申请人:MITSUBISHI KASEI CORPORATION
公开号:EP0028353A1
公开(公告)日:1981-05-13
A process for producing an aromatic polyesterpolycarbonate, which comprises polycondensing (a) a dihydroxydiaryl compound, (b) a terephthaloyl chloride and/or isophthaloyl chloride reactant, and (c) phosgene by an interfacial polymerization process in the presence of water, methylene chloride and an acid binding agent thereby preparing an aromatic polyesterpolycarbonate product containing structural unitsoftheformula:
wherein X is a divalent group, and the aromatic rings may be substituted, and structural units of the formula:
wherein X is a divalent group, and the aromatic rings may be substituted, said condensation reaction being characterized in that after at least 95% of the total -COC1 groups in the terephthaloyl chloride and/or isophthaloyl chloride and phosgene as starting materials has reacted, a chloroformate compound or additional phosgene is added to the reaction mixture in an amount to bring the concentration of -COC1 groups to a level of 10 to 1000 µeq/g relative to the total amount of the above starting materials to complete the reaction.
一种生产芳香族聚酯聚碳酸酯的工艺,包括在水、二氯甲烷和酸结合剂的存在下,通过界面聚合工艺将(a)二羟基二芳基化合物,(b)对苯二甲酰氯和/或间苯二甲酰氯反应物,以及(c)光气进行缩聚,从而制备出一种芳香族聚酯聚碳酸酯产品,该产品含有式如下的结构单元:
其中 X 为二价基团,芳香环可被取代,以及式中的结构单元:
其中 X 为二价基团,且芳香环可被取代,所述缩合反应的特征在于,在对苯二甲酰氯和/或异苯二甲酰氯中至少 95% 的 -COC1 基团与作为起始原料的光气发生反应后,向反应混合物中加入氯甲酸酯化合物或额外的光气,加入量为使 -COC1 基团的浓度相对于上述起始原料的总量达到 10 至 1000 µeq/g 的水平,以完成反应。