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    Process for the preparation of polycarbonate
    1.
    发明授权
    Process for the preparation of polycarbonate 失效
    制备聚碳酸酯的方法

    公开(公告)号：US5468836A

    公开(公告)日：1995-11-21

    申请号：US119065

    申请日：1993-09-13

    申请人： Yoshimichi Okano ,  Tatsuya Kanno ,  Tsutomu Yamato ,  Yasuhiro Oshino ,  Michiyo Tanigawa ,  Takaaki Kuwana ,  Yutaka Fukuda

    发明人： Yoshimichi Okano ,  Tatsuya Kanno ,  Tsutomu Yamato ,  Yasuhiro Oshino ,  Michiyo Tanigawa ,  Takaaki Kuwana ,  Yutaka Fukuda

    IPC分类号： C08G64/14 ,  C08G64/30 ,  C08G64/00

    CPC分类号： C08G64/14 ,  C08G64/30 ,  C08G64/307

    摘要： A polycarbonate which is not discolored and is substantially free from chlorine ions causative of discoloration, has a branching parameter G of 0.1 to 1.0 and, terminal hydroxyl groups of 20 mole % or below based on all the terminal groups of the polycarbonate, and/or, a chlorine ion concentration in the polycarbonate of 10 ppm or below, and/or, a total of an alkali metal ion concentration and an alkaline earth metal ion concentration in the polycarbonate of 1 ppm or below. A process for preparing the above polycarbonate by the melt transesterification process which comprises using a nitrogenous basic compound (a), and/or, a compound (b) containing an element selected from the group consisting of Groups IIb, IVb and Vb of the periodic table; or, a nitrogenous basic compound (a), and, a compound (c) containing an element selected from the group consisting of alkali metals and alkaline earth metals, as a transesterification catalyst.

    摘要翻译： PCT No.PCT / JP93 / 00104 Sec。 371日期1993年9月13日 102（e）1993年9月13日PCT 1993年1月28日PCT PCT。 公开号WO93 / 15129 日期为1993年8月5日。不变色并且基本上不含有由于变色引起的氯离子的聚碳酸酯，具有0.1至1.0的支化参数G和基于所有末端基团的20摩尔％或更低的末端羟基 的聚碳酸酯和/或聚碳酸酯中的氯离子浓度为10ppm以下，和/或聚碳酸酯中的碱金属离子浓度和碱土金属离子浓度的总和为1ppm以下。 一种通过熔融酯交换方法制备上述聚碳酸酯的方法，其包括使用含氮碱性化合物（a）和/或含有选自周期表中第IIb，IVb和Vb族的元素的化合物（b） 表; 或含氮碱性化合物（a）和含有选自碱金属和碱土金属的元素的化合物（c）作为酯交换催化剂。

    Process for producing polycarbonate
    2.
    发明授权
    Process for producing polycarbonate 失效
    生产聚碳酸酯的方法

    公开(公告)号：US5489665A

    公开(公告)日：1996-02-06

    申请号：US327329

    申请日：1994-10-21

    申请人： Tsutomu Yamato ,  Yasuhiro Oshino ,  Yutaka Fukuda ,  Tatsuya Kanno ,  Takaaki Kuwana ,  Yoshimichi Okano

    发明人： Tsutomu Yamato ,  Yasuhiro Oshino ,  Yutaka Fukuda ,  Tatsuya Kanno ,  Takaaki Kuwana ,  Yoshimichi Okano

    IPC分类号： C08G64/30 ,  C08G64/00

    CPC分类号： C08G64/307

    摘要： A polycarbonate is produced by transesterification from a dihydroxy compound such as 2,2-bis(4-hydroxyphenyl)propane and a diester of carbonic acid such as bisphenyl carbonate in the presence of a substance which contains iron in an amount of 50% by weight or less and contacts the reactants. Alternatively, a polycarbonate is produced by transesterification from a dihydroxy compound and a diester of carbonic acid in a reactor made of stainless steel and treated by electropolishing or acid pickling or buffed on a surface part thereof which contacts the reactants. As the transesterification catalyst, (a) a nitrogen-containing, electron-donating compound and (b) a nitrogen-containing, electron-donating compound and an alkali metal compound or an alkaline earth metal compound are preferably used.

    摘要翻译： 聚碳酸酯通过二羟基化合物如2,2-双（4-羟基苯基）丙烷和碳酸二酯如碳酸二苯酯的二酯化合物在含有50重量％的铁的物质的存在下进行酯交换 或更少并接触反应物。 或者，通过在由不锈钢制成的反应器中由二羟基化合物和碳酸二酯进行酯交换并通过电解抛光或酸洗或在其与反应物接触的表面部分上抛光来制备聚碳酸酯。 作为酯交换催化剂，优选使用（a）含氮供电子化合物和（b）含氮的给电子化合物和碱金属化合物或碱土金属化合物。

    Process for producing polycarbonate
    3.
    发明授权
    Process for producing polycarbonate 失效
    生产聚碳酸酯的方法

    公开(公告)号：US5434227A

    公开(公告)日：1995-07-18

    申请号：US851806

    申请日：1992-03-16

    申请人： Tsutomu Yamato ,  Yasuhiro Oshino ,  Yutaka Fukuda ,  Tatsuya Kanno ,  Takaaki Kuwana ,  Yoshimichi Okano

    发明人： Tsutomu Yamato ,  Yasuhiro Oshino ,  Yutaka Fukuda ,  Tatsuya Kanno ,  Takaaki Kuwana ,  Yoshimichi Okano

    IPC分类号： C08G64/30 ,  C08F2/00 ,  C08G64/00

    CPC分类号： C08G64/307

    摘要： A polycarbonate is produced by transesterification from a dihydroxy compound such as 2,2-bis(4-hydroxyphenyl)propane and a diester of carbonic acid such as bisphenyl carbonate in the presence of a substance containing iron in an amount of 50% by weight or less to contact the reactants. Also, a polycarbonate is produced by transesterification from a dihydroxy compound and a diester of carbonic acid in a reactor made of stainless steel and treated by electropolishing or acid pickling or buffed on a surface part thereof to contact the reactants. As the transesterification catalyst, (a) a nitrogen-containing, electron-donating compound and (b) a nitrogen-containing, electron-donating compound and an alkali metal compound or an alkaline earth metal compound are preferably used.

    摘要翻译： 聚碳酸酯通过二羟基化合物如2,2-双（4-羟基苯基）丙烷和碳酸二酯如碳酸二苯酯在含铁量为50重量％的物质存在下进行酯交换反应制备，或 少接触反应物。 另外，在由不锈钢制成的反应器中由二羟基化合物和碳酸二酯进行酯交换反应生成聚碳酸酯，并通过电解抛光或酸洗或在其表面部分进行抛光以与反应物接触。 作为酯交换催化剂，优选使用（a）含氮供电子化合物和（b）含氮的给电子化合物和碱金属化合物或碱土金属化合物。

    Process for producing polycarbonate
    4.
    发明授权
    Process for producing polycarbonate 失效
    生产聚碳酸酯的方法

    公开(公告)号：US5548041A

    公开(公告)日：1996-08-20

    申请号：US521071

    申请日：1995-08-29

    申请人： Tsutomu Yamato ,  Yasuhiro Oshino ,  Yutaka Fukuda ,  Tatsuya Kanno ,  Takaaki Kuwana ,  Yoshimichi Okano

    发明人： Tsutomu Yamato ,  Yasuhiro Oshino ,  Yutaka Fukuda ,  Tatsuya Kanno ,  Takaaki Kuwana ,  Yoshimichi Okano

    IPC分类号： C08G64/30 ,  C08F2/00

    CPC分类号： C08G64/307

    摘要： A polycarbonate is produced by transesterification from a dihydroxy compound such as 2,2-bis(4-hydroxyphenyl)propane and a diester of carbonic acid such as bisphenyl carbonate in a reactor made of stainless steel and treated by electropolishing or acid pickling or buffed on a surface part thereof which contacts the reactants. As the transesterification catalyst, (a) a nitrogen-containing, electron-donating compound and (b) a nitrogen-containing, electron-donating compound and an alkali metal compound or an alkaline earth metal compound are preferably used.

    摘要翻译： 聚碳酸酯通过在不锈钢制反应器中由二羟基化合物如2,2-双（4-羟基苯基）丙烷和碳酸二碳酸酯如碳酸二苯酯进行酯交换反应生产，并通过电解抛光或酸洗处理或抛光 其表面部分与反应物接触。 作为酯交换催化剂，优选使用（a）含氮供电子化合物和（b）含氮的给电子化合物和碱金属化合物或碱土金属化合物。

    (CO) polycarbonate composition and process for preparing the same
    5.
    发明授权
    (CO) polycarbonate composition and process for preparing the same 失效
    （CO）聚碳酸酯组合物及其制备方法

    公开(公告)号：US5475079A

    公开(公告)日：1995-12-12

    申请号：US228283

    申请日：1994-04-15

    申请人： Yoshimichi Okano ,  Michiyo Tanigawa ,  Yutaka Fukuda

    发明人： Yoshimichi Okano ,  Michiyo Tanigawa ,  Yutaka Fukuda

    IPC分类号： C08G64/14 ,  C08G64/30 ,  C08G64/00

    CPC分类号： C08G64/14 ,  C08G64/307

    摘要： A (co)polycarbonate composition mainly comprising a (co)polycarbonate having a limiting viscosity number [.eta.] of 0.2 to 1.0 dl/g and terminal hydroxyl groups in an amount of 20 mole % or below, based on all the terminal groups of the (co)polycarbonate, and is substantially free from any branched structure which might otherwise be formed by a side reaction. The (co)polycarbonate contains chlorine (causasive of discoloration) in an amount of 10 ppm or below and an alkali metal ion and/or an alkaline earth metal ion in an amount of 1 ppm or below. A process for preparing the above (co)polycarbonate composition by the melt transesterification process involves the reaction of a dihydroxy compound such as bisphenol A and a carbonic diester such as diphenyl carbonate with a nitrogen-containing basic compound (a), and/or, a compound (b) containing an element selected from the group consisting of elements belonging to Groups I, II, IV and V of the periodic table as a catalyst.

    摘要翻译： 主要包含特性粘度数η为0.2至1.0dl / g的（共）聚碳酸酯和基于所有末端基团的20mol％或更低的末端羟基的（共）聚碳酸酯组合物 （共）聚碳酸酯，并且基本上不含任何可能由副反应形成的支链结构。 （共）聚碳酸酯含有10ppm以下的氯（变色腐蚀）和1ppm以下的碱金属离子和/或碱土金属离子。 通过熔融酯交换法制备上述（共）聚碳酸酯组合物的方法涉及二羟基化合物如双酚A和碳酸二酯如碳酸二苯酯与含氮碱性化合物（a）的反应，和/或 含有选自元素周期表第I，II，IV和V族元素的元素作为催化剂的化合物（b）。