The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 2005
Filed:
Jun. 11, 2003
Tomasz J. Gralinski, Ashwood, AU;
Thomas R. Rios, Highlands, TX (US);
Carl Dean Heard, Houston, TX (US);
W. Bing Kao, Houston, TX (US);
Joanne K. Pabst, Crosby, TX (US);
Wesley J. Robertson, Humble, TX (US);
Joel E. Schmieg, Humble, TX (US);
Tomasz J. Gralinski, Ashwood, AU;
Thomas R. Rios, Highlands, TX (US);
Carl Dean Heard, Houston, TX (US);
W. Bing Kao, Houston, TX (US);
Joanne K. Pabst, Crosby, TX (US);
Wesley J. Robertson, Humble, TX (US);
Joel E. Schmieg, Humble, TX (US);
ExxonMobil Chemical Patents Inc., Houston, TX (US);
Abstract
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.