PRODUCTION OF A POLYCARBONATE WITH LIMITED METAL RESIDUALS
    2.
    发明申请
    PRODUCTION OF A POLYCARBONATE WITH LIMITED METAL RESIDUALS 有权
    生产具有有限金属残留物的聚碳酸酯

    公开(公告)号:US20140275466A1

    公开(公告)日:2014-09-18

    申请号:US14207806

    申请日:2014-03-13

    CPC classification number: C08G64/307 C07C69/96

    Abstract: A method for producing a polycarbonate comprising: reacting a diaryl carbonate with a dihydroxy compound to form a polycarbonate, wherein the polycarbonate comprises: less than or equal to 1000 ppb of molybdenum; less than or equal to 33 ppb of vanadium; less than or equal to 33 ppb of chromium; less than or equal to 375 ppb of niobium; less than or equal to 33 ppb of nickel; less than or equal to 10 ppb of zirconium; and less or equal to 10 ppb iron.

    Abstract translation: 一种制备聚碳酸酯的方法,包括:使碳酸二芳基酯与二羟基化合物反应以形成聚碳酸酯,其中所述聚碳酸酯包括:小于或等于1000ppb的钼; 小于或等于33 ppb的钒; 小于或等于33 ppb的铬; 小于或等于375ppb的铌; 小于或等于33 ppb的镍; 小于或等于10ppb的锆; 小于或等于10 ppb铁。

    Production of a polycarbonate with limited metal residuals
    3.
    发明授权
    Production of a polycarbonate with limited metal residuals 有权
    生产有限金属残留物的聚碳酸酯

    公开(公告)号:US08962788B2

    公开(公告)日:2015-02-24

    申请号:US14207806

    申请日:2014-03-13

    CPC classification number: C08G64/307 C07C69/96

    Abstract: A method for producing a polycarbonate comprising: reacting a diaryl carbonate with a dihydroxy compound to form a polycarbonate, wherein the polycarbonate comprises: less than or equal to 1000 ppb of molybdenum; less than or equal to 33 ppb of vanadium; less than or equal to 33 ppb of chromium; less than or equal to 375 ppb of niobium; less than or equal to 33 ppb of nickel; less than or equal to 10 ppb of zirconium; and less or equal to 10 ppb iron.

    Abstract translation: 一种制备聚碳酸酯的方法,包括:使碳酸二芳基酯与二羟基化合物反应以形成聚碳酸酯,其中所述聚碳酸酯包括:小于或等于1000ppb的钼; 小于或等于33 ppb的钒; 小于或等于33 ppb的铬; 小于或等于375ppb的铌; 小于或等于33ppb的镍; 小于或等于10ppb的锆; 小于或等于10 ppb铁。

    Continuous process for the production of melt polycarbonate
    4.
    发明授权
    Continuous process for the production of melt polycarbonate 有权
    生产熔融聚碳酸酯的连续工艺

    公开(公告)号:US08962787B2

    公开(公告)日:2015-02-24

    申请号:US13982537

    申请日:2012-12-17

    CPC classification number: C08G64/307

    Abstract: A method for producing polycarbonate by melt polymerization can comprise: (a) adding acetone, diaryl carbonate, and dihydroxy compound to the melt polymerization unit, wherein the acetone is added to the melt polymerization unit as a mixture with the diaryl carbonate and/or the dihydroxy compound; (b) adding a catalyst to the melt polymerization unit, optionally without separating out acetone prior to the addition of the catalyst; and (c) operating the melt polymerization unit under conditions so that the diaryl carbonate(s) and dihydroxy compound(s); dihydroxy compound reacts with the diaryl carbonate to produce polycarbonate with a desired specification, and a phenol by-product.

    Abstract translation: 通过熔融聚合制备聚碳酸酯的方法可以包括:(a)向熔融聚合单元中加入丙酮,碳酸二芳基酯和二羟基化合物,其中将丙酮作为与碳酸二芳酯和/或 二羟基化合物 (b)向熔融聚合单元中加入催化剂,任选地在加入催化剂之前不分离出丙酮; 和(c)在使得碳酸二芳基酯和二羟基化合物的条件下操作熔融聚合单元; 二羟基化合物与碳酸二芳酯反应以产生具有所需规格的聚碳酸酯和苯酚副产物。

    CONTINUOUS PROCESS FOR THE PRODUCTION OF MELT POLYCARBONATE
    5.
    发明申请
    CONTINUOUS PROCESS FOR THE PRODUCTION OF MELT POLYCARBONATE 有权
    用于生产熔融聚碳酸酯的连续工艺

    公开(公告)号:US20140206833A1

    公开(公告)日:2014-07-24

    申请号:US13982537

    申请日:2012-12-17

    CPC classification number: C08G64/307

    Abstract: A method for producing polycarbonate by melt polymerization can comprise: (a) adding acetone, diaryl carbonate, and dihydroxy compound to the melt polymerization unit, wherein the acetone is added to the melt polymerization unit as a mixture with the diaryl carbonate and/or the dihydroxy compound; (b) adding a catalyst to the melt polymerization unit, optionally without separating out acetone prior to the addition of the catalyst; and (c) operating the melt polymerization unit under conditions so that the diaryl carbonate(s) and dihydroxy compound(s); dihydroxy compound reacts with the diaryl carbonate to produce polycarbonate with a desired specification, and a phenol by-product.

    Abstract translation: 通过熔融聚合制备聚碳酸酯的方法可以包括:(a)向熔融聚合单元中加入丙酮,碳酸二芳基酯和二羟基化合物,其中将丙酮作为与碳酸二芳酯和/或 二羟基化合物 (b)向熔融聚合单元中加入催化剂,任选地在加入催化剂之前不分离出丙酮; 和(c)在使得碳酸二芳基酯和二羟基化合物的条件下操作熔融聚合单元; 二羟基化合物与碳酸二芳酯反应以产生具有所需规格的聚碳酸酯和苯酚副产物。

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