JPH07196402A - Insecticide, fungicide solvent and insecticide, fungicide - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an insecticidal and bactericidal solvent and an insecticidal and bactericidal agent which has no organic solvent odor and which does not substantially damage the resin-based buried pipes and heat insulating materials. [Structure] The following general formula (I): (In the formula, R ₁ is a methyl group, an ethyl group, a propyl group or a butyl group, R ₂ is a propyl group or a butyl group, and m is 1 to
3, n is 1 to 3, and the position of the substituent is not limited), and at least one alkylnaphthalene compound represented by the following general formula (II) (In the formula, R ₃ is a methyl or ethyl group, x is 1 to 3, and y is
Is 1 to 3, and the position of the substituent is not limited) Insecticide containing at least one alkylnaphthalene compound represented by the formula, a fungicide solvent, and an insecticide in the solvent, a fungicide, in particular, organic An insecticidal and bactericidal agent in which a phosphorus-based drug is dissolved, emulsified or dispersed.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a solvent for insecticides and fungicides,
In particular, the invention relates to a solvent for organic phosphorus insecticides and germicides, and insecticides and germicides using the solvent.

[0002]

2. Description of the Related Art Generally, solutions, dispersions, emulsion type insecticides, fungicides, particularly organophosphorus insecticides, fungicides, etc., in which the insecticide or fungicide is dissolved in an organic solvent such as kerosene or alkylbenzene, or It is used by adding a surfactant or the like thereto, emulsifying and diluting with water and then spraying. Such insecticides and bactericides have a strong odor of organic solvents such as kerosene and alkylbenzene, which causes discomfort during spraying.
Furthermore, because of this type of solvent, when sprayed around the house or under the floor, there are drawbacks such as serious damage to the buried pipe made of hard vinyl chloride etc. used for water supply etc. and the heat insulating material made of expanded polystyrene etc. there were.

[0003]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems, and an object of the present invention is to eliminate the smell of organic solvent,
Moreover, it is an object of the present invention to provide a pesticidal and bactericidal solvent and a pesticidal and bactericidal agent that hardly damages resin-based buried pipes and heat insulating materials.

[0004]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that a compound obtained by propylating or butylating an alkylnaphthalene dissolves an organophosphorus insecticidal or bactericidal agent. However, it has been found that there is almost no odor and that it does not damage the rigid vinyl chloride piping or expanded polystyrene.

The present invention was made on the basis of such findings, and the present invention is based on the following general formula (I):

[Chemical 3] (In the formula, R ₁ is a methyl group, an ethyl group, a propyl group or a butyl group, R ₂ is a propyl group or a butyl group, and m is 1 to
3, n is 1 to 3, and the position of the substituent is not limited), and at least one alkylnaphthalene compound represented by the formula (II)

[Chemical 4] (In the formula, R ₃ is a methyl or ethyl group, x is 1 to 3, and y is
Is 1 to 3, and the position of the substituent is not limited) Insecticide containing at least one alkylnaphthalene compound represented by the formula, a fungicide solvent, and an insecticide in the solvent, a fungicide, in particular, organic It consists of insecticides and bactericides in which phosphorus-based drugs are dissolved, emulsified or dispersed.

To the alkylnaphthalene compound of the above formula (I), that is, a compound obtained by adding 1 to 3 methyl groups, ethyl groups, propyl groups or butyl groups to a naphthalene ring, 1 to 3 isopropyl groups or One of the butyl groups is added. These compounds include
Methylisopropylnaphthalene, dimethylisopropylnaphthalene, trimethylisopropylnaphthalene, methyldiisopropylnaphthalene, dimethyldiisopropylnaphthalene, trimethyldiisopropylnaphthalene, methyltriisopropylnaphthalene, dimethyltriisopropylnaphthalene, trimethyltriisopropylnaphthalene, ethylisopropylnaphthalene, diethylisopropylnaphthalene, triethylisopropylnaphthalene , Ethyldiisopropylnaphthalene, diethyldiisopropylnaphthalene, triethyldiisopropylnaphthalene, ethyltriisopropylnaphthalene, diethyltriisopropylnaphthalene, triethyltriisopropylnaphthalene, methylethylisopropylnaphthalene,
Examples thereof include dimethylethylisopropylnaphthalene, methyldiethylisopropylnaphthalene, methylethyldiisopropylnaphthalene, dimethylethyldiisopropylnaphthalene, methyldiethyldiisopropylnaphthalene, methylethyltriisopropylnaphthalene, dimethylethyltriisopropylnaphthalene, and methyldiethyltriisopropylnaphthalene.

In the above compound, a methyl group, an ethyl group, an isopropyl group and a butyl group may be added at any position on the naphthalene ring, and these alkylnaphthalene compounds may be used alone or in combination of two kinds. The above may be in a mixed state.

The present invention uses the above-mentioned alkylnaphthalene compound as a solvent for insecticides and bactericides. In addition to this compound, other organic compounds such as benzene, naphthalene, indane, indene or Even if a compound in which an alkyl group or the like is added to these rings is mixed, there is no particular problem. However, for the remarkable effect of the present invention, the above-mentioned alkylnaphthalene compound is contained in the solvent in an amount of 50% by weight or more, preferably 70% by weight or more,
In particular, 90% by weight is preferable.

The alkylnaphthalene compound according to the present invention is obtained by separating methyl naphthalene, dimethylnaphthalene or ethylnaphthalene contained in a catalytically reformed product oil from a fraction such as coal tar oil, naphtha or kerosene by a distillation operation or the like, It can be easily obtained by collecting and propylating these.

The above-mentioned insecticidal and bactericidal solvent includes insecticidal and bactericidal agents, especially organophosphorus-based insecticidal and bactericidal agents such as CYA.
P (cyanophos) agent (Cyanox, Gibosim), M
PP (fenthion) agent, MEP (fenitrothion)
Agent, ECP (diclofenthion) agent, pirimiphos-methyl agent, diazinon agent, etrimphos agent, isoxathion agent, pyridafenthion agent, chlorpyrifos-methyl agent, chlorpyrifos agent (dazban), ESP agent (estox), bandthione agent, marathon agent, PAP (fentoate) agent , Dimethoate, formothione,
Mecarbam agent, thiomethone agent, ethylthiomethone agent, fosalone agent, PMP (phosmet) agent, DMTP (methidathion) agent, prothiophos agent, DDVP agent, monocrotophos agent, BRP agent, CVMP agent, dimethylvinphos agent,
Suitable as a solvent for CVP (chlorphenvinphos) agents, propaphos agents, acephate agents, salicion agents, DEP agents, EPN agents, tetrachlorvinphos agents, fenitrothion agents, propetanephos agents, phoxime agents, IBP agents, EDDP agents, etc. However, among these, it is particularly suitable as a chlorpyrifos agent which is a medicinal component of an ant exterminating agent for controlling ants.

The insecticidal and bactericidal agent according to another invention of the present application is
One or several kinds of the above insecticidal and bactericidal agents are dissolved and dispersed in the above insecticidal and bactericidal solvent of the present invention in an amount of 0.5 to 90% by weight.
Alternatively, it is an emulsified product or a product obtained by diluting this with water or another solvent 1 to 10000 times. In this case, in addition to insecticides and bactericides, anions, carions, nonions, and also emulsifiers such as amphoteric surfactants, other potentiating agents, insecticides such as synergists, additives usually used for bactericides, or antiseptics Agents and the like may be added.

[0012]

EXAMPLES Preparation of Solvent A raw material fraction having the composition shown in the center column of Table 1 was propylated, and a fraction in the boiling range of 290 to 310 ° C. was recovered by distillation. The composition shown in the right column of Table 1 was obtained. A propylated oil having

[0013]

[Table 1]

This propylated oil has a naphthalene odor,
No other organic solvent odor was observed, and it had the general properties shown in Table 2.

[0015]

[Table 2]

Dissolution test 50 ml of the propylated oil prepared above was placed in a 200 ml beaker, and while stirring with a magnetic stirrer, chlorpyrifos was added until an insoluble matter appeared, and after standing for 24 hours, the weight of the insoluble matter was measured. Was measured and subtracted from the added amount to obtain the dissolved amount. For reference, xylene and Cactus Solvent P-150 (hereinafter abbreviated as "P-150", which has been conventionally used as a solvent for insecticides and fungicides, manufactured by Nikko Petrochemical Co., Ltd .; distilled from naphtha modified oil) Similar tests were conducted for the separated fractions containing alkylbenzene having 8 to 9 carbon atoms as the main component) and white kerosene. In addition, these xylene, P-150, and white kerosene have strong organic solvent odor. The results are shown in Table 3.

[0017]

[Table 3]

From these results, it is understood that the propylated oil which is the alkylnaphthalene compound of the present invention has almost no difference in the dissolving power as compared with the conventional solvent and the like.

Effect test on buried pipes Emulsion type termiticide consisting of 52 parts by weight of the above-mentioned propylated oil, 40 parts by weight of chlorpyrifos, and 8 parts by weight of polyoxyethylene nonylphenyl ether (7.5 moles of EO addition) as an emulsifier. Prepare an undiluted solution, and add to this 150 ml rigid vinyl chloride piping (JIS K 6742 standard product: inner diameter 25 mm, outer diameter 32 mm,
(Thickness: 3.5 mm, length: 50 mm) at a temperature of 30 ° C
Soak for hours. After washing with water, it was dried at room temperature for a whole day and night, and the weight change rate of the hard vinyl chloride pipe before and after immersion was measured. For comparison, instead of propylated oil, xylene,
Using P-150 and white kerosene, a similar ant-preventive stock solution was prepared and the same test was conducted. The results are shown in Table 4.

[0020]

[Table 4]

From these results, xylene and P-150
Swells the hard vinyl chloride pipe, but it can be seen that the propylated oil has little effect.

Impact test on heat insulation agent In 150 ml of the same stock solution of termite control agent as described above, expanded polystyrene (JIS A 9511 B 3
Specified product: 50 mm × 50 mm × 30 mm) was immersed at a temperature of 25.5 ° C. for 5 minutes. After washing with water, it was dried overnight at room temperature and then at 40 ° C. for 6 hours, and the dimensional change rate of polystyrene before and after immersion was measured. For comparison, xylene, P-150 and white kerosene were also tested as above. The results are shown in Table 5.

[0023]

[Table 5]

From the dimensional change rate, it can be seen that xylene and P-150 dissolve the expanded polystyrene remarkably and the kerosene slightly, but the propylated oil has almost no effect.

From the above results, it can be seen that the alkylnaphthalene compound of the present invention is excellent as a solvent for insecticides and bactericides.

[0026]

INDUSTRIAL APPLICABILITY The insecticidal and bactericidal solvent and the insecticidal and bactericidal agent of the present invention have a particular effect that there is no odor of an organic solvent and that the resin-based buried pipe and the heat insulating material are hardly damaged.

Claims (4)

[Claims] 1. The following general formula (I): (In the formula, R ₁ is a methyl group, an ethyl group, a propyl group or a butyl group, R ₂ is a propyl group or a butyl group, and m is 1 to
3, n is 1 to 3 and the position of the substituent does not matter), and is a solvent for insecticides and bactericides containing at least one alkylnaphthalene compound as a main component. 2. The compound of general formula (I) according to claim 1 is represented by the following general formula (II): (In the formula, R ₃ is a methyl or ethyl group, x is 1 to 3, and y is
Is 1 to 3 and the position of the substituent is not limited), and it is at least one kind of alkylnaphthalene compound. 3. An insecticidal or bactericidal agent, which comprises dissolving, emulsifying or dispersing an insecticidal or bactericidal agent in the insecticidal or bactericidal solvent according to claim 1. 4. An insecticidal or bactericidal agent, wherein the insecticidal or bactericidal agent according to claim 3 is an organophosphorus agent.