| abstract |
Process for producing a dispersion, wherein dispersed slightly crosslinked polyvinyl seed particles are swollen with an ion-izing liquid, said seed particles containing covalently linked ionizable groups causing a swelling of the seed particles by the ioniz-ing liquid to form a dispersion of droplets, wherein the resulting droplets after the swelling have a volume which is at least S times that of the seed particles. Said ionizing liquid may be or contain a polymerizable monomer or be charged with such a monomer. Polymerization of the monomers is effected in the droplets during or after the swelling, to form polymer particles. |