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公开(公告)号:US3954840A
公开(公告)日:1976-05-04
申请号:US441626
申请日:1974-02-11
申请人: Gentaro Yamashita , Yasushi Tsuru , Kiyoshi Yamamoto , Moriharu Yamamoto , Nobuo Sakaiya , Toshihiro Aoyama , Tadao Komoriya
发明人: Gentaro Yamashita , Yasushi Tsuru , Kiyoshi Yamamoto , Moriharu Yamamoto , Nobuo Sakaiya , Toshihiro Aoyama , Tadao Komoriya
IPC分类号: C07C63/40 , C08G63/54 , C07C69/76
CPC分类号: C08G63/54 , C07C63/40
摘要: A novel 1,3,5,7-naphthalenetetracarboxylic acid, an alkali salt thereof, or an ester thereof, and a novel process for preparation thereof, and method of effective purification thereof.
摘要翻译: 一种新的1,3,5,7-萘四羧酸,其碱金属盐或其酯,及其制备方法及其有效的纯化方法。