JPH02252462A - Method and apparatus for dissipating volatile chemical - Google Patents

Abstract

PURPOSE:To enable a composition of dissipating gas from volatile chemicals to be controlled almost constant by fractionating volatile chemicals composed of multicomponent liquid or solid into two ro more component groups of different volatility and by making these component groups dissipate from respective small chambers so as to dissipate a gas having almost the same composition as those volatile chemicals as a whole. CONSTITUTION:A container 1A is made of a suitable chemical-impermeable material such as plastics, metal, glass or ceramics and its shape is not specified. The container 1A has small chambers 4, 4', which are separated with each other by a partition wall 2. Two or more chemical, component groups A and B, which are fractionated based on a difference in volatility, are stored in the small chambers 4 and 4' respectively. Rates of dissipation of the chemical components from the small chambers 4 and 4' are regulated by arranging membranes 3 and 3', which have different permeabilities for the chemicals, on the tops of respective chambers. Among the chemical components, a highly volatile component or component group is made to dissipate through a low permeable film and a low volatile component or component groups through a highly permeable film. It is possible, by using this method, to keep a composition of gas dissipating from the volatile chemicals almost constant for a long time.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for effectively volatilizing volatile chemicals such as fragrances, repellents for insects and small animals, and deodorants for a long period of time, and a drug used for the purpose. It is related to volatilization tools.

[Prior Art] In general, volatile drugs consisting of multiple components differ in the degree of volatilization of each drug component, so as the drug evaporates, the composition of the remaining drug changes, and the composition of the volatilized gas changes. It is inevitable that things will change over time. For example, a typical example is that the scent of a perfume gradually changes over time.

Conventionally, in order to suppress the change in the scent tone of fragrances over time, methods have been attempted such as adsorbing fragrances onto porous materials or using permeability control membranes. Both have an effect only on limiting the volatilization rate,
This does not essentially solve the problem of changes in fragrance tone.

Problem 211 to be Solved by the Invention] As mentioned above, there has been a need for a method for effectively destroying a volatile drug over a long period of time, and for a suitable tool for use therein.

In view of these points, and as a result of intensive studies, the present invention has been developed to provide a method in which the gas evaporated from a volatile drug consisting of multi-component liquids or solids with different volatilities maintains a nearly constant composition over time. The present invention provides a method for volatilizing a chemical and a device for volatilizing a chemical that can be adjusted as follows.

[Means for Solving the Problems] The present invention separates a volatile drug consisting of a multi-component liquid or solid into a plurality of component groups with different volatilities, and divides each component group into each small chamber. The present invention relates to a method for volatilizing a volatile chemical, characterized in that each component group is volatilized from each small chamber, and a gas having approximately the same composition as the volatile chemical is volatilized as a whole.

Furthermore, the present invention is composed of a plurality of small chambers made of a plurality of membranes having different drug permeability, or a plurality of small chambers each having a part of the outer wall provided with the above-mentioned membranes, and a volatile drug of a multi-component type is evaporated. The chemical volatilization tool and the volatile chemical stored in each of the small chambers are separated into a plurality of component groups with different volatilities. This invention relates to a volatilization tool for volatile chemicals impregnated and adsorbed with different adsorbents.

The present invention will be explained in detail below based on the drawings.

FIG. 1 is a schematic cross-sectional view of an embodiment of the volatile chemical volatilization tool of the present invention.

In FIG. 1, the container IA is made of a suitable drug-impermeable material such as plastic, metal, glass, or ceramic, and the shape of the container is not particularly limited. The container IA has a compartment 4.4' separated by a partition 2. Each small room 4, 4'
contains a plurality of drug component groups A and B separated according to their volatility, and the small chamber 4.4''
By providing membranes 3, 3' with different drug permeability on top of the membrane, the volatilization rate of the drug components can be adjusted.

The membranes 3 and 3' having different drug permeability are not particularly limited, but from the viewpoint of processability, cost, etc., preferred examples include thermoplastic synthetic resin films. Examples include polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, flexible polyvinyl chloride, and polyamide.

In addition, among the drug components, a highly volatile component or a group of components is passed through a film with low permeability, and a component or a group of components with low volatility is volatilized through a film with high permeability. In this way, the composition of the gas evaporated from the volatile drug can be kept almost constant over a long period of time, and the aroma tone of the perfume or the medicinal efficacy of the drug will not change.

In addition, in the above and the following embodiments, there are two small chambers 4, 4°, but it is of course possible to configure three chambers or multiple chambers depending on the case.

FIGS. 2 and 3 are schematic cross-sectional views of other embodiments of the volatile chemical volatilization device of the present invention. Containers IB and IC are
It is a bag-shaped item made of flexible materials such as plastic, metal foil such as aluminum foil, or a laminate thereof. In containers IB and IC, a plurality of small chambers 4° 4° are formed by partition walls 2, and drug components A and B separated into a plurality of component groups are stored, respectively.

In the embodiment of FIG. 2, each chamber 4,4' is entirely formed by membranes 3,3' of different drug permeability.

In the embodiment shown in FIG. 3, membranes 3.3'' having different drug permeability are applied only to the upper part of the container, and the main body 5, which occupies most of the other part of the container, is made of a drug-impermeable material (e.g. aluminum foil).

In the case of the embodiments shown in FIGS. 2 and 3, the partition wall 2 may be formed of an appropriate drug-impermeable material and attached, but the partition wall 2 may be attached to the center of the bag-like container by, for example, heat sealing. The partition wall 2 can also be formed by forming a line.

FIG. 4 is a schematic cross-sectional view of a volatile drug continuation device showing still another embodiment of the present invention.

In this embodiment, the container 10 has a chamber 40 partitioned by a plurality of partition walls 30, in which a plurality of components A of a volatile drug consisting of a multi-component liquid or solid, with different volatilities, Small pieces 50 in which B, C, and D are impregnated and adsorbed with adsorbents having different volatilization rates are stored, respectively.

The adsorbent may be any material as long as it is capable of absorbing, adsorbing, impregnating, or adhering the volatile drug, and can later volatilize and release the drug effectively. For example, paper, sponge, nonwoven fabric, woven fabric, foam, or laminates thereof, or starch, dextrin, gelatin, cellulose powder,
Examples include sheets containing adsorbed substances such as silicon dioxide, aluminum silicate, and talc, and sheets made of polar group-containing polymers such as ethylene-vinyl acetate copolymers and ethylene-acrylic acid ester copolymers.

The method of separating a volatile drug consisting of a multi-component liquid or solid into a plurality of component groups with different volatilities is not particularly limited. isolated fragrance separated by
Various other isolated fragrances, natural fragrances, etc., or components or component groups of other drugs are appropriately classified or combined according to their volatility.

Volatile agents to which the method of the present invention is applied include perfumes,
Examples include repellents used for insects and small animals, insect repellents, rat repellents, fungicides, deodorants, fungicides, and rust preventives. Moreover, these can also be used in combination with other chemicals such as preservatives and antifouling agents.

Representative examples of the above volatile drugs are listed below.

There are natural fragrances and artificial fragrances, and natural fragrances include animal fragrances such as Jacora, civet, kasdol, and ambergris, lavender oil, mustard oil, There are botanical fragrances made from plant essential oils such as lemon oil, orange oil, rose oil, camphor oil, sandalwood oil, and cypress oil.

Artificial fragrances include synthetic fragrances made of terpene compounds or aromatic compounds, isolated fragrances whose components are separated from essential oils mainly through fractional distillation, and mixtures of various other isolated fragrances, synthetic fragrances, natural fragrances, etc. This includes blended fragrances that have been adjusted to be suitable for practical use.

As rust inhibitors, inorganic and organic acid salts of organic amines such as dicyclohexylammonium nitrite, cyclohexylammonium carbonate, isopropylammonium benzoate, diisopropylammonium succinate, etc.
Aromatic acids such as benzoic acid and naphtholic acid; fatty acids having 6 to 10 carbon atoms such as caprylic acid, pelargonic acid, and capric acid; heterocyclic amines such as benzotriazole and methylbenzotriazole; dinitrobenzene and nitronaphthalene. Examples include nitro-substituted aromatic compounds such as hexamethylenetetramine and its derivatives, and one or a mixture of two or more of these may be used.

Specific examples of the other drugs mentioned above include food preservatives such as sorbic acid and dehydroacetic acid, thiabendazole, vinazine, and α-promuscinnamaldehyde.
(BCA) and other fungicides, DDT agents, BHC agents, drin agents, barathion agents, DDVP agents, PGP agents and other insect repellents and insecticides, formalin, salicylic acid, creosote, phenol, nitrofurazone, nitrofuryl acrylic acid amide Bactericidal agents such as Naramycin (product name: Tanabe Seiyaku Co., Ltd.), Ramtalin (product name: Matsushita Electric Works Co., Ltd.), rodent repellents such as cotomycin (product name: Osaka Kasei Co., Ltd.), phenylmercury acetate,
Examples include antifouling agents such as phenylmercury oleate, copper naphthenate, and copper oleate, and two or more of these agents may be used in combination depending on the purpose, use, etc.

Note that the volatility of these chemicals, the permeability of the membrane (film), the volatilization rate of the adsorbent, etc. differ depending on the components or component groups to be classified and stored. In addition, since there is a wide range of volatile drugs to which the present invention can be applied, it is not possible to limit these relationships individually, but preliminary tests are conducted each time, and in accordance with the spirit of the present invention, the drug components are determined. What is necessary is to determine the division, the material of the membrane, and its thickness.

[Example] The present invention will be explained in detail below using examples.

The lemon-based blended fragrance was divided into two components: a high-volatile component (top note) and a low-volatile component (middle note and end note). Glass container I with highly volatile components shown in Figure 1
The low-volatile components were stored in the small chamber 4 of the same container IA. This was sealed with a 0.2 mm thick film. However, a polyethylene film was used as the membrane 3 of the small chamber 4. Use vinyl acetate 1 as Komuro 4° River membrane 3°
A 5% ethylene-vinyl acetate copolymer film was used.

Although the stiffness was left for 3 months, the fragrance remained unchanged from the initial state and remained good.

(Comparative Example) 11 The lemon-based mixed fragrance described above was stored in a regular small bottle and left uncovered for 3 months, but the fragrance changed significantly and lost the lemon-like fragrance. polyethylene film and ethylene-vinyl acetate copolymer film,
Even when each was used separately and covered with a lid, the scent changed after 3 months, making it unsuitable.

[Operations and Effects of the Present Invention] In the present invention, a highly volatile component or component group can be volatilized through a film with low permeability, and a low volatile JJ1 component or component group can be volatilized through a film with high permeability. Therefore, the composition of the gas volatilized from the volatile drug can be kept almost constant over a long period of time, so that the fragrance tone and medicinal efficacy do not change.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view of one embodiment of the volatilization device for volatile chemicals of the present invention, FIGS. 2 and 3 are cross-sectional views of a bag-like container of another embodiment, and FIG. FIG. 2 is a cross-sectional view of an embodiment having an adsorbent of 1A, IB, IC, 10: Container 2.30: Partition wall 3.3'+1i4.4゛, 4
0: Small chamber 5: Main body A, B, C, D: Component or component group 50: Adsorbent

Claims (6)

[Claims] (1) A volatile drug consisting of a multi-component liquid or solid,
By separating into multiple component groups with different volatilities and storing each component group in separate compartments, each component group volatilizes from each compartment, and the composition as a whole is almost the same as that of the volatile drug. A method for volatilizing a volatile agent, characterized in that a gas is volatilized. (2) The volatile drug is at least one drug selected from the group consisting of fragrances, repellents, insect repellents, rodent repellents, antifungal agents, deodorants, bactericidal agents, and rust preventives. Item 1. The method for volatilizing a volatile chemical according to item 1. (3) Consisting of a plurality of small chambers consisting of a plurality of membranes with different drug permeability, or a plurality of small chambers each having the above-mentioned membranes on a part of the outer wall, and containing a multi-component volatile drug with different volatilities. A volatilization tool for a volatile chemical, characterized in that each of the component groups separated into a plurality of component groups is stored in each of the small chambers. (4) The device for volatilizing a volatile drug according to claim 3, wherein the membranes having different drug permeability are thermoplastic synthetic resin films. (5) A volatile drug consisting of a multi-component liquid or solid,
A device for volatilizing a volatile chemical, characterized in that it is separated into a plurality of component groups having different volatilities, and each component group is impregnated and adsorbed in an adsorbent having a different volatilization rate. (6) The volatile chemical volatilization tool according to claim 5, wherein the adsorbent is a sheet-like material.