Table 1: The recipe for the poly (St/EHA), and poly (St/MMA/EHA) latexes.
Raw materials | Weight % | |
Initial reactor charge | Co-polymer (St/EHA) | Ter-polymer (St/MMA/EHA) |
De-ionized water | 37.2 | 37.2 |
NP30 (non-ionic emulsifier) | 0.4 | 0.4 |
Sodium acetate (pH stabilizer) | 0.1 | 0.1 |
Monomer mixture (4 h feed) | ||
Styrene | 31.6 | 21.6 |
Methyl methacrylate | ----- | 10 |
2-Ethyl Hexyl Acrylate | 18.4 | 18.4 |
Acrylic acid | 2 | 2 |
Acrylamide | 0.5 | 0.5 |
Desponil LDPS 25 | 2.5 | 2.5 |
Texapone | 0.5 | 0.5 |
Initiator mixture (4 h feed) | ||
KPS (initiator) | 0.3 | 0.3 |
De-ionized water | 6.5 | 6.5 |
Specifications | ||
Solid content % | 53 | 51.5 |
Gravimetric conversion % | 97.5 | 96 |
Viscosity cp | 26000 | 18000 |