Patent ID: 7235596

Claim:
A flame-resistant fiber comprising at least one type of phosphazene derivative selected from cyclic phosphazene derivatives represented by the following general formula (I) and linear phosphazene derivatives represented by the following general formula (II), a hindered amine derivative containing groups represented by the following general formula (VI), and a thermoplastic resin comprising polyolefin, wherein the fiber contains a total amount of flame-retardant components in a range of 1 to 6 wt % consisting of 0.25-5.0 wt % of the phosphazene derivative and 0.025-3.0 wt % of the hindered amine derivative and the fiber fineness is 0.01-100 dtex: where m represents an integer from 3 to 10 and each of Qs represents a group independently selected from alkoxy, aryloxy, and amino: where n represents an integer from 3 to 10 and each of Qs represents a group independently selected from alkoxy, aryloxy, and amino: where at least one of T 1 , T 2 , T 3 , and T 4 independently represents a group selected from those represented by the general formula (V) and a remaining of T 1 , T 2 , T 3 , and T 4 independently represents a hydrogen atom: where R 1 represents an alkyl group containing 1 to 18 carbon atoms, a cycloalkyl group containing 5 to 12 carbon atoms, a bicyclic or tricyclic hydrocarbon group containing 7 to 18 carbon atoms, or a phenylalkyl group containing 7 to 15 carbon atoms; each of R 2 , R 3 , R 4 , and R 5 independently represents an alkyl group containing 1 to 4 carbon atoms or a pentamethylene group formed by linking R 2 and R 3 and/or R 4 and R 5 ; R 7 represents a hydrogen atom or a linear or branched alkyl group containing 1 to 12 carbon atoms.