FUNGICIDAL PYROTECHNIC COMPOSITION Russian patent published in 2020 - IPC A01N25/18 A01P3/00 

FIELD: chemistry.

SUBSTANCE: fungicidal pyrotechnic composition contains a smoke-forming organic fuel, a flame arrester, an oxidising agent and an active fungicidal substance pre-deposited on a porous carrier, wherein the porous support is selected from: diatomite, trefoil, pearlite, kaolin clay, vermiculite, zeolite and/or any mixture thereof, and the porous support is pre-treated with sodium, potassium or calcium alkali in weight ratio of the porous support: alkali of 1:0.01–0.7. To obtain the composition, the active substance is pre-dissolved in a suitable solvent and further mixed in a carrier suspension and a solution of the active substance, followed by removal of the solvent while heating and subsequent mechanical mixing of all components, the porous carrier being selected from: diatomite, trefoil, pearlite, kaolin clay, vermiculite, silica gel, zeolite and/or any mixture thereof, and the porous support is pre-treated with sodium, potassium or calcium alkali in the form of an aqueous suspension with a weight ratio of porous support: alkali of 1:0.01–0.7, while continuously stirring at temperature of 60–100 °C for 2–4 hours with subsequent washing carrier with hot water, grinding and drying.

EFFECT: invention increases efficiency of using the composition.

2 cl, 2 tbl, 3 ex