Preparation of a Thermoplastic Acrylic Resin in Solution

Charge all solvents and 10% of the premixed monomers and 10% of initiator to the reactor with stirring. 

Heat to 80°C - the polymerisation is exothermic - so control the temperature with cooling as necessary to below 10(f C. 

When the initial exotherm is complete add the remaining monomers and initiator as a premix over a three hour period at 90-10(f C. 

Sample for non-volatile content, if below 50% continue heating under reflux, possibly with the addition of a booster shot of peroxide until non-volatile content reaches 50%. 

Cool and discharge through a suitable sized filter. 

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