The partially purified sisal wax is mixed with the selective solvent at suitable temperature, such as 50°C., if methanol is used in order to dissolve the sisal wax, without dissolving the resin. The solution of the sisal wax in the solvent is separated from the un dissolved resin, and the solution of the sisal wax is cooled to 20°C. - 25°C.or below, to separate the sisal wax from the solvent.
The residual solvent in the purified sisal wax is driven off.
I can treat this purified sisal wax the adsorbing and chemical decolorizing agents, and this is preferred.