| abstract |
(57) [Summary] [Objective] Coloring of polyamide fiber with excellent compatibility with polyamide, suitable for the production of multicolored dyed yarn with sufficient yarn-forming stability, and excellent in forming a specially shaped hollow cross section. Provide the agent. [Structure] A pigment and / or dye and -X-M (where -X-M is a sulfonate, a phosphate ester salt, a sulfate ester salt and a carboxylate salt) at the end of the molecular chain and / or in the molecular chain. Liquid polyether ester having a hydrophilic group represented by at least one anionic hydrophilic group selected from the group, where M represents an alkali metal or an alkaline earth metal), and 3,000 poises at room temperature. A liquid colorant for use in a polyamide fiber base, which is the following liquid and has compatibility with polyamide. |