Modified Phenol Formaldehyde Resin

Ingredients:

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

Preparations:

• 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.

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%.

Post-Production:

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