“…However, when applied in emulsion polymerization, the compartmentalized nature of the reaction system affects the performance of any catalytic chain transfer agent (CCTA). Partitioning of the CCTA3b, 3c, 3d, 4 between the aqueous phase and the polymer particles results in lower apparent activities,3a, 3b, 3d, 3e, 4 as only the amount of CCTA in the polymer particles is active in the control of the average molecular weight of the polymer. The course of the polymerization3b, 3g and the final latex properties3a, 3e, 5 [i.e.…”