The need to remove VOCs from paint products is driven by several factors. Firstly, users, whether commercial or domestic, of the final paint products prefer to avoid creating an unpleasant environment when the paint product is applied. Secondly, in some product sectors legal limits on residual VOCs are being introduced or tightened further in order to limit exposure to compounds that may pose a health risk on lengthy exposure. Thirdly, if the compounds can be removed in a non-destructive way there is an opportunity to recycle them back into the process and reduce monomer usage. General and specific examples of the basic polymerisation chemistry are outlined in Figure 3. The reactions which produce these aqueous polymers are all instances of Addition Polymerisation of Alkenes. Generic initiator monomer polymer