| 摘要 |
<p>A colored thermoplastic resin composition comprising a crystalline thermoplastic resin and a black dye contained therein, characterized in that the black dye is one prepared by the reaction of nigrosine with one or more anionic surfactants selected from the group consisting of those of the following items (a) to (d) and that the crystallization temperature of the composition is lower than that of the original thermoplastic resin free from the black dye; a method for molding the composition; fiber-reinforced colored thermoplastic resin compositions; and a method for lowering the crystallization temperature of a thermoplastic resin: (a) sulfate ester surfactants, (b) phosphate ester surfactants, (c) sulfonic acid surfactants, and (d) carboxylic acid surfactants.</p> |
