公开(公告)号：US5349043A

公开(公告)日：1994-09-20

申请号：US069598

申请日：1993-06-01

申请人： Shigeki Kuze ,  Ryozo Okumura ,  Noriyuki Kunishi

发明人： Shigeki Kuze ,  Ryozo Okumura ,  Noriyuki Kunishi

IPC分类号： C08G64/20 ,  C08G64/30 ,  C08G64/00

CPC分类号： C08G64/30

摘要： A polycarbonate having desirable color tone or transparency, as well as desirable heat resistance and water resistance, in which the amounts of residual metals in the polycarbonate are 10 ppm or less in total of Fe, Cr and Mo and 50 ppm or less in total of Ni and Cr. The polycarbonate is obtained by transesterification of (A) a dihydroxy compound and (B) a carbonic diester in a reactor made of a metallic material containing at least one metal selected from the group consisting of Fe, Cr, Mo, Ni and Cu, and controlling the water content in the reactor to 500 ppm or less.

摘要翻译： 具有所需色调或透明度的聚碳酸酯，以及所需的耐热性和耐水性，其中聚碳酸酯中的残留金属的总量为Fe，Cr和Mo的总和为10ppm以下，总共为50ppm以下 镍和铬。 聚碳酸酯通过（A）二羟基化合物和（B）碳酸二酯在由含有选自Fe，Cr，Mo，Ni和Cu中的至少一种金属的金属材料制成的反应器中进行酯交换获得，以及 将反应器中的水含量控制在500ppm以下。

公开(公告)号：US5314949A

公开(公告)日：1994-05-24

申请号：US28366

申请日：1993-03-09

申请人： Shiro Kozakura ,  Shigeki Kuze ,  Kenji Tanaka

发明人： Shiro Kozakura ,  Shigeki Kuze ,  Kenji Tanaka

IPC分类号： C08L67/02 ,  C08L69/00

CPC分类号： C08L67/02 ,  C08L69/00

摘要： A polycarbonate resin composition comprising 1 to 99% by weight of a branched polycarbonate having a branched nucleus structure derived from a branching agent represented by the general formula: ##STR1## wherein R is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and R.sup.1 to R.sup.6 are hydrogen atoms, alkyl groups having 1 to 5 carbon atoms or halogen atoms, respectively, and 99 to 1% by weight of a thermoplastic polyester resin. The polycarbonate resin composition is excellent in fluidability, solvent resistance and moldability.

摘要翻译： 一种聚碳酸酯树脂组合物，其包含1至99重量％的支链聚碳酸酯，所述支链聚碳酸酯具有衍生自由以下通式表示的支化剂的支化核结构：其中R是氢原子或具有1至 5个碳原子，R1〜R6分别为氢原子，碳原子数为1〜5的烷基或卤原子，99〜1重量％的热塑性聚酯树脂。 聚碳酸酯树脂组合物的流动性，耐溶剂性和成型性优异。