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. 11, 2019
Filed:
Dec. 17, 2014
Dow Global Technologies Llc, Midland, MI (US);
Teresa P. Karjala, Lake Jackson, TX (US);
Sean W. Ewart, Pearland, TX (US);
Mehmet Demirors, Pearland, TX (US);
Michael W. Tilston, Missouri City, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
The invention provides a process to prepare a second propylene-based polymer from a first propylene-based polymer, each propylene-based polymer having a melt flow rate (MFR; 2.16 kg/230° C.) with the MFR of the second propylene-based polymer greater than the MFR of the first propylene-based polymer, the process comprising the step of contacting under visbreaking conditions the first propylene-based polymer with at least one carbon-carbon (C—C) free-radical initiator of Structure (I): (Structure (I)) wherein R, R, R, R, Rand Rare each, independently, a hydrocarbyl group or a substituted hydrocarbyl group, and wherein, optionally, two or more R groups (R, R, R, R, Rand R) form a ring structure.