| 摘要 |
PURPOSE:To produce the titled fiber having high fiber-generation density and yield and excellent crystallinity and mechanical strength, by supplying a liquid mixture of a hydrocarbon and a beta-diketone metal complex together with hydrogen gas to a heating zone and carrying out the thermal decomposition of the hydrocarbon at a specific temperature. CONSTITUTION:A liquid mixture of (A) a hydrocarbon such as benzene and (B) a beta-diketone metal complex, preferably a beta-diketone complex of iron, cobalt or nickel is supplied together with (C) hydrogen gas to a heating zone, and thermally decomposed at 800-1,800 deg.C to obtain the objective fiber. The concentration of the component B in the liquid mixture is preferably 1X10<-2>-30wt%. The feeding rate of the hydrogen gas is preferably >=10ml/min per 1g of the above liquid mixture.
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