DEVICE FOR THE RELEASE OF VOLATILE SUBSTANCES INTO THE ENVIRONMENT

Description

[0001] The present invention relates to a kit for manufacturing a device for releasing an active ingredient into the environment, comprising or consisting of a) a composition comprising or consisting of a1) a water-miscible solvent, a2) one or more active ingredients and b) at least one diffusion rod comprising or consisting of i) fibers of plant origin and / or ii) fibers of animal origin and / or iii) a plastic.The present invention further relates to a device for releasing an active ingredient into the environment, comprising or comprising: a) a liquid composition comprising or comprising: a1) a water-miscible solvent, a2) one or more active ingredients, and a3) water; b) at least one diffusion rod comprising or comprising: i) fibers of plant origin and / or ii) fibers of animal origin and / or iii) a plastic; and c) a container having at least one opening and comprising the liquid composition. The present invention further relates to a method for manufacturing a device for releasing an active ingredient, such as the use of diffusion rods comprising or comprising: i) fibers of plant origin and / or ii) fibers of animal origin in vaporization systems.The present invention also relates to the use of diffusion rods in devices (1) for releasing an active ingredient.

[0002] In addition to spray systems, evaporative systems are also frequently used to scent and refresh rooms. Compared to spray systems, evaporative systems have the advantage of producing a nearly constant fragrance throughout their operation, whereas spray systems only produce an intense fragrance after each spray, which gradually diminishes.

[0003] Evaporation systems typically consist of a container holding a fragrance dissolved in an organic solvent and a diffusion rod within the container. The diffusion rods are designed to draw in the organic solvent and the fragrance dissolved in the solvent via capillary action and transport them out of the container along the rod. The organic solvent and fragrance then evaporate from the surface of the diffusion rods, releasing the fragrance (and solvent) into the surrounding environment.

[0004] The evaporation systems described in the prior art typically have the disadvantage that the composition, containing the organic solvent and the fragrance dissolved in the organic solvent, is always sold as a ready-to-use mixture. This is because there is virtually no possibility for the consumer to finalize the evaporation device themselves by diluting a concentrate with an organic solvent to obtain the ready-to-use composition. The necessary organic solvents are not readily available to consumers, so it has been standard practice to offer ready-to-use mixtures. As a result, the evaporation systems are heavy (and bulky) and can have a negative impact on the environmental footprint during production, transport, and storage.

[0005] Furthermore, the evaporation systems described in the prior art have the disadvantage of containing a high proportion of volatile organic compounds (VOCs), i.e., organic substances that evaporate into the gas phase at room temperature or higher temperatures. While the evaporation of the aromas or other active ingredients of the evaporation system is desirable, the evaporation of the solvents used is merely a necessary evil. These solvents, which are mostly odorless or have very little scent, do not contribute to the fragrance and freshening of rooms but do increase the concentration of volatile organic compounds in the room air. Moreover, these organic solvents are usually flammable and increase the risk of fire.

[0006] WO 2018 / 091686 reveals an air freshener with a cellulose wick.

[0007] The object of the present invention was to provide an evaporation system in which a) the weight of the fragrance composition can be reduced in order to reduce the energy required for its manufacture, storage and transport, thus achieving an improved environmental footprint and / or b) the proportion of volatile organic compounds released during the use of the vaporizer device.

[0008] This problem was solved by a kit for manufacturing a device (1) for releasing an active ingredient into the environment, according to claim 1.

[0009] A device for releasing an active ingredient into the environment (also called an evaporation system) can be produced from a kit according to the invention by placing the kit composition into a container and adding a defined quantity of water to this composition (5). The diffusion rods (3, 3', 3") must then be inserted into the resulting water-containing composition such that one end of the diffusion rods is immersed in the composition and the other ends of the diffusion rods extend out of the container containing the composition. In the resulting device for releasing an active ingredient, the composition (5) then consists of or comprises a1) a water-miscible solvent, a2) one or more active ingredients, and a3) water.This allows the consumer to obtain a ready-to-use composition from the kit according to the invention by adding water, which can then be used in a device for releasing an active ingredient. Since the prepared composition can typically contain up to 90% water by weight, a weight and volume saving of up to 90% (and sometimes even more) is possible. A device (1) for releasing an active ingredient from a kit according to the invention is thus produced by adding water, which is always readily available to the consumer. It is not necessary for the consumer to store and use organic solvents.

[0010] Furthermore, during the use of the resulting evaporation system, the proportion of volatile organic compounds is significantly reduced, since up to 90 wt% water is typically used instead of an organic solvent.

[0011] In the context of the present invention, a water-miscible solvent is understood to be a solvent which can be mixed with water in any ratio at a temperature of 25 °C and thereby forms a completely homogeneous phase.

[0012] A kit according to the invention is particularly preferred if it additionally includes c) a container (2) having at least one opening (4). It is preferred according to the invention if the kit composition is already contained in the container (2). The consumer can then add water to the container to obtain a ready-to-use composition, preferably with a corresponding fill line in the container indicating the level to which the water must be added. Alternatively, it is of course possible that no such container is included with the kit and the consumer uses their own container or reuses a container contained in a previous kit.Unless the kit includes a suitable container having a container opening (4) and a sufficient internal volume to accommodate the composition along with water, the composition is preferably filled into a smaller container, made of ceramic, metal, glass or plastic, or a bag.

[0013] Another aspect of the present invention relates to a device (1) for releasing an active ingredient into the environment, preferably made from a kit according to the invention, consisting of or comprising a) a liquid composition (5) consisting of or comprising a1) a water-miscible solvent a2) one or more active substances and a3) water b) at least one diffusion rod (3, 3', 3") consisting of or comprising i) fibers of plant origin and / or ii) fibers of animal origin and / or iii) a plastic. and c) a container (2) having at least one container opening (4) and comprising the liquid composition (5).

[0014] According to the invention, it is preferred if the container (2) is a glass container, ceramic container, or metal container. These containers have the advantage that they can be washed and reused without absorbing odors. Furthermore, with these materials, there is no risk of discoloration. As an alternative to glass, a container made of plastic, preferably a transparent plastic, is also possible – although this is less preferred. Thus, according to the invention, containers made of glass, ceramic, metal, or plastic can be used. According to the invention, it is preferred if the container has a filling volume (internal volume) in the range of 25 to 250 mL, preferably in the range of 40 to 220 mL. Containers with a filling volume of 50 mL ± 15 mL, 90 mL ± 15 mL, 100 mL ± 15 mL, 120 mL ± 15 mL, 200 mL ± 15 mL or 250 mL ± 15 mL are typically used.

[0015] Another aspect of the present invention relates to a composition consisting of or comprising a1) a water-miscible solvent a2) one or more active ingredients and a3) optionally water.

[0016] Where only one composition is mentioned below, it may refer to a composition of the kit according to the invention, a liquid composition of the device (1) according to the invention, or a composition according to the invention. Otherwise, a distinction is made between a composition of the kit according to the invention and a composition of the device (1) according to the invention.

[0017] According to the invention, it is preferred if the composition additionally contains a4) a surfactant. Particularly with a high water content, it may be necessary to add a surfactant to produce an emulsion of the active ingredient and the solvent (a1) the water-miscible solvent and a3) water). Whether a surfactant is required depends on the solubility of the active ingredient in water.

[0018] Our own investigations have shown that, according to the invention, it is preferred if the surfactant has an HLB value calculated according to Griffin in the range of 3 to 20, preferably in the range of 6 to 20, particularly preferably in the range of 9 to 20.

[0019] According to the invention, the surfactant preferably comprises surfactants selected from the group consisting of non-ionic surfactants, anionic surfactants, cationic surfactants and amphoteric surfactants.

[0020] According to the invention, the non-ionic surfactant is particularly preferably a compound having several alcohol groups, a compound having one or more ether groups, or a compound having both alcohol groups and ether groups (e.g. ethoxylates).

[0021] According to the invention, the anionic surfactant is particularly preferably a compound having one or more carboxylate groups, a compound having one or more sulfonate groups, or a compound having one or more sulfate groups.

[0022] According to the invention, the cationic surfactant is preferably a compound comprising one or more quaternary ammonium groups.

[0023] According to the invention, the amphoteric surfactant is particularly preferably a compound comprising both carboxylate groups and quaternary ammonium groups.

[0024] Typical examples of nonionic surfactants are fatty alcohol polyglycol ethers, alkylphenol polyglycol ethers, fatty acid polyglycol esters, fatty acid amide polyglycol ethers, fatty amine polyglycol ethers, alkoxylated triglycerides, mixed ethers or mixed formals, optionally partially oxidized alk(en)yl oligoglycosides or glucuronic acid derivatives, fatty acid N-alkylglucamides, protein hydrolysates (especially plant-based products derived from wheat), polyol fatty acid esters, sugar esters, sorbitan esters, polysorbates, and amine oxides. If the nonionic surfactants contain polyglycol ether chains, these may exhibit a conventional, but preferably a restricted, homolog distribution.

[0025] Typical examples of anionic surfactants are soaps, alkylbenzenesulfonates, alkanesulfonates, olefin sulfonates, alkyl ethersulfonates, glycerol ethersulfonates, α-methyl ester sulfonates, sulfofatidic acids, alkyl sulfates, alkyl ether sulfates, glycerol ether sulfates, fatty acid ether sulfates, hydroxy mixed ether sulfates, monoglyceride (ether) sulfates, fatty acid amide (ether) sulfates, mono- and dialkyl sulfosuccinates, mono- and dialkyl sulfosuccinamates, sulfotriglycerides, amide soaps, ether carboxylic acids and their salts, fatty acid isethionates, fatty acid sarcosinates, fatty acid taurides, N-acylamino acids, such as acyl lactylates, acyltartrates, acyl glutamates and acylaspartates, alkyl oligoglucoside sulfates, protein fatty acid condensates (especially plant-based wheat products) and alkyl (ether) phosphates. Alkyl sulfates, alkyl ether sulfates, alkyl sulfonates, alkylaryl sulfonates, alkyl succinates, alkyl sulfosuccinates, N-alkoyl sarcosinates, acyl taurates, acyl isothionates, alkyl phosphates, alkyl ether phosphates,Alkyl ether carboxylates, alpha-olefin sulfonates, in particular the alkali and alkaline earth metal salts, e.g., sodium, potassium, magnesium, calcium, as well as ammonium and triethanolamine salts. The alkyl ether sulfates, alkyl ether phosphates, and alkyl ether carboxylates can contain between 1 and 10 ethylene oxide or propylene oxide units, preferably 1 to 3 ethylene oxide units, in the molecule. Examples include sodium lauryl sulfate, ammonium tauryte sulfate, sodium lauryl ether sulfate, ammonium lauryl ether sulfate, sodium lauryl sarcosinate, sodium oleyl succinate, ammonium lauryl sulfosuccinate, sodium dodecylbenzenesulfonate, and triethanolamine dodecylbenzenesulfonate.

[0026] If the anionic surfactants contain polyglycol ether chains, these can have a conventional, but preferably a narrow homolog distribution.

[0027] Typical examples of cationic surfactants are quaternary ammonium compounds, such as cetyltrimethylammonium chloride, dimethyldistearylammonium chloride, and esterquats, especially quaternary fatty acid trialkanolamine ester salts.

[0028] Suitable amphoteric surfactants include, for example, aminopropionates, aminoglycinates, imidazolinium betaines and sulfobetaines, alkyl betaines, alkylamidopropyl betaines, alkyl sulfobetaines, alkyl glycinates, alkyl carboxyglycinates, alkylamphoacetates or propionates, alkylamphodiacetates or dipropionates.

[0029] According to the invention, it is preferred if the active ingredient(s) are fragrances, antimicrobial agents, and / or insect repellents. However, it is not excluded that, for example, some fragrances may also have an effect against insects, as is the case, for instance, with citronellol and geraniol. According to the invention, it is particularly preferred that the active ingredient be a fragrance.

[0030] In this text, fragrances are understood to be a substance or mixture of substances that is perceived olfactorily.

[0031] The selection of fragrances is very comprehensive; suitable fragrances that can be used according to the invention can be found, for example, in "S. Arctander, Perfume and Flavor Chemicals, Vols. I and II, Montclair, NJ, 1969, Self-published" or "H. Surburg and J. Panten, Common Fragrance and Flavor Materials, 6th ed., Wiley-VCH, Weinheim, 2016". Specifically, the following fragrances are selected from the group of the hydrocarbons, preferably 3-carene; α-pinene; β-pinene; α,-terpinene; γ-terpinene; p-cymene; bisabolene; camphene; caryophyllene; cedrene; farnesene; limonene; longifolene; myrcene; ocimene; valencene; (E,Z)-1,3,5-undecatriene; styrene; diphenylmethane; of the aliphatic alcohols, preferably hexanol; octanol; 3-octanol; 2,6-dimethylheptanol; 2-methyl-2-heptanol; 2-methyl-2-octanol; (E)-2-hexenol; (E)- and (Z)-3-hexenol; 1-octen-3-ol; Mixture of 3,4,5,6,6-pentamethyl-3 / 4-hepten-2-ol and 3,5,6,6-tetramethyl-4-methyleneheptan-2-ol; (E,Z)-2,6-nonadienol; 3,7-dimethyl-7-methoxyoctan-2-ol; 9-decenol; 10-undecenol; 4-methyl-3-decen-5-ol; 3,7-dimethyl-6-octen-1-ol; of the aliphatic aldehydes and their acetals, preferably hexanal; heptanal; octanal; nonanal; decanal; undecanal; dodecanal; tridecanal; 2-methyloctanal; 2-methylnonanal; (E)-2-hexenal; (Z)-4-heptenal; 2,6-Dimethyl-5-heptenal; 10-Undecenal; (E)-4-Decenal; 2-dodecenal; 2,6,10-trimethyl-9-undecenal;2,6,10-Trimethyl-5,9-undecadienal; Heptanaldiethylacetal; 1,1-Dimethoxy-2,2,5-trimethyl-4-hexene; Citronellyloxyacetaldehyde; 1-(1-Methoxy-propoxy)-(E / Z)-3-hexene; of the aliphatic ketones and their oximes, preferably 2-heptanone; 2-octanone; 3-octanone; 2-nonanone; 5-methyl-3-heptanone; 5-methyl-3-heptanone oxime; 2,4,4,7-tetramethyl-6-octen-3-one; 6-methyl-5-hepten-2-one; 1-(1,2,3,4,5,6,7,8-OCTAHYDRO-2,3,8,8-TETRAMETHYL-2-NAPHTHYL)ETHAN-1-ONE; 3-METHYL-4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)-3-BUTEN-2-ONE of the aliphatic sulfur-containing compounds, preferably 3-methylthiohexanol; 3-methylthiohexyl acetate; 3-mercaptohexanol; 3-mercaptohexyl acetate; 3-mercaptohexyl butyrate; 3-acetylthiohexyl acetate; 1-menthene-8-thiol; of the aliphatic nitriles, preferably 2-nonenonitrile; 2-undecenonitrile; 2-tridecenitrile; 3,12-Tridecadienitrile; 3,7-Dimethyl-2,6-octadienonitrile; 3,7-Dimethyl-6-octenonitrile;Esters of aliphatic carboxylic acids, preferably (E)- and (Z)-3-hexenyl formate; ethyl acetoacetate; isoamyl acetate; hexyl acetate; 3,5,5-trimethylhexyl acetate; 3-methyl-2-butenyl acetate; (E)-2-hexenyl acetate; (E)- and (Z)-3-hexenyl acetate; octyl acetate; 3-octyl acetate; 1-octen-3-yl acetate; ethyl butyrate; butyl butyrate; isoamyl butyrate; hexyl butyrate; (E)- and (Z)-3-hexenyl isobutyrate; hexyl crotonate; ethyl isovalericate; ethyl 2-methyl pentanoate; ethyl hexanoate; allyl hexanoate; ethyl heptanoate; allyl heptanoate; ethyl octanoate; ethyl (E,Z)-2,4-decadienoate; methyl 2-octinate; methyl 2-noninate; allyl 2-isoamyloxyacetate; Methyl 3,7-dimethyl-2,6-octadienoate; 4-methyl-2-pentyl crotonate; the acyclic terpene alcohols, preferably citronellol; geraniol; Nerol; linalool; lavadulol; nerolidol; farnesol; tetrahydrolinalool; tetrahydrogeraniol; 2,6-Dimethyl-7-octen-2-ol; 2,6-Dimethyloctan-2-ol; 2-Methyl-6-methylene-7-octen-2-ol; 2,6-Dimethyl-5,7-octadien-2-ol; 2,6-Dimethyl-3,5-octadien-2-ol;3,7-Dimethyl-4,6-octadien-3-ol; 3,7-Dimethyl-1,5,7-octatrien-3-ol; 2,6-Dimethyl-2,5,7-octatrien-1-ol; and their formates, acetates, propionates, isobutyrates, butyrates, isovalerates, pentanates, hexanoates, crotonates, tiglinates, and 3-methyl-2-butenoates; the acyclic terpene aldehydes and ketones, preferably geranial; neral; citronellal; 7-hydroxy-3,7-dimethyloctanal; 7-methoxy-3,7-dimethyloctanal; 2,6,10-trimethyl-9-undecenal; geranyl acetone; and the dimethyl and diethyl acetals of geranial, neral, and 7-hydroxy-3,7-dimethyloctanal; of the cyclic terpene alcohols, preferably isopulegol; alpha-terpineol; terpinenol-4; menthan-8-ol; menthan-1-ol; menthan-7-ol; borneol; isoborneol; linalool oxide; nopol; cedrol; ambrinol; vetiverol; guajol; and their formates, acetates, propionates, isobutyrates, butyrates, isovalerates, pentanates, hexanoates, crotonates, tiglinates and 3-methyl-2-butenoate; menthyl formate; menthyl propionate; menthyl butyrate; menthyl isobutyrate; menthyliosovalerate;Menthyl hexanoate; menthyl crotonate; menthyl tiglinate; of the cyclic terpene aldehydes and ketones, preferably menthone; isomenthone; 8-mercaptomenthan-3-one; carvone; camphor; fenchone; alpha-ionone; beta-ionone; beta-n-methylionone; beta-isomethylionone; alpha-iron; alpha-damascone; beta-damascone; beta-damascenone; delta-damascone; gamma-damascone; 1-(2,4,4-trimethyl-2-cyclohexen-1-yl)-2-buten-1-one; 1,3,4,6,7,8a-Hexahydro-1,1,5,5-tetramethyl-2H-2,4a-methanonaphthalen-8(5H)-one; 2-Methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2-butenal; Nootkatone; Dihydro-nootkatone; 4,6,8-Megastigmatrien-3-one; alpha-Sinensal; beta-Sinensal; acetylated cedarwood oil (methylcedryl ketone); of the cyclic alcohols, preferably 4-tert-butylcyclohexanol; 3,3,5-Trimethylcyclohexanol; 3-Isocamphylcyclohexanol; 2,6,9-Trimethyl-Z2,Z5,E9-cyclododecatrien-1-ol; 2-Isobutyl-4-methyltetrahydro-2H-pyran-4-ol; of the cycloaliphatic alcohols, preferably alpha,3,3-trimethylcyclohexylmethanol;1-(4-Isopropylcyclohexyl)ethanol; 2-Methyl-4-(2,2,3-trimethyl-3-cyclopent-1-yl)butanol; 2-Methyl-4-(2,2,3-trimethyl-3-cyclopent-1-yl)-2-buten-1-ol; 2-Ethyl-4-(2,2,3-trimethyl-3-cyclopent-1-yl)-2-buten-1-ol; 3-Methyl-5-(2,2,3-trimethyl-3-cyclopent-1-yl)-pentan-2-ol; 3-Methyl-5-(2,2,3-trimethyl-3-cyclopent-1-yl)-4-penten-2-ol; 3,3-Dimethyl-5-(2,2,3-trimethyl-3-cyclopent-1-yl)-4-penten-2-ol; 1-(2,2,6-Trimethylcyclohexyl)pentan-3-ol; 1-(2,2,6-Trimethylcyclohexyl)hexan-3-ol; der cyclischen und cycloaliphatischen Ether, dabei bevorzugt Cineol; Cedrylmethylether; Cyclododecylmethylether; 1,1-Dimethoxycyclododecan; (Ethoxymethoxy)cyclododecan; alpha-Cedrenepoxid; 3a,6,6,9a-Tetramethyldodecahydronaphtho[2,1-b]furan; 3a-Ethyl-6,6,9a-trimethyldodecahydronaphtho[2,1-b]furan; 1,5,9- Trimethyl-13-oxabicyclo[10.1.0]trideca-4,8-dien; Rosenoxid; 2-(2,4-Dimethyl-3-cyclohexen-1-yl)-5-methyl-5-(1-methylpropyl)-1,3-dioxan;the cyclic and macrocyclic ketones, preferably 4-tert-butylcyclohexanone; 2,2,5-trimethyl-5-pentylcyclopentanone; 2-heptylcyclopentanone; 2-Pentylcyclopentanone; 2-Hydroxy-3-methyl-2-cyclopenten-1-one; 3-Methyl-cis-2-penten-1-yl-2-cyclopenten-1-one; 3-Methyl-2-pentyl-2-cyclopenten-1-one; 3-methyl-4-cyclopentadecenone; 3-methyl-5-cyclopentadecenone; 3-methylcyclopentadecanone; 4-(1-Ethoxyvinyl)-3,3,5,5-tetramethylcyclohexanone; 4-tert-pentylcyclohexanone; 5-Cyclohexadecen-1-one; 6,7-Dihydro-1,1,2,3,3-pentamethyl-4(5H)-indanone; 8-Cyclohexadecen-1-one; 9-Cycloheptadecen-1-one; Cyclopentadecanone; Cyclohexadecanone; of the cycloaliphatic aldehydes, preferably 2,4-Dimethyl-3-cyclohexenecarbaldehyde; 2-Methyl-4-(2,2,6-trimethyl-cyclohexen-1-yl)-2-butenal; 4-(4-Hydroxy-4-methylpentyl)-3-cyclohexenecarbaldehyde; 4-(4-Methyl-3-penten-1-yl)-3-cyclohexenecarbaldehyde; of the cycloaliphatic ketones, preferably 1-(3,3-Dimethylcyclohexyl)-4-penten-1-one;2,2-Dimethyl-1-(2,4-dimethyl-3-cyclohexen-1-yl)-1-propanone; 1-(5,5-Dimethyl-1-cyclohexen-1-yl)-4-penten-1-one; 2,3,8,8-tetramethyl-1,2,3,4,5,6,7,8-octahydro-2-naphthalenyl methyl ketone; Methyl 2,6,10-trimethyl-2,5,9-cyclododecatrienyl ketone; tert-butyl (2,4-dimethyl-3-cyclohexen-1-yl) ketone; the esters of cyclic alcohols, preferably 2-tert-butylcyclohexyl acetate; 4-tert-butylcyclohexyl acetate; 2-tert-pentylcyclohexyl acetate; 4-tert-pentylcyclohexyl acetate; 3,3,5-trimethylcyclohexyl acetate; decahydro-2-naphthyl acetate; 2-cyclopentylcyclopentylcrotonate; 3-Pentyltetrahydro-2H-pyran-4-ylacetate; decahydro-2,5,5,8a-tetramethyl-2-naphthyl acetate; 4,7-methano-3a,4,5,6,7,7a-hexahydro-5, or 6-indenyl acetate; 4,7-methano-3a,4,5,6,7,7a-hexahydro-5, or 6-indenylpropionate; 4,7-methano-3a,4,5,6,7,7a-hexahydro-5, or 6-indenyl isobutyrate; 4,7-methanooctahydro-5 or 6-indenyl acetate; the esters of cycloaliphatic alcohols, preferably 1-cyclohexyl ethylcrotonate;of esters of cycloaliphatic carboxylic acids, preferably allyl 3-cyclohexyl propionate; allylcyclohexyloxyacetate; cis- and trans-methyldihydrojasmonate; cis- and trans-methyljasmonate; methyl 2-hexyl 3-oxocyclopentanecarboxylate; ethyl 2-ethyl 6,6-dimethyl 2-cyclohexenecarboxylate; ethyl 2,3,6,6-tetramethyl 2-cyclohexenecarboxylate; ethyl 2-methyl 1,3-dioxolane 2-acetate; of araliphatic alcohols, preferably benzyl alcohol; 1-phenylethyl alcohol; 2-phenylethyl alcohol; 3-phenylpropanol; 2-phenylpropanol; 2-phenoxyethanol; 2,2-dimethyl 3-phenylpropanol; 2,2-dimethyl 3-(3-methylphenyl)propanol; 1,1-Dimethyl-2-phenylethyl alcohol; 1,1-Dimethyl-3-phenylpropanol; 1-Ethyl-1-methyl-3-phenylpropanol; 2-Methyl-5-phenylpentan-1-ol; 3-Methyl-5-phenylpentanol; 3-Phenyl-2-propen-1-ol; 4-Methoxybenzyl alcohol; 1-(4-Isopropylphenyl)ethanol; the esters of aliphatic alcohols and aliphatic carboxylic acids, preferably benzyl acetate; benzyl propionate; benzyl isobutyrate; benzyl isovalerate;2-phenylethyl acetate; 2-phenylethyl propionate; 2-phenylethyl isobutyrate; 2-phenylethyl isovalerate; 1-phenylethyl acetate; alpha-trichloromethylbenzyl acetate; alpha,alpha-dimethylphenylethyl acetate; alpha,alpha-dimethylphenylethyl butyrate; cinnamyl acetate; 2-phenoxyethyl isobutyrate; 4-methoxybenzyl acetate; the araliphatic ethers, preferably 2-phenylethyl methyl ether; 2-phenylethyl isoamyl ether; 2-phenylethyl-1-ethoxyethyl ether; phenylacetaldehyde dimethyl acetal; phenylacetaldehyde diethylacetal; hydratropaaldehyde dimethyl acetal; phenylacetaldehyde glycerol acetal; 2,4,6-trimethyl-4-phenyl-1,3-dioxane; 4,4a,5,9b-Tetrahydroindeno[1,2-d]-m-dioxin; 4,4a,5,9b-Tetrahydro-2,4-dimethylindeno[1,2-d]-m-dioxin; of the aromatic and araliphatic aldehydes, preferably benzaldehyde; phenylacetaldehyde; 3-phenylpropanal; hydratropaaldehyde; 4-methylbenzaldehyde; 4-methylphenylacetaldehyde; 3-(4-ethylphenyl)-2,2-dimethylpropanal; 2-methyl-3-(4-isopropylphenyl)propanal; 2-methyl-3-(4-tert-butylphenyl)propanal;2-Methyl-3-(4-isobutylphenyl)propanal; 3-(4-tert.-Butylphenyl)propanal; Zimtaldehyd; alpha-Butylzimtaldehyd; alpha-Amylzimtaldehyd; alpha-Hexylzimtaldehyd; 3-Methyl-5-phenylpentanal; 4-Methoxybenzaldehyd; 4-Hydroxy-3-ethoxybenzaldehyd; 3,4-Methylendioxybenzaldehyd; 3,4-Dimethoxybenzaldehyd; 2-Methyl-3-(4-methoxyphenyl)propanal; 2-Methyl-3-(4-methylendioxyphenyl)propanal; der aromatischen und araliphatischen Ketone, dabei bevorzugt Acetophenon; 4-Methylacetophenon; 4-Methoxyacetophenon; 4-tert.-Butyl-2,6-dimethylacetophenon; 4-Phenyl-2-butanon; 4-(4-Hydroxyphenyl)-2-butanon; 1-(2-Naphthalenyl)ethanon;2-Benzofuranylethanon;(3-Methyl-2-benzofuranyl)ethanon; Benzophenon; 1,1,2,3,3,6-Hexamethyl-5-indanylmethylketon; 6-tert.-Butyl-1,1-dimethyl-4-indanylmethylketon; 1-[2,3-dihydro-1,1,2,6-tetramethyl-3-(1-methylethyl)-1H-5-indenyl]ethanon; 5',6',7',8'-Tetrahydro-3',5',5',6',8',8'-hexamethyl-2-acetonaphthon;of aromatic and araliphatic carboxylic acids and their esters, preferably benzoic acid; phenylacetic acid; methyl benzoate; ethyl benzoate; hexyl benzoate; methyl phenyl acetate; ethyl phenyl acetate; geranyl phenyl acetate; phenylethyl phenyl acetate; methyl cinnamate; ethyl cinnamate; benzyl cinnamate; phenylethyl cinnamate; cinnamyl cinnamate; allyl phenoxyacetate; methyl salicylate; isoamyl salicylate; hexyl salicylate; cyclohexyl salicylate; cis-3-hexenyl salicylate; benzyl salicylate; phenylethyl salicylate; methyl 2,4-dihydroxy-3,6-dimethyl benzoate; ethyl 3-phenyl glycidate; ethyl 3-methyl-3-phenyl glycidate; of nitrogen-containing aromatic compounds, preferably 2,4,6-trinitro-1,3-dimethyl-5-tert-butylbenzene; 3,5-dinitro-2,6-dimethyl-4-tert-butylacetophenone; cinnamic nitrile; 3-methyl-5-phenyl-2-pentenonitrile; 3-methyl-5-phenylpentanonitrile; methyl anthranilate; methyl-N-methyl anthranilate;Schiff bases of methyl anthranilate with 7-hydroxy-3,7-dimethyloctanal, 2-methyl-3-(4-tert-butylphenyl)propanal or 2,4-dimethyl-3-cyclohexenecarbaldehyde; 6-isopropylquinoline; 6-isobutylquinoline; 6-sec-butylquinoline; 2-(3-phenylpropyl)pyridine; indole; skatole; 2-methoxy-3-isopropylpyrazine; 2-isobutyl-3-methoxypyrazine; of phenols, phenyl ethers and phenyl esters, preferably estragole; anethole; eugenol; eugenyl methyl ether; isoeugenol; isoeugenyl methyl ether; thymol; carvacrol; diphenyl ether; beta-naphthyl methyl ether; beta-naphthyl ethyl ether; beta-naphthyl isobutyl ether; 1,4-dimethoxybenzene; Eugenyl acetate; 2-Methoxy-4-methylphenol; 2-Ethoxy-5-(1-propenyl)phenol; p-cresylphenyl acetate; of the heterocyclic compounds, preferably 2,5-Dimethyl-4-hydroxy-2H-furan-3-one; 2-Ethyl-4-hydroxy-5-methyl-2H-furan-3-one; 3-Hydroxy-2-methyl-4H-pyran-4-one; 2-Ethyl-3-hydroxy-4H-pyran-4-one; of the lactones, preferably 1,4-octanolide; 3-Methyl-1,4-octanolide; 1,4-nonanolide; 1,4-decanolide;8-Decen-1,4-olid; 1,4-Undecanolid; 1,4-Dodecanolid; 1,5-Decanolid; 1,5-Dodecanolid;4-Methyl-1,4-decanolid; 1,15-Pentadecanolid; cis- und trans-11-Pentadecen-1,15-olid; cis- und trans-12-Pentadecen-1,15-olid; 1,16-Hexadecanolid; 9-Hexadecen-1,16-olid; 10-Oxa-1,16-hexadecanolid; 11-Oxa-1,16-hexadecanolid; 12-Oxa-1,16-hexadecanolid; Ethylen-1,13-tridecandioat; Cumarin; 2,3-Dihydrocumarin; Octahydrocumarin. ;

[0032] The fragrances used according to the invention may also be essential oils, concretes, absolutes, resins, resinoids, balsams, and / or tinctures. Preferred essential oils, concretes, absolutes, resins, resinoids, balsams, and / or tinctures are preferably selected from the group consisting of: amber tincture; amyris oil; angelica seed oil; angelica root oil; anise oil; valerian oil; basil oil; treemoss absolute; bay oil; mugwort oil; benzoin oil; bergamot oil; beeswax absolute; birch tar oil; bitter almond oil; savory oil; buchu leaf oil; cabreuva oil; cade oil; calamus oil; camphor oil; cananga oil; cardamom oil; cascarilla oil; cassia oil; cassia absolute; castoreum absolute; cedar leaf oil; cedarwood oil; cistus oil; citronella oil; lemon oil. copaiva balm; copaiva balsam oil; coriander oil; costus root oil; cumin oil; cypress oil; davana oil; dill herb oil; dill seed oil; Eau de brouts absolute; oakmoss absolute; elemi oil; tarragon oil; Eucalyptus citriodora oil; eucalyptus oil; fennel oil; spruce needle oil;Galbanum oil; Galbanum resin; Geranium oil; Grapefruit oil; Guaiac wood oil; Gurjun balsam; Gurjun balsam oil; Helichrysum absolute; Helichrysum oil; Ginger oil; Orris root absolute; Orris root oil; Jasmine absolute; Calamus oil; Blue chamomile oil; Roman chamomile oil; Carrot seed oil; Cascarilla oil; Pine needle oil; Spearmint oil; Caraway oil; Labdanum oil; Labdanum absolute; Labdanum resin; Lavandin absolute; Lavandin oil; Lavender absolute; Lavender oil; Lemongrass oil; Lovage oil; Distilled lime oil; Pressed lime oil; Linaloe oil; Litsea cubeba oil; Bay leaf oil; Mace oil; Marjoram oil; Mandarin oil; Massoi bark oil; Mimosa absolute; Musk seed oil; Musk tincture; Clary sage oil; nutmeg oil; myrrh absolute; myrrh oil; myrtle oil; clove leaf oil; clove flower oil; neroli oil; Olibanum absolute; olibanum oil; Opopanax oil; orange blossom absolute; orange oil; origanum oil; palmarosa oil; patchouli oil; perilla oil; Peru balsam oil; parsley leaf oil; parsley seed oil; petitgrain oil; peppermint oil; pepper oil; allspice oil;Pine oil; Poley oil; Rose absolute; Rosewood oil; Rose oil; Rosemary oil; Dalmatian sage oil; Spanish sage oil; Sandalwood oil; Celery seed oil; Spike lavender oil; Star anise oil; Styrax oil; Marigold oil; Fir needle oil; Tea tree oil; Turpentine oil; Thyme oil; Tolu balsam; Tonka bean absolute; Tuberose absolute; Vanilla extract; Violet leaf absolute; Verbena oil; Vetiver oil; Juniper berry oil; Wine yeast oil; Wormwood oil; Wintergreen oil; Ylang oil; Hyssop oil; Civet absolute; Cinnamon leaf oil; Cinnamon bark oil.

[0033] A kit according to the invention is particularly preferably comprising (d) packaging that includes or contains components (a), (b), and optionally (c). It is particularly advantageous for retail sales if the individual components are packaged accordingly. Preferably, the packaging consists of or comprises paper, cardboard, or corrugated board.

[0034] According to the invention, it is preferred if the water-miscible solvent is an alcohol or an ether, preferably ethanol or dipropylene glycol methyl ether. Our own investigations have shown that the use of alcohols or ethers, in particular ethanol or dipropylene glycol methyl ether, exhibits particularly good properties in devices according to the invention. Both ethanol and dipropylene glycol methyl ether are miscible with water and have a sufficient vapor pressure at room temperature.

[0035] In a kit according to the invention, it is preferred if the composition of the kit according to the invention is liquid and all components of the composition are dissolved, i.e., a homogeneous phase is formed. It is also possible—although less preferred—if individual components of the composition of the kit according to the invention are not dissolved or only partially dissolved and are (partially) present as solids. In this case, however, it is preferred if, after the addition of water to the composition of the kit according to the invention during the preparation of the device according to the invention, all solids are dissolved and a homogeneous phase is formed. In a device according to the invention, it is preferred if the composition of the device according to the invention is liquid and all components of the composition are dissolved, i.e., a homogeneous phase is formed.Depending on the fragrances used, it is also possible that the fragrances or active ingredients are emulsified in the mixture of water and the water-miscible solvent, or that some of the fragrances or active ingredients are emulsified and some are dissolved. In this case, according to the invention, it is preferred if a heterogeneous mixture is present.

[0036] According to the invention, diffusion rods are preferred in which the fibers of plant origin are selected from the group consisting of cellulose fibers, seed fibers, bast fibers, and hard fibers. It is particularly preferred if the fibers of plant origin are cellulose fibers.

[0037] The use of diffusion rods containing or consisting of plant-based fibers has the advantage that, after use, they can be recycled with paper and are completely biodegradable. They can even be added to compost. Unlike diffusion rods containing plastics, those containing plant fibers break down into their constituent parts, are therefore biodegradable, and do not pollute the environment.

[0038] According to the invention, diffusion rods are preferred which comprise fibers of plant origin and no plastics.

[0039] Within the scope of the present invention, "wood or other plant parts" does not refer to material comprising or consisting of plant fiber or cellulose fibers. "Plant fibers" or "cellulose fibers" within the scope of the present invention refers to fibers resulting from the mechanical and / or chemical processing of wood or other plant parts, such as is customary in papermaking.

[0040] According to the invention, it is preferred if the mass fraction of cellulose fibers is greater than or equal to 60.0%, preferably greater than or equal to 70.0%, and particularly preferably greater than 75.0%, based on the total mass of the diffusion rod and determined as air-dried mass fraction (Lutro).

[0041] It is also preferred according to the invention if the mass fraction of cellulose fibers is less than or equal to 90.0%, preferably less than or equal to 85%, particularly preferably less than or equal to 80.0%, based on the total mass of the diffusion rod and determined as air-dried mass fraction (Lutro).

[0042] According to the invention, it is preferred if the mass fraction of cellulose fibers is in the range of 60.0% to 90.0%, preferably in the range of 70.0% to 85.0%, particularly preferably in the range of 75.0% to 80.0%, based on the total mass of the diffusion rod and determined as air-dried mass fraction (Lutro).

[0043] The water content of air-dried diffusion rods is typically in the range of 1 to 7 wt.%.

[0044] According to the invention, it is preferred that the at least one diffusion rod (3, 3', 3") or all diffusion rods comprise a binder, wherein the binder is preferably starch. The starch may be selected from the group consisting of natural starch, anionic starch, cationic starch, peroxidized starch, etherified starch, esterified starch, oxidized starch, hydrolyzed starch, dextrinized starch, hydroxyethylated starch, and acetylated starch. The use of natural starch is particularly preferred according to the invention.

[0045] According to the invention, it is preferred if the mass fraction of binder is in the range of 1.0% to 10.0%, preferably in the range of 2.0% to 8.0%, and particularly preferably in the range of 3.0% to 5.0%, based on the total mass of the diffusion rod and determined as air-dried mass fraction (Lutro).

[0046] Our own investigations have surprisingly shown that diffusion rods comprising cellulose fibers and starch as a binder exhibit particularly good transport properties for the compositions of the device. Typically, a person skilled in the art would have assumed that diffusion rods based on cellulose fibers would swell upon contact with compositions containing a high water content and would cease to function within a short time. Our own investigations have shown that diffusion rods consisting of cellulose fibers and starch are very compatible with aqueous compositions.

[0047] According to the invention, it is preferred that the at least one diffusion rod (3, 3', 3") or all diffusion rods comprise one or more fillers, the filler preferably being carbonates.

[0048] In this context, it is preferred according to the invention if the carbonates are selected from the group consisting of magnesium carbonate, calcium carbonate, beryllium carbonate, lithium carbonate, sodium carbonate, potassium carbonate and calcium magnesium carbonate, preferably selected from the group consisting of magnesium carbonate, calcium carbonate and calcium magnesium carbonate.

[0049] According to the invention, it is preferred if the mass fraction of filler is in the range of 3.0% to 25.0%, preferably in the range of 5.0% to 20.0%, and particularly preferably in the range of 10.0% to 15.0%, based on the total mass of the diffusion rod and determined as air-dried mass fraction (Lutro).

[0050] Our own investigations have shown that the physical properties of the diffusion rods can be further improved by using fillers, and especially carbonates. This makes it possible to use the diffusion rods for a long period of time, even if they consist mainly of cellulose fibers.

[0051] According to the invention, it is preferred if the cellulose fibers are softwood, hardwood, straw, or mixtures thereof. It is particularly preferred if the cellulose fibers are made from pine, birch, poplar, spruce, beech, or eucalyptus wood. Our own investigations have shown that these cellulose fibers exhibit particularly good properties for transporting the composition of the device according to the invention.

[0052] According to the invention, it is preferred if the diffusion rod comprises virgin fibers as cellulose fibers and the mass fraction of virgin fibers is greater than or equal to 80%, preferably greater than or equal to 90%, particularly preferably greater than or equal to 95%, based on the total mass of the cellulose fibers and determined as air-dried mass fraction (Lutro).

[0053] According to the invention, it is preferred if all cellulose fibers in the paper substrate are virgin fibers, i.e., where the mass fraction of virgin fibers is 100%, based on the total mass of the cellulose fibers and determined as air-dried mass fraction (Lutro).

[0054] According to the invention, it is preferred if the diffusion rod comprises recycled fibers as cellulose fibers and the mass fraction of recycled fiber is greater than or equal to 40%, preferably greater than or equal to 50%, particularly preferably greater than or equal to 60%, based on the total mass of the cellulose fibers and determined as air-dried mass fraction (Lutro).

[0055] According to the invention, it is preferred if the diffusion rods additionally comprise auxiliary materials selected from the group consisting of inorganic fillers, binders (preferably starch), alum and / or glue.

[0056] In an alternative design, diffusion rods are preferred in which the fibers of animal origin are selected from the group consisting of wool, fine animal hair, coarse animal hair and silk.

[0057] In an alternative design, diffusion rods are preferred in which the fibers of animal origin are selected from the group consisting of wool, fine animal hair, coarse animal hair and silk.

[0058] In an alternative embodiment, diffusion rods are preferred in which at least one diffusion rod (3, 3', 3") consists of or comprises plastic, wherein the polymer is preferably a polyester, and particularly preferably, wherein the polyester is polyethylene terephthalate.

[0059] Within the scope of the present invention, a polymer or plastic is understood to be a chemical substance consisting of macromolecules. According to the invention, it is particularly preferred that the polymer be a synthetic polymer, i.e., a macromolecule that has been produced industrially or on a laboratory scale. According to the invention, it is particularly preferred that the polymer is not cellulose or lignin.

[0060] It is also preferably the case according to the invention that the diffusion rod is not a diffusion rod that comprises or consists of rattan, bamboo, balsa wood, pedding cane or any other wood.

[0061] According to the invention, it is preferred if the at least one diffusion rod (3, 3', 3") is made of or comprises plastic and is a fiber diffusion rod. Within the scope of the present invention, a fiber diffusion rod is understood to be a diffusion rod formed from individual fibers running parallel to the length of the diffusion rod. To produce the fiber diffusion rods, the individual fibers can, for example, be glued together or thermally and / or by applying pressure, so that they form a solid fiber diffusion rod. Capillary spaces are formed within the diffusion rod by the individual fibers, which are suitable for absorbing liquids and conveying them by means of capillary forces.

[0062] According to the invention, it is preferred if the at least one diffusion rod (3, 3', 3") is made of or comprises plastic and is a fiber diffusion rod, and wherein the at least one diffusion rod comprises or consists of polyethylene terephthalate.

[0063] It is also preferably according to the invention that the diffusion rod is not a diffusion rod that comprises or consists of glass or glass fibers (glass fiber diffusion rod).

[0064] The diffusion rods can be colored with a dye. Care must be taken to ensure that the dye is bound within the material of the diffusion rod and that it does not bleed into the liquid composition. Suitable dyes are known to those skilled in the art. To improve the appearance of the device according to the invention, it is possible to use diffusion rods with different colors. Within the scope of the present invention, diffusion rods with different colors or designs are considered to belong to a single type, provided that the base material from which the diffusion rods are formed is identical. For example, diffusion rods made of polyethylene terephthalate that are only colored differently or contain other common polymer additives, but are otherwise identical in design, are to be considered a single type of diffusion rod.

[0065] According to the invention, the diffusion rods are preferably cylindrical. However, other shapes are also possible, such as cuboids. The rods can also have other cross-sections, such as hearts, stars, or snowflakes.

[0066] According to the invention, it is preferred if the diffusion rods have a diameter in the range of 2 to 10 mm, preferably in the range of 3 to 7 mm, and particularly preferably in the range of 3 to 5 mm. Diffusion rods with a diameter of 4 mm ± 0.5 mm are commonly used.

[0067] According to the invention, it is preferred if the diffusion rods have a length in the range of 50 to 240 mm, preferably in the range of 80 to 220 mm, and particularly preferably in the range of 90 to 200 mm. Diffusion rods with a length of 170 mm ± 20 mm, 200 mm ± 20 mm, or 240 mm ± 20 mm are typically used.

[0068] The diffusion and evaporation rate of the composition can be controlled by adjusting the length, diameter, and number of diffusion rods. Typically, three, four, five, six, seven, eight, or nine diffusion rods are used and are included in a kit according to the invention. Furthermore, the number, length, and diameter are also adapted to the quantity or container size.

[0069] It is according to the invention if the diffusion rods were produced by rolling paper.

[0070] According to the invention, it is preferred if the diffusion rods have a hollow core along their axis. In this embodiment, the diffusion rod is a hollow cylinder with an (outer) diameter, a core diameter (inner diameter), and a wall thickness.

[0071] Surprisingly, it has been shown that diffusion rods with a core running along their axis exhibit a higher evaporation rate. Without committing to a specific theory, it is assumed that the core acts as a capillary, further enhancing the transport of the composition. As is generally known, the capillary action of a tube depends on the diameter of the capillary. Our own investigations have shown that with a diameter of less than 0.60 mm, the capillarity is so high that the entire core is filled with the composition. However, with a core diameter of more than 4.0 mm, the capillary action of the core is often only weakly pronounced.

[0072] Diffusion rods with a core diameter of less than or equal to 0.50 mm are considered coreless diffusion rods within the scope of the present invention.

[0073] According to the invention, it is preferred if the core is open at the ends of the diffusion rods and the diameter at the ends is at most 50% smaller than the average diameter of the core along the diffusion rod, preferably at most 25% smaller, and more preferably at most 10% smaller. After the paper is rolled into a diffusion rod, the diffusion rods usually have to be cut to length, and this cutting process can result in the diameter of the core at the ends being smaller than along the diffusion rod. According to the invention, it is not preferred, and should be avoided, for the ends of the diffusion rod to be closed, even though a core is formed inside the diffusion rod.

[0074] According to the invention, a use is preferred in which the core has a diameter of at least 0.50 mm, preferably at least 0.60 mm, and more preferably at least 0.70 mm.

[0075] According to the invention, a use is preferred in which the core has a diameter of at most 3.5 mm, preferably at most 2.5 mm, more preferably at most 2.0 mm.

[0076] According to the invention, a use is preferred in which the core has a diameter in the range of 0.50 mm to 3.5 mm, preferably in the range of 0.60 mm to 3.0 mm, and more preferably in the range of 0.70 mm to 2.0 mm.

[0077] Our own investigations have shown that, with a diameter of 4 mm diffusion rods, the best evaporation properties are obtained for 50 mL of the composition when four diffusion rods with a length of 170 mm are used. With a diameter of 4 mm diffusion rods, the best evaporation properties are obtained for 100 mL of the composition when four diffusion rods with a length of 200 mm are used. With a diameter of 4 mm diffusion rods, the best evaporation properties are obtained for 120 mL of the composition when four diffusion rods with a length of 240 mm are used. With a diameter of 4 mm diffusion rods, the best evaporation properties are obtained for 200 mL of the composition when eight diffusion rods with a length of 240 mm are used.However, it is possible to use shorter diffusion rods and simultaneously increase the number and / or diameter of the diffusion rods.

[0078] According to the invention, it is preferred if all diffusion rods are identically designed and contain no other diffusion rods. Alternatively, different diffusion rods can be mixed together; for example, diffusion rods comprising or consisting of fibers of plant origin can be mixed with diffusion rods comprising or consisting of fibers of animal origin.

[0079] A device according to the invention is preferred, wherein the liquid composition 5 to 90 wt.%, preferably 6 to 70 wt.%, particularly preferably 8 to 65 wt.% of the water-miscible solvent; 1 to 25 wt.%, preferably 2 to 20 wt.%, particularly preferably 4 to 10 wt.% of one or more active ingredients; 10 to 90 wt.%, preferably 20 to 85 wt.%, particularly preferably 25 to 85 wt.% water and 0 to 20 wt.%, preferably 0.5 to 15 wt.%, particularly preferably 1.0 to 10 wt.% surfactant comprises or consists of, in each case in relation to the total weight of the composition.

[0080] Our own investigations have shown that it is preferable if the ratio between all active ingredients and the surfactant is in the range between 1 : 2 and 2 : 1.

[0081] A device (1) for releasing an active substance into the environment is particularly preferably consisting of or comprising a) a liquid composition (5) consisting of or comprising a1) 10 to 90 wt% ethanol and / or dipropylene glycol methyl ether a2) 1 to 25 wt% of one or more active ingredients, a3) 10 to 90 wt% water and a4) 0 to 10 wt% surfactant having an HLB value calculated according to Griffin in the range of 3 to 20, based on the total weight of the liquid composition b) at least one diffusion rod (3, 3', 3") consisting of or comprising cellulose fibers, natural starch and one or more carbonates and c) a container (2) having at least one container opening (4) and comprising the liquid composition (5).

[0082] A further aspect of the present invention relates to a method for manufacturing a device (1) for releasing an active ingredient comprising the following steps: i) Manufacturing or providing a kit according to the invention, ii) Transferring all components of the composition into a container having at least one container opening (4), and optionally mixing all components, and iii) Adding the diffusion rods (3, 3', 3") through the container opening, such that part of the respective diffusion rods (3, 3', 3") is in contact with the composition and part of the respective diffusion rods (3, 3', 3") extends out of the container through the container opening (4).

[0083] Another aspect of the present invention relates to the use of diffusion rods in devices (1) for releasing an active ingredient, wherein the composition comprising the active ingredient a1) a water-miscible solvent, a2) one or more active ingredients, a3) water and optionally a4) a surfactant comprising or consisting thereof and wherein the diffusion rods consist of or comprise i) fibers of plant origin and / or ii) fibers of animal origin.

[0084] The design of the kit or device according to the invention, particularly with regard to the diffusion rods and the composition, applies analogously to the use according to the invention. This applies in particular to the embodiments designated as preferred and especially preferred.

[0085] The invention is explained below by way of example with reference to a drawing. This shows in Fig. 1A device (1) according to the invention for releasing an active ingredient into the environment is shown schematically. A liquid composition (5) is contained in a container (2) having a container opening (4). The liquid composition (5) comprises water, a water-miscible solvent (ethanol or dipropylene glycol methyl ether), and one or more active ingredients (here, fragrances). Three diffusion rods (3, 3', 3") are arranged in the container, which are in contact with the liquid composition (5) in the container and extend out of the container (2) through the container opening (4). The diffusion rods (3, 3', 3") are diffusion rods that mainly comprise cellulose fibers and additionally natural starch and carbonates as fillers. Example 1:

[0086] A composition is prepared comprising 60 wt% dipropylene glycol methyl ether, 30 wt% water, and 10 wt% fragrance. This composition is transferred to a cylindrical glass bottle. Four diffusion rods made of cellulose fibers are inserted through the opening of the glass bottle, allowing the liquid composition to be transported out of the bottle via the diffusion rods and evaporate on their surface.

[0087] The fragrance intensity is very good throughout the entire duration. Example 2:

[0088] A composition is prepared comprising 10 wt% ethanol, 80 wt% water, 5 wt% surfactant, and 5 wt% fragrance. This composition is transferred to a cylindrical glass bottle. Four diffusion rods made of cellulose fibers are inserted through the opening of the glass bottle, allowing the liquid composition to be transported out of the bottle via the diffusion rods and evaporate on their surface.

[0089] The fragrance intensity is very good throughout the entire duration.

Claims

1. Kit for producing a device (1) for releasing an active substance into the surroundings, comprising or consisting of a) a composition consisting of or comprising a1) a water-miscible solvent a2) one or more active substances b) at least one diffusion stick (3, 3', 3") consisting of or comprising fibres of plant origin, wherein the diffusion stick or sticks are produced by rolling paper.

2. Kit according to claim 1, wherein the water-miscible solvent is an alcohol or an ether, preferably ethanol or dipropylene glycol methyl ether.

3. Kit according to any one of the preceding claims, wherein the composition is liquid and all components are dissolved therein.

4. Kit according to any one of the preceding claims, wherein the fibres of plant origin are selected from the group consisting of cellulose fibres, seed fibres, bast fibres and hard fibres.

5. Kit according to claim 4, wherein the mass fraction of cellulose fibres is in the range from 60.0% to 90.0%, preferably in the range from 70.0% to 85.0%, particularly preferably in the range from 75.0% to 80.0%, based on the total mass of the diffusion stick and determined as the air-dry mass fraction (lutro).

6. Kit according to any one of the preceding claims, wherein the at least one diffusion stick (3, 3', 3"), or all diffusion sticks, comprise a binder, wherein the binder is preferably starch.

7. Kit according to any one of claims 4 to 6, wherein the cellulose fibres are fibres from pine, birch, poplar, spruce, beech or eucalyptus wood.

8. Kit according to any one of the preceding claims, wherein the diffusion sticks have a diameter in the range from 2 to 10 mm, preferably in the range from 3 to 7 mm, particularly preferably in the range from 3 to 5 mm.

9. Kit according to any one of the preceding claims, wherein the diffusion stick (1) has a hollow core (5) along its axis and the diffusion stick (1) is a hollow cylinder having an (outer) diameter, a core diameter (inner diameter) and a wall thickness.

10. Kit according to any one of the preceding claims, wherein the kit additionally c) comprises a container (2) having at least one container opening (4).

11. Kit according to any one of the preceding claims, wherein the composition additionally contains a4) a surfactant.

12. Kit according to any one of the preceding claims, wherein the active substance is a fragrance.

13. Device (1) for releasing an active substance into the surroundings, produced from a kit according to any one of the preceding claims.

14. Method for producing a device (1) for releasing an active substance, comprising the following steps: i) producing or providing a kit according to any one of the preceding claims, ii) transferring all components of the composition into a container having at least one container opening (4), and optionally mixing all components, and iii) adding the diffusion sticks (3, 3', 3") through the container opening such that a portion of the respective diffusion sticks (3, 3', 3") is in contact with the composition and a portion of the respective diffusion sticks (3, 3', 3") extends out of the container through the container opening (4).

15. Use of diffusion sticks in devices (1) according to claim 13 for releasing an active substance.