The invention belongs to the technical field of preparing a Japan
wax from Japanese
wax tree seeds. The invention is characterized in that: a two-time
filtration process is adopted for
filtration; that is to say, a primary
filtration adopts a 400-mesh stainless steel net to carry out extraction filtration through a
barrel type filter; a secondary filtration is a composite filtration carried out by a plate frame
filter press, filter liquor is firstly filtrated by a piece of
tweel cotton filter cloth, then is filtrated by a piece of industrial
filter paper and is finally filtrated by a piece of industrial filter cloth, and the temperature during the whole filtration process is controlled from 70 to 80 DEG C; No. 120
solvent naphtha is taken as an extraction
solvent, the addition quantity ratio between the extraction
solvent and the Japan
wax tree seed
powder is 3 to 1 (volume ratio), and extraction is carried out for 50-60min when a temperature is raised to 90-100 DEG C; 320-mesh
active carbon is taken as a decolorizer, the addition quantity of the
active carbon is about 5 percent of the weight of leaching liquor, a decolorizing temperature is controlled from 110 to 115 DEG C, and the
active carbon decolorizing time is controlled from 45 to 55min. Due to the technologies of
raw material decladding separation, absorbent decolorizing, two-time filtration, etc., a Japan wax product has higher yield, better purity and quality, higher added value and comprehensive
utilization rate, lower production cost and more
environmental protection.