To obtain the subject inexpensive flame-retardant yarn having low toxicity of combustion gas, excellent strength, excellent durability of washing resistance and handle, useful as protection clothing, etc., an industrial material, etc., comprising a vinyl alcohol-based polymer, a halogen-containing polymer and specific fine particles in a prescribed ratio.
This yarn is a sea-island yarn comprising a vinyl alcohol-based polymer 1 and a halogen-containing vinyl polymer 2 such as a vinyl chloride- based polymer, etc. The component 1 is a sea component, the component 2 is an island component and the blending ratio of the component 1/the component 2 is 95/5 to 55/45 by weight. Preferably the yarn contains 0.1-10 wt.% based on the total weight of the polymers of fine particles 3 having 0.8-4.6 m2 surface area based on 1 g of one or more compounds selected from the group consisting of a tin compound such as tin oxide and an antimony compound such as antimony pentoxide.
SATO MASAHIRO
MAEDA YOSHINUKI
OMORI AKIO
