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:
Dec. 16, 2008
Filed:
May. 30, 2007
Applicants:
Craig Meverden, Wexford, PA (US);
Andrew Schnitgen, Mars, PA (US);
Sehyun Kim, Murrysville, PA (US);
Inventors:
Craig Meverden, Wexford, PA (US);
Andrew Schnitgen, Mars, PA (US);
Sehyun Kim, Murrysville, PA (US);
Assignee:
Sunoco, Inc. (R&M), Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 110/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
High melt flow rate high crystallinity polypropylene homopolymer are produced in a bulk polymerization process using a Ziegler-Natta catalyst containing a combination of two internal electron donors and selected external donors. The high melt flow rate, high crystallinity polypropylene homopolymers produced according to the current invention display improved flexural modulus and tensile yield stress when nucleated.