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Blown Castor Oil

    Blown or oxidized castor oil is prepared by blowing air or oxygen into it at temperatures of 80 1300C, with or without catalyst to obtain oils of varying viscosity .The process is called oxidative polymerization. This increases the viscosity and specific gravity of the oil.

    Blown castor oil is available in the standard viscosity 5-10 poise, 20-25 poise, 30-35 poise, 45-55 poise, 90-110 poise.

    Applications:

             Blown castor oil is a potential replacement for phthalates and is used primarily as a plasticizer for lacquers, inks, adhesives, hydraulic fluids and leathers.

             Castor oil has been long used as a plasticizer for celluloid and in lacquers but the blown oil has been discovered to perform better.

    Chemical, Physical Properties and Specifications:

     

    Colour Gardner

    Acid Value

    Hydroxyl Value

    Iodine Value

    Saponification  Value

    Viscosity Gardner- Holdt/Strokes

    Z-1

    6 Max

    12-16

    151-158

    69-73

    200-220

    Z-1/25-35

    Z-6

    12 Max

    10-17

    130-140

    56-65

    210-230

    Z-5,6/100-150

    Z-8

    16 Max

    11-16

    125-135

    58-66

    220-245

    Z-8/450-600