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:
Oct. 28, 2014
Filed:
Sep. 21, 2011
Otto J. Berbee, Hulst, NL;
Roger G. Gagnon, Clute, TX (US);
Mark Jasek, Clute, TX (US);
Laura Nunez, Lake Jackson, TX (US);
Bryan Gutermuth, Angleton, TX (US);
Otto J. Berbee, Hulst, NL;
Roger G. Gagnon, Clute, TX (US);
Mark Jasek, Clute, TX (US);
Laura Nunez, Lake Jackson, TX (US);
Bryan Gutermuth, Angleton, TX (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Ethylene-based interpolymers, e.g., ethylene-acrylic acid copolymers, are made by a process comprising the steps of: A. Injecting a first feed comprising a chain transfer agent system (CTA system) and ethylene into a first autoclave reactor zone to produce a first zone reaction product, the CTA system of the first reactor zone having a transfer activity Z1; and B. (1) Transferring at least part of the first zone reaction product to a second reactor zone selected from a second autoclave reactor zone or a tubular reactor zone, and (2) at least one of transferring or freshly injecting a feed comprising a CTA system into the second reactor zone to produce a second zone reaction product, the CTA system of the second reactor zone having a transfer activity of Z2; and with the proviso that the ratio of Z1:Z2 is greater than 1. The comonomer comprises at least one carboxylic acid group or an anhydride group.