Title:
芳香族ポリカーボネートを製造するための重合装置
Document Type and Number:
Japanese Patent JP4152419
Kind Code:
B2
Abstract:
It is a task of the present invention to provide a polymerizer device and a polymerizer system which enable the production, by melt transesterification, of a high quality, high performance aromatic polycarbonate (which is colorless and has excellent mechanical properties) from a molten aromatic polycarbonate prepolymer obtained by reacting an aromatic dihydroxy compound with a diaryl carbonate, wherein the polycarbonate can be stably produced on a commercial scale at 1 to 50 t/hr for a long time. In the present invention, this task has been accomplished by a guide-wetting fall polymerizer device (in which a molten prepolymer is allowed to fall along and in contact with a guide, thereby effecting polymerization of the prepolymer) having a specific structure and a polymerizer system comprising such devices. That is, the device and the system have enabled the stable production of a high quality, high performance aromatic polycarbonate as mentioned above at 1 to 50 t/hr for a long time (more than several thousand hours, e.g., as long as 5,000 hours) without fluctuation of the molecular weight thereof.
More Like This:
Inventors:
Shinichi Fukuoka
Hiroshi Hachiya
Kazuhiko Matsuzaki
Hiroshi Hachiya
Kazuhiko Matsuzaki
Application Number:
JP2006514780A
Publication Date:
September 17, 2008
Filing Date:
June 16, 2005
Export Citation:
Assignee:
Asahi Kasei Chemicals Corporation
International Classes:
C08G64/30; B01J14/00; B01J19/24; B01J19/32
Foreign References:
| WO1999065970A1 | ||||
| WO1999036457A1 | ||||
| WO1999064492A1 | ||||
| WO1997022650A1 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Shinji Oga
Toshifumi Onuki
Shinji Oga
Toshifumi Onuki
Previous Patent: プロセッシングユニットを用いた制御装置および制御方法
Next Patent: FALL TOLERANT DISK DEVICE AND ITS CONTROL METHOD
Next Patent: FALL TOLERANT DISK DEVICE AND ITS CONTROL METHOD