FLAME-RETARDANT SYNTHETIC FIBER, FLAME-RETARDANT FIBER ASSEMBLY, PROCESSES FOR PRODUCTION OF BOTH, AND TEXTILE GOODS

摘要

A flame-retardant synthetic fiber having satisfactorily high flame retardance and satisfactorily high flame shielding performance; a flame retardant fiber assembly; processes for production of both; and textile goods.  The flame-retardant synthetic fiber comprises both a polymer (1) which comprises 30 to 70 parts by mass of acrylonitrile, 70 to 30 parts by mass of a halogen-containing vinylidene monomer, and 0 to 10 parts by mass of a vinyl monomer copolymerizable therewith, with each content being per 100 parts by mass of the polymer (1), and at least one metal compound (2) which can promote the dehalogenation and carbonization of the polymer (1) when the polymer (1) is burnt.  The flame-retardant synthetic fiber exhibits a shrinkage variation of 45% or below when the temperature is raised from 50 °C to 300 °C under a load of 0.0054 mN/dtex.