Acid-dissolvable Melamine Resin Particles
microParticles GmbH has been sucessfully marketing acid-dissolvable melamine resin particles. As a result of recent efforts, the accessible size range could be significantly extended. Currently, monodisperse soluble melamine resin beads are available from nominal 500 nm up to 7 µm in diameter. Contrary to our stock-held highly crosslinked melamine resin research grade beads, these specialty particles are weakly crosslinked and soluble in hydrochloric acid as well as in some organic solvents. They are characterized by excellent monodispersity and highly uniform spherical shape. The particles possess a pH-dependent surface charge and are the most suitable choice for polyelectrolyte coatings or as templates for the preparation of hollow capsules.