发明授权
US4393009A Process for the preparation of aromatic dicarboxylic acid dichlorides 失效
芳族二羧酸二氯化物的制备方法

Process for the preparation of aromatic dicarboxylic acid dichlorides
摘要:
Process for the preparation of pure aromatic dicarboxylic acid dichlorides which comprises reacting an aromatic dicarboxylic acid or an aromatic dicarboxylic acid mixture with phosgen in one stage and in the presence of an N--C.sub.1 --C.sub.6 -alkyl-pyrrolidine, -piperidine or -morpholine as a catalyst and optionally in a solvent or diluent.
公开/授权文献
信息查询
0/0