JPH10211978A - Full injection aerosol device - Google Patents

Abstract

(57) [Problem] To provide a full injection aerosol device capable of uniformly spraying an aerosol composition in a closed space by solving the problems of the conventional full injection aerosol device. SOLUTION: The propellant / stock solution ratio (volume) of the aerosol composition is 70/30 to 90/10, and the whole amount of the aerosol composition is sprayed in an amount that can be uniformly sprayed on a floor area of 10 to 16.5 m ^2. A full-aerosol aerosol device characterized in that the time required to perform is less than one minute. Preferably, the hole area ratio of the under tap / stem of the valve is 7 to 12, and the under tap hole area is 3 to 5 mm ² , and more preferably, the stem / nozzle hole area ratio is 0.2.
~ 2 and has a vapor-tap hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerosol product, and more particularly, to a limited space.
The present invention relates to an aerosol apparatus that uses one can of an aerosol product in a short period of time by spraying the entire amount at once.

[0002]

2. Description of the Related Art An aerosol product obtained by dissolving an active ingredient such as an insecticide or a deodorant in a small amount of a solvent and placing the solution and a propellant in a pressure-resistant container equipped with a spraying device is known as an insecticide of another dosage form. ,
For example, it is easier to use than dusts, emulsions, oils, fumigated products, smoked products, and the like, and has the advantages of not causing dirt around it. In insecticide aerosol products, aerosol compositions are sprayed directly on the target pests to kill the insects, but recently, a can of aerosol products is placed in the center of the floor of an enclosed space where pests are to be eliminated. It has been practiced to spray the entire amount of the aerosol composition in a can at one time to control pests in a closed space. This type of can of aerosol products is called "full injection aerosol device", and it is important to be able to obtain the effect effectively in pest control technology in enclosed space using this full injection aerosol device. Is to spray the aerosol composition as uniformly as possible in the enclosed space (especially its floor).

For this purpose, Japanese Unexamined Patent Publication Nos. 4-45735 and 6-169676 propose a full-injection aerosol apparatus having a plurality of injection ports. The spread of the sprayed aerosol composition over the floor area is still not sufficient. That is, it is difficult to diffuse the contents widely in the whole room not only on the floor but also in the height direction of the ceiling with the conventional full-amount aerosol device. In addition, even if only the floor surface is taken, there is variation in the diffusion of the contents in the direction from the center of the floor to the wall surface. This is because the amount of the composition sprayed from the apparatus per unit time (hereinafter referred to as the spraying speed or spraying ability of the full-aerosol aerosol apparatus) is small, so that the aerosol composition cannot be uniformly spread over the entire room. Seem. Furthermore, there has been proposed a device (JP-A-4-45735) in which the injection portion of the injection aerosol device is improved to enhance the aerosol composition injection capability. However, this was still unsatisfactory as a full injection aerosol device.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional total injection aerosol apparatus and to provide a full injection aerosol apparatus capable of uniformly spraying the aerosol composition in a closed space. is there. In particular, in order to be able to spray the aerosol composition evenly in the closed space, it is preferable to spray as high as possible into the space. An object of the present invention is to provide a full-amount aerosol device capable of performing the above-described operations.

[0005]

SUMMARY OF THE INVENTION The above problems in the conventional full injection aerosol device are solved by the following full injection aerosol device of the present invention. (1) Propellant / stock solution ratio (volume) of 70/30 to 90
/ 10, and the injection time per floor area of 10 to 16.5 m ² is within 1 minute. (2) Under tap of the valve of the aerosol device /
The full-amount aerosol device according to (1), wherein the hole area ratio of the stem is 7 to 12 and the under tap hole area is 3 to 5 mm ² . (3) The full-amount aerosol device according to (1) or (2), wherein the stem / nozzle hole area ratio is 0.2 to 2. (4) The full-injection aerosol device according to any one of (1) to (3), having a vapor tap hole.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the above (1), a floor area of 10
And ～16.5M ² per injection time is within 1 minute, the sealed entire space of the floor area 10～16.5M ^2, when jetted in a state of being erected in the center of the chamber, at least the entire floor Means that the aerosol composition can be sprayed in an amount that can be evenly sprayed within one minute, and is a full spray aerosol device capable of achieving the effects of the present invention. In other words, when the above amount of the aerosol composition is sprayed at a rate of spraying within 1 minute, the composition can be uniformly spread over a floor area of 10 to 16.5 m ² . Therefore, if the floor area of the enclosed space to which the aerosol composition is to be sprayed is larger than the floor area, a plurality of full-aerosol aerosol devices of the above-mentioned capacity are used,
What is necessary is just to spray using the apparatus with a larger spraying ability. It should be noted that the full injection aerosol device of the present invention may have a single injection port (also referred to as a nozzle or an injection port) or may have a plurality of injection ports.

[0007] As in the case of the conventional aerosol injection device, the full-amount injection aerosol device of the present invention also includes a solution filled with a drug, a container filled with a propellant (in some cases, a compressed gas), and the solution and the propellant. And a valve part for injecting the aerosol composition. Table 1 shows the dimensions and the diameter ratios (the diameters of the holes of the main part) of each part of the valve section of the full-amount injection aerosol device of the present invention.

[0008]

[Table 1]

As can be seen from Table 1, the valve portion of the apparatus of the present invention is designed so that the diameter of the injection hole, the diameter of the stem hole, and the diameter of the under tap become larger in this order.
Therefore, the aerosol composition is designed to be sprayed from the injection port of the apparatus of the present invention so as to satisfy the diffusion surface in the height direction and the plane direction which cannot be obtained from the apparatus described in the above publication. . For this reason, the aerosol composition is sprayed higher from the apparatus of the present invention, and is evenly spread over a larger floor area. Since the valve portion of the device of the present invention has the above-described configuration, by spraying with the device of the present invention, the amount of the aerosol composition adhering to the floor surface does not decrease, and the space in the height direction is also reduced. As a result, the contents are spread evenly, so that excellent effects can be achieved in insecticide, sterilization, deodorization, aroma, etc. of the whole room. In addition, since it spreads evenly, dirt and wetness derived from the contents can be reduced.

FIG. 1 shows an example of a valve portion of the full-amount injection aerosol device of the present invention for better understanding of the present invention. The structure of the valve portion 16 will be schematically described with reference to FIG. FIG. 1 is a diagram showing a state where the push button 12 is not pressed. In this state, since the stem hole 4 is sealed with the stem rubber 2, the space 6 and the stem center space 5 in the container portion of the aerosol device are not connected. In use, when the push button 12 of the valve section 16 is pressed, the spring 8 is pressed and shrunk by the stem 1, the stem 1 is pushed down, the stem hole 4 comes off the stem rubber 2, and the space 6 and the stem Communicated with the central gap 5,
The aerosol composition (containing the propellant) in the container portion of the aerosol device is supplied to the stem center cavity 5 and at the same time, the stem center cavity 5 of the stem 1 and the injection port 7 are communicated, so that the aerosol composition is injected from the injection port 7. Is done. Since the push button 12 of the full-amount aerosol device of the present invention is fixed by a well-known stopper (not shown) so as not to return once it is depressed, the aerosol composition in the container portion is entirely ejected.

A mounting cup provided with the housing 3, the stem rubber 2 and the spring 8 connects and fixes the container of the apparatus and the housing 3. When the push button 12 is depressed, the stem 1 is moved to the inner surface of the housing 3. Is slid while maintaining airtightness, so that the aerosol composition can be supplied to the injection port 7 through the space 6 of the stem 1 and the center space 5 of the stem by the mechanism described above. The gasket rubber 13 attached to the mounting cup keeps the inside of the container airtight to the atmosphere (outside). Further, the vapor tap hole 11 provided in the housing 3 is provided at an upper portion of the container portion (above the solution).
Is a hole for supplying gas to the space 6 of the stem 1, and some aerosol devices are not provided.

In the present invention, dimethyl ether, liquid propane gas (LPG), n-butane, isobutane, propane, isopentane, n-pentane, cyclopentane, propylene, n-butylene, isobutylene, ethyl ether, carbonate Gas and chlorofluorocarbon gas (HFCFC22, 123, 124, 4
1b, 142b, 225, HFC125, 134a, 1
43a, 152a, 12, 227a and the like. In the present invention, examples of the solvent include water and alcohols such as methanol, ethanol, isopropanol, ethylene glycol, diethylene glycol monobutyl ether, and ethylene glycol monomethyl ether; ketones such as acetone, methyl ethyl ketone, and methyl isobutyl ketone; For example, methyl acetate, ethyl acetate, butyl acetate and the like, other ethyl ethers and the like, and aliphatic hydrocarbons: for example, n-hexane, kerosene, kerosene, n-pentane, isopentane, cyclopentane and the like can be mentioned. These solvents may be used as a mixture.

In the present invention, the active ingredient includes insecticides, fungicides, acaricides, repellents, fragrances, deodorants and the like. As the insecticide, it is preferable to use a pyrethroid-based compound from the viewpoint of safety, and typical ones are as follows. Dl-3-allyl-2-methyl-4-oxo-2-cyclopentenyl dl-cis / trans-chrysanthemate (generic name arelesline: trade name pinamine: manufactured by Sumitomo Chemical Co., Ltd.) dl-3-allyl -2-Methyl-4-oxo-2-cyclopentenyl d-cis / trans-chrysanthemate (trade name: Pinamine Forte: manufactured by Sumitomo Chemical Co., Ltd .; hereinafter, referred to as "Pinamine Forte"). Dl-3-allyl -2-Methyl-4-oxo-2-cyclopentenyl d-trans-chrysanthemate (trade name: Bioarrestrin: manufactured by Yukraf) d-3-allyl-2-methyl-4-oxo-2-cyclopentenyl d -Trans-Chrysanthemato (trade name: Exulin: manufactured by Sumitomo Chemical Co., Ltd .; brand name: Sviol: manufactured by Yukuraf Co., Ltd .; Ior ")

(5-benzyl-3-furyl) methyl
d-cis / trans-chrysanthemate (general name: resmethrin, trade name: Chrislon Forte: manufactured by Sumitomo Chemical Co., Ltd .; hereinafter, referred to as "chryslon forte"). 5-propagyl-2-furylmethyl-d-cis / trans -Chrysanthemate (generic name Flamethrin, trade name Pinamine D Forte: manufactured by Sumitomo Chemical Co., Ltd., hereinafter referred to as "Pinamine D Forte").-(+)-2-Methyl-4-oxo-3- (2-propynyl) -2-cyclopentenyl (+)-cis / trans-chrysanthemate (general name: praretrin, trade name: ethok: manufactured by Sumitomo Chemical Co., Ltd .; hereinafter, referred to as "etok") dl-3-allyl-2-methyl-4 -Oxo-2-cyclopentenyl-dl-cis / trans-2,2,3,
3-tetramethylcyclopropane carboxylate (general name terrareslin: manufactured by Sumitomo Chemical Co., Ltd .; hereinafter, referred to as "terraresulin")

(1,3,4,5,6,7-hexahydro-1,3-dioxo-2-isoindolyl) methyl-
dl-cis / trans-chrysanthemate (general name: phthalsulin, trade name: neopinamine: manufactured by Sumitomo Chemical Co., Ltd.)-(1,3,4,5,6,7-hexahydro-1,3-
Dioxo-2-isoindolyl) methyl-d-cis / trans-chrysanthemate (brand name neopinamine forte: manufactured by Sumitomo Chemical Co., Ltd.) 3-Phenoxybenzyl-d-cis / trans-chrysanthemate (generic name) Phenothrin, trade name Smithrin: manufactured by Sumitomo Chemical Co., Ltd.) 3-Phenoxybenzyl-dl-cis / trans-3
-(2,2-dichlorovinyl) -2,2-dimethyl-1
-Cyclopropanecarboxylate (generic name: permethrin, trade name: Exmin: manufactured by Sumitomo Chemical Co., Ltd.)-(±) α-cyano-3-phenoxybenzyl (+)-
Cis / trans-chrysanthemate (generic name cyphenothrin, trade name gochelate: manufactured by Sumitomo Chemical Co., Ltd.) (±) α-cyano-3-phenoxybenzyl dl-
Cis / trans-3- (2,2-dimethyl-1-cyclopropanecarboxylate (generic name: cypermethrin)) Other insecticides such as carboxate-based proboxer, oxadiazole-based methoxadiazon, and organic phosphorus DDVP etc. can be mentioned as a system thing.

Typical examples of the insect repellent which can be blended include the following substances.・ 2,3,4,5-bis (△ ₂ -butylene) -tetrahydrofurfural ・ di-n-propylisocincomeronate ・ di-n-butylsuccinate ・ 2-hydroxyethyloctyl sulfide ・ 2-t- Butyl-4-hydroxyanisole 3-tert-butyl-4-hydroxyanisole 1-ethynyl-2-methyl-pentenyl 2,2,3
3-tetramethylcyclopropanecarboxylate 1-ethynyl-2-methyl-2-pentenyl 2,2-
Dimethyl-3- (2 ', 2'-dichlorovinyl) -cyclopropane-1-carboxylate 1-ethynyl-2-methyl-2-pentenyl 2,2-
Dimethyl-3- (2'-1'-propenyl) -cyclopropane-1-carboxylate; N-hexyl-3,4-dichloromaleimide;

Typical examples of the acaricide that can be blended include the following substances. Phenetrine, permethrin, restmeline, IBTA, IBT
E, quaternary ammonium salt, benzyl benzoate, phenyl benzoate, benzyl salicylate, phenyl salicylate, 3-bromo-2,3-diiodo-2-propenyl-
Ethyl carbonate, 4-chlorophenyl-3-iodopropargyl formal and the like. Examples of disinfectants that can be blended include para-chloro-metaxylenol (PCM).
X), 2,4,4'-trichloro-2'-hydroxydiphenyl ether (Irgasan DP-300), 3-
And iodo-2-propynylbutyl carbamate (Troysan). In addition, as a fragrance which can be blended, natural flavors such as jasper, bergamot oil, cinnamon oil, citronella oil, lemon oil, lemongrass oil, pinene, limonene, linalool, menthol, borneol, eugenol, citral, citronellal, heliotopin And artificial flavors such as crocodile and the like.
Lauryl methacrylate,
Geranyl crotonate, acetophenone myristylate,
Paramethylacetophenone benzoaldehyde and the like.

[0018]

The present invention will be described below in detail with reference to examples. However, the present invention is not limited to only these examples. Examples 1-3, Comparative Examples 1 and 2 (collectively, "Test 1")
The full-amount aerosol device 15 (also referred to as “sample 15”) of the present invention is erected as shown in FIG. 2A at the center of the floor of an 8-tatami room having a ceiling height of 2.5 m. Put. Also,
In order to analyze the arrival distribution of the aerosol composition sprayed from the full-injection aerosol device 15 by analyzing the active ingredient in the composition, a petri dish 14 (9 cm in diameter) for collecting the aerosol composition is shown in FIG. And (b). That is, the petri dish 14 has four floors at four corners of the room (2.4 m from the center) and a diagonal middle point connecting the center and the four corners of the room (1.2 m from the center). Place in four places. Further, the petri dishes 14 are placed at four corners of the room, each having a height of 1 m and a height of 2 m. Unless otherwise stated, the sprayed aerosol composition is composed of dimethyl ether (75 ml), kerosene (25 ml) and permethrin (2 g).

In Examples 1 to 3 shown in Table 2 below, the injection time and injection time required for injection when 100 ml of the aerosol composition was injected in total by the full injection aerosol device 15 having the pore diameters of the respective parts shown in the table. The injection height corresponding to the time was confirmed and displayed. Further, in Comparative Examples 1 and 2 in Table 2, the sample 15 was a conventional aerosol device having a pore diameter of each part shown in Table 2, and 100 ml of the aerosol composition having the same composition as used in Examples 1 to 3. When the total amount of was injected, the injection time required for the injection and the injection height corresponding to the injection time were confirmed and displayed. Confirmation of the injection reaching height was performed visually. As a result, it was found that in order to obtain a height of 2 m or more, the injection time should be within 1.0 minute. In all tests, including the following, the number of ventilations in the test room was 1.5 times / hour.

[0020]

[Table 2]

Examples 4 to 8 and Comparative Example 3 (also referred to as I of Test 2) The arrangement of the specimen 15 and the petri dish 14 was the same as that of Test 1 (Example 1).
3, the same arrangement as in Comparative Examples 1 and 2), and the hole diameter and the hole area ratio of each part of the specimen 15 are shown in Examples 4 to 4 in Table 3 below.
8 or Comparative Example 3
Was sprayed in a total amount of 100 ml of the aerosol composition at the time described in the column of injection time in Table 3. In Test 2 I (Examples 4 to 8 and Comparative Example 3), the arrival distribution of the aerosol composition sprayed from the sample 15 was evaluated as a floor variation rate and a height variation rate. ,
Two hours after the injection, the petri dish 14 was collected, the petri dish 14 was washed with a specified amount of acetone, the acetone used for washing was subjected to gas chromatography, and the evaluation was performed by quantifying the active ingredient (permethrin) by an internal standard method.

Here, the measured requirements are as follows. Floor variation: 1.2m and 2.4m from the center of the floor
The standard deviation of the attached amount of the active ingredient attached to the petri dish 14 arranged at each of the four locations shown in FIG. 2A on the floor surface at the distance of is divided by the average value of the attached quantity of the active ingredient at each of the four locations. The obtained values were totaled, and the total amount was expressed in terms of the uniformity of the attained distribution according to the following evaluation criteria. (Evaluation criteria): Excellent ~ 0.35; Good ~ 0.45; Acceptable ~ 0.55; Not acceptable 0.56 ~ Height variation rate: Each of the floor heights of 1 m and 2 m shown in Fig. 2B. The values obtained by dividing the standard deviation of the amount of the active ingredient attached to the petri dishes 14 arranged at four locations by the average of the amount of the active ingredient attached to each of the four locations are totaled, and the total value is reached according to the following evaluation criteria. Expressed the uniformity of the distribution. (Evaluation criteria): Excellent -0.50; Good -1.0; Acceptable -1.5; Not acceptable
1.6 to The injection time and the injection height were also measured. The results are shown in Table 3.

[0023]

[Table 3]

Comparative Example 4 (also referred to as II of Test 2) The arrangement of the specimen 15 and the petri dish 14 was the same as that of Test 1 (Example 1).
3, the same arrangement as in the case of Comparative Examples 1 and 2), and the hole diameter and the hole area ratio of each part of the sample 15 were set as described in the column of Comparative Example 4 in Table 4 below. A total amount of 100 ml of the aerosol composition was injected at the time described in the column of injection time. The arrival distribution of the aerosol composition sprayed from the specimen 15 was evaluated as a floor variation ratio and a height variation ratio in the same manner as in the test 2 of the test 2. Table 4 shows the results of the evaluation.

[0025]

[Table 4]

From Tables 3 and 4, it can be seen that the hole area of the under tap should be 3 in order to uniformly diffuse both the floor surface and the height direction.
５5 mm ² , the under tap / stem hole area ratio is 7
-12, the hole / stem ratio of the stem / nozzle may be 0.2-2, and uniform diffusion can be achieved. Further, by making the hole area of the vapor tap 0.05 to 0.15 mm ² , the vapor can be evenly diffused.

Examples 5, 7, and 8 and Comparative Example 4 (collectively referred to as Test 3) Among the evaluation results of Test 2 I and Test 2 II, the results of Examples 5, 7, 8 and Comparative Example 4 The average value of the amount of the active ingredient (permethrin) adhering to the petri dish 14 at a distance of 1.2 m from the specimen 15 on the floor, adhering to the petri dish 14 at a distance of 2.4 m from the specimen 15 on the floor The average value of the amount of the adhered active ingredient, and the adherence of the active ingredient adhered to the petri dish 14 placed at a distance of 2.4 m directly above the specimen 15 (center of the surface 1 m above the floor) on a surface 1 m above the floor The average value of the amount, the average value of the amount of the active ingredient adhered to the petri dish 14 placed on a surface 2 m above the floor at a distance of 2.4 m from the center of the surface The average value of the amount of the effective ingredient adhered to each The measurement result of the fifth
It is shown in the table. The unit of the attached amount of the active ingredient is mg / m
²

[0028]

[Table 5]

Result: In Examples 5, 7, and 8, compared to Comparative Example 4, not only the variation in the average value of the adhesion amount at the four points from the measurement portion to the measurement portion but also the absolute amount of the adhesion amount was large. It can be seen that the use of the full-injection aerosol device of the present invention allows the aerosol composition to be evenly dispersed in a closed space.

[0030]

According to the present invention, the aerosol composition can be uniformly dispersed in a closed space by using the full-aerosol aerosol device of the present invention. In particular, according to the full injection aerosol device of the present invention,
Since the aerosol composition is sprayed high in the closed space, it can be evenly spread far. For this reason, it works effectively not only on the floor surface in the enclosed space, but also on pests in the upper part of the space. For example, the full-injection aerosol device of the present invention is placed at the center of the floor of an 8-tatami room with a height of 2.5 m as shown in FIG. The amount of the aerosol composition adhered to the petri dish in the measuring section shown in FIGS. 2A and 2B was small, and the dispersion was small. 2m
It can be seen that the variation in the amount of adhesion in that plane is small even on a plane having a height of. Furthermore, since the absolute amount of the attached amount of the active ingredient is large, it can be said that the efficacy of the drug is also certain.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view showing an example of a valve section of a full-injection aerosol device of the present invention.

FIGS. 2A and 2B are explanatory diagrams of a facility for functional testing of a full-injection aerosol device of the present invention, wherein FIG. 2A is a floor arrangement diagram of a sample and a petri dish, and FIG. .

[Explanation of symbols]

 Reference Signs List 1 stem 2 stem rubber 3 housing 4 stem hole 5 stem center gap 6 gap 7 nozzle 8 spring 9 dip tube 10 under tap hole 11 vapor tap hole 12 push button 13 gasket rubber 14 petri dish 15 full quantity aerosol device (sample) 16 valve section

Claims (4)

[Claims] 1. A propellant / stock solution ratio (volume) of 70/3
0 to 90/10 and floor area of 10 to 16.5 m ²
A full-injection aerosol device, wherein the injection time per hit is within one minute. 2. The total volume according to claim 1, wherein the under-tap / stem hole area ratio of the valve of the aerosol device is 7 to 12, and the under-tap hole area is 3 to 5 mm ^2. Injection aerosol device. 3. The full-aerosol aerosol device according to claim 1, wherein the stem / nozzle hole area ratio is 0.2 to 2. 4. The full-injection aerosol device according to claim 1, further comprising a vapor tap hole.