Reducing the residual monomer content in aqueous polymer dispersions involves post-treatment by addition of an initiator system containing an inorganic salt of persulfuric acid, a methylketone and optionally a catalytic metal ion

摘要

Reduction of the residual monomer content in aqueous polymer dispersions involves post-treatment by addition of an initiator system containing (a) an inorganic salt of persulfuric acid (0.001-5 wt.%); (b) a methylketone (0.005-5 wt.%); and optionally (c) a metal ion in any valency state (catalytic amount) All amounts are based on the amount of monomers used to produce the dispersion.