JP2928568B2 - Transpiration method and evaporator - Google Patents

Description

The present invention relates to a transpiration method and a transpiration device having a time indicator function. More specifically, the effective period of a product having a limited effective period, such as an insect repellent, a repellent, a fragrance, an antibacterial agent, an antibacterial agent, a deodorant, and a drug, is visually determined by a color change using a pigment. And a transpiration device having a time indicator function for the transpiration.

[Prior art and its problems] Various time indicators using a change in color tone have been conventionally proposed. They use indicators that change color due to chemical reactions such as neutralization and redox reactions, and those that use indicators that change color upon contact with atmospheric O ₂ gas or CO ₂ gas. Separated.

However, each of these uses a complex reaction mechanism or the like for its color change, and since these reactions are affected by, for example, temperature or light, the color change is accurate during the product life. However, there is a disadvantage that the original purpose of the time indicator is not achieved and its use is considerably restricted. In addition, conventionally known time indicators require complicated operations for their manufacture, which leads to an increase in cost, which is disadvantageous in terms of economy, and is generally limited to a specific size. Therefore, there is a drawback that it cannot be cut to an arbitrary size in practical use.

In recent years, various fragrances have been developed,
As a method of detecting the consumption of the fragrance, for example, a method of confirming the remaining amount of the fragrance, a method of sensing a decrease in fragrance by smell, a method of using an end point discriminator, and the like are employed.

However, in these methods, the fragrance remains even if the volume of the fragrance is reduced due to the environmental conditions in which the fragrance is used, or the end point indicated by the end point discriminator and the end point of the actual fragrance. May not coincide with each other, and it can be used as a standard for detecting the state in which the fragrance has been consumed.

[Problem to be Solved by the Invention] An object of the present invention is to eliminate all the drawbacks of the conventional time indicator, and to cause a color change with a very simple mechanism without being particularly limited in use conditions. Evaporation methods such as air fresheners with a new time indicator function that can accurately match the color change with the shelf life of the product, are easy to manufacture, store and use, and are economical and low cost. It is an object of the present invention to provide an evaporator such as a fragrance evaporator capable of easily and accurately detecting a consumed state such as the above.

[Means for Solving the Problems] The present invention provides (A) an electron-donating color-forming organic compound, (B) a compound having a phenolic hydroxyl group having a boiling point of 200 ° C. or more at normal pressure, and (C) a normal pressure. And evaporating a liquid agent comprising a liquid organic compound and an active ingredient at a normal temperature having a boiling point of 50 to 300 ° C. through a replenishing member, causing a color change near the end of the volatilization of the component (C). (C) via a replenishing member supplied with (A) an electron-donating color-forming organic compound and (B) a compound having a phenolic hydroxyl group having a boiling point of 200 ° C. or more at normal pressure. Boiling point at normal pressure
(C) evaporating a liquid agent comprising a liquid organic compound and an active ingredient at a normal temperature of 50 to 300 ° C.
A vaporization method characterized by producing a color change near the end of the volatilization of the component, (A) an electron-donating color-forming organic compound, and (B) a phenolic hydroxyl group having a boiling point of 200 ° C. or more at normal pressure. A liquid comprising an organic compound and an active ingredient which is liquid at room temperature and which has a boiling point of 50 to 300 ° C. at normal pressure, a container containing the liquid, and a replenishing member for evaporating the liquid. A vaporizer characterized by producing a color change near the end of the volatilization of the component (C), and (C) an organic compound which is liquid at room temperature and has a boiling point of 50 to 300 ° C. at normal pressure and is effective. A liquid agent comprising the components, a container containing the component (C), a replenishing member for evaporating the component (C), (A) the electron-donating color-forming organic compound supplied to the replenishing member, and (B) Pheno having a boiling point of 200 ° C or higher at normal pressure It consists of a compound having a Le hydroxyl,
The present invention relates to a vaporizer characterized in that a color tone change occurs near the end of the volatilization of the component (C).

[Effects and Examples] The evaporation method according to the present invention comprises a volatilization component (C) as a volatile component (an organic compound which is liquid at normal temperature and has a boiling point of 50 to 300 ° C at room temperature and an active ingredient such as a fragrance is supplied via a replenishing member. (A) an electron-donating color-forming organic compound and (B)
A compound having a phenolic hydroxyl group having a boiling point of 200 ° C. or higher at ordinary temperature is coexisted with the component (C) or is supplied to a replenishing member in advance.

In the evaporation method of the present invention, when the volatile component as the component (C) is evaporated through the supply member, the supply member is not colored while the volatile component is being supplied to the supply member. When the supply of the component (C) to the supply member is stopped and the component (C) in the supply member volatilizes and reaches a certain amount of volatilization, the desensitizing effect of the component (C) is weakened. The color developing action of the compound having a hydrophilic hydroxyl group is enhanced, and coloring of the electron-donating color-forming organic compound starts. In addition, if the volatilization of the component (C) continues, the coloring becomes deeper, and finally these volatilizations disappear or
Or, the original color tone of the electron-donating color-forming organic compound appears in the vicinity thereof, and the end point of volatilization becomes clear.

Since the change in color tone is a clear change from colorless to colored in the present invention, the end point of the fragrance or the like can be accurately visually recognized. In the present invention, the color tone of the replenishing member is reversibly changed, and when the replenishing member contacts a sufficient amount of the component (C), the color is erased.
It can be used again and again.

The dye used in the present invention is not particularly limited as long as it is an electron-donating color-forming organic compound.

Examples of the electron-donating color-forming organic compound include crystal violet lactone, malachide green lactone, rhodamine β-lactone, leucomalachide green, leuco crystal violet, 2-N, N-dibenzylamino-6-diethylaminofluoran. , 6-
Diethylamino-benzo [α] -fluoran, 1,3-dimethyl-6-diethylaminofluoran, 3,6-bis (diethylamino) fluoran-γ- (4′-nitro)
-Anilinolactam, 2- (2-chloroanilino) -6
-Dibutylaminofluorane, 3,7-bis (dimethyl)
-10-benzoylphenothiazine, 2-anilino-3-
Methyl-6- (N-ethyl-N-furfurylamino) fluoran and the like can be mentioned, but the present invention is not limited only to such an example. These electron-donating color-forming organic compounds can be used alone or in combination of two or more, but may be used in combination with other dyes.
For example, when a yellow dye and an electron-donating color-forming organic compound that emits red color are used in combination, the color becomes yellow at first and the end point is orange.

The amount of the electron-donating color-forming organic compound used is appropriately determined so that a change in the color tone of the replenishing member becomes clear, and is usually selected from the range of about 0.01 to 100 mg per 100 cm ² of the base material of the replenishing member. desirable.

As the compound having a phenolic hydroxyl group used in the present invention, a compound having a phenolic hydroxyl group having a boiling point of 200 ° C. or more at normal pressure (atmospheric pressure) is preferably used.
The reason why the boiling point is set to 200 ° C. or higher at normal pressure is that if the temperature is lower than 200 ° C., there is a case where the color is not formed due to volatilization. Representative examples of the compound having a phenolic hydroxyl group include phenols having various substituents, such as monophenols and polyphenols. Specific examples of the compound having a phenolic hydroxyl group include, for example, tert-butylphenol, nonylphenol, octylphenol, α-
Naphthol, β-naphthol, guaiacol, eugenol, o-phenylphenol, p-phenylphenol, dihydroxynaphthalene, methyl p-oxybenzoate, methyl, propyl, butyl, 2-ethylhexyl, octyl, dodecyl 1,2-dioxynaphthalene, protocatechuic acid, methyl, ethyl, propyl, gallic acid, methyl, ethyl, propyl, tannic acid, virphenol A, bisphenol B, bisphenol S, 4,4 ' Examples include -dihydroxybenzophenone, 4-hydroxyacetophenone, tert-amylphenol, BHT, and phenolic resin, but the present invention is not limited to such examples.

The amount of the compound having a phenolic hydroxyl group used is:
It depends on the amount of the electron donating color-forming organic compound used,
Usually 10 per 10 parts by weight of electron donating color-forming organic compound
It is desirable to select from the range of about 500 parts by weight.

Examples of the organic compound that is liquid at ordinary temperature used in the present invention include an organic compound that has a boiling point of 50 to 300 ° C. at ordinary pressure (atmospheric pressure) and liquid at ordinary temperature. Where the boiling point is 50-300 at normal pressure
When the boiling point is less than 50 ° C, it evaporates in a short time, so that only a very short time indicator function is exhibited, and when it exceeds 300 ° C, the volatilization is excessive. This is because the time indicator function becomes too slow and the time indicator function cannot be sufficiently exhibited. Such organic compounds may be those that do not adversely affect the scent of the fragrance used, and typical examples thereof include octanol, nonyl alcohol, decanol, benzyl alcohol, phenylethyl alcohol, citronellol, geraniol, hexyl cellosolve, and the like. Alcohols such as butyl carbitol; dimethyl phthalate, diethyl phthalate, di-n-propyl phthalate, di-isopropyl phthalate, di-n-butyl phthalate, di-isobutyl phthalate, diethyl adipate, adipic acid Jee
n-propyl, di-isopropyl adipate, di-n-butyl adipate, di-isobutyl adipate, diethyl succinate, di-isopropyl succinate, di-succinate
n-butyl, dimethyl sebacate, diethyl sebacate, n-butyl benzoate, n-amyl benzoate, n-hexyl benzoate, benzyl benzoate, phenylethyl phenylacetate, linalyl propionate, n-butyl laurate, laurin Isobutyl acid, n-amyl laurate,
Isoamyl laurate, ethyl laurate, ethyl caprate, n-amyl caprate, n-heptyl caprate, methyl myristate, isopropyl myristate,
Esters such as tributyrin and geranyl acetate; ketones such as dipentyl ketone, propiophenone, 5-undecanone, and butyrophenone; dibenzyl ethyl ether, dihexyl ether, diethylene glycol di-
ethers such as n-butyl ether; N, N-diethyl-
Examples include nitrogen-containing compounds such as m-toluamide; compounds such as hydrocarbons; however, the present invention is not limited thereto. These compounds are used alone or in combination of two or more.

The amount of the organic compound that is liquid at room temperature is the type,
For example, it may be appropriately adjusted according to the effective period of the active ingredient such as a fragrance and the size of the evaporator of the present invention. It is preferably selected from the range of about 0.01 to 200 parts by weight based on parts.

Examples of the fragrance used as an active ingredient in the present invention include animal fragrances such as jasmine, spirit cats, and Ryanobu incense; Abies oil, ajokun oil, almond oil, angelica root oil, pagel oil, bergamot oil, and perch oil. , Borebarose oil, Kayabuchi oil, Gananga oil, Capsicum, Caraway oil, Cardamom oil, Cassia oil, Celery oil, Cinnamon oil, Citronella oil, Cognac oil,
Coriander oil, cupep oil, cumin oil, camphor oil, jill oil, estgolan oil, eucalyptus oil, fennel oil, garlic oil, ginger oil, grapefruit oil, hop oil, juniper perry oil, laurel leaf oil, lemon oil, lemongrass oil , Ropage oil, mace oil, nutmeg oil, mandarin oil, tangerine oil, mustard oil, pepper oil, orange flower oil, onion oil, pepper oil, orange oil, sage oil, star anise oil, turpentine oil, wormwood oil, vanilla Vegetable flavors such as bean extract; hydrocarbons such as pinene and limonene; alcohols such as linalool, geraniol, citronellol, menthol, borneol, benzyl alcohol, anis alcohol, β-phenylethyl alcohol; phenols such as anethole and eugenol aldehydes such as n-butyl aldehyde, isobutyraldehyde, hexyl aldehyde, heptyl aldehyde, n-nonyl aldehyde, nonadienal, citral, citronellal, benzaldehyde, cinamic aldehyde, heliotropin, and varnish; methyl amyl ketone, methyl nonyl ketone, diacetyl, Ketones such as acetylpropionyl, acetylbutyryl, carboxyl, mentone, acetophenone, p-methylacetophenone, and ionone; amylbutyrolactone, ethyl methylphenylglycidate, γ-
Lactones or oxides such as nonyl lactone, coumarin and cineol; methyl formate, isopropyl formate, linalool formate, ethyl acetate, octyl acetate, menthyl acetate, benzyl acetate, cinnamyl acetate, butyl propionate, isoamyl acetate, iso Isopropyl butyrate, granyl isovalerate, allyl caproate, butyl heptylate, octyl caprylate, methyl heptine carboxylate,
Ethyl perahagonate, methine octincarboxylate, isoiacyl caprate, methyl laurate, ethyl myristate, ethyl benzoate, benzyl benzoate, methyl phenylacetate, phenylacetate, methyl cinnamate, cinnamyl cinnamate, methyl salicylate, anisic acid Synthetic or extracted flavors such as esters such as ethyl, methyl anthranilate, ethyl pyruvate, and ethyl α-butyl butyrate may be mentioned, but the present invention is not limited to such examples. These fragrances can be used alone or
A mixture of more than one species is used. In addition, a volatile retention agent such as patchouli oil, a modulator such as eugenol, and various additives may be added to these fragrances.

The amount of the fragrance used may be appropriately adjusted depending on, for example, its validity period and the size of the evaporator of the present invention, and cannot be unconditionally determined. It is preferably selected from the range of about 0.01 to 200 parts by weight based on parts by weight.

In the present invention, as described above, a coexistence system in which three kinds of essential components are mainly mixed is used. The first component is an electron-donating color-forming organic compound as a color component,
The second component is a compound having a phenolic hydroxyl group as an electron acceptor. When the first and second components come in contact with each other, the color is instantaneously changed from colorless to colored. However, since the color development state is not always stable, when an organic compound that is liquid at room temperature is added as the third component, it is easily dissociated, that is, decolored, by the action of a so-called "desensitizer". This relationship is represented by the formula: electron-donating color-forming organic compound electron-acceptor desensitizer, which develops or decolors when the electron acceptor moves left or right.

In the evaporation method of the present invention, the liquid organic compound is gradually volatilized at room temperature as a desensitizer in the replenishing member, and as a result, the above relationship is not established when the remaining amount reaches a certain level, and the electron acceptor is moved to the left. When the color shifts, color development starts, and volatilization continues, the color tone becomes darker, the original color tone is obtained at or near the end point, and the end point is determined (at this time, it may be compared with the color sample at the end point).

When the above-mentioned electron donating color-forming organic compound and the compound having a phenolic hydroxyl group are supplied to the replenishing member used in the present invention in advance, the base material of the replenishing member is impregnated, coated or dropped. It is made.

The material of the base material of the replenishing member is not particularly limited as long as it can be replenished, and may be the same as conventionally used various types, and is usually paper, nonwoven fabric, woven fabric, or other inorganic fiber and / or organic fiber. Fiber sheets, synthetic resin foams, porous bodies, wooden bodies, laminated sheets of these and synthetic resin sheets, and the like can be exemplified, but the present invention is not limited to only these examples.

Further, it is desirable that these base materials have a color tone that makes it easy to visually judge a change in color tone, and it is particularly preferable that the base material has a white or light color. The replenishing member obtained by treating the above-mentioned mixture on a base material is suitably used as it is or for use in products having an expiration date by cutting it into an arbitrary size with scissors or a knife at the time of use.

Evaporation method and evaporator of the present invention, insect repellent, repellent,
It can be applied to products with an expiration date such as insecticides, fragrances, deodorants, antibacterial agents, antibacterial agents, and pharmaceuticals.

Furthermore, in the evaporation method and evaporator of the present invention,
The replenishing member may be covered with a film of polyethylene, polypropylene, ethylene-vinyl acetate copolymer or the like in order to adjust the volatility of the active components such as organic compounds and fragrances which are liquid at room temperature as essential components.

In the evaporator of the present invention, the replenishing member is substantially colorless at the start of its use, but the organic compound which is liquid at room temperature evaporates to some extent with time, and the color-reducing action of the organic compound which is liquid at room temperature is lost. , The coloring starts, the volatilization ends, or the original color tone of the electron-donating color-forming organic compound incorporated in the vicinity of the volatilization appears, and the end point is reached.

 Next, the evaporator according to the present invention will be described with reference to the drawings.

FIG. 1 is a schematic sectional view of the evaporator of the present invention. As the container (1), for example, a transparent resin such as polycarbonate or AS resin, glass, or the like, which can check the contents from the outside, is preferable. The size and shape of the container (1) are not particularly limited, and it is usually desirable to appropriately adjust the size and shape according to the use of the evaporator of the present invention.
In the container (1), a liquid mixture (2) comprising an electron-donating color-forming organic compound, a compound having a phenolic hydroxyl group, and an organic compound which is liquid at room temperature and an active ingredient such as a fragrance is injected. In the liquid mixture (2) in the container (1), a supply member (3) whose base material is made of, for example, felt is immersed. In order to maintain the shape of the supply member (3), the supply member (3) may be inserted into a metal tube (4) made of a metal such as aluminum. When the air in the container (1) comes into direct contact with the outside air of the container (1), the liquid mixture (2)
Evaporates out of the container (1) in a short time, so that the container (1)
Is preferably provided with a seal plug (5) made of, for example, rubber or cork in order to prevent the air in the container (1) from being released to the outside.

The replenishing member (3) immersed in the mixture (2) in the container (1) absorbs the mixture (2) to the upper end of the replenishing member (3) by capillary action. The replenishing member (3) that has absorbed the mixture in this way evaporates active components such as organic compounds and fragrances contained in the replenishing member (3) that are liquid at room temperature in a portion that comes into contact with the outside air, and the remaining organic compounds and fragrances and the like remain. Before and after the active ingredient disappears, the color tone of the replenishing member (3) changes.

As described above, the evaporator of the present invention comprises: a container (1);
It is composed of a mixture (2) and a supply member (3),
Further, a seal plug (5) may be provided as necessary. In the present invention, the form of the evaporator is not particularly limited.

Further, in the evaporator of the present invention, the electron-donating color-forming organic compound and the compound having a phenolic hydroxyl group,
It may be supplied to the supply member (3) in advance.

Hereinafter, the evaporation method and the evaporator of the present invention will be described in more detail with reference to Reference Examples and Examples, but the present invention is not limited to only these Examples.

Reference Examples 1 to 46 Electron-donating color-forming organic compounds shown in Table 1 (Component A)
1 mg, compound having a phenolic hydroxyl group (component B) 5 mg
Then, 0.5 ml of an acetone solution containing 100 mg of a liquid organic compound (component C) at room temperature was uniformly impregnated into a filter paper (No. 2) having a diameter of 7 cm to obtain a time indicator. Each of the obtained time indicators was hung in a constant temperature room at 40 ° C., and the presence or absence of a time-dependent color tone change was visually inspected. The results are shown in Table 1.

The meanings of the abbreviations used in each of the reference examples and examples are as follows.

O-DCF: 1,3-dimethyl-6-diethylaminofluoran P-DCF: 3,6-bis (diethylamino) fluoran-γ-
(4'-nitro) -anilinolactam G-DCF: 2-N, N-dibenzylamino-6-diethylaminofluoran R-DCF: 6-diethylamino-benzo [α] -fluoran LCV: Leuco Crystal Violet CVL: Crystal violet lactone LMG: Leucomalachide green RL: Rhodamine β-lactam MGC: Malachide green lactone BMLM: 3,7-bis (dimethylamino) -10-benzoylphenothiazine TH-107: 2- (2-chloroanilino)- 6-diethylaminofluoran CF-51: 2-anilino-3-methyl-6- (N-ethyl-
N-furfurylamino) -fluorane resin top PS-2880: manufactured by Gunei Chemical Co., Ltd., phenolic resin The following abbreviations in Reference Examples and Examples are the same.

From Table 1, it can be seen that the liquid mixture used in the present invention has a clear change in color tone, and the change in color tone sufficiently exerts the time indicator function.

Reference Examples 47 to 63 The electron donating color-forming organic compounds (component A), the compound having a phenolic hydroxyl group (component B), and the organic compound liquid at room temperature (component C) shown in Table 2 are shown in Table 2, respectively. It was weighed to the indicated amount, and impregnated with φ7 cm circular filter paper to produce a time indicator.

Each of the obtained time indicators was hung at room temperature, and the time when color change was recognized was visually judged, and the validity period of each time indicator was examined. The results are shown in Table 2.

From Table 2, it can be seen that the liquid mixture used in the present invention can freely set the time (end point) at which the color tone change is recognized by adjusting the type and test amount of the liquid organic compound at normal temperature used. Recognize.

Reference Example 64 Polyethylene was coated on one side with a 20 ml acetone solution containing 10 mg of diethyl phthalate, 0.1 mg of O-DCF, and 0.4 mg of bisphenol A, and the polyethylene was uniformly coated on white wood (2 × 2 cm) treated with an adhesive. To give a tack-sealed time indicator of the present invention.

Since it takes about 3 months for the color change,
It could be used as a three-month time indicator.

Example 1 15 ml of Isopar H (trade name, manufactured by Esso Oil Co., Ltd.) as a liquid organic compound at room temperature, 1.5 g of di-isopropyl adipate, 1.5 g of a fragrance (rose), and P as an electron-donating color-forming organic compound -A mixture consisting of 2 mg of DCF and 200 mg of bisphenol A was prepared.

The obtained mixture was placed in a 50 ml glass container (1) as shown in FIG.
The mixture (2) is impregnated with a refill core (3) made of felt filled in a metal tube (4) made of aluminum (4 mm), and the upper end of the container (1) is sealed with a rubber sealing stopper (5). I got an evaporator.

Next, a circular filter paper of φ9 cm (No.
2) was installed, the evaporator was placed at room temperature, and the relationship between the disappearance of the fragrance and the color development was examined. As a result, pink coloration occurred throughout the filter paper before and after the disappearance of the scent.

Thereby, the end of the fragrance could be easily determined visually.

Next, when the evaporator was prepared in the same manner as above by replacing the residue in the container (1) with a new mixture having the above composition, the color (pink) of the filter paper disappeared with the filling of the mixture. Could be reused. When the fragrance was evaporated again, the whole of the filter paper was colored deeper pink than the front face before and after the disappearance of the fragrance.

From the above, it can be seen that the evaporator of the present invention can be used repeatedly only by replenishing the mixture.

Reference Example 65 A plastic tray provided with three concave portions having an inner diameter of 3.3 cm was prepared, and a circular nonwoven fabric (diameter: 3 c
m, thickness: about 5 mm, basis weight: 800 g / m ² . Next, three kinds of mixtures were prepared to have the following compositions.

Next, the obtained mixtures A to C were respectively placed in the recesses of the tray, and were impregnated into a nonwoven fabric. After that, the upper surface of the tray was sealed with aluminum foil to obtain a fragrance evaporator.

After removing the aluminum foil on the surface impregnated with the mixture A of the obtained fragrance evaporator, use was started, and after the disappearance of the fragrance and the development of red color were observed, the surface of the surface impregnated with the mixture B was similarly observed. The aluminum foil was removed and started to be used. The disappearance of the scent and the development of green color were observed.
The aluminum foil on the side impregnated with was started to be used, and the disappearance of the scent and the development of blue-violet color were observed.

Example 2 The evaporator obtained in Example 1 was used. P- on the entire surface of the filter paper
2 ml of acetone solution of DCF 1 mg and bisphenol A 10 mg
Was uniformly applied and dried to develop a pink color. Next, the filter paper was placed on the tip of the supply core of the evaporator, and use of the evaporator was started.

As the mixture in the evaporator impregnates and spreads the filter paper,
The pink color of the filter paper disappeared, and eventually disappeared on the entire surface of the filter paper.

Further, evaporation of the fragrance proceeded, and pink color was generated on the filter paper before and after the fragrance disappeared.

From the above, it is understood that the evaporator can clearly know the end point of use.

Example 3 The evaporator shown in FIG. 2 was used. That is, a glass container (1) having a volume of 50 ml was prepared, and 20 ml of Isopar H (trade name of Esso Petroleum Co., Ltd.) as a liquid organic compound at room temperature, 3 g of diisopropyl adipate in the container (1) were prepared.
After injecting a mixture (2) consisting of 2 g of fragrance (Pinkweed) and 3 mg of O-DCF and 24 mg of bisphenol A as an electron-donating color-forming organic compound, an aluminum metal tube (4) is provided around the periphery, and transpiration is provided at the top. The replenishing wick (3) provided with the fabric-made artificial flower (6) prepared for use was placed in the container (1), and the container (1) was sealed with a rubber sealing stopper (5).

The surface of the shaft of the artificial flower (6) is provided with an aluminum pipe on the surface so that the shaft can be moved in the vertical direction, and the area covered by the aluminum pipe on the axis of the artificial flower (6) is adjusted. By doing so, the intensity of the fragrance can be adjusted.

When the obtained fragrance evaporator was left in a room, the axis of the artificial flower (6) whose aluminum pipe was not covered before and after the fragrance was extinguished turned orange.

Example 4 The evaporator shown in FIG. 3 was produced. That is, 50ml
A container (1) made of polycarbonate was prepared, and 25 ml of Isopar H (trade name, manufactured by Esso Oil Co., Ltd.) as a liquid organic compound at room temperature, 2 g of fragrance (rose), A mixture of 3 g of acid-n-propyl was injected.

Next, O-DCF 1 mg as an electron-donating color-forming organic compound
Evaporation section A impregnated with 8 mg of bisphenol A and bisphenol A
(7) Evaporation section (8) impregnated with 1 mg of G-DCF and 8 mg of bisphenol A, 1 mg of CLV and 8 mg of bisphenol A
Was fixed to the supply wick (3) via the metal tube (4).

Next, the refill wick (3) was inserted into the container (1), and the opening of the container (1) was sealed with a rubber seal stopper (5).

When use was started, the transpiration portion A (7), the transpiration portion B (8), and the transpiration portion C (9) changed color to orange, green, and violet, respectively, before and after the disappearance of the aroma.

[Effect of the Invention] In the evaporation method of the present invention, the liquid mixture used is
The end point can be determined by the volatilization of the organic compound which is liquid at ordinary temperature used in this process, and the end point can be easily adjusted in accordance with the used amount of the organic compound which is liquid at ordinary temperature.

Since the evaporator of the present invention uses the liquid mixture, the expiration date (end point) can be accurately visually determined. Furthermore, by replenishing a liquid organic compound and / or fragrance at a boiling point of 50 to 300 ° C. at normal pressure, it can be used repeatedly.

Further, in the evaporator of the present invention, the mechanism of the color tone change is very simple in itself, and is not affected by environmental conditions such as light and humidity. Because of the simplicity, the evaporator of the present invention is economically advantageous, and has effects such as being able to be downsized.

[Brief description of the drawings]

1 to 3 each show a schematic sectional view of the evaporator of the present invention. (Main symbols in the drawings) (1): Container (2): Mixture (3): Supply member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-179640 (JP, A) JP-A-63-212364 (JP, A) Jiko 61-23346 (JP, Y2) (58) Field (Int.Cl. ⁶ , DB name) G04F 1/00 A01N 25/18 102 C09K 3/00

Claims (4)

(57) [Claims] (A) an electron-donating color-forming organic compound,
(B) a compound having a phenolic hydroxyl group having a boiling point of 200 ° C. or more at normal pressure and (C) a boiling point of 50 to 300 ° C. at normal pressure
And evaporating a liquid comprising an organic compound and an active ingredient which are liquid at normal temperature through a replenishing member, wherein a color tone change occurs near the end of the volatilization of the component (C). . 2. A replenishing member to which (A) an electron-donating color-forming organic compound and (B) a compound having a phenolic hydroxyl group having a boiling point of 200 ° C. or more at normal pressure is supplied. Comprising evaporating a liquid formulation comprising a liquid organic compound and an active ingredient at room temperature having a boiling point of 50 to 300 ° C.,
A vaporization method, wherein a color tone change occurs near the end of the volatilization of the component (C). (3) an electron-donating color-forming organic compound (A),
(B) a compound having a phenolic hydroxyl group having a boiling point of 200 ° C. or more at normal pressure and (C) a boiling point of 50 to 300 ° C. at normal pressure
A liquid comprising an organic compound and an active ingredient which is liquid at room temperature, a container for accommodating the liquid, and a replenishing member for evaporating the liquid, in the vicinity of the end of the volatilization of the component (C). An evaporator characterized by producing a color change. 4. A liquid preparation comprising (C) an organic compound and an active ingredient which are liquid at normal temperature and have a boiling point of 50 to 300 ° C., a container for accommodating the component (C), and A supply member for evaporating, and (A) supplied to the supply member.
Electron-donating color-forming organic compound and (B) a boiling point at normal pressure
An evaporator comprising a compound having a phenolic hydroxyl group at a temperature of 200 ° C. or higher and producing a color change near the end of the volatilization of the component (C).