METHOD OF DEEP IMPREGNATION OF WOOD Russian patent published in 2008 - IPC B27K3/08 B27K3/12 B27K3/15 F26B5/04 F26B7/00 

FIELD: technological processes.

SUBSTANCE: preliminary vacuumising is performed at the pressure of 0.05-0.08 MPa, as well as heating of impregnating solution and wood in the same vacuum device, submerging wood into impregnating solution, or in separate vacuum devices, then transferring impregnating solution into vacuum device with wood with preservation of vacuum, wood that is submerged into impregnating solution is maintained in vacuum, after that pressure is increased in vacuum device up to the atmospheric or excessive pressure is pulled, impregnating solution is removed, after wood maintenance it is dried, components of impregnating solution are fixed in wood with the help of fixing compound that forms thermally stable and water-insoluble substances during interaction with impregnating solution. At that processing with fixing compound is done by method of "hot and cold baths", and drying of wood is carried out until residual humidity is 20-25%.

EFFECT: improvement of physical and chemical consumer characteristics.

3 cl, 3 ex