| 摘要 |
The invention relates to a method for reducing the quantity of residual monomers in aqueous polymeric dispersions by aftertreatment with an initiator system essentially comprising: a) 0.001 to 5 % by weight, in relation to the overall amount of monomers used for the production of the polymeric dispersion, of a1) an oxidant R<1>OOH, wherein R<1> represents hydrogen, a C1- to C8-alkyl group or a C6- to C12-aryl group and/or a2) a compound releasing hydrogen peroxide in an aqueous medium and b) 0.005 to 5 % by weight of a reducing agent, in relation to the overall amount of monomers used in the production of the polymeric dispersion, produced from b1) an aldehyde R<2>CH=O, wherein R<2> represents a C1- to C12-alkyl group, containing functional groups and/or may be olefinically unsaturated and b2) an inorganic dithionite and c) catalytic portions of a multivalent metal ion that can be present in several valence states.
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