| 摘要 |
PURPOSE: A black colorant with high blackness for pre-coated metal is provided to have excellent dispersity when manufacturing paint, prevent coherence of pigment, timprove paint storage, and excellent appearance because of improved blackness of a final film. CONSTITUTION: A black colorant with high blackness for pre-coated metal comprises: a step of mixing vinyl chloride vinylacetate copolymer, carbon, and a dispersant; a step of mixing solvent into the mixture; a step of manufacturing a primary product by mixing additional solvent into the mixture; a step of manufacturing a secondary product by processing the first product; a step of manufacturing a tertiary product by mixing cyclohexanone with the secondary product; and a step of dispersing the tertiary product from a basket mill. |
