31305836colorantPT2026-03-30 20:22:17UF31305837colouring matterNDUF31305838matter, colouringNDUF31305839coloring matterNDUF31305840matter, coloringNDBT31298939materials by functionPTNT31319782dyePTNT31319786pigmentsPTNT31319788[colorant for dye and pigment]PT