Process of preparing microspheres using electromagnetic radiation

摘要: A method of polymerizing a composition comprising mixture monomers said monomer containing major proportion an unsaturated carboxylic acid and minor crosslinking agent which comprises irradiating in nonpolar nonhydroxylic solvent with electromagnetic radiation having wavelength greater than 180 nanometers preferably less 800 the presence photosensitive initiator, hereinafter referred to as sensitizer, at temperature range from 10° C 90° C, concentration being 20% w/v, isolating polymer so formed.