METHOD OF PRODUCING PRACTICALLY DUSTLESS GRANULATE, PRACTICALLY DUSTLESS GRANULATE AND A METHOD OF SOIL DISINFECTION Russian patent published in 1998 - IPC

FIELD: chemical technology. SUBSTANCE: invention describes the improved method of producing practically dustless granulate from tetra- -hydro-3,5-dimethyl-1,3,5-thiadiazine-2-thione by exchange reaction between methylamine, carbon disulfide and formaldehyde or by exchange reaction between N-methyldithiocarbamic acid methylammonium salt and formaldehyde. Exchange reaction is carried out in the presence of at least one of diaminoalkylene of the formula (VI): R¹-NH-A-NH-R² where R¹ and R² means independently hydrogen or alkyl group and A means under a definite condition the substituted 1,2-ethylene bridge, 1,3-propylene bridge or 1,4-butylene bridge. The synthesized practically dustless granulate is used for soil disinfection by soil treatment with respect to nematodes and germinating weeds at effective amount. EFFECT: improved method of producing, enhanced effectiveness of granulate. 10 cl, 6 ex