| abstract |
The invention relates to a use of a device for addition of at lest one solid or viscous liquid additive, or solvent-dispersed additive into a reactor for the production of cross-linked fine-particulate polymers by copolymerisation of (a) water-soluble, monoethylenically-unsaturated monomers and (b) 0.001 to 5 mol. %, based on monomers (a), of at least two polymerisable groups containing monomers, (c) 0 to 20 mol. %, based on monomers (a), of water-insoluble monoethylenically-unsaturated monomers. Said device comprises at least one screw for the supply of the at least one additive and the at least one screw terminates in an addition opening essentially flush with the reactor inner wall. |