Method for producing polyacetal resin

• Main Authors: YAMANAKA KOICHI, KAMOSHITA RYOSUKE
• Format: Patent
• Language: Chinese; English
• Published: 04.04.2023
• 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

The invention relates to a method for producing polyacetal resin. Provided is a method for producing a polyacetal resin with which it is possible to stably and continuously produce a polyacetal resin over a long period of time while suppressing the generation of a tar-like precipitate caused by a polymerization catalyst. A method for producing a polyacetal resin, characterized by comprising a polymerization step in which a polymerization reaction is carried out using (a) a cyclic ether and/or a cyclic formal containing at least trioxymethylene, (b) boron trifluoride or a boron trifluoride complex, and (c) an organic solvent. And the organic solvent (c) is a compound represented by a predetermined formula (1). 本发明涉及聚缩醛树脂的制造方法。本发明提供一种聚缩醛树脂制造方法，所述聚缩醛树脂的制造方法能够抑制由聚合催化剂引起的焦油状析出物的产生，并且能够长期稳定地连续生产聚缩醛树脂。一种聚缩醛树脂的制造方法，其特征在于，所述聚缩醛树脂的制造方法包含如下聚合工序：使用(a)环状醚和/或环状缩甲醛、(b)三氟化硼或三氟化硼络合物和(c)有机溶剂进行聚合反应，所述(a)环状醚和/或环状缩甲醛至少包含三聚甲醛，并且所述(c)有机溶剂为由规定的式(1)表示的化合物。