MANUFACTURING METHOD OF POLYACETAL COPOLYMER

• Main Authors: KONDO TOMOHIRO, TOKI MAKOTO
• Format: Patent
• Language: English; Japanese
• Published: 18.05.2017
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a manufacturing method of a polyacetal copolymer capable of long term stable operation and high polymerization yield by efficiently suppressing inside scale generation of a polymerization machine and further capable of maintaining polymerization yield even with less polymerization catalyst.SOLUTION: There is provided a manufacturing method of a polyacetal copolymer having a process of supplying trioxane, cyclic ether and/or cyclic formal, a polymerization catalyst, a low molecule weight acetal compound and an organic solvent in a polymerization reaction machine to conduct polymerization and using a compound having a cyclic structure and a compound having a linear structure in combination.SELECTED DRAWING: None 【課題】重合反応機内部のスケール発生が効果的に抑制され、長期安定運転及び高重合収率化が可能となり、さらには少ない重合触媒でも重合収率が維持できる、ポリアセタール共重合体の製造方法を提供する。【解決手段】トリオキサンと、環状エーテル及び／又は環状ホルマールと、重合触媒と、低分子量アセタール化合物と、有機溶剤とを、重合反応機に供給して重合を行う工程を有し、前記有機溶剤として、環状構造を有する化合物と直鎖構造を有する化合物とを併用する、ポリアセタール共重合体の製造方法。【選択図】なし