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

摘要

The invention relates to a method for production of bead polymers with anaverage particle size in the range 1 ~m to 40 ~m, whereby a polymerisablecomposition is dispersed and polymerised in an aqueous phase with generationof a dispersion stabilised by an aluminium compound having a shear speed =103 s-1. A polymerisable composition is used, comprising, based on the totalweight 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 atleast one compound of formula (II) whereby the groups R and 7R to 9R are asdefined in the description. The bead polymers produced by said method areparticularly suitable for the production of moulded bodies with lightscattering properties.