申请人:Asahi Kasei Chemicals Corporation
公开号:EP1760069A1
公开(公告)日:2007-03-07
A process for producing an aromatic carbonate, which comprises the steps of: (I) transesterifying a starting material selected from the group consisting of a dialkyl carbonate, an alkyl aryl carbonate and a mixture thereof with a reactant selected from the group consisting of an aromatic monohydroxy compound, an alkyl aryl carbonate and a mixture thereof, in the presence of a catalyst, to thereby obtain a high boiling point reaction mixture comprising an aromatic carbonate (a) and an aromatic carbonate ether (b), while withdrawing a low boiling point reaction mixture containing a low boiling point by-product; and (II) separating the aromatic carbonate ether (b) from the high boiling point reaction mixture to thereby obtain a high purity aromatic carbonate.
一种生产芳香族碳酸盐的工艺,包括以下步骤(I) 在催化剂存在下,将选自碳酸二烷基酯、碳酸烷基芳基酯及其混合物组的起始原料与选自芳香族单羟基化合物、碳酸烷基芳基酯及其混合物组的反应物进行酯交换反应,从而得到由芳香族碳酸酯(a)和芳香族碳酸酯醚(b)组成的高沸点反应混合物,同时抽出含有低沸点副产物的低沸点反应混合物;(II) 从高沸点反应混合物中分离出芳香族碳酸酯醚 (b),从而得到高纯度的芳香族碳酸酯。