WO2020125937A1

WO2020125937A1 - Dispenser for dispensing an active substance

Info

Publication number: WO2020125937A1
Application number: PCT/EP2018/085340
Authority: WO
Inventors: Jennifer Rube; Joern Wiedemann; Diana Müller; Dirk MÜLLER
Original assignee: Symrise Ag
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2020-06-25

Abstract

The invention relates to a dispenser for dispensing an active substance, particularly a fragrance. The invention also relates to a method for producing a dispenser for dispensing an active substance and to the use of the dispenser for fragrancing rooms, dishwashers, refrigerators, for masking or neutralizing unpleasant odors, for textile care, particularly for fragrancing and/or conditioning textiles, particularly during laundering, drying or chemical cleaning of textiles, for dispensing insect repellents, for releasing biocides, as a toilet freshener, or for releasing aromatic substances.

Description

Dispenser for dispensing an active ingredient

Field of the Invention

The present invention relates to a dispenser for dispensing an active ingredient, in particular a fragrance. In addition, the present invention relates to a method for producing the dispenser for dispensing an active ingredient and the use of the dispenser for scenting rooms, dishwashers, refrigerators, for masking or neutralizing an unpleasant smell, for textile care, in particular for scenting and / or conditioning textiles , in particular when washing, drying or chemical cleaning of textiles, for the delivery of insect repellents, for the release of biocides, as toilet scent washers, or for the release of aroma substances.

When washing and cleaning textiles, the consumer not only pursues the goal of washing, cleaning or maintaining the objects to be treated, but he also wishes that the treated objects after the treatment, for example after washing or drying , smell pleasant. For this reason in particular, most commercially available detergents and cleaning agents contain fragrances or fragrances.

Crucial for the perceptibility of a fragrance or fragrance is its volatility, whereby in addition to the nature of the functional groups and the structure of the chemical compound, the molecular weight also plays an important role. Most fragrances and fragrances have molecular weights of up to about 200 daltons. Due to the different volatility of fragrances, the smell of a perfume composed of several fragrances or fragrances changes during evaporation, whereby the odor impressions in "top note"("topnote"),"heart or middle note"("middlenote." ”Or“ body ”) and“ base note ”(“ end note ”or“ dry out ”). Since the smell is largely based on the intensity of the smell, the top note of a perfume is naturally by volatile compounds determined, while the base note consists largely of less volatile fragrances.

A basic method for the targeted release of fragrances or fragrances, e.g. from detergents, is their direct addition to the application formulation. The disadvantage of this process is the immediate release of the fragrance or fragrance from the formulation, which greatly reduces the shelf life of such formulations. Due to their slight volatility, when using conventional detergents or cleaning agents, only a small proportion of the fragrance used remains on the treated object after use, in particular after washing, which only leads to a short-term fragrance effect.

Often fragrances in the form of fragrance particles are either used as an integral part of a detergent or cleaning agent, or dosed into the washing drum directly at the start of a washing cycle in a separate form, for example in the form of a fragrance concentrate or as fragrance beads. By changing the wash liquor several times during a wash cycle, the majority of the dosed fragrance particles are dissolved or rinsed out with the wash liquor before the last rinse cycle, which means that the laundry cannot be adequately scented.

Other products for scenting textiles are, for example, towels in which a textile carrier is impregnated with fragrances, which are preferably used in the washing machine or dryer.

DE 2756953 A1 or EP 1 556 469 A1 describes a

Textile treatment composition described on the basis of a sublimable carrier. The active ingredients of the compression-molded textile treatment composition are melt-worked into a sublimable carrier, for example a sublimable hydrocarbon or a sublimable polar compound. Incorporation into a shaped body prevents excessively rapid volatilization and thus loss of the active ingredient contained. The effect of the active ingredient can thus be kept at a constant level for a long period of time.

In addition, devices based on membranes for delivering volatile substances such as fragrances or insect repellants to the immediate environment surrounding them are known. Such devices include a liquid reservoir, a liquid volatile agent, an evaporation membrane and a peelable cover layer. In devices of this type, the active substance, after activation, is evaporated to the surroundings by pulling off the covering layer through the evaporation membrane. Dispensing systems of this type are mainly used for scenting rooms, as so-called “air fresheners”.

WO 2016/199081 A1 describes a membrane fragrance dispenser for room scenting, in which the cover film is not removed completely but rather in areas from the evaporation membrane and only part of the evaporation surface is activated. The evaporation membrane is a microporous, vapor-permeable membrane that is formed from a polymer matrix.

[0010] WO 2017/131950 A1 discloses a dispenser system for dispensing liquid volatile substances such as insect repellants, fragrances or deodorants into the environment, the volatile active substances diffusing through a membrane. The membrane is made of polyethylene.

[0011] DE 20 2007 003 050 U1 describes an active substance container for dispensing liquid and / or gel active substances into the environment by means of diffusion. The membrane film used there is a composite polymer film, for example made of ethylene, ethylene vinyl acetate, ethyl acrylate or polyethylene.

[0012] Non-porous evaporative membranes are typically saturated by the liquid volatile substance prior to activation. Since non-porous membrane is driven by gradient concentration, if the volatile substance does not evaporate easily from the outside of the evaporation membrane, no further volatile liquid can be transported through the evaporation membrane. Furthermore is a membrane driven by gradient concentration depending on the size of the surface of the membrane that is in direct contact with the volatile substance. Therefore, when part of the volatile substance from the reservoir is used up, the maximum evaporation surface cannot be used. As the level of volatile substance decreases over time, the evaporation rate decreases proportionally. In addition, such non-porous membranes can be adversely affected by contact with many volatile substances. Such non-porous membranes therefore limit the manufacturer of such devices to a limited number of volatile substance formulations.

[0013] The use of porous evaporative membranes can overcome some of the shortcomings observed with the use of membranes driven by gradient concentrations. Porous membranes are generally driven by capillary action. These porous membranes enable a wider range of volatile substance formulations. In addition, they allow all of the liquid volatile substance to be depleted from the outer surface of the porous membrane with a uniform release of vapor.

Notwithstanding the advantages mentioned above, it was found that the use of membranes known in the prior art, for example non-porous polyethylene membranes, is not suitable for the evaporation of polar volatile substances, which is a selection of active ingredients, for example fragrances, limited.

In addition, the use of porous membranes in an evaporation dispenser leads to the accumulation of the liquid volatile active substances on the outer surface of the membrane, so that the membrane surface becomes wet and the active substances can drip onto the surrounding surfaces.

Depending on the composition of the active ingredients, for example perfume oil ingredients, these can deform or dissolve certain plastic materials. The result is the damage to the plastic membrane of the dispenser itself and the surrounding materials. In addition, certain perfume oil ingredients can also dissolve colors.

The escaping liquid also makes it uncomfortable to use the fland, and contact with the active ingredient, which can possibly lead to skin irritation, cannot be ruled out.

There is therefore still a need for a dispensing device which, in the case of objects to be treated, preferably textiles, on the one hand ensures an improved release of active substance, preferably an improved object scenting, and on the other hand prevents the accumulation of the volatile liquid active substances on the outer surface of the dispensing device , enables a more comfortable cultivation and avoids the dull contact during use.

It was therefore a primary object of the present invention to provide a dispenser for dispensing an active ingredient which overcomes the disadvantages described above of the dispensing devices known from the prior art.

In particular, it was an object of the present invention to provide a dispenser for dispensing an active ingredient which enables uniform diffusion for a wide range of active ingredients, in particular fragrances, regardless of their polarity, volatility and their molecular size, or with which in particular polar fragrances can also be used.

It was also an object of the present invention to provide a dispenser for object scenting, which prevents the accumulation of liquid volatile active substances on the outer surface of the dispensing device, enables easy flaming and avoids contact with the active substance. Summary of the invention

The present problems are solved by the subject matter of the independent claims.

[0023] In a first aspect, the present invention is therefore directed to a dispenser for dispensing a volatile active substance, in particular a fragrance, comprising:

(a) a container for receiving an active substance composition, which has a cavity, at least one container opening and a container edge;

(b) a film layer covering the container opening, the film layer comprising or consisting of:

(i) an inner microporous membrane layer facing the inside of the container and permeable to at least volatile polar active substances;

(ii) an outer impermeable sealing layer facing the outside of the container; and optional

(iii) an intermediate layer between the inner permeable microporous membrane layer and the outer impermeable sealing layer; and

(c) an active ingredient composition, the active ingredient composition comprising or consisting of:

(iv) at least one sublimable or water-soluble or water-dispersible carrier material, in particular adamantane;

(v) at least one volatile active ingredient, in particular a fragrance; and optional

(vi) at least one additive.

In a further aspect, the present invention is directed to a method for producing the dispenser for delivering an active ingredient.

Ultimately, the present invention is directed to the use of the dispenser for scenting rooms, dishwashers, refrigerators, for Masking or neutralizing an unpleasant smell, for textile care, in particular for scenting and / or conditioning textiles, in particular when washing, drying or dry cleaning textiles, for delivering insect repellants for pest control, in particular for pest control, for releasing biocides in areas with high air humidity, for example to prevent mold in the refrigerator, as a toilet scent rinser, or to release aromas, for example to aromatize water.

[0026] These and other aspects, features and advantages of the present invention will become apparent to those skilled in the art upon studying the following detailed description and claims. Each feature from one aspect of the invention can be used in any other aspect of the invention. Furthermore, it goes without saying that the examples contained herein describe and illustrate the invention, but are not intended to restrict the latter, and that in particular the present invention is not restricted to these examples.

Unless stated otherwise, all percentages are% by weight. Numerical examples given in the form "from x to y" include the values mentioned. If several preferred numerical ranges are specified in this format, it goes without saying that all ranges that result from the combination of the different endpoints are also covered.

The term “at least one” as used in the context of the present description refers to one or more, for example one, two, three, four, five, six, seven, eight, nine or more. In particular, this information relates to the type of compound / agent and not the absolute number of molecules. For example, the term “at least one fragrance” therefore means that at least one type of fragrance is recorded, but may also contain a mixture of two or more different types of fragrance. characters

Figure 1 shows a longitudinal section of a schematic representation of the

Dispensers according to the present invention.

Figure 2 shows a longitudinal section of a schematic representation of a preferred embodiment of the dispenser according to the present invention.

Figure 3 shows a longitudinal section of a schematic representation of a preferred embodiment of the dispenser according to the present invention.

Figure 4 is a longitudinal section of a schematic representation of the microporous membrane layer of the dispenser according to the present invention.

FIG. 5 is a photograph which illustrates the flow behavior of limes from the dispenser with and without a carrier material, 10 minutes after filling.

Figure 6 is a photo, which shows the flow behavior of limes from the dispenser without carrier material, 10 minutes after filling, (side view).

Figure 7 is a photo that illustrates the flow behavior of Lilial from the dispenser with and without a carrier material, 1 day after filling.

FIG. 8 is a photograph which illustrates the flow behavior of Lilial from the dispenser with and without a carrier material, 2 days after filling.

Figure 9 is a photo that illustrates the flow behavior of Lilial from the dispenser without carrier material, 2 days after filling. Figure 10 is a diagram showing the amount of fragrance on the textile in the scenting of laundry with the dispenser according to the invention in comparison with a fabric softener.

Figure 11 is a diagram showing the sensory evaluation of the intensity of the scent of laundry with the dispenser according to the invention in comparison with a fabric softener.

Figure 12 is a diagram showing the sensory evaluation of the intensity of the fragrance of laundry with the dispenser according to the invention in comparison with a fabric softener (market product).

Detailed description of the invention

[0041] In a first aspect, the present invention therefore relates to a dispenser 1 for dispensing a volatile active substance, in particular a fragrance, comprising:

(a) a container 2 for receiving an active substance composition, which has a flea space 3, at least one container opening 4 and a container edge 5;

(b) a film layer 7 covering the container opening 4, the film layer comprising or consisting of:

(i) an inner microporous membrane layer 8 facing the inside of the container and permeable to at least volatile polar active substances;

(ii) an outer impermeable sealing layer 9 facing the outside of the container; and optional

(iii) an intermediate layer 10 between the inner permeable microporous membrane layer 8 and the outer impermeable sealing layer 9; and

(iv) at least one sublimable or water-soluble or water-dispersible carrier material, in particular adamantane; (v) at least one volatile active ingredient, in particular a fragrance; and optional

(vi) at least one additive.

As was surprisingly found, the microporous membrane of the dispenser 1 according to the invention for dispensing an active ingredient enables uniform and rapid permeability of active ingredients, in particular fragrances, regardless of their polarity, volatility and molecular size, which means the use of a wider range of active ingredients and thus enables a larger purpose.

In addition, the presence of a carrier material in the dispenser 1 according to the invention for dispensing an active ingredient prevents accumulation of the liquid volatile active ingredients on the outer surface of the membrane, so that the membrane surface does not get wet and can drip onto the surrounding surfaces or sticky residues on the Membrane surface arise.

Depending on the composition of the active ingredients, for example the perfume oils, these or their ingredients can deform, dissolve or discolor certain plastic materials. For example, fragrances such as styrene or other strongly hydrophobic compounds can deform or dissolve plastics such as polyethylene (PE-LD), polyurethane, polypropylene, polystyrene, PVC. The result is damage to the plastic membrane of the dispenser itself and the surrounding materials. In addition, certain perfume oils can also dissolve colors.

At the same time, the handling of the dispenser 1 becomes more convenient, i.e. cleaner, and a lull contact with the active ingredient, which can possibly cause skin irritation, can be eliminated.

In the following, the components (a) to (c) of the dispenser 1 according to the invention according to the first aspect of the present invention and their preferred configurations with reference to the accompanying figures described and can be combined with one another - as far as technically meaningful.

To simplify the illustration, reference is made in the following both in the description and in the accompanying drawings exclusively to one embodiment of the dispenser 1 for dispensing a volatile active substance. However, it must be understood that simple shape adjustments can be made within the skill of a person skilled in the art.

Component (a) - container

As can be seen from FIGS. 1 to 3, the dispenser 1 for dispensing a volatile active substance according to the present invention comprises a container 2 which has a flute space 3 in which there is an active substance composition containing a volatile active substance or a volatile one Substance includes, located.

The term "volatile active substance" or "volatile substance" as used in the context of the present invention means an active substance or substance that is capable of operating at ambient temperature and pressure without additional energy to be converted or vaporized into a gaseous or vaporous form. The volatile active ingredient or substance may comprise an organic volatile material or comprise such volatile materials which comprise a solvent or comprise such volatile materials which are dispersed in a solvent. The volatile active ingredient or the volatile substance is typically in a liquid form, but can also be in solid form and can, of course, occur or be produced synthetically. In solid form, the volatile active substance or the volatile substance typically sublimes from the solid form to the vapor form in the absence of a liquid intermediate form. The volatile substance may optionally be combined or formulated with non-volatile materials such as a carrier (e.g. water and / or non-volatile solvents). The solid volatile substance can also be in the form of a semi-solid gel. Typically the volatile active substance or the volatile substance is present in a liquid form in the container of the dispenser 1 according to the invention.

The container 2 also has at least one container opening 4 and a container edge 5 formed in the periphery of the container opening 4. The container edge 5 surrounding the container opening 4 is designed as an edge. In a preferred embodiment, the container material extends as peripheral flat flange 6 on the container edge 5.

[0053] Furthermore, the container 2 has a film layer 7 covering the container opening 4.

Such containers are known from the prior art. Typical application examples are, for example, room deodorants, air fresheners, biocidal room deodorants, washing machine deodorants, tumble dryer deodorants, dishwasher deodorants, toilet deodorants, etc.

The container 2 can be made of any suitable material. For example, the container 2 can comprise cellulosic materials, metal foils, polymer materials or composites thereof. However, the container 2 must be resistant to the active ingredient composition contained in the container cavity 3, i.e. it must not consist of a material that is chemically broken down, softened or swollen by the active ingredient composition. Furthermore, the container 2 must be used in applications in which a higher temperature, e.g. of more than 40 ° C, as in use in dishwashers, washing machines, tumble dryers, etc., consist of a material that is temperature-resistant.

Preferably, the container 2 consists of a plastic composite film, for example of ethylene and / or ethyl acrylate and / or propylene and / or polyamide and / or ethyl acetate for products in which a higher temperature resistance is required, or from Barex ^R (a family the material belonging to acrylonitrile-methyl-acrylate copolymers (AMAB), which is chemically inert and is characterized by a excellent chemical resistance) and / or low density polyethylene (LDPE).

In a further preferred variant, the container 2 consists of a combination of an outer layer of material with good mechanical performance, such as PET, PVC, PP or another material known for this type of application, and an inner layer with a low melting point, such as PE. In addition, an intermediate layer 10 made of additional barrier material can also be provided in order to extend the shelf life of the product, for example a combination of a three-layer PET / EVOH / PE material.

Such plastic composite films usually have a thickness of 300 to 600 pm.

The concrete shape of the container 2 is largely arbitrary. The dispenser container 2 can have any geometric shape, for example the shape of a cube, a cuboid, a cone, a cylinder, a sphere, a hemisphere or an irregular geometric shape. A cube-shaped, square or spherical configuration of the container 2 is preferred. When the dispenser 1 is used in a washing machine or in a tumble dryer, it is preferred if the dispenser container 2 has a spherical shape. This has the advantage that the dispenser container 2 is not caught by edges or corners in the textiles to be treated.

The container 2 of the dispenser 1 according to the present invention is preferably produced by thermoforming one of the above-mentioned plastic materials to obtain a cavity 3 which is suitable for receiving an active ingredient composition. This is done, for example, in a deep-drawing process from a plastic film with a thickness of approximately 250 μm. The initially smooth film is stretched over a deep-drawing mold, which has the shape of the later container and is then shaped while heating to obtain a container 2. Appropriate methods and materials are known to the person skilled in the art. After manufacture, the container 2 has a container opening 4 and a container edge 5 encircling the container opening 4, which has an edge or on which the container material extends as a peripheral flat flange 6.

After the container 2 has been filled with the active substance composition, the container opening 4 is closed with a film layer 7. Here, the film layer 7 is arranged over the open cavity 3 of the container 2 and extends to the container edge 5, where it along the container opening 4 either with the edge of the container edge 5 (see FIG. 1) or with the flange 6 (see FIG. 2) is connected. The film layer 7 may be attached to the edge of the container rim 5 or to the flange 6 using any suitable adhesive material known in the art, provided that the adhesive penetrates sufficiently into the pores of the film layer 7, or is attached using known lamination techniques. The film layer 7 is preferably attached using hot-melt adhesives as are known in the prior art.

Alternatively, the microporous membrane layer 8 and the removable outer impermeable sealing layer 9 are arranged on the container edge 5 and firmly connected to the container edge 5. During this process, heat and pressure are applied to the periphery of the container rim 5 until the peripheral part of the microporous membrane layer 8 and the removable outer impermeable sealing layer 9 fuse with the container rim 5, thereby forming a seal which prevents any escape of the active substance to the outside .

Component (b) - film layer

As can further be seen from FIGS. 1 to 3, the dispenser 1 for dispensing a volatile active substance according to the present invention comprises a film layer 7 as a further main component. The film layer 7 closing the container opening 4 comprises or consists of:

an inner microporous membrane layer 8 facing the inside of the container and permeable to at least volatile polar active substances;

an outer impermeable sealing layer 9 facing the outside of the container; and optional

an intermediate layer 10 between the inner permeable microporous membrane layer 8 and the outer impermeable sealing layer 9;

The microporous membrane layer 8, which is permeable to at least volatile polar active substances and has a first surface and a second surface, is arranged above the container opening 4. The first surface of the microporous membrane layer 8 is preferably in direct contact with the active substance composition which is contained in the cavity 3 of the container 2.

The microporous membrane which is suitable for use in the dispenser 1 of the present invention is such a membrane, which is commercially available from the company PPG under the name “TESLIN” and its structure and composition in detail is described, for example, in US 4,861, 644, in particular column 1, line 1 to column 11, line 27, the cited disclosure of which becomes part of the present application by reference, and in US 2017/0000102 A1, in particular paragraph [0019] to Paragraph [0065], the cited disclosure of which is incorporated herein by reference.

A characteristic and surprising feature of the permeable microporous membrane layer 8 is that it is permeable to at least polar active substances. The term “permeable to at least polar active substances” means that the microporous membrane layer 8 is permeable for both polar active substances, in particular polar fragrances, and preferably for non-polar active substances, in particular non-polar fragrances, or mixtures thereof. In a preferred variant of the dispenser 1 according to the invention, the inner microporous membrane layer 8 which is permeable to at least polar active substances comprises:

a matrix of at least one water-insoluble thermoplastic organic polymer;

particles of a water-insoluble filler finely distributed in the matrix; and a network of connecting pores communicating within the matrix.

The connecting pores are distinguished by the fact that they pass through the polymer matrix.

The polymer matrix of the membrane consists of at least one water-insoluble thermoplastic organic polymer. The number and types of such polymers which are suitable for use as a matrix are large. In general, any substantially water-insoluble thermoplastic organic polymer that can be extruded, calendered, pressed, or rolled into a film, sheet, strip, or web can be used. The polymer can be a single polymer or it can be a blend of polymers. The polymers can be flomopolymers, copolymers, random copolymers, block copolymers, graft copolymers, atactic polymers, isotactic polymers, syndiotactic polymers, linear polymers or branched polymers. When blends of polymers are used, the blend can be homogeneous or can comprise two or more polymeric phases.

[0072] Examples of classes of suitable substantially water-insoluble thermoplastic organic polymers include thermoplastic polyolefins, halogen-substituted polyolefins, polyesters, polyamides, polyurethanes, polyureas, polyvinyl halides, polyvinylidene halides, polystyrenes, polyvinyl esters, polycarbonates, polyethers, polysulfides, polyimides, polyoxilanes, polysilanes, polysilanes, polysilanes, polysilanes, polysilanes, polysilanes, polysilanes, Polyacrylates and polymethacrylates.

Flybrid classes from which the water-insoluble thermoplastic organic polymers can be selected are, for example, thermoplastic Polyurethane ureas, polyester amides, polysilane siloxanes and polyether esters. Other examples of suitable substantially water-insoluble thermoplastic organic polymers include thermoplastic high density polyethylene, low density polyethylene, ultra high molecular weight polyethylene, polypropylene, polyvinyl chloride, polytetrafluoroethylene, copolymers of ethylene and acrylic acid, copolymers of ethylene and methacrylic acid, polyvinylidene chloride, copolymers of vinylidene chloride and vinyl acetate, Copolymers of vinylidene chloride and vinyl chloride, copolymers of ethylene and propylene, copolymers of ethylene and butene, polyvinyl acetate, polystyrene, poly-w-aminoundecanoic acid, polyhexamethylene adipamide, poly-s-caprolactam and poly (methyl methacrylate. The list of these classes and examples of essentially water-insoluble Thermoplastic organic polymers are not exhaustive and are for illustration only.

Substantially water-insoluble thermoplastic organic polymers may particularly include, for example, polyvinyl chloride, copolymers of vinyl chloride, or mixtures thereof. For example, the water-insoluble thermoplastic organic polymer may include an ultra high molecular weight polyolefin selected from ultra high molecular weight polyolefin (e.g., substantially linear ultra high molecular weight polyolefin) having an intrinsic viscosity of at least 10 deciliters / gram, or ultra high molecular weight polypropylene ( e.g. substantially linear ultra high molecular weight polypropylene) with an intrinsic viscosity of at least 6 deciliters / gram, or a mixture thereof. In a preferred example, the polymer matrix comprises at least one polyolefin polymer.

The water-insoluble thermoplastic organic polymer is preferably ultra high molecular weight polyethylene (UHMWPE) (e.g. linear ultra high molecular weight polyethylene) with an intrinsic viscosity of at least 18 deciliters / gram).

As indicated previously, the intrinsic viscosity of the UHMWPE is at least about 10 deciliters / gram. The intrinsic viscosity is usually at least about 14 deciliters / gram. The intrinsic viscosity is often at least about 18 deciliters / gram. In many cases, the intrinsic viscosity is at least about 19 deciliters / gram. Although there is no particular limitation on the upper limit of the intrinsic viscosity, the intrinsic viscosity is often in the range of about 10 to about 39 deciliters / gram. The intrinsic viscosity is often in the range of about 14 to about 39 deciliters / gram. In most cases, the intrinsic viscosity ranges from about 18 to about 39 deciliters / gram. An intrinsic viscosity in the range of about 18 to about 32 deciliters / gram is preferred.

The water-insoluble thermoplastic organic polymer is preferably ultra high molecular weight polypropylene (UHMWPP) (e.g., ultra high molecular weight linear polypropylene) with an intrinsic viscosity of at least 6 deciliters / gram).

In a further preferred embodiment, the polymer matrix consists essentially of linear polyolefin, which is essentially ultra-high molecular weight polyethylene (UHMWPE), which has an intrinsic viscosity of at least 18 deciliters / gram, is ultra-high molecular weight polypropylene (UHMWPE), which has an intrinsic viscosity of at least 6 deciliters / gram, or a mixture thereof.

In an even more preferred variant, the at least one water-insoluble thermoplastic organic polymer is selected from polyethylene, polypropylene or mixtures thereof, and is in particular selected from polyethylene with an intrinsic viscosity in the range from 18 to 39 deciliters / g, measured according to ASTM D 4020-81, and polypropylene with an intrinsic viscosity in the range from 6 to 18 deciliters / g, measured according to ASTM D 4020-81, or mixtures thereof.

[0080] In another exemplary and preferred embodiment, the matrix comprises a blend of substantially linear, ultra-high density polyethylene Molecular weight with an intrinsic viscosity of at least 10 deciliters / gram and lower molecular weight polyethylene with a melt flow index of less than 50 grams / 10 minutes (according to ASTM D 1238-86 condition E) and a melt flow index of at least 0.1 gram / 10 minutes ( according to ASTM D 1238-86 condition F). The nominal molecular weight of the low molecular weight polyethylene (LMWPE) is lower than that of the ultra high molecular weight polyethylene (UHMWPE). LMWPE is thermoplastic and many different types are known. A classification method is density, expressed in grams / cubic centimeter, according to ASTM D 1248-84:

Low density polyethylene (LDPE) 0.910 to 0.925

Medium density polyethylene (MDPE) 0.926 to 0.940

High density polyethylene (HDPE) 0.941 to 0.965.

[0081] Any or all of these polyethylenes can be used as LMWPE in the present invention. HDPE can be used for some applications because it usually tends to be more linear than MDPE or LDPE.

Sufficient UHMWPE and LMWPE should be present in the polymer matrix in order to impart their properties to the microporous material. One or more other thermoplastic organic polymers may also be present in the matrix as long as their presence does not adversely affect the properties of the microporous material. The other thermoplastic polymer can be another thermoplastic polymer or it can be more than another thermoplastic polymer. The amount of other thermoplastic polymer that can be present depends on the type of such polymer. Examples of thermoplastic organic polymers that may be present include polytetrafluoroethylene, polypropylene, copolymers of ethylene and propylene, copolymers of ethylene and acrylic acid and copolymers of ethylene and methacrylic acid. If desired, all or part of the carboxyl groups of carboxyl-containing copolymers can be neutralized with sodium, zinc or the like. In most cases, the UHMWPE and the LMWPE together make up at least about 65% by weight of the polymer matrix. The UHMWPE and the LMWPE preferably together make up at least about 85% by weight of the polymer matrix. Preferably, the other thermoplastic organic polymer is essentially absent, so that the UHMWPE and the LMWPE together make up essentially 100% by weight of the polymer matrix.

The UHMWPE can make up at least 1% by weight of the polymer matrix, and the UHMWPE and LMWPE together form essentially 100% by weight of the polymer of the polymer matrix. When the UHMWPE and LMWPE together make up 100% by weight of the polymer matrix of the microporous membrane layer, the UHMWPE can make up more than or equal to 40% by weight of the polymer matrix. For example, the UHMWPE can make up more than or equal to 45% by weight of the polymer matrix. For example, the UHMWPE can make up more than or equal to 48% by weight of the polymer matrix. For example, the UHMWPE can make up more than or equal to 50% by weight of the polymer matrix. For example, the UHMWPE can make up more than or equal to 55% by weight of the polymer matrix. The UHMWPE can also make up less than or equal to 99% by weight of the polymer matrix. For example, the UHMWPE can make up less than or equal to 80% by weight of the polymer matrix. For example, the UHMWPE can make up less than or equal to 70% by weight of the polymer matrix. For example, the UHMWPE can make up less than or equal to 65% by weight of the polymer matrix. For example, the UHMWPE can make up less than or equal to 60% by weight of the polymer matrix. The amount of UHMWPE comprising the polymer of the matrix can be between any of these values, including the values given.

Likewise, when the UHMWPE and LMWPE make up 100% by weight of the polymer of the polymer matrix of the microporous material, the LMWPE can make up more than or equal to 1% by weight of the polymer of the polymer matrix. For example, the LMWPE can make up more than or equal to 5% by weight of the polymer matrix. For example, the LMWPE can make up more than or equal to 10% by weight of the polymer matrix. For example, the LMWPE may be more than or equal to 15 Make up% by weight of the polymer matrix. For example, the LMWPE can make up more than or equal to 20% by weight of the polymer matrix. For example, the LMWPE can make up more than or equal to 25% by weight of the polymer matrix. For example, the LMWPE can make up more than or equal to 30% by weight of the polymer matrix. For example, the LMWPE can make up more than or equal to 35% by weight of the polymer matrix.

For example, the LMWPE can make up more than or equal to 40% by weight of the polymer matrix. For example, the LMWPE can make up more than or equal to 45% by weight of the polymer matrix. For example, the LMWPE can make up more than or equal to 50% by weight of the polymer matrix. For example, the LMWPE can make up more than or equal to 55% by weight of the polymer matrix. In addition, the LMWPE can make up less than or equal to 70% by weight of the polymer matrix. For example, the LMWPE can make up less than or equal to 65% by weight of the polymer matrix. For example, the LMWPE can make up less than or equal to 60% by weight of the polymer matrix. For example, the LMWPE can make up less than or equal to 55% by weight of the polymer matrix. For example, the LMWPE can make up less than or equal to 50% by weight of the polymer matrix. For example, the LMWPE can make up less than or equal to 45% by weight of the polymer matrix. The level of the LMWPE can lie between any of these values, including the mentioned values.

[0087] Each of the microporous materials of the present invention described above may comprise, as LMWPE, a high density polyethylene.

The microporous membrane layer 8, which is permeable to at least polar active substances, moreover comprises a water-insoluble particulate filler which is finely distributed in the polymer matrix.

The water-insoluble particulate filler may contain an organic particulate and / or an inorganic particulate. The particulate filler is typically not colored, for example the particulate filler is a white or off-white particulate Filler such as a silica (clay) or particulate material.

The finely divided water-insoluble filler particles can make up 20 to 90% by weight of the microporous membrane layer. Such filler particles can preferably make up 30 to 90% by weight of the microporous membrane layer. Such filler particles can even more preferably constitute 40 to 90% by weight of the microporous membrane layer. Most preferably, such filler particles can make up 40 to 85% by weight of the microporous membrane layer. For example, such filler particles can make up 50 to 90% by weight of the microporous membrane layer. For example, such filler particles can make up 60% to 90% by weight of the microporous membrane layer.

At least about 90% by weight of the water-insoluble filler particles used in the formation of the microporous membrane layer have a particle size in the range of 0.5 to about 200 micrometers, such as about 1 to 100 micrometers, as measured by laser diffraction. Typically, at least 90% by weight of the particulate filler has a particle size in the range of 10 to 30 microns. The sizes of the filler agglomerates can be reduced during processing of the ingredients used to make the microporous membrane layer. Accordingly, the distribution of the total particle sizes in the microporous membrane layer can be less than in the filler itself.

Non-limiting examples of suitable organic and inorganic particulate materials that can be used in the microporous membrane layer of the present invention include those described in U.S. Patent No. 6,387,519 B1, column 9, line 4, to column 13, Line 62, are described, the cited disclosure of which becomes part of the present application by reference.

For example, the water-insoluble particulate filler may comprise silica-containing (siliceous) materials. Non-limiting examples of silica-containing fillers used to make the microporous Membrane layer can be used include silicon dioxide, mica, montmorillonite, kaolinite, nanotones (nanoclays), such as cloisite, talc, diatomaceous earth, vermiculite, natural and synthetic zeolites, cement, calcium silicate, aluminum silicate, sodium aluminum silicate, aluminum polysilicate,

Alumina silica gels, glass particles and mixtures thereof. In addition to the silica-containing fillers, other finely divided, water-insoluble fillers can also be used, if necessary. Non-limiting examples of such optional particulate fillers include carbon black, coal, graphite, titanium oxide, iron oxide, copper oxide, zinc oxide, antimony oxide, zirconium oxide, magnesium oxide, aluminum oxide, molybdenum disulfide, zinc sulfide, barium sulfate, strontium sulfate, calcium carbonate and magnesium carbonate. For example, the silica-containing filler may comprise silica and one of the above-mentioned clays. Non-limiting examples of silicas include precipitated silica, silica gel, fumed silica, and combinations thereof.

For the purposes of the present invention, the finely divided, particulate, water-insoluble, silica-containing (siliceous) filler can be at least 50% by weight (e.g. at least 65% by weight or at least 75% by weight) or at least Make up 90% by weight of the water-insoluble filler. Preferably, the silica-containing filler may comprise 50 to 90 percent by weight (e.g., 60 to 80 percent by weight) of the particulate filler material, or the silica-containing filler may comprise all of the water-insoluble particulate filler material.

[0095] The particulate filler (e.g., the silica-containing filler) typically has a large surface area so that the filler can carry a large portion of the plasticizer composition used to make the microporous membrane layer of the present invention. The filler particles are substantially water-insoluble and are also substantially insoluble in any organic processing liquid used to make the microporous membrane layer. This can facilitate retention of the particulate filler within the microporous membrane layer. The microporous membrane layer 8 of the present invention may also contain minor amounts of other materials (e.g. less than or equal to 5% by weight based on the total weight of the microporous membrane layer) used in processing, such as lubricants , Processing plasticizer, organic extraction liquid, water and the like.

Other materials that are introduced for certain purposes, such as thermal stability, resistance to ultraviolet radiation and dimensional stability, may optionally be present in small amounts (e.g. less than or equal to 15% by weight based on the total weight the membrane layer) be present in the microporous membrane layer. Examples of such other materials include, but are not limited to, antioxidants, ultraviolet light absorbers, reinforcing fibers, and the like.

In addition, the microporous membrane layer 8 also comprises a network of pores interconnected within the matrix, which pass through the polymer matrix and communicate with one another through the entire microporous membrane layer 8.

In the microporous membrane layer, the pores typically make up 30 to 95% by volume, based on the total volume of the microporous membrane layer. The pores can preferably make up 50 to 75% by volume of the microporous membrane layer, based on the total volume of the microporous membrane layer.

In general, the volume average diameter of the pores of the microporous membrane layer on a coating-free basis is at least 0.02 microns, typically at least 0.04 microns, and more typically at least 0.05 microns. On the same basis, the volume average diameter of the pores of the microporous membrane layer is typically also less than or equal to 0.5 micron, more typically less than or equal to 0.3 micron and further typically less than or equal to 0.25 microns. On this basis, the volume-average diameter of the pores can lie between any of these values, including the stated values. For example, the volume average diameter of the pores of the microporous material can range from 0.02 to 0.5 microns or from 0.04 to 0.3 microns or from 0.05 to 0.25 microns, each including the values given .

The microporous membrane layer 8 can have a density of at least 0.7 g / cm ³ or preferably at least 0.8 g / cm ³ . As used herein, the density of the microporous material is determined by measuring the weight and volume of a sample of the microporous membrane layer. The upper limit of the density of the microporous membrane layer can be wide, provided that it has an acceptable permeability to ensure a sufficient evaporation rate for the volatile agent. The density of the microporous membrane layer is preferably less than or equal to 1.5 g / cm ³ or less than or equal to 1.0 g / cm ³ . The density of the microporous membrane layer 8 can be between any of the values given above, including the values given. For example, the microporous membrane layer 8 can have a density of 0.7 g / cm ³ to 1.5 g / cm ³ , such as from 0.8 g / cm ³ to 1.2 g / cm ³ , including the stated values.

Numerous methods known in the prior art can be used to produce the microporous membrane layer 8 used according to the invention. For example, the microporous membrane layer 8 of the present invention can be made by mixing together filler particles, thermoplastic organic polymer powder, processing plasticizer and small amounts of lubricant and antioxidant until a substantially uniform mixture is obtained. The weight ratio of particulate filler to polymer powder used to form the mixture is essentially the same as that of the microporous material to be made. The mixture, along with additional processing plasticizer, is typically introduced into the heated barrel of a screw extruder. A slot die is attached to the end of the extruder. A continuous film, which is formed by the nozzle, is without drawing forwarded to a pair of heated calender rolls, which cooperate to form a continuous sheet of less thickness than the continuous sheet emerging from the die.

The amount of processing plasticizer present in the film at this point can vary widely. For example, the amount of processing plasticizer present in the film prior to extraction, as described hereinafter, may be greater than or equal to 30% by weight of the film, such as greater than or equal to 40% by weight. or greater than or equal to 45% by weight of the film before extraction. In addition, the amount of processing plasticizer present in the film prior to extraction can be less than or equal to 70% by weight of the film, such as less than or equal to 65% by weight or less than or equal to 60% by weight. % or less than or equal to 55% by weight of the film before extraction. The amount of processing plasticizer present in the continuous film at this point in the pre-extraction process can be between any of these values, including the values given.

The web from the calender is then passed to a first extraction zone where the processing plasticizer is removed by extraction with an organic liquid which is a good solvent for the processing plasticizer, a poor solvent for the organic polymer and more volatile than the processing plasticizer. Usually, but not necessarily, both the processing plasticizer and the organic extraction liquid are immiscible with water. The film then reaches a second extraction zone, in which the remaining organic extraction liquid is removed by steam and / or water. The film is then passed through a circulating air dryer to largely remove residual water and remaining organic extraction liquid. The endless web, which is a microporous membrane layer 8, is guided from the dryer to a winding roll.

Processing plasticizers useful in the manufacture of the microporous membrane layer according to the present invention will become more detailed in U.S. Patent No. 5,326,391, column 10, lines 26 through 50, the disclosure of which is incorporated herein by reference.

[0106] There are many organic extraction liquids that can be used to make the microporous material of the present invention. Examples of other suitable organic extraction liquids include those described in U.S. Patent No. 5,326,391, column 10, lines 51 through 57, the disclosure of which is incorporated herein by reference.

The extraction liquid composition may include halogenated hydrocarbons such as chlorinated hydrocarbons and / or fluorinated hydrocarbons. Nonlimiting examples of halogenated hydrocarbons suitable as the extraction liquid composition for use in making the microporous membrane layer according to the present invention may include one or more azeotropes of halogenated hydrocarbons selected from trans-1, 2-dichloroethylene, 1, 1, 1 , 2,2,3,4,5,5,5-decafluoropheican and / or 1, 1, 1, 3,3-pentafluorobutane.

The residual level of processing plasticizer in the microporous membrane layer according to the present invention is usually less than 10% by weight based on the total weight of the microporous membrane layer, and this amount can be further increased by additional extractions using the same or a different organic extraction be reduced. The residual content of processing plasticizer is often less than 5% by weight, based on the total weight of the microporous membrane layer, and this amount can be reduced further by additional extractions.

The microporous membrane layer 8, which is produced by the methods described above, can optionally be stretched. The stretching of the microporous membrane layer typically leads to both an increase in the Cavity volume of the material as well as to form areas of increased or increased molecular orientation. As is known in the art, many of the physical properties of molecularly oriented thermoplastic organic polymer, including tensile strength, tensile modulus, elastic modulus, and others, differ (e.g., significantly) from those of the corresponding thermoplastic organic polymer with little or no molecular orientation. Stretching is typically performed after substantial removal of the processing plasticizer, as described above.

The structure of the microporous membrane layer 8 described above is shown schematically in FIG. 4.

The above-described microporous membrane layer 8, which is used in the dispenser 1 according to the present invention, is characterized in that it is microporous and permeable. The polyolefin matrix and the inclusion of fillers containing silicon dioxide give the microporous membrane layer 8 both a hydrophilic and a hydrophobic surface. This condition contributes to the fact that the microporous membrane - in comparison to non-porous or porous membrane layers from the prior art - is almost permeable to everyone, i.e. both polar and non-polar active substances, in particular polar and non-polar fragrances and regardless of their volatility or molecular size.

The second surface of the microporous membrane layer 8 is in direct contact with a removable outer impermeable sealing layer 9 of the film layer 7.

[0113] In order to seal the microporous membrane layer 8 for storage, transport and sale, the microporous membrane layer 8 is usually provided with an impermeable sealing layer 9.

This sealing layer 9 forms a gas and moisture barrier, so that no ingredients or active ingredients can diffuse from the inside of the container 2 of the dispenser 1 through the microporous membrane layer 8 to the outside. This will prevents loss of active ingredients. At the same time, they ensure that no moisture or oxygen can diffuse into the interior via the microporous membrane layer 8. This prevents the active substances from being adversely affected, for example by being broken down by oxidation. Such a sealing layer 9 preferably consists of a metal foil, a polymer foil and combinations thereof. An aluminum foil is preferred as the metal foil. Polymer films which are preferably used include, but are not limited to, polyethylene film, polypropylene film, polyethylene terephthalate film, polyester film, polyurethane film, polyester urethane film or polyvinyl alcohol film or composites of the aforementioned films. The sealing layer 9 can also comprise a metallized polymer film either alone or in combination with a metal foil layer, a polymer film layer or both.

The microporous membrane layer 8 and the outer impermeable sealing layer 9 can be connected to one another over the entire surface. The microporous membrane layer 8 and the outer impermeable sealing layer 9 are advantageously connected to one another only in their edge region in such a way that, on the one hand, sealing is effected and no active substances can escape from the container to the outside and, on the other hand, the outer impermeable sealing layer 9 is easily peeled off when the Dispensers 1 is guaranteed.

[0116] During the dispensing process of the dispenser 1 according to the present invention, the microporous membrane layer 8 and the removable outer impermeable sealing layer 9 are arranged on the container edge 5 and firmly connected to the container edge 5. With this priority, heat and pressure are applied to the periphery of the container rim 5 until the circumferential part of the microporous membrane layer 8 and the removable outer impermeable sealing layer 9 fuse with the container rim 5, thereby forming a seal which prevents any escape of the active substance from the outside prevented. In cases in which the sealing layer 9 adheres poorly to the microporous membrane layer 8 or cannot be connected directly to the microporous membrane layer 8, the film layer 7 preferably comprises an intermediate layer 10 which is between the inner permeable membrane layer 8 and the outer permeable Sealing layer 9 is arranged. The intermediate layer 10 is preferably an adhesive layer which firmly connects the inner permeable membrane layer 8 and the outer permeable sealing layer 9 to one another in order to ensure a hermetic seal. The intermediate layer 10 is not used up over the entire surface of the inner permeable membrane layer 8, but is only in contact with the edge section of the microporous membrane layer 8, which corresponds to the area in which the microporous membrane layer 8 is connected to the container edge 5. The intermediate layer 10 is preferably applied in the edge region of the microporous membrane layer 8, in which the microporous membrane layer 8 is fastened to the flange 6 of the container.

The adhesive may comprise one of the known adhesives, provided that the adhesive provides sufficient tack to keep the dispenser device sealed until activated by the consumer while ensuring the removability of the impervious sealing layer 9. In a particular embodiment, the adhesive comprises a pressure-sensitive adhesive, such as, for example, rubber-based adhesives, block copolymer adhesives, polyisobutene-based adhesives, acrylic-based adhesives, silicone-based adhesives, polyurethane-based adhesives, vinyl-based adhesives and mixtures thereof.

When using the dispenser 1 according to the present invention, the outer impermeable sealing layer 9 is peeled off from the microporous membrane layer 8, which optionally comprises a tab pull, for example on the flange section 6, in order to facilitate the removal, whereby the microporous membrane layer 8 is exposed, to activate the release or evaporation release of the volatile active ingredient. Component (c) - active ingredient composition

As a further constituent essential to the invention, the dispenser 1 according to the first aspect of the present invention contains an active substance composition.

The first main component comprises the active ingredient composition or the active ingredient composition consists of at least one sublimable or water-soluble or water-dispersible carrier material into which the liquid or solid active ingredient, for example a fragrance, is incorporated and which is contained in the container cavity 3 of the dispenser 1. The carrier material also serves to fix the liquid or solid active substance as long as the dispenser 1 is not activated according to the present invention.

The sublimable carrier material which is used in the dispenser 1 according to the first aspect of the present invention is selected from the group of carrier materials which consists of sublimable hydrocarbons, in particular adamantane, endotrimethylene norbornane, cyclododecane, trimethylnorbornane, norbornane, naphthalene; sublimable polar compounds, especially dimethyl fumarate, benzoic acid, trioxymethylene, coumarin, p-dichlorobenzene, e-caprolactam, 1,4-cyclohexanediol, phthalide, lactide, triisopropyltrioxane; saturated and unsaturated and optionally substituted alicyclic hydrocarbons, in particular trimethylene norbornane; saturated and unsaturated and optionally substituted cyclic hydrocarbons, in particular cyclodecane, tetrahydrodicyclopentadiene, camphor; and aliphatic and aromatic acids, especially dimethyl fumarate, benzoic acid and trioxane; and mixtures of the aforementioned compounds.

Preferred sublimable carrier materials include those which have little odor or no perceptible odor or fragrance at their sublimation temperatures, so as not to undesirably mask an active ingredient, in particular a fragrance, or an undesirable bad odor, for example in the treatment of textiles, to rent. Adamantane is particularly preferred among the sublimable carrier materials mentioned above. Adamantane, is a cycloalkane and the simplest diamondoid. Despite their high melting point, the colorless crystals sublimate at room temperature, which is due to the spherically symmetrical structure of the molecules. Adamantane is largely resistant to oxidizing agents. Adamantane is very stable and generally not very reactive. Compared to other sublimable hydrocarbons, its shape retention or shape retention is good after molding. It can also hold a relatively large amount of drug in the spaces between its crystalline particles. Therefore, as a sublimable carrier material for use in the dispenser 1 according to the present invention, adamantane is a preferred embodiment of the invention.

[0126] The sublimable carrier material is compatible with the active substance, in particular the fragrance, which is used in the dispenser 1.

When multiple sublimable carrier materials are used in the active ingredient composition, each of the sublimable carrier materials is desirably non-reactive in the presence of the other sublimable materials used. Also desirably, the sublimation temperatures of each of the sublimable materials do not differ from those of the other sublimable materials by no more than 45 ° C, preferably no more than 40 ° C, more preferably no more than 35 ° C, and most preferably by not more than 25 ° C.

The sublimable carrier materials used according to the invention, which are preferably used, have a sublimation temperature in the range from 20 ° C. to 90 ° C., which corresponds to the operating range of a washing machine or a clothes dryer. According to a preferred embodiment, the sublimable carrier material has a sublimation temperature in the range from 30 ° C. to 80 ° C., more preferably in the range from 40 ° C. to 70 ° C. and most preferably in the range from 50 to 60 ° C. The amount of sublimable carrier material present in the active ingredient composition can be any effective amount. It is preferably 35 to 99% by weight, particularly preferably 40 to 95% by weight and even more preferably 45 to 90, for example 50 to 80% by weight or 55 to 75% by weight, based on the total weight of the Drug composition.

The sublimable carrier materials have the advantage that they do not leave an immediately visible residue, for example in the treatment of textiles.

In addition, the sublimable carrier material shows how much active ingredient is still in the dispenser 1.

[0132] In an alternative embodiment of the active substance composition, the first main component is at least one water-soluble or water-dispersible carrier material.

[0133] "Water soluble" as used herein means a solubility in water at 20 ° C of at least 1 g / l, preferably at least 10 g / l, more preferably at least 50 g / l.

[0134] "Water dispersible" as used herein means that the carrier polymer can be dispersed in water at a temperature of 20 ° C by known methods.

In various preferred embodiments, the at least one carrier polymer is distinguished by the fact that it has a melting point of from 48 ° C. to 300 ° C., preferably from 48 ° C. to 120 ° C.

In various preferred embodiments, the at least one carrier polymer is selected from polyalkylene glycols. Suitable in the context of the present invention are those polyalkylene glycols which have an average molecular weight (Mn) of> 1000 g / mol, in particular> 1500 g / mol, preferably an average molecular weight between 3,000 and 15,000, more preferably an average molecular weight between 4,000 and 13,000, more preferably have an average molecular weight between 4,000 and 6,000, 6,000 and 8,000 or 9,000 and 12,000 and particularly preferably of about 4,000 or about 6,000 g / mol.

If the term "average molecular weight of polyalkylene glycols" is used in the context of this application, this information relates in each case to the weight-average molecular weights (Mn), which are calculated from the OH number measured in accordance with DIN 53240-1 (for example version 2013 ) result.

According to the present invention, those polyalkyl glycols are particularly suitable which have a melting point between 40 ° C. and 90 ° C., in particular in the range from 45 ° C. to 70 ° C.

Examples of polyalkylene glycols that are useful in the context of the present invention are polypropylene glycol and polyethylene glycol.

[0141] According to some embodiments, the at least one carrier material is preferably polyethylene glycol.

[0142] In some embodiments, the at least one carrier polymer is a polyethylene glycol with an average molecular weight of> 1500 g / mol, preferably an average molecular weight between 3000 and 15000, more preferably with an average molecular weight between 4000 and 13000, more preferably have an average molecular weight between 4000 and 6000, 6000 and 8000 or 9000 and 12000 and particularly preferably of about 4000 or about 6000 g / mol.

In some embodiments, such a polyethylene glycol is distinguished by a melting point in the range from 45 ° C. to 70 ° C., preferably 50 ° C. to 65 ° C., more preferably 50 ° C to 60 ° C. The term "about" or "approximately" as used herein in connection with a numerical value means the numerical value ± 10%, preferably ± 5%. A molecular weight of about 6000 g / mol thus means 5400 - 6600 g / mol, preferably 5700 - 6300 g / mol.

In various preferred embodiments, the at least one carrier material is used in an amount such that the resulting active compound composition is 35 to 99% by weight, preferably 40 to 95% by weight and even more preferably 45 to 90% by weight, for example 50 to 80 wt .-% or 55 to 75 wt .-%, based on the total weight of the active ingredient composition.

The second main component comprises the active ingredient composition or the active ingredient composition consists of at least one volatile active ingredient.

The term “volatile active substance” or “volatile substance” as used in the context of the present invention means an active substance or substance that is capable of operating at ambient temperature and pressure without additional energy to be converted or vaporized into a gaseous or vaporous form. The volatile active ingredient or substance may comprise an organic volatile material or may comprise such volatile materials which comprise a solvent or comprise volatile materials which are dispersed in a solvent. The volatile active ingredient or the volatile substance is typically in a liquid form, but can also be in solid form and can, of course, occur or be produced synthetically. In solid form, the volatile active substance or the volatile substance typically sublimes from the solid form to the vapor form in the absence of a liquid intermediate form. The volatile substance may optionally be combined or formulated with non-volatile materials such as a carrier (e.g. water and / or non-volatile solvents). The solid volatile substance can also be in the form of a semi-solid gel. The volatile active substance or the volatile substance is typically present in a liquid form in the container 2 of the dispenser 1 according to the invention. The at least one active ingredient, in particular the at least one fragrance, is finely distributed or finely dispersed in the carrier material of the active ingredient composition.

The release of the active ingredient from the container 2 after activation of the dispenser 1, i.e. after peeling off the outer impermeable sealing layer 9 from the permeable microporous membrane layer 8, one takes place together with the sublimable carrier material on the one hand by heat and / or on the other hand by a concentration gradient on the microporous membrane layer. At higher temperatures there is a faster evaporation of the active ingredients or a faster sublimation of the carrier material.

Such volatile substances which can be dispensed by means of the dispenser 1 according to the present invention include fragrances, volatile substances for masking or neutralizing an unpleasant odor, compounds with a textile-softening effect, impregnating agents, water-repellent substances, insecticides, in particular repellents , Biocides, bleaches, pearlescent agents, skin care compounds, flavorings or mixtures of the above-mentioned active ingredients.

The at least one active ingredient that is used in the active ingredient composition of the dispenser according to the invention is preferably an insecticide. An insecticide is a pesticide used to kill, repel, or inhibit insects and their stages of development. This includes various natural and synthetic agents, so-called "repellents", which are applied to the skin or clothing to prevent insects. A “repellent” is an active ingredient that is usually perceived by an organism via the sense of smell and which scares them off without killing them. The repellents preferably used according to the invention are preferably selected from the group consisting of N, N-diethyl-m-toluamide, 1, 2-pentanediol, icaridine (picaridine), N-butylacetanilide, di-n-propylisocinchomeronate, indalone, sigillins, SS220, 2-butyl-2-ethyl-1, 3-propanediol or ethylbutyl acetylaminopropionate. In a preferred embodiment, the at least one active ingredient is a fragrance.

[0152] A fragrance is a chemical substance that stimulates the sense of smell. In order to stimulate the sense of smell, the chemical substance should be at least partially dispersible in the air, i.e. the fragrance should be at least slightly volatile at 25 ° C. If the fragrance is very volatile, the intensity of the smell will quickly fade away. With a lower volatility, however, the odor impression is more sustainable, i.e. it doesn't go away so quickly.

In one embodiment, the fragrance therefore has a boiling point which is in the range from 25 ° C. to 400 ° C., preferably from 50 ° C. to 380 ° C., more preferably from 75 ° C. to 350 ° C., in particular from 100 ° C to 330 ° C. Overall, a chemical substance should not exceed a certain molecular mass in order to act as a fragrance, since the required volatility can no longer be ensured if the molecular mass is too high. In one embodiment, the fragrance has a molecular weight of 40 to 700 g / mol, more preferably 60 to 400 g / mol.

The smell of a fragrance is perceived by most people as pleasant and often corresponds to the smell of, for example, flowers, fruits, spices, bark, resin, leaves. Grasses, mosses and roots. For example, fragrances can also be used to mask unpleasant smells or to provide a non-smelling substance with a desired smell. Individual fragrance compounds, e.g. the synthetic products of the ester, ether, aldehyde, ketone, alcohol and hydrocarbon type are used.

Fragrance compounds of the aldehyde type are, for example, adoxal (2,6,10-trimethyl-9-undecenal), anisaldehyde (4-methoxybenzaldehyde), cymal (3- (4-isopropylphenyl) -2-methylpropanal), ethylvanillin , Florhydral (3- (3-isopropylphenyl) butanal), Helional (3- (3,4-Methylenedioxyphenyl) -2-methylpropanal), Heliotropin, Hydroxycitronellal, lauraldehyde, lyral (3- and 4- (4-hydroxy-4-methylpentyl) -3-cyclohexen-1-carboxaldehyde), methylnonylacetaldehyde, lilial (3- (4-tert-butylphenyl) -2-methylpropanal), phenylacetaldehyde , Undecylenaldehyde, vanillin, 2,6, 10-trimethyl-9-undecenal, 3-dodecen-1-al, alpha-n-amylcinnamaldehyde, melonal (2,6-dimethyl-5-heptenal), 2, 4-dimethyl- 3-cyclohexen-1-carboxaldehyde (triplal), 4-

Methoxybenzaldehyde, benzaldehyde, 3- (4-tert-butylphenyl) propanal, 2-methyl-3- (para-methoxyphenyl) propanal, 2-methyl-4- (2,6,6-timethyl-2 (1) -cyclohexene -1 -yl) butanal, 3-phenyl-2-propenal, cis- / trans-3,7-dimethyl-2,6-octadien-1-al, 3,7-dimethyl-6-octen-1-al. [(3,7-dimethyl-6-octenyl) oxy] acetaldehyde, 4-isopropylbenzylaldehyde, 1, 2, 3, 4, 5, 6,7,8-octahydro-8,8-dimethyl-2-naphthaldehyde, 2, 4-dimethyl-3-cyclohexene-1-carboxaldehyde, 2-methyl-3- (isopropylphenyl) propanal, 1-decanal, 2,6-dimethyl-5-heptenal, 4- (tricyclo [5.2.1 0 (2.6 )] - decylidene-8) -butanal, octahydro-4,7-methane-1 H-indenecarboxaldehyde, 3-ethoxy-4-hydroxybenzaldehyde, para-ethyl-alpha.alpha- dimethylhydrocinnamaldehyde, alpha-methyl-3,4- ( methylenedioxy) hydrocinnamaldehyde, 3,4-methylenedioxybenzaldehyde, alpha-n-hexylcinnamaldehyde, m-cymen-7-carboxaldehyde, alpha-methylphenylacetaldehyde, 7-hydroxy-3,7-dimethyloctanal, undecenal, 2,4,6-trimethyl-3 -cyclohexene-1-carboxaldehyde, 4- (3) (4-methyl-3-pentenyl) -3-cyclohexenecarboxaldehyde, 1 -dodecanal, 2,4-dimethylcyclohexene-3-carboxaldehyde, 4- (4-hydroxy-4-methyipentyl ) -3-cylohexene-1-carboxaldehyde, 7-methoxy-3,7-dimethyloctan-1-al, 2-methyl-undecanal, 2-methyldecanal, 1-nonanal, 1-octanal, 2,6,10-trimethyl- 5,9-undecadienal, 2-methyl-3- (4-tert -butyl) propanal,

Dihydrocinnamaldehyde, 1-methyl-4- (4-methyl-3-pentenyl) -3-cyclohexene-1-carboxaldehyde, 5- or 6-methoxyhexahydro-4,7-methanindane-1 - or -2-carboxaldehyde, 3.7 - Dimethyloctan-1-al, 1-undecanal, 10-undecen-1-al, 4-hydroxy-3-methoxybenzaldehyde, 1-methyl-3- (4-methylpentyl) -3-cyclohexenecarboxaldehyde, 7-hydroxy-3J-dimethyl octanal, trans-4-decenal, 2,6-nonadienal, para-tolylacetaldehyde, 4-ethylphenylacetaldehyde, 2-methyl-4- (2,6,6-trimeihyl-1-cyclohexen-1-yl) -2-butenal , ortho-methoxyzimialdehyde, 3,5,6-trimethyl-3-cyclohexene-carboxaldehyde, 3J-dimethyl-2-methylene-6-octenal, phenoxyacetaldehyde, 5,9-dimethyl-4,8-decadienal,

Peony aldehyde (6,10-dimethyl-3-oxa-5,9-undecadien-1-al), hexahydro-4,7-methanindan-1-carboxaldehyde, 2-methyloctanal, alpha-methyl-4- (1-methylethyl) benzene acetaldehyde, 6,6-dimethyl-2-norpinen-2-propionaldehyde, para- Methylphenoxyacetaldehyde, 2-methyl-3-phenyl-2-propen-1-al, 3,5,5-trimethylhexanal, hexahydro-8,8-dimethyl-2-naphthaldehyde, 3-propyl-bicyclo- [2.2.1] - hept-5-en-2-carbaldehyde, 9-decenal, 3-methyl-5-phenyl-1-pentanal. Methylnonylacetaldehyde, hexanal and trans-2-hexenal.

Fragrance compounds of the ketone type are, for example, methyl beta-naphthyl ketone, musk indanone (1, 2,3,5,6,7-hexahydro-1,1, 2,3,3-pentamethyl-4H-inden-4-one), tonaiide (6-acetyl-1, 1, 2,4,4, 7-hexamethyltetralin), alpha-Damascon, beta-Damascon, delta-Damascon, iso-Damascon, Damascenon, methyldihydrojasmonat, Menthon, Carvon, Kampfer, Koavon (3, 4, 5, 6, 6-pentamethylhept-3-en-2-one), fenchone, alpha-ionone, beta-ionone, gamma-methyl-ionone, fieuramon (2-heptylcyclopen-tanone), dihydrojasmon, cis-jasmone, iso-E-Super (1 - (1, 2, 3,4,5, 6J.8-octahydro-2, 3,8,8-tetramethyl-2-naphthalenyl) -ethan-1 -one (and isomers)) , Methylcedrenyl ketone, acetophenone, methylacetophenone, para-methoxyacetophenone, methyl beta-naphthyl ketone, benzylacetone, benzophenone, para-hydroxyphenylbutanone, celery ketone (3-methyl-5-propyl-2-cyclohexenone), 6-isopropyldecahydro-2

Dimethyloctenone, frescomenthe (2-butan-2-yl-cyclohexan-1 -oh), 4- (1-ethoxyvinyl) - 3,3,5,5-tetramethylcyclohexanone, methylheptenone, 2- (2- (4-methyl-3 -cyclohexen-1-yl) propyl) cyclopentanone, 1 - (p-menthen-6 (2) yl) -1-propanone, 4- (4-hydroxy-3-methoxyphenyl) -2-butanone, 2-acetyl-3.3 -dimethylnorbornan, 6,7-dihydro-1, 1, 2,3,3-pentamethyl-4 (5H) -indanone, 4-damascol, dulcinyl (4- (1, 3-benzodioxol-5-yl) butan-2 -oh), hexalone (1 - (2.6.6-trimethyl-2-cyclohexene-1-yl) -1, 6-heptadien-3-one), isocyclemonE (2-acetonaphthon-1, 2,3,4,5 , 6,7,8-octahydro-2,3,8,8-tetramethyl),

Methyl nonyl ketone, methyl cyclocitron, methyl lavender deletone, orivon (4-tert-amylcyclohexanone), 4-tert-butylcyclohexanone, delphon (2-pentylcyclopentanone), muscon (CAS 541 -91 -3), neobutenone (1 - (5,5-dimethyl -1 -cyclohexenyl) pent-4-en-1 -one), plicaton (CAS 41724-19-0) veiouton (2,2,5-trimethyl-5-pentylcyclopentan-1 -one), 2, 4,4, 7- tetramethyl-oct-6-en-3-one and tetrameran (6,10-dimethylundecen-2-or |).

Fragrance compounds of the alcohol type are, for example, 10-undecen-1-ol, 2,6-dimethylheptan-2-ol, 2-methylbutanol, 2-methylpentanol, 2-phenoxyethanol, 2-phenylpropanol, 2-tert-butycyclohexanol, 3,5,5-trimethylcyclohexanol, 3-hexanol, 3- Methyl-5-phenyl-pentanol, 3-octanol, 3-phenyl-propanol, 4-heptenol, 4-isopropylcyclohexanol, 4-tert-butycyclohexanol, 6,8-dimethyl-2-nonanol, 6-non-1-ol, 9-decen-1-ol, a-methylbenzyl alcohol, s-terpineol, amyl salicylate, Benzyialkohol, benzyl salicylate, beta-terpineol, Butyisalicylat, citronellol, cyclohexyl salicylate, decanol, dihydromyrcenol, dimethylbenzylcarbinol, dimethylheptanol, dimethyloctanol, ethyl salicylate, ethylvanillin, eugenol, farnesol, Geraniol, heptanol, hexyl salicylate, isoborneol, isoeugenol, isopulegol, linalool, menthol, myrtenol, n-hexanol, nerol, nonanol, octanol, p-menthan-7-ol, phenylethyl alcohol, phenol, phenylsalicylate, tetrahydrogerolinalol, tetrahydro 2-cis-6-nonadicnol, trans-2-nonen-1-ol, trans-2-octenol, undecanol, vanillin, champiniol, hexenol and cinnamon alcohol.

Ester type fragrance compounds are e.g. Benzyl acetate, phenoxyethyl isobutyrate, p-tert-butylcyclohexyl acetate, linalyl acetate,

Dimethylbenzylcarbinylacetate (DMBCA), phenylethyl acetate, benzyl acetate, ethylmethylphenylglycinate, allylcyclohexylpropionate, styrallylpropionate,

Benzyl salicyate, cyclohexyl salicylate, floramate, melusate and jasmine cyclate.

The ether fragrance compounds include, for example, benzyl ethyl ether and ambroxan.

The fragrance compounds hydrocarbons mainly include terpenes such as limonene and pinene.

Mixtures of different fragrances are preferably used, which together produce an appealing fragrance. Such a mixture of fragrances can also be referred to as perfume or perfume oil. Perfume oils of this type can also contain natural fragrance mixtures, as are obtainable from plant sources.

The fragrances or perfume oils of vegetable origin include essential oils such as angelica root oil, anise oil, arnica flower oil, basil oil, bay oil, champagne flower oil, citrus oil, noble fir oil, noble pine cone oil, elemi oil, eucalyptus oil, fennel oil. Spruce needle oil, galbanum oil, geranium oil. Ginger grass oil, guaiac wood oil, Gurjun balsam oil, helichrysum oil, ho oil, ginger oil, iris oil, jasmine oil, kajeput oil, calamus oil. Chamomile oil. Camphor oil. Kanaga oil, cardamom oil, cassia oil, pine needle oil, copaiva balsam oil. Coriander oil, spearmint oil, caraway oil, cumin oil, labdanum oil, lavender oil, lemongrass oil, linden blossom oil, lime oil, mandarin oil. Lemon balm oil, mint oil, musk grain oil, muscatel oil, myrrh oil, clove oil, neroli oil, niaouli oil. Olibanum oil, orange blossom oil, orange peel oil, origanum oil, palmarosa oil, patchouli oil, Peru balsam oil, petitgrain oil, pepper oil, peppermint oil, allspice oil. Pine oil, rose oil, rosemary oil, sage oil, sandalwood oil, celery oil, spik oil, star anise oil, turpentine oil, thuja oil, thyme oil, verbena oil, vetiver oil, juniper berry oil, wormwood oil, winter green oil, ylang ylang oil, hyssop oil, cinnamon oil, cinnamon oil, cinnamon oil Lemon oil and cypress oil as well as ambrettolide, ambroxan, alpha-amylcinnamaldehyde, anethole, anisaldehyde, anise alcohol, anisole, anthranilic acid methyl ester, acetophenone, benzylacetone, benzaldehyde, benzoic acid ethyl ester, benzophenone, benzyl alcohol, benzyl acetate, benzylneo benzene benzate benzate benzate benzate benzate benzate benzate benzate benzate benzate, alpha-bromostyrene, n-decyl, n-dodecyl aldehyde, Eugenoi, eugenol, eucalyptol, farnesol, fenchone, Fenchyiacetat, Geranyiacetat, Geranytformiat, heliotropin, Heptincarbonsäuremethylester, heptaldehyde, hydroquinone dimethyl ether, Hydroxyzimtaldehyd, Hydroxyzimtalkohol, indole, Iron, isoeugenol, isoeugenol methyl ether, Isosafrol, jasmon, camphor, karvakrol, karvon, p-cresol methyl ether, coumarin, p -Methoxyacetophenone, methyl-n-amyl ketone, methyl anthranilic acid, methyl ester, p-methylacetophenone, methylchavicol, p-methylquinoline, methyl-beta-naphthyl ketone, methyl-n-nonylacetaldehyde, methyl-n-nonyl ketone, muskon, beta-naphtholthol ether, beta-naphtholthol ether , n-nonyl aldehyde, nonyl alcohol, n-octyl aldehyde, p-oxy-acetophenone, pentadecanolide, beta-phenylethyl alcohol, phenylacetic acid, pulegon, safrole, salicylic acid isoamyl ester, salicylic acid methyl ester, salicylic acid hexyl ester, salicylic acid, cyclolate hexolate, sicolate, cyclolhexyl ester, Terpineol, Thymen, Thymol, Troenan, gamma-undelactone, vanillin, veratrum aldehyde, cinnamaldehyde, cinnamon alcohol, cinnamic acid, cinnamic acid ethyl ester. Benzyl cinnamate, diphenyl oxide, limonene, linalool, linalyl acetate and propionate, melusate, menthol, menthone, methyl-n-heptenone, pinene, phenylacetaldehyde, terpinylacetate, citral, citronellal and mixtures of the above-mentioned fragrances or perfume oils. In an alternative embodiment, it can be preferred that at least part of the fragrance is used as a fragrance precursor or in encapsulated form (fragrance capsules), in particular in microcapsules. The microcapsules are preferably water-soluble microcapsules. For example, melamine-urea-formaldehyde microcapsules, melamine-formaldehyde microcapsules, fluorine-formaldehyde microcapsules or starch microcapsules can be used. Fragrance precursors mean compounds which only release the actual fragrance after chemical conversion / cleavage, typically through the action of light or other ambient conditions, such as pH, temperature, etc. Such compounds are often also referred to as fragrance storage substances or “pro-fragrance”.

The at least one fragrance according to the invention is in the form of one or more free fragrance (s) or in the form of one or more free perfume oil (s).

In a further preferred embodiment, the at least one active ingredient is a substance for masking or neutralizing an unpleasant odor. From this group of active ingredients, norlimbanol or at least one of its isomers is preferably used in the active ingredient composition of the dispenser according to the invention. The most preferred of these is at least one isomer of norlimbanol, which is sold under the name Timberol® (1 - (2,2,6-

Trimethylcyciohexyl) hexan-3-ol) is commercially available.

Regardless of the form in which it is used, the amount of active ingredient in the active ingredient composition is 1 to 65% by weight, preferably 5 to 60% by weight and even more preferably 10 to 55% by weight, for example 30 up to 50 or 25 to 45 wt .-%, based on the total weight of the active ingredient composition. The fragrance can be contained in the carrier material described above up to maximum saturation, preferably in an amount of 1 to 65% by weight, preferably 5 to 60% by weight and even more preferably 10 to 55% by weight, for example 30 to 50 or 25 to 45% by weight, based on the total weight of the active ingredient composition.

The active substance composition can optionally contain further additives. In order to improve the application technology and / or aesthetic properties of the composition, regardless of its intended use, it can contain additional ingredients, preferably selected from the group consisting of non-sublimable carrier materials, dyes, bitter substances and mixtures thereof.

Preferred non-sublimable carrier materials are silica (for example Syloid products from Grace), cellulose (for example Microsponge N700), lauryl (meth) acrylate / glycol dimethacral crosspolymers (for example Polytrp 6603), plastics or plastic resins or ceramics Active ingredient composition of the dispenser according to the invention.

Dyes of the classes anthraquinone dyes, nitro dyes, nitroso dyes, azo dyes, diphenylmethane dyes, triphenylmethane dyes, xanthene dyes are preferably used as dyes,

Natural dyes, in particular carotenoids, dioxacin dyes or metal complex dyes, are used in the active ingredient composition of the dispenser according to the invention. Such dyes are preferably used in the active ingredient composition of the dispenser according to the invention as an end-of-use indicator in order to indicate to the consumer a visual signal that the supply of the active ingredients has been used up.

Advantageously, the total amount of such optional additives, if present, is not more than 10% by weight, preferably not more than 5% by weight, even more preferably not more than 2% by weight, of the total weight of the active ingredient composition.

After activation of the dispenser 1 by pulling off the impermeable sealing layer 9, the carrier material, in particular the diffuse sublimable carrier material, and the active ingredient contained therein together via the microporous membrane layer 8 to the outside.

Surprisingly, it has been shown that the use of a carrier material minimizes the loss of active ingredients or fragrances contained in the dispenser 1 during manufacture and storage, in particular the highly volatile active ingredients or fragrances which provide the “top notes” in a fragrance spectrum.

In addition, it has surprisingly been found that the presence of a sublimable carrier material in interaction with the microporous membrane layer 8 enables the volatile active substances, in particular volatile fragrances, to diffuse uniformly from inside the container 2 over the period of use of the dispenser 1 , regardless of their polarity, volatility and molecular size. This ensures, on the one hand, that the intensity of the evaporation does not decrease and, on the other hand, that the active ingredient properties of an active ingredient composition, in particular the fragrance properties of a fragrance composition, do not change and that the active ingredient spectrum, in particular the fragrance spectrum, remains constant during the course of the active ingredient delivery. In addition, the presence of a carrier material, in particular a sublimable carrier material, does not cause the liquid volatile active substances to accumulate on the outer surface of the membrane, for example in the form of drops or residues. The membrane surface does not get wet and cannot drip onto the surrounding surfaces. Consequently, no deformation, no dissolving or discoloration of the plastic material of the dispenser 1 by active substances escaping, and contact of the active substances with surrounding materials can be prevented.

At the same time, this makes the handling of the dispenser 1 more convenient, i.e. cleaner and there is no skin contact with leaked active ingredient.

The effect of the dispenser 1 according to the present invention, which comprises a microporous membrane layer 8, was compared to a dispenser tested according to the prior art, which comprises a polyethylene membrane. The test sample is a 100% fragrance mixture without additives, with the composition listed in the table. Evaporation took place at room temperature.

[0176] Table 1

As can be seen from Table 1 above, when the substances listed in column 1 are evaporated by means of the dispenser 1 according to the present invention, the residue in the dispenser 1 after 28 days is less than when the substances listed in column 1 are evaporated by means of a dispenser comprising a porous polyethylene membrane (membrane thickness: 40 pm). The dispenser 1 according to the present invention accordingly enables a faster and more uniform diffusion of the fragrances, while the diffusion of the fragrances via the polyethylene membrane takes place more slowly.

As can also be seen from the above results, polar substances such as fenchol, linalool, benzyl propionate also diffuse through the Microporous membrane layer 8 of the dispenser 1 according to the present invention, while in the dispenser with the polyethylene membrane the same polar substances diffuse less and are retained. Even substances with a higher molecular weight, such as citronelly acetate, diffuse better through the microporous membrane layer 8 of the dispenser 1 than through a polymethylene membrane.

Consequently, with the dispenser 1 according to the present invention, an improved and maximum release of an active substance / the active substances, in particular a fragrance / the perfumes, from the active substance composition is possible in comparison with dispensers from the prior art, regardless of their polarity, Volatility and its molecular size.

Because of a faster and more uniform release of the fragrances via the microporous membrane layer, the dispenser 1 according to the present invention is particularly well suited for use in a washing machine or in a tumble dryer, in which maximum fragrance within a washing process or drying process is recommended arrives in less than 2 hours.

[0181] Many fragrances deform, dissolve or discolor plastics, which severely limits the applicability of fragrances in contact with plastics.

The following Table 3 describes the change in the shape, texture and color of plastic material in contact with fragrances after 2 months of storage at 40 ° C in a glass jar.

The fragrance raw materials were used as a 10% solution in dipropylene glycol (DPG); the solvent DPG itself has no influence on the fact that it does not penetrate the plastic. Table 2

Remarks:

PE-LD: low density polyethylene

PP: polypropylene

PS: polystyrene

PVC: polyvinyl chloride)

PET-G: polyethylene terephthalate glycol

PU: polyurethane

As can be seen from Table 2, certain fragrances have an adverse effect on the shape, texture and color of the plastic materials used when they are in direct contact with it.

The flow behavior was determined using the example of a volatile and moderately volatile fragrance on a dispenser 1 according to the present invention, which comprises a carrier, compared to a dispenser according to the prior art which does not comprise a carrier, tested. For this purpose, the dispenser was placed upright and left for a certain period of time.

Table 3

As can be seen from Table 3 above and FIGS. 5 to 9, the volatile liquid active substances, ie fragrances, diffuse through the porous membrane 8 and collect - in comparison to the dispenser 1 according to the present invention - in a dispenser without a carrier material in the form of drops, flow marks or crystalline sticky residues on the outer surface of the dispenser device. In addition, the dispenser 1 is from the photos can be clearly seen that the accumulation of the active substances on the surface of the dispenser 1 leads to a deformation of the dispenser 1.

By preventing the active substances from flowing out of the dispenser 1 by using a carrier material, deformation or dissolution of the plastic membrane of the dispenser 1 and damage to the surrounding materials can be prevented. At the same time, the handling of the dispenser 1 becomes more convenient, i.e. cleaner, and skin contact with the active ingredient (s), which can possibly cause skin irritation, can thus be prevented.

In a further aspect, the present invention relates to a method for producing the dispenser 1 according to the invention for delivering an active ingredient.

The process for producing the dispenser 1 comprises the following steps:

Providing the container 2;

Preparing the active ingredient composition;

Transfer of the active ingredient composition into the cavity of the container 2; Placing the microporous membrane layer and the removable outer impermeable sealing layer on the container rim 5; and

Attach the microporous membrane layer 8 and the removable outer impermeable sealing layer 9 by means of an adhesive material or by applying heat and pressure to the periphery of the container edge 5 until the peripheral part of the microporous membrane layer 8 and the removable outer impermeable sealing layer 9 fuse with the container edge 5 in a sandwich-like manner .

For the manufacture of the dispenser 1 according to the present invention, the active ingredient composition is first produced. The active ingredient composition is preferably produced by melt molding or compression molding.

In a melt molding process, the support material is melted at a temperature which is preferably not more than 10 ° C above its melting point lies. The remaining ingredients, in particular at least one active ingredient, are then added and the composition is mixed well to form a melt mixture. Then the mixture is allowed to cool. If the mixture is still in a liquid or plastic state, it is molded to obtain a molded article or transferred directly into the cavity 3 of the container 2 of the dispenser 1. The molding is transferred into the cavity 3 of the container 2 of the dispenser 1.

[0194] In a compression molding process, the carrier material is mixed with the at least one active ingredient to form a mixture. The mixture is then compression molded to give a molded product. The molding is transferred into the cavity of the container 2 of the dispenser 1.

[0195] The active ingredient composition is preferably produced in a compression molding process. This reduces the risk of degradation or decomposition of the components of the active ingredient composition, especially if the active ingredient composition comprises a fragrance.

The microporous membrane layer 8 and the removable outer impermeable sealing layer 9 are then arranged on the container edge 5 and firmly connected to the container edge 5. With this priority, heat and pressure are applied to the periphery of the container rim 5 until the peripheral part of the microporous membrane layer 8 and the removable outer impermeable sealing layer 9 fuse with the container rim 5, thereby forming a seal which prevents any escape of the active substance to the outside .

Alternatively, the microporous membrane layer 8 and the removable outer impermeable sealing layer 9 are arranged on the container edge 5 and firmly bonded to the container edge 5 by means of an adhesive material, as described above, so that no active ingredient can escape to the outside. Another object of the invention and aspect relates to the use of the dispenser 1 according to the present invention. Due to its advantageous effects, as described above, the dispenser 1 according to the present invention is excellently suitable for scenting rooms, dishwashers, refrigerators, etc., for masking or neutralizing an unpleasant smell, for textile care, in particular for scenting and / or Conditioning of textiles, for example during washing, drying or chemical cleaning of textiles, for the delivery of insect repellants for pest control, in particular for pest control, for the release of biocides, in particular in areas with high atmospheric humidity, for example for preventing mold in the refrigerator, as toilet scent washers , or to release aromas, for example to aromatize water.

Embodiments

The dispenser 1 according to the invention according to the present invention is described in more detail below by way of example when used for scenting laundry.

Example 1:

The dispenser 1 according to the invention is used in a laundry scent ball in a dryer. The most common laundry fragrance with a fabric softener in the washing machine serves as a comparison.

The amount of fragrances applied to the laundry is compared.

Test description: A mixture consisting of four fragrances was incorporated into both formulations (Laundry Scent Ball and fabric softener). The amount of the fragrance mixture in the dispenser 1 was adjusted to the amount of the fragrance in the fabric softener, i.e. the amount of fragrances added via the fabric softener during washing was the same as that of fragrances via the dispenser during drying.

Formulation Laundry Scent Ball: 30% by weight of perfume

Quantity used in the dispenser 1: 0.5 g

Corresponds to 0.15 g of perfume when used in a dryer

The content of the pad after application was 80%

Formulation of fabric softener: 0.17% by weight of perfume

Amount used: 60 g

Corresponds to 0.1 g of perfume when used in a washing machine. Application:

The laundry, consisting of cotton towels, was washed at 30 ° C. and 1200 rpm using non-perfumed washing powder. Washing machine 1: Use with perfumed fabric softener

Washing machine 2: use without fabric softener

Drying 1: Laundry from washing machine 1 was dried on a line for 24 h.

Drying 2: Laundry from washing machine 2 was dried in a condenser dryer together with the Laundry Scent Ball.

The fragrances were analyzed by means of direct solvent extraction with MTBE of the terry cloth lobes. The analytical quantification was carried out using GC / MS.

The analytical determination of the odoriferous substances on the laundry clearly shows the advantage of the dispenser 1 according to the invention for laundry fragrance, as can be seen from FIG. 10.

The sensory evaluation confirms the analytical results: 14 subjects assessed the fragrance intensity of the laundry after drying on a line or after drying in a condenser dryer on a scale from 0 to 9 (0: does not smell; 9: smells strong).

12 of 14 subjects rated the intensity of the laundry after the treatment with the Laundry Scent Ball to be 2 to 3 scale degrees higher than the treatment with a fabric softener, as can be seen from FIG. 11.

Both the analytical results and the sensory results prove that more fragrances are applied to the textiles with the dispenser according to the present invention, and thus more intensive laundry fragrance can be achieved. Example 2:

The dispenser 1 according to the invention is used in a laundry scent ball in a dryer. A commercially available fabric softener (market product) with fragrance capsules containing more than 20 fragrances serves as a comparison.

Formulation Laundry Scent Ball: 30% by weight test fragrance mixture

Quantity used in the dispenser 1: 0.5 g

[0216] Fabric softener market product:

Amount used: 30 g

Corresponds to 0.1 g of perfume when used in a washing machine. Application:

The laundry, consisting of cotton towels, was washed at 30 ° C. and 1200 rpm using non-perfumed washing powder.

Washing machine 1: Use with perfumed fabric softener (market product)

Washing machine 2: use without fabric softener

Drying 1: Laundry from washing machine 1 was dried on a line for 24 h.

A sensory evaluation was carried out. 10 subjects assessed the fragrance intensity of the laundry after drying on a line or after drying in a condenser dryer on a scale from 0 to 9 (0: does not smell; 9: smells strong).

5 out of 10 subjects rated the intensity of the laundry after the treatment with the Laundry Scent Ball to be 2 to 3 scale degrees higher than the treatment with the commercial fabric softener, as can be seen from FIG. 12. The results of the sensory evaluation show that with the dispenser according to the present invention, more fragrances are applied to the textiles and thus a more intensive laundry fragrance can be achieved.

[0222] List of reference symbols

1 dispenser

2 containers

3 cavity

4 container opening

5 container rim

6 flange

7 film layer

8 permeable microporous membrane layer

9 impermeable sealing layer

10 intermediate layer

20 polymer fibers

21 silica aggregates

22 pore size ~ 20nm

Claims

1. Dispenser (1) for dispensing a volatile active substance, in particular a fragrance, comprising:

(a) a container (2) for receiving an active substance composition, which has a cavity (3), at least one container opening (4) and a container edge (5);

(b) a film layer (7) covering the container opening (4), the film layer (7) comprising or consisting of:

(i) an inner microporous membrane layer (8) facing the inside of the container and permeable to at least volatile polar substances;

(ii) an outer impermeable sealing layer (9) facing the outside of the container; and optional

(iii) an intermediate layer (10) between the inner permeable membrane layer (8) and the outer impermeable sealing layer (9);

and

(i) at least one sublimable or water-soluble or water-dispersible carrier material, in particular adamantane;

(ii) at least one volatile active ingredient, in particular a fragrance; and optional

(iii) at least one additive.

2. Dispenser (1) for dispensing an active ingredient according to the preceding claim, wherein the container (2) along its container edge (5) has a peripheral flat flange (6).

3. Dispenser (1) for dispensing an active ingredient according to one of the preceding claims, wherein the inner permeable microporous membrane layer (8) comprises:

a matrix of at least one water-insoluble thermoplastic organic polymer;

4. Dispenser (1) for delivering an active ingredient according to claim 3, wherein the at least one water-insoluble thermoplastic organic polymer is selected from the group consisting of polyethylene, polypropylene and mixtures thereof, in particular selected from the group consisting of polyethylene with a intrinsic viscosity in the range of 18 to 39 deciliters / g, measured according to ASTM D 4020-81, and polypropylene with an intrinsic viscosity in the range of 6 to 18 deciliters / g, measured according to ASTM D 4020-81, and mixtures thereof.

5. Dispenser (1) for delivering an active ingredient according to claim 3 or claim 4, wherein the proportion of water-insoluble filler is 20% by weight to 90% by weight of the microporous membrane and / or in which at least 90% by weight of the particles of water-insoluble filler have a particle size of 0.5 to 200 microns.

6. Dispenser (1) for delivering an active ingredient according to one of claims 3 to 5, wherein the particles of water-insoluble filler are selected from the

Group consisting of silicon dioxide, mica, montmorillonite, kaolinite, nanotones (nanoclays), talc, diatomaceous earth, vermiculite, natural and synthetic zeolites, cement, calcium silicate, aluminum silicate, sodium aluminum silicate, aluminum polysilicate, aluminum oxide silica gels, glass particles and mixtures thereof.

7. Dispenser (1) for delivering an active ingredient according to one of claims 3 to 6, wherein the proportion of connecting pores is 30 to 95% by volume of the microporous membrane, in particular wherein the proportion of connecting pores is 50 to 75% by volume of the microporous membrane , based on the total volume of the microporous membrane layer.

8. Dispenser (1) for delivering an active ingredient according to one of the preceding claims, wherein the outer impermeable sealing layer (9) consists of a material selected from the group consisting of aluminum, polyethylene, polypropylene, polyethylene terephthalate, polyester, polyurethane , Polyester urethane, polyvinyl alcohol, composites of the aforementioned polymers and metallized polymer films.

9. Dispenser (1) for dispensing an active ingredient according to one of the preceding claims, wherein the intermediate layer (10) between the inner permeable membrane layer (8) and the outer sealing layer (9) is arranged in the region of the edge portion of the container and / or wherein the Intermediate layer (10) consists of a material selected from the group consisting of rubber-based adhesives, block copolymer adhesives, polyisobutene-based adhesives, acrylic-based adhesives, silicone-based adhesives, polyurethane-based adhesives, vinyl-based adhesives and mixtures thereof.

10. Dispenser (1) for delivering an active ingredient according to one of the preceding claims, wherein the at least one sublimable carrier material is selected from the group consisting of

sublimable hydrocarbons, especially adamantane, endotrimethylene norbornane, cyclododecane, trimethylnorbornane, norbornane, naphthalene;

sublimable polar compounds, especially dimethyl fumarate, benzoic acid, trioxymethylene, coumarin, p-dichlorobenzene, e-caprolactam, 1,4-cyclohexanediol, phthalide, lactide, triisopropyltrioxane; saturated and unsaturated and optionally substituted alicyclic hydrocarbons, in particular trimethylene norbornane;

saturated and unsaturated and optionally substituted cyclic hydrocarbons, in particular cyclodecane, tetrahydrodicyclopentadiene, camphor; and

aliphatic and aromatic acids, especially dimethyl fumarate, benzoic acid and trioxane; and mixtures of the aforementioned compounds.

11. Dispenser (1) for dispensing an active ingredient according to one of the preceding claims, wherein the at least one sublimable carrier material has a sublimation temperature in the range from 20 ° C to 90 ° C, in particular has a sublimation temperature in the range from 30 ° C to 80 ° C .

12. Dispenser (1) for dispensing an active ingredient according to one of the preceding claims, wherein the at least one water-soluble or water-dispersible carrier material is selected from the group consisting of polyalkylene glycols, in particular polyethylene glycol and polypropylene glycol, and mixtures of the aforementioned compounds.

13. Dispenser (1) for dispensing an active ingredient according to one of the preceding claims, wherein the proportion of the at least one sublimable or water-soluble or water-dispersible carrier material is in the range from 35 to 99% by weight, in particular in the range from 40 to 95% by weight. %, is based on the total amount of the active ingredient composition.

14. Dispenser (1) for dispensing an active ingredient according to one of the preceding claims, wherein the at least one active ingredient is selected from the group consisting of: fragrances, volatile substances for masking or neutralizing an unpleasant odor, substances with a textile-softening effect , Impregnating agents, water-repellent substances, insecticides, in particular repellents, biocides, bleaching agents, pearlescent agents, skin care substances, aroma substances and mixtures of the aforementioned active substances.

15. Dispenser (1) for dispensing an active ingredient according to one of the preceding claims, wherein the proportion of the at least one active ingredient is in the range from 1 to 65% by weight, in particular in the range from 10 to 55% by weight on the total amount of the active ingredient composition.

16. Dispenser (1) for delivering an active ingredient according to one of the preceding claims, wherein the at least one additive is selected from the group consisting of non-sublimable carrier materials, stabilizers, dyes, bitter substances, and mixtures of the aforementioned additives.

17. A method for producing the dispenser (1) for dispensing an active substance according to one of the preceding claims, which comprises the following steps:

Providing the container (2);

Preparing the active ingredient composition;

Transferring the active ingredient composition into the cavity (3) of the container (2);

Placing the microporous membrane layer and the removable outer impermeable sealing layer (9) on the container rim (5); and attaching the microporous membrane layer (8) and the removable outer impermeable sealing layer (9) by means of an adhesive material or by applying heat and pressure to the circumference of the container edge (5) until the peripheral part of the microporous membrane layer and the removable outer impermeable sealing layer ( 9) Melt in a sandwich with the edge of the container (5).

18. Use of the dispenser (1) for dispensing an active ingredient according to one of claims 1 to 16 for scenting rooms, dishwashers, refrigerators, for masking or neutralizing an unpleasant one Odor, for textile care, in particular for scenting and / or conditioning textiles, in particular when washing, drying or chemical cleaning of textiles, for delivering insect repellants for pest control, in particular for pest control, for releasing biocides, as toilet scent washers, or for the release of flavorings.