公开(公告)号：US07378476B2

公开(公告)日：2008-05-27

申请号：US11147530

申请日：2005-06-08

申请人： Norman W. Carlson ,  Chi-Hung Lin ,  Jerome A. Streeky ,  Carl Towner ,  Barry F. Wood

发明人： Norman W. Carlson ,  Chi-Hung Lin ,  Jerome A. Streeky ,  Carl Towner ,  Barry F. Wood

IPC分类号： C08F4/28

CPC分类号： C08F10/00 ,  Y10S526/943 ,  C08F2/34 ,  C08F4/36 ,  C08F4/6094

摘要： An olefin polymerization process comprises gas-phase polymerization of at least one olefin monomer in a reactor using a Ziegler-Natta or metallocene catalyst system in the presence of at least one suitable radical-generating compound in an amount sufficient for polymer modification and subsequent stabilization of such compound and generated radicals before post-reactor heat processing.

摘要翻译： 烯烃聚合方法包括使用齐格勒 - 纳塔或茂金属催化剂体系的反应器中的至少一种烯烃单体的气相聚合，所述催化剂体系在至少一种足够用于聚合物改性的量的合适的自由基产生化合物存在下，随后稳定 这种化合物和在反应器后热处理产生的自由基。

公开(公告)号：US06350054B1

公开(公告)日：2002-02-26

申请号：US09206625

申请日：1998-12-07

申请人： James Hanawalt Lee ,  Chi-Hung Lin ,  Barry F. Wood

发明人： James Hanawalt Lee ,  Chi-Hung Lin ,  Barry F. Wood

IPC分类号： B01F704

CPC分类号： B01F7/04 ,  B01J8/10 ,  B01J19/18 ,  B01J2208/00362 ,  B01J2208/00539 ,  B01J2208/00548 ,  B01J2208/00867 ,  B01J2219/182

摘要： Improved apparatus for mechanically stirring a quench-cooled subfluidized particulate bed of polymerized monomer lowers lumping of polymer particles by using substantially contiguous paddle stations disposed along the drive shaft within the reactor in combination with a plurality of sub-stations in at least one paddle station class, each sub-station having a width along the shaft of no more than 50 percent of the total width of the paddle station, and sub-station paddles attached to the shaft at each sub-station so as to sweep through the particulate bed. In some embodiments, a first class of stations is, advantageously, disposed within the reactor along a portion of the drive shaft in repeating groups of at least two stations and a second class of stations with sub-stations is disposed within the reactor along another portion of the drive shaft, preferably in repeating groups of at least one more than the number of stations in the repeating group of the first class, to further reduce lumping of polymer particles.

摘要翻译： 用于机械搅拌聚合单体的淬火冷却亚流化颗粒床的改进的装置通过使用在反应器内沿着驱动轴设置的基本上连续的桨式站与多个分站在至少一个桨站级中组合来降低聚合物颗粒的集结 每个子站具有沿轴的宽度不超过桨站总宽度的50％，以及在每个子站附接到轴的子站桨，以便扫过颗粒床。 在一些实施例中，有利地，第一类站沿着驱动轴的一部分以至少两个站的重复组设置在反应器内，并且具有子站的第二类站具有沿另一部分设置在反应器内 的驱动轴，优选重复至少比第一类的重复组中的站数多一个的一组，以进一步减少聚合物颗粒的结块。