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. 06, 2013
Filed:
Jul. 20, 2010
Daniel J. Arriola, Midland, MI (US);
Thomas P. Clark, Midland, MI (US);
Kevin A. Frazier, Midland, MI (US);
Sara B. Klamo, Houston, TX (US);
Francis J. Timmers, Midland, MI (US);
Daniel J. Arriola, Midland, MI (US);
Thomas P. Clark, Midland, MI (US);
Kevin A. Frazier, Midland, MI (US);
Sara B. Klamo, Houston, TX (US);
Francis J. Timmers, Midland, MI (US);
Dow Global Technologies, LLC, Midland, MI (US);
Abstract
This disclosure relates to olefin polymerization catalysts and compositions, their manufacture, and the production of polyolefins using specific catalyst compositions, including the use of chain shuttling agents in the olefin polymerization process. Specifically, this disclosure provides for dual headed and multi-headed chain shuttling agents (CSAs or MSAs) and for their use in preparing blocky copolymers. By controlling the ratio of dual-headed and multi-headed CSA sites to mono-headed CSA sites, a blocky copolymer can be provided having properties such as a narrow molecular weight distribution and/or improved melt properties.