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公开(公告)号:US4786738A
公开(公告)日:1988-11-22
申请号:US923266
申请日:1986-10-27
申请人: Yuichi Kita , Kentaro Sakamoto , Masao Baba , Atsushi Okubo
发明人: Yuichi Kita , Kentaro Sakamoto , Masao Baba , Atsushi Okubo
IPC分类号: B01J27/00 , B01J27/18 , B01J27/185 , B01J27/188 , B01J27/25 , B01J31/04 , B01J31/26 , C07B61/00 , C07D207/44 , C07D207/448 , C07D207/452
CPC分类号: C07D207/448
摘要: A method for the production of maleimides, which comprises subjecting maleinamic acids to ring-closure imidation in an organic solvent capable of forming an azeotrope with water in the presence of an acid catalyst at a temperature in the range of 120.degree. to 250.degree. C. while removing the formed water in the form of an azeotrope with said organic solvent and thereafter purifying the produced maleimides.
摘要翻译: 一种生产马来酰亚胺的方法,其包括在酸催化剂存在下,在120-250℃的温度范围内使马来酰胺酸在能够与水形成共沸物的有机溶剂中进行闭环酰亚胺化。 同时除去与所述有机溶剂的共沸物形式的形成的水,然后纯化所生产的马来酰亚胺。