| 摘要 |
PURPOSE:To obtain a method for dyeing a fiber substance with shikonin, capable of providing a dyed fiber substance having high color fastness to washing. CONSTITUTION:In a dyeing method of a fiber substance which is a material to be dyed, characterized by subjecting the fiber substance to mordanting treatment with a metallic ion and then bringing the fiber substance subjected to mordanting treatment into contact with a shikonin-based dye, the method for dyeing the fiber substance with shikonin is characterized in that the fiber substance subjected to mordanting treatment is brought into contact with a water- soluble polymer or an alkali metal salt of inorganic weak acid before contacting with a shikonin-based dye after mordanting treatment by the metallic ion. |
