| 摘要 |
The purpose of the present invention is to provide a plasticizer for aromatic polyester resins, which has excellent heat resistance capable of withstanding melt-mixing with an aromatic polyester resin, improves unravelling (deflocculation) of a pigment in a composition that includes the pigment at a high concentration, and is capable of preventing the formation of coarse particles such as materials not deflocculated. Provided is a coloring agent composition that contains, as essential components, an aromatic polyester resin, a pigment, and an ester-based additive. This coloring agent composition is characterized in that the ester-based additive is an alkyl ester of an aromatic polycarboxylic acid, and the alkyl chain of the alkyl ester is a linear alkyl group having 20-26 carbon atoms. |
