METHOD FOR PRODUCTION OF BEAD POLYMERS WITH AN AVERAGE PARTICLE SIZE IN THE RANGE OF 1 UM TO 40UM AND MOULDED MASSES AND MOULDED BODIES COMPRISING BEAD POLYMERS

摘要

The invention relates to a method for production of bead polymers with an average particle size in the range 1 µm to 40 µm, whereby a polymerisable composition is dispersed and polymerized in an aqueous phase with generation of a dispersion stabilized by an aluminium compound having a shear speed ≥10 s-1 . A polymerisable composition is used, comprising, based on the total weight thereof, a) more than 50.0 wt. % of at least one compound of formula (I), whereby the groups 1R to 6R are as given in the description, b) 0.1 wt.% to 10.0 wt. % of at least one cross-linker and d) less than 49.9 wt.% of at least one compound of formula (II) whereby the groups R and 7R to 9R are as defined in the description. The bead polymers produced by said method are particularly suitable for the production of moulded bodies with light scattering properties.