PROCESS OF MAKING MONODISPERSE, SPHERICAL, CONTROLLED-SIZE MICROMETER POLYMER PARTICLES

摘要

The invention relates to a two-stage process for making monodisperse, spherical, controlled-size, micrometer polymer particles from dispersion polymerization compositions, wherein the obtained particles have a diameter from 1 to 10 mm. In one preferred embodiment, the particles are crosslinked. In another preferred embodiment, the obtained particles comprise a dye, preferably a 330-380 nm absorbing dye attached to the polymer. In a more preferred embodiment, the particles are crosslinked and dyed and have pigment-like properties. The polymer particles provide excellent properties, especially high temperature stability and easy applicability as 330-380 nm absorbing pigments in different standard polymers.