发明名称 Production method of aromatic polycarbonate
摘要 The object of the present invention is to provide a production method of a high molecular weight aromatic polycarbonate containing a reduced amount of a high melting point product, and having less thermal history received and excellent hue by a melt process. The present invention relates to a production method of an aromatic polycarbonate, characterized in that in producing an aromatic polycarbonate using an aromatic dihydroxy compound and a carbonic diester as raw materials and using plural reactors, a molten reactant temperature T1 (° C.) in at least one reactor A and a molten reactant temperature T2 (° C.) in a reactor B subsequent to the reactor A are satisfied with the relationship of T2<T1, and an evaporation surface area per unit treatment amount of a molten reactant in the reactor to which a molten reactant having a limiting viscosity of 0.1 dl/g or more is supplied is 1.0 m2·hr/m3 or more.
申请公布号 US7754845(B2) 申请公布日期 2010.07.13
申请号 US20070064343 申请日期 2007.05.22
申请人 MITSUBISHI CHEMICAL CORPORATION 发明人 HAMANO TOSHIYUKI;UCHIMURA RYUUJI;TAKAHASHI KAZUYUKI;MIYAMOTO MASAAKI
分类号 C08G64/00;C08G63/02 主分类号 C08G64/00
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