Process for producing pearls of expansible polymer and manufactured therefrom

摘要

the polymerization in an aqueous suspension of at least one monomer is carried out in the presence of vinylaromatique compared to the monomer vinylaromatique, 0.01% to 0.6% by weight of at least one polyethylene wax and 0.005 to 0.1% by weight of at least one surface active agent - u00adionique having an hlb value of between 7 and 16.;the materials obtained from the expandable beads prepared according to the polymerization process.