申请人:Brunelle Joseph Daniel
公开号:US20050049390A1
公开(公告)日:2005-03-03
Polyether polymers, such as polyetherimides, are prepared by the reaction of a dihydroxy-substituted aromatic hydrocarbon alkali metal salt, such as bisphenol A disodium salt, with a bis(N-(chlorophthalimido))aromatic compound, such as 1,3- and/or 1,4-bis[N-(4-chlorophthalimido)]benzene, in a solvent such as o-dichlorobenzene and in the presence of a phase transfer catalyst such as a hexaalkylguanidinium chloride. Several embodiments may be employed to improve the method. They comprise employing substantially dry reagents, employing a high solids level in solvent, beginning with an excess of bis(N-(chlorophthalimido))-aromatic compound and incrementally adding alkali metal salt, employing alkali metal salt of small particle size, and using reagents of high purity.
聚醚聚合物,如聚醚酰亚胺,是由二羟基取代的芳香烃碱金属盐,如双酚 A 二钠盐,与双(N-(氯酞酰亚胺))芳香化合物,如 1,3-和/或 1,4-双[N-(4-氯酞酰亚胺)]苯,在溶剂如邻二氯苯和相转移催化剂如六烷基氯化胍的存在下反应制备的。可以采用几种实施方案来改进该方法。它们包括采用基本干燥的试剂、在溶剂中采用高固体含量、从过量的双(N-(氯酞酰亚胺基))芳香族化合物开始并逐渐加入碱金属盐、采用小粒径的碱金属盐以及采用高纯度的试剂。