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1. 发明授权

US3896011A Process for the preparation of sebacic acid 失效
标题翻译：制备癸二酸的方法
公开(公告)号：US3896011A
公开(公告)日：1975-07-22
申请号：US43627574
申请日：1974-01-24
申请人： ASAHI CHEMICAL IND
发明人： ISOYA TOSHIRO , KAKUTA RINICHI , KAWAMURA CHIKAYUKI
IPC分类号： C25B3/10 , C07B29/06 , C07C51/02 , C07C69/50
CPC分类号： C25B3/10
摘要： A process for preparing sebacic acid of high purity in a high yield from adipic acid by conducting the electrolytic condensation of monomethyl adipate at a high current efficiency and a low electric cell voltage. This process is characterized in that electrolytic condensation of monomethyl adipate and an alkali salt thereof is conducted by maintaining the dimethyl sebacate concentration in the electrolytic solution at 5% by weight or higher, and passing the electrolytic solution through an electrolytic cell at a rate of at least 2.5 m/sec, the extraction of dimethyl sebacate formed by the electrolysis is conducted with use of a combination of water and an organic solvent capable of dissolving dimethyl sebacate and insoluble in water, and the hydrolysis of the so recovered dimethyl sebacate is conducted by adding dimethyl sebacate to an aqueous solution of a mineral acid in a specific amount and conducting the hydrolysis while removing methanol.
摘要翻译：通过以高电流效率和低电池电压进行己二酸单甲酯的电解冷凝，从己二酸制备高纯度癸二酸的方法。该方法的特征在于，通过将电解液中癸二酸二甲酯的浓度保持在5重量％以上，通过将电解液以至少2.5m / sec，通过电解所形成的癸二酸二甲酯的提取是使用水和能够溶解癸二酸二甲酯并且不溶于水的有机溶剂的组合进行的，并且如此回收的癸二酸二甲酯的水解通过将癸二酸二甲酯加入到特定量的无机酸的水溶液中并进行水解同时除去甲醇。

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