CONTINUOUS EMULSION COPOLYMERIZATION OF STYRENE AND METHYL ACRYLATE

For emulsion polymerisation the reactor type has a strong influence on the final product properties, for example the particle size (distribu tion) and the polymer composition. A batch copolymerisation of styrene and methyl acrylate shows strong composition drift. The course of the batch reaction has been explained with model calculations of the poly merisation rates of the monomers. In a single CSTR it has been shown t hat a homogeneous copolymer is formed. It has been demonstrated that i n a series of three CSTR's copolymers with a three modal chemical comp osition distribution are produced.