| 摘要 |
PURPOSE:To produce a high-quality polycondensate in high yields while controlling side reactions, decomposition, etc., by passing a monomer etc. downwardly extruded from a die etc. through the cavity resonator of a microwave heating apparatus and thereby polymerizing the monomer. CONSTITUTION:Microwaves from a microwave oscillator 1 is led to a cavity resonator 4 through an isolator 2 and a waveguide 3, and on the other hand a monomer (or its oligomer or a mixture thereof with a solvent or the like) is extruded from a die 5 into a fiber (rod, pipe, film, or the like) and allowed to flow through the cavity resonator 4 and polycondensed by heating to 100 deg.C or above by heated inert gas (e.g., N2) which is fed from an inlet 8 and discharged from an exit 7, and the produced polycondensate is wound around a roller 9.
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