Patent ID: 6274199
Filing Date: 2001-08-14
Classification: B27K,Y10T

Abstract:
A process for the treatment of a wood substrate in order to confer water repellency to the substrate, which comprises the steps of:(a) placing the said wood substrate in a treatment vessel and reducing the pressure in the vessel to remove air in the pores of said substrate;(b) contacting the substrate in said vessel, while reduced pressure is present in the vessel, with an emulsion comprising water, wax, and a surfactant to allow the emulsion to flow into said pores, said contacting being carried out at a temperature at or above that required to cause the wax of said emulsion to change into a molten state;(c) applying a positive pressure to said vessel to force the emulsion into said pores; and(d) releasing the pressure in the vessel and removing said resultant wood substrate from said vessel.