Sandipanirishi insecticide and insecticide and acaricide drug

 

(57) Abstract:

The invention relates to a preparative forms of pesticides and allows you to increase the activity and duration of action insecticide and insecticide and acaricide preparative forms on the basis of synthetic pyrethroids. Sandipanirishi insecticide and insecticide and acaricide composition contains as active substance, a synthetic PYRETHROID, stabilizer suspension, the urea-modified silicon dioxide and a surfactant, and an adhesive substance on the basis of concentrate sulfate-yeast brew, which is a mixture of sodium salts of lignosulfonic acids mixed with reducing and mineral substances, in the amount of 5.1-of 8.7 wt.% The product is stable during storage, the stability of working suspensions is 95-98%. table 2.

The invention relates to a preparative forms of pesticides, and to insecticide and insecticide and acaricide compositions based on synthetic pyrethroids, and can be used in agriculture for pest control plants, vector-borne diseases in veterinary medicine and in other fields.

Insecticides from the group of synthetic pyrethroids (cypermethrin the plants, vector-borne diseases in the veterinary, sanitary and hygienic purposes in everyday life, industry and health care, as well as for the destruction of pests reserves (1).

For these compounds, as for other pesticides, require special care and precision in choosing the type of formulation and its constituent components. The most difficult preparative forms of pesticides are water soluble powders and tablets, having the property of satisfacgermany in the preparation of aqueous suspensions of the working fluid for further use in the protected object.

Known samodisciplina compositions "effervescent" insecticide tablets on the basis of permethrin. Tablets contain insecticide, emulsifying and/or dispersing agent and samodoprinos system capable upon contact with water to emit gas and/or swell. As satisfacgermany system uses sodium bicarbonate and the mixture Hinn and boric acid (2) or sodium bicarbonate, and citric acid (3).

The disadvantage of the above-mentioned compositions is the relatively low stability of the active substance - permethrin - in storage due to the presence of an alkaline reagent is insecticidal activity. This disadvantage increases with the use of less stable synthetic pyrethroids, including cypermethrin, Z-cypermethrin, alphamethrin, bifenthrin.

Free from this drawback and the closest analogue of the present invention to the technical essence is sandipanirishi insecticide and insecticide and acaricide composition comprising as an active substance, a synthetic PYRETHROID, surfactant, stabilizer suspension and samodoprinos system based on urea and modified silicon dioxide. As a synthetic PYRETHROID used Z-cypermethrin, alphamethrin, bifenthrin (4).

Tests preparative forms (tablets and powder), made on the basis of this composition showed high insecticidal and insecticide and acaricide activity and stability of the used synthetic pyrethroids for more than two years of storage in a non-hermetic package. Tests also showed that education for sustainable emulsion introduction of the emulsifier is not required, as its role successfully performs a surface-active substance (surfactant). So, stability, homogeneity be cooked is when I plant protection, planted in the open ground, activity and duration of action preparative forms-based impregnated with pyrethroids silicon dioxide significantly depending on weather conditions - rain and winds, washing or blow off preparative form from the surface of plants. In addition, when spraying the fraction of the plant of the drug depends on the ambient temperature and distance of the spray element from plants. This is especially important when spraying using aircraft, when sprayed working suspension at high temperatures, drying up in the air, reaches the plants almost in the form of a dry powder and is not kept on them. As a result, the activity and the duration of preparative forms is reduced.

The present invention is to increase the activity and duration of action insecticide and insecticide and acaricide preparative forms on the basis of synthetic pyrethroids.

This task is solved in that in the known sandipanirishi insecticide and insecticide and acaricide composition containing as an active substance, a synthetic PYRETHROID, stabilizer suspension, urea, modificirovannaja sulfate-yeast brew (XDB), representing a mixture of sodium salts of lignosulfonic acids mixed with reducing and mineral substances, in the amount of 5.1-of 8.7 wt.%.

When used in the composition of the adhesives on the basis of concentrate sulfate-yeast brew excluded dewatering the suspension in the air when spraying, flushing or blowing preparative forms with the surface of the plant when the rains and winds. Thus by adding to the composition an adhesive property is enhanced by its effect on the pest, as well as the effect of the actions of insects as carriers of insecticides on other individuals. Importantly, these effective properties insecticide and insecticide and acaricide composition occur when the content of adhesives based concentrate sulfate-yeast brew in the amount of 5.1-8.7% of wt.%.

The method of obtaining the proposed structure is as follows.

First prepare the modified silicon dioxide is one of the following methods.

Method A. the Dehydrated silica was placed in the apparatus of the vortex layer and at a temperature of 20-25oWith impregnated in an aqueous solution of one-deputizing phosphate potassium or sodium. In Soviet suspension is dried by hot air to a residual moisture content of 3-6 wt.% when the temperature of the exhaust air 80-100oC.

Method B. To a water suspension of hydrated silica gel with a solids content of 4-8 wt.% add the appropriate amount of solution one-deputizing phosphate potassium or sodium and receive samples with different acidity (pH 3-6). The resulting suspension is served in a spray dryer for dehydration. The temperature of the flue gases 250-25oC. the Modified silicon dioxide is captured in the cyclone and wet scrubber.

Received one of the described methods modified silicon dioxide load in the mixer, soaked at a temperature of 60-70oWith preheated to the same temperature corresponding PYRETHROID and receive the charge. Then this mixture in predetermined weight relationship is mixed with other components: urea, surface-active agent (a mixture of alkylbenzenesulfonates sodium), stabilizer suspension (ammonium or calcium salt of lignosulphonic acid) and an adhesive-based concentrate sulfate-yeast brew. The resulting mixture is ground in the mill, average in the mixer. If necessary, this mixture by pressing get a tablet, for example, with a diameter of 30 mm and a weight of 8 g

The proposed composition is stable during storage. Received from him the tablets samodoprinos in water for 1-3 minutes. Working suspension composition have high stability (uniformity), which according to GOST 16784-79 is 95-98%. In the composition does not use scarce and expensive components.

Insecticide and insecticide and acaricide activity of the formulation composition with the addition of adhesives based on CSDB was studied in laboratory conditions (in protected or open ground).

Range of action:

SEM. weevils: Apple pollen beetle, raspberry-strawberry weevil. SEM. aphids: green Apple aphids, cucumber aphid. SEM. leafroller: Codling moth, Oriental moth. SEM. ermine moth: Codling moth, Diamondback moth. SEM. of pierids: boyaryshnia, cabbage butterflies. SEM. the liquidation: gooseberry family Ognevka, meadow moth. SEM. Sevki: cabbage pearl, pearl cotton. SEM. leaf: Colorado potato beetle, beet blaska. SEM. the whitefly greenhouse whitefly, citrus whiteflies.

Scope of application:

Apple, pear, quince, currants, CR is.

Biological efficacy of the drug against:

- the Colorado potato beetle in Moscow, Bryansk, Belgorod oblasts, Krasnodar Krai, Republics of Belarus and Ukraine - 95-100%;

- Codling moth in the Krasnodar region, Tambov region 85-96,8%;

- leafrollers fruit in the Tambov region, the Republic of Azerbaijan 81-96%;

- cucumber aphid in the Moscow region - 94%;

- greenhouse greenhouse whitefly in the Moscow region, the Republic of Uzbekistan - 70-95%;

- cabbage moth in the Moscow region, Krasnodar territory, the Republic of Ukraine - 92-100%;

- cabbage moth in the Moscow region, Krasnodar territory - 90%;

- cabbage Sevki in the Moscow region, Krasnodar territory, the Republic of Ukraine - 85%;

- raspberry-strawberry weevil in the Moscow region - 100%;

- the liquidation gooseberry family in Moscow, Tambov oblasts - 92%;

- grape leafroller in the Krasnodar region is 84%.

Data on comparative activity preparative forms and duration of action of the active substance for the proposed structure and prototype are shown in table 2.

Sources of information

1. Nauman K. Synthetic pyretroid insecticides: chemistry and patents { vol. 5}. Synthetic pyretroid insecticides and propertiesdom), published 21.11.84,

3. UK application 2184946, class a 01 N 25/08. R. Novo Industrials (Dep.) (United Kingdom), published 08.07.87,

4. Russia's bid 93027421, LLC NPP "VARTAN" (Russia), published 20.06.96 (BI 17).

Sandipanirishi insecticide and insecticide and acaricide composition containing as an active substance, a synthetic PYRETHROID, stabilizer suspension, the urea-modified silicon dioxide and a surfactant, wherein the composition further comprises an adhesive substance on the basis of concentrate sulfate-yeast brew, which is a mixture of sodium salts of lignosulfonic acids mixed with reducing and mineral substances, in the amount of 5.1-of 8.7 wt.%.

 

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