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18 条记录 (耗时 0.02 秒)

    On-line rheometer device
    3.
    发明授权
    On-line rheometer device 失效
    在线流变仪装置

    公开(公告)号：US5974866A

    公开(公告)日：1999-11-02

    申请号：US920944

    申请日：1997-08-29

    申请人： Mahari Tjahjadi ,  Joseph M. H. Janssen ,  George F. Fischer ,  Ye-Gang Lin ,  Safwat E. Tadros ,  Galina D. Georgieva

    发明人： Mahari Tjahjadi ,  Joseph M. H. Janssen ,  George F. Fischer ,  Ye-Gang Lin ,  Safwat E. Tadros ,  Galina D. Georgieva

    IPC分类号： G01D21/02 ,  B29C47/92 ,  G01N11/08 ,  G01N33/44 ,  G01N11/04 ,  A23G1/22

    CPC分类号： G01N11/08 ,  B29C47/0011 ,  B29C47/92 ,  B29C2947/92019 ,  B29C2947/92104 ,  B29C2947/9218 ,  B29C2947/9219 ,  B29C2947/922 ,  B29C2947/92209 ,  B29C2947/9238 ,  B29C2947/9239 ,  B29C2947/924 ,  B29C2947/92409 ,  B29C2947/92485 ,  B29C2947/92514 ,  B29C2947/926 ,  B29C2947/92695 ,  B29C2947/92704 ,  G01N33/442

    摘要： A system for providing process control information, such as viscosity, concerning a polymer melt comprises a means containing a polymer melt under pressure; means for diverting a stream of the polymer melt directly from said containing means to and through an orifice of predetermined geometrical shape wherein the flow of said diverted portion to and through said orifice is unobstructed and directly dependent on the pressure of said main polymer melt wherein the cross sectional area is sized to permit the flow of said diverted melt polymer therethrough absence additional independent means acting on said diverted melt polymer for increasing flow through said orifice; temperature sensing means for measuring the temperature of the diverted melt stream and producing a resultant temperature signal; pressure sensing means for measuring the pressure of the diverted melt stream and producing a resultant pressure signal, said pressure signal being directly dependent on the pressure of polymer in said main polymer melt and the predetermined size of said orifice; means weighing at least a portion of said diverted melt stream discharged through said orifice, said weighing means including weight sensing means for measuring the weight of diverted melt stream and producing a resultant weight signal; and computer means responsive to the temperature, pressure and weight signals for determining process characteristics of the main polymer melt.

    摘要翻译： 用于提供关于聚合物熔体的过程控制信息（例如粘度）的系统包括在压力下含有聚合物熔体的装置; 用于将聚合物熔体流直接从所述容纳装置转移到预定几何形状的孔口并通过预定几何形状的孔口的装置，其中所述转向部分流过所述孔口的流动是不受阻碍的，并且直接取决于所述主要聚合物熔体的压力，其中 横截面面积的大小适于允许所述转向熔融聚合物流过，而不存在作用在所述转向熔融聚合物上的附加独立装置以增加通过所述孔口的流动; 温度检测装置，用于测量转向的熔体流的温度并产生合成的温度信号; 用于测量转向熔体流的压力并产生合成压力信号的压力感测装置，所述压力信号直接取决于所述主要聚合物熔体中聚合物的压力和所述孔口的预定尺寸; 指重量通过所述孔排出的所述转向熔融物流的至少一部分，所述称重装置包括重量检测装置，用于测量转向熔体流的重量并产生所得重量信号; 以及响应温度，压力和重量信号的计算机装置，用于确定主聚合物熔体的工艺特性。

    Method for making fire-retarded polycarbonate and related compositions
    8.
    发明授权
    Method for making fire-retarded polycarbonate and related compositions 有权
    制造阻燃聚碳酸酯及相关组合物的方法

    公开(公告)号：US06790899B2

    公开(公告)日：2004-09-14

    申请号：US10065545

    申请日：2002-10-29

    申请人： Rajendra K. Singh ,  Ye-Gang Lin

    发明人： Rajendra K. Singh ,  Ye-Gang Lin

    IPC分类号： C08F216

    CPC分类号： C08K5/0066 ,  C08K5/42 ,  C08L69/00

    摘要： A combination of a potassium salt of a perfluoroalkane sulfonate and a sodium salt of toluene sulfonic acid, preferably in the presence of an antidrip agent to provide high melt strength, act synergistically to provide flame-retarded polycarbonate compositions at low levels. Thus, a flame-retarded polycarbonate resin can be made by adding to the polycarbonate resin an effective flame-retardant amount of a potassium salt of a perfluoroalkane sulfonate and a sodium salt of toluene sulfonic acid. The two salts may be formulated in advance into an additive composition.

    摘要翻译： 全氟烷基磺酸钾盐与甲苯磺酸钠盐的组合优选在抗滴定剂存在下提供高熔体强度，协同作用以提供低水平的阻燃聚碳酸酯组合物。 因此，可以通过向聚碳酸酯树脂中加入有效阻燃量的全氟烷基磺酸钾盐和甲苯磺酸钠盐来制造阻燃聚碳酸酯树脂。 这两种盐可预先配制成添加剂组合物。

    In-line rheometer device and method
    9.
    发明授权
    In-line rheometer device and method 有权
    在线流变仪装置及方法

    公开(公告)号：US06691558B1

    公开(公告)日：2004-02-17

    申请号：US10208294

    申请日：2002-07-31

    申请人： Ye-Gang Lin ,  Vikram Gopal ,  Ronald Dale Craddock ,  Michael Shoen Davis

    发明人： Ye-Gang Lin ,  Vikram Gopal ,  Ronald Dale Craddock ,  Michael Shoen Davis

    IPC分类号： G01N1100

    CPC分类号： B29C47/92 ,  B29C47/0009 ,  B29C2947/92019 ,  B29C2947/92104 ,  B29C2947/922 ,  B29C2947/92209 ,  B29C2947/92295 ,  B29C2947/92371 ,  B29C2947/92409 ,  B29C2947/926 ,  B29C2947/92695 ,  B29C2947/92704 ,  B29C2947/9279 ,  B29C2947/9298 ,  G01N11/08 ,  G01N33/442 ,  G01N2011/002

    摘要： A system and method for measuring viscosity, melt flow index (MFI), and melt volume rate (MVR) of a polymer melt in real-time during an extrusion process to provide quick and accurate feedback for process control. The system includes a polymer processing rate sensor (36), a polymer melt temperature sensor (30), an extruder pressure sensor (32), and a die head temperature sensor (34) for taking in-line measurements during the extrusion process. The in-line measurements are made on the main process stream of the polymer melt, with the determination of viscosity, MFI, and MVR based on these measured values and those obtained during a calibration run with polymers having known properties. The invention can be used in any polymer compounding and extrusion process utilizing die opening with any constant geometry for monitoring quality and providing feedback for process control.

    摘要翻译： 一种在挤出过程中实时测量聚合物熔体的粘度，熔体流动指数（MFI）和熔体体积速率（MVR）的系统和方法，为过程控制提供快速准确的反馈。 该系统包括聚合物处理速率传感器（36），聚合物熔体温度传感器（30），挤出机压力传感器（32）和用于在挤出过程中进行在线测量的模头温度传感器（34）。 在聚合物熔体的主工艺流中进行在线测量，基于这些测量值和在具有已知性质的聚合物的校准过程中获得的粘度，MFI和MVR的测定。 本发明可用于利用具有任何恒定几何形状的模具开口的任何聚合物复合和挤出方法，用于监测质量并提供过程控制的反馈。