| abstract |
(57) [Summary] [PROBLEMS] To provide a method for producing a meta-aramid fiber structure dyed in various hues and excellent in light fastness. SOLUTION: A phthalocyanine dye containing a cationic transition metal having a dye matrix having a molecular weight of 1,000 or more is prepared by using a fibrous structure comprising a meta-aramid fiber containing (1) an easy dye, (2) an ultraviolet absorber, and (3) a flame retardant. 1 with a dye bath containing A method for improving light resistance of a meta-aramid fiber structure, wherein the dyeing is performed at a temperature of from 00 ° C to 150 ° C. |