| 摘要 |
PROBLEM TO BE SOLVED: To provide a production process for trioxane (co)polymerization that uses the installation that permits simple and easy scale expansion. SOLUTION: Trioxane polymer or trioxane copolymer is produced by bringing trioxane, or a mixture thereof with copolymerizable cyclic ethers and cyclic formals into contact with a cationic catalyst. At this time, the polymerizer is previously filled with a powder, the powder is kept in the fluid state and the starting substance of trioxane or a mixture thereof with copolymerizable cyclic ethers or cyclic formals are fed continuously or intermittently together with a cationic catalyst into the polymerizer. During the polymerization, a saturated hydrocarbon of 3-6 carbon atoms is fed into the polymerizer 1 and a part of the hydrocarbon is evaporated to control the temperature in the polymerizer 1 to produce the objective trioxane polymer or trioxane copolymer.
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