Production of polymer particles used in e.g. cosmetics, involves adding preset amount of cross-linking vinyl monomer to polymerization reaction mixture, at specific monomer polymerization degree

摘要

A cross-linking vinyl monomer (in mass parts) (0.099-47) is added to vinyl monomer (100) when the monomer polymerization degree is 1-100%. The vinyl monomer is polymerized in a solvent in the presence of a dispersant and a polymerization initiator to produce polymer particles.