| 摘要 |
PURPOSE:To obtain a polymer bead excellent in light resistance, elasticity, abrasion resistance, impact resistance and mechanical strengths by using a polyurethane-poly(meth)acrylate obtained by reacting a composition comprising a plurality of specified substances in an aqueous suspension. CONSTITUTION:The title bead comprises a polyurethane-poly-(meth)acrylate obtained by reacting a composition comprising a polyisocyanate prepolymer (e.g. a compound obtained by reacting Adeka Polyether G-700, a product of AsahiDenka Kogyo K.K.) with hexamethylene diisocyanate, a (meth)acrylate monomer (e.g. methyl methacrylate) and a radical polymerization initiator (e.g. t-butyl peroxypivarate). |
