ABSTRACT
A coalescing agent (coalescent agent, coalescing aid) is typically a solvent with volatility such that it remains with the film, after the water has evaporated, in order to allow the polymeric particles to coalesce. However, eventually, it completely evaporates from the coating. Coalescing agents are defined as additives that "reduce the Tg (glass transition temperature) of the emulsion polymer so that efficient film formation can occur at the
Figure 14.1 Film-forming process for polymeric dispersion.
