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:
Jun. 05, 2007
Filed:
Apr. 19, 2004
Sehyun Kim, Murrysville, PA (US);
Andrew L. Schnitgen, Cranberry Township, PA (US);
Ruben A. Migone, Pittsburgh, PA (US);
Jeffrey S. Salek, Oakdale, PA (US);
Sehyun Kim, Murrysville, PA (US);
Andrew L. Schnitgen, Cranberry Township, PA (US);
Ruben A. Migone, Pittsburgh, PA (US);
Jeffrey S. Salek, Oakdale, PA (US);
Sunoco, Inc. ( R&M), Philadelphia, PA (US);
Abstract
A thermoplastic polyolefin having a melt flow rate of 20 dg/min or higher at 230° C. is produced in reactor without visbreaking. By controlling ratio of the weight average molecular weight of the xylene soluble fraction to the weight average molecular weight of the xylene insoluble fraction, a high melt flow thermoplastic polyolefin can be produced having a good balance of impact and stiffness, tensile elongation at break and gloss properties. Optionally, the ratio of the melt flow rate of the homopolymer phase to the melt flow rate of the total thermoplastic polyolefin can also be controlled. By compounding thermoplastic polyolefins according to the current invention with one or more modifiers, additional compositions can be produced having improved resistance to solvents.