申请人:Teijin Limited
公开号:EP2147945A1
公开(公告)日:2010-01-27
A process for production of a plant-derived component-containing polycarbonate represented by the following formula (3):
(wherein R1-R4 each independently represent a group selected from among hydrogen, alkyl, cycloalkyl and aryl, and n is the number of repeating units), by melt polycondensation using as the starting materials a diol represented by the following formula (1), having a total content of Na, Fe and Ca of no greater than 2 ppm and a purity analysis value of at least 99.7% by gas chromatography:
(wherein R1-R4 each independently represent a group selected from among hydrogen, alkyl, cycloalkyl and aryl),
and a carbonic acid diester represented by the following formula (2), having a total content of Na, Fe and Ca of no greater than 2 ppm and a purity analysis value of at least 99.7% by gas chromatography:
(wherein R5 and R6 are groups selected from among alkyl, cycloalkyl and aryl, and R5 and R6 may be the same or different groups).
由下式(3)表示的含植物衍生成分聚碳酸酯的生产工艺:
(其中,R1-R4 各自独立地代表一个从氢、烷基、环烷基和芳基中选出的基团,n 是重复单元的数目),使用下式(1)代表的二元醇作为起始原料,通过熔融缩聚法生产,该二元醇中 Na、Fe 和 Ca 的总含量不超过 2 ppm,气相色谱法的纯度分析值至少为 99.7%:
(其中 R1-R4 各自独立地代表一个选自氢、烷基、环烷基和芳基的基团)、
和下式(2)代表的碳酸二酯,其 Na、Fe 和 Ca 的总含量不超过 2 ppm,气相色谱法纯度分析值至少为 99.7%:
(其中 R5 和 R6 是选自烷基、环烷基和芳基的基团,R5 和 R6 可以是相同或不同的基团)。