble coating onto the surface of the water-soluble packaging.

Claims

1. A water-soluble packaging which contains a liquid washing or cleaning agent and a water soluble wrapping, characterized in that the liquid washing or cleaning agent contains a) non-ionic surfactant selected from the group consisting of alkoxylated fatty alcohols, alkyl polyglycosides, ethoxylated methyl esters of natural fatty acids and mixtures thereof, b) a mixture of fatty alcohol ether sulfates and fatty acid soaps as anionic surfactants, c) organic solvent which comprises a mixture of 1,2-propanediol and ethanol, d) up to 15 wt.%, based on the entire washing or cleaning agent, water, e) up to 50 wt.%, based on the entire washing or cleaning agent, 1,2-propanediol, and f) 1 to 5 wt.%, based on the entire washing or cleaning agent, ethanol, and is g) free of isopropanol, preferably free of additional organic solvents, wherein the total amount of anionic surfactant is up to 35 wt.% based on the entire washing or cleaning agent and the washing or cleaning agent is free of further anionic surfactants apart from those mentioned under b).

2. The water-soluble packaging according to claim 1, characterized in that the ionic strength Ic of the washing or cleaning agent is less than 250 mmol / l.

3. The water-soluble packaging according to one of claims 1 to 2, characterized in that the liquid washing or cleaning agent contains at least 5 wt.% fatty alcohol ether sulfate.

4. The water-soluble packaging according to one of claims 1 to 3, characterized in that the washing or cleaning agent has a water activity aw ≥ 0.38.

5. The water-soluble packaging according to one of claims 1 to 4, characterized in that the water-soluble wrapping contains polyvinyl alcohol or a polyvinyl alcohol copolymer.

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