Patents
The invention relates to a process for the upgradation and bleaching of crude bran wax by treating crude rice bran wax with Isopropyl alcohol (IPA) containing 1 to 15 % by volume water to form an IPA-wax suspension to allow precipitation of resinous matter thus formed from the IPA-wax suspension to obtain clear IPA wax solution containing upgraded wax, then the upgraded wax is bleached by adding Sodium Chlorite or Sodium Borohydride to IPA-wax suspension and the molten wax is bleached by adding 30% Hydrogen Peroxide to remove from clear by Ketonic solvents (Methyl Ethyl Ketone). The rice bran oil and the soft wax present in the clear solution are separated by treating the clear solution with Acetone and Methyl Ethyl Ketone.