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:
May. 15, 2007
Filed:
Mar. 25, 2005
Applicants:
Rubén A. Migone, Pittsburgh, PA (US);
Sehyun Kim, Murrysville, PA (US);
Inventors:
Rubén A. Migone, Pittsburgh, PA (US);
Sehyun Kim, Murrysville, PA (US);
Assignee:
Sunoco, Inc. (R&M), Philadelphia, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F 110/06 (2006.01); C08F 4/62 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing propylene homopolymers comprises producing a homopolymer in a reactor train having a first stage and a second stage, wherein the first stage is normally used for homopolymer production and the second stage is normally used only in the production of copolymer blends, and is left idle during homopolymer production. According to the invention, during the production of propylene homopolymer, the polymerization is carried out sequentially in both the first stage and second stage reactors.