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68 条记录 (耗时 0.043 秒)

    Method for On-Line Determination of Degree or Onset of Resin Stickiness Using Acoustic Data
    21.
    发明申请
    Method for On-Line Determination of Degree or Onset of Resin Stickiness Using Acoustic Data 失效
    使用声学数据在线确定树脂粘性的程度或开始的方法

    公开(公告)号：US20100286346A1

    公开(公告)日：2010-11-11

    申请号：US12774084

    申请日：2010-05-05

    申请人： Michael E. Muhle ,  Richard B. Pannell ,  Eric J. Markel ,  Robert O. Hagerty

    发明人： Michael E. Muhle ,  Richard B. Pannell ,  Eric J. Markel ,  Robert O. Hagerty

    IPC分类号： C08F2/00

    CPC分类号： C08F10/02 ,  C08F210/16 ,  C08F2400/02 ,  C08F2/34 ,  C08F2/002 ,  C08F2/00 ,  C08F210/08 ,  C08F2500/12 ,  C08F2500/08

    摘要： Provided is a method for monitoring a polymerization reaction in a fluid bed reactor to determine in on-line fashion a current value, and preferably also a limiting value, of a stickiness control temperature, and optionally controlling the reaction in response thereto in an effort to prevent occurrence of a discontinuity event. The stickiness control temperature is a temperature indicative of a characteristic of melting behavior of polymer resin in the reactor, and may be indicative of occurrence of resin sheeting or another discontinuity event. Optionally, a predetermined relation between values of acoustic energy in the reactor and values of a stickiness control temperature is used to provide error checking for determination of the stickiness control temperature, or a current value of the stickiness control temperature is determined from acoustic data and a predetermined relation between values of an acoustic condition in the reactor and values of the stickiness control temperature.

    摘要翻译： 提供了一种用于监测流化床反应器中的聚合反应的方法，以在线方式确定粘性控制温度的当前值，优选地也是限制值，并且可选地控制响应于此的反应，以努力 防止发生不连续事件。 粘性控制温度是指示反应器中聚合物树脂的熔融特性的特性的温度，并且可以指示发生树脂片或另一不连续事件。 可选地，使用反应器中的声能值和粘性控制温度的值之间的预定关系来提供用于确定粘性控制温度的错误检查，或者根据声学数据确定粘性控制温度的当前值，并且 反应器中的声学条件的值和粘性控制温度的值之间的预定关系。

    Method for on-line monitoring and control of polymerization processes and reactors to prevent discontinuity events
    26.
    发明申请
    Method for on-line monitoring and control of polymerization processes and reactors to prevent discontinuity events 失效
    用于在线监测和控制聚合过程和反应器以防止不连续事件的方法

    公开(公告)号：US20080319583A1

    公开(公告)日：2008-12-25

    申请号：US12214469

    申请日：2008-06-19

    申请人： Robert O. Hagerty ,  Ian D. Burdett ,  Marc L. DeChellis ,  F. David Hussein ,  Eric J. Markel ,  Michael E. Muhle ,  Richard B. Pannell ,  Daniel P. Zilker

    发明人： Robert O. Hagerty ,  Ian D. Burdett ,  Marc L. DeChellis ,  F. David Hussein ,  Eric J. Markel ,  Michael E. Muhle ,  Richard B. Pannell ,  Daniel P. Zilker

    IPC分类号： G05B21/00

    CPC分类号： C08F10/00 ,  C08F2400/02 ,  C08F2/34 ,  C08F2/002 ,  C08F2/00

    摘要： Generally, a method of monitoring a polymerization reaction in a fluid bed reactor to generate, in on-line fashion, data indicative of the imminent occurrence of a discontinuity event (for example, sheeting) and optionally also control the reaction to prevent the occurrence of the discontinuity event is provided. Typical embodiments include the steps of generating in on-line fashion at least one of bed static data indicative of static charge in the fluidized bed and carryover static data indicative of carryover static; and generating at least one of temperature data (in on-line fashion using at least one monitored reaction parameter) indicative of a first temperature and acoustic emission data indicative of resin stickiness in the reactor, where the first temperature is indicative of at least one of degree of resin stickiness in the reactor and a characteristic of melting behavior of polymer resin in the reactor in the presence of at least one diluent.

    摘要翻译： 通常，监测流化床反应器中的聚合反应的方法，以在线方式产生指示即将发生的不连续事件（例如，片材）的数据，并且还可任选地控制反应以防止发生 提供不连续事件。 典型的实施方案包括以在线方式产生指示流化床中的静电荷的床静态数据中的至少一种并携带指示携带静电的静态数据的步骤; 并且产生指示在反应器中指示树脂粘性的第一温度和声发射数据的温度数据（以在线方式使用至少一个监测的反应参数）中的至少一个，其中第一温度表示以下中的至少一个： 在至少一种稀释剂存在下，反应器中的树脂粘性程度和聚合物树脂在反应器中的熔融行为的特征。

    Catalyst composition for polymerizing alpha-olefins
    30.
    再颁专利
    Catalyst composition for polymerizing alpha-olefins 失效
    用于聚合α-烯烃的催化剂组合物

    公开(公告)号：USRE33683E

    公开(公告)日：1991-09-03

    申请号：US357249

    申请日：1989-05-26

    申请人： Louanne M. Allen ,  Robert O. Hagerty ,  Richard O. Mohring

    发明人： Louanne M. Allen ,  Robert O. Hagerty ,  Richard O. Mohring

    IPC分类号： C08F210/02

    CPC分类号： C08F210/02

    摘要： A catalyst composition for polymerizing alpha-olefins is prepared by reacting a transition metal compound, e.g., titanium, with trimethylaluminum catalyst activator. In a preferred embodiment, the catalyst is supported on a porous refractory support and is prepared by additionally reacting a magnesium compound or an organomagnesium composition with the support.Also disclosed is a process for polymerizing alpha-olefins in the presence of the catalyst of the invention. The polymer products have higher bulk density and produce films of greater strength than polymers prepared with similar catalysts utilizing different alkyl-aluminum activators, e.g., triethylaluminum and triisobutylaluminum.