公开(公告)号：US06989423B2

公开(公告)日：2006-01-24

申请号：US10612747

申请日：2003-07-02

申请人： James E. Wagner ,  Jerry M. Johnson ,  Dale J. Joy ,  Wesley J. Robertson ,  Timothy J. Cowell

发明人： James E. Wagner ,  Jerry M. Johnson ,  Dale J. Joy ,  Wesley J. Robertson ,  Timothy J. Cowell

IPC分类号： C08F8/00

CPC分类号： C08F8/06 ,  Y10S525/938 ,  C08F8/00 ,  C08F8/50 ,  C08F110/02

摘要： Processes are disclosed for oxygen-tailoring polyethylene resin. Polyethylene resin is conveyed through a feed zone, a melt-mixing zone and a melt zone. The resin is contacted with oxygen in an amount of at least 40 parts by weight O2 per million parts by weight resin, and contacted with primary antioxidant downstream of the point or points of oxygen contact. The oxygen-treated resin can be used to make polyethylene film having improved gauge uniformity.

摘要翻译： 公开了氧气聚乙烯树脂的方法。 聚乙烯树脂通过进料区，熔融混合区和熔融区输送。 树脂与氧相接触，其量为每百万重量份树脂至少40重量份O 2 2，并与氧接触点或点接触的主要抗氧化剂接触。 经氧化处理的树脂可用于制备具有改进的规格均匀性的聚乙烯薄膜。

公开(公告)号：US06924351B2

公开(公告)日：2005-08-02

申请号：US10458827

申请日：2003-06-11

申请人： Tomasz J. Gralinski ,  Thomas R. Rios ,  Carl Dean Heard ,  W. Bing Kao ,  Joanne K. Pabst ,  Wesley J. Robertson ,  Joel E. Schmieg

发明人： Tomasz J. Gralinski ,  Thomas R. Rios ,  Carl Dean Heard ,  W. Bing Kao ,  Joanne K. Pabst ,  Wesley J. Robertson ,  Joel E. Schmieg

IPC分类号： B29C47/38 ,  B29C47/40 ,  B29C47/76 ,  C08J5/18

CPC分类号： B29C47/762 ,  B29C47/0011 ,  B29C47/0021 ,  B29C47/0026 ,  B29C47/0054 ,  B29C47/0069 ,  B29C47/38 ,  B29C47/40 ,  B29C47/404 ,  B29C2791/001 ,  B29C2795/007 ,  B29K2023/06 ,  B29K2023/0616 ,  B29K2023/0625 ,  B29K2023/0633 ,  B29K2023/065 ,  B29K2105/256

摘要： Process for pelletizing polyethylene resin are disclosed, the processes providing pelletized resin having reduced occurrence of defects such as black specks. Polyethylene resin is conveyed in a downstream direction through a mixer having a feed zone, a melt-mixing zone downstream of the feed zone, and a melt-conveying zone downstream of the melt-mixing zone; contacted with nitrogen gas in the melt-conveying zone; and conveyed through a mixer discharge to form pellets. Also disclosed are processes of forming films from such resins, the films having reduced occurrence of gels, and articles such as blow molded or injection molded articles.

摘要翻译： 公开了用于造粒聚乙烯树脂的方法，提供造粒树脂的方法减少了诸如黑色斑点的缺陷的发生。 聚乙烯树脂在下游方向通过具有进料区，进料区下游的熔融混合区和熔融混合区下游的熔体输送区的混合器输送; 在熔体输送区与氮气接触; 并通过混合器排出物输送以形成颗粒。 还公开了从这种树脂形成膜的方法，该膜具有减少的凝胶发生，以及诸如吹塑或注塑制品的制品。