METHOD OF PRODUCING PURIFIED CANNABIDIOL Russian patent published in 2024 - IPC C07C37/68 C07C37/80 B01D11/02 B01D21/26 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical engineering and specifically to a method of producing purified cannabidiol. Method of producing purified cannabidiol is characterized by the fact that raw material from technological hemp is soaked at t = +80–95 °C in a solution of ethyl alcohol with concentration of 20–22°; intermediate cooling of raw material in a refrigerating chamber to t = +23–27 °C; then raw material is frozen in a low-temperature chamber to t = -27–23 °C; raw material is poured with a solution of ethyl alcohol with concentration of 40–42° at t = -26–21 °C; then the raw material is first squeezed under the press; produced as a result of pressing briquette is crushed to obtain a homogeneous mass; raw material is heated to t = +9–13 °C and poured with a solution of ethyl alcohol with concentration of 40–42°; second pressing of raw material under a press is carried out; combined suspension is heated to t = +23–27 °C and passed through a fine filter; then filtrate is heated to t = +23–27 °C, is sent to a sedimentary type centrifuge, also heated to t = +23–27 °C, wherein there is a process of separating tetrahydrocannabidiol; then suspension and plate-type centrifuge are heated to t = +85–95 °C and the suspension are sent to this centrifuge, wherein the cannabidiol separation process takes place.

EFFECT: invention increases degree of purification and yield of cannabidiol.

2 cl, 1 tbl, 1 ex