METHOD OF LARCH COMPLEX TREATMENT Russian patent published in 2009 - IPC C07D311/40 C07D311/32 C08B37/00 C09F1/00 

FIELD: agriculture.

SUBSTANCE: it is provided method of larch complex treatment, including treatment of disrupt larch in medium on the basis of deionised water and organic solvent, in rotor-type pulsating facility - cavitator at temperature of self-heating, with following separation of received pulp on liquid and solid phases, separate treatment of liquid and solid phases, release from solid phase of natural resins, by means of extraction by organic solvent, with following drying and modification of activated wood, release from liquid phase of dihydro-meletin by means of re-extraction by methylthreat butyl ether, with following vacuum evaporation of re-extract and drying of received product, herewith in the capacity of organic solvent there are used nonmiscible with water solvents, selected from the group: tetrachloromethane, chloroform, dichloroethane, or its mixtures at mass correlation deionised water: organic solvent from 9:1 to 8:2, and mass correlation of wood : water-organic medium are 1:8-1:10.

EFFECT: release from larch of dihydro-meletin with grade 93-97%, with yield 2,5-2,6% of mass of bone-dry wood and resinous mass with yield 4,5-5,0%.

4 ex, 1 tbl