Preparation of High-Hardness Oxidized Wax

Paraffin wax and polyethylene wax were used as raw materials to prepare oxidized wax by catalytic oxidation. Then, a high hardness wax was prepared by calcified modification. The results showed that when the calcification reaction temperature was 120°C, the reaction time was 4 hr, the quantity of Ca(OH)2 was 3.0%, a modified wax was obtained. Its property (such as hardness) was close to natural hard wax (carnauba wax). The acid value was 3.20 mg(KOH)/g, the saponification value was 78.83 mg(KOH)/g, the needle penetration was 1.7 (0.1 mm), drop melting point was 86.9°C.