JPH0343486A - Vermin-controlling aerosol composition - Google Patents

Abstract

PURPOSE:To obtain the subject composition having high safety to fire hazard and excellent sprayability and exhibiting extermination effect against mites, etc., when injected into a mat, bedding, cuddly toy, etc., by using a mixture of fluorocarbons, dimethyl ether and LPG as a propellant component. CONSTITUTION:The objective composition is produced by mixing (A) 40-80vol.% of an active stock liquid containing active component and optionally a synergist and (B) 60-20vol.% of a propellant mixture composed of (i) 20-70vol.% of fluorocarbons, (ii) 0-50vol.% of dimethyl ether and (iii) 0-80vol.% of LPG. Examples of the fluorocarbon of the component B are monoehlorodifluoromethane, monochlorodifluoroethane, difinoroethane, 2,2- dichloro-1,1,1-trifluoroethane, 1,1,1,2-tetrafluoroethane, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to an aerosol composition for controlling bookworms. Kirani Details 1 No. 1 mainly relates to a stationary aerosol All acid for controlling insect pests such as mites by injecting or surface treating tatami plants, orchid groups, pine tresses, stuffed animals, etc.

<Problems to be solved by the present invention> The above-mentioned conventional product has no mention of whether it should be used by injecting it into Toyonaka. When injecting air sea A composition for preventing calligraphy into tatami mats, only the propellant in the composition comes out from inside the fireflies to the surface, so there is a risk of fire if there is an ignition source. There is. Conventionally, as a measure against the above, the non-flammable gas Freon was optionally added. However, there is a problem that fluorocarbons destroy ozone, which is present in many products, and a law has been enacted from this year to reduce the use of fluorocarbons. M, the fluorocarbons to be controlled are fluorocarbons 11, 12,
113,114. 581, and conventional ones used these fluorocarbons as propellants.

The purpose of the present invention is to obtain an aerosol composition for pest control that is highly fire safe and does not use fluorocarbons as a propellant, which are subject to the above-mentioned conventional laws and regulations.

Means for Solving the Problems> The present invention provides an active ingredient stock solution containing an active ingredient or a synergist thereof at a concentration of 40 to 80 V6 t% and a propellant of 60 V6 t%.
~20Vo In an aerosol composition for pest control which is blended at a ratio of 1%, each propellant component contains Freon 20~
7 QVo 1%D M E 0~50 Vo
The present invention relates to an aerosol composition for pest control characterized by a blending ratio of 1% LPG and 0 to 80 Vol%.

In the present invention, the solvent used for the active ingredient stock solution may include petroleum, alcohols, ketones, halogenated hydrocarbons, esters, ethers, etc., depending on the solubility of the active ingredient and the speed after injection. It is determined as appropriate from the viewpoints of dryness, toxicity, etc.

As pest control ingredients, pyrethroid compounds, organic phosphorus compounds, carbamate compounds, insect growth inhibitors, and other compounds having pest control properties can be used alone or in combination, and typically the following compounds are used. I can list them.

0 pyrethrin, allethrin, phthalthrin, resmethrin, permethrin, phenothrin.

Framethrin, Cypermethrin, Cyphenotrin.

Pyrethroid compounds such as fenvalerate.

O-fenitrothion, diazinon, chlorpyrifos,
Organophosphorus compounds such as dichlorvos and pyridafenthione.

O propoxar methoxacycin, NAC.

Carbamate compounds such as BPMC.

0 Insect growth inhibitors such as hydroprene and methoprene.

As a synergist, piperonyl butoxide, S-421
, IBTA, Cinepirin 222. Cynevirin 500
．． Examples include MGKll. Other ingredients include phenyl salicylate, penzyldite benzoate,
Diethyl phthalate and the like can also be mixed.

In addition to the above, it is also possible to mix six components,
For example, fragrances, deodorants, disinfectants, etc. can also be mixed.

In the present invention, the above-mentioned active ingredient stock solution contains 40% of the total composition.
~80 Vol % is preferred, 40V.

If it is less than 1%, the adhesion of the sprayed particles during surface treatment spraying will be poor (and if it exceeds 80 vol %, the sprayed particles will become large and the coating surface will become wet, which is not suitable).

In the present invention, the propellants include monochlorodifluoromethane (Freon 22), monochlorodifluoroethane,
Difluoroethane, 2,2-dicgas, dimethyl ether (DME), liquefied petroleum gas (LPG), etc. can be used.

The mixing ratio of the above CFC in the total propellant is 20
~70 Vol % is preferred *20 V.

If the amount is 1% unfunded, the risk of fire during use cannot be reduced, and if it exceeds 70 Vol %, the vapor pressure of Freon 22 is high, so the product pressure is high (which is not suitable for practical use).

The blending ratio of the above DME and LPG varies depending on the blending amount of the above Freon 22, but the product pressure is 3.5 to 4.
It is adjusted to be 5#/d (25'c). In that case, the upper limit of explosion for DME and LPG is 18.0 for the former.
%, the latter is 6.9%, and at the lower limit the former is 3.5%, the latter 1
．． Since it is 7%, it is desirable to increase the blending ratio of DME.

As the above LPG, mainly n-butane, 1sa-butane and/or propane can be used in any proportion, and when combined with CFCs and DME, the product pressure is 3.5~
Adjusted to 4.5 kg/d (25°C).

The blending ratios of DME and LPG in the total propellant are 0'-50 Vol+% and 0-80 Vol+%, respectively.
% is preferred, 5QVol-% and 5oVol-%, respectively.
・Exceeding % not only increases the risk of fire, but also increases product pressure, making it unsuitable for practical use.

Effects> The present invention can achieve high safety against fire and good sprayability by using fluorocarbons that are not subject to legal regulations as fluorocarbons.

<Examples> The present invention will be explained in detail below using Examples and Test Examples.

Examples 1 to 7 An aerosol can with an internal capacity of 390 mm was filled with an active ingredient stock solution and CFC 22, DME, and LPG as propellants at the mixing ratios shown in Table 1 below, and the aerosol cans were sealed with a valve. obtained the drug. This was attached with a button and connected to the main body, and was used for each test. In addition, Comparative Examples 8 to 13 were prepared in the same manner as above and subjected to each test. The obtained results are shown below! l! Also listed.

Table 1 The tests listed in Table 1 above were evaluated based on the following method criteria.

(Ignition test) As shown in FIG. 1, the pest control aerosol composition was injected into the tatami at 12 equal locations per 1 tatami mat for 10 seconds per location. Immediately after injection, bring the flame close to the last injection port. Then, the state of ignition was observed and the 0 judgment was made as ○ or × according to the following criteria.

○: Only one place (2) ignited. ×: After ignition only one place (2), the flame extended in the direction of ■ or ■.

(Internal pressure) Judgment was made as ○ or × based on the following criteria.

○: Product internal pressure is 8 & 9/- or less at temperature 35'C ×: Product internal pressure exceeds 8#/d at temperature 35'C (spray condition) Judgment is 0. I did it with x.

0: Good ×: Poor adhesion of spray particles or excessive wetting during surface application.

(Comprehensive evaluation a) Evaluation was performed as ◯, △, or × according to the following criteria.

○: Good △: Possible ×: Unsuitable Discussion It is clear from the above test results that the aerosol composition for pest control of the present invention is extremely superior in both safety and sprayability compared to the comparative composition.

(Effects) As described above, the present invention is characterized in that extremely high safety against fire and good eruption properties can be obtained.

[Brief explanation of drawings]

FIG. 1 is a plan view of a tatami mat (190×953) used for the ignition test of the aerosol composition for pest control of the present invention. In the figure, 1-%-12 is the injection point of the aerosol composition. (that's all)

Claims (1)

[Claims] 40 to 80 Vol% of an active ingredient stock solution containing the active ingredient or a synergist thereof, and 60 to 20 Vol% as a propellant.
An aerosol composition for pest control characterized in that each component of the propellant is blended in a proportion of 20 to 70 Vol% of Freon, 0 to 50 Vol% of DME, and 0 to 80 Vol% of LPG. thing.