JPS59134703A - Stabilized insecticide composition - Google Patents

Abstract

PURPOSE:An insecticide composition that is prepared by adding one of aromatic secondary amines to an insecticidal composition containing 2H,1,3-thiazintetrahydro-2-(nitromethylene) as a decomposition inhibitor for the active ingredient, thus showing improved stability. CONSTITUTION:At least one selected from aromatic secondary amines such as N-methylaniline, N-methyl-p-toluidine, dicyclohexylamine is added to an insecticial composition containing the compound of the formula, as an active ingredient, which has excellent controlling effect against harmful insect pests to rice plants such as rice bores, leaf hoppers or rice plant hoppers, but less stability to give the objective stabilized insect pest-controlling composition. The composition causes no troubles at all, e.g., chemical injuries to useful crops and toxicity to human bodies and animals. This composition is very effective in keeping its stability, when it is used in the form susceptible to hydrolysis, namely, dust, fine particles, granules or wettable dust.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides 2H,1,3-
thiazinetetrahydro-2-totromethylene) (
It is abbreviated as TTNM. ) as an active ingredient, the invention relates to a stabilized insecticidal composition characterized in that one type of aromatic 82 amines is added as an anti-decomposition agent for TTNM.

T T N M It, JP 50-151882 Publication 8 and JP 11? ) No. 52-151727, it is known to have an excellent effect on controlling rice pests, such as the Japanese snail and the black-spotted plant. However, TTNM has the disadvantage of poor stability. This is particularly noticeable when TTNM is supported on a mineral carrier to form a powder, a DL (driftless) type powder, a single fine granule, or a wettable powder. This phenomenon is caused by the surface activity of the powder carrier, but TTNM itself also decomposes due to heat, light, wood, etc. Therefore, this unfavorable property poses a major hindrance in formulating agricultural chemicals containing TTNM, and a solution to this problem is desired.

Until now, as a prior art for preventing the decomposition of TTNM,
In JP-A-57-2208, the use of polyhydric phenols in which two to three hydroxyl groups are bonded to a benzene nucleus, such as resorcinol, α-naphyl, β-naphthol, hydroquinone, and catechol, is proposed. has been done. Also, JP-A-5
7-18604, potassium citrate, potassium oxalate, potassium malonate, potassium acetate, potassium malate, potassium succinate, potassium benzoate, potassium phthalate, potassium substituted benzoate, potassium lactate, potassium tartrate, olein. Potassium acid, potassium linoleate, potassium malate, malium palmitate,
Potassium salts of organic acids such as potassium stearate and potassium propionate;
Potassium phosphatide, potassium tertiary phosphate, potassium pyrrolinoate, potassium metaphosphate 11, potassium tripolyphosphate, potassium hexametaline acid 11, potassium oxyacid of phosphorus with alkyl phosphate 11J! In JP-A-57-18605, the use of
The use of urea and urea has been proposed, with a focus on thermal stability. However, these techniques cannot necessarily be said to be satisfactory in terms of the safety effect of TTNM.

The inventors of the present invention have conducted various researches regarding the stability of TTNM in preparations containing TTNM.As a result,
It has been found that by adding aromatic secondary amines, the decomposition of TTNM can be significantly suppressed.

Preferred y+6 group secondary amines include N-menalanili7, N-methyl-p-toluidine, dicyclo'-xylamino, nphenylamine, N-isopropyl-N
'-Phenyl-p-phenylenecyamine, N,N'-diphenyl-P-phenylenecyamine, N-cyclohexyl=N'-phenyl-P-phenylenediamine, N,N
"-G-P-1 lilu p-phenylenediamine, N-phenyl-β-naphthylamine, N,N'-phenylbenzicine, N,N'-di-β-naphthyl-p-phenylenecyamine, etc. I can do it.

The insecticidal composition of the present invention, which is made by adding a unibody agent to these decomposing agents or a unibody agent, does not cause any problems in terms of chemical damage to cultivated crops or toxicity in public.

In addition, agricultural chemical formulations to which the stabilizer described in 1-1 is added are not particularly limited, but include powders, DL-type powders, fine granules, 1 grain, and water-based powders, which are most susceptible to decomposition. When added to preparations using powdered carriers such as Japanese preparations, the decomposition prevention effect is significantly improved.

It is generally sufficient to add these stabilizers to the formulation in an amount of 0.1 to 5% by weight in the formulation. However, the type of stabilizer, composition of active ingredients-1-1 type of carrier, agent 41
1. This addition h)- may be increased or decreased depending on the environmental conditions in which the product is stored. In addition, when storing the base as it is, the amount added to the base may vary depending on the type of stabilizer and the environmental conditions in which it is stored, but it should be 1 to 10% by weight.
The range is appropriate, and even if the amount of additives is increased to some extent by 8 degrees, it will not adversely affect the main agent.

Carrier materials that can be used in the present invention include general mineral carriers such as clay, talchenite, acid clay, diatomaceous earth, silica sand, and zeolite, or carbonic acid, +lz et al., and magnesium carbonate. , sulfuric acid, ammonium sulfate, calcium sulfate, synthetic hydrated silicic acid, silica magnesium J1, aluminum fluoride 1, sucrose cyclohexanone, inphoron.

N, N'-7 methylformamide and the like may be mentioned.

The following is an example of the insecticidal composition of the invention; the content of the present invention is not limited to the above, but is not limited to only H, 4, and stabilization containing effective ingredients. Addition of agent %j,
, Types of various adjuvants and their addition j, j, , Formulation on the other hand θ,
etc., may be modified and implemented as appropriate. In addition, all parts in the examples refer to the profit part.

2 parts of TTNM, 1 part of white carbon, 2 parts of N-methylileaniline and 95 parts of clay are uniformly mixed and ground to obtain the powder of the present invention.

Powder waste example 2 Powdered j T T N M 27<H, white carbon lγ
2 parts of N-methyl-p-)luidine and clay
After uniformly mixing 95 parts, the mixture is pulverized to obtain the powder of the present invention.

kL Example - 2 parts of TTNM, 1 part of white carphone, 1 part of dicyclo xylamine and 96 parts of clay are mixed uniformly and then ground to obtain the powder of the present invention.

Example 4 2 parts of persimmon TTNM, 1 part of white carbon, 1 part of diphenylamine and 96 parts of clay are uniformly mixed and then pulverized to obtain the powder of the present invention.

Granules TTNM 2 parts, white carbon 1 part, N-isopropyl-N'-P-phenylenecyamine
After uniformly combining 11 parts and 96 parts of clay,
The granules of the present invention are obtained by pulverization.

A powder of 2 parts of TTNM, 1 part of white carphone, 1 part of N-phenyl-β-tephthylamine, and 96 parts of clay are uniformly mixed together in 4 parts and pulverized to obtain the powder of the present invention.

Mix well 92.5 parts of clay, 165 parts of polyvinyl alcohol, and 15 parts of water, knead, and extrude through a wire mesh with a diameter of 0.8 mm! - Dry at 1
4.1.) Prepare empty granules that have been sieved to a size of 32 to 32 mm. Separately, 3 parts of TTNM, 1 part of white carbon and 2 parts of diphenylamine were mixed uniformly and then ground.

The above-mentioned empty granule L agent is added to this mixture and mixed, and the surface of the empty granule is coated with TTNM to obtain the granule of the present invention.

Further, Emulsion J Emulsion 25 parts of TTNM, 2 parts of diphenylamine, 4 parts of polyoxine ethylene alkylphenyl ether and 69 parts of cyclohexanone are uniformly dissolved and mixed to obtain the emulsion of the present invention.

χ 麓溌['' Irrigation side TTNM 50 parts, diphenylamine 3 parts, white carb〉' 20 parts, polyoxyethylene alkylphenyl polymer ester 51, lignin sulfonic acid 1
After 13 parts of λ and 22.5 parts of clay are uniformly blended into 4j, the mixture is finely pulverized to obtain the wettable powder of the present invention.

Add 90 parts of TTNM, 5 parts of diphenylamine and 5 parts of white carbon, mix uniformly, and grind.

20 parts of the preparation prepared in accordance with the Example was placed in a 50 m cubic volume 4) a-bok-bok galanubin, and 30 parts were stored in a thermostat at 40°C for 1 hour. Thereafter, the content of TTNM (11) was analyzed graphically using Kanuchroma 1 to determine the residual content (%) relative to the initial content value. The obtained results are shown in Table 1.

Claims (1)

[Claims] A stabilized insecticidal composition containing 2H,1,3-thiazinetetrahydro-2-and tromethylene as an active ingredient, characterized by adding one type of aromatic secondary amine. Insecticidal composition.