Modified Phenol Formaldehyde Resin


  1. Phenol
  2. Formalin
  3. Caustic Soda
  4. Oxalic Acid


  • One day before, mix 45 kg Caustic Soda with 85 kg water, allow it to cool, and use it in a cool condition.
  • Always use Caustic Soda in a cooled condition.

first stage in an acidic medium and the second stage in an alkaline medium. Below is a summary of the instructions you’ve provided:

1st Stage:

  • Phenol (100% solid): 1200 kg
  • Formalin: 720 kg
  • Oxalic Acid Solution: 384 kg
    • Oxalic Acid: 24 kg
    • Water: 360 kg

2nd Stage:

  • Caustic Soda Solution: 990 kg
    • Caustic Soda: 150 kg
    • Water: 840 kg
  • Formalin: 1440 kg

Manufacturing Process of MPF Resin :

1st Stage:

  1. Mix 24 kg of oxalic acid with 360 kg of water to create a solution.
  2. Add the oxalic acid solution to the kettle containing 1200 kg of phenol and 720 kg of formalin.
  3. Heat the mixture to 70°C, then close the steam valve and let the temperature increase to 80°C.
  4. Fill the jacket with water at 80°C and maintain the temperature for 1-1.5 hours.
  5. After 1.5 hours, circulate water in the jacket and coil, lowering the temperature to 40°C.

2nd Stage:

  1. When the temperature reaches 40°C, add 990 kg of pre-cooled caustic soda solution (150 kg caustic soda mixed with 840 kg water).
  2. The temperature will rise; slow down the cooling rate.
  3. When the temperature reaches 40°C, add 1440 kg of formalin, close the cooling valve, and maintain the reaction at 70°C for 1 hour.
  4. When the flow time is 15-16 seconds, start the cooling process until the temperature reaches 40°C.
Liquid MPF Resin

Resin Property Check:

  1. Flow time (B-4 Cup): 18-22 seconds.
  2. Water tolerance: 1:9.
  3. pH: 9 to 10.
  4. Check resin properties before unloading.
  5. Resin solid content should be above 40%.


  1. After unloading, send a sample to the lab for further testing.

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