Process for producing polycarbonate
    1.
    发明授权
    Process for producing polycarbonate 失效
    生产聚碳酸酯的方法

    公开(公告)号:US5610262A

    公开(公告)日:1997-03-11

    申请号:US418510

    申请日:1995-04-07

    IPC分类号: C08G64/30 C08G63/78

    CPC分类号: C08G64/30 C08G64/307

    摘要: In a process for producing a polycarbonate by subjecting a dihydroxy compound and a diester of carbonic acid to melt polycondensation through transesterification, after a polycarbonate prepolymer is prepared in the first-stage reaction, polycondensation is conducted as the second-stage reaction in a residence time in the range of from 15 to less than 60 min or through the use of at least one paddle-type self-cleaning twin-screw extruderThis process enables a colorless, transparent polycarbonate having a high molecular weight to be produced at a high efficiency on an industrial scale.

    摘要翻译: 在通过使二羟基化合物和碳酸二酯通过酯交换进行熔融缩聚来制造聚碳酸酯的方法中,在第一阶段反应中制备聚碳酸酯预聚物之后,在停留时间作为第二阶段反应进行缩聚 在15至小于60分钟的范围内,或通过使用至少一个桨式自清洁双螺杆挤出机。该方法使得能够以高效率生产具有高分子量的无色透明聚碳酸酯 工业规模。

    Two-step process for the preparation of a (co)polycarbonate by
transesterification
    2.
    发明授权
    Two-step process for the preparation of a (co)polycarbonate by transesterification 失效
    通过酯交换制备(共)聚碳酸酯的两步法

    公开(公告)号:US5498688A

    公开(公告)日:1996-03-12

    申请号:US377847

    申请日:1995-01-25

    摘要: A process for the preparation of a (co)polycarbonate having an excellent hue, heat resistance, residence to hydrolysis and impact resistance by transesterification with the use of an aparatuses of a low price. In the first step, a dihydroxy compound is reacted with a carbonic diester in a reactor having a surface area contacting the dihydroxy compound and the carbonic diester, a made of a material containing iron in an amount of 20% by weight or less, to give a prepolymer and, in the second step, melt-polycondensing the prepolymer in a reactor other than the reactor used in the first step.

    摘要翻译: 通过使用低价格的装置,制备具有优异色调,耐热性,耐水解和耐冲击性的(共)聚碳酸酯的方法。 在第一步中,使二羟基化合物与具有与二羟基化合物和碳酸二酯的表面积接触的反应器中的碳酸二酯反应,该反应器由含有20重量%以下的铁的材料制成,得到 预聚物,并且在第二步骤中,将预聚物在除第一步骤中使用的反应器之外的反应器中熔融缩聚。

    (Co) Polycarbonate and process for producing the same
    3.
    发明授权
    (Co) Polycarbonate and process for producing the same 失效
    (Co)聚碳酸酯及其制造方法

    公开(公告)号:US5466774A

    公开(公告)日:1995-11-14

    申请号:US188194

    申请日:1994-01-28

    摘要: A processes for producing a (co)polycarbonate having a low terminal hydroxyl group concentration and being excellent in heat resistance and hue, which comprises melt-polycondensing a dihydroxy compound with a carbonic diester in the presence of a catalyst for transesterification selected from the group consisting of a nitrogen-containing basic compound, an alkali metal borate and an alkaline earth metal borate and in the presence of a specific ester compound.

    摘要翻译: 一种制备具有低端羟基浓度并具有优异的耐热性和色调的(共)聚碳酸酯的方法,其包括在用于酯交换的催化剂的存在下,使二羟基化合物与碳酸二酯熔融缩聚,所述催化剂选自 的含氮碱性化合物,碱金属硼酸盐和碱土金属硼酸盐,并在特定的酯化合物存在下进行。

    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:US5434227A

    公开(公告)日:1995-07-18

    申请号:US851806

    申请日:1992-03-16

    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 (co)polycarbonate with transesterification
catalyst and compound
    6.
    发明授权
    Process for producing (co)polycarbonate with transesterification catalyst and compound 失效
    用酯交换催化剂和化合物生产(共)聚碳酸酯的方法

    公开(公告)号:US5278279A

    公开(公告)日:1994-01-11

    申请号:US940310

    申请日:1992-08-31

    摘要: A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound. A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.

    摘要翻译: 通过使二羟基化合物与二羧酸的二酯和/或二碳酸的二酯反应,生成具有高分子量和(色),热稳定性和机械性能的(共)聚碳酸酯或(共)聚酯碳酸酯的方法 存在酯交换催化剂,其中至少部分反应过程在指定的有机磷化合物的存在下进行,或在指定的有机磷化合物和受阻酚化合物的存在下进行。 包含(共)聚碳酸酯和/或(共)聚酯碳酸酯和特定的有机磷化合物或特定有机磷化合物的(共)聚碳酸酯或(共)聚酯 - 碳酸酯组合物,其具有优异的色调,热稳定性和机械性能 磷化合物和受阻酚化合物。

    (Co)polycarbonate and process for producing the same
    7.
    发明授权
    (Co)polycarbonate and process for producing the same 失效
    (Co)聚碳酸酯及其制造方法

    公开(公告)号:US5663278A

    公开(公告)日:1997-09-02

    申请号:US456561

    申请日:1995-06-01

    摘要: A processes for producing a (co)polycarbonate having a low terminal hydroxyl group concentration and being excellent in heat resistance and hue, which comprises melt-polycondensing a dihydroxy compound with a carbonic diester in the presence of a catalyst for transesterification selected from the group consisting of a nitrogen-containing basic compound, an alkali metal borate and an alkaline earth metal borate and in the presence of a specific ester compound.

    摘要翻译: 一种制备具有低端羟基浓度并具有优异的耐热性和色调的(共)聚碳酸酯的方法,其包括在用于酯交换的催化剂的存在下,使二羟基化合物与碳酸二酯熔融缩聚,所述催化剂选自 的含氮碱性化合物,碱金属硼酸盐和碱土金属硼酸盐,并在特定的酯化合物存在下进行。

    Process for producing polycarbonate
    8.
    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

    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
    9.
    发明授权
    Process for producing polycarbonate 失效
    生产聚碳酸酯的方法

    公开(公告)号:US5432250A

    公开(公告)日:1995-07-11

    申请号:US978209

    申请日:1992-11-18

    IPC分类号: C08G64/30 C08G63/78

    CPC分类号: C08G64/30 C08G64/307

    摘要: In a process for producing a polycarbonate by subjecting a dihydroxy compound and a diester of carbonic acid to melt polycondensation through transesterification, after a polycarbonate prepolymer is prepared in the first-stage reaction, polycondensation is conducted as the second-stage reaction at a residence time in the range of from 15 to less than 60 min or through the use of at least one paddle-type self-cleaning twin-screw extruder.This process enables a colorless, transparent polycarbonate having a high molecular weight to be produced at a high efficiency on an industrial scale.

    摘要翻译: 在通过使二羟基化合物和碳酸二酯通过酯交换进行熔融缩聚来制造聚碳酸酯的方法中,在第一阶段反应中制备聚碳酸酯预聚物之后,在停留时间进行缩聚作为第二阶段反应 在15至小于60分钟的范围内,或通过使用至少一个桨式自清洁双螺杆挤出机。 该方法能够以高效率在工业规模上生产具有高分子量的无色透明聚碳酸酯。