| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method for stably manufacturing a powder polymer having an even particle diameter and shape, by controlling a resident time of content in a polymerization reactor in powder bed continuous mass polymerization.SOLUTION: A method for manufacturing a powder polymer includes: continuously supplying under agitation a raw material monomer and a polymerization catalyst for generating the powder polymer to a polymerization reactor where the powder polymer exists; and continuously extracting the powder polymer from a powder polymer extracting port of the polymerization reactor. Furthermore, the method for manufacturing the powder polymer includes performing resident time control for controlling a discharge on-off valve provided on a discharge path of the powder polymer extracting port so as to bring an observation resident time of the content in the polymerization reactor to a target resident time of the content in the polymerization reactor.</p> |
