发明名称 |
METHOD FOR CONTINUOUS PRODUCTION OF HIGH-MOLECULAR-WEIGHT POLYCARBONATE RESIN |
摘要 |
<p>The present invention provides an improved method for continuously producing a high-molecular-weight polycarbonate resin by carrying out a linking and highly-polymerizing reaction of an aromatic polycarbonate prepolymer with an aliphatic diol compound wherein the retention time of the reaction mixture in the linking and highly-polymerizing reactor is shortened to achieve excellent performance. The process comprises a process (A) for producing an aromatic polycarbonate prepolymer by polycondensation reaction of an aromatic dihydroxy compound with diester carbonate and a process(B) for conducting linking and highly-polymerizing reaction of the aromatic polycarbonate prepolymer with an aliphatic diol compound in the linking and highly-polymerizing reactor, wherein the aromatic polycarbonate prepolymer produced by the process (A) is fed continuously to the linking and highly-polymerizing reactor, while the aliphatic diol compound is fed continuously thereto under reduced pressure of 10 torr or less to carry out the reaction.</p> |
申请公布号 |
KR20140116890(A) |
申请公布日期 |
2014.10.06 |
申请号 |
KR20147021016 |
申请日期 |
2012.12.27 |
申请人 |
MITSUBISHI GAS CHEMICAL COMPANY, INC. |
发明人 |
ISAHAYA YOSHINORI;HIRASHIMA ATSUSHI;HARADA HIDEFUMI;ITO MAKI;HAYAKAWA JUN YA;ISOBE TAKEHIKO;TOKUTAKE TAICHI;SHINKAI YOUSUKE |
分类号 |
C08G64/30 |
主分类号 |
C08G64/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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