发明授权
US06472496B2 Process for production of aromatic polycarbonate resin and molded article of aromatic polycarbonate resin
有权
芳香族聚碳酸酯树脂的制造方法和芳香族聚碳酸酯树脂的成型体
- 专利标题: Process for production of aromatic polycarbonate resin and molded article of aromatic polycarbonate resin
- 专利标题(中): 芳香族聚碳酸酯树脂的制造方法和芳香族聚碳酸酯树脂的成型体
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申请号: US09840144申请日: 2001-04-24
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公开(公告)号: US06472496B2公开(公告)日: 2002-10-29
- 发明人: Kyosuke Matsumoto , Masasi Simonaru , Toru Sawaki , Katsushi Sasaki , Masahiro Murakami , Yoshiki Matsuoka
- 申请人: Kyosuke Matsumoto , Masasi Simonaru , Toru Sawaki , Katsushi Sasaki , Masahiro Murakami , Yoshiki Matsuoka
- 优先权: JP10-296633 19981019; JP10-308407 19981027; JP11-021693 19990129
- 主分类号: C08G6400
- IPC分类号: C08G6400
摘要:
An aromatic polycarbonate resin is produced under the conditions that the flow velocity of the reaction mixture in a pipe through which a molten reaction mixture passes is a specific value or over, the viscosity-average molecular weight of the reaction mixture is 1,000 or more, the sum of the average retention times of the reaction mixture is not longer than 3 hours, the wall temperature of the pipe through which a molten reaction mixture passes is set to be higher than the temperature of the reaction mixture in the pipe, the catalyst deactivation agent is added within 2 hours after the completion of the melt polycondensation reaction, the filtration is carried out by using a filter having a specific retained particle size under a specific pressure difference, specific treated amount of the aromatic polycarbonate resin per unit area of the filter and a ratio of W (flow quantity of filtered polymer)×1,000/A (maximum area of the polymer path in the filtration vessel) falling within a specific range, etc.