| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a polyoxymethylene copolymer by which raw material supply is prevented from becoming unstable caused by a plugged or narrowed piping for supplying a raw material, due to a mixture obtained by contacting and mixing trioxane, 1,3-dioxoran and a polymerization catalyst. SOLUTION: The method for continuously producing the polyoxymethylene copolymer by mixing the polymerization catalyst with the mixed raw material solution of the trioxane and the 1,3-dioxoran, and subjecting the mixture to polymerization is regulated so that the linear velocity of the mixed raw material solution is≥0.1 m/s, and the time from the contacting and mixing of the polymerization catalyst with the mixed raw material solution to the introduction thereof to a polymerizer is 0.1-30 s. COPYRIGHT: (C)2004,JPO
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