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:
Feb. 02, 2016
Filed:
Mar. 03, 2014
Exxonmobil Chemical Patents Inc., Baytown, TX (US);
John R. Hagadorn, Houston, TX (US);
Jian Yang, Houston, TX (US);
Patrick J. Palafox, Seabrook, TX (US);
ExxonMobil Chemical Patents Inc., Baytown, TX (US);
Abstract
A process of producing ethylene α-olefin copolymers, especially ethylene block copolymers, comprising contacting ethylene and a Cto Cα-olefin with a transition metal pyridyldiamide (MPN3) catalyst component and an activator, as well as from 10 equivalents to 1000 equivalents relative to the catalyst component of chain transfer agent; isolating an ethylene-α-olefin copolymer having a Tof less than 140° C., a MWD of less than 2.5, and a weight average molecular weight (Mw) within the range of from 5 kDa to 500 kDa. The chain transfer agent can be selected from Group 2, 12 or Group 13 alkyl or aryl compounds.