PURPOSE: To obtain a trioxane-containing composition having suppressed decomposition and polymerization tendency of trioxane with heat, etc., decreased formaldehyde concentration and improved storability of trioxane by adding a ketoxime compound to trioxane.
CONSTITUTION: A composition containing trioxane (1,3,5-trioxane) useful as an intermediate of a resin and active component for insecticide, etc., is added with preferably 0.05-10wt.%, especially 0.1-2wt.% of a ketoxime compound, preferably a≤10C ketoxime having high vapor pressure, especially acetoxime, ethyl methyl ketoxime, methyl isoamyl ketoxime, cyclohexanone oxime, etc. The process is effective in suppressing the decomposition and polymerization of molten trioxane in the presence of air, preventing the decomposition of trioxane on an active surface of a solid, capturing formaldehyde in trioxane to decrease the concentration and improving the storage stability of trioxane.
TSUNODA MINORU
JINPO MASABUMI
YOSHIDA KIYOSHI
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