JP2737949B2 - Pest powders with improved fast-acting properties - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a powder for insect pests, and more particularly to a powder for insect pests with improved immediate action.

2. Description of the Related Art A powder for insect pests containing an amphoteric surfactant has not hitherto been known.

DISCLOSURE OF THE INVENTION An object of the present invention is to provide a powder for insect pests with improved fast-acting properties.

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above problems, and surprisingly, by containing an amphoteric surfactant,
The present inventors have found that the rapid action of a drug is remarkably enhanced, and completed the present invention.

That is, the present invention provides an insect pest having an improved fast-acting property, comprising an insecticide component comprising at least one selected from pyrethroid-based, organophosphorus-based and carbamate-based insecticides, and an amphoteric surfactant. It is.

The insecticides used in the present invention include (1,3,4,
5,6,7-hexahydro-1,3-dioxo-2-isoindolylmethyl (+)-cis / trans-chrysanthemate (hereinafter abbreviated as d-tetramethrin), (5-benzyl-
3-furyl) methyl (+)-cis / trans chrysanthemate (hereinafter abbreviated as d-resmethrin), 3-phenoxybenzyl (±) -cis / trans-3- (2,2-dichlorovinyl) -2,2 -Dimethyl-1-cyclopropanecarboxylate (hereinafter abbreviated as permethrin), (±)-
2-methyl-4-oxo-3- (2-propynyl) -2
-Cyclopentenyl- (±) -cis / trans-chrysanthemate (hereinafter abbreviated as d, d-praletrin), 3-phenoxybenzyl-(+)-cis / trans-chrysanthemate (hereinafter abbreviated as phenothrin), 2 -(4-ethoxyphenyl) -2-methylpropyl-3-phenoxybenzyl ether (hereinafter abbreviated as ethofenprox), (±) -α-cyano-3-phenoxybenzyl-
(+)-Cis / trans-chrysatin mart (hereinafter referred to as d-
Pyrethroids and pyrethroid-like insecticides such as cyphenothrin) and O, O-dimethyl-O- (3-methyl-
4-nitrophenyl) thiophosphate (hereinafter abbreviated as fenitrothion), O, O-diethyl-O- (2,3-dihydro-3-oxo-2-phenyl-6-pyridanyl) phosphorothioate (hereinafter abbreviated as pyridafenthion) ),
Organophosphorus insecticides such as O-3,5,6-trichloro-2-pyridyl-O, O-dimethylphosphoroate (hereinafter abbreviated as chloropyrifosmethyl) and 1-naphthylmethyl carbamate (hereinafter referred to as carbaryl) Abbreviated), 2-isporboxyphenylmethylcarbamate (hereinafter abbreviated as propoxur), 5-methoxy-3- (O-methoxyphenyl)-
Carbamate insecticides such as 1,3,4-oxadiazol-2 (3H) -one (hereinafter abbreviated as methoxadiazone) are listed.

The amphoteric surfactant used in the present invention has a structural formula represented by the following formulas I to VII.

(In the formula, R ¹ represents an alkyl group having 8 to 18 carbon _{^{atoms.) R 2 - (NHCH 2}} CH 2) n N + HCH 2 COO - ...... II ( wherein, n an integer of 1 to 3 , R ² represents an alkyl group having 8 to 18 carbon atoms.) (In the formula, R ³ represents an alkyl group having 8 to 18 carbon atoms.) (Wherein, R ⁴ represents an alkyl group having 8 to 18 carbon atoms, R ⁵
Represents a benzyl group or 4 or a methyl group. ) (In the formula, R ⁶ represents an alkyl group having 8 to 18 carbon atoms.) (Wherein, R ⁷ represents an alkyl group having 8 to 18 carbon atoms, R ⁸
Represents a hydroxyl group or an acidic salt, R ⁹ represents a hydrogen atom or a carboxymethyl group or its sodium salt, and n represents an integer of 1-2. ) (Wherein, R ¹⁰ represents an alkyl group having 8 to 18 carbon atoms;
¹¹ represents a hydrogen atom or a carboxymethyl group or its sodium salt, and n represents an integer of 1-2. A typical example thereof is polyoctyl polyaminoethyl glycine [hereinafter referred to as TEGO51 (trade name: Goldschmidt)]. ], Polyalkyldi (aminoethyl)
Glycine, lauryl dimethyl ammonium betaine, stearyl dimethyl acetate betaine, myristyl acid propanilamide dimethyl acetate betaine, lauryl dimethylamine oxide, alkyl carboxymethyl hydroxyethyl imidazolinium betaine, 2-alkyl-N-hydroxyethyl imidazolinium betaine, etc. Is mentioned.

The content of the amphoteric surfactant is determined by considering the properties of the mineral powder,
It is 0.1 to 5.0% by weight, preferably 0.5 to 3.0% by weight.

In addition, N-octyl-bicycloheptenedicarboximide [hereinafter referred to as MGK264 (trade name: manufactured by Yoshitomi Pharmaceutical Co., Ltd.)]
It was called. And the like, and an additive may be used in combination with a synergist for the insecticidal component, and glycols such as ethylene glycol, and other surfactants.

Even when used in combination with a stabilizing agent, for example, a phosphoric acid ester such as isopropyl phosphate, a polyethylene glycol fatty acid ester, a sorbitan fatty acid ester, or a glycerin fatty acid ester, the effectiveness is not lost.

No special means is required for adding the amphoteric surfactant of the present invention, and it is only necessary to mix uniformly. That is, a powder can be produced by adding an insecticide, which is an insecticide component, and amphoteric surface activity to a mineral carrier together with a synergist and an auxiliary for the insecticide component, if necessary, and pulverizing, mixing, or sieving. The same may be applied to the production after the production of the premix.

Examples of the mineral carrier at this time include talc, clay, kaolin, diatomaceous earth, benite, weathered granite, and shirasu. In addition, when producing via a premix, silicic anhydride may be added as necessary to produce.

Advantageous Effects of the Invention According to the present invention, a powder for insect pests which has excellent fast-acting properties without being influenced by the type and concentration of the insecticide can be obtained.

Examples Hereinafter, examples and test examples will be described in more detail.

Example 1 96.8 parts of powdered clay, 0.2 part of phenothrin, 1.0 part of polyalkyldi (aminoethyl) glycine and 2.0 parts of isopropyl acid phosphate (hereinafter abbreviated as PAP) were sufficiently pulverized and mixed with a Yariya pulverizer (manufactured by Yarya), and powdered And

Example 2 95.0 parts of kaolin, 2.0 parts of propoxur, 1.0 part of lauryldimethylammonium betaine and 2.0 parts of PAP were sufficiently pulverized and mixed with a Yariya pulverizer to obtain a powder.

Example 3 95.0 parts of powdered clay, 2.0 parts of fenitrothion, 1.0 part of betaine stearyldimethylacetate and 2.0 parts of PAP were sufficiently pulverized and mixed with a Yariya pulverizer to obtain a powder.

Example 4 97.8 parts of talc, 0.1 part of d-tetramethrin, and MGK264
0.6 parts, lauryl dimethylamine oxide 0.5 parts and PA
P1.0 part was sufficiently pulverized and mixed with a Yariya pulverizer to obtain a powder.

Example 5 Kaolin was added to a flash mixer (Takara Koki Co., Ltd.).
83 parts, anhydrous silicic acid 5.5 parts, etofenprox 0.25 parts,
3.75 parts of pyridafenthion, 2.5 parts of TEGO51 and PAP5.0
Parts were charged to obtain a premix. This premix 40
Parts and 60 parts of kaolin were charged into a V-type mixer (manufactured by Tokuju Kosakusho), mixed uniformly, and sieved with 32 mesh to obtain a powder.

Example 6 In a flash mixer, 75.75 parts of clay, 5.5 parts of silicic anhydride, 5.0 parts of carbaryl, 3.75 parts of fenitrothion
, 5.0 parts of alkylcarboxymethylhydroxyethyl imitazolinium betaine and 5.0 parts of PAP were charged to obtain a premix. 40 parts of the premix and 60 parts of the clay were charged into a Yariya pulverizer and sufficiently pulverized to obtain a powder.

Example 7 In a flash mixer, 75.25 parts of talc, 5.5 parts of silicic anhydride, 5.0 parts of methoxadiazone, 3.75 parts of chlorbiliphosmethyl, 0.5 part of d, d-praletrin, 5.0 parts of propane amide dimethyl dimethyl acetate myristylate and 5.0 parts of PAP5. 0
Parts were charged to obtain a premix. This premix 40
Parts and 60 parts of clay were charged into a Yariya pulverizer and sufficiently pulverized into a powder.

Example 8 In a flash mixer, 78.5 parts of kaolin, 5.5 parts of silicic anhydride, 0.25 part of d-tetramethrin, velmethrin
0.5 parts, Fenitrothion 3.75 parts, MGK264 1.5 parts, 2-
A premix was obtained by charging 5.0 parts of alkyl-N-hydroxyethyl imitazolinium betaine and 5.0 parts of PAP. 40 parts of this premix and 60 parts of clay were charged into a V-type mixer, mixed uniformly, and sieved with 32 mesh to obtain a powder.

Example 9 In a flash mixer, 78.5 parts of talc, 5.5 parts of silicic anhydride, 1.0 part of d-resmethrin, 5.0 parts of carbaryl,
A premix was obtained by charging 5.0 parts of 2-alkyl-N-hydroxymethylimidazolinium betaine and 5.0 parts of PAP. 40 parts of this premix and 60 parts of clay were charged into a V-type mixer, mixed uniformly, and sieved with 32 mesh to obtain a powder.

Example 10 In a flash mixer, 79 parts of clay, silicic anhydride
5.5 parts, d-cyphenothrin 0.5 parts, propoxur 5.0
Parts, 5.0 parts of polyalkyldi (aminoethyl) glycine and 5.0 parts of PAP were charged to obtain a premix. 40 parts of this premix and 60 parts of clay were charged into a V-type mixer, mixed uniformly, and sieved with 32 mesh to obtain a powder.

Test Example 1 As shown in Table 1, a powder for pests containing amphoteric surfactant and 0.1% by weight of d-tetramethrin, which are the powders of the present invention, and a powder of PAP alone and a powder without surfactant added thereto as a control. , Manufactured in the same manner as in Examples 1 to 3,
Using a German cockroach (adult male), an efficacy test was conducted by a filter paper contact method, and the KT50 value of each was examined. For the filter paper contact method, lay a filter paper on the bottom of a Petri dish with a diameter of 9 cm, take 50 mg of powder, spread the powder with a brush, and release 10 insects during the test all at once. Done.

 The results are as shown in Table 1.

From this result, a suitable concentration of the amphoteric surfactant is 0.1 to
5.0%. In addition, when 5.0% or more is added, liquidity,
The above concentration is desirable because the spraying property is deteriorated.

Test Example 2 Dusts for insect pests according to the present invention as shown in Table 2 were produced in the same manner as in Examples 1 to 3, and for each, an efficacy test was carried out by a filter paper contact method using okadan rubber bugs. The result was obtained. The method was the same as in Test Example 1, and the amount of the powder was 100 mg. As a control, PAP alone was used, and the number of test animals was 10 and 3 repetitions.

Test result: This value is expressed as the percentage of insects turned upside down 30 minutes after the start of contact.

Test Example 3 With respect to the powder for insect pests according to the present invention used in Table 2, an efficacy test was carried out by a filter paper contact method using a pinewood millet, and the following results were obtained. The method was the same as in Test Example 2, and the amount of the powder was 100 mg. The number of test animals was 10 and 3 times.

Claims (4)

(57) [Claims] An insect pest having improved fast-acting properties, comprising an insecticidal component comprising at least one selected from pyrethroid and carbamate insecticides and an amphoteric surfactant. 2. The method according to claim 1, wherein the concentration of at least one insecticide selected from the group consisting of pyrethroids and carbamates is controlled.
The powder for insect pests according to claim 1, which is 0.05 to 5.0% by weight. 3. The pest dust according to claim 1, wherein the concentration of the amphoteric surfactant is 0.1 to 5.0% by weight. 4. The method according to claim 1, wherein the concentration of at least one insecticide selected from pyrethroids and carbamates is controlled.
0.05-5.0% by weight and amphoteric surfactant concentration of 0.1-5.0
The powder for insect pests according to claim 1, which is in weight%.