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    • 16. 发明授权
    • Method of producing choline of a high purity
    • 生产高纯度胆碱的方法
    • US5618978A
    • 1997-04-08
    • US622082
    • 1996-03-26
    • Shunji HyodaYouichi HasegawaFumio Toda
    • Shunji HyodaYouichi HasegawaFumio Toda
    • C07C213/08C07C213/10C07C215/40C25B3/00C07C209/84
    • C07C213/10C25B3/00
    • A method of producing a choline having a high purity without containing by-products by using a molecule-inclusion complex of the choline as a starting material. A choline inclusion complex without containing by-products is obtained by reacting an aqueous solution of the choline containing, as by-products, those cholines to which are added ethylene oxides with host molecules such as of 1,1'-bis-.beta.-naphthol, and is further reacted with a carbon dioxide gas in order to obtain an aqueous solution of a choline carbonate and/or a choline bicarbonate of a high purity, which is then subjected to the electrolysis using a cation-exchange membrane as a diaphragm, in order to obtain an aqueous solution of the choline of a high purity without containing by-products. The choline that is obtained is a strongly basic compound having a high purity and is very useful as a photoresist-developing solution.
    • 通过使用胆碱的分子包合配合物作为起始原料,生产具有高纯度而不含有副产物的胆碱的方法。 不含有副产物的胆碱包合络合物通过将含有作为副产物的胆碱的水溶液与添加有环氧乙烷的主链分子例如1,1'-双-β-萘酚 并进一步与二氧化碳气体反应,以获得高纯度的碳酸胆碱和/或胆碱碳酸氢盐的水溶液,然后使用阳离子交换膜作为隔膜进行电解, 以获得高纯度的胆碱水溶液而不含副产物。 获得的胆碱是具有高纯度的强碱性化合物,并且作为光致抗蚀剂显影溶液是非常有用的。