JPH0649064B2 - Carrier for substances that vaporize or sublime at room temperature and volatilizer using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] Impregnation with aromatic substances and chemical substances for insect control and deodorization,
The present invention relates to a carrier that can be retained, moved, and volatilized, and an air freshener, insect repellent, and deodorizer using the same.

[Prior Art] Conventionally, a fragrance carrier intended to diffuse the scent of flowers, fruits, etc. indoors has been a sheet or pellet after a fragrance or a fragrance and an inorganic fine powder are directly mixed and kneaded with a thermoplastic resin. Some are melt-formed into a shape. Further, there is a product obtained by hydrating calcined gypsum for the same purpose and cast molding, in which a fragrance or the like is incorporated. Also, there is a method in which a liquid fragrance is contained in a container, and a fibrous substance is bundled and sucked by a capillary phenomenon to be diffused into the atmosphere directly on the upper part of the container or through another member.

[Problems to be solved by the invention] In order to make a carrier, since it is exposed to high temperature during melt molding, the perfume that can be used is limited due to its compatibility with the thermoplastic resin, and the content is also limited. It had a drawback. The carrier has a drawback that the shape that can be produced is limited because it is cast molding. Further, there was a risk of breaking due to a fall or the like. The carrier has excellent ability to move liquid, but can only be obtained in columnar or plate form,
Since the moving part and the volatilizing part have to be combined with different members, there is a drawback that the shape is limited. Further, the structure is weak in strength, and when it is attached to a container, it is necessary to separately provide a support, and if this carrier is applied to an aromatic material container or the like, it becomes an expensive product and the range of application is limited.

For this reason, the present invention can form a highly flexible shape by melt molding such as injection molding like general plastics, and impregnate, hold, and move a substance that has sufficient strength as a structure and that vaporizes or sublimes at room temperature. The object is to provide a carrier that can be volatilized.

[Means for Solving the Problem] The present invention that achieves such an object can be obtained by extracting and removing liquid paraffin from a thermoplastic resin molded product containing liquid paraffin. 0.01 to 10 hole diameter that communicates from one side to the other
A carrier for impregnation and volatilization of a sublimable or vaporizable substance (a carrier such as an aromatic agent, an insect repellent, a deodorant, etc.) consisting of a thermoplastic resin having at least a part of micrometer pores, or a sublimable or vaporized substance to this carrier It is a volatilizer (fragrance agent, insect repellent, deodorant, etc.) of the substance impregnated with a volatile substance.

The thermoplastic resin having the above-mentioned fine pores in at least a part thereof has been invented by the present inventor and has already been applied for a patent (Japanese Patent Application Laid-Open Nos. 61-287944 and 62-8).
No. 1431) and has excellent properties that can be used for various purposes. In particular, in addition to having a high degree of freedom in terms of shape and having sufficient strength as a structure, since the fine pores of the resin are extremely effective as a carrier for volatile substances, volatile substances Is most suitable as a carrier. The micropores possessed by such a resin were characterized in that one surface communicated with the other surface and the pore diameter was about 0.01 to 10 μm, but this pore diameter is sufficient as a medium for moving a volatile substance and always volatilizing a fixed amount. However, even if the container containing the volatile substance was accidentally overturned, the substance did not leak out. By using this resin, in addition to such a volatility control function, it is easy to mold a complicated shape, so that it can be widely applied as a carrier for volatile substances.

The carrier capable of impregnating, holding, moving and volatilizing a substance that vaporizes or sublimes at room temperature according to the present invention has a pore diameter that communicates from one surface to the other surface.
The thermoplastic resin molded product has fine pores of 0.01 μm to 10 μm in at least a part thereof. Regarding the manufacturing method, the present inventor has disclosed in Japanese Patent Laid-Open Nos. 61-287944 and 62/1987.
As described in detail in JP-A-81431, at least one resin selected from polyolefins, polyamides, and polyvinyl chloride resins, preferably polyolefin, liquid paraffin, and optionally inorganic fibrous filler. It is obtained by molding a uniform resin composition consisting of and by injection molding or extrusion molding, and then extracting and removing the liquid paraffin from the molded product with a halogenated hydrocarbon such as Freon at room temperature. The obtained molded product is impregnated with a substance that vaporizes or sublimes at room temperature, or the molded product is brought into contact with a substance that vaporizes or sublimes at room temperature, and a carrier for the fragrance, insect repellent, and deodorant of the present invention and An air freshener device, an insect repellent device, and a deodorant device incorporating the carrier were obtained.

FIG. 1 shows a structure in which the carrier of the present invention is applied to an air freshener. The air freshener device 11 includes a carrier 12, a container portion 13, and an air freshener 14.

The carrier 12 is formed of a thermoplastic resin having fine pores which are communicated from one side to the other side on the entire surface. Since the molded product has sufficient strength as a structure and can be injection-molded like general plastics, the molded product in which the fixed part 17 and the ventilation part 18 as well as the moving part 15 and the volatilization part 16 are integrated. Obtained as. The container portion 13 may be any as long as it is not attacked by the liquid fragrance, for example, glass,
Ceramics, polypropylene, etc. The fragrance 14 is a liquid fragrance in which a vegetable essential oil or the like is dissolved in a volatile solvent. The liquid fragrance 14 moves to the upper volatilization section 16 by capillary action through the fine pores of the molded article itself in the moving section 15 of the molded article, and is further vaporized into the atmosphere. However, since the liquid fragrance 14 does not pass through the fine holes, even if the fragrance device 11 is tilted, it does not leak out of the container.

Further, in place of the fragrance 14 of FIG. 1, a pyrethroid insecticide, an organophosphorus insecticide, a synthetic carbamate insecticide are dissolved in a volatile solvent, and an insect repellent device to be stored in the container 13 is provided. be able to. Further, it is possible to provide a deodorant device in which, in place of the fragrance 14, a vegetable essential oil or the like that decomposes an odor component is dissolved in a volatile solvent and is stored in the container 13. These solutions are volatile and are volatilized into the atmosphere through the fine pores of the carrier 12. However, since the solution does not pass through the fine holes, it does not leak out of the container.

Next, an application example of the present invention is shown in FIG. Volatilization part of carrier 22
A part of 26 is a non-permeable substance (which blocks the movement of fragrance, etc.) 29, and the ventilation part 30 is composed of another disc-shaped permeable member with its outer periphery covered. It is similar to the figure. Since the outer periphery of the ventilation part 30 is covered with an impermeable substance, the fragrance or the like that reaches the volatilization part through the moving part does not enter the ventilation part due to the capillary phenomenon and does not get wet (the carrier is impregnated. Since it has air permeability at all times, the negative pressure inside the container does not occur due to the volatilization of the fragrance and the like outside the container, and the volatilization of the fragrance is prevented.

Next, an example in which the carrier of the present invention is applied as a carrier containing an fragrance, an insect repellent, and a deodorant is shown in FIG. 3 (the figure shows an embodiment in which the carrier is directly impregnated with the fragrance, etc. without using a container portion. Is shown).

The carrier 32 is molded from a thermoplastic resin having fine holes communicating from one surface to the other surface. The molded product has sufficient strength as a structure and can be injection-molded like general plastics, so that a free shape can be formed if necessary. The carrier is impregnated with a solution of any of an aromatic agent, an insect repellent, and a deodorant. The fragrance, the insect repellent, and the deodorant are sucked into the fine pores of the molded product by a capillary phenomenon when in a solution state, are retained in the molded product, and are gradually vaporized into the atmosphere.

The fragrance carrier, insect repellent carrier, and deodorant carrier of the present invention are supplied in a hermetically sealed packaging by a packaging material having a high gas barrier property. By hermetically packing with a packaging material having a high gas barrier property, it is possible to prevent the fragrance, insect repellent, and deodorant from vaporizing or sublimating and being volatilized into the atmosphere until the time of use. Then, by opening a part or the front part of this package, immediately as it is, as a fragrance carrier, insect repellent carrier, deodorant carrier, or as an fragrance device, insect repellent device, deodorant device, or fragrance. It can be used as a dispenser, insect repellent, and deodorizer.

The term "pore size of the carrier" as used herein refers to the maximum pore size measured by the following measuring method. To measure the maximum pore size, 100 ml of a solution obtained by diluting polystyrene latex [Uniform Lattex Particles (manufactured by Dow Chemical Co.)] with a uniform particle size to a solid concentration of 0.1 wt% is passed, and the trapping efficiency is calculated by the following formula.

Capture efficiency = (1-C _P / C _F ) × 100 C _F : latex concentration of undiluted solution C _P : latex concentration of liquid passing through the porous body This capture efficiency was calculated from latex with a small particle size, and this value was 100% for the first time. The particle size at which the particle size becomes the maximum is the maximum pore size of the molded product.

[Example] Example 1 A uniform resin composition comprising polypropylene, liquid paraffin and an inorganic fibrous filler was molded into the shape of the carrier 12 shown in Fig. 1 by an injection molding method, and then was heated with Freon to room temperature. The liquid paraffin was extracted and removed. The maximum pore size of the obtained carrier was 1 μm. As shown in FIG. 1, 30 ml of the fragrance 14 was stored in the assembly container 13.

Comparative Example 1 A carrier composed of two parts was prepared in the same manner as in Example 1 except that a fibrous substance was bundled and formed into a columnar shape, and a plate-shaped filter paper was used as a volatilization part.

Example 2 A uniform resin composition composed of polypropylene, liquid paraffin, and an inorganic fibrous filler was molded into the shape of the carrier 32 shown in FIG. 3 by an injection molding method, and then liquid paraffin was heated at room temperature with Freon. Was removed by extraction. The maximum pore size of the obtained carrier was 1 μm. Add this to the fragrance solution 1
It was immersed for a period of time to contain a fragrance.

The fragrance of the fragrance container of Example 1 was maintained for about 2 months, and the intensity of the fragrance was almost constant from the start to the end of use. Furthermore, even when this fragrance container was laid down, the fragrance inside the container did not leak to the outside.

The fragrance container of Comparative Example 1 had the same fragrance duration as in Example 1, but when the fragrance container was kept in the upside down state, the fragrance in the container leaked to the outside.

The fragrance of the carrier containing the fragrance of Example 2 was maintained for about one month, and the intensity of the fragrance was almost constant from the start to the end of use. Furthermore, no scent of fragrance was observed from the carrier containing this fragrance.

[Advantages of the Invention] The carrier of a substance that vaporizes or sublimes at room temperature according to the present invention and the aromatic agent, insect repellent, and deodorant agent using the same have the following features and effects.

From the beginning to the end of use, a constant volatile component can be constantly supplied to the atmosphere.

Since volatile substances in the container and carrier do not leak, no stains or other problems occur.

By injection molding method and hollow molding method, it is possible to easily fabricate a complicated shape, and since the moving part and the volatilizing part can be integrally molded, the application range is wide and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment in which the present invention is applied to an air freshener container, FIG. 2 is a sectional view showing another embodiment in which the present invention is applied to an air freshener container, and FIG. 3 is a sectional view showing the present invention. It is a front view showing one example applied to a carrier containing an aromatic. 11 ... Air freshener device, 12, 22, 32 ... Carrier, 13 ... Container part, 14 ... Air freshener, 15 ... Transfer part, 16, 26 ... Volatilization part, 17 ... Fixed part, 18 ... Ventilation part, 29 ... Impermeable Substance, 30 ... Ventilation part, 31 ... Carrier containing fragrance

Claims (9)

[Claims] 1. A thermoplastic resin obtained by extracting and removing liquid paraffin from a thermoplastic resin molded product containing liquid paraffin, and having at least a part of fine pores having a pore diameter of 0.01 to 10 μm and communicating from one surface to the other surface. A carrier for impregnation and volatilization of a sublimable or vaporizable substance, comprising: 2. The carrier according to claim 1, wherein the fine pores are present on the entire surface of the carrier. 3. A sublimable or vaporizable substance is a fragrance, an insect repellent,
The carrier according to claim 1 or 2, which is at least one kind of deodorant. 4. A thermoplastic resin obtained by extracting and removing liquid paraffin from a thermoplastic resin molded product containing liquid paraffin, and having at least a part of fine pores having a pore diameter of 0.01 to 10 μm and communicating from one surface to the other surface. A volatilizer for a sublimable or vaporizable substance, which is obtained by impregnating a sublimable or vaporizable substance with a carrier for impregnation and volatilization of the substance. 5. A sublimable or vaporizable substance is contained in a container,
The volatilizer according to claim 4, wherein the container is sealed with the impregnating and volatilizing carrier, and the substance is brought into contact with the carrier for impregnation. 6. The volatilizer according to claim 5, wherein the carrier that seals the container is provided with a ventilation part that is not impregnated with a sublimable or vaporizable substance. 7. The volatilizer according to claim 4, comprising the impregnating and volatilizing carrier formed as a volatilizer structure and impregnated with a sublimable or vaporizable substance. 8. A sublimable or vaporizable substance is a fragrance, an insect repellent,
The volatilizer according to any one of claims 4 to 7, which is at least one kind of deodorant. 9. The method according to claim 4, wherein a part or the whole surface of the carrier impregnated with the sublimable or vaporizable substance is covered with a substance having a high gas barrier property. Volatilizer.