JPS5984801A - Aerosol for expelling injurious insect in space - Google Patents

Abstract

PURPOSE:The titled aerosol, prepared by filling an aerosol can having a housing hole diameter within a specific range, etc. of an injection valve with a kerosine solution containing an injurious insect expellent and a propellant consisting of liquefied dimethyl ether or further liquefied petroleum gas. CONSTITUTION:An aerosol prepared by filling an aerosol can having 0.4-1.5mm. housing hole diameter of an injection valve, 0.25-0.4mm. vapor tap, stem and button hole diameters with a formulated concentrate of an aerosol containing (A) 40-50vol% kerosene solution containing an injurious insect expellent and (B) 50-60vol% propellant containing 0-30vol% liquefied petroleum gas having 2.8-3.5kg/cm<2> pressure at 20 deg.C and 20-60vol% liquefied dimethyl ether. In order to reduce the danger of explosion and inflammation, 20vol% or more dimethyl ether and 30vol% or less liquefied petroleum gas are preferably contained in the total amount of the formulated compsn. of the aerosol.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an aerosol agent for controlling pests in a space, and more particularly, the present invention relates to an aerosol agent for controlling pests in a space, and more particularly, a C pest control agent or a T rosin solution containing the C pest control agent and a synergist thereof is 40 to 5% by volume of a propellant. Toshide 20
'The pressure in Clζ is 9/cdcn from 2.8 to 8.5
Liquefied petroleum gas is O~SO volume j1%, liquefied dimethyl ether? The undiluted solution is injected with air I + l consisting of 20-b%.The hole diameter of the valve housing is 0.4-1.53ff, the hole diameter of the paper tap, the hole diameter of the stem, and the hole diameter of the button.
ett 0.25"0.41'll O) FJ-rIi can+i!: Fully explosive, no flammable danger, good sprayability, and pest control effect) Excellent and excellent Regarding this topic, the conventional propellants for aerosol insecticides for spaces include '70s, dimethyl ether, and other propellants.
Gases or mixtures thereof could be used. Although fluorocarbon gas is not explosive or flammable and has good jetting properties, it poses a risk of air pollution and destruction of the ozone layer, so its use is regulated or prohibited. Furthermore, since dimethyl ether and liquefied petroleum gas are both flammable gases, when using such propellants, it is necessary to reduce the risk of explosion and flammability.
There are various restrictions such as the use of specific liquefied petroleum gas with relatively low pressure (as described in Japanese Patent No. 7-16081).

Under these circumstances, the inventors of the present invention have conducted extensive studies regarding space pest control aerosol agents, and as a result, we have found that the housing hole diameter is 0.
4~l, 5u, the hole diameter of the paper tap, the hole diameter of the stem, and the hole diameter of the button are 0.25-0.4, respectively.
Therefore, even if only dimethylene ether is used as a propellant, Matco is able to prevent high-pressure gas with regard to explosiveness and flammability, even if it is used in conjunction with relatively high-pressure liquefied petroleum gas. We have discovered that it is possible to prepare a spatial aerosol agent that satisfies the regulations of Type H based on the Act and also has an excellent pest control effect, and has completed the present invention.

In the aerosol formulation of the present invention, active ingredients include insecticides such as pyrethroid insecticides and organophosphorus insecticides; A pest control agent such as a kerosene agent or juvenile hormone can be used, and if necessary, it is dissolved in kerosene together with a synergist such as biperonyl butoxide to form a kerosene solution.

In addition, the propellant C is dimethyl ether alone or together with it at 20°C (at a pressure of 2.8 to 8.5 kti/d).
A mixture of liquefied petroleum gas and liquefied petroleum gas can be used. These compounding ratios S)r is 40% by volume of kerosene solution.
If the amount of the propellant exceeds 60% by volume, the danger of explosion and flammability increases, and the above-mentioned regulations of the High Pressure Gas Control Act cannot be satisfied. If the kerosene solution exceeds 50% by volume, there is an increased risk of flammability (i.e., ejectability), and the amount of ejected particles becomes too large, making it impossible to exert a sufficient pest control effect. Therefore, kerosene solution: Propellant = 40-50% by volume: 50-6
0% by volume.

2. When C dimethyl ether and liquefied petroleum gas are used together as propellants, the mixing ratio of these will vary depending on the pore diameter of the housing of the injection valve of the aerosol can, the pore diameter of the paper tap, the pore diameter of the stem, and the pore diameter of the button. However, in order to reduce the risk of explosiveness and flammability,
Dimethyl ether accounts for 20% of the total amount constituting the aerosol.
% by volume or more, and the liquefied petroleum gas is 30% by volume or more F.

The kerosene solution and propellant are injected in the mixing ratio as described above.The housing of the valve has a hole diameter of 0.4 to 1.5 m.
The hole diameter of the paper tap, the hole diameter of the stem, and the hole diameter of the button are each 1. o, Filled in an aerosol can of 25 to 0.411III; it satisfies the regulations of class H based on the High Pressure Gas Control Act regarding explosive and flammable substances, has good jetting properties, and contains C1 active ingredients. The spatial pest control aerosol agent of the present invention can be obtained which can sufficiently exhibit pest control efficiency.

Next) Examples related to the spatial pest control aerosol agent S of the present invention will be shown, but the present invention is not limited thereto.

Example 1 Active ingredient, phthalthrin 0.3% (W/V) and d
- Phenothrin [(+> cis, trans acid form of phenothrin, same as F)] 0.2% (W7V Pour 50% by volume of + kerosene solution into an aerosol can;
Liquefied petroleum gas 2 with a pressure of 8.0 kg/-
2.5% by volume and liquefied dimethyl ether 27.5% by volume96
A pest control aerosol agent for the space of an injection valve having the housing diameter, beno F-tap pore diameter, stem pore diameter and button pore diameter shown in Table 1 was obtained.

Next, we will present the results of testing the explosiveness, flammability, jetting properties, and commercial extermination effect of this spatial pest control aerosol agent.
The table is posted. Explosiveness is determined by the explosive concentration determined by the explosive test method, flammability is determined by the flame length determined by the flammability test method, sprayability is determined by the result of naked eye observation, and pest control effectiveness is determined by Beat Grady.
No. 1 technique using a chamber, the power pest extermination effect is ○, △
, ×, respectively. Good ones are tr○", usable ones are "△", and unusable ones are "×".
”.

Example 2 Active ingredient: °C Phthalthrin 0.8% (W7V r and d
- The pressure at which the stock solution of phenothrin 0.2% (W/Vl kerosene) is heated to 20'C is 2.4 to 4.0 k.
(j / d liquefied petroleum gas and liquefied dimethyl ether were mixed at various ratios shown in Table 2 S and filled into an aerosol can, the pore diameter of the housing was 0.8 tm, the pore diameter of the paper tap, and the diameter of the stem). I obtained a pest control aerosol agent for the h space of the injection valve with hole diameter and button hole diameter of Q and 3 MM, respectively.

Next, the same test as in Example 1 was conducted and the results are shown in Table 2.

3- Example 8 Active ingredients include d-allethrin ((10) cis, trans acid form of 71/suIJ) o, 4% (WAi>) and d-resmethrin [(+) cis, trans acid form of resmethrin ,
0.2% (W/Vl and synergist as biperoni) levbutoxide 1.5% (W/V) kerosene solution (40% by volume) in an aerosol can) and 20 'CI here. Is the C pressure 2.8 k? / d liquefied upper gas 2o volume % and liquefied dimethyl ether 4
A pest control aerosol agent for the space of an injection valve was obtained by filling the space with a pore size of 1.5 tuna, a pore diameter of a paper cup, a pore diameter of a stem, and a pore diameter of a button of Q and 3 ytw.

Next, the same test as in Example 1 was conducted, and the product was found to be usable in terms of explosiveness, flammability, jetting properties, and pest extermination effect.

Example 4 A 45% kerosene solution containing 0.6% (W/V) C-phthalin and 0.2% (W/V) d-phenothrin as active ingredients was added to an aerosol can) and heated at 20°C. 20% by volume of liquefied petroleum gas with a pressure of 8.2 kg/cd
and 85% liquefied dimethyl ether, housing pore diameter 1.0 mm, stem pore diameter 0.85 m.
/< - Obtain an aerosol agent for pest control in a space with an injection valve in which the hole diameter of the knob and the hole diameter of the button are each 0.8 bar.

Next, the same tests as in Example 1 were conducted, and the result was that the product could be used in terms of explosiveness, flammability, sprayability, and pest control effect.

Example 5 Phthalthrin 0.6% (W/V) and d as effective ts
- Resmethrin 0.1% (W/Vl and as synergist Cocucchlorodibrobyl ether 2% (W/V) kerosene solution in 50 volume t% in an aerosol can) and then 50% of liquefied dimethyl ether. The housing is filled with 96 holes and the hole diameter of the housing is 1. The hole diameter of the paper tap is 0.85MM.

A spatial pest control aerosol agent having an injection valve with a stem pore diameter and a button pore diameter of 0.3 mm was obtained.

Next) The same tests as in Example 1 were conducted, and the product was found to be usable in terms of explosiveness, flammability, jetting properties, and pest extermination effect.

Example 6 A kerosene solution containing 45% by volume of Cphthalthrin 0.2% (W/white) and fenitrothion 0.5% (W/V) as active ingredients was poured into an aerosol can; the pressure at which it was heated was a, 2 kq/ctj liquefied petroleum gas 2
b Filled with volume% and dimethyl ether 80% by volume, housing diameter is 0.8 wings, paper tap diameter is Q,
A spatial pest control aerosol agent having an injection valve having a diameter of 411M, a stem diameter, and a button diameter of 0.88 was obtained.

Next, the same tests as in Example 1 were carried out, and all aspects of explosiveness, flammability, sprayability, and pest control effect were measurable.

Procedural amendment 1 (voluntary) February 7, 1980 1, Indication of the case 1988 Patent Application No. 196625 2, Name space of the invention pest control aerosol 3, Person making the amendment Relationship with the case Patent applicant Address 5-15 Kitahama, Higashi-ku, Osaka Name (
209) Sumitomo Chemical Co., Ltd. Representative Hijikata
Takeshi 4, agent

Claims (1)

[Claims] The active ingredient is a pest control agent or a gamma rosin solution of this and a military agent at 40-50% by volume, and the propellant is 20"C1.
Liquefied petroleum gas with a pressure of 2.8 to 3.5 kq/i is θ-30% by volume, and liquefied dimethyl ether is 20 to 30% by volume.
Inject air consisting of 60% by volume / -1 and inject the valve housing hole diameter force 0.4-1.5 + rM, the hole diameter of the paper tab, the hole diameter of the stem, and the hole diameter of the button are 0.25 to Q, respectively. , 411M aerosol can filled with 1ζ space pest control aerosol agent.