发明名称 |
Processes for producing aromatic polycarbonate oligomer and aromatic polycarbonate. |
摘要 |
<p>A process for producing continuously an aromatic polycarbonate oligomer by reacting an aromatic dihydroxy compound and an alkali metal base or an alkaline earth metal base with a carbonyl halide compound comprises: (1) feeding continuously to a tank reactor an aromatic dihydroxy compound, water, a molecular weight controlling agent, a polymerization catalyst, a carbonyl halide compound, and an organic solvent, and an alkali metal base or an alkaline earth metal base in an amount of 1.15 - 1.6 equivalents based on the aromatic dihydroxy compound, (2) carrying out the reaction with a residence time as defined by the following formula, log Y < - 2.19 X + 1.84 (0.0005 </= X < 0.84, 1 </= Y < 69> where X is an amount of the polymerization catalyst in terms of mole % based on the amount of mole of the aromatic dihydroxy compound fed per unit time, and Y is a residence time (min.), and (3) continuously withdrawing the reaction mixture from the tank reactor to obtain an aromatic polycarbonate oligomer having a number average molecular weight of 1,000 - 10,000. An aromatic polycarbonate is produced by polycondensation of the aromatic polycarbonate oligomer.</p> |
申请公布号 |
EP0581074(A2) |
申请公布日期 |
1994.02.02 |
申请号 |
EP19930110878 |
申请日期 |
1993.07.07 |
申请人 |
MITSUI TOATSU CHEMICALS, INC. |
发明人 |
TOTANI, YOSHIYUKI, MITSUI TOATSU KAGAKU;HIRAO, MOTOKAZU;ITO, TOMONORI, MITSUI TOATSU KAGAKU;NAKATSUKA, MASAKATSU;YAMAGUCHI, AKIHIRO;GOTO, KEN-ICHI;KUROKI, TAKASHI;MORI, YUKIKO;OBUCHI, SHOJI;OHTA, MASAHIRO |
分类号 |
C08G64/24;(IPC1-7):C08G64/24 |
主分类号 |
C08G64/24 |
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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