METHOD FOR OBTAINING PETROLEUM SULFOXIDES Russian patent published in 2018 - IPC C07C315/02 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to a process for production of petroleum sulfoxides that are used as extractants of noble metals, flotation agents – ore collectors, active biological substances, etc. Method includes oxidizing sulfides of sulfurous oils and isolating the desired products, as an oxidizer, an industrial aqueous solution of chlorine dioxide with concentration of 5 g/l and consumption per gram sulfur atom of sulfide equal to 0.5–1.0 mole is used, oxidant is fed into the concentrate at temperature of 20°°C by addition of ClO₂ or by bubbling with air, oxidation product is extracted with chloroform, washed to neutral, dried over MgSO₄, chloroform is distilled off in vacuo at 20°°C.

EFFECT: method for preparation of petroleum sulfoxides is proposed.

1 cl, 3 tbl, 1 ex