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    • 5. 发明专利
    • Method for manufacturing polyacetal copolymer
    • 制备聚乙烯共聚物的方法
    • JP2014105278A
    • 2014-06-09
    • JP2012258876
    • 2012-11-27
    • Polyplastics Coポリプラスチックス株式会社
    • MASUDA EIJIKADOMA TOMOHIROHORIGUCHI TADAHIRO
    • C08G2/10
    • C08G65/266C08G2/06C08G2/10C08G2/18C08G2/28
    • PROBLEM TO BE SOLVED: To realize, on an occasion for manufacturing a polyacetal copolymer, a high polymerization yield and a high quality by deactivating a catalyst easily and efficiently based on a simple process despite the orchestration of a facility and an operation technique requiring no washing processes.SOLUTION: The method of the present invention is used for manufacturing a polyacetal copolymer including, as a main monomer (a), trioxane, and, as a comonomer (b), a cyclic ether and/or cyclic formal possessing at least one carbon-carbon bond. In this method, copolymerization is performed by using a specified heteropoly acid as a polymerization catalyst (c), and the polymerization catalyst (c) is deactivated by adding a specified salt (d) to the obtained reaction product and then melt-mixing the resulting mixture. It is desirable for the heteropoly acid to be selected from among phosphomolybdic acid, phosphotungstic acid, etc. and for the salt (d) to be selected from among sodium carbonate, sodium bicarbonate, sodium formate, etc.
    • 要解决的问题:为了实现在制造聚缩醛共聚物的情况下,通过简单的方法,通过使设备的调配和不需要洗涤的操作技术而使催化剂容易而有效地使催化剂失活,具有高的聚合产率和高质量 方法:本发明的方法用于制造包含作为主要单体(a),三恶烷和作为共聚单体(b)的环状醚和/或环状缩聚物的聚缩醛共聚物,其具有至少一种 碳 - 碳键。 在该方法中,通过使用规定的杂多酸作为聚合催化剂(c)进行共聚,通过在得到的反应产物中加入规定的盐(d),使聚合催化剂(c)失活, 混合物。 杂多酸优选选自磷钼酸,磷钨酸等,以及盐(d)选自碳酸钠,碳酸氢钠,甲酸钠等。