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11. 发明授权

US06204352B1 Apparatus for manufacturing polycarbonate 有权
标题翻译：聚碳酸酯制造装置
公开(公告)号：US06204352B1
公开(公告)日：2001-03-20
申请号：US09461970
申请日：1999-12-15
申请人： Takato Kimura , Satoshi Omori , Ken Tamada , Akio Kanezawa
发明人： Takato Kimura , Satoshi Omori , Ken Tamada , Akio Kanezawa
IPC分类号： C08G6400
CPC分类号： C08G64/205
摘要： To provide a manufacturing apparatus with which it is possible to manufacture a polycarbonate that has superior residence stability such as its coloring stability and thermal stability during melt molding, and that has a low content of foreign matter. An apparatus for manufacturing a polycarbonate by the melt polycondensation of a bisphenol and a carbonic diester, wherein said apparatus for manufacturing a polycarbonate is characterized in that: (1) the equipment surfaces that come into contact with the molten raw materials and the reaction product thereof at 250° C. or lower are made of nickel; and (2) the equipment surfaces that come into contact with the molten raw materials and the reaction product thereof above 250° C. are made of stainless steel with a nickel content of 5 to 15% and a chromium content of 10 to 20%.
摘要翻译：提供一种可以制造具有优异的驻留稳定性的聚碳酸酯的制造装置，例如其在熔融成型期间的着色稳定性和热稳定性，并且具有低的异物含量。1.一种通过熔体制造聚碳酸酯的设备双酚和碳酸二酯的缩聚反应，其中所述聚碳酸酯制造装置的特征在于：（1）在250℃以下与熔融原料及其反应产物接触的设备表面的镍; 和（2）与熔融原料接触的设备表面及其反应产物高于250℃由镍含量为5〜15％，铬含量为10〜20％的不锈钢制成。

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