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Acetic anhydride, method of purifying crude acetic anhydride, and method of producing polyoxytetramethylene glycol using acetic anhydride
Acetic anhydride, method of purifying crude acetic anhydride, and method of producing polyoxytetramethylene glycol using acetic anhydride
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机译:乙酸酐,纯化粗乙酸酐的方法以及使用乙酸酐生产聚氧丁二醇的方法
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摘要
The present invention provides acetic anhydride, a method of purifying crude acetic anhydride, and a method of producing polyoxytetramethylene glycol using acetic anhydride.;A method of producing polyoxytetramethylene glycol by ring-opening-polymerizing tetrahydrofuran in the presence of acetic anhydride and an acid catalyst, wherein said ring-opening polymerization is conducted using acetic anhydride having a diketene concentration of 10 ppm or less to produce polyoxytetramethylene glycol.
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