Insecticidal drug

 

(57) Abstract:

The invention relates to a means of combating harmful insects. The product contains active ingredients, sumithrin and ATOC, the solvent is ethyl alcohol or isopropyl alcohol and propellant when the ratio sumithrin: ATOC, is from 4:1 to 15:1, and optionally may contain an odorant repellent action. The drug has a high activity and repellent action against flying insects. 4 C.p. f-crystals, 4 PL.

The invention relates to a means of combating harmful insects, and to insecticidal preparations in aerosol packaging.

Known insecticidal preparation containing active substances in the form of pyrethroids: d-phenothrin in mixture with prallethrin, the hydrocarbon solvent is ethyl or isopropyl alcohol and propellant (see US 3934023, 20.01.76).

Known drug has a lack of activity and lack of repellent action.

The technical result is an increase in the activity of the drug especially against flying insects through the use of a new balance of active ingredients.

The technical result is achieved by the fact that in insect the operating substances of sumithrin: ATOC is from 4:1 to 15:1.

Additionally, the drug may contain a perfume with a repellent action, and as a solvent is ethyl alcohol or isopropyl alcohol, in the following ratio, wt.%:

Sumithrin - 0,02 - 2,0

Atok - 0,005 - 0,2

Odorant - 0,1 - 1,5

Ethyl alcohol or isopropyl alcohol - 10 - 70

Propellant - Rest

In addition, the odorant may contain as essential ingredients diethylphthalate, galaxolide, linalyl acetate, Asmodian Forte and methyldihydromorphine.

Sumithrin (d-phenothrin) along with low toxicity for warm-blooded has a strong contact insecticidal action. But since sumithrin has a low vapor pressure, activity of the drug is only based on it will be insufficient. In this regard, the drug entered volatile PYRETHROID - atok (prallethrin). Thus the preparation contains as active ingredients of sumithrin (d-phenothrin) and ATOC (prallethrin), as well as special flavoring, having a repellent effect. As the propellant used a mixture of hydrocarbons, which do not Deplete the ozone layer. As odorants with repellent action used imported perfume brand SC 2467 supplied by the company Quest International (Peliasmobile Forte and methyldihydromorphine.

Preparation of insecticidal preparation is as follows.

The original product to receive the drug is prepared in a reactor with a capacity of 5 m3with a steam jacket heating and agitator. In the reactor, tested for purity, purged with an inert gas, from the site of production preparation served the calculated amount of solvent (ethanol or isopropyl alcohol). Further, when operating the mixer load pre-weighed quantity of the active components of sumithrin, Atoka and fragrances.

The solution is stirred for 20-30 min until complete dissolution of the components, then switched off the stirrer select the sample for analysis to verify the quality of the finished product.

The estimated amount of product produced is poured into the aerosol container, install the valve and dispense into the container, the propellant.

Table 1 shows the insecticidal formulations of the drug.

When determining the insecticidal activity of the drug used laboratory culture aegypti mosquito Aedes aegypti L.

In the chamber of 1 m3which is 300 mosquitoes, sent a stream of content from aerosoling the defeat 99% of the released mosquitoes and expected concentration (15, mg/m3) drug, which causes the death of 99% of mosquitoes for 15 min, and the amount of the drug (Q15, mg/m3), released from a container, which provides the death of 99% of insects within 15 minutes Also specify the time (KT50), for which 50% of insects there comes a state of paralysis (knockdown effect).

Table 2 shows the results of experiments on the determination of insecticidal action for the proposed drug in comparison with the results separately for sumithrin to Atoka and mixtures thereof.

Table 2 shows that the proposed activity of the drug is significantly higher than that of each of the active ingredients separately and mix of sumithrin with atacom. Minor add Atoka sharply increased paralyzing and insecticidal activity of the drug.

In addition, table 2 shows that was tested drug with different ratios of sumithrin: ATOC -4:1, 10:1 and 15:1. With all these ratios, the drug had activity higher than the activity of the drug analogue, for which the ratio of sumithrin (0,1%): ATOC (0.2 and 0.3%) is equal to 1:2 and 1:3 CT50respectively equal to 8.3 and 10.2 minutes

The presence of odorants also enhances the insecticidal activity.

Residual the ora are 300 mosquitoes, within 1 produced 1 g of aerosol. Determined time prior to the occurrence of the knock-down effect and the destruction of 50% of mosquitoes (CT50, min).

Through 1.4 and 6 days in this chamber again let 300 mosquitoes and determine the time before the beginning of knockdown and CT50.

Table 3 shows the results of experiments on the determination of the residual insecticidal action of the proposed drug and separately sumithrin and Atoka.

From table 3 it can be seen that the residual insecticidal activity of the proposed drug is significantly higher than that of each of the active ingredients separately.

To determine the repellent in a clean washed the camera displacement of 1 m3made Zadok (20 x 20 x 20) cm with 25 older mosquitoes. This tank through the hole in the wall of the chamber connected with other similar sized Saddam. Watched the activity of departure mosquitoes from the internal charge in an external empty tank. Registered number of mosquitoes departed within 3 minutes It served as the control value (without processing).

Evaluated the presence and degree of repellent action of the drug in an aerosol container on the basis of a mixture of sumithrin and Atoka (0,1% + 0,01%). To do this, the camera was injected 1 g p the number of mosquitoes, flown into the outer tank.

After this experiment, the camera repeatedly washed and dried. After that, the camera was injected proposed remedy (sumithrin and atok with the addition of odorants), and the experiment was repeated as described above: after 30 min was introduced into the chamber Sadok with 25 older mosquitoes and 3 min after the treatment took into account the number of mosquitoes has flown into the outer tank.

Table 4 shows the results of determining the coefficient repellent (repellent) actions (CODE %).

From table 4 it is seen that the mixture of pyrethroids (sumithrin + ATOC) itself has a fairly high repellent effect. The addition of odorants even more intensified the repellent action of the composition. Thus, it can be considered that the proposed insecticidal drug has along with high insecticidal action and even a significant repellent effect, which are characterized as insecticides and special odorant with repellent properties, which in turn strengthens and insecticidal activity of the drug.

Proposed insecticide designed specially developed to combat flying insects (mosquitoes, mosquitoes, gnats, biting midges) in the southern district is the following substances sumithrin and ATOC, the solvent and propellant, wherein the ratio of active substances, sumithrin : ATOC is from 4 : 1 to 15 : 1.

2.Insecticide designed under item 1, characterized in that the content of active substances selected from the following intervals, wt.%:

Sumithrin - 0,02 - 2,0

Atok - 0,005 - 0,2

3. Insecticide designed under item 1 or 2, characterized in that it further comprises an odorant with a repellent effect in the amount of 0.1-1.5 wt. %.

4. Insecticide designed under item 3, wherein the odorant with repellent action contains as main ingredients diethylphthalate, galaxolide, linalyl acetate, Asmodian Forte and methyldihydromorphine.

5. Insecticidal preparation according to any one of paragraphs.1-4, characterized in that the solvent it contains ethyl alcohol or isopropyl alcohol in an amount of from 10 to 70 wt.%.

 

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