| 摘要 |
PURPOSE:The titled composition which can be powder-molded by mixing it with rigid PVC resin by cold blending, does not leave any foreign matter in a molding and has excellent coloring property, comprising a specified dispersant and a pigment. CONSTITUTION:The titled composition is obtained by mixing 15-50wt% dispersant comprising 20-70wt% lubricant for rigid PVC resins, which solid at normal temperature (e.g., ester wax), and 80-30wt% methyl methacryalte resin with 85-50wt% pigment. This composition is mixed with a rigid PVC resin by cold blending, and the mixture is powder-molded. EFFECT:It is possible to reduce molding cost, because it is unnecessary to pelletize the colorant by heat melting or to disperse it by simultaneous application of heat and high-speed shearing during molding.
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