发明名称 METHOD FOR PRODUCING POLYCARBONATES
摘要 <p>An improvement to the phase interface process of preparing aromatic polycarbonate is disclosed. The process is characterized in that the phosgenation is carried out at 0 to 40° C., and in that the temperature of the reaction mixture at the time of addition of the catalyst at 10 to 40° C., and in that the molar ratio of aromatic dihydroxy compounds to phosgene at 1:1.05 to 1:1.20. The polycarbonate thus produced is characterized in its low content of carbamates, making it particularly suitable for the preparation of optical storage media.</p>
申请公布号 EP1831283(B1) 申请公布日期 2012.09.26
申请号 EP20050818827 申请日期 2005.12.09
申请人 BAYER MATERIALSCIENCE AG 发明人 KAUTH, HERMANN;EBERT, WOLFGANG;HAESE, WILFRIED;EINBERGER, HELMUT;MEYER, ALEXANDER;FRANKENAU, ANDREAS;FRANZ, ULI;EH, CHRISTIAN;DE VOS, STEFAAN;RUYTINX, BERT
分类号 C08G64/24 主分类号 C08G64/24
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