DD248508A1 - PERFUME DONORS - Google Patents

Abstract

The invention relates to perfume dispensers for room air improvement, consisting of a packaging system with controllable Luftdurchstroemung, a reversibly ad- and desorbent Traegerstoff high fragrance uptake capacity and a fragrance composition. The operating principle consists in the displacement desorption of the fragrances with water vapor in the gas phase, being used as carriers crystalline aluminosilicates in powder or granular form. By selective choice of the critical molecular diameter of the fragrance components, the use of a chromatographic effect during desorption is possible.

Description

Sorption capacity so strong that fragrances and active ingredients are irreversibly held and delivered only in an aqueous or alcoholic solution. Consequently, the use of aerosil in perfume dispensers is not common. Furthermore, the odor intensity of an opened fragrance dispenser is highly temperature dependent, according to the temperature dependent vapor pressure. Due to the exclusive principle of temperature-dependent evaporation as well as the low loading capacity, the duration of use of an open fragrance dispenser is temporarily limited. Finally, the carrier must not undergo chemical reactions with fragrances (organic carriers) and should have no harmful effects; Thus, the application of the already proposed asbestos prohibits (DE-AS 2 509 383).

Object of the invention

The aim of the invention is a fragrance dispenser based on a reversibly ad- and desorbent carrier high capacity for fragrances, which has a long shelf life and low temperature dependence of the odor intensity.

Explanation of the essence of the invention

The invention has for its object to modify an inorganic support material so that the known principle of action of the temperature-dependent evaporation superimposed by another controllable mode of action, ert is. It has been found that the object and the object of the invention is achieved by using, as the carrier material for fragrances in a packaging system with controllable air supply, a crystalline aluminosilicate of the specific composition

XNa ₂ O. Al ₂ O ₃ .VSiO ₂

where χ and y are numbers in the limits χ = 0.8-1.0 and y = 1.0-5.5, and which has a water vapor adsorption capacity of at least 21% at 0.6 Torr partial pressure and at 25 ° C and the critical molecular diameters of the components of the fragrance composition are predominantly between 2 and 8 angstroms. Such an inventive fragrance dispenser works in contrast to all known systems not on the principle of evaporation but according to the principle of desorption with water vapor in the gas phase. Due to the high affinity of active or chemiekalienbeladener, crystalline aluminosilicates to water vapor, the desorption or displacement in the micropores of the crystalline aluminosilicates by the moisture content of the air with high kinetics at significantly lower temperature dependence compared to the evaporation principle, which surprisingly strong polar ketonic and aldehydic Groups are displaced by water vapor. The control of the odor intensity is carried out indirectly by the intensity of the air flow, directly by the humidity, controllable by more or less strong opening of the packaging system

 By using the fragrance dispenser according to the invention, there are further advantages:

The high degree of loading of the aluminosilicates according to the invention (about 40%);

- Reversible fragrance desorption by water vapor (in contrast to Aerosil) at high kinetics;

- Strong adsorption capacity for fragrances by the micro pore system, ie long retention of the fragrance, long shelf life in the absence of humidity even at higher temperatures (eg at 50 ⁰ C in the car);

- Of crucial advantage is the possibility of exploiting the chromatographic effect in the desorption from the micropores, if in the perfume composition a maximum of 5% fixers, z. As musk, and a maximum of 10% fragrances with critical molecular diameters above 8 Angstrom are included. Due to the different adsorption, desorption capacity of smaller or larger molecules at the inner and outer pores, known odor notes can be achieved with modified formulations compared with the formulations conventionally known for the known odor notes.

- The crystalline aluminosilicates can be used both as a powder as well as in the form of extruded or spherical granules. The loading of crystalline aluminosilicates having the perfume composition is carried out after activation at 45O ⁰ C.

embodiment

Example 1

520 g of granules of the aluminum silicate of the specific composition XNa ₂ O Al ₂ O ₃ ySiO ₂ (x = 0.8-1.0; y = 1.9-5.5) are added in portions with 280 g of a fragrance composition "lilac" Composition mixed:

0.5% fatty aldehyde C 10, 10%

0.5% indoxane

2.0% trichloromethylphenylcarbinyl acetate

2.0% musk ketone

4.0% cinnamon alcohol

6.0% 3,4-methylenedioxibenzaldehyde

8.0% phenylethyl alcohol 11.0% benzyl alcohol 20.0% benzyl acetate 46.0% terpineol 100.0%

After mixing, the granules are practically dry and is filled into a can with laterally slot-shaped, closable opening. When opening the slots, the fragrance composition is released by contact with the air humidity of the room air.

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Example 2

g of a powder of aluminum silicate of specific composition XNa ₂ O · Al ₂ O ₃ · VSiO _2; portionwise with 280 g "a fragrance composition" lemon (x = 0.9-1.0 y = 1.9 to 3.0) "of the following composition applied:

0.5% fatty aldehyde C 10, 10% 0.5% cumene alcohol 2.0% styrolyl acetate 2, Q% musk ketone 3.0% cinnamyl alcohol 8.0% phenylethyl alcohol 3.0% citronell oil 3.0% trichloromethylphenylcarbinylacetate 6, 0% terpinyl

6.0% geranonitrile 26.0% litsea cubeba oil 40.0% citronellal 100.0% »

The mixing of the carrier material with the perfume composition takes place so intensively until an almost dry powder is obtained. The mixture is placed in a round box with laterally closable screen openings. In a half turn of the can, the screen surface is released, so that with the room air contact the fragrance composition can flow out.

Claims (6)

1. fragrance dispenser, consisting of a packaging system with controllable air flow, a carrier and a fragrance composition, characterized in that as a carrier, a crystalline aluminosilicate of the specific composition XNa ₂ O · Al ₂ O ₃ .ySiO _2, wherein χ = 0.8-1.0 and y = 1.9-5.5, is used, which has a Wasserdampfadsorptionskapazität of at least 21% at 0.6 Torr water vapor partial pressure and 25 ⁰ C, and that the critical molecular diameter of the Components of the fragrance composition are predominantly between 2 and 8 angstroms. 2. perfume dispenser according to item 1, characterized in that as a carrier, a crystalline aluminosilicate faujasite type of the composition XNa ₂ O · Al ₂ O ₃ .ySiO _2, where χ = 0.9-1.0 and y = 2.4-3.0 mean is used. 3. perfume dispenser according to item 1, characterized in that as a carrier, a crystalline aluminosilicate of the specific composition XNa ₂ O · Al ₂ O ₃ VSiO _2, where χ = 0.9-1.0 and y = 1.0-2.1 mean, and the chromatogaphy principle is used in the desorption. 4. fragrance dispenser according to the items 1 to 3, characterized in that the carrier is loaded in powder form with fragrances and used in water vapor and fragrance-permeable bags in the packaging system. 5. perfume dispenser according to points 1 to 3, characterized in that the carrier is loaded in granular form with fragrances and used in the packaging system. " 6. fragrance dispenser according to the items 1 to 5, characterized in that the fragrance composition contains a maximum of 5% fixatives, preferably musk. Field of application of the invention The fragrance dispenser according to the invention is suitable as room air improver for living and sanitary rooms, offices, motor vehicles and in laundry wardrobes. Characteristic of the known technical solutions Fragrance dispensers based on a perfume-impregnated carrier material in odor-permeable or aeration-capable packaging systems are known in various variants. Odor-permeable packaging systems are z. B. sachets, consisting of a closed bag made of plastic film, in which fragrances are preferably contained together with an inert absorbent carrier. As the absorbent material therefor nonwovens, textile fabrics, felt, paper, foams, sponges, polymerized or condensed plastics, cellulose plates and similar materials have been proposed. The principle of fragrance release is due to evaporation of the most liquid fragrance components from the solid support which allows for a solid consistency of the overall system. Ventilatable packaging systems are z. B. cans with a rotating lid having a plurality of concentric openings, wherein by rotation of the lid, the locking devices are opened. As a variant z. B. proposed (DE-OS 3,332,525) consisting of two identical housing halves housing containing an absorbent disc made of felt or the like. Inside, wherein the two housing parts are rotatable relative to each other by about 45 °. In the rotary end position, the jacket is closed by wall parts on the circumference, in the other rotary end position windows are open in the jacket, which result in a connection of the housing interior with the ambient air. Instead of felt or similar absorbent-acting carriers have also been proposed carriers which have an electrolytically anodically produced fine-pored metal oxide layer for the absorption of the fragrances, wherein the carriers of the anodic oxidation should be deep etched (DE-AS 2 404 253). Furthermore, air fresheners with gel-containing, fragrance-containing evaporation body and a odor-permeable casing or cover plate are known, wherein the shell or cover plate automatically opens in the course of evaporation by the shrinkage of the evaporation body by gravity (DE-OS 3,229,511). All known and illustrated systems are based on the principle of evaporation of a sucked in a macroporous system of the carrier perfume combination and therefore have principle disadvantages. First, the known carriers have a low absorption or suction for fragrances to the lumping or smearing of the surface, such. B. carrier