The dye is closely related to the quality of the polyester masterbatch. What dyes can be used for the high-end polyester masterbatch?

Developed a dye for the onion-type high-grade oil-soluble full-chromatography polyester masterbatch. The 1,4-dihydroxyindole is condensed with an aromatic amine as a raw material to synthesize a blue and green spectrum dye, which is combined with other yellow dyes, which can be used in the polyester masterbatch process. The dye has high purity, high heat resistance, and excellent compatibility. There is no such dye production in China, and most of it needs to be imported.