| 摘要 |
PURPOSE:To improve the whiteness, weightiness, etc., of a molding, which are required when it is used in the production of beads for games and spheres for imitation pearls, by adding zirconium oxide as a filler to an amino resin molding material containing a curing agent, a mold release, a colorant, etc. CONSTITUTION:An amino resin (e.g., urea resin or melamine resin) is mixed with a filler comprising zirconium oxide, and further mixed with a curing agent (e.g., phthalic anhydride), a mold release (e.g., zinc stearate), a colorant, etc. to obtain the purpose amino resin molding material. The amount of the zirconi um oxide added is suitably 3-80wt.% based on the total. By molding the obtained amino resin molding material under heat and pressure by compression molding, extrusion molding, injection molding or the like, a molding excellent in whiteness, weightiness, etc., can be obtained with good moldability.
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