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. 04, 2020
Filed:
Jun. 23, 2016
Dow Global Technologies Llc, Midland, MI (US);
Otto J. Berbee, Terneuzen, NL;
Stefan Hinrichs, Terneuzen, NL;
Sean W. Ewart, Freeport, TX (US);
John O. Osby, Freeport, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A process to form an ethylene-based polymer comprises polymerizing a reaction mixture comprising ethylene, at least one symmetrical polyene and at least one chain transfer agent system comprising at least one chain transfer agent (CTA) in the presence of at least one free-radical initiator and in a reactor configuration comprising at least two reaction zones, reaction zone 1 and reaction zone i (i≥2), wherein reaction zone i is downstream from reaction zone 1. The ratio of 'the activity of the CTA system of the feed to the first reaction zone' to the 'activity of the CTA system of the cumulative feed to the reaction zone i,' (Z/Z), is less than or equal to (0.8−0.2*log(Cs)), wherein Cs is from 0.0001 to 10.