METHOD FOR PRODUCING PESTICIDE (VARIANTS) Russian patent published in 2005 - IPC

FIELD: chemical technology, agriculture, pesticides.

SUBSTANCE: invention relates to technology for producing agent used for biological protection of plants and concerns a method for producing pesticide. Method involves extraction of micromycetes of family Mortierella or Pythium biomass with liquid extractant taken among group comprising lower alcohols, saturated or unsaturated hydrocarbons comprising up to 10 carbon atoms in their molecule, their halogen-derivatives, inert gases, nitrogen, nitrous oxide, carbon dioxide and their mixtures, separation of extract and addition inactive components to extract to obtain the end product. In the process of extraction pressure in extractive mixture is dropped periodically to value providing boiling up extractant and then pressure is increased to the parent value. Invention provides reducing energy consumptions and intensification of extraction process.

EFFECT: improved producing method.

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