Dissociation of 1,4-bis (4-phenoxybenzoyl)benzene—Lewis acid complex in a protic solvent
申请人:Arkema France
公开号:US10793500B2
公开(公告)日:2020-10-06
A method for manufacturing 1,4-bis(4-phenoxybenzoyl)benzene, including: reacting terephthaloyl chloride with diphenyl ether in the presence of a Lewis acid, so as to obtain a product mixture including 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex, wherein the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex is, at least partly, in the form of a precipitate; carrying out a solid/liquid separation of the product mixture to obtain a cake comprising the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex precipitate; putting the cake in contact with a decomplexing solvent, wherein the decomplexing solvent is a protic solvent, so as to dissociate the 1,4-bis(4-phenoxybenzoyl)benzene-Lewis acid complex into 1,4-bis(4-phenoxybenzoyl)benzene; and, recovering the 1,4-bis(4-phenoxybenzoyl)benzene. Also, a method for manufacturing a polyaryletherketone polymer starting from 1,4-bis(4-phenoxybenzoyl)benzene manufactured by the above method.
一种制造 1,4-双(4-苯氧基苯甲酰基)苯的方法,包括在路易斯酸存在下,使对苯二甲酰氯与二苯醚反应,从而得到包括 1,4-双(4-苯氧基苯甲酰基)苯-路易斯酸络合物的产品混合物,其中 1,4-双(4-苯氧基苯甲酰基)苯-路易斯酸络合物至少部分以沉淀形式存在;对产品混合物进行固/液分离,得到含有 1,4-双(4-苯氧基苯甲酰基)苯-刘易斯酸络合物沉淀的滤饼;将滤饼与解络合溶剂接触,其中解络合溶剂为质子溶剂,从而将 1,4-双(4-苯氧基苯甲酰基)苯-刘易斯酸络合物解离成 1,4-双(4-苯氧基苯甲酰基)苯;以及,回收 1,4-双(4-苯氧基苯甲酰基)苯。此外,一种以上述方法制得的 1,4-双(4-苯氧基苯甲酰基)苯为原料生产聚芳醚酮聚合物的方法。