Liquefaction of lingo-cellulosic biomass is one of the thermo-chemical conversion processes for developing new materials, adhesives, preservatives and energy systems. The process also provides an opportunity to utilize waste wood such as saw-dust, woody wastes, branches and twigs for the development of value added products. Thus, this research paper deals with an investigation of antifungal and antitermite properties of cashew nut shell liquor (CNSL) based liquefied wood at different liquid ratio. The woody waste were liquefied by using cashew nut shell liquor (CNSL) as liquefying media at 140oC for 120 minutes at various wood : CNSL ratio as 1:3, 1:4 and 1:5 using mild acid as catalyst at different reaction conditions. In all the cases, a viscous and sticky black liquid was obtained which was used for protection of wood against of fungi and termite. The highly perishable rubber wood specimens were treated by employing impregnation pressure processes following Indian Standard No.4873:1968. The treated sample along with control specimens have been evaluated for their efficacy as wood preservatives and periodic observations shows that the formulated preservatives increased the durability of timber against termites and wood rotter fungi. Wood polyols at higher liquid ratio show complete protection against timber against termites, wood rotter fungi than of lower liquid ratio. The liquefaction of wood open up new avenues for utilization of woody bio - waste as raw materials for production of green material to reduce the carbon foot print from earth atmosphere.

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