Non-spherical resin particles, manufacturing method thereof, and use thereof

摘要

Disclosed are non-spherical resin particles that allow for improvement of light diffusion, light reflection, and other related properties, and a manufacturing method thereof. The particles have a circular outline when viewed from a direction in which a maximum projected area is produced and a non-circular outline when viewed from a direction in which a minimum projected area is produced, The particles comprise first and second, different resin components (1) and (2), with the second resin component (2) residing locally near the surface of the non-spherical resin particles. The method of manufacturing non-spherical resin particles involves either allowing particles of a resin to absorb a vinyl-based polymerizable monomer contained in an aqueous emulsion followed by polymerization of the absorbed monomer or dissolving a resin in a vinyl-based polymerizable monomer followed by polymerization of the obtained solution in an aqueous medium.

主权项

1. Non-spherical resin particles, each having a circular outline when viewed from a direction in which a maximum projected area is produced and a non-circular outline when viewed from a direction in which a minimum projected area is produced,
each of the non-spherical resin particles comprising a first resin component and a second resin component which is different from the first resin component, the second resin component residing locally near a surface of that particle, wherein: the first resin component is a hydrophilic resin, and the second resin component is a hydrophobic resin, and the hydrophobic resin is a homopolymer or a copolymer of a (meth)acrylic acid ester having a C2-C10 halogenated alkyl group in an ester moiety thereof.