For an inverse polymer emulsion to be effective in its end use application, an inverting surfactant, or breaker, must be added. This allows the dispersion of the polymer into the aqueous system. The inverter is typically added at the end of polymerisation and should not detract from emulsion stability.

Alkyl phenol ethoxylates (APE) are effective inverters, but they have a poor environmental profile. Formulators are seeking non-APE solutions with an improved environmental reputation that are also very effective inverters.

We have developed a range of non-APE inverters that offer several performance advantages for inverse polymer emulsions that are formulated using traditional emulsifiers.