CS252895B1 - High Q, O-dimethyl-O- (3-methyl-4-nitrophenyl) thiophosphate emulsion concentrate - Google Patents

Abstract

The solution concerns the finalization of an insecticide. It concerns an emulsion concentrate with a high content of O,O-dimethyl-O-(3-methyl-4-nitrophenyl)-thiophosphate (fenitrotin) in xylene and in the presence of a mixture of anionic and cationic surfactants containing butanol.

Description

The invention solves the finalization of O, O-dimethyl-O- (3-methyl-4-nitro-phenyl) -thiophosphate to form an emulsion-concentrate containing 65 to 85% by weight of phenitrotin, 4-6% xylene and 11-15% of the mixture % of anionic and cationic surfactants containing 10 to 20 wt.% butanol.

The post-emulsion preparation based on O, O-dimethyl-O- (3-methyl-4-nitr-o-phenyl) -thiophosphate (phenitrotin) with the addition of emulsifiers and -organic solvents is incorporated into the form % of an emulsion concentrate containing 50 wt. of the active substance and is referred to as Metation E 50.

Metation E 50 emulsion concentrate containing the active substance fenitrotion is used after dilution with water at a concentration of 0.1-0.2%. It is characterized by a broad spectrum of action, low toxicity to warm-blooded eyes, and is intended for the destruction of whiteflies, aphids, cicadas, measures, herpes, ants, ants, bugs, mosquitoes in the veterinary sector on the control of flies, mosquitoes, lice, cockroaches and those resistant to chlorinated insecticides.

The phenitrotion emulsion concentrate is finalized using an organic solvent of emulsifiers of the Slovanik M 640 type, Slovazol EL, Abeson CaX, and using the active ingredient 93-95% purity. The final product after finalization contained 47.5 to 52.5% phenitrotion 10%.

We have found that O, O-dimethyl-O- (3-methyl-4-nitrophenyl) thiophosphate can be finalized to form an emulsion concentrate containing 65 to 85% by weight of phenitrotion, 4 - 6% of xylene and 11 - 15%. % of a mixture of anionic-a-active and cationic surfactants containing 10-20% by weight of butanol.

The mixture of anionic and cationic surfactants with a limited butanol content has a density determined at 20 ° C of 995 kg / m ³ and a viscosity in the range of 580 to 680, predominantly 600 MPa. with.

Finalization of these substances at room temperature for a period of 30 to 60 minutes gives an emulsion concentrate having the desired content of active substances while satisfying the condition of non-exclusion of the cream.

An advantage of the proposed solution according to the invention is the innovation of a product with a higher active substance content by 30% by weight compared to the production method used hitherto. A further advantage is the saving of organic solvent in the manufacture of the emulsion concentrate, as in its application. Applying the same amount of active ingredient results in savings in packaging.

An advantage of the proposed solution is that the finalization of phenitrotion with an active ingredient content of 65-85% can be carried out on a production plant which is used to produce an emulsion concentrate containing 50% phenitrotion. By reducing the amount of solvent to finalize phenitrotion by 65 to 85%, it makes it possible to increase the production capacity of the plant. The advantages of the subject matter of the invention are illustrated by the following examples and examples:

Example 1

777.7 ml of 94-% phenitrotione [O, O-dimethyl-O- (3-methyl-a-nitrophenyl) thiophosphate] was charged to a 1500 ml flask and stirred at room temperature with stirring. 72 ml of xylene were added and 150 g of Berol 949, i.e. a mixture of anionic and cationic surfactants, also containing 10-20% butanol, were added with stirring, and its viscosity at 20 ° C was about 600 mPa., the density at 20 ^G C is 995 kg / m ^3. Off-months was stirred at room temperature for 1 hour. O-into-a-ka-early pattern was analyzed by -gas cihromatografie, containing 82.5% fenitrotion, wherein the cream value in the sample was zero.

Example 1 and -d 2

The experiment was carried out analogously to -aik-o in Example 1, with -s-a increasing the xylene feed so that the resulting product contained 65% of the active ingredient fenitrotion. D-mines were dosed first-in-xylene, then fenitro-on, and finally Berol 949. The sample was 65% by weight. fenitrotion 100% and the cream value - zero.

The invention can be used in the production of fenitrotione and its finalization into an emulsion concentrate.

Claims (1)

SUBSTANCE Emulsion concentrate high in O, O-dimethyl-O- (3-methyl-4-nitrophenyl) thiophosphate, characterized in that it contains 65 to 85% O, O-dimethyl-O- (3- methyl 4-nitrophemyl thiophosphate, 4 - 6 wt.% xylene and 11 - 15 wt.% anionic and DISCHARGE toation-active surfactants containing 10 to 20 wt.% butanol, the density of which at 20 ° C is 995 µg / m 3 and the viscosity at 20 ° C is 580 to 680 mPa · s.