21 июля, 2015 
Malyar As with the last example, this formulation uses the pre-emulsified monomer technique.
|
Reactor charge |
|
|
Water |
15.0 |
|
Stabilising colloid |
1.0 |
|
Ammonium persulphate |
0.1 |
|
Pre-emulsion vessel charge: |
|
|
Water |
44.9 |
|
Styrene |
21.0 |
|
n-Butylacrylate |
12.0 |
|
Hydroxyethyl methacrylate |
5.0 |
|
Emulsifier |
0.5 |
|
Colloid |
0.5 |
|
Total |
100.00 |
1. Prepare the pre-emulsion by mixing the monomers with the emulsifier and adding colloid dissolved in water.
2. Prepare a solution of stabilising colloid in water in the reaction vessel and add ammonium persulphate.
3. Add 10% of the pre-emulsion to the reaction vessel and heat to 80°C.
4. At 80°C add the remaining pre-emulsion over 2-3 hours.
5. When the addition is complete heat to 90°C and hold at this temperature for 2 hours.
Cool to 50°C and filter via a vibrating screen filter
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