| abstract |
To provide a reversibly thermochromic composite fiber having a reversible color change due to a temperature change, having such excellent flame retardancy that flame is hard to spread even if ignition occurs once, and having high safety. n [Solution] Disclosed is a sheath-core type reversibly thermochromic composite fiber including a core comprising a resin, a reversibly thermochromic pigment, and a flame retardant, and a sheath comprising a resin and a flame retardant. |